Zobrazeno 1 - 10
of 1 954
pro vyhledávání: '"Havlin, S."'
Cascades are self-reinforcing processes underlying the systemic risk of many complex systems. Understanding the universal aspects of these phenomena is of fundamental interest, yet typically bound to numerical observations in ad-hoc models and limite
Externí odkaz:
http://arxiv.org/abs/2401.09313
Cascades are self-amplifying processes triggered by feedback mechanisms that may cause a substantial part of a macroscopic system to change its phase in response of a relatively small local event. The theoretical background for these phenomena is ric
Externí odkaz:
http://arxiv.org/abs/2207.01669
Autor:
Perez, I. A., Porath, D. Vaknin Ben, La Rocca, C. E., Buldyrev, S. V., Braunstein, L. A., Havlin, S.
In this paper we study the Motter-Lai model of cascading failures induced by overloads in both isotropic and anisotropic spatial networks, generated by placing nodes in a square lattice and using various distributions of link lengths and angles. Anis
Externí odkaz:
http://arxiv.org/abs/2112.11308
Autor:
Buldyrev, S. V., Raposo, E. P., Bartumeus, F., Havlin, S., Rusch, F. R., da Luz, M. G. E., Viswanathan, G. M.
Publikováno v:
Physical Review Letters 126, 048901 (2021)
It is widely accepted that inverse square L\'evy walks are optimal search strategies because they maximize the encounter rate with sparse, randomly distributed, replenishable targets when the search restarts in the vicinity of the previously visited
Externí odkaz:
http://arxiv.org/abs/2103.10865
Publikováno v:
Phys. Rev. E 101, 032309 (2020)
In the past few decades, the frequency of pandemics has been increased due to the growth of urbanization and mobility among countries. Since a disease spreading in one country could become a pandemic with a potential worldwide humanitarian and econom
Externí odkaz:
http://arxiv.org/abs/1909.09695
Publikováno v:
New J. Phys. 20 (2018) 083025
How to prevent the spread of human diseases is a great challenge for the scientific community and so far there are many studies in which immunization strategies have been developed. However, these kind of strategies usually do not consider that medic
Externí odkaz:
http://arxiv.org/abs/1805.01564
Publikováno v:
Phys. Rev. E 99, 012302 (2019)
In this work we propose and investigate a new strategy of vaccination, which we call "dynamic vaccination". In our model, susceptible people become aware that one or more of their contacts are infected, and thereby get vaccinated with probability $\o
Externí odkaz:
http://arxiv.org/abs/1804.10593
Recent network research has focused on the cascading failures in a system of interdependent networks and the necessary preconditions for system collapse. An important question that has not been addressed is how to repair a failing system before it su
Externí odkaz:
http://arxiv.org/abs/1512.02555
Publikováno v:
Scientific Reports 6, 21297 (2016)
Many real-world networks exhibit degree-assortativity, with nodes of similar degree more likely to link to one another. Particularly in social networks, the contribution to the total assortativity varies with degree, featuring a distinctive peak slig
Externí odkaz:
http://arxiv.org/abs/1508.03528
Populations are seldom completely isolated from their environment. Individuals in a particular geographic or social region may be considered a distinct network due to strong local ties, but will also interact with individuals in other networks. We st
Externí odkaz:
http://arxiv.org/abs/1201.6339