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3 tim 2685
4 tim 2786 @ARTICLE{Torre2003,
5     author = {J. G. {de la Torre} and H. E. Sanchez and A. Ortega and J. G. Hernandez
6     and M. X. Fernandes and F. G. Diaz and M. C. L. Martinez},
7     title = {Calculation of the solution properties of flexible macromolecules:
8     methods and applications},
9     journal = {European Biophysics Journal with Biophysics Letters},
10     year = {2003},
11     volume = {32},
12     pages = {477-486},
13     number = {5},
14     month = {Aug},
15     abstract = {While the prediction of hydrodynamic properties of rigid particles
16     is nowadays feasible using simple and efficient computer programs,
17     the calculation of such properties and, in general, the dynamic
18     behavior of flexible macromolecules has not reached a similar situation.
19     Although the theories are available, usually the computational work
20     is done using solutions specific for each problem. We intend to
21     develop computer programs that would greatly facilitate the task
22     of predicting solution behavior of flexible macromolecules. In this
23     paper, we first present an overview of the two approaches that are
24     most practical: the Monte Carlo rigid-body treatment, and the Brownian
25     dynamics simulation technique. The Monte Carlo procedure is based
26     on the calculation of properties for instantaneous conformations
27     of the macromolecule that are regarded as if they were instantaneously
28     rigid. We describe how a Monte Carlo program can be interfaced to
29     the programs in the HYDRO suite for rigid particles, and provide
30     an example of such calculation, for a hypothetical particle: a protein
31     with two domains connected by a flexible linker. We also describe
32     briefly the essentials of Brownian dynamics, and propose a general
33     mechanical model that includes several kinds of intramolecular interactions,
34     such as bending, internal rotation, excluded volume effects, etc.
35     We provide an example of the application of this methodology to
36     the dynamics of a semiflexible, wormlike DNA.},
37     annote = {724XK Times Cited:6 Cited References Count:64},
38     issn = {0175-7571},
39     uri = {<Go to ISI>://000185513400011},
40 tim 2685 }
41    
42 tim 2786 @ARTICLE{Alakent2005,
43     author = {B. Alakent and M. C. Camurdan and P. Doruker},
44     title = {Hierarchical structure of the energy landscape of proteins revisited
45     by time series analysis. II. Investigation of explicit solvent effects},
46     journal = {Journal of Chemical Physics},
47     year = {2005},
48     volume = {123},
49     pages = {-},
50     number = {14},
51     month = {Oct 8},
52     abstract = {Time series analysis tools are employed on the principal modes obtained
53     from the C-alpha trajectories from two independent molecular-dynamics
54     simulations of alpha-amylase inhibitor (tendamistat). Fluctuations
55     inside an energy minimum (intraminimum motions), transitions between
56     minima (interminimum motions), and relaxations in different hierarchical
57     energy levels are investigated and compared with those encountered
58     in vacuum by using different sampling window sizes and intervals.
59     The low-frequency low-indexed mode relationship, established in
60     vacuum, is also encountered in water, which shows the reliability
61     of the important dynamics information offered by principal components
62     analysis in water. It has been shown that examining a short data
63     collection period (100 ps) may result in a high population of overdamped
64     modes, while some of the low-frequency oscillations (< 10 cm(-1))
65     can be captured in water by using a longer data collection period
66     (1200 ps). Simultaneous analysis of short and long sampling window
67     sizes gives the following picture of the effect of water on protein
68     dynamics. Water makes the protein lose its memory: future conformations
69     are less dependent on previous conformations due to the lowering
70     of energy barriers in hierarchical levels of the energy landscape.
71     In short-time dynamics (< 10 ps), damping factors extracted from
72     time series model parameters are lowered. For tendamistat, the friction
73     coefficient in the Langevin equation is found to be around 40-60
74     cm(-1) for the low-indexed modes, compatible with literature. The
75     fact that water has increased the friction and that on the other
76     hand has lubrication effect at first sight contradicts. However,
77     this comes about because water enhances the transitions between
78     minima and forces the protein to reduce its already inherent inability
79     to maintain oscillations observed in vacuum. Some of the frequencies
80     lower than 10 cm(-1) are found to be overdamped, while those higher
81     than 20 cm(-1) are slightly increased. As for the long-time dynamics
82     in water, it is found that random-walk motion is maintained for
83     approximately 200 ps (about five times of that in vacuum) in the
84     low-indexed modes, showing the lowering of energy barriers between
85     the higher-level minima.},
86     annote = {973OH Times Cited:1 Cited References Count:33},
87     issn = {0021-9606},
88     uri = {<Go to ISI>://000232532000064},
89 tim 2685 }
90    
91 tim 2786 @BOOK{Allen1987,
92     title = {Computer Simulations of Liquids},
93     publisher = {Oxford University Press},
94     year = {1987},
95     author = {M.~P. Allen and D.~J. Tildesley},
96     address = {New York},
97 tim 2685 }
98    
99 tim 2786 @ARTICLE{Allison1991,
100     author = {S. A. Allison},
101     title = {A Brownian Dynamics Algorithm for Arbitrary Rigid Bodies - Application
102     to Polarized Dynamic Light-Scattering},
103     journal = {Macromolecules},
104     year = {1991},
105     volume = {24},
106     pages = {530-536},
107     number = {2},
108     month = {Jan 21},
109     abstract = {A Brownian dynamics algorithm is developed to simulate dynamics experiments
110     of rigid macromolecules. It is applied to polarized dynamic light
111     scattering from rodlike sturctures and from a model of a DNA fragment
112     (762 base pairs). A number of rod cases are examined in which the
113     translational anisotropy is increased form zero to a large value.
114     Simulated first cumulants as well as amplitudes and lifetimes of
115     the dynamic form factor are compared with predictions of analytic
116     theories and found to be in very good agreement with them. For DNA
117     fragments 762 base pairs in length or longer, translational anisotropy
118     does not contribute significantly to dynamic light scattering. In
119     a comparison of rigid and flexible simulations on semistiff models
120     of this fragment, it is shown directly that flexing contributes
121     to the faster decay processes probed by light scattering and that
122     the flexible model studies are in good agreement with experiment.},
123     annote = {Eu814 Times Cited:8 Cited References Count:32},
124     issn = {0024-9297},
125     uri = {<Go to ISI>://A1991EU81400029},
126 tim 2685 }
127    
128 tim 2789 @ARTICLE{Andersen1983,
129     author = {H. C. Andersen},
130     title = {Rattle - a Velocity Version of the Shake Algorithm for Molecular-Dynamics
131     Calculations},
132     journal = {Journal of Computational Physics},
133     year = {1983},
134     volume = {52},
135     pages = {24-34},
136     number = {1},
137     annote = {Rq238 Times Cited:559 Cited References Count:14},
138     issn = {0021-9991},
139     uri = {<Go to ISI>://A1983RQ23800002},
140     }
141    
142 tim 2786 @ARTICLE{Auerbach2005,
143     author = {A. Auerbach},
144     title = {Gating of acetylcholine receptor channels: Brownian motion across
145     a broad transition state},
146     journal = {Proceedings of the National Academy of Sciences of the United States
147     of America},
148     year = {2005},
149     volume = {102},
150     pages = {1408-1412},
151     number = {5},
152     month = {Feb 1},
153     abstract = {Acetylcholine receptor channels (AChRs) are proteins that switch between
154     stable #closed# and #open# conformations. In patch clamp recordings,
155     diliganded AChR gating appears to be a simple, two-state reaction.
156     However, mutagenesis studies indicate that during gating dozens
157     of residues across the protein move asynchronously and are organized
158     into rigid body gating domains (#blocks#). Moreover, there is an
159     upper limit to the apparent channel opening rate constant. These
160     observations suggest that the gating reaction has a broad, corrugated
161     transition state region, with the maximum opening rate reflecting,
162     in part, the mean first-passage time across this ensemble. Simulations
163     reveal that a flat, isotropic energy profile for the transition
164     state can account for many of the essential features of AChR gating.
165     With this mechanism, concerted, local structural transitions that
166     occur on the broad transition state ensemble give rise to fractional
167     measures of reaction progress (Phi values) determined by rate-equilibrium
168     free energy relationship analysis. The results suggest that the
169     coarse-grained AChR gating conformational change propagates through
170     the protein with dynamics that are governed by the Brownian motion
171     of individual gating blocks.},
172     annote = {895QF Times Cited:9 Cited References Count:33},
173     issn = {0027-8424},
174     uri = {<Go to ISI>://000226877300030},
175 tim 2685 }
176    
177 tim 2786 @ARTICLE{Baber1995,
178     author = {J. Baber and J. F. Ellena and D. S. Cafiso},
179     title = {Distribution of General-Anesthetics in Phospholipid-Bilayers Determined
180     Using H-2 Nmr and H-1-H-1 Noe Spectroscopy},
181     journal = {Biochemistry},
182     year = {1995},
183     volume = {34},
184     pages = {6533-6539},
185     number = {19},
186     month = {May 16},
187     abstract = {The effect of the general anesthetics halothane, enflurane, and isoflurane
188     on hydrocarbon chain packing in palmitoyl(d(31))oleoylphosphatidylcholine
189     membranes in the liquid crystalline phase was investigated using
190     H-2 NMR. Upon the addition of the anesthetics, the first five methylene
191     units near the interface generally show a very small increase in
192     segmental order, while segments deeper within the bilayer show a
193     small decrease in segmental order. From the H-2 NMR results, the
194     chain length for the perdeuterated palmitoyl chain in the absence
195     of anesthetic was found to be 12.35 Angstrom. Upon the addition
196     of halothane enflurane, or isoflurane, the acyl chain undergoes
197     slight contractions of 0.11, 0.20, or 0.16 Angstrom, respectively,
198     at 50 mol % anesthetic. A simple model was used to estimate the
199     relative amounts of anesthetic located near the interface and deeper
200     in the bilayer hydrocarbon region, and only a slight preference
201     for an interfacial location was observed. Intermolecular H-1-H-1
202     nuclear Overhauser effects (NOEs) were measured between phospholipid
203     and halothane protons. These NOEs are consistent with the intramembrane
204     location of the anesthetics suggested by the H-2 NMR data. In addition,
205     the NOE data indicate that anesthetics prefer the interfacial and
206     hydrocarbon regions of the membrane and are not found in high concentrations
207     in the phospholipid headgroup.},
208     annote = {Qz716 Times Cited:38 Cited References Count:37},
209     issn = {0006-2960},
210     uri = {<Go to ISI>://A1995QZ71600035},
211 tim 2685 }
212    
213 tim 2786 @ARTICLE{Banerjee2004,
214     author = {D. Banerjee and B. C. Bag and S. K. Banik and D. S. Ray},
215     title = {Solution of quantum Langevin equation: Approximations, theoretical
216     and numerical aspects},
217     journal = {Journal of Chemical Physics},
218     year = {2004},
219     volume = {120},
220     pages = {8960-8972},
221     number = {19},
222     month = {May 15},
223     abstract = {Based on a coherent state representation of noise operator and an
224     ensemble averaging procedure using Wigner canonical thermal distribution
225     for harmonic oscillators, a generalized quantum Langevin equation
226     has been recently developed [Phys. Rev. E 65, 021109 (2002); 66,
227     051106 (2002)] to derive the equations of motion for probability
228     distribution functions in c-number phase-space. We extend the treatment
229     to explore several systematic approximation schemes for the solutions
230     of the Langevin equation for nonlinear potentials for a wide range
231     of noise correlation, strength and temperature down to the vacuum
232     limit. The method is exemplified by an analytic application to harmonic
233     oscillator for arbitrary memory kernel and with the help of a numerical
234     calculation of barrier crossing, in a cubic potential to demonstrate
235     the quantum Kramers' turnover and the quantum Arrhenius plot. (C)
236     2004 American Institute of Physics.},
237     annote = {816YY Times Cited:8 Cited References Count:35},
238     issn = {0021-9606},
239     uri = {<Go to ISI>://000221146400009},
240 tim 2685 }
241    
242 tim 2789 @ARTICLE{Barojas1973,
243     author = {J. Barojas and D. Levesque},
244     title = {Simulation of Diatomic Homonuclear Liquids},
245     journal = {Phys. Rev. A},
246     year = {1973},
247     volume = {7},
248     pages = {1092-1105},
249     }
250    
251 tim 2786 @ARTICLE{Barth1998,
252     author = {E. Barth and T. Schlick},
253     title = {Overcoming stability limitations in biomolecular dynamics. I. Combining
254     force splitting via extrapolation with Langevin dynamics in LN},
255     journal = {Journal of Chemical Physics},
256     year = {1998},
257     volume = {109},
258     pages = {1617-1632},
259     number = {5},
260     month = {Aug 1},
261     abstract = {We present an efficient new method termed LN for propagating biomolecular
262     dynamics according to the Langevin equation that arose fortuitously
263     upon analysis of the range of harmonic validity of our normal-mode
264     scheme LIN. LN combines force linearization with force splitting
265     techniques and disposes of LIN'S computationally intensive minimization
266     (anharmonic correction) component. Unlike the competitive multiple-timestepping
267     (MTS) schemes today-formulated to be symplectic and time-reversible-LN
268     merges the slow and fast forces via extrapolation rather than impulses;
269     the Langevin heat bath prevents systematic energy drifts. This combination
270     succeeds in achieving more significant speedups than these MTS methods
271     which are Limited by resonance artifacts to an outer timestep less
272     than some integer multiple of half the period of the fastest motion
273     (around 4-5 fs for biomolecules). We show that LN achieves very
274     good agreement with small-timestep solutions of the Langevin equation
275     in terms of thermodynamics (energy means and variances), geometry,
276     and dynamics (spectral densities) for two proteins in vacuum and
277     a large water system. Significantly, the frequency of updating the
278     slow forces extends to 48 fs or more, resulting in speedup factors
279     exceeding 10. The implementation of LN in any program that employs
280     force-splitting computations is straightforward, with only partial
281     second-derivative information required, as well as sparse Hessian/vector
282     multiplication routines. The linearization part of LN could even
283     be replaced by direct evaluation of the fast components. The application
284     of LN to biomolecular dynamics is well suited for configurational
285     sampling, thermodynamic, and structural questions. (C) 1998 American
286     Institute of Physics.},
287     annote = {105HH Times Cited:29 Cited References Count:49},
288     issn = {0021-9606},
289     uri = {<Go to ISI>://000075066300006},
290 tim 2685 }
291    
292 tim 2786 @ARTICLE{Batcho2001,
293     author = {P. F. Batcho and T. Schlick},
294     title = {Special stability advantages of position-Verlet over velocity-Verlet
295     in multiple-time step integration},
296     journal = {Journal of Chemical Physics},
297     year = {2001},
298     volume = {115},
299     pages = {4019-4029},
300     number = {9},
301     month = {Sep 1},
302     abstract = {We present an analysis for a simple two-component harmonic oscillator
303     that compares the use of position-Verlet to velocity-Verlet for
304     multiple-time step integration. The numerical stability analysis
305     based on the impulse-Verlet splitting shows that position-Verlet
306     has enhanced stability, in terms of the largest allowable time step,
307     for cases where an ample separation of time scales exists. Numerical
308     investigations confirm the advantages of the position-Verlet scheme
309     when used for the fastest time scales of the system. Applications
310     to a biomolecule. a solvated protein, for both Newtonian and Langevin
311     dynamics echo these trends over large outer time-step regimes. (C)
312     2001 American Institute of Physics.},
313     annote = {469KV Times Cited:6 Cited References Count:30},
314     issn = {0021-9606},
315     uri = {<Go to ISI>://000170813800005},
316 tim 2685 }
317    
318 tim 2786 @ARTICLE{Bates2005,
319     author = {M. A. Bates and G. R. Luckhurst},
320     title = {Biaxial nematic phases and V-shaped molecules: A Monte Carlo simulation
321     study},
322     journal = {Physical Review E},
323     year = {2005},
324     volume = {72},
325     pages = {-},
326     number = {5},
327     month = {Nov},
328     abstract = {Inspired by recent claims that compounds composed of V-shaped molecules
329     can exhibit the elusive biaxial nematic phase, we have developed
330     a generic simulation model for such systems. This contains the features
331     of the molecule that are essential to its liquid crystal behavior,
332     namely the anisotropies of the two arms and the angle between them.
333     The behavior of the model has been investigated using Monte Carlo
334     simulations for a wide range of these structural parameters. This
335     allows us to establish the relationship between the V-shaped molecule
336     and its ability to form a biaxial nematic phase. Of particular importance
337     are the criteria of geometry and the relative anisotropy necessary
338     for the system to exhibit a Landau point, at which the biaxial nematic
339     is formed directly from the isotropic phase. The simulations have
340     also been used to determine the orientational order parameters for
341     a selection of molecular axes. These are especially important because
342     they reveal the phase symmetry and are connected to the experimental
343     determination of this. The simulation results show that, whereas
344     some positions are extremely sensitive to the phase biaxiality,
345     others are totally blind to this.},
346     annote = {Part 1 988LQ Times Cited:0 Cited References Count:38},
347     issn = {1539-3755},
348     uri = {<Go to ISI>://000233603100030},
349 tim 2685 }
350    
351 tim 2786 @ARTICLE{Beard2003,
352     author = {D. A. Beard and T. Schlick},
353     title = {Unbiased rotational moves for rigid-body dynamics},
354     journal = {Biophysical Journal},
355     year = {2003},
356     volume = {85},
357     pages = {2973-2976},
358     number = {5},
359     month = {Nov 1},
360     abstract = {We introduce an unbiased protocol for performing rotational moves
361     in rigid-body dynamics simulations. This approach - based on the
362     analytic solution for the rotational equations of motion for an
363     orthogonal coordinate system at constant angular velocity - removes
364     deficiencies that have been largely ignored in Brownian dynamics
365     simulations, namely errors for finite rotations that result from
366     applying the noncommuting rotational matrices in an arbitrary order.
