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We use a stochastic Markovian dynamics approach to describe the spreading of vector-transmitted diseases, like dengue, and the threshold of the disease. The coexistence space is composed by two structures representing the human and mosquito…

种群与进化 · 定量生物学 2013-01-01 David R. Souza , Tânia Tomé , Suani T. R. Pinho , Florisneide R. Barreto , Mário J. de Oliveira

Using the generalized DMFT+Sigma approach we have studied disorder influence on single-particle properties of the normal phase and superconducting transition temperature in attractive Hubbard model. The wide range of attractive potentials U…

超导电性 · 物理学 2018-10-12 E. Z. Kuchinskii , N. A. Kuleeva , M. V. Sadovskii

Human mobility, contact patterns, and their interplay are key aspects of our social behavior that shape the spread of infectious diseases across different regions. In the light of new evidence and data sets about these two elements,…

We show that the recently introduced operator fidelity metric provides a natural tool to investigate the cross-over to quantum chaotic behaviour. This metric is an information-theoretic measure of the global stability of a unitary evolution…

量子物理 · 物理学 2015-05-13 Paolo Giorda , Paolo Zanardi

We study contact epidemic models for the spread of infective diseases in finite populations. The size dependence enters in the infection rate. The dynamics of such models is then analyzed within the deterministic approximation, as well as…

种群与进化 · 定量生物学 2020-04-07 Ph. Blanchard , S. Nicolis

A broad range of nonlinear processes over networks are governed by threshold dynamics. So far, existing mathematical theory characterizing the behavior of such systems has largely been concerned with the case where the thresholds are…

In Fall 2020, several European countries reported rapid increases in COVID-19 cases along with growing estimates of the effective reproduction rates. Such an acceleration in epidemic spread is usually attributed to time-dependent effects,…

种群与进化 · 定量生物学 2022-11-30 Nazmi Burak Budanur , Björn Hof

The primary goal of this research is to investigate the impact of delay on the dynamics of the Susceptible-Exposed-Infected-Recovered-Death and Susceptible (SEIRDS) model, to which we add a stochastic term to account for uncertainty in…

种群与进化 · 定量生物学 2022-08-17 Mohamed Ben Alaya , Walid Ben Aribi , Slimane Ben Miled

We study an individual-based stochastic epidemic model in which infected individuals become susceptible again following each infection. In contrast to classical compartment models, after each infection, the infectivity is a random function…

We propose a model of the immunity to a cyclical epidemic disease taking account not only of seasonal boosts during the infectious season, but also of residual immunity remaining from one season to the next. The focus is on the exponential…

种群与进化 · 定量生物学 2024-04-22 Siyu Chen , David Sankoff

We show that the classic example of quasiperiodically forced maps with strange nonchaotic attractors described by Grebogi et al and Herman in the mid-1980s have some chaotic properties. More precisely, we show that these systems exhibit…

动力系统 · 数学 2009-11-11 Paul Glendinning , Tobias Jaeger , Gerhard Keller

Despite the advanced stage of epidemic modeling, there is a major demand for methods to incorporate behavioral responses to the spread of a disease such as social distancing and adoption of prevention methods. Mobility plays an important…

物理与社会 · 物理学 2022-03-14 Paulo Cesar Ventura , Alberto Aleta , Francisco A. Rodrigues , Yamir Moreno

The presence of chaotic transients in a nonlinear dynamo is investigated through numerical simulations of the 3D magnetohydrodynamic equations. By using the kinetic helicity of the flow as a control parameter, a hysteretic blowout…

等离子体物理 · 物理学 2022-06-30 Dalton N. Oliveira , Erico L. Rempel , Roman Chertovskih , Bidya B. Karak

We study a dynamics of the epidemiological infection spreading at different values of the risk factor $\beta$ (a control parameter) with the using of dynamic Monte Carlo approach (DMC). In our toy model, the infection transmits due to…

物理与社会 · 物理学 2020-06-01 Gennadiy Burlak

We study the long time behaviour of the transient before the collapse on the periodic attractors of a discrete deterministic asymmetric neural networks model. The system has a finite number of possible states so it is not possible to use…

凝聚态物理 · 物理学 2009-10-22 A. Crisanti , M falcioni , A. Vulpiani

The primary tool for predicting infectious disease spread and intervention effectiveness is the mass action Susceptible-Infected-Recovered model of Kermack and McKendrick. Its usefulness derives largely from its conceptual and mathematical…

种群与进化 · 定量生物学 2015-09-03 Joel C. Miller , Anja C. Slim , Erik M. Volz

We investigate the influence of time-varying environmental noise, i.e., temporal disorder, on the nonequilibrium phase transition of the contact process. Combining a real-time renormalization group, scaling theory, and large scale…

统计力学 · 物理学 2016-08-25 Hatem Barghathi , Jose A. Hoyos , Thomas Vojta

We present an application of optimal control theory to Dengue epidemics. This epidemiologic disease is an important theme in tropical countries due to the growing number of infected individuals. The dynamic model is described by a set of…

最优化与控制 · 数学 2010-08-27 Helena Sofia Rodrigues , M. Teresa T. Monteiro , Delfim F. M. Torres

A ternary reaction-diffusion model for early HIV infection dynamics, incorporating logistic growth of target cells, is introduced. According to in vitro and in vivo studies, random movement of target cells, infected cells, and virions and a…

种群与进化 · 定量生物学 2024-10-21 Florinda Capone , Roberta De Luca , Vincenzo Luongo

Predicting the evolution of diseases is challenging, especially when the data availability is scarce and incomplete. The most popular tools for modelling and predicting infectious disease epidemics are compartmental models. They stratify…

机器学习 · 计算机科学 2023-10-10 Esha Saha , Lam Si Tung Ho , Giang Tran
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