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Epidemic spreading is well understood when a disease propagates around a contact graph. In a stochastic susceptible-infected-susceptible setting, spectral conditions characterise whether the disease vanishes. However, modelling human…

社会与信息网络 · 计算机科学 2021-09-15 Desmond John Higham , Henry-Louis de Kergorlay

Recent empirical observations of three-dimensional bird flocks and human crowds have challenged the long-prevailing assumption that a metric interaction distance rules swarming behaviors. In some cases, individual agents are found to be…

生物物理 · 物理学 2022-09-29 Yilun Shang , Roland Bouffanais

In this work, we study the epidemic SIR model on a system which takes into consideration face-to-face interaction networks. This approach has been used as prototype to describe people interactions in different kinds of social organizations…

In this paper we introduce the optimal control of a kinetic model describing agents who migrate on a graph and interact within its nodes exchanging a physical quantity. As a prototype model, we consider the spread of an infectious disease…

最优化与控制 · 数学 2026-01-15 Jonathan Franceschi , Nadia Loy

Scaling mobility patterns have been widely observed for animals. In this paper, we propose a deterministic walk model to understand the scaling mobility patterns, where walkers take the least-action walks on a lattice landscape and prey.…

数据分析、统计与概率 · 物理学 2015-05-20 Xiao-Pu Han , Tao Zhou , Bing-Hong Wang

Despite their importance for the spread of zoonotic diseases, our understanding of the dynamical aspects characterizing the movements of farmed animal populations remains limited as these systems are traditionally studied as static objects…

物理与社会 · 物理学 2011-05-20 Paolo Bajardi , Alain Barrat , Fabrizio Natale , Lara Savini , Vittoria Colizza

A spreading process can be observed when particular information, substances, or diseases spread through a population over time in social and biological systems. It is widely believed that contact interactions among individual entities play…

物理与社会 · 物理学 2024-07-08 Jaeyoung Kwak , Michael H. Lees , Wentong Cai

In this work we propose a novel space-dependent multiscale model for the spread of infectious diseases in a two-dimensional spatial context on realistic geographical scenarios. The model couples a system of kinetic transport equations…

数值分析 · 数学 2020-12-21 Walter Boscheri , Giacomo Dimarco , Lorenzo Pareschi

Agricultural losses to pest represent an important challenge in a global warming scenario. Intercropping is an alternative farming practice that promotes pest control without the use of chemical pesticides. Here we develop a mathematical…

种群与进化 · 定量生物学 2019-09-11 Alfonso Allen-Perkins , Ernesto Estrada

Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi, which can be spread, directly or indirectly, from one person to another. Infectious diseases pose a serious threat to human health,…

社会与信息网络 · 计算机科学 2021-06-18 Ting Jiang , Yang Zhang , Minhao Zhang , Ting Yu , Yizheng Chen , Chenhao Lu , Ji Zhang , Zhao Li , Jun Gao , Shuigeng Zhou

For rapidly spreading diseases where many cases show no symptoms, swift and effective contact tracing is essential. While exposure notification applications provide alerts on potential exposures, a fully automated system is needed to track…

社会与信息网络 · 计算机科学 2025-01-31 Sofia Hurtado , Radu Marculescu

Asymptomatic infection has gained notoriety as an important feature of infectious disease dynamics. Despite increasing attention, there have been few rigorous examinations of how asymptomatic transmission influences pathogen evolution. In…

种群与进化 · 定量生物学 2025-03-06 C. Brandon Ogbunugafor , Sudam Surasinghe

A pair of random walkers, the motion of each of which in two dimensions is confined spatially by the action of a quadratic potential centered at different locations for the two walks, are analyzed in the context of reaction-diffusion. The…

生物物理 · 物理学 2016-10-20 S. Sugaya , V. M. Kenkre

One Health issues, such as the spread of highly pathogenic avian influenza~(HPAI), present significant challenges at the human-animal-environmental interface. Recent H5N1 outbreaks underscore the need for comprehensive modeling efforts that…

计算工程、金融与科学 · 计算机科学 2026-03-06 Abhijin Adiga , Ayush Chopra , Mandy L. Wilson , S. S. Ravi , Dawen Xie , Samarth Swarup , Bryan Lewis , Andrew Warren , John Barnes , Ramesh Raskar , Madhav V. Marathe

Path integration enables desert arthropods to find back to their nest on the shortest track from any position. To perform path integration successfully, speeds and turning angles along the preceding outbound path have to be measured…

神经元与认知 · 定量生物学 2007-05-23 Tobias Merkle , Martin Rost , Wolfgang Alt

Ants are known to be able to find paths of minimal length between the nest and food sources. The deposit of pheromones while they search for food and their chemotactical response to them has been proposed as a crucial element in the…

种群与进化 · 定量生物学 2011-03-09 M. Vela-Pérez , M. A. Fontelos , J. J. L. Velázquez

This paper investigates the dynamics of infectious diseases with a non-exponentially distributed infectious period. This is achieved by considering a multi-stage infection model on networks. Using pairwise approximation with a standard…

物理与社会 · 物理学 2015-11-23 N. Sherborne , K. B. Blyuss , I. Z. Kiss

Identifying areas in a landscape where individuals have a higher likelihood of disease infection is key to managing diseases. Unlike conventional methods relying on ecological assumptions, we perform a novel epidemiological tomography for…

A spreading process can be observed when a particular behavior, substance, or disease spreads through a population over time in social and biological systems. It is widely believed that contact interactions among individual entities play an…

物理与社会 · 物理学 2024-01-08 Jaeyoung Kwak , Michael H. Lees , Wentong Cai

Animals that travel together in groups display a variety of fascinating motion patterns thought to be the result of delicate local interactions among group members. Although the most informative way of investigating and interpreting…

生物物理 · 物理学 2010-10-27 Mate Nagy , Zsuzsa Akos , Dora Biro , Tamas Vicsek