367     Our algorithm should thus replace standard approaches to rotate
368     local coordinate frames in Langevin and Brownian dynamics simulations.},
369     annote = {736UA Times Cited:0 Cited References Count:11},
370     issn = {0006-3495},
371     uri = {<Go to ISI>://000186190500018},
372 tim 2685 }
373    
374 tim 2786 @ARTICLE{Beloborodov1998,
375     author = {I. S. Beloborodov and V. Y. Orekhov and A. S. Arseniev},
376     title = {Effect of coupling between rotational and translational Brownian
377     motions on NMR spin relaxation: Consideration using green function
378     of rigid body diffusion},
379     journal = {Journal of Magnetic Resonance},
380     year = {1998},
381     volume = {132},
382     pages = {328-329},
383     number = {2},
384     month = {Jun},
385     abstract = {Using the Green function of arbitrary rigid Brownian diffusion (Goldstein,
386     Biopolymers 33, 409-436, 1993), it was analytically shown that coupling
387     between translation and rotation diffusion degrees of freedom does
388     not affect the correlation functions relevant to the NMR intramolecular
389     relaxation. It follows that spectral densities usually used for
390     the anisotropic rotation diffusion (Woessner, J. Chem. Phys. 37,
391     647-654, 1962) can be regarded as exact in respect to the rotation-translation
392     coupling for the spin system connected with a rigid body. (C) 1998
393     Academic Press.},
394     annote = {Zu605 Times Cited:2 Cited References Count:6},
395     issn = {1090-7807},
396     uri = {<Go to ISI>://000074214800017},
397 tim 2685 }
398    
399 tim 2786 @ARTICLE{Berardi1996,
400     author = {R. Berardi and S. Orlandi and C. Zannoni},
401     title = {Antiphase structures in polar smectic liquid crystals and their molecular
402     origin},
403     journal = {Chemical Physics Letters},
404     year = {1996},
405     volume = {261},
406     pages = {357-362},
407     number = {3},
408     month = {Oct 18},
409     abstract = {We demonstrate that the overall molecular dipole organization in a
410     smectic liquid crystal formed of polar molecules can be strongly
411     influenced by the position of the dipole in the molecule. We study
412     by large scale Monte Carlo simulations systems of attractive-repulsive
413     ''Gay-Berne'' elongated ellipsoids with an axial dipole at the center
414     or near the end of the molecule and we show that monolayer smectic
415     liquid crystals and modulated antiferroelectric bilayer stripe domains
416     similar to the experimentally observed ''antiphase'' structures
417     are obtained in the two cases.},
418     annote = {Vn637 Times Cited:49 Cited References Count:26},
419     issn = {0009-2614},
420     uri = {<Go to ISI>://A1996VN63700023},
421 tim 2685 }
422    
423 tim 2786 @ARTICLE{Berkov2005,
424     author = {D. V. Berkov and N. L. Gorn},
425     title = {Magnetization precession due to a spin-polarized current in a thin
426     nanoelement: Numerical simulation study},
427     journal = {Physical Review B},
428     year = {2005},
429     volume = {72},
430     pages = {-},
431     number = {9},
432     month = {Sep},
433     abstract = {In this paper a detailed numerical study (in frames of the Slonczewski
434     formalism) of magnetization oscillations driven by a spin-polarized
435     current through a thin elliptical nanoelement is presented. We show
436     that a sophisticated micromagnetic model, where a polycrystalline
437     structure of a nanoelement is taken into account, can explain qualitatively
438     all most important features of the magnetization oscillation spectra
439     recently observed experimentally [S. I. Kiselev , Nature 425, 380
440     (2003)], namely, existence of several equidistant spectral bands,
441     sharp onset and abrupt disappearance of magnetization oscillations
442     with increasing current, absence of the out-of-plane regime predicted
443     by a macrospin model, and the relation between frequencies of so-called
444     small-angle and quasichaotic oscillations. However, a quantitative
445     agreement with experimental results (especially concerning the frequency
446     of quasichaotic oscillations) could not be achieved in the region
447     of reasonable parameter values, indicating that further model refinement
448     is necessary for a complete understanding of the spin-driven magnetization
449     precession even in this relatively simple experimental situation.},
450     annote = {969IT Times Cited:2 Cited References Count:55},
451     issn = {1098-0121},
452     uri = {<Go to ISI>://000232228500058},
453 tim 2685 }
454    
455 tim 2789 @ARTICLE{Berkov2005a,
456     author = {D. V. Berkov and N. L. Gorn},
457     title = {Stochastic dynamic simulations of fast remagnetization processes:
458     recent advances and applications},
459     journal = {Journal of Magnetism and Magnetic Materials},
460     year = {2005},
461     volume = {290},
462     pages = {442-448},
463     month = {Apr},
464     abstract = {Numerical simulations of fast remagnetization processes using stochastic
465     dynamics are widely used to study various magnetic systems. In this
466     paper, we first address several crucial methodological problems
467     of such simulations: (i) the influence of finite-element discretization
468     on simulated dynamics, (ii) choice between Ito and Stratonovich
469     stochastic calculi by the solution of micromagnetic stochastic equations
470     of motion and (iii) non-trivial correlation properties of the random
471     (thermal) field. Next, we discuss several examples to demonstrate
472     the great potential of the Langevin dynamics for studying fast remagnetization
473     processes in technically relevant applications: we present numerical
474     analysis of equilibrium magnon spectra in patterned structures,
475     study thermal noise effects on the magnetization dynamics of nanoelements
476     in pulsed fields and show some results for a remagnetization dynamics
477     induced by a spin-polarized current. (c) 2004 Elsevier B.V. All
478     rights reserved.},
479     annote = {Part 1 Sp. Iss. SI 922KU Times Cited:2 Cited References Count:25},
480     issn = {0304-8853},
481     uri = {<Go to ISI>://000228837600109},
482     }
483    
484 tim 2786 @ARTICLE{Berkov2002,
485     author = {D. V. Berkov and N. L. Gorn and P. Gornert},
486     title = {Magnetization dynamics in nanoparticle systems: Numerical simulation
487     using Langevin dynamics},
488     journal = {Physica Status Solidi a-Applied Research},
489     year = {2002},
490     volume = {189},
491     pages = {409-421},
492     number = {2},
493     month = {Feb 16},
494     abstract = {We report on recent progress achieved by the development of numerical
495     methods based on the stochastic (Langevin) dynamics applied to systems
496     of interacting magnetic nanoparticles. The method enables direct
497     simulations of the trajectories of magnetic moments taking into
498     account (i) all relevant interactions, (ii) precession dynamics,
499     and (iii) temperature fluctuations included via the random (thermal)
500     field. We present several novel results obtained using new methods
501     developed for the solution of the Langevin equations. In particular,
502     we have investigated magnetic nanodots and disordered granular systems
503     of single-domain magnetic particles. For the first case we have
504     calculated the spectrum and the spatial distribution of spin excitations.
505     For the second system the complex ac susceptibility chi(omega, T)
506     for various particle concentrations and particle anisotropies were
507     computed and compared with numerous experimental results.},
508     annote = {526TF Times Cited:4 Cited References Count:37},
509     issn = {0031-8965},
510     uri = {<Go to ISI>://000174145200026},
511 tim 2685 }
512    
513 tim 2786 @ARTICLE{Bernal1980,
514     author = {J.M. Bernal and J. G. {de la Torre}},
515     title = {Transport Properties and Hydrodynamic Centers of Rigid Macromolecules
516     with Arbitrary Shape},
517     journal = {Biopolymers},
518     year = {1980},
519     volume = {19},
520     pages = {751-766},
521 tim 2685 }
522    
523 tim 2786 @ARTICLE{Brunger1984,
524     author = {A. Brunger and C. L. Brooks and M. Karplus},
525     title = {Stochastic Boundary-Conditions for Molecular-Dynamics Simulations
526     of St2 Water},
527     journal = {Chemical Physics Letters},
528     year = {1984},
529     volume = {105},
530     pages = {495-500},
531     number = {5},
532     annote = {Sm173 Times Cited:143 Cited References Count:22},
533     issn = {0009-2614},
534     uri = {<Go to ISI>://A1984SM17300007},
535 tim 2685 }
536    
537 tim 2789 @ARTICLE{Budd1999,
538     author = {C. J. Budd and G. J. Collins and W. Z. Huang and R. D. Russell},
539     title = {Self-similar numerical solutions of the porous-medium equation using
540     moving mesh methods},
541     journal = {Philosophical Transactions of the Royal Society of London Series
542     a-Mathematical Physical and Engineering Sciences},
543     year = {1999},
544     volume = {357},
545     pages = {1047-1077},
546     number = {1754},
547     month = {Apr 15},
548     abstract = {This paper examines a synthesis of adaptive mesh methods with the
549     use of symmetry to study a partial differential equation. In particular,
550     it considers methods which admit discrete self-similar solutions,
551     examining the convergence of these to the true self-similar solution
552     as well as their stability. Special attention is given to the nonlinear
553     diffusion equation describing flow in a porous medium.},
554     annote = {199EE Times Cited:4 Cited References Count:14},
555     issn = {1364-503X},
556     uri = {<Go to ISI>://000080466800005},
557     }
558    
559 tim 2786 @ARTICLE{Camp1999,
560     author = {P. J. Camp and M. P. Allen and A. J. Masters},
561     title = {Theory and computer simulation of bent-core molecules},
562     journal = {Journal of Chemical Physics},
563     year = {1999},
564     volume = {111},
565     pages = {9871-9881},
566     number = {21},
567     month = {Dec 1},
568     abstract = {Fluids of hard bent-core molecules have been studied using theory
569     and computer simulation. The molecules are composed of two hard
570     spherocylinders, with length-to-breadth ratio L/D, joined by their
571     ends at an angle 180 degrees - gamma. For L/D = 2 and gamma = 0,10,20
572     degrees, the simulations show isotropic, nematic, smectic, and solid
573     phases. For L/D = 2 and gamma = 30 degrees, only isotropic, nematic,
574     and solid phases are in evidence, which suggests that there is a
575     nematic-smectic-solid triple point at an angle in the range 20 degrees
576     < gamma < 30 degrees. In all of the orientationally ordered fluid
577     phases the order is purely uniaxial. For gamma = 10 degrees and
578     20 degrees, at the studied densities, the solid is also uniaxially
579     ordered, whilst for gamma = 30 degrees the solid layers are biaxially
580     ordered. For L/D = 2 and gamma = 60 degrees and 90 degrees we find
581     no spontaneous orientational ordering. This is shown to be due to
582     the interlocking of dimer pairs which precludes alignment. We find
583     similar results for L/D = 9.5 and gamma = 72 degrees, where an isotropic-biaxial
584     nematic transition is predicted by Onsager theory. Simulations in
585     the biaxial nematic phase show it to be at least mechanically stable
586     with respect to the isotropic phase, however. We have compared the
587     quasi-exact simulation results in the isotropic phase with the predicted
588     equations of state from three theories: the virial expansion containing
589     the second and third virial coefficients; the Parsons-Lee equation
590     of state; an application of Wertheim's theory of associating fluids
591     in the limit of infinite attractive association energy. For all
592     of the molecule elongations and geometries we have simulated, the
593     Wertheim theory proved to be the most accurate. Interestingly, the
594     isotropic equation of state is virtually independent of the dimer
595     bond angle-a feature that is also reflected in the lack of variation
596     with angle of the calculated second and third virial coefficients.
597     (C) 1999 American Institute of Physics. [S0021-9606(99)50445-5].},
598     annote = {255TC Times Cited:24 Cited References Count:38},
599     issn = {0021-9606},
600     uri = {<Go to ISI>://000083685400056},
601 tim 2685 }
602    
603 tim 2786 @ARTICLE{Care2005,
604     author = {C. M. Care and D. J. Cleaver},
605     title = {Computer simulation of liquid crystals},
606     journal = {Reports on Progress in Physics},
607     year = {2005},
608     volume = {68},
609     pages = {2665-2700},
610     number = {11},
611     month = {Nov},
612     abstract = {A review is presented of molecular and mesoscopic computer simulations
613     of liquid crystalline systems. Molecular simulation approaches applied
614     to such systems are described, and the key findings for bulk phase
615     behaviour are reported. Following this, recently developed lattice
616     Boltzmann approaches to the mesoscale modelling of nemato-dynanics
617     are reviewed. This paper concludes with a discussion of possible
618     areas for future development in this field.},
619     annote = {989TU Times Cited:2 Cited References Count:258},
620     issn = {0034-4885},
621     uri = {<Go to ISI>://000233697600004},
622 tim 2685 }
623    
624 tim 2786 @ARTICLE{Carrasco1999,
625     author = {B. Carrasco and J. G. {de la Torre}},
626     title = {Hydrodynamic properties of rigid particles: Comparison of different
627     modeling and computational procedures},
628     journal = {Biophysical Journal},
629     year = {1999},
630     volume = {76},
631     pages = {3044-3057},
632     number = {6},
633     month = {Jun},
634     abstract = {The hydrodynamic properties of rigid particles are calculated from
635     models composed of spherical elements (beads) using theories developed
636     by Kirkwood, Bloomfield, and their coworkers. Bead models have usually
637     been built in such a way that the beads fill the volume occupied
638     by the particles. Sometimes the beads are few and of varying sizes
639     (bead models in the strict sense), and other times there are many
640     small beads (filling models). Because hydrodynamic friction takes
641     place at the molecular surface, another possibility is to use shell
642     models, as originally proposed by Bloomfield. In this work, we have
643     developed procedures to build models of the various kinds, and we
644     describe the theory and methods for calculating their hydrodynamic
645     properties, including approximate methods that may be needed to
646     treat models with a very large number of elements. By combining
647     the various possibilities of model building and hydrodynamic calculation,
648     several strategies can be designed. We have made a quantitative
649     comparison of the performance of the various strategies by applying
650     them to some test cases, for which the properties are known a priori.
651     We provide guidelines and computational tools for bead modeling.},
652     annote = {200TT Times Cited:46 Cited References Count:57},
653     issn = {0006-3495},
654     uri = {<Go to ISI>://000080556700016},
655 tim 2685 }
656    
657 tim 2786 @ARTICLE{Chandra1999,
658     author = {A. Chandra and T. Ichiye},
659     title = {Dynamical properties of the soft sticky dipole model of water: Molecular
660     dynamics simulations},
661     journal = {Journal of Chemical Physics},
662     year = {1999},
663     volume = {111},
664     pages = {2701-2709},
665     number = {6},
666     month = {Aug 8},
667     abstract = {Dynamical properties of the soft sticky dipole (SSD) model of water
668     are calculated by means of molecular dynamics simulations. Since
669     this is not a simple point model, the forces and torques arising
670     from the SSD potential are derived here. Simulations are carried
671     out in the microcanonical ensemble employing the Ewald method for
672     the electrostatic interactions. Various time correlation functions
673     and dynamical quantities associated with the translational and rotational
674     motion of water molecules are evaluated and compared with those
675     of two other commonly used models of liquid water, namely the transferable
676     intermolecular potential-three points (TIP3P) and simple point charge/extended
677     (SPC/E) models, and also with experiments. The dynamical properties
678     of the SSD water model are found to be in good agreement with the
679     experimental results and appear to be better than the TIP3P and
680     SPC/E models in most cases, as has been previously shown for its
681     thermodynamic, structural, and dielectric properties. Also, molecular
682     dynamics simulations of the SSD model are found to run much faster
683     than TIP3P, SPC/E, and other multisite models. (C) 1999 American
684     Institute of Physics. [S0021-9606(99)51430-X].},
685     annote = {221EN Times Cited:14 Cited References Count:66},
686     issn = {0021-9606},
687     uri = {<Go to ISI>://000081711200038},
688 tim 2685 }
689    
690 tim 2789 @ARTICLE{Channell1990,
691     author = {P. J. Channell and C. Scovel},
692     title = {Symplectic Integration of Hamiltonian-Systems},
693     journal = {Nonlinearity},
694     year = {1990},
695     volume = {3},
696     pages = {231-259},
697     number = {2},
698     month = {may},
699     annote = {Dk631 Times Cited:152 Cited References Count:34},
700     issn = {0951-7715},
701     uri = {<Go to ISI>://A1990DK63100001},
702     }
703    
704     @ARTICLE{Chen2003,
705     author = {B. Chen and F. Solis},
706     title = {Explicit mixed finite order Runge-Kutta methods},
707     journal = {Applied Numerical Mathematics},
708     year = {2003},
709     volume = {44},
710     pages = {21-30},
711     number = {1-2},
712     month = {Jan},
713     abstract = {We investigate the asymptotic behavior of systems of nonlinear differential
714     equations and introduce a family of mixed methods from combinations
715     of explicit Runge-Kutta methods. These methods have better stability
716     behavior than traditional Runge-Kutta methods and generally extend
717     the range of validity of the calculated solutions. These methods
718     also give a way of determining if the numerical solutions are real
719     or spurious. Emphasis is put on examples coming from mathematical
720     models in ecology. (C) 2002 IMACS. Published by Elsevier Science
721     B.V. All rights reserved.},
722     annote = {633ZD Times Cited:0 Cited References Count:9},
723     issn = {0168-9274},
724     uri = {<Go to ISI>://000180314200002},
725     }
726    
727 tim 2786 @ARTICLE{Cheung2004,
728     author = {D. L. Cheung and S. J. Clark and M. R. Wilson},
729     title = {Calculation of flexoelectric coefficients for a nematic liquid crystal
730     by atomistic simulation},
731     journal = {Journal of Chemical Physics},
732     year = {2004},
733     volume = {121},
734     pages = {9131-9139},
735     number = {18},
736     month = {Nov 8},
737     abstract = {Equilibrium molecular dynamics calculations have been performed for
738     the liquid crystal molecule n-4-(trans-4-n-pentylcyclohexyl)benzonitrile
739     (PCH5) using a fully atomistic model. Simulation data have been
740     obtained for a series of temperatures in the nematic phase. The
741     simulation data have been used to calculate the flexoelectric coefficients
742     e(s) and e(b) using the linear response formalism of Osipov and
743     Nemtsov [M. A. Osipov and V. B. Nemtsov, Sov. Phys. Crstallogr.
744     31, 125 (1986)]. The temperature and order parameter dependence
745     of e(s) and e(b) are examined, as are separate contributions from
746     different intermolecular interactions. Values of e(s) and e(b) calculated
747     from simulation are consistent with those found from experiment.
