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Two models involving particles moving by ``hopping'' in disordered media are investigated: I) A model glass-forming liquid is investigated by molecular dynamics under (pseudo-) equilibrium conditions. ``Standard'' results such as mean…

Disordered Systems and Neural Networks · Physics 2007-05-23 Thomas B. Schroeder

Background and Objective: The survival-agreement plot was proposed and improved to assess the reliability of a quantitative measure. We propose the use of survival analysis as an alternative non-parametric approach for comparison of ordinal…

Applications · Statistics 2009-04-27 B. de B. Pereira , E. M. Nascimento , F. Felix , G. F. M. Rezende

Hepatocellular carcinoma (HCC) can be potentially discovered from abdominal computed tomography (CT) studies under varied clinical scenarios, e.g., fully dynamic contrast enhanced (DCE) studies, non-contrast (NC) plus venous phase (VP)…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Chi-Tung Cheng , Jinzheng Cai , Wei Teng , Youjing Zheng , YuTing Huang , Yu-Chao Wang , Chien-Wei Peng , Youbao Tang , Wei-Chen Lee , Ta-Sen Yeh , Jing Xiao , Le Lu , Chien-Hung Liao , Adam P. Harrison

Hepatitis C virus (HCV) infection is endemic in people who inject drugs (PWID), with prevalence estimates above 60 percent for PWID in the United States. Previous modeling studies suggest that direct acting antiviral (DAA) treatment can…

Populations and Evolution · Quantitative Biology 2019-03-06 Bilal Khan , Ian Duncan , Mohamad Saad , Daniel Schaefer , Ashly Jordan , Daniel Smith , Alan Neaigus , Don Des Jarlais , Holly Hagan , Kirk Dombrowski

An epidemic model, where the dispersal is approximated by nonlocal diffusion operator and spatial domain has one ?xed boundary and one free boundary, is considered in this paper. Firstly, using some elementary analysis instead of…

Analysis of PDEs · Mathematics 2024-05-08 Lei Li , Mingxin Wang

In this paper we analyze a continuous-time epidemic model and its discrete counterpart, where infection spreads both horizontally and vertically. We consider three cases: model with horizontal and imperfect vertical transmissions, model…

Dynamical Systems · Mathematics 2019-06-10 Priyanka Saha , Nandadulal Bairagi

Mathematical modelling of epidemiological and coevolutionary dynamics is widely being used to improve disease management strategies of infectious diseases. Many diseases present some form of intra-host quiescent stage, also known as covert…

Populations and Evolution · Quantitative Biology 2022-05-26 Usman Sanusi , Sona John , Johannes Mueller , Aurélien Tellier

Modeling spreading processes in complex random networks plays an essential role in understanding and prediction of many real phenomena like epidemics or rumor spreading. The dynamics of such systems may be represented algorithmically by…

Social and Information Networks · Computer Science 2012-11-20 S. V. Ivanov , A. V. Boukhanovsky , P. M. A. Sloot

The dynamics of a mathematical model of the Calvin cycle, which is part of photosynthesis, is analysed. Since diffusion of ATP is included in the model a system of reaction-diffusion equations is obtained. It is proved that for a suitable…

Molecular Networks · Quantitative Biology 2021-06-29 Burcu Gürbüz , Alan D. Rendall

The coexistence of different viral strains (quasispecies) within the same host are nowadays observed for a growing number of viruses, most notably HIV, Marburg and Ebola, but the conditions for the formation and survival of new strains have…

Populations and Evolution · Quantitative Biology 2008-01-20 Franco Bagnoli , Pietro Lio' , Luca Sguanci

In some studies requiring predictive and CPU-time consuming numerical models, the sampling design of the model input variables has to be chosen with caution. For this purpose, Latin hypercube sampling has a long history and has shown its…

Computation · Statistics 2011-04-22 Matthieu Petelet , Bertrand Iooss , Olivier Asserin , Alexandre Loredo

Considering the propagation characteristics of COVID-19 in different regions, the dynamics analysis and numerical demonstration of long-term and short-term models of COVID-19 are carried out, respectively. The long-term model is devoted to…

Dynamical Systems · Mathematics 2022-11-08 Songbai Guo , Yuling Xue , Xiliang Li , Zuohuan Zheng

We explore the dynamical stabilities of a quasi-one dimensional (1D) Bose-Einstein condensate (BEC) consisting of fixed $N$ atoms with time-independent external potential. For the stationary states with zero flow density the general…

Quantum Physics · Physics 2009-11-13 Wenhua Hai , Guishu Chong , Jianwen Song

The present article considers stability of the solutions to nonlinear and nonautonomous compartmental systems governed by ordinary differential equations (ODEs). In particular, compartmental systems with a right-hand side that can be…

Systems and Control · Electrical Eng. & Systems 2025-02-21 Sondre Wiersdalen , Mike Pereira , Annika Lang , Gabor Szederkenyi , Jean Auriol , Balazs Kulcsar

In this paper, we study the family of inhomogeneous discounted Hamilton-Jacobi equations \begin{equation}\label{hjs1} \lambda(x)u+h(x,d_x u)=c \quad \tag{$\ast$} \end{equation} on a closed manifold $M$ with a non-identically vanishing…

Analysis of PDEs · Mathematics 2026-05-08 Liang Jin , Jun Yan , Kai Zhao

Among the different computational approaches modelling the dynamics of isogenic cell populations, discrete stochastic models can describe with sufficient accuracy the evolution of small size populations. However, for a systematic and…

Molecular Networks · Quantitative Biology 2013-12-16 I Aviziotis , M Kavousanakis , I Bitsanis , A Boudouvis

In this work we have investigated the evolutionary dynamics of a generalist pathogen, e.g. a virus population, that evolves towards specialisation in an environment with multiple host types. We have particularly explored under which…

Dynamical Systems · Mathematics 2020-06-24 Anel Nurtay , Matthew G. Hennessy , Lluís Alsedà , Santiago F. Elena , Josep Sardanyés

Endpoint dilution (TCID50) assays cannot count the number of infectious virions (IVs), and instead are limited to counting the number of Specific INfections caused by the sample (SIN). The latter depends not only on whether virions are…

This paper is devoted to investigate the pattern formation of a volume-filling chemotaxis model with logistic cell growth. We first apply the local stability analysis to establish sufficient conditions of destabilization for uniform…

Analysis of PDEs · Mathematics 2016-11-22 Yazhou Han , Zhongfang Li , Jicheng Tao , Manjun Ma

Analytical stability calculation is done to prove stability properties for systems with parameters that do not have explicit values. For systems with three components, the usual method of finding the characteristic polynomial as the…

Dynamical Systems · Mathematics 2023-10-31 Glenn Ledder
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