Alani, Harith, Szomszor, Martin, Cattuto, Ciro, Van Den Broeck, Wouter, Correndo, Gianluca, Barrat, Alain
Social interactions are one of the key factors to the success of conferences and similar community gatherings. This paper describes a novel application that integrates data from the semantic web,...
Glass transition and random walks on complex energy landscapes (2009)
Baronchelli, Andrea, Barrat, Alain, Pastor-Satorras, Romualdo
We present a simple mathematical model of glassy dynamics seen as a random walk in a directed, weighted network of minima taken as a representation of the energy landscape. Our approach gives a...
Collective dynamics of social annotation (2009)
Cattuto, Ciro, Barrat, Alain, Baldassarri, Andrea, Schehr, G., Loreto, Vittorio
The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very...
Collective dynamics of social annotation (2009)
Cattuto, Ciro, Barrat, Alain, Baldassarri, Andrea, Schehr, G., Loreto, Vittorio
The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very...
Collective dynamics of social annotation (2009)
Cattuto, Ciro, Barrat, Alain, Baldassarri, Andrea, Schehr, G., Loreto, Vittorio
The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very...
Collective dynamics of social annotation (2009)
Cattuto, Ciro, Barrat, Alain, Baldassarri, Andrea, Schehr, G., Loreto, Vittorio
The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very...
Collective dynamics of social annotation (2009)
Cattuto, Ciro, Barrat, Alain, Baldassarri, Andrea, Schehr, G., Loreto, Vittorio
The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very...
Glass transition and random walks on complex energy landscapes (2009)
Baronchelli, Andrea, Barrat, Alain, Pastor-Satorras, Romualdo
We present a simple mathematical model of glassy dynamics seen as a random walk in a directed, weighted network of minima taken as a representation of the energy landscape. Our approach gives a...
Glass transition and random walks on complex energy landscapes (2009)
Baronchelli, Andrea, Barrat, Alain, Pastor-Satorras, Romualdo
We present a simple mathematical model of glassy dynamics seen as a random walk in a directed, weighted network of minima taken as a representation of the energy landscape. Our approach gives a...
Folks in folksonomies: Social link prediction from shared metadata (2009)
Schifanella, Rossano, Barrat, Alain, Cattuto, Ciro, Markines, Benjamin, Menczer, Filippo
Web 2.0 applications have attracted a considerable amount of attention because their open-ended nature allows users to create light-weight semantic scaffolding to organize and share content. To date,...
Folks in folksonomies: Social link prediction from shared metadata (2009)
Schifanella, Rossano, Barrat, Alain, Cattuto, Ciro, Markines, Benjamin, Menczer, Filippo
Web 2.0 applications have attracted a considerable amount of attention because their open-ended nature allows users to create light-weight semantic scaffolding to organize and share content. To date,...
High resolution dynamical mapping of social interactions with active RFID (2008)
Barrat, Alain, Cattuto, Ciro, Colizza, Vittoria, Pinton, Jean-Francois, Broeck, Wouter Van Den, Vespignani, Alessandro
In this paper we present an experimental framework to gather data on face-to-face social interactions between individuals, with a high spatial and temporal resolution. We use active Radio Frequency...
Renormalization flows in complex networks (2008)
Radicchi, Filippo, Barrat, Alain, Fortunato, Santo, Ramasco, Jose J.
Complex networks have acquired a great popularity in recent years, since the graph representation of many natural, social and technological systems is often very helpful to characterize and model...
Microdynamics in stationary complex networks (2008)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
Many complex systems, including networks, are not static but can display strong fluctuations at various time scales. Characterizing the dynamics in complex networks is thus of the utmost importance...
pas de resume
K-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biases (2008)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We consider the $k$-core decomposition of network models and Internet graphs at the autonomous system (AS) level. The $k$-core analysis allows to characterize networks beyond the degree distribution...
K-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biases (2008)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We consider the $k$-core decomposition of network models and Internet graphs at the autonomous system (AS) level. The $k$-core analysis allows to characterize networks beyond the degree distribution...
How accurate aretraceroute-like Internet mappings? (2008)
Ignacio Alvarez-hamelin, Alain Barrat, Alexei Vázquez, Ro Vespignani
Mapping the Internet generally consists in sampling the network from a limited set of sources by usingtraceroutelike probes. This methodology, akin to the merging of different spanning trees to a set...
A.: Bootstrapping communication in language games: Strategy, topology and all that (2008)
Andrea Baronchelli, Vittorio Loreto, Alain Barrat
Semiotic dynamics is a fast growing field according to which language can be seen as an evolving and self-organizing system. In this paper we present a simple multi-agent framework able to account...
Complex networks renormalization: flows and fixed points (2008)
Radicchi, Filippo, Ramasco, José Javier, Barrat, Alain, Fortunato, Santo
Recently, it has been claimed that some complex networks are self-similar under a convenient renormalization procedure. We present a general method to study renormalization flows in graphs. We find...