748     (C) 2004 American Institute of Physics.},
749     annote = {866UM Times Cited:4 Cited References Count:61},
750     issn = {0021-9606},
751     uri = {<Go to ISI>://000224798900053},
752 tim 2685 }
753    
754 tim 2786 @ARTICLE{Cheung2002,
755     author = {D. L. Cheung and S. J. Clark and M. R. Wilson},
756     title = {Calculation of the rotational viscosity of a nematic liquid crystal},
757     journal = {Chemical Physics Letters},
758     year = {2002},
759     volume = {356},
760     pages = {140-146},
761     number = {1-2},
762     month = {Apr 15},
763     abstract = {Equilibrium molecular dynamics calculations have been performed for
764     the liquid crystal molecule n-4-(trans-4-npentylcyclohexyl)benzonitrile
765     (PCH5) using a fully atomistic model. Simulation data has been obtained
766     for a series of temperatures in the nematic phase. The rotational
767     viscosity co-efficient gamma(1), has been calculated using the angular
768     velocity correlation function of the nematic director, n, the mean
769     squared diffusion of n and statistical mechanical methods based
770     on the rotational diffusion co-efficient. We find good agreement
771     between the first two methods and experimental values. (C) 2002
772     Published by Elsevier Science B.V.},
773     annote = {547KF Times Cited:8 Cited References Count:31},
774     issn = {0009-2614},
775     uri = {<Go to ISI>://000175331000020},
776 tim 2685 }
777    
778 tim 2786 @ARTICLE{Chin2004,
779     author = {S. A. Chin},
780     title = {Dynamical multiple-time stepping methods for overcoming resonance
781     instabilities},
782     journal = {Journal of Chemical Physics},
783     year = {2004},
784     volume = {120},
785     pages = {8-13},
786     number = {1},
787     month = {Jan 1},
788     abstract = {Current molecular dynamics simulations of biomolecules using multiple
789     time steps to update the slowly changing force are hampered by instabilities
790     beginning at time steps near the half period of the fastest vibrating
791     mode. These #resonance# instabilities have became a critical barrier
792     preventing the long time simulation of biomolecular dynamics. Attempts
793     to tame these instabilities by altering the slowly changing force
794     and efforts to damp them out by Langevin dynamics do not address
795     the fundamental cause of these instabilities. In this work, we trace
796     the instability to the nonanalytic character of the underlying spectrum
797     and show that a correct splitting of the Hamiltonian, which renders
798     the spectrum analytic, restores stability. The resulting Hamiltonian
799     dictates that in addition to updating the momentum due to the slowly
800     changing force, one must also update the position with a modified
801     mass. Thus multiple-time stepping must be done dynamically. (C)
802     2004 American Institute of Physics.},
803     annote = {757TK Times Cited:1 Cited References Count:22},
804     issn = {0021-9606},
805     uri = {<Go to ISI>://000187577400003},
806 tim 2685 }
807    
808 tim 2786 @ARTICLE{Cook2000,
809     author = {M. J. Cook and M. R. Wilson},
810     title = {Simulation studies of dipole correlation in the isotropic liquid
811     phase},
812     journal = {Liquid Crystals},
813     year = {2000},
814     volume = {27},
815     pages = {1573-1583},
816     number = {12},
817     month = {Dec},
818     abstract = {The Kirkwood correlation factor g(1) determines the preference for
819     local parallel or antiparallel dipole association in the isotropic
820     phase. Calamitic mesogens with longitudinal dipole moments and Kirkwood
821     factors greater than 1 have an enhanced effective dipole moment
822     along the molecular long axis. This leads to higher values of Delta
823     epsilon in the nematic phase. This paper describes state-of-the-art
824     molecular dynamics simulations of two calamitic mesogens 4-(trans-4-n-pentylcyclohexyl)benzonitrile
825     (PCH5) and 4-(trans-4-n-pentylcyclohexyl) chlorobenzene (PCH5-Cl)
826     in the isotropic liquid phase using an all-atom force field and
827     taking long range electrostatics into account using an Ewald summation.
828     Using this methodology, PCH5 is seen to prefer antiparallel dipole
829     alignment with a negative g(1) and PCH5-Cl is seen to prefer parallel
830     dipole alignment with a positive g(1); this is in accordance with
831     experimental dielectric measurements. Analysis of the molecular
832     dynamics trajectories allows an assessment of why these molecules
833     behave differently.},
834     annote = {376BF Times Cited:10 Cited References Count:16},
835     issn = {0267-8292},
836     uri = {<Go to ISI>://000165437800002},
837 tim 2685 }
838    
839 tim 2786 @ARTICLE{Cui2003,
840     author = {B. X. Cui and M. Y. Shen and K. F. Freed},
841     title = {Folding and misfolding of the papillomavirus E6 interacting peptide
842     E6ap},
843     journal = {Proceedings of the National Academy of Sciences of the United States
844     of America},
845     year = {2003},
846     volume = {100},
847     pages = {7087-7092},
848     number = {12},
849     month = {Jun 10},
850     abstract = {All-atom Langevin dynamics simulations have been performed to study
851     the folding pathways of the 18-residue binding domain fragment E6ap
852     of the human papillomavirus E6 interacting peptide. Six independent
853     folding trajectories, with a total duration of nearly 2 mus, all
854     lead to the same native state in which the E6ap adopts a fluctuating
855     a-helix structure in the central portion (Ser-4-Leu-13) but with
856     very flexible N and C termini. Simulations starting from different
857     core configurations exhibit the E6ap folding dynamics as either
858     a two- or three-state folder with an intermediate misfolded state.
859     The essential leucine hydrophobic core (Leu-9, Leu-12, and Leu-13)
860     is well conserved in the native-state structure but absent in the
861     intermediate structure, suggesting that the leucine core is not
862     only essential for the binding activity of E6ap but also important
863     for the stability of the native structure. The free energy landscape
864     reveals a significant barrier between the basins separating the
865     native and misfolded states. We also discuss the various underlying
866     forces that drive the peptide into its native state.},
867     annote = {689LC Times Cited:3 Cited References Count:48},
868     issn = {0027-8424},
869     uri = {<Go to ISI>://000183493500037},
870 tim 2685 }
871    
872 tim 2786 @ARTICLE{Denisov2003,
873     author = {S. I. Denisov and T. V. Lyutyy and K. N. Trohidou},
874     title = {Magnetic relaxation in finite two-dimensional nanoparticle ensembles},
875     journal = {Physical Review B},
876     year = {2003},
877     volume = {67},
878     pages = {-},
879     number = {1},
880     month = {Jan 1},
881     abstract = {We study the slow phase of thermally activated magnetic relaxation
882     in finite two-dimensional ensembles of dipolar interacting ferromagnetic
883     nanoparticles whose easy axes of magnetization are perpendicular
884     to the distribution plane. We develop a method to numerically simulate
885     the magnetic relaxation for the case that the smallest heights of
886     the potential barriers between the equilibrium directions of the
887     nanoparticle magnetic moments are much larger than the thermal energy.
888     Within this framework, we analyze in detail the role that the correlations
889     of the nanoparticle magnetic moments and the finite size of the
890     nanoparticle ensemble play in magnetic relaxation.},
891     annote = {642XH Times Cited:11 Cited References Count:31},
892     issn = {1098-0121},
893     uri = {<Go to ISI>://000180830400056},
894 tim 2685 }
895    
896 tim 2786 @ARTICLE{Derreumaux1998,
897     author = {P. Derreumaux and T. Schlick},
898     title = {The loop opening/closing motion of the enzyme triosephosphate isomerase},
899     journal = {Biophysical Journal},
900     year = {1998},
901     volume = {74},
902     pages = {72-81},
903     number = {1},
904     month = {Jan},
905     abstract = {To explore the origin of the large-scale motion of triosephosphate
906     isomerase's flexible loop (residues 166 to 176) at the active site,
907     several simulation protocols are employed both for the free enzyme
908     in vacuo and for the free enzyme with some solvent modeling: high-temperature
909     Langevin dynamics simulations, sampling by a #dynamics##driver#
910     approach, and potential-energy surface calculations. Our focus is
911     on obtaining the energy barrier to the enzyme's motion and establishing
912     the nature of the loop movement. Previous calculations did not determine
913     this energy barrier and the effect of solvent on the barrier. High-temperature
914     molecular dynamics simulations and crystallographic studies have
915     suggested a rigid-body motion with two hinges located at both ends
916     of the loop; Brownian dynamics simulations at room temperature pointed
917     to a very flexible behavior. The present simulations and analyses
918     reveal that although solute/solvent hydrogen bonds play a crucial
919     role in lowering the energy along the pathway, there still remains
920     a high activation barrier, This finding clearly indicates that,
921     if the loop opens and closes in the absence of a substrate at standard
922     conditions (e.g., room temperature, appropriate concentration of
923     isomerase), the time scale for transition is not in the nanosecond
924     but rather the microsecond range. Our results also indicate that
925     in the context of spontaneous opening in the free enzyme, the motion
926     is of rigid-body type and that the specific interaction between
927     residues Ala(176) and Tyr(208) plays a crucial role in the loop
928     opening/closing mechanism.},
929     annote = {Zl046 Times Cited:30 Cited References Count:29},
930     issn = {0006-3495},
931     uri = {<Go to ISI>://000073393400009},
932 tim 2685 }
933    
934 tim 2786 @ARTICLE{Dullweber1997,
935     author = {A. Dullweber and B. Leimkuhler and R. McLachlan},
936     title = {Symplectic splitting methods for rigid body molecular dynamics},
937     journal = {Journal of Chemical Physics},
938     year = {1997},
939     volume = {107},
940     pages = {5840-5851},
941     number = {15},
942     month = {Oct 15},
943     abstract = {Rigid body molecular models possess symplectic structure and time-reversal
944     symmetry. Standard numerical integration methods destroy both properties,
945     introducing nonphysical dynamical behavior such as numerically induced
946     dissipative states and drift in the energy during long term simulations.
947     This article describes the construction, implementation, and practical
948     application of fast explicit symplectic-reversible integrators for
949     multiple rigid body molecular simulations, These methods use a reduction
950     to Euler equations for the free rigid body, together with a symplectic
951     splitting technique. In every time step, the orientational dynamics
952     of each rigid body is integrated by a sequence of planar rotations.
953     Besides preserving the symplectic and reversible structures of the
954     flow, this scheme accurately conserves the total angular momentum
955     of a system of interacting rigid bodies. Excellent energy conservation
956     fan be obtained relative to traditional methods, especially in long-time
957     simulations. The method is implemented in a research code, ORIENT
958     and compared with a quaternion/extrapolation scheme for the TIP4P
959     model of water. Our experiments show that the symplectic-reversible
960     scheme is far superior to the more traditional quaternion method.
961     (C) 1997 American Institute of Physics.},
962     annote = {Ya587 Times Cited:35 Cited References Count:32},
963     issn = {0021-9606},
964     uri = {<Go to ISI>://A1997YA58700024},
965 tim 2685 }
966    
967 tim 2786 @ARTICLE{Edwards2005,
968     author = {S. A. Edwards and D. R. M. Williams},
969     title = {Stretching a single diblock copolymer in a selective solvent: Langevin
970     dynamics simulations},
971     journal = {Macromolecules},
972     year = {2005},
973     volume = {38},
974     pages = {10590-10595},
975     number = {25},
976     month = {Dec 13},
977     abstract = {Using the Langevin dynamics technique, we have carried out simulations
978     of a single-chain flexible diblock copolymer. The polymer consists
979     of two blocks of equal length, one very poorly solvated and the
980     other close to theta-conditions. We study what happens when such
981     a polymer is stretched, for a range of different stretching speeds,
982     and correlate our observations with features in the plot of force
983     vs extension. We find that at slow speeds this force profile does
984     not increase monotonically, in disagreement with earlier predictions,
985     and that at high speeds there is a strong dependence on which end
986     of the polymer is pulled, as well as a high level of hysteresis.},
987     annote = {992EC Times Cited:0 Cited References Count:13},
988     issn = {0024-9297},
989     uri = {<Go to ISI>://000233866200035},
990 tim 2685 }
991    
992 tim 2786 @ARTICLE{Egberts1988,
993     author = {E. Egberts and H. J. C. Berendsen},
994     title = {Molecular-Dynamics Simulation of a Smectic Liquid-Crystal with Atomic
995     Detail},
996     journal = {Journal of Chemical Physics},
997     year = {1988},
998     volume = {89},
999     pages = {3718-3732},
1000     number = {6},
1001     month = {Sep 15},
1002     annote = {Q0188 Times Cited:219 Cited References Count:43},
1003     issn = {0021-9606},
1004     uri = {<Go to ISI>://A1988Q018800036},
1005 tim 2685 }
1006    
1007 tim 2786 @ARTICLE{Ermak1978,
1008     author = {D. L. Ermak and J. A. Mccammon},
1009     title = {Brownian Dynamics with Hydrodynamic Interactions},
1010     journal = {Journal of Chemical Physics},
1011     year = {1978},
1012     volume = {69},
1013     pages = {1352-1360},
1014     number = {4},
1015     annote = {Fp216 Times Cited:785 Cited References Count:42},
1016     issn = {0021-9606},
1017     uri = {<Go to ISI>://A1978FP21600004},
1018 tim 2685 }
1019    
1020 tim 2786 @ARTICLE{Fennell2004,
1021     author = {C. J. Fennell and J. D. Gezelter},
1022     title = {On the structural and transport properties of the soft sticky dipole
1023     and related single-point water models},
1024     journal = {Journal of Chemical Physics},
1025     year = {2004},
1026     volume = {120},
1027     pages = {9175-9184},
1028     number = {19},
1029     month = {May 15},
1030     abstract = {The density maximum and temperature dependence of the self-diffusion
1031     constant were investigated for the soft sticky dipole (SSD) water
1032     model and two related reparametrizations of this single-point model.
1033     A combination of microcanonical and isobaric-isothermal molecular
1034     dynamics simulations was used to calculate these properties, both
1035     with and without the use of reaction field to handle long-range
1036     electrostatics. The isobaric-isothermal simulations of the melting
1037     of both ice-I-h and ice-I-c showed a density maximum near 260 K.
1038     In most cases, the use of the reaction field resulted in calculated
1039     densities which were significantly lower than experimental densities.
1040     Analysis of self-diffusion constants shows that the original SSD
1041     model captures the transport properties of experimental water very
1042     well in both the normal and supercooled liquid regimes. We also
1043     present our reparametrized versions of SSD for use both with the
1044     reaction field or without any long-range electrostatic corrections.
1045     These are called the SSD/RF and SSD/E models, respectively. These
1046     modified models were shown to maintain or improve upon the experimental
1047     agreement with the structural and transport properties that can
1048     be obtained with either the original SSD or the density-corrected
1049     version of the original model (SSD1). Additionally, a novel low-density
1050     ice structure is presented which appears to be the most stable ice
1051     structure for the entire SSD family. (C) 2004 American Institute
1052     of Physics.},
1053     annote = {816YY Times Cited:5 Cited References Count:39},
1054     issn = {0021-9606},
1055     uri = {<Go to ISI>://000221146400032},
1056 tim 2685 }
1057    
1058 tim 2786 @ARTICLE{Fernandes2002,
1059     author = {M. X. Fernandes and J. G. {de la Torre}},
1060     title = {Brownian dynamics simulation of rigid particles of arbitrary shape
1061     in external fields},
1062     journal = {Biophysical Journal},
1063     year = {2002},
1064     volume = {83},
1065     pages = {3039-3048},
1066     number = {6},
1067     month = {Dec},
1068     abstract = {We have developed a Brownian dynamics simulation algorithm to generate
1069     Brownian trajectories of an isolated, rigid particle of arbitrary
1070     shape in the presence of electric fields or any other external agents.
1071     Starting from the generalized diffusion tensor, which can be calculated
1072     with the existing HYDRO software, the new program BROWNRIG (including
1073     a case-specific subprogram for the external agent) carries out a
1074     simulation that is analyzed later to extract the observable dynamic
1075     properties. We provide a variety of examples of utilization of this
1076     method, which serve as tests of its performance, and also illustrate
1077     its applicability. Examples include free diffusion, transport in
1078     an electric field, and diffusion in a restricting environment.},
1079     annote = {633AD Times Cited:2 Cited References Count:43},
1080     issn = {0006-3495},
1081     uri = {<Go to ISI>://000180256300012},
1082 tim 2685 }
1083    
1084 tim 2786 @ARTICLE{Gay1981,
1085     author = {J. G. Gay and B. J. Berne},
1086     title = {Modification of the Overlap Potential to Mimic a Linear Site-Site
1087     Potential},
1088     journal = {Journal of Chemical Physics},
1089     year = {1981},
1090     volume = {74},
1091     pages = {3316-3319},
1092     number = {6},
1093     annote = {Lj347 Times Cited:482 Cited References Count:13},
1094     issn = {0021-9606},
1095     uri = {<Go to ISI>://A1981LJ34700029},
1096 tim 2685 }
1097    
1098 tim 2786 @ARTICLE{Gelin1999,
1099     author = {M. F. Gelin},
1100     title = {Inertial effects in the Brownian dynamics with rigid constraints},
1101     journal = {Macromolecular Theory and Simulations},
1102     year = {1999},
1103     volume = {8},
1104     pages = {529-543},
1105     number = {6},
1106     month = {Nov},
1107     abstract = {To investigate the influence of inertial effects on the dynamics of
1108     an assembly of beads subjected to rigid constraints and placed in
1109     a buffer medium, a convenient method to introduce suitable generalized
1110     coordinates is presented. Without any restriction on the nature
1111     of the soft forces involved (both stochastic and deterministic),
1112     pertinent Langevin equations are derived. Provided that the Brownian
1113     forces are Gaussian and Markovian, the corresponding Fokker-Planck
1114     equation (FPE) is obtained in the complete phase space of generalized
1115     coordinates and momenta. The correct short time behavior for correlation
1116     functions (CFs) of generalized coordinates is established, and the
1117     diffusion equation with memory (DEM) is deduced from the FPE in
1118     the high friction Limit. The DEM is invoked to perform illustrative
1119     calculations in two dimensions of the orientational CFs for once
1120     broken nonrigid rods immobilized on a surface. These calculations
1121     reveal that the CFs under certain conditions exhibit an oscillatory
1122     behavior, which is irreproducible within the standard diffusion
1123     equation. Several methods are considered for the approximate solution
1124     of the DEM, and their application to three dimensional DEMs is discussed.},
1125     annote = {257MM Times Cited:2 Cited References Count:82},
1126     issn = {1022-1344},
1127     uri = {<Go to ISI>://000083785700002},
1128 tim 2685 }
1129    
1130 tim 2786 @BOOK{Goldstein2001,
1131     title = {Classical Mechanics},
1132     publisher = {Addison Wesley},
1133     year = {2001},
1134     author = {H. Goldstein and C. Poole and J. Safko},
1135     address = {San Francisco},
1136     edition = {3rd},
1137 tim 2685 }
1138    
1139 tim 2786 @ARTICLE{Gray2003,
1140     author = {J. J. Gray and S. Moughon and C. Wang and O. Schueler-Furman and
1141     B. Kuhlman and C. A. Rohl and D. Baker},
1142     title = {Protein-protein docking with simultaneous optimization of rigid-body
1143     displacement and side-chain conformations},
1144     journal = {Journal of Molecular Biology},
1145     year = {2003},
1146     volume = {331},
1147     pages = {281-299},
1148     number = {1},
1149     month = {Aug 1},
1150     abstract = {Protein-protein docking algorithms provide a means to elucidate structural
1151     details for presently unknown complexes. Here, we present and evaluate
1152     a new method to predict protein-protein complexes from the coordinates
1153     of the unbound monomer components. The method employs a low-resolution,
1154     rigid-body, Monte Carlo search followed by simultaneous optimization
1155     of backbone displacement and side-chain conformations using Monte
1156     Carlo minimization. Up to 10(5) independent simulations are carried
1157     out, and the resulting #decoys# are ranked using an energy function
1158     dominated by van der Waals interactions, an implicit solvation model,
1159     and an orientation-dependent hydrogen bonding potential. Top-ranking
1160     decoys are clustered to select the final predictions. Small-perturbation
1161     studies reveal the formation of binding funnels in 42 of 54 cases
1162     using coordinates derived from the bound complexes and in 32 of
1163     54 cases using independently determined coordinates of one or both
1164     monomers. Experimental binding affinities correlate with the calculated
1165     score function and explain the predictive success or failure of
1166     many targets. Global searches using one or both unbound components
1167     predict at least 25% of the native residue-residue contacts in 28
1168     of the 32 cases where binding funnels exist. The results suggest
1169     that the method may soon be useful for generating models of biologically
1170     important complexes from the structures of the isolated components,
1171     but they also highlight the challenges that must be met to achieve
1172     consistent and accurate prediction of protein-protein interactions.
