Exploració per autor "Pastor Satorras, Romualdo"
Ara es mostren els items 21-40 de 134
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Corrections to scaling in the forest-fire model
Pastor Satorras, Romualdo; Vespignani, Alessandro (2000-05)
Article
Accés obertWe present a systematic study of corrections to scaling in the self-organized critical forest-fire model. The analysis of the steady-state condition for the density of trees allows us to pinpoint the presence of these ... -
Correlations in complex networks
Serrano Moral, Maria Angeles; Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (2007-01-01)
Capítol de llibre
Accés restringit per política de l'editorialThis book is the culmination of three years of research effort on a multidisciplinary project in which physicists, mathematicians, computer scientists and social scientists worked together to arrive at a unifying picture ... -
Correlations in weighted networks
Serrano Moral, Maria Angeles; Boguña Espinal, Marian; Pastor Satorras, Romualdo (2006-11)
Article
Accés obertWe develop a statistical theory to characterize correlations in weighted networks. We define the appropriate metrics quantifying correlations and show that strictly uncorrelated weighted networks do not exist due to the ... -
Critical behavior and conservation in directed sandpiles
Pastor Satorras, Romualdo; Vespignani, Alessandro (2000-11)
Article
Accés obertWe perform large-scale simulations of directed sandpile models with both deterministic and stochastic toppling rules. Our results show the existence of two distinct universality classes. We also provide numerical simulations ... -
Critical load and congestion instabilities in scale-free networks
Moreno, Y; Pastor Satorras, Romualdo; Vázquez, A; Vespignani, Alessandro (2003-02-14)
Article
Accés obert -
Cumulative merging percolation and the epidemic transition of the susceptible-infected-susceptible model in networks
Castellano, Claudio; Pastor Satorras, Romualdo (2020-03-24)
Article
Accés obertWe consider cumulative merging percolation (CMP), a long-range percolation process describing the iterative merging of clusters in networks, depending on their mass and mutual distance. For a specific class of CMP processes, ... -
Cumulative merging percolation: a long-range percolation process in networks
Pastor Satorras, Romualdo; Castellano, Claudio (American Institute of Physics (AIP), 2022-05-17)
Article
Accés obertPercolation on networks is a common framework to model a wide range of processes, from cascading failures to epidemic spreading. Standard percolation assumes short-range interactions, implying that nodes can merge into ... -
Cut-offs and finite size effects in scale-free networks
Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (Springer, 2004-03-01)
Article
Accés obertWe analyze the degree distribution’s cut-off in finite size scale-free networks. We show that the cut-off behavior with the number of vertices N is ruled by the topological constraints induced by the connectivity structure ... -
Diffusion-annihilation processes in complex networks
Catanzaro, M; Boguña Espinal, Marian; Pastor Satorras, Romualdo (2005-05-10)
Article
Accés obertWe present a detailed analytical study of the A+A¿/0 diffusion-annihilation process in complex networks. By means of microscopic arguments, we derive a set of rate equations for the density of A particles in vertices of a ... -
Dipolar interactions induced order in assemblies of magnetic particles
Pastor Satorras, Romualdo; Rubí Capaceti, José Miguel (2000-10-27)
Article
Accés obertWe discuss the appearance of ordered structures in assemblies of magnetic particles. The phenomenon occurs when dipolar interactions and the thermal motion of the particles compete, and is mediated by screening and excluded ... -
Distinct types of eigenvector localization in networks
Pastor Satorras, Romualdo; Castellano, Claudio (Macmillan Publishers, 2016-01-12)
Article
Accés obertThe spectral properties of the adjacency matrix provide a trove of information about the structure and function of complex networks. In particular, the largest eigenvalue and its associated principal eigenvector are crucial ... -
Dynamical and correlation properties of the Internet
Pastor Satorras, Romualdo; Vázquez, A; Vespignani, Alessandro (American Institute of Physics (AIP), 2001-11)
Article
Accés obertThe description of the Internet topology is an important open problem, recently tackled with the introduction of scale-free networks. We focus on the topological and dynamical properties of real Internet maps in a three-year ... -
Dynamical patterns of epidemic outbreaks in complex heterogeneous networks
Barthelemy, M; Barrat, A; Pastor Satorras, Romualdo; Vespignani, Alessandro (2005-03-10)
Article
Accés obertWe present a thorough inspection of the dynamical behavior of epidemic phenomena in populations with complex and heterogeneous connectivity patterns. We show that the growth of the epidemic prevalence is virtually instantaneous ... -
Effect of risk perception on epidemic spreading in temporal networks
Moinet, Antoine; Pastor Satorras, Romualdo; Barrat, Alain (American Chemical Society (ACS), 2018-01-31)
Article
Accés obertMany progresses in the understanding of epidemic spreading models have been obtained thanks to numerous modeling efforts and analytical and numerical studies, considering host populations with very different structures and ... -
Effects of heterogeneous social interactions on flocking dynamics
Miguel Lopez, M. Del Carmen; Parley, Jack Thomas; Pastor Satorras, Romualdo (2018-02-08)
Article
Accés obertSocial relationships characterize the interactions that occur within social species and may have an important impact on collective animal motion. Here, we consider a variation of the standard Vicsek model for collective ... -
Effects of local population structure in a reaction-diffusion model of a contact process on metapopulation networks
de Souza Mata, Angelica; Ferreira, Silvio C.; Pastor Satorras, Romualdo (2013-10-30)
Article
Accés obertWe investigate the effects of local population structure in reaction-diffusion processes representing a contact process (CP) on metapopulations represented as complex networks. Considering a model in which the nodes of a ... -
Effects of mobility on ordering dynamics
Baronchelli, Andrea; Pastor Satorras, Romualdo (2009-11)
Article
Accés restringit per política de l'editorialModels of ordering dynamics allow us to understand natural systems in which an initially disordered population homogenizes some traits via local interactions. The simplest of these models, with wide applications ranging ... -
Effects of temporal correlations in social multiplex networks
Starnini, Michele; Baronchelli, Andrea; Pastor Satorras, Romualdo (Macmillan Publishers, 2017-08-17)
Article
Accés obertMulti-layered networks represent a major advance in the description of natural complex systems, and their study has shed light on new physical phenomena. Despite its importance, however, the role of the temporal dimension ... -
Eigenvector localization in real networks and its implications for epidemic spreading
Pastor Satorras, Romualdo; Castellano, Claudio (2018-02-10)
Article
Accés obertThe spectral properties of the adjacency matrix, in particular its largest eigenvalue and the associated principal eigenvector, dominate many structural and dynamical properties of complex networks. Here we focus on the ... -
Entropy of form and hierarchic organization
Wagensberg Lubinski, Jorge; Pastor Satorras, Romualdo (1992)
Capítol de llibre
Accés restringit per decisió de l'autorThe use of the Theory of Information as a mathematical tool for the understanding of complex systems allows the application of the MaxEnt Principle as a criterion for the prediction of the final stationary states. The ...