Hasil untuk "cond-mat.soft"

Menampilkan 20 dari ~517367 hasil · dari arXiv, Semantic Scholar, CrossRef

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arXiv Open Access 2025
Efficient Microcanonical Histogram Analysis and Application to Peptide Aggregation

Michael Bachmann

A novel approach designed to directly estimate microcanonical quantities from energy histograms is proposed, which enables the immediate systematic identification and classification of phase transitions in physical systems of any size by means of the recently introduced generalized microcanonical inflection-point analysis method. The application to the aggregation problem of GNNQQNY heptapeptides, for which the entire transition sequence is revealed, shows the power of this promising method.

en cond-mat.stat-mech, cond-mat.soft
arXiv Open Access 2024
Hydrodynamically consistent many-body Harada-Sasa relation

Ramin Golestanian

The effect of hydrodynamic interactions on the non-equilibrium stochastic dynamics of particles -- arising from the conservation of momentum in the fluid medium -- is examined in the context of the relationship between fluctuations, response functions, and the entropy production rate. The multiplicative nature of the hydrodynamic interactions is shown to introduce subtleties that preclude a straightforward extension of the Harada-Sasa relation. A generalization of the definitions involved in the framework is used to propose a new form of the relation applicable to systems with hydrodynamic interactions. The resulting framework will enable characterization of the non-equilibrium properties of living and active matter systems, which are predominantly in suspensions.

en cond-mat.stat-mech, cond-mat.soft
S2 Open Access 2021
Comparisons of method of fundamental solutions, method of particular solutions and the MFS-QR; stability analysis

Liping Zhang, Zi-Cai Li, Hung‐Tsai Huang et al.

Abstract The goals of this paper are twofold: selection of pseudo-boundaries for sources nodes in the method of fundamental solutions (MFS), and comparisons of the MFS, the method of particular solutions (MPS) and the MFS-QR of Antunes. To pursue better pseudo-boundaries, we provide new estimates of the condition number (Cond) by the MFS for arbitrary pseudo-boundaries, and propose a new sensitivity index of stability via accuracy. Numerical experiments and comparisons are carried out to verify the analysis made. For five-pedal-flower-like domains, numerical comparisons are made by the sensitivity index. Circular pseudo-boundaries are optimal for highly smooth solutions, but the pseudo-boundaries near the domain boundary may be better for singular solutions. In this paper the gap has been shortened between theoretical analysis and numerical computation of the MFS, to provide some guidance for users. This is the first goal of this paper. The second goal is to compare the MFS, the MPS and the MFS-QR. Characteristics of the MFS-QR are explored. The new basis functions of the MFS-QR are the very particular solutions (PS), and the MFS-QR may be regarded as a special MPS. The MFS-QR is not a variant of the MFS but a variant of the MPS. The MFS-QR also plays a role in bridging from the MFS to the MPS. Both the MFS and the MPS can also be recognized as twins via the MFS-QR in the Trefftz family. The comparisons in this paper are more comprehensive.

9 sitasi en Computer Science
CrossRef Open Access 2019
Other separation axioms in soft bi-topological spaces

Arif Mehmood Khattak, Fawad Nadeem, Muhammad Zamir et al.

The main objective of this article is to introduce soft generalized separation axioms in soft bi topological spacesrelative to crisp points and soft points. Further we will address the behavior of soft semi T3 and soft normal semiT4 spaces at different angles with respect to ordinary points as well as with respect to soft points. Hereditaryproperties are also discussed

1 sitasi en
arXiv Open Access 2019
Relaxation to the equilibrium in the hard disk dynamics

Liliia Ziganurova, Lev N. Shchur

We examine the question of the criteria of the relaxation to the equilibrium in the hard disk dynamics. In the Event-Chain Monte Carlo, we check the displacement distributions which follows to the exponential law.

en cond-mat.stat-mech, cond-mat.soft
S2 Open Access 2018
Kinematic Comparison of the Roundhouse Kick Between Taekwondo, Karate, and Muaythai.

Rossano Diniz, F. D. Del Vecchio, G. Z. Schaun et al.

Diniz, R, Del Vecchio, FB, Schaun, GZ, Oliveira, HB, Portella, EG, da Silva, ES, Formalioni, A, Campelo, PCC, Peyré-Tartaruga, LA, and Pinto, SS. Kinematic comparison of the roundhouse kick between taekwondo, karate, and muaythai. J Strength Cond Res XX(X): 000-000, 2018-The roundhouse kick (RHK) is frequently executed in taekwondo, karate, and muaythai because of its high technical effectiveness during combat. The purpose of this study was to compare kinematic characteristics during RHK performance between taekwondo, karate, and muaythai athletes. Forty-seven male athletes (25.5 ± 4.7 years, 1.75 ± 0.1 m, and 75.8 ± 11.5 kg) volunteered to participate (taekwondo: 17; karate: 15; and muaythai: 15). Self-selected distance from target, mean and peak fifth metatarsus linear velocity (LV5mean; LV5peak), mean and peak hip (HAVmean; HAVpeak) and knee (KAVmean; KAVpeak) angular velocities, as well as target linear acceleration (TLA) were analyzed with a 3D video motion analysis system. Comparisons between modalities were performed with 1-way analysis of variances and Bonferroni's post hoc test (α = 0.05). Self-selected distance was lower in muaythai compared with taekwondo and karate (p < 0.001). Also, karate had greater LV5mean compared with muaythai (p = 0.001), and muaythai showed higher HAVmean than karate (p = 0.011). In addition, HAVpeak was greater in muaythai than in taekwondo and karate (p < 0.001). No differences were found for KAVmean, KAVpeak, and TLA. Although it is similarly described between modalities, RHK showed distinct kinematic characteristics between taekwondo, karate, and muaythai. Based on these results, coaches and athletes can improve their RHK technique according to the specificities of each combat sport. Specifically, it is suggested that combat strategies should aim to increase the distance from the opponent during combat for muaythai athletes, whereas taekwondo and karate athletes should focus on decreasing it.

25 sitasi en Medicine, Mathematics
arXiv Open Access 2018
On the shape of invading population in oriented environments

V. Blavatska

We analyze the properties of population spreading in environments with spatial anisotropy within the frames of a lattice model of asymmetric (biased) random walkers. The expressions for the universal shape characteristics of the instantaneous configuration of population, such as asphericity $A$ and prolateness $S$ are found analytically and proved to be dependent only on the asymmetric transition probabilities in different directions. The model under consideration is shown to capture, in particular, the peculiarities of invasion in presence of an array of oriented tubes (fibers) in the environment.

en cond-mat.dis-nn, cond-mat.soft
S2 Open Access 2014
Maternal Depression: A Hidden Burden in Developing Countries

P. Shidhaye, Parimal Giri

Maternal depress on s an all-encompass ng term for a spectrum of depress ve cond t ons that can affect mothers (up to 12 months postpartum) and mothers-to-be. These depress ve cond t ons nclude prenatal depress on, postpartum depress on, and postpartum psychos s. Maternal depress on s ncreas ngly recogn zed as a worldw de publ c health ssue and can have a negat ve mpact on an nd v dual's l fe that s far reach ng, affect ng work, fam ly and the health and development of the baby.[1] Approx mately, 10-20% of women exper ence depress on e ther dur ng pregnancy or n the f rst 12 months postpartum. Maternal depress on can lead to ser ous health r sks for both the mother and nfant, ncreas ng the r sk for costly compl cat ons dur ng b rth and caus ng long-last ng or even permanent effects on ch ld development and well-be ng. Lowand m ddlencome countr es (LAMICs) are home to more than 80% of the global populat on, but command <20% of the share of the mental health resources.[2] Worldw de depress on affects 121 m ll on people. At ts most, severe depress on can lead to su c de and s respons ble for 850,000 deaths every year, and by 2020, depress on w ll be the second lead ng cause of d sab l ty (World Health Organ zat on [WHO], 2001) and by 2030; t s expected to be the largest contr butor to d sease burden. Depress on s part cularly common among women. Although, depress on s the lead ng cause for both males and females, the burden of depress on s 50% h gher for females than males.[3]

98 sitasi en Medicine

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