1173     (C) 2003 Elsevier Ltd. All rights reserved.},
1174     annote = {704QL Times Cited:48 Cited References Count:60},
1175     issn = {0022-2836},
1176     uri = {<Go to ISI>://000184351300022},
1177 tim 2685 }
1178    
1179 tim 2789 @ARTICLE{Greengard1994,
1180     author = {L. Greengard},
1181     title = {Fast Algorithms for Classical Physics},
1182     journal = {Science},
1183     year = {1994},
1184     volume = {265},
1185     pages = {909-914},
1186     number = {5174},
1187     month = {Aug 12},
1188     abstract = {Some of the recently developed fast summation methods that have arisen
1189     in scientific computing are described. These methods require an
1190     amount of work proportional to N or N log N to evaluate all pairwise
1191     interactions in an ensemble of N particles. Traditional methods,
1192     by contrast, require an amount of work proportional to N-2. AS a
1193     result, large-scale simulations can be carried out using only modest
1194     computer resources. In combination with supercomputers, it is possible
1195     to address questions that were previously out of reach. Problems
1196     from diffusion, gravitation, and wave propagation are considered.},
1197     annote = {Pb499 Times Cited:99 Cited References Count:44},
1198     issn = {0036-8075},
1199     uri = {<Go to ISI>://A1994PB49900031},
1200     }
1201    
1202     @ARTICLE{Greengard1987,
1203     author = {L. Greengard and V. Rokhlin},
1204     title = {A Fast Algorithm for Particle Simulations},
1205     journal = {Journal of Computational Physics},
1206     year = {1987},
1207     volume = {73},
1208     pages = {325-348},
1209     number = {2},
1210     month = {Dec},
1211     annote = {L0498 Times Cited:899 Cited References Count:7},
1212     issn = {0021-9991},
1213     uri = {<Go to ISI>://A1987L049800006},
1214     }
1215    
1216     @ARTICLE{Hairer1997,
1217     author = {E. Hairer and C. Lubich},
1218     title = {The life-span of backward error analysis for numerical integrators},
1219     journal = {Numerische Mathematik},
1220     year = {1997},
1221     volume = {76},
1222     pages = {441-462},
1223     number = {4},
1224     month = {Jun},
1225     abstract = {Backward error analysis is a useful tool for the study of numerical
1226     approximations to ordinary differential equations. The numerical
1227     solution is formally interpreted as the exact solution of a perturbed
1228     differential equation, given as a formal and usually divergent series
1229     in powers of the step size. For a rigorous analysis, this series
1230     has to be truncated. In this article we study the influence of this
1231     truncation to the difference between the numerical solution and
1232     the exact solution of the perturbed differential equation. Results
1233     on the long-time behaviour of numerical solutions are obtained in
1234     this way. We present applications to the numerical phase portrait
1235     near hyperbolic equilibrium points, to asymptotically stable periodic
1236     orbits and Hopf bifurcation, and to energy conservation and approximation
1237     of invariant tori in Hamiltonian systems.},
1238     annote = {Xj488 Times Cited:50 Cited References Count:19},
1239     issn = {0029-599X},
1240     uri = {<Go to ISI>://A1997XJ48800002},
1241     }
1242    
1243 tim 2786 @ARTICLE{Hao1993,
1244     author = {M. H. Hao and M. R. Pincus and S. Rackovsky and H. A. Scheraga},
1245     title = {Unfolding and Refolding of the Native Structure of Bovine Pancreatic
1246     Trypsin-Inhibitor Studied by Computer-Simulations},
1247     journal = {Biochemistry},
1248     year = {1993},
1249     volume = {32},
1250     pages = {9614-9631},
1251     number = {37},
1252     month = {Sep 21},
1253     abstract = {A new procedure for studying the folding and unfolding of proteins,
1254     with an application to bovine pancreatic trypsin inhibitor (BPTI),
1255     is reported. The unfolding and refolding of the native structure
1256     of the protein are characterized by the dimensions of the protein,
1257     expressed in terms of the three principal radii of the structure
1258     considered as an ellipsoid. A dynamic equation, describing the variations
1259     of the principal radii on the unfolding path, and a numerical procedure
1260     to solve this equation are proposed. Expanded and distorted conformations
1261     are refolded to the native structure by a dimensional-constraint
1262     energy minimization procedure. A unique and reproducible unfolding
1263     pathway for an intermediate of BPTI lacking the [30,51] disulfide
1264     bond is obtained. The resulting unfolded conformations are extended;
1265     they contain near-native local structure, but their longest principal
1266     radii are more than 2.5 times greater than that of the native structure.
1267     The most interesting finding is that the majority of expanded conformations,
1268     generated under various conditions, can be refolded closely to the
1269     native structure, as measured by the correct overall chain fold,
1270     by the rms deviations from the native structure of only 1.9-3.1
1271     angstrom, and by the energy differences of about 10 kcal/mol from
1272     the native structure. Introduction of the [30,51] disulfide bond
1273     at this stage, followed by minimization, improves the closeness
1274     of the refolded structures to the native structure, reducing the
1275     rms deviations to 0.9-2.0 angstrom. The unique refolding of these
1276     expanded structures over such a large conformational space implies
1277     that the folding is strongly dictated by the interactions in the
1278     amino acid sequence of BPTI. The simulations indicate that, under
1279     conditions that favor a compact structure as mimicked by the volume
1280     constraints in our algorithm; the expanded conformations have a
1281     strong tendency to move toward the native structure; therefore,
1282     they probably would be favorable folding intermediates. The results
1283     presented here support a general model for protein folding, i.e.,
1284     progressive formation of partially folded structural units, followed
1285     by collapse to the compact native structure. The general applicability
1286     of the procedure is also discussed.},
1287     annote = {Ly294 Times Cited:27 Cited References Count:57},
1288     issn = {0006-2960},
1289     uri = {<Go to ISI>://A1993LY29400014},
1290 tim 2685 }
1291    
1292 tim 2786 @ARTICLE{Hinsen2000,
1293     author = {K. Hinsen and A. J. Petrescu and S. Dellerue and M. C. Bellissent-Funel
1294     and G. R. Kneller},
1295     title = {Harmonicity in slow protein dynamics},
1296     journal = {Chemical Physics},
1297     year = {2000},
1298     volume = {261},
1299     pages = {25-37},
1300     number = {1-2},
1301     month = {Nov 1},
1302     abstract = {The slow dynamics of proteins around its native folded state is usually
1303     described by diffusion in a strongly anharmonic potential. In this
1304     paper, we try to understand the form and origin of the anharmonicities,
1305     with the principal aim of gaining a better understanding of the
1306     principal motion types, but also in order to develop more efficient
1307     numerical methods for simulating neutron scattering spectra of large
1308     proteins. First, we decompose a molecular dynamics (MD) trajectory
1309     of 1.5 ns for a C-phycocyanin dimer surrounded by a layer of water
1310     into three contributions that we expect to be independent: the global
1311     motion of the residues, the rigid-body motion of the sidechains
1312     relative to the backbone, and the internal deformations of the sidechains.
1313     We show that they are indeed almost independent by verifying the
1314     factorization of the incoherent intermediate scattering function.
1315     Then, we show that the global residue motions, which include all
1316     large-scale backbone motions, can be reproduced by a simple harmonic
1317     model which contains two contributions: a short-time vibrational
1318     term, described by a standard normal mode calculation in a local
1319     minimum, and a long-time diffusive term, described by Brownian motion
1320     in an effective harmonic potential. The potential and the friction
1321     constants were fitted to the MD data. The major anharmonic contribution
1322     to the incoherent intermediate scattering function comes from the
1323     rigid-body diffusion of the sidechains. This model can be used to
1324     calculate scattering functions for large proteins and for long-time
1325     scales very efficiently, and thus provides a useful complement to
1326     MD simulations, which are best suited for detailed studies on smaller
1327     systems or for shorter time scales. (C) 2000 Elsevier Science B.V.
1328     All rights reserved.},
1329     annote = {Sp. Iss. SI 368MT Times Cited:16 Cited References Count:31},
1330     issn = {0301-0104},
1331     uri = {<Go to ISI>://000090121700003},
1332 tim 2685 }
1333    
1334 tim 2786 @ARTICLE{Ho1992,
1335     author = {C. Ho and C. D. Stubbs},
1336     title = {Hydration at the Membrane Protein-Lipid Interface},
1337     journal = {Biophysical Journal},
1338     year = {1992},
1339     volume = {63},
1340     pages = {897-902},
1341     number = {4},
1342     month = {Oct},
1343     abstract = {Evidence has been found for the existence water at the protein-lipid
1344     hydrophobic interface ot the membrane proteins, gramicidin and apocytochrome
1345     C, using two related fluorescence spectroscopic approaches. The
1346     first approach exploited the fact that the presence of water in
1347     the excited state solvent cage of a fluorophore increases the rate
1348     of decay. For 1,6-diphenyl-1,3,5-hexatriene (DPH) and 1-palmitoyl-2-[[2-[4-(6-phenyl-trans-1,3,5-hexatrienyl)
1349     phenyl]ethyl]carbonyl]-3-sn-PC (DPH-PC), where the fluorophores
1350     are located in the hydrophobic core of the lipid bilayer, the introduction
1351     of gramicidin reduced the fluorescence lifetime, indicative of an
1352     increased presence of water in the bilayer. Since a high protein:lipid
1353     ratio was used, the fluorophores were forced to be adjacent to the
1354     protein hydrophobic surface, hence the presence of water in this
1355     region could be inferred. Cholesterol is known to reduce the water
1356     content of lipid bilayers and this effect was maintained at the
1357     protein-lipid interface with both gramicidin and apocytochrome C,
1358     again suggesting hydration in this region. The second approach was
1359     to use the fluorescence enhancement induced by exchanging deuterium
1360     oxide (D2O) for H2O. Both the fluorescence intensities of trimethylammonium-DPH,
1361     located in the lipid head group region, and of the gramicidin intrinsic
1362     tryptophans were greater in a D2O buffer compared with H2O, showing
1363     that the fluorophores were exposed to water in the bilayer at the
1364     protein-lipid interface. In the presence of cholesterol the fluorescence
1365     intensity ratio of D2O to H2O decreased, indicating a removal of
1366     water by the cholesterol, in keeping with the lifetime data. Altered
1367     hydration at the protein-lipid interface could affect conformation,
1368     thereby offering a new route by which membrane protein functioning
1369     may be modified.},
1370     annote = {Ju251 Times Cited:55 Cited References Count:44},
1371     issn = {0006-3495},
1372     uri = {<Go to ISI>://A1992JU25100002},
1373 tim 2685 }
1374    
1375 tim 2789 @BOOK{Hockney1981,
1376     title = {Computer Simulation Using Particles},
1377     publisher = {McGraw-Hill},
1378     year = {1981},
1379     author = {R.W. Hockney and J.W. Eastwood},
1380     address = {New York},
1381     }
1382    
1383 tim 2786 @ARTICLE{Huh2004,
1384     author = {Y. Huh and N. M. Cann},
1385     title = {Discrimination in isotropic, nematic, and smectic phases of chiral
1386     calamitic molecules: A computer simulation study},
1387     journal = {Journal of Chemical Physics},
1388     year = {2004},
1389     volume = {121},
1390     pages = {10299-10308},
1391     number = {20},
1392     month = {Nov 22},
1393     abstract = {Racemic fluids of chiral calamitic molecules are investigated with
1394     molecular dynamics simulations. In particular, the phase behavior
1395     as a function of density is examined for eight racemates. The relationship
1396     between chiral discrimination and orientational order in the phase
1397     is explored. We find that the transition from the isotropic phase
1398     to a liquid crystal phase is accompanied by an increase in chiral
1399     discrimination, as measured by differences in radial distributions.
1400     Among ordered phases, discrimination is largest for smectic phases
1401     with a significant preference for heterochiral contact within the
1402     layers. (C) 2004 American Institute of Physics.},
1403     annote = {870FJ Times Cited:0 Cited References Count:63},
1404     issn = {0021-9606},
1405     uri = {<Go to ISI>://000225042700059},
1406 tim 2685 }
1407    
1408 tim 2786 @ARTICLE{Izaguirre2001,
1409     author = {J. A. Izaguirre and D. P. Catarello and J. M. Wozniak and R. D. Skeel},
1410     title = {Langevin stabilization of molecular dynamics},
1411     journal = {Journal of Chemical Physics},
1412     year = {2001},
1413     volume = {114},
1414     pages = {2090-2098},
1415     number = {5},
1416     month = {Feb 1},
1417     abstract = {In this paper we show the possibility of using very mild stochastic
1418     damping to stabilize long time step integrators for Newtonian molecular
1419     dynamics. More specifically, stable and accurate integrations are
1420     obtained for damping coefficients that are only a few percent of
1421     the natural decay rate of processes of interest, such as the velocity
1422     autocorrelation function. Two new multiple time stepping integrators,
1423     Langevin Molly (LM) and Brunger-Brooks-Karplus-Molly (BBK-M), are
1424     introduced in this paper. Both use the mollified impulse method
1425     for the Newtonian term. LM uses a discretization of the Langevin
1426     equation that is exact for the constant force, and BBK-M uses the
1427     popular Brunger-Brooks-Karplus integrator (BBK). These integrators,
1428     along with an extrapolative method called LN, are evaluated across
1429     a wide range of damping coefficient values. When large damping coefficients
1430     are used, as one would for the implicit modeling of solvent molecules,
1431     the method LN is superior, with LM closely following. However, with
1432     mild damping of 0.2 ps(-1), LM produces the best results, allowing
1433     long time steps of 14 fs in simulations containing explicitly modeled
1434     flexible water. With BBK-M and the same damping coefficient, time
1435     steps of 12 fs are possible for the same system. Similar results
1436     are obtained for a solvated protein-DNA simulation of estrogen receptor
1437     ER with estrogen response element ERE. A parallel version of BBK-M
1438     runs nearly three times faster than the Verlet-I/r-RESPA (reversible
1439     reference system propagator algorithm) when using the largest stable
1440     time step on each one, and it also parallelizes well. The computation
1441     of diffusion coefficients for flexible water and ER/ERE shows that
1442     when mild damping of up to 0.2 ps-1 is used the dynamics are not
1443     significantly distorted. (C) 2001 American Institute of Physics.},
1444     annote = {397CQ Times Cited:14 Cited References Count:36},
1445     issn = {0021-9606},
1446     uri = {<Go to ISI>://000166676100020},
1447 tim 2685 }
1448    
1449 tim 2786 @ARTICLE{Gray2003,
1450     author = {J.~J Gray,S. Moughon, C. Wang },
1451     title = {Protein-protein docking with simultaneous optimization of rigid-body
1452     displacement and side-chain conformations},
1453     journal = {jmb},
1454     year = {2003},
1455     volume = {331},
1456     pages = {281-299},
1457 tim 2685 }
1458    
1459 tim 2789 @ARTICLE{Torre1977,
1460     author = {Jose Garcia De La Torre, V.A. Bloomfield},
1461     title = {Hydrodynamic properties of macromolecular complexes. I. Translation},
1462     journal = {Biopolymers},
1463     year = {1977},
1464     volume = {16},
1465     pages = {1747-1763},
1466     }
1467    
1468     @ARTICLE{Kane2000,
1469     author = {C. Kane and J. E. Marsden and M. Ortiz and M. West},
1470     title = {Variational integrators and the Newmark algorithm for conservative
1471     and dissipative mechanical systems},
1472     journal = {International Journal for Numerical Methods in Engineering},
1473     year = {2000},
1474     volume = {49},
1475     pages = {1295-1325},
1476     number = {10},
1477     month = {Dec 10},
1478     abstract = {The purpose of this work is twofold. First, we demonstrate analytically
1479     that the classical Newmark family as well as related integration
1480     algorithms are variational in the sense of the Veselov formulation
1481     of discrete mechanics. Such variational algorithms are well known
1482     to be symplectic and momentum preserving and to often have excellent
1483     global energy behaviour. This analytical result is verified through
1484     numerical examples and is believed to be one of the primary reasons
1485     that this class of algorithms performs so well. Second, we develop
1486     algorithms for mechanical systems with forcing, and in particular,
1487     for dissipative systems. In this case, we develop integrators that
1488     are based on a discretization of the Lagrange d'Alembert principle
1489     as well as on a variational formulation of dissipation. It is demonstrated
1490     that these types of structured integrators have good numerical behaviour
1491     in terms of obtaining the correct amounts by which the energy changes
1492     over the integration run. Copyright (C) 2000 John Wiley & Sons,
1493     Ltd.},
1494     annote = {373CJ Times Cited:30 Cited References Count:41},
1495     issn = {0029-5981},
1496     uri = {<Go to ISI>://000165270600004},
1497     }
1498    
1499 tim 2786 @ARTICLE{Klimov1997,
1500     author = {D. K. Klimov and D. Thirumalai},
1501     title = {Viscosity dependence of the folding rates of proteins},
1502     journal = {Physical Review Letters},
1503     year = {1997},
1504     volume = {79},
1505     pages = {317-320},
1506     number = {2},
1507     month = {Jul 14},
1508     abstract = {The viscosity (eta) dependence of the folding rates for four sequences
1509     (the native state of three sequences is a beta sheet, while the
1510     fourth forms an alpha helix) is calculated for off-lattice models
1511     of proteins. Assuming that the dynamics is given by the Langevin
1512     equation, we show that the folding rates increase linearly at low
1513     viscosities eta, decrease as 1/eta at large eta, and have a maximum
1514     at intermediate values. The Kramers' theory of barrier crossing
1515     provides a quantitative fit of the numerical results. By mapping
1516     the simulation results to real proteins we estimate that for optimized
1517     sequences the time scale for forming a four turn alpha-helix topology
1518     is about 500 ns, whereas for beta sheet it is about 10 mu s.},
1519     annote = {Xk293 Times Cited:77 Cited References Count:17},
1520     issn = {0031-9007},
1521     uri = {<Go to ISI>://A1997XK29300035},
1522 tim 2685 }
1523    
1524 tim 2789 @ARTICLE{Kol1997,
1525     author = {A. Kol and B. B. Laird and B. J. Leimkuhler},
1526     title = {A symplectic method for rigid-body molecular simulation},
1527     journal = {Journal of Chemical Physics},
1528     year = {1997},
1529     volume = {107},
1530     pages = {2580-2588},
1531     number = {7},
1532     month = {Aug 15},
1533     abstract = {Rigid-body molecular dynamics simulations typically are performed
1534     in a quaternion representation. The nonseparable form of the Hamiltonian
1535     in quaternions prevents the use of a standard leapfrog (Verlet)
1536     integrator, so nonsymplectic Runge-Kutta, multistep, or extrapolation
1537     methods are generally used, This is unfortunate since symplectic
1538     methods like Verlet exhibit superior energy conservation in long-time
1539     integrations. In this article, we describe an alternative method,
1540     which we call RSHAKE (for rotation-SHAKE), in which the entire rotation
1541     matrix is evolved (using the scheme of McLachlan and Scovel [J.
1542     Nonlin. Sci, 16 233 (1995)]) in tandem with the particle positions.
1543     We employ a fast approximate Newton solver to preserve the orthogonality
1544     of the rotation matrix. We test our method on a system of soft-sphere
1545     dipoles and compare with quaternion evolution using a 4th-order
1546     predictor-corrector integrator, Although the short-time error of
1547     the quaternion algorithm is smaller for fixed time step than that
1548     for RSHAKE, the quaternion scheme exhibits an energy drift which
1549     is not observed in simulations with RSHAKE, hence a fixed energy
1550     tolerance can be achieved by using a larger time step, The superiority
1551     of RSHAKE increases with system size. (C) 1997 American Institute
1552     of Physics.},
1553     annote = {Xq332 Times Cited:11 Cited References Count:18},
1554     issn = {0021-9606},
1555     uri = {<Go to ISI>://A1997XQ33200046},
1556     }
1557    
1558 tim 2786 @ARTICLE{Lansac2001,
1559     author = {Y. Lansac and M. A. Glaser and N. A. Clark},
1560     title = {Microscopic structure and dynamics of a partial bilayer smectic liquid
1561     crystal},
1562     journal = {Physical Review E},
1563     year = {2001},
1564     volume = {6405},
1565     pages = {-},
1566     number = {5},
1567     month = {Nov},
1568     abstract = {Cyanobiphenyls (nCB's) represent a useful and intensively studied
1569     class of mesogens. Many of the peculiar properties of nCB's (e.g.,
1570     the occurence of the partial bilayer smectic-A(d) phase) are thought
1571     to be a manifestation of short-range antiparallel association of
1572     neighboring molecules, resulting from strong dipole-dipole interactions
1573     between cyano groups. To test and extend existing models of microscopic
1574     ordering in nCB's, we carry out large-scale atomistic simulation
1575     studies of the microscopic structure and dynamics of the Sm-A(d)
1576     phase of 4-octyl-4'-cyanobiphenyl (8CB). We compute a variety of
1577     thermodynamic, structural, and dynamical properties for this material,
1578     and make a detailed comparison of our results with experimental
1579     measurements in order to validate our molecular model. Semiquantitative
1580     agreement with experiment is found: the smectic layer spacing and
1581     mass density are well reproduced, translational diffusion constants
1582     are similar to experiment, but the orientational ordering of alkyl
1583     chains is overestimated. This simulation provides a detailed picture
1584     of molecular conformation, smectic layer structure, and intermolecular
1585     correlations in Sm-A(d) 8CB, and demonstrates that pronounced short-range
1586     antiparallel association of molecules arising from dipole-dipole
1587     interactions plays a dominant role in determining the molecular-scale
1588     structure of 8CB.},
1589     annote = {Part 1 496QF Times Cited:10 Cited References Count:60},
1590     issn = {1063-651X},
1591     uri = {<Go to ISI>://000172406900063},
1592 tim 2685 }
1593    
1594 tim 2786 @ARTICLE{Lansac2003,
1595     author = {Y. Lansac and P. K. Maiti and N. A. Clark and M. A. Glaser},
1596     title = {Phase behavior of bent-core molecules},
1597     journal = {Physical Review E},
1598     year = {2003},
1599     volume = {67},
1600     pages = {-},
1601     number = {1},
1602     month = {Jan},
1603     abstract = {Recently, a new class of smectic liquid crystal phases characterized
1604     by the spontaneous formation of macroscopic chiral domains from
1605     achiral bent-core molecules has been discovered. We have carried
1606     out Monte Carlo simulations of a minimal hard spherocylinder dimer
1607     model to investigate the role of excluded volume interactions in
1608     determining the phase behavior of bent-core materials and to probe
1609     the molecular origins of polar and chiral symmetry breaking. We
1610     present the phase diagram of hard spherocylinder dimers of length-diameter
1611     ratio of 5 as a function of pressure or density and dimer opening
1612     angle psi. With decreasing psi, a transition from a nonpolar to
1613     a polar smectic A phase is observed near psi=167degrees, and the
1614     nematic phase becomes thermodynamically unstable for psi<135degrees.
1615     Free energy calculations indicate that the antipolar smectic A (SmAP(A))
1616     phase is more stable than the polar smectic A phase (SmAP(F)). No
1617     chiral smectic or biaxial nematic phases were found.},
1618     annote = {Part 1 646CM Times Cited:15 Cited References Count:38},
1619     issn = {1063-651X},
1620     uri = {<Go to ISI>://000181017300042},
1621 tim 2685 }
1622    
1623 tim 2786 @BOOK{Leach2001,
1624     title = {Molecular Modeling: Principles and Applications},
1625     publisher = {Pearson Educated Limited},
1626     year = {2001},
1627     author = {A. Leach},
1628     address = {Harlow, England},
1629     edition = {2nd},
1630 tim 2685 }
1631    
1632 tim 2789 @ARTICLE{Leimkuhler1999,
1633     author = {B. Leimkuhler},
1634     title = {Reversible adaptive regularization: perturbed Kepler motion and classical
1635     atomic trajectories},
1636     journal = {Philosophical Transactions of the Royal Society of London Series
1637     a-Mathematical Physical and Engineering Sciences},
1638     year = {1999},
1639     volume = {357},
1640     pages = {1101-1133},
1641     number = {1754},
1642     month = {Apr 15},
1643     abstract = {Reversible and adaptive integration methods based on Kustaanheimo-Stiefel
1644     regularization and modified Sundman transformations are applied
1645     to simulate general perturbed Kepler motion and to compute classical
1646     trajectories of atomic systems (e.g. Rydberg atoms). The new family
1647     of reversible adaptive regularization methods also conserves angular
1648     momentum and exhibits superior energy conservation and numerical
1649     stability in long-time integrations. The schemes are appropriate
1650     for scattering, for astronomical calculations of escape time and
1651     long-term stability, and for classical and semiclassical studies
1652     of atomic dynamics. The components of an algorithm for trajectory
1653     calculations are described. Numerical experiments illustrate the
1654     effectiveness of the reversible approach.},
1655     annote = {199EE Times Cited:11 Cited References Count:48},
1656     issn = {1364-503X},
1657     uri = {<Go to ISI>://000080466800007},
1658     }
1659    
1660 tim 2786 @BOOK{Leimkuhler2004,
1661     title = {Simulating Hamiltonian Dynamics},
1662     publisher = {Cambridge University Press},
1663     year = {2004},
1664     author = {B. Leimkuhler and S. Reich},
1665     address = {Cambridge},
1666 tim 2685 }
1667    
1668 tim 2786 @ARTICLE{Levelut1981,
1669     author = {A. M. Levelut and R. J. Tarento and F. Hardouin and M. F. Achard
1670     and G. Sigaud},
1671     title = {Number of Sa Phases},
1672     journal = {Physical Review A},
1673     year = {1981},
1674     volume = {24},
1675     pages = {2180-2186},
1676     number = {4},
1677     annote = {Ml751 Times Cited:96 Cited References Count:16},
1678     issn = {1050-2947},
1679     uri = {<Go to ISI>://A1981ML75100057},
1680 tim 2685 }
1681    
1682 tim 2786 @ARTICLE{Lieb1982,
1683     author = {W. R. Lieb and M. Kovalycsik and R. Mendelsohn},
1684     title = {Do Clinical-Levels of General-Anesthetics Affect Lipid Bilayers -
1685     Evidence from Raman-Scattering},
1686     journal = {Biochimica Et Biophysica Acta},
1687     year = {1982},
1688     volume = {688},
1689     pages = {388-398},
1690     number = {2},
1691     annote = {Nu461 Times Cited:40 Cited References Count:28},
1692     issn = {0006-3002},
1693     uri = {<Go to ISI>://A1982NU46100012},
1694 tim 2685 }
1695    
1696 tim 2786 @ARTICLE{Link1997,
1697     author = {D. R. Link and G. Natale and R. Shao and J. E. Maclennan and N. A.
1698     Clark and E. Korblova and D. M. Walba},
1699     title = {Spontaneous formation of macroscopic chiral domains in a fluid smectic
1700     phase of achiral molecules},
1701     journal = {Science},
1702     year = {1997},
1703     volume = {278},
1704     pages = {1924-1927},
1705     number = {5345},
1706     month = {Dec 12},
1707     abstract = {A smectic liquid-crystal phase made from achiral molecules with bent
1708     cores was found to have fluid layers that exhibit two spontaneous
1709     symmetry-breaking instabilities: polar molecular orientational ordering
1710     about the layer normal and molecular tilt. These instabilities combine
1711     to form a chiral layer structure with a handedness that depends
1712     on the sign of the tilt. The bulk states are either antiferroelectric-racemic,
1713     with the layer polar direction and handedness alternating in sign
1714     from layer to layer, or antiferroelectric-chiral, which is of uniform
1715     layer handedness. Both states exhibit an electric field-induced
1716     transition from antiferroelectric to ferroelectric.},
1717     annote = {Yl002 Times Cited:407 Cited References Count:25},
1718     issn = {0036-8075},
1719     uri = {<Go to ISI>://A1997YL00200028},
1720 tim 2685 }
1721    
1722 tim 2786 @ARTICLE{Liwo2005,
1723     author = {A. Liwo and M. Khalili and H. A. Scheraga},
1724     title = {Ab initio simulations of protein folding pathways by molecular dynamics
1725     with the united-residue (UNRES) model of polypeptide chains},
1726     journal = {Febs Journal},
1727     year = {2005},
1728     volume = {272},
1729     pages = {359-360},
1730     month = {Jul},
1731     annote = {Suppl. 1 005MG Times Cited:0 Cited References Count:0},
1732     issn = {1742-464X},
1733     uri = {<Go to ISI>://000234826102043},
1734 tim 2685 }
1735    
1736 tim 2789 @ARTICLE{Luty1994,
1737     author = {B. A. Luty and M. E. Davis and I. G. Tironi and W. F. Vangunsteren},
1738     title = {A Comparison of Particle-Particle, Particle-Mesh and Ewald Methods
1739     for Calculating Electrostatic Interactions in Periodic Molecular-Systems},
1740     journal = {Molecular Simulation},
1741     year = {1994},
1742     volume = {14},
1743     pages = {11-20},
1744     number = {1},
1745     abstract = {We compare the Particle-Particle Particle-Mesh (PPPM) and Ewald methods
1746     for calculating electrostatic interactions in periodic molecular
1747     systems. A brief comparison of the theories shows that the methods
1748     are very similar differing mainly in the technique which is used
1749     to perform the ''k-space'' or mesh calculation. Because the PPPM
1750     utilizes the highly efficient numerical Fast Fourier Transform (FFT)
1751     method it requires significantly less computational effort than
1752     the Ewald method and scale's almost linearly with system size.},
1753     annote = {Qf464 Times Cited:50 Cited References Count:20},
1754     issn = {0892-7022},
1755     uri = {<Go to ISI>://A1994QF46400002},
1756     }
1757    
1758 tim 2786 @BOOK{Marion1990,
1759     title = {Classical Dynamics of Particles and Systems},
1760     publisher = {Academic Press},
1761     year = {1990},
1762     author = {J.~B. Marion},
1763     address = {New York},
1764     edition = {2rd},
1765 tim 2685 }
1766    
1767 tim 2789 @ARTICLE{Marsden1998,
1768     author = {J. E. Marsden and G. W. Patrick and S. Shkoller},
1769     title = {Multisymplectic geometry, variational integrators, and nonlinear
1770     PDEs},
1771     journal = {Communications in Mathematical Physics},
1772     year = {1998},
1773     volume = {199},
1774     pages = {351-395},
1775     number = {2},
1776     month = {Dec},
1777     abstract = {This paper presents a geometric-variational approach to continuous
1778     and discrete mechanics and field theories. Using multisymplectic
1779     geometry, we show that the existence of the fundamental geometric
1780     structures as well as their preservation along solutions can be
1781     obtained directly from the variational principle. In particular,
1782     we prove that a unique multisymplectic structure is obtained by
1783     taking the derivative of an action function, and use this structure
1784     to prove covariant generalizations of conservation of symplecticity
1785     and Noether's theorem. Natural discretization schemes for PDEs,
1786     which have these important preservation properties, then follow
1787     by choosing a discrete action functional. In the case of mechanics,
1788     we recover the variational symplectic integrators of Veselov type,
1789     while for PDEs we obtain covariant spacetime integrators which conserve
1790     the corresponding discrete multisymplectic form as well as the discrete
1791     momentum mappings corresponding to symmetries. We show that the
1792     usual notion of symplecticity along an infinite-dimensional space
1793     of fields can be naturally obtained by making a spacetime split.
1794     All of the aspects of our method are demonstrated with a nonlinear
1795     sine-Gordon equation, including computational results and a comparison
1796     with other discretization schemes.},
1797     annote = {154RH Times Cited:88 Cited References Count:36},
1798     issn = {0010-3616},
1799     uri = {<Go to ISI>://000077902200006},
1800     }
1801    
1802 tim 2786 @ARTICLE{McLachlan1993,
1803     author = {R.~I McLachlan},
1804     title = {Explicit Lie-Poisson integration and the Euler equations},
1805     journal = {prl},
1806     year = {1993},
1807     volume = {71},
1808     pages = {3043-3046},
1809 tim 2685 }
1810    
1811 tim 2789 @ARTICLE{McLachlan1998a,
1812     author = {R. I. McLachlan and G. R. W. Quispel},
1813     title = {Generating functions for dynamical systems with symmetries, integrals,
1814     and differential invariants},
1815     journal = {Physica D},
1816     year = {1998},
1817     volume = {112},
1818     pages = {298-309},
1819     number = {1-2},
1820     month = {Jan 15},
1821     abstract = {We give a survey and some new examples of generating functions for
1822     systems with symplectic structure, systems with a first integral,
1823     systems that preserve volume, and systems with symmetries and/or
1824     time-reversing symmetries. Both ODEs and maps are treated, and we
1825     discuss how generating functions may be used in the structure-preserving
1826     numerical integration of ODEs with the above properties.},
1827     annote = {Yt049 Times Cited:7 Cited References Count:26},
1828     issn = {0167-2789},
1829     uri = {<Go to ISI>://000071558900021},
1830     }
1831    
1832     @ARTICLE{McLachlan1998,
1833     author = {R. I. McLachlan and G. R. W. Quispel and G. S. Turner},
1834     title = {Numerical integrators that preserve symmetries and reversing symmetries},
1835     journal = {Siam Journal on Numerical Analysis},
1836     year = {1998},
1837     volume = {35},
1838     pages = {586-599},
1839     number = {2},
1840     month = {Apr},
1841     abstract = {We consider properties of flows, the relationships between them, and
1842     whether numerical integrators can be made to preserve these properties.
1843     This is done in the context of automorphisms and antiautomorphisms
1844     of a certain group generated by maps associated to vector fields.