Vittoria Colizza, Alain Barrat, Marc Barthelemy, Alain-jacques Valleron, Ro Vespignani, Citation Colizza V, ...
funded by the European
Consensus formation on coevolving networks: groups' formation and structure (2008)
We study the effect of adaptivity on a social model of opinion dynamics and consensus formation. We analyze how the adaptivity of the network of contacts between agents to the underlying social...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
Background: The global spread of the severe acute respiratory syndrome (SARS) epidemic has clearly shown the importance of considering the long-range transportation networks in the understanding of...
Global disease spread: statistics and estimation of arrival times (2008)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
We study metapopulation models for the spread of epidemics in which different subpopulations (cities) are connected by fluxes of individuals (travelers). This framework allows to describe the spread...
Who's talking first? Consensus or lack thereof in coevolving opinion formation models (2008)
Nardini, Cecilia, Kozma, Balazs, Barrat, Alain
We investigate different opinion formation models on adaptive network topologies. Depending on the dynamical process, rewiring can either (i) lead to the elimination of interactions between agents in...
Global disease spread: statistics and estimation of arrival times (2008)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
We study metapopulation models for the spread of epidemics in which different subpopulations (cities) are connected by fluxes of individuals (travelers). This framework allows to describe the spread...
Global disease spread: statistics and estimation of arrival times (2008)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
We study metapopulation models for the spread of epidemics in which different subpopulations (cities) are connected by fluxes of individuals (travelers). This framework allows to describe the spread...
Who's talking first? Consensus or lack thereof in coevolving opinion formation models (2008)
Nardini, Cecilia, Kozma, Balazs, Barrat, Alain
We investigate different opinion formation models on adaptive network topologies. Depending on the dynamical process, rewiring can either (i) lead to the elimination of interactions between agents in...
K-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biases (2008)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We consider the $k$-core decomposition of network models and Internet graphs at the autonomous system (AS) level. The $k$-core analysis allows to characterize networks beyond the degree distribution...
K-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biases (2008)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We consider the $k$-core decomposition of network models and Internet graphs at the autonomous system (AS) level. The $k$-core analysis allows to characterize networks beyond the degree distribution...
08391 Group Summary -- The Berners-Lee Hypothesis: Power laws and Group Structure in Flickr (2008)
Baldassarri, Andrea, Barrat, Alain, Capocci, Andrea, Halpin, Harry, Lehner, Ulrike, Ramasco, Jose, ...
An intriguing hypothesis, first suggested by Tim Berners-Lee, is that the structure of online groups should conform to a power law distribution. We relate this hypothesis to earlier work around the...
Colizza, Vittoria, Barrat, Alain, Barthélemy, Marc, Vespignani, Alessandro
Abstract Background The global spread of the severe acute respiratory syndrome (SARS) epidemic has clearly shown the importance of considering the long-range transportation networks in the...
Who's talking first? Consensus or lack thereof in coevolving opinion formation models (2007)
Nardini, Cecilia, Kozma, Balazs, Barrat, Alain
We investigate different opinion formation models on adaptive network topologies. Depending on the dynamical process, rewiring can either (i) lead to the elimination of interactions between agents in...
Consensus formation on adaptive networks (2007)
The structure of a network can significantly influence the properties of the dynamical processes which take place on them. While many studies have been devoted to this influence, much less attention...
Consensus formation on adaptive networks (2007)
The structure of a network can significantly influence the properties of the dynamical processes which take place on them. While many studies have been devoted to this influence, much less attention...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Valleron, Alain-Jacques, Vespignani, Alessandro
We present a study of the worldwide spread of a pandemic influenza and its possible containment at a global level taking into account all available information on air travel. We studied a...
Arrival Time Statistics in Global Disease Spread (2007)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
Metapopulation models describing cities with different populations coupled by the travel of individuals are of great importance in the understanding of disease spread on a large scale. An important...
What is the real size of a sampled network? The case of the Internet (2007)
Viger, Fabien, Barrat, Alain, Dall'Asta, Luca, Zhang, Cun-Hui, Kolaczyk, Eric D.
Most data concerning the topology of complex networks are the result of mapping projects which bear intrinsic limitations and cannot give access to complete, unbiased datasets. A particularly...
What is the real size of a sampled network? The case of the Internet (2007)
Viger, Fabien, Barrat, Alain, Dall'Asta, Luca, Zhang, Cun-Hui, Kolaczyk, Eric D.
Most data concerning the topology of complex networks are the result of mapping projects which bear intrinsic limitations and cannot give access to complete, unbiased datasets. A particularly...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Valleron, Alain-Jacques, Vespignani, Alessandro
We present a study of the worldwide spread of a pandemic influenza and its possible containment at a global level taking into account all available information on air travel. We studied a...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Valleron, Alain-Jacques, Vespignani, Alessandro
We present a study of the worldwide spread of a pandemic influenza and its possible containment at a global level taking into account all available information on air travel. We studied a...
Quasi-elastic solutions to the nonlinear Boltzmann equation for dissipative gases (2007)
Barrat, Alain, Trizac, E., Ernst, M. H.
The solutions of the one-dimensional homogeneous nonlinear Boltzmann equation are studied in the QE-limit (Quasi-Elastic; infinitesimal dissipation) by a combination of analytical and numerical...
Quasi-elastic solutions to the nonlinear Boltzmann equation for dissipative gases (2007)
Barrat, Alain, Trizac, E., Ernst, M. H.
The solutions of the one-dimensional homogeneous nonlinear Boltzmann equation are studied in the QE-limit (Quasi-Elastic; infinitesimal dissipation) by a combination of analytical and numerical...
Vittoria Colizza, Alain Barrat, Marc Barthelemy, Alain-Jacques Valleron, Alessandro Vespignani
BackgroundThe highly pathogenic H5N1 avian influenza virus, which is now widespread in Southeast Asia and which diffused recently in some areas of the Balkans region and Western Europe, has raised a...
Quasi-elastic solutions to the nonlinear Boltzmann equation for dissipative gases (2007)
Barrat, Alain, Trizac, E., Ernst, M. H.
The solutions of the one-dimensional homogeneous nonlinear Boltzmann equation are studied in the QE-limit (Quasi-Elastic; infinitesimal dissipation) by a combination of analytical and numerical...
Arrival Time Statistics in Global Disease Spread (2007)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
Metapopulation models describing cities with different populations coupled by the travel of individuals are of great importance in the understanding of disease spread on a large scale. An important...
Agreement dynamics on interaction networks with diverse topologies (2007)
Barrat, Alain, Baronchelli, Andrea, Dall'Asta, Luca, Loreto, Vittorio
We review the behavior of a recently introduced model of agreement dynamics, called the Naming Game. This model describes the self-organized emergence of linguistic conventions and the establishment...
The role of geography and traffic in the structure of complex networks (2007)
Barthelemy, Marc, Barrat, Alain, Vespignani, Alessandro
We report a study of the correlations among topological, weighted and spatial properties of large infrastructure networks. We review the empirical results obtained for the air transportation...
Arrival Time Statistics in Global Disease Spread (2007)
Gautreau, Aurelien, Barrat, Alain, Barthelemy, Marc
Metapopulation models describing cities with different populations coupled by the travel of individuals are of great importance in the understanding of disease spread on a large scale. An important...
Agreement dynamics on interaction networks with diverse topologies (2007)
Barrat, Alain, Baronchelli, Andrea, Dall'Asta, Luca, Loreto, Vittorio
We review the behavior of a recently introduced model of agreement dynamics, called the Naming Game. This model describes the self-organized emergence of linguistic conventions and the establishment...
The role of geography and traffic in the structure of complex networks (2007)
Barthelemy, Marc, Barrat, Alain, Vespignani, Alessandro
We report a study of the correlations among topological, weighted and spatial properties of large infrastructure networks. We review the empirical results obtained for the air transportation...
Quasi-elastic solutions to the nonlinear Boltzmann equation for dissipative gases (2007)
Barrat, Alain, Trizac, E., Ernst, M. H.
The solutions of the one-dimensional homogeneous nonlinear Boltzmann equation are studied in the QE-limit (Quasi-Elastic; infinitesimal dissipation) by a combination of analytical and numerical...
Non-equilibrium dynamics of language games on complex networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
The Naming Game is a model of non-equilibriun dynamics for the self-organized emergence of a linguistic convention or a communication system in a population of agents with pairwise local...
Non-equilibrium dynamics of language games on complex networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
The Naming Game is a model of non-equilibrium dynamics for the self-organized emergence of a linguistic convention or a communication system in a population of agents with pairwise local...
Vulnerability of weighted networks (2006)
Dall'Asta, Luca, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
In real networks complex topological features are often associated with a diversity of interactions as measured by the weights of the links. Moreover, spatial constraints may as well play an...
Agreement dynamics on small-world networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
In this paper we analyze the effect of a non-trivial topology on the dynamics of the so-called Naming Game, a recently introduced model which addresses the issue of how shared conventions emerge...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large scale heterogeneities and unbounded statistical fluctuations. These...
Vulnerability of weighted networks (2006)
Dall'Asta, Luca, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
In real networks complex topological features are often associated with a diversity of interactions as measured by the weights of the links. Moreover, spatial constraints may as well play an...
Agreement dynamics on small-world networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
In this paper we analyze the effect of a non-trivial topology on the dynamics of the so-called Naming Game, a recently introduced model which addresses the issue of how shared conventions emerge...
k-core decomposition: a tool for the visualization of large scale networks (2006)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the k-core decomposition to visualize large scale complex networks in two dimensions. This decomposition, based on a recursive pruning of the least connected vertices, allows to disentangle...
Non-equilibrium dynamics of language games on complex networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
The Naming Game is a model of non-equilibriun dynamