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Simulations with an adaptive time-dependent bias, such as metadynamics, enable an efficient exploration of the conformational space of a system. However, the dynamic information of the system is altered by the bias. With infrequent…

We study systems of reaction-diffusion equations with discontinuous spatially distributed hysteresis in the right-hand side. The input of hysteresis is given by a vector-valued function of space and time. Such systems describe hysteretic…

偏微分方程分析 · 数学 2013-09-27 Pavel Gurevich , Sergey Tikhomirov

In this paper we introduce the idea of probability in the definition of Sequential Dynamical Systems, thus obtaining a new concept, Probabilistic Sequential System. The introduction of a probabilistic structure on Sequential Dynamical…

动力系统 · 数学 2007-05-23 Maria A. Avino-Diaz

A practical introduction to stochastic modelling of reaction-diffusion processes is presented. No prior knowledge of stochastic simulations is assumed. The methods are explained using illustrative examples. The article starts with the…

亚细胞过程 · 定量生物学 2007-11-19 Radek Erban , Jonathan Chapman , Philip Maini

We propose a probabilistic cellular automata model for the spread of innovations, rumors, news, etc. in a social system. The local rule used in the model is outertotalistic, and the range of interaction can vary. When the range R of the…

adap-org · 物理学 2008-02-03 Henryk Fuks , Nino Boccara

The calculation of optimal structures in reaction-diffusion models is of great importance in many physicochemical systems. We propose here a simple method to monitor the number of interphases for long times by using a boundary flux…

化学物理 · 物理学 2014-03-06 Jean-Paul Chehab , Alejandro A. Franco , Youcef Mammeri

Diffusion mediated reaction models are particularly ubiquitous in the description of physical, chemical or biological processes. The random walk schema is a useful tool for formulating these models. Recently, evanescent random walk models…

数据分析、统计与概率 · 物理学 2015-10-08 Miguel A. Ré , Natalia C. Bustos

With the rise of computers, simulation models have emerged beside the more traditional statistical and mathematical models as a third pillar for ecological analysis. Broadly speaking, a simulation model is an algorithm, typically…

种群与进化 · 定量生物学 2018-12-24 Florian Hartig

Hypergraphs have emerged as a powerful modeling framework to represent systems with multiway interactions, that is systems where interactions may involve an arbitrary number of agents. Here we explore the properties of real-world…

社会与信息网络 · 计算机科学 2023-07-11 Timothy LaRock , Renaud Lambiotte

Generative models show great promise for the inverse design of molecules and inorganic crystals, but remain largely ineffective within more complex structures such as amorphous materials. Here, we present a diffusion model that reliably…

无序系统与神经网络 · 物理学 2026-01-21 Kai Yang , Daniel Schwalbe-Koda

A small-world cellular automaton network has been formulated to simulate the long-range interactions of complex networks using unconventional computing methods in this paper. Conventional cellular automata use local updating rules. The new…

元胞自动机与格子气 · 物理学 2010-03-26 Xin-She Yang , Young Z. L. Yang

Diffusion Models are probabilistic models that create realistic samples by simulating the diffusion process, gradually adding and removing noise from data. These models have gained popularity in domains such as image processing, speech…

计算机视觉与模式识别 · 计算机科学 2024-08-21 Md Manjurul Ahsan , Shivakumar Raman , Yingtao Liu , Zahed Siddique

Much of our mechanistic understanding of the functions of biological macromolecules is based on static structural experiments, which can be modelled either as single structures or conformational ensembles. While these provide us with…

生物大分子 · 定量生物学 2025-10-02 Daria Gusew , Carl G. Henning Hansen , Kresten Lindorff-Larsen

We investigate a probabilistic cellular automaton model which has been introduced recently. This model describes single-lane traffic flow on a ring and generalizes the asymmetric exclusion process models. We study the equilibrium properties…

凝聚态物理 · 物理学 2009-10-22 M. Schreckenberg , A. Schadschneider , K. Nagel , N. Ito

Chemical reaction systems with a low to moderate number of molecules are typically modeled as discrete jump Markov processes. These systems are oftentimes simulated with methods that produce statistically exact sample paths such as the…

分子网络 · 定量生物学 2015-05-13 David F. Anderson

A one-dimensional model on a line of the length L is investigated, which involves particle diffusion as well as single particle annihilation. There are also creation and annihilation at the boundaries. The static and dynamical behaviors of…

数学物理 · 物理学 2014-03-17 Mohammad Khorrami , Amir Aghamohammadi

This paper is a survey of extensions to finite automata theory to model real-time systems as well as systems exhibiting mixed discrete-continuous behavior. Real-time systems maintain a continuous and timely interaction with the environment,…

形式语言与自动机理论 · 计算机科学 2018-11-27 Lakhan Shiva Kamireddy

The parameter space of dynamical systems arising in applications is often found to be high-dimensional and difficult to explore. We construct a fast algorithm to numerically analyze "quantitative features" of dynamical systems depending on…

数值分析 · 数学 2008-07-15 Christian Kuehn

Simulating percolation and critical phenomena of labelled species inside films composed of single-component linear homogeneous macromolecules using molecular Monte Carlo method in 3 dimensions, we study dependence of these conducting…

软凝聚态物质 · 物理学 2019-09-05 Yuki Norizoe , Hiroshi Morita

This work is devoted to examining qualitative properties of dynamic systems, in particular, limit cycles of stochastic differential equations with both rapid switching and small diffusion. The systems are featured by multi-scale…

动力系统 · 数学 2017-07-20 Dang H. Nguyen , Nguyen H. Du , George Yin