1845     This new framework unifies several known constructions. We also
1846     use the concept of #covariance# of a numerical method with respect
1847     to a group of coordinate transformations. The main application is
1848     to explore the relationship between spatial symmetries, reversing
1849     symmetries, and time symmetry of flows and numerical integrators.},
1850     annote = {Zc449 Times Cited:14 Cited References Count:33},
1851     issn = {0036-1429},
1852     uri = {<Go to ISI>://000072580500010},
1853     }
1854    
1855 tim 2786 @ARTICLE{McLachlan2005,
1856     author = {R. I. McLachlan and A. Zanna},
1857     title = {The discrete Moser-Veselov algorithm for the free rigid body, revisited},
1858     journal = {Foundations of Computational Mathematics},
1859     year = {2005},
1860     volume = {5},
1861     pages = {87-123},
1862     number = {1},
1863     month = {Feb},
1864     abstract = {In this paper we revisit the Moser-Veselov description of the free
1865     rigid body in body coordinates, which, in the 3 x 3 case, can be
1866     implemented as an explicit, second-order, integrable approximation
1867     of the continuous solution. By backward error analysis, we study
1868     the modified vector field which is integrated exactly by the discrete
1869     algorithm. We deduce that the discrete Moser-Veselov (DMV) is well
1870     approximated to higher order by time reparametrizations of the continuous
1871     equations (modified vector field). We use the modified vector field
1872     to scale the initial data of the DMV to improve the order of the
1873     approximation and show the equivalence of the DMV and the RATTLE
1874     algorithm. Numerical integration with these preprocessed initial
1875     data is several orders of magnitude more accurate than the original
1876     DMV and RATTLE approach.},
1877     annote = {911NS Times Cited:0 Cited References Count:14},
1878     issn = {1615-3375},
1879     uri = {<Go to ISI>://000228011900003},
1880 tim 2685 }
1881    
1882 tim 2786 @ARTICLE{Memmer2002,
1883     author = {R. Memmer},
1884     title = {Liquid crystal phases of achiral banana-shaped molecules: a computer
1885     simulation study},
1886     journal = {Liquid Crystals},
1887     year = {2002},
1888     volume = {29},
1889     pages = {483-496},
1890     number = {4},
1891     month = {Apr},
1892     abstract = {The phase behaviour of achiral banana-shaped molecules was studied
1893     by computer simulation. The banana-shaped molecules were described
1894     by model intermolecular interactions based on the Gay-Berne potential.
1895     The characteristic molecular structure was considered by joining
1896     two calamitic Gay-Berne particles through a bond to form a biaxial
1897     molecule of point symmetry group C-2v with a suitable bending angle.
1898     The dependence on temperature of systems of N=1024 rigid banana-shaped
1899     molecules with bending angle phi=140degrees has been studied by
1900     means of Monte Carlo simulations in the isobaric-isothermal ensemble
1901     (NpT). On cooling an isotropic system, two phase transitions characterized
1902     by phase transition enthalpy, entropy and relative volume change
1903     have been observed. For the first time by computer simulation of
1904     a many-particle system of banana-shaped molecules, at low temperature
1905     an untilted smectic phase showing a global phase biaxiality and
1906     a spontaneous local polarization in the layers, i.e. a local polar
1907     arrangement of the steric dipoles, with an antiferroelectric-like
1908     superstructure could be proven, a phase structure which recently
1909     has been discovered experimentally. Additionally, at intermediate
1910     temperature a nematic-like phase has been proved, whereas close
1911     to the transition to the smectic phase hints of a spontaneous achiral
1912     symmetry breaking have been determined. Here, in the absence of
1913     a layered structure a helical superstructure has been formed. All
1914     phases have been characterized by visual representations of selected
1915     configurations, scalar and pseudoscalar correlation functions, and
1916     order parameters.},
1917     annote = {531HT Times Cited:12 Cited References Count:37},
1918     issn = {0267-8292},
1919     uri = {<Go to ISI>://000174410500001},
1920 tim 2685 }
1921    
1922 tim 2786 @ARTICLE{Metropolis1949,
1923     author = {N. Metropolis and S. Ulam},
1924     title = {The $\mbox{Monte Carlo}$ Method},
1925     journal = {J. Am. Stat. Ass.},
1926     year = {1949},
1927     volume = {44},
1928     pages = {335-341},
1929 tim 2685 }
1930    
1931 tim 2786 @ARTICLE{Mielke2004,
1932     author = {S. P. Mielke and W. H. Fink and V. V. Krishnan and N. Gronbech-Jensen
1933     and C. J. Benham},
1934     title = {Transcription-driven twin supercoiling of a DNA loop: A Brownian
1935     dynamics study},
1936     journal = {Journal of Chemical Physics},
1937     year = {2004},
1938     volume = {121},
1939     pages = {8104-8112},
1940     number = {16},
1941     month = {Oct 22},
1942     abstract = {The torque generated by RNA polymerase as it tracks along double-stranded
1943     DNA can potentially induce long-range structural deformations integral
1944     to mechanisms of biological significance in both prokaryotes and
1945     eukaryotes. In this paper, we introduce a dynamic computer model
1946     for investigating this phenomenon. Duplex DNA is represented as
1947     a chain of hydrodynamic beads interacting through potentials of
1948     linearly elastic stretching, bending, and twisting, as well as excluded
1949     volume. The chain, linear when relaxed, is looped to form two open
1950     but topologically constrained subdomains. This permits the dynamic
1951     introduction of torsional stress via a centrally applied torque.
1952     We simulate by Brownian dynamics the 100 mus response of a 477-base
1953     pair B-DNA template to the localized torque generated by the prokaryotic
1954     transcription ensemble. Following a sharp rise at early times, the
1955     distributed twist assumes a nearly constant value in both subdomains,
1956     and a succession of supercoiling deformations occurs as superhelical
1957     stress is increasingly partitioned to writhe. The magnitude of writhe
1958     surpasses that of twist before also leveling off when the structure
1959     reaches mechanical equilibrium with the torsional load. Superhelicity
1960     is simultaneously right handed in one subdomain and left handed
1961     in the other, as predicted by the #transcription-induced##twin-supercoiled-domain#
1962     model [L. F. Liu and J. C. Wang, Proc. Natl. Acad. Sci. U.S.A. 84,
1963     7024 (1987)]. The properties of the chain at the onset of writhing
1964     agree well with predictions from theory, and the generated stress
1965     is ample for driving secondary structural transitions in physiological
1966     DNA. (C) 2004 American Institute of Physics.},
1967     annote = {861ZF Times Cited:3 Cited References Count:34},
1968     issn = {0021-9606},
1969     uri = {<Go to ISI>://000224456500064},
1970 tim 2685 }
1971    
1972 tim 2786 @ARTICLE{Naess2001,
1973     author = {S. N. Naess and H. M. Adland and A. Mikkelsen and A. Elgsaeter},
1974     title = {Brownian dynamics simulation of rigid bodies and segmented polymer
1975     chains. Use of Cartesian rotation vectors as the generalized coordinates
1976     describing angular orientations},
1977     journal = {Physica A},
1978     year = {2001},
1979     volume = {294},
1980     pages = {323-339},
1981     number = {3-4},
1982     month = {May 15},
1983     abstract = {The three Eulerian angles constitute the classical choice of generalized
1984     coordinates used to describe the three degrees of rotational freedom
1985     of a rigid body, but it has long been known that this choice yields
1986     singular equations of motion. The latter is also true when Eulerian
1987     angles are used in Brownian dynamics analyses of the angular orientation
1988     of single rigid bodies and segmented polymer chains. Starting from
1989     kinetic theory we here show that by instead employing the three
1990     components of Cartesian rotation vectors as the generalized coordinates
1991     describing angular orientation, no singularity appears in the configuration
1992     space diffusion equation and the associated Brownian dynamics algorithm.
1993     The suitability of Cartesian rotation vectors in Brownian dynamics
1994     simulations of segmented polymer chains with spring-like or ball-socket
1995     joints is discussed. (C) 2001 Elsevier Science B.V. All rights reserved.},
1996     annote = {433TA Times Cited:7 Cited References Count:19},
1997     issn = {0378-4371},
1998     uri = {<Go to ISI>://000168774800005},
1999 tim 2685 }
2000    
2001 tim 2786 @ARTICLE{Niori1996,
2002     author = {T. Niori and T. Sekine and J. Watanabe and T. Furukawa and H. Takezoe},
2003     title = {Distinct ferroelectric smectic liquid crystals consisting of banana
2004     shaped achiral molecules},
2005     journal = {Journal of Materials Chemistry},
2006     year = {1996},
2007     volume = {6},
2008     pages = {1231-1233},
2009     number = {7},
2010     month = {Jul},
2011     abstract = {The synthesis of a banana-shaped molecule is reported and it is found
2012     that the smectic phase which it forms is biaxial with the molecules
2013     packed in the best,direction into a layer. Because of this characteristic
2014     packing, spontaneous polarization appears parallel to the layer
2015     and switches on reversal of an applied electric field. This is the
2016     first obvious example of ferroelectricity in an achiral smectic
2017     phase and is ascribed to the C-2v symmetry of the molecular packing.},
2018     annote = {Ux855 Times Cited:447 Cited References Count:18},
2019     issn = {0959-9428},
2020     uri = {<Go to ISI>://A1996UX85500025},
2021 tim 2685 }
2022    
2023 tim 2786 @ARTICLE{Noguchi2002,
2024     author = {H. Noguchi and M. Takasu},
2025     title = {Structural changes of pulled vesicles: A Brownian dynamics simulation},
2026     journal = {Physical Review E},
2027     year = {2002},
2028     volume = {65},
2029     pages = {-},
2030     number = {5},
2031     month = {may},
2032     abstract = {We Studied the structural changes of bilayer vesicles induced by mechanical
2033     forces using a Brownian dynamics simulation. Two nanoparticles,
2034     which interact repulsively with amphiphilic molecules, are put inside
2035     a vesicle. The position of one nanoparticle is fixed, and the other
2036     is moved by a constant force as in optical-trapping experiments.
2037     First, the pulled vesicle stretches into a pear or tube shape. Then
2038     the inner monolayer in the tube-shaped region is deformed, and a
2039     cylindrical structure is formed between two vesicles. After stretching
2040     the cylindrical region, fission occurs near the moved vesicle. Soon
2041     after this the cylindrical region shrinks. The trapping force similar
2042     to 100 pN is needed to induce the formation of the cylindrical structure
2043     and fission.},
2044     annote = {Part 1 568PX Times Cited:5 Cited References Count:39},
2045     issn = {1063-651X},
2046     uri = {<Go to ISI>://000176552300084},
2047 tim 2685 }
2048    
2049 tim 2786 @ARTICLE{Noguchi2001,
2050     author = {H. Noguchi and M. Takasu},
2051     title = {Fusion pathways of vesicles: A Brownian dynamics simulation},
2052     journal = {Journal of Chemical Physics},
2053     year = {2001},
2054     volume = {115},
2055     pages = {9547-9551},
2056     number = {20},
2057     month = {Nov 22},
2058     abstract = {We studied the fusion dynamics of vesicles using a Brownian dynamics
2059     simulation. Amphiphilic molecules spontaneously form vesicles with
2060     a bilayer structure. Two vesicles come into contact and form a stalk
2061     intermediate, in which a necklike structure only connects the outer
2062     monolayers, as predicted by the stalk hypothesis. We have found
2063     a new pathway of pore opening from stalks at high temperature: the
2064     elliptic stalk bends and contact between the ends of the arc-shaped
2065     stalk leads to pore opening. On the other hand, we have clarified
2066     that the pore-opening process at low temperature agrees with the
2067     modified stalk model: a pore is induced by contact between the inner
2068     monolayers inside the stalk. (C) 2001 American Institute of Physics.},
2069     annote = {491UW Times Cited:48 Cited References Count:25},
2070     issn = {0021-9606},
2071     uri = {<Go to ISI>://000172129300049},
2072 tim 2685 }
2073    
2074 tim 2789 @BOOK{Olver1986,
2075     title = {Applications of Lie groups to differential equatitons},
2076     publisher = {Springer},
2077     year = {1986},
2078     author = {P.J. Olver},
2079     address = {New York},
2080     }
2081    
2082     @ARTICLE{Omelyan1998,
2083     author = {I. P. Omelyan},
2084     title = {On the numerical integration of motion for rigid polyatomics: The
2085     modified quaternion approach},
2086     journal = {Computers in Physics},
2087     year = {1998},
2088     volume = {12},
2089     pages = {97-103},
2090     number = {1},
2091     month = {Jan-Feb},
2092     abstract = {A revised version of the quaternion approach for numerical integration
2093     of the equations of motion for rigid polyatomic molecules is proposed.
2094     The modified approach is based on a formulation of the quaternion
2095     dynamics with constraints. This allows one to resolve the rigidity
2096     problem rigorously using constraint forces. It is shown that the
2097     procedure for preservation of molecular rigidity can be realized
2098     particularly simply within the Verlet algorithm in velocity form.
2099     We demonstrate that the method presented leads to an improved numerical
2100     stability with respect to the usual quaternion rescaling scheme
2101     and it is roughly as good as the cumbersome atomic-constraint technique.
2102     (C) 1998 American Institute of Physics.},
2103     annote = {Yx279 Times Cited:12 Cited References Count:28},
2104     issn = {0894-1866},
2105     uri = {<Go to ISI>://000072024300025},
2106     }
2107    
2108     @ARTICLE{Omelyan1998a,
2109     author = {I. P. Omelyan},
2110     title = {Algorithm for numerical integration of the rigid-body equations of
2111     motion},
2112     journal = {Physical Review E},
2113     year = {1998},
2114     volume = {58},
2115     pages = {1169-1172},
2116     number = {1},
2117     month = {Jul},
2118     abstract = {An algorithm for numerical integration of the rigid-body equations
2119     of motion is proposed. The algorithm uses the leapfrog scheme and
2120     the quantities involved are angular velocities and orientational
2121     variables that can be expressed in terms of either principal axes
2122     or quaternions. Due to specific features of the algorithm, orthonormality
2123     and unit norms of the orientational variables are integrals of motion,
2124     despite an approximate character of the produced trajectories. It
2125     is shown that the method presented appears to be the most efficient
2126     among all such algorithms known.},
2127     annote = {101XL Times Cited:8 Cited References Count:22},
2128     issn = {1063-651X},
2129     uri = {<Go to ISI>://000074893400151},
2130     }
2131    
2132 tim 2786 @ARTICLE{Orlandi2006,
2133     author = {S. Orlandi and R. Berardi and J. Steltzer and C. Zannoni},
2134     title = {A Monte Carlo study of the mesophases formed by polar bent-shaped
2135     molecules},
2136     journal = {Journal of Chemical Physics},
2137     year = {2006},
2138     volume = {124},
2139     pages = {-},
2140     number = {12},
2141     month = {Mar 28},
2142     abstract = {Liquid crystal phases formed by bent-shaped (or #banana#) molecules
2143     are currently of great interest. Here we investigate by Monte Carlo
2144     computer simulations the phases formed by rigid banana molecules
2145     modeled combining three Gay-Berne sites and containing either one
2146     central or two lateral and transversal dipoles. We show that changing
2147     the dipole position and orientation has a profound effect on the
2148     mesophase stability and molecular organization. In particular, we
2149     find a uniaxial nematic phase only for off-center dipolar models
2150     and tilted phases only for the one with terminal dipoles. (c) 2006
2151     American Institute of Physics.},
2152     annote = {028CP Times Cited:0 Cited References Count:42},
2153     issn = {0021-9606},
2154     uri = {<Go to ISI>://000236464000072},
2155 tim 2685 }
2156    
2157 tim 2789 @ARTICLE{Owren1992,
2158     author = {B. Owren and M. Zennaro},
2159     title = {Derivation of Efficient, Continuous, Explicit Runge-Kutta Methods},
2160     journal = {Siam Journal on Scientific and Statistical Computing},
2161     year = {1992},
2162     volume = {13},
2163     pages = {1488-1501},
2164     number = {6},
2165     month = {Nov},
2166     abstract = {Continuous, explicit Runge-Kutta methods with the minimal number of
2167     stages are considered. These methods are continuously differentiable
2168     if and only if one of the stages is the FSAL evaluation. A characterization
2169     of a subclass of these methods is developed for orders 3, 4, and
2170     5. It is shown how the free parameters of these methods can be used
2171     either to minimize the continuous truncation error coefficients
2172     or to maximize the stability region. As a representative for these
2173     methods the fifth-order method with minimized error coefficients
2174     is chosen, supplied with an error estimation method, and analysed
2175     by using the DETEST software. The results are compared with a similar
2176     implementation of the Dormand-Prince 5(4) pair with interpolant,
2177     showing a significant advantage in the new method for the chosen
2178     problems.},
2179     annote = {Ju936 Times Cited:25 Cited References Count:20},
2180     issn = {0196-5204},
2181     uri = {<Go to ISI>://A1992JU93600013},
2182     }
2183    
2184 tim 2786 @ARTICLE{Palacios1998,
2185     author = {J. L. Garcia-Palacios and F. J. Lazaro},
2186     title = {Langevin-dynamics study of the dynamical properties of small magnetic
2187     particles},
2188     journal = {Physical Review B},
2189     year = {1998},
2190     volume = {58},
2191     pages = {14937-14958},
2192     number = {22},
2193     month = {Dec 1},
2194     abstract = {The stochastic Landau-Lifshitz-Gilbert equation of motion for a classical
2195     magnetic moment is numerically solved (properly observing the customary
2196     interpretation of it as a Stratonovich stochastic differential equation),
2197     in order to study the dynamics of magnetic nanoparticles. The corresponding
2198     Langevin-dynamics approach allows for the study of the fluctuating
2199     trajectories of individual magnetic moments, where we have encountered
2200     remarkable phenomena in the overbarrier rotation process, such as
2201     crossing-back or multiple crossing of the potential barrier, rooted
2202     in the gyromagnetic nature of the system. Concerning averaged quantities,
2203     we study the linear dynamic response of the archetypal ensemble
2204     of noninteracting classical magnetic moments with axially symmetric
2205     magnetic anisotropy. The results are compared with different analytical
2206     expressions used to model the relaxation of nanoparticle ensembles,
2207     assessing their accuracy. It has been found that, among a number
2208     of heuristic expressions for the linear dynamic susceptibility,
2209     only the simple formula proposed by Shliomis and Stepanov matches
2210     the coarse features of the susceptibility reasonably. By comparing
2211     the numerical results with the asymptotic formula of Storonkin {Sov.
2212     Phys. Crystallogr. 30, 489 (1985) [Kristallografiya 30, 841 (1985)]},
2213     the effects of the intra-potential-well relaxation modes on the
2214     low-temperature longitudinal dynamic response have been assessed,
2215     showing their relatively small reflection in the susceptibility
2216     curves but their dramatic influence on the phase shifts. Comparison
2217     of the numerical results with the exact zero-damping expression
2218     for the transverse susceptibility by Garanin, Ishchenko, and Panina
2219     {Theor. Math. Phys. (USSR) 82, 169 (1990) [Teor. Mat. Fit. 82, 242
2220     (1990)]}, reveals a sizable contribution of the spread of the precession
2221     frequencies of the magnetic moment in the anisotropy field to the
2222     dynamic response at intermediate-to-high temperatures. [S0163-1829
2223     (98)00446-9].},
2224     annote = {146XW Times Cited:66 Cited References Count:45},
2225     issn = {0163-1829},
2226     uri = {<Go to ISI>://000077460000052},
2227 tim 2685 }
2228    
2229 tim 2786 @ARTICLE{Pastor1988,
2230     author = {R. W. Pastor and B. R. Brooks and A. Szabo},
2231     title = {An Analysis of the Accuracy of Langevin and Molecular-Dynamics Algorithms},
2232     journal = {Molecular Physics},
2233     year = {1988},
2234     volume = {65},
2235     pages = {1409-1419},
2236     number = {6},
2237     month = {Dec 20},
2238     annote = {T1302 Times Cited:61 Cited References Count:26},
2239     issn = {0026-8976},
2240     uri = {<Go to ISI>://A1988T130200011},
2241 tim 2685 }
2242    
2243 tim 2786 @ARTICLE{Pelzl1999,
2244     author = {G. Pelzl and S. Diele and W. Weissflog},
2245     title = {Banana-shaped compounds - A new field of liquid crystals},
2246     journal = {Advanced Materials},
2247     year = {1999},
2248     volume = {11},
2249     pages = {707-724},
2250     number = {9},
2251     month = {Jul 5},
2252     annote = {220RC Times Cited:313 Cited References Count:49},
2253     issn = {0935-9648},
2254     uri = {<Go to ISI>://000081680400007},
2255 tim 2685 }
2256    
2257 tim 2786 @ARTICLE{Perram1985,
2258     author = {J. W. Perram and M. S. Wertheim},
2259     title = {Statistical-Mechanics of Hard Ellipsoids .1. Overlap Algorithm and
2260     the Contact Function},
2261     journal = {Journal of Computational Physics},
2262     year = {1985},
2263     volume = {58},
2264     pages = {409-416},
2265     number = {3},
2266     annote = {Akb93 Times Cited:71 Cited References Count:12},
2267     issn = {0021-9991},
2268     uri = {<Go to ISI>://A1985AKB9300008},
2269 tim 2685 }
2270    
2271 tim 2789 @ARTICLE{Rotne1969,
2272     author = {F. Perrin},
2273     title = {Variational treatment of hydrodynamic interaction in polymers},
2274     journal = {J. Chem. Phys.},
2275     year = {1969},
2276     volume = {50},
2277     pages = {4831¨C4837},
2278     }
2279    
2280     @ARTICLE{Perrin1936,
2281     author = {F. Perrin},
2282     title = {Mouvement brownien d'un ellipsoid(II). Rotation libre et depolarisation
2283     des fluorescences. Translation et diffusion de moleculese ellipsoidales},
2284     journal = {J. Phys. Radium},
2285     year = {1936},
2286     volume = {7},
2287     pages = {1-11},
2288     }
2289    
2290     @ARTICLE{Perrin1934,
2291     author = {F. Perrin},
2292     title = {Mouvement brownien d'un ellipsoid(I). Dispersion dielectrique pour
2293     des molecules ellipsoidales},
2294     journal = {J. Phys. Radium},
2295     year = {1934},
2296     volume = {5},
2297     pages = {497-511},
2298     }
2299    
2300 tim 2786 @ARTICLE{Petrache1998,
2301     author = {H. I. Petrache and S. Tristram-Nagle and J. F. Nagle},
2302     title = {Fluid phase structure of EPC and DMPC bilayers},
2303     journal = {Chemistry and Physics of Lipids},
2304     year = {1998},
2305     volume = {95},
2306     pages = {83-94},
2307     number = {1},
2308     month = {Sep},
2309     abstract = {X-ray diffraction data taken at high instrumental resolution were
2310     obtained for EPC and DMPC under various osmotic pressures, primarily
2311     at T = 30 degrees C. The headgroup thickness D-HH was obtained from
2312     relative electron density profiles. By using volumetric results
2313     and by comparing to gel phase DPPC we obtain areas A(EPC)(F) = 69.4
2314     +/- 1.1 Angstrom(2) and A(DMPC)(F) = 59.7 +/- 0.2 Angstrom(2). The
2315     analysis also gives estimates for the areal compressibility K-A.
2316     The A(F) results lead to other structural results regarding membrane
2317     thickness and associated waters. Using the recently determined absolute
2318     electrons density profile of DPPC, the AF results also lead to absolute
2319     electron density profiles and absolute continuous transforms \F(q)\
2320     for EPC and DMPC, Limited measurements of temperature dependence
2321     show directly that fluctuations increase with increasing temperature
2322     and that a small decrease in bending modulus K-c accounts for the
2323     increased water spacing reported by Simon et al. (1995) Biophys.
2324     J. 69, 1473-1483. (C) 1998 Elsevier Science Ireland Ltd. All rights
2325     reserved.},
2326     annote = {130AT Times Cited:98 Cited References Count:39},
2327     issn = {0009-3084},
2328     uri = {<Go to ISI>://000076497600007},
2329 tim 2685 }
2330    
2331 tim 2786 @ARTICLE{Powles1973,
2332     author = {J.~G. Powles},
2333     title = {A general ellipsoid can not always serve as a modle for the rotational
2334     diffusion properties of arbitrary shaped rigid molecules},
2335     journal = {Advan. Phys.},
2336     year = {1973},
2337     volume = {22},
2338     pages = {1-56},
2339 tim 2685 }
2340    
2341 tim 2786 @ARTICLE{Recio2004,
2342     author = {J. Fernandez-Recio and M. Totrov and R. Abagyan},
2343     title = {Identification of protein-protein interaction sites from docking
2344     energy landscapes},
2345     journal = {Journal of Molecular Biology},
2346     year = {2004},
2347     volume = {335},
2348     pages = {843-865},
2349     number = {3},
2350     month = {Jan 16},
2351     abstract = {Protein recognition is one of the most challenging and intriguing
2352     problems in structural biology. Despite all the available structural,
2353     sequence and biophysical information about protein-protein complexes,
2354     the physico-chemical patterns, if any, that make a protein surface
2355     likely to be involved in protein-protein interactions, remain elusive.
2356     Here, we apply protein docking simulations and analysis of the interaction
2357     energy landscapes to identify protein-protein interaction sites.
2358     The new protocol for global docking based on multi-start global
2359     energy optimization of an allatom model of the ligand, with detailed
2360     receptor potentials and atomic solvation parameters optimized in
2361     a training set of 24 complexes, explores the conformational space
2362     around the whole receptor without restrictions. The ensembles of
2363     the rigid-body docking solutions generated by the simulations were
2364     subsequently used to project the docking energy landscapes onto
2365     the protein surfaces. We found that highly populated low-energy
2366     regions consistently corresponded to actual binding sites. The procedure
2367     was validated on a test set of 21 known protein-protein complexes
2368     not used in the training set. As much as 81% of the predicted high-propensity
2369     patch residues were located correctly in the native interfaces.
2370     This approach can guide the design of mutations on the surfaces
2371     of proteins, provide geometrical details of a possible interaction,
2372     and help to annotate protein surfaces in structural proteomics.
2373     (C) 2003 Elsevier Ltd. All rights reserved.},
2374     annote = {763GQ Times Cited:21 Cited References Count:59},
2375     issn = {0022-2836},
2376     uri = {<Go to ISI>://000188066900016},
2377 tim 2685 }
2378    
2379 tim 2786 @ARTICLE{Reddy2006,
2380     author = {R. A. Reddy and C. Tschierske},
2381     title = {Bent-core liquid crystals: polar order, superstructural chirality
2382     and spontaneous desymmetrisation in soft matter systems},
2383     journal = {Journal of Materials Chemistry},
2384     year = {2006},
2385     volume = {16},
2386     pages = {907-961},
2387     number = {10},
2388     abstract = {An overview on the recent developments in the field of liquid crystalline
2389     bent-core molecules (so-called banana liquid crystals) is given.
2390     After some basic issues, dealing with general aspects of the systematisation
2391     of the mesophases, development of polar order and chirality in this
2392     class of LC systems and explaining some general structure-property
2393     relationships, we focus on fascinating new developments in this
2394     field, such as modulated, undulated and columnar phases, so-called
2395     B7 phases, phase biaxiality, ferroelectric and antiferroelectric
2396     polar order in smectic and columnar phases, amplification and switching
2397     of chirality and the spontaneous formation of superstructural and
2398     supramolecular chirality.},
2399     annote = {021NS Times Cited:2 Cited References Count:316},
2400     issn = {0959-9428},
2401     uri = {<Go to ISI>://000235990500001},
2402 tim 2685 }
2403    
2404 tim 2789 @ARTICLE{Reich1999,
2405     author = {S. Reich},
2406     title = {Backward error analysis for numerical integrators},
2407     journal = {Siam Journal on Numerical Analysis},
2408     year = {1999},
2409     volume = {36},
2410     pages = {1549-1570},
2411     number = {5},
2412     month = {Sep 8},
2413     abstract = {Backward error analysis has become an important tool for understanding
2414     the long time behavior of numerical integration methods. This is
2415     true in particular for the integration of Hamiltonian systems where
2416     backward error analysis can be used to show that a symplectic method
2417     will conserve energy over exponentially long periods of time. Such
2418     results are typically based on two aspects of backward error analysis:
2419     (i) It can be shown that the modified vector fields have some qualitative
2420     properties which they share with the given problem and (ii) an estimate
2421     is given for the difference between the best interpolating vector
2422     field and the numerical method. These aspects have been investigated
2423     recently, for example, by Benettin and Giorgilli in [J. Statist.
2424     Phys., 74 (1994), pp. 1117-1143], by Hairer in [Ann. Numer. Math.,
2425     1 (1994), pp. 107-132], and by Hairer and Lubich in [Numer. Math.,
2426     76 (1997), pp. 441-462]. In this paper we aim at providing a unifying
2427     framework and a simplification of the existing results and corresponding
2428     proofs. Our approach to backward error analysis is based on a simple
2429     recursive definition of the modified vector fields that does not
2430     require explicit Taylor series expansion of the numerical method
2431     and the corresponding flow maps as in the above-cited works. As
2432     an application we discuss the long time integration of chaotic Hamiltonian
2433     systems and the approximation of time averages along numerically
2434     computed trajectories.},
2435     annote = {237HV Times Cited:43 Cited References Count:41},
2436     issn = {0036-1429},
2437     uri = {<Go to ISI>://000082650600010},
2438     }
2439    
2440 tim 2786 @ARTICLE{Ros2005,
2441     author = {M. B. Ros and J. L. Serrano and M. R. {de la Fuente} and C. L. Folcia},
2442     title = {Banana-shaped liquid crystals: a new field to explore},
2443     journal = {Journal of Materials Chemistry},
2444     year = {2005},
2445     volume = {15},
2446     pages = {5093-5098},
2447     number = {48},
2448     abstract = {The recent literature in the field of liquid crystals shows that banana-shaped
2449     mesogenic materials represent a bewitching and stimulating field
2450     of research that is interesting both academically and in terms of
2451     applications. Numerous topics are open to investigation in this
2452     area because of the rich phenomenology and new possibilities that
2453     these materials offer. The principal concepts in this area are reviewed
2454     along with recent results. In addition, new directions to stimulate
2455     further research activities are highlighted.},
2456     annote = {990XA Times Cited:3 Cited References Count:72},
2457     issn = {0959-9428},
2458     uri = {<Go to ISI>://000233775500001},
2459 tim 2685 }
2460    
2461 tim 2786 @ARTICLE{Roy2005,
2462     author = {A. Roy and N. V. Madhusudana},
2463     title = {A frustrated packing model for the B-6-B-1-SmAP(A) sequence of phases
2464     in banana shaped molecules},
2465     journal = {European Physical Journal E},
2466     year = {2005},
2467     volume = {18},
2468     pages = {253-258},
2469     number = {3},
2470     month = {Nov},
2471     abstract = {A vast majority of compounds with bent core or banana shaped molecules
2472     exhibit the phase sequence B-6-B-1-B-2 as the chain length is increased
2473     in a homologous series. The B-6 phase has an intercalated fluid
2474     lamellar structure with a layer spacing of half the molecular length.
2475     The B-1 phase has a two dimensionally periodic rectangular columnar
2476     structure. The B-2 phase has a monolayer fluid lamellar structure
2477     with molecules tilted with respect to the layer normal. Neglecting
2478     the tilt order of the molecules in the B-2 phase, we have developed
2479     a frustrated packing model to describe this phase sequence qualitatively.
2480     The model has some analogy with that of the frustrated smectics
2481     exhibited by highly polar rod like molecules.},
2482     annote = {985FW Times Cited:0 Cited References Count:30},
2483     issn = {1292-8941},
2484     uri = {<Go to ISI>://000233363300002},
2485 tim 2685 }
2486    
2487 tim 2789 @ARTICLE{Ryckaert1977,
2488     author = {J. P. Ryckaert and G. Ciccotti and H. J. C. Berendsen},
2489     title = {Numerical-Integration of Cartesian Equations of Motion of a System
2490     with Constraints - Molecular-Dynamics of N-Alkanes},
2491     journal = {Journal of Computational Physics},
2492     year = {1977},
2493     volume = {23},
2494     pages = {327-341},
2495     number = {3},
2496     annote = {Cz253 Times Cited:3680 Cited References Count:7},
2497     issn = {0021-9991},
2498     uri = {<Go to ISI>://A1977CZ25300007},
2499     }
2500    
2501     @ARTICLE{Sagui1999,
2502     author = {C. Sagui and T. A. Darden},
2503     title = {Molecular dynamics simulations of biomolecules: Long-range electrostatic
2504     effects},
2505     journal = {Annual Review of Biophysics and Biomolecular Structure},
2506     year = {1999},
2507     volume = {28},
2508     pages = {155-179},
2509     abstract = {Current computer simulations of biomolecules typically make use of
2510     classical molecular dynamics methods, as a very large number (tens
2511     to hundreds of thousands) of atoms are involved over timescales
2512     of many nanoseconds. The methodology for treating short-range bonded
2513     and van der Waals interactions has matured. However, long-range
2514     electrostatic interactions still represent a bottleneck in simulations.
2515     In this article, we introduce the basic issues for an accurate representation
2516     of the relevant electrostatic interactions. In spite of the huge
2517     computational time demanded by most biomolecular systems, it is
2518     no longer necessary to resort to uncontrolled approximations such
2519     as the use of cutoffs. In particular, we discuss the Ewald summation
2520     methods, the fast particle mesh methods, and the fast multipole
2521     methods. We also review recent efforts to understand the role of
2522     boundary conditions in systems with long-range interactions, and
2523     conclude with a short perspective on future trends.},
2524     annote = {213KJ Times Cited:126 Cited References Count:73},
2525     issn = {1056-8700},
2526     uri = {<Go to ISI>://000081271400008},
2527     }
2528    
2529 tim 2786 @ARTICLE{Sandu1999,
2530     author = {A. Sandu and T. Schlick},
2531     title = {Masking resonance artifacts in force-splitting methods for biomolecular
2532     simulations by extrapolative Langevin dynamics},
2533     journal = {Journal of Computational Physics},
2534     year = {1999},
2535     volume = {151},
2536     pages = {74-113},
2537     number = {1},
2538     month = {May 1},
2539     abstract = {Numerical resonance artifacts have become recognized recently as a
2540     limiting factor to increasing the timestep in multiple-timestep
2541     (MTS) biomolecular dynamics simulations. At certain timesteps correlated
2542     to internal motions (e.g., 5 fs, around half the period of the fastest
2543     bond stretch, T-min), visible inaccuracies or instabilities can
2544     occur. Impulse-MTS schemes are vulnerable to these resonance errors
2545     since large energy pulses are introduced to the governing dynamics
2546     equations when the slow forces are evaluated. We recently showed
2547     that such resonance artifacts can be masked significantly by applying
2548     extrapolative splitting to stochastic dynamics. Theoretical and
2549     numerical analyses of force-splitting integrators based on the Verlet
2550     discretization are reported here for linear models to explain these
2551     observations and to suggest how to construct effective integrators
2552     for biomolecular dynamics that balance stability with accuracy.
2553     Analyses for Newtonian dynamics demonstrate the severe resonance
2554     patterns of the Impulse splitting, with this severity worsening
2555     with the outer timestep. Delta t: Constant Extrapolation is generally
2556     unstable, but the disturbances do not grow with Delta t. Thus. the
2557     stochastic extrapolative combination can counteract generic instabilities
2558     and largely alleviate resonances with a sufficiently strong Langevin
2559     heat-bath coupling (gamma), estimates for which are derived here
2560     based on the fastest and slowest motion periods. These resonance
2561     results generally hold for nonlinear test systems: a water tetramer
2562     and solvated protein. Proposed related approaches such as Extrapolation/Correction
2563     and Midpoint Extrapolation work better than Constant Extrapolation
2564     only for timesteps less than T-min/2. An effective extrapolative
2565     stochastic approach for biomolecules that balances long-timestep
2566     stability with good accuracy for the fast subsystem is then applied
2567     to a biomolecule using a three-class partitioning: the medium forces
2568     are treated by Midpoint Extrapolation via position Verlet, and the
2569     slow forces are incorporated by Constant Extrapolation. The resulting
2570     algorithm (LN) performs well on a solvated protein system in terms
2571     of thermodynamic properties and yields an order of magnitude speedup
2572     with respect to single-timestep Langevin trajectories. Computed
2573     spectral density functions also show how the Newtonian modes can
2574     be approximated by using a small gamma in the range Of 5-20 ps(-1).
2575     (C) 1999 Academic Press.},
2576     annote = {194FM Times Cited:14 Cited References Count:32},
2577     issn = {0021-9991},
2578     uri = {<Go to ISI>://000080181500004},
2579 tim 2685 }
2580    
2581 tim 2786 @ARTICLE{Satoh1996,
2582     author = {K. Satoh and S. Mita and S. Kondo},
2583     title = {Monte Carlo simulations using the dipolar Gay-Berne model: Effect
2584     of terminal dipole moment on mesophase formation},
2585     journal = {Chemical Physics Letters},
2586     year = {1996},
2587     volume = {255},
2588     pages = {99-104},
2589     number = {1-3},
2590     month = {Jun 7},
2591     abstract = {The effects of dipole-dipole interaction on mesophase formation are
2592     investigated with a Monte Carlo simulation using the dipolar Gay-Berne
2593     potential. It is shown that the dipole moment at the end of a molecule
2594     causes a shift in the nematic-isotropic transition toward higher
2595     temperature and a spread of the temperature range of the nematic
2596     phase and that layer structures with various interdigitations are
2597     formed in the smectic phase.},
2598     annote = {Uq975 Times Cited:32 Cited References Count:33},
2599     issn = {0009-2614},
2600     uri = {<Go to ISI>://A1996UQ97500017},
2601 tim 2685 }
2602    
2603 tim 2786 @ARTICLE{Shen2002,
2604     author = {M. Y. Shen and K. F. Freed},
2605     title = {Long time dynamics of met-enkephalin: Comparison of explicit and
2606     implicit solvent models},
2607     journal = {Biophysical Journal},
2608     year = {2002},
2609     volume = {82},
2610     pages = {1791-1808},
2611     number = {4},
2612     month = {Apr},
2613     abstract = {Met-enkephalin is one of the smallest opiate peptides. Yet, its dynamical
2614     structure and receptor docking mechanism are still not well understood.
2615     The conformational dynamics of this neuron peptide in liquid water
2616     are studied here by using all-atom molecular dynamics (MID) and
2617     implicit water Langevin dynamics (LD) simulations with AMBER potential
2618     functions and the three-site transferable intermolecular potential
2619     (TIP3P) model for water. To achieve the same simulation length in
2620     physical time, the full MID simulations require 200 times as much
2621     CPU time as the implicit water LID simulations. The solvent hydrophobicity
2622     and dielectric behavior are treated in the implicit solvent LD simulations
2623     by using a macroscopic solvation potential, a single dielectric
2624     constant, and atomic friction coefficients computed using the accessible
2625     surface area method with the TIP3P model water viscosity as determined
2626     here from MID simulations for pure TIP3P water. Both the local and
2627     the global dynamics obtained from the implicit solvent LD simulations
2628     agree very well with those from the explicit solvent MD simulations.
2629     The simulations provide insights into the conformational restrictions
2630     that are associated with the bioactivity of the opiate peptide dermorphin
2631     for the delta-receptor.},
2632     annote = {540MH Times Cited:36 Cited References Count:45},
2633     issn = {0006-3495},
2634     uri = {<Go to ISI>://000174932400010},
2635 tim 2685 }
2636    
2637 tim 2786 @ARTICLE{Shillcock2005,
2638     author = {J. C. Shillcock and R. Lipowsky},
2639     title = {Tension-induced fusion of bilayer membranes and vesicles},
2640     journal = {Nature Materials},
2641     year = {2005},
2642     volume = {4},
2643     pages = {225-228},
2644     number = {3},
2645     month = {Mar},
2646     annote = {901QJ Times Cited:9 Cited References Count:23},
2647     issn = {1476-1122},
2648     uri = {<Go to ISI>://000227296700019},
2649 tim 2685 }
2650    
2651 tim 2789 @ARTICLE{Shimada1993,
2652     author = {J. Shimada and H. Kaneko and T. Takada},
2653     title = {Efficient Calculations of Coulombic Interactions in Biomolecular
2654     Simulations with Periodic Boundary-Conditions},
2655     journal = {Journal of Computational Chemistry},
2656     year = {1993},
2657     volume = {14},
2658     pages = {867-878},
2659     number = {7},
2660     month = {Jul},
2661     abstract = {To make improved treatments of electrostatic interactions in biomacromolecular
2662     simulations, two possibilities are considered. The first is the
2663     famous particle-particle and particle-mesh (PPPM) method developed
2664     by Hockney and Eastwood, and the second is a new one developed here
2665     in their spirit but by the use of the multipole expansion technique
2666     suggested by Ladd. It is then numerically found that the new PPPM
2667     method gives more accurate results for a two-particle system at
2668     small separation of particles. Preliminary numerical examination
2669     of the various computational methods for a single configuration
2670     of a model BPTI-water system containing about 24,000 particles indicates
2671     that both of the PPPM methods give far more accurate values with
2672     reasonable computational cost than do the conventional truncation
2673     methods. It is concluded the two PPPM methods are nearly comparable
2674     in overall performance for the many-particle systems, although the
2675     first method has the drawback that the accuracy in the total electrostatic
2676     energy is not high for configurations of charged particles randomly
2677     generated.},
2678     annote = {Lh164 Times Cited:27 Cited References Count:47},
2679     issn = {0192-8651},
2680     uri = {<Go to ISI>://A1993LH16400011},
2681     }
2682    
2683 tim 2786 @ARTICLE{Skeel2002,
2684     author = {R. D. Skeel and J. A. Izaguirre},
2685     title = {An impulse integrator for Langevin dynamics},
2686     journal = {Molecular Physics},
2687     year = {2002},
2688     volume = {100},
2689     pages = {3885-3891},
2690     number = {24},
2691     month = {Dec 20},
2692     abstract = {The best simple method for Newtonian molecular dynamics is indisputably
2693     the leapfrog Stormer-Verlet method. The appropriate generalization
2694     to simple Langevin dynamics is unclear. An analysis is presented
2695     comparing an 'impulse method' (kick; fluctuate; kick), the 1982
2696     method of van Gunsteren and Berendsen, and the Brunger-Brooks-Karplus
2697     (BBK) method. It is shown how the impulse method and the van Gunsteren-Berendsen
2698     methods can be implemented as efficiently as the BBK method. Other
2699     considerations suggest that the impulse method is the best basic
2700     method for simple Langevin dynamics, with the van Gunsteren-Berendsen
2701     method a close contender.},
2702     annote = {633RX Times Cited:8 Cited References Count:22},
2703     issn = {0026-8976},
2704     uri = {<Go to ISI>://000180297200014},
2705 tim 2685 }
2706    
2707 tim 2786 @ARTICLE{Skeel1997,
2708     author = {R. D. Skeel and G. H. Zhang and T. Schlick},
2709     title = {A family of symplectic integrators: Stability, accuracy, and molecular
2710     dynamics applications},
2711     journal = {Siam Journal on Scientific Computing},
2712     year = {1997},
2713     volume = {18},
2714     pages = {203-222},
2715     number = {1},
2716     month = {Jan},
2717     abstract = {The following integration methods for special second-order ordinary
2718     differential equations are studied: leapfrog, implicit midpoint,
2719     trapezoid, Stormer-Verlet, and Cowell-Numerov. We show that all
2720     are members, or equivalent to members, of a one-parameter family
2721     of schemes. Some methods have more than one common form, and we
2722     discuss a systematic enumeration of these forms. We also present
2723     a stability and accuracy analysis based on the idea of ''modified
2724     equations'' and a proof of symplecticness. It follows that Cowell-Numerov
2725     and ''LIM2'' (a method proposed by Zhang and Schlick) are symplectic.
2726     A different interpretation of the values used by these integrators
2727     leads to higher accuracy and better energy conservation. Hence,
2728     we suggest that the straightforward analysis of energy conservation
2729     is misleading.},
2730     annote = {We981 Times Cited:30 Cited References Count:35},
2731     issn = {1064-8275},
2732     uri = {<Go to ISI>://A1997WE98100012},
2733 tim 2685 }
2734    
2735 tim 2786 @ARTICLE{Tao2005,
2736     author = {Y. G. Tao and W. K. {den Otter} and J. T. Padding and J. K. G. Dhont
2737     and W. J. Briels},
2738     title = {Brownian dynamics simulations of the self- and collective rotational
2739     diffusion coefficients of rigid long thin rods},
2740     journal = {Journal of Chemical Physics},
2741     year = {2005},
2742     volume = {122},
2743     pages = {-},
2744     number = {24},
2745     month = {Jun 22},
2746     abstract = {Recently a microscopic theory for the dynamics of suspensions of long
2747     thin rigid rods was presented, confirming and expanding the well-known
2748     theory by Doi and Edwards [The Theory of Polymer Dynamics (Clarendon,
2749     Oxford, 1986)] and Kuzuu [J. Phys. Soc. Jpn. 52, 3486 (1983)]. Here
2750     this theory is put to the test by comparing it against computer
2751     simulations. A Brownian dynamics simulation program was developed
2752     to follow the dynamics of the rods, with a length over a diameter
2753     ratio of 60, on the Smoluchowski time scale. The model accounts
2754     for excluded volume interactions between rods, but neglects hydrodynamic
2755     interactions. The self-rotational diffusion coefficients D-r(phi)
2756     of the rods were calculated by standard methods and by a new, more
2757     efficient method based on calculating average restoring torques.
2758     Collective decay of orientational order was calculated by means
2759     of equilibrium and nonequilibrium simulations. Our results show
2760     that, for the currently accessible volume fractions, the decay times
2761     in both cases are virtually identical. Moreover, the observed decay
2762     of diffusion coefficients with volume fraction is much quicker than
2763     predicted by the theory, which is attributed to an oversimplification
2764     of dynamic correlations in the theory. (c) 2005 American Institute
2765     of Physics.},
2766     annote = {943DN Times Cited:3 Cited References Count:26},
2767     issn = {0021-9606},
2768     uri = {<Go to ISI>://000230332400077},
2769 tim 2685 }
2770    
2771 tim 2786 @BOOK{Tolman1979,
2772     title = {The Principles of Statistical Mechanics},
2773     publisher = {Dover Publications, Inc.},
2774     year = {1979},
2775     author = {R.~C. Tolman},
2776     address = {New York},
2777     chapter = {2},
2778     pages = {19-22},
2779 tim 2685 }
2780    
2781 tim 2786 @ARTICLE{Tu1995,
2782     author = {K. Tu and D. J. Tobias and M. L. Klein},
2783     title = {Constant pressure and temperature molecular dynamics simulation of
2784     a fully hydrated liquid crystal phase dipalmitoylphosphatidylcholine
2785     bilayer},
2786     journal = {Biophysical Journal},
2787     year = {1995},
2788     volume = {69},
2789     pages = {2558-2562},
2790     number = {6},
2791     month = {Dec},
2792     abstract = {We report a constant pressure and temperature molecular dynamics simulation
2793     of a fully hydrated liquid crystal (L(alpha) phase bilayer of dipalmitoylphosphatidylcholine
2794     at 50 degrees C and 28 water molecules/lipid. We have shown that
2795     the bilayer is stable throughout the 1550-ps simulation and have
2796     demonstrated convergence of the system dimensions. Several important
2797     aspects of the bilayer structure have been investigated and compared
2798     favorably with experimental results. For example, the average positions
2799     of specific carbon atoms along the bilayer normal agree well with
2800     neutron diffraction data, and the electron density profile is in
2801     accord with x-ray diffraction results. The hydrocarbon chain deuterium
2802     order parameters agree reasonably well with NMR results for the
2803     middles of the chains, but the simulation predicts too much order
2804     at the chain ends. In spite of the deviations in the order parameters,
2805     the hydrocarbon chain packing density appears to be essentially
2806     correct, inasmuch as the area/lipid and bilayer thickness are in
2807     agreement with the most refined experimental estimates. The deuterium
2808     order parameters for the glycerol and choline groups, as well as
2809     the phosphorus chemical shift anisotropy, are in qualitative agreement
2810     with those extracted from NMR measurements.},
2811     annote = {Tv018 Times Cited:108 Cited References Count:34},
2812     issn = {0006-3495},
2813     uri = {<Go to ISI>://A1995TV01800037},
2814 tim 2685 }
2815    
2816 tim 2786 @ARTICLE{Tuckerman1992,
2817     author = {M. Tuckerman and B. J. Berne and G. J. Martyna},
2818     title = {Reversible Multiple Time Scale Molecular-Dynamics},
2819     journal = {Journal of Chemical Physics},
2820     year = {1992},
2821     volume = {97},
2822     pages = {1990-2001},
2823     number = {3},
2824     month = {Aug 1},
2825     abstract = {The Trotter factorization of the Liouville propagator is used to generate
2826     new reversible molecular dynamics integrators. This strategy is
2827     applied to derive reversible reference system propagator algorithms
2828     (RESPA) that greatly accelerate simulations of systems with a separation
2829     of time scales or with long range forces. The new algorithms have
2830     all of the advantages of previous RESPA integrators but are reversible,
2831     and more stable than those methods. These methods are applied to
2832     a set of paradigmatic systems and are shown to be superior to earlier
2833     methods. It is shown how the new RESPA methods are related to predictor-corrector
2834     integrators. Finally, we show how these methods can be used to accelerate
2835     the integration of the equations of motion of systems with Nose
2836     thermostats.},
2837     annote = {Je891 Times Cited:680 Cited References Count:19},
2838     issn = {0021-9606},
2839     uri = {<Go to ISI>://A1992JE89100044},
2840 tim 2685 }
2841    
2842 tim 2789 @BOOK{Varadarajan1974,
2843     title = {Lie groups, Lie algebras, and their representations},
2844     publisher = {Prentice-Hall},
2845     year = {1974},
2846     author = {V.S. Varadarajan},
2847     address = {New York},
2848     }
2849    
2850 tim 2786 @ARTICLE{Wegener1979,
2851     author = {W.~A. Wegener, V.~J. Koester and R.~M. Dowben},
2852     title = {A general ellipsoid can not always serve as a modle for the rotational
2853     diffusion properties of arbitrary shaped rigid molecules},
2854     journal = {Proc. Natl. Acad. Sci.},
2855     year = {1979},
2856     volume = {76},
2857     pages = {6356-6360},
2858     number = {12},
2859 tim 2685 }
2860    
2861 tim 2786 @ARTICLE{Withers2003,
2862     author = {I. M. Withers},
2863     title = {Effects of longitudinal quadrupoles on the phase behavior of a Gay-Berne
2864     fluid},
2865     journal = {Journal of Chemical Physics},
2866     year = {2003},
2867     volume = {119},
2868     pages = {10209-10223},
2869     number = {19},
2870     month = {Nov 15},
2871     abstract = {The effects of longitudinal quadrupole moments on the formation of
2872     liquid crystalline phases are studied by means of constant NPT Monte
2873     Carlo simulation methods. The popular Gay-Berne model mesogen is
2874     used as the reference fluid, which displays the phase sequences
2875     isotropic-smectic A-smectic B and isotropic-smectic B at high (T*=2.0)
2876     and low (T*=1.5) temperatures, respectively. With increasing quadrupole
2877     magnitude the smectic phases are observed to be stabilized with
2878     respect to the isotropic liquid, while the smectic B is destabilized
2879     with respect to the smectic A. At the lower temperature, a sufficiently
2880     large quadrupole magnitude results in the injection of the smectic
2881     A phase into the phase sequence and the replacement of the smectic
2882     B phase by the tilted smectic J phase. The nematic phase is also
2883     injected into the phase sequence at both temperatures considered,
2884     and ultimately for sufficiently large quadrupole magnitudes no coherent
2885     layered structures were observed. The stabilization of the smectic
2886     A phase supports the commonly held belief that, while the inclusion
2887     of polar groups is not a prerequisite for the formation of the smectic
2888     A phase, quadrupolar interactions help to increase the temperature
2889     and pressure range for which the smectic A phase is observed. The
2890     quality of the layered structure is worsened with increasing quadrupole
2891     magnitude. This behavior, along with the injection of the nematic
2892     phase into the phase sequence, indicate that the general tendency
2893     of the quadrupolar interactions is to destabilize the layered structure.
2894     A pressure dependence upon the smectic layer spacing is observed.
2895     This behavior is in much closer agreement with experimental findings
2896     than has been observed previously for nonpolar Gay-Berne and hard
2897     spherocylinder models. (C) 2003 American Institute of Physics.},
2898     annote = {738EF Times Cited:3 Cited References Count:43},
2899     issn = {0021-9606},
2900     uri = {<Go to ISI>://000186273200027},
2901 tim 2685 }
2902    
2903 tim 2789 @ARTICLE{Wolf1999,
2904     author = {D. Wolf and P. Keblinski and S. R. Phillpot and J. Eggebrecht},
2905     title = {Exact method for the simulation of Coulombic systems by spherically
2906     truncated, pairwise r(-1) summation},
2907     journal = {Journal of Chemical Physics},
2908     year = {1999},
2909     volume = {110},
2910     pages = {8254-8282},
2911     number = {17},
2912     month = {May 1},
2913     abstract = {Based on a recent result showing that the net Coulomb potential in
2914     condensed ionic systems is rather short ranged, an exact and physically
2915     transparent method permitting the evaluation of the Coulomb potential
2916     by direct summation over the r(-1) Coulomb pair potential is presented.
2917     The key observation is that the problems encountered in determining
2918     the Coulomb energy by pairwise, spherically truncated r(-1) summation
2919     are a direct consequence of the fact that the system summed over
2920     is practically never neutral. A simple method is developed that
2921     achieves charge neutralization wherever the r(-1) pair potential
2922     is truncated. This enables the extraction of the Coulomb energy,
2923     forces, and stresses from a spherically truncated, usually charged
2924     environment in a manner that is independent of the grouping of the
2925     pair terms. The close connection of our approach with the Ewald
2926     method is demonstrated and exploited, providing an efficient method
2927     for the simulation of even highly disordered ionic systems by direct,
2928     pairwise r(-1) summation with spherical truncation at rather short
2929     range, i.e., a method which fully exploits the short-ranged nature
2930     of the interactions in ionic systems. The method is validated by
2931     simulations of crystals, liquids, and interfacial systems, such
2932     as free surfaces and grain boundaries. (C) 1999 American Institute
2933     of Physics. [S0021-9606(99)51517-1].},
2934     annote = {189PD Times Cited:70 Cited References Count:34},
2935     issn = {0021-9606},
2936     uri = {<Go to ISI>://000079913000008},
2937     }
2938    
2939     @ARTICLE{Yoshida1990,
2940     author = {H. Yoshida},
2941     title = {Construction of Higher-Order Symplectic Integrators},
2942     journal = {Physics Letters A},
2943     year = {1990},
2944     volume = {150},
2945     pages = {262-268},
2946     number = {5-7},
2947     month = {Nov 12},
2948     annote = {Ej798 Times Cited:492 Cited References Count:9},
2949     issn = {0375-9601},
2950     uri = {<Go to ISI>://A1990EJ79800009},
2951     }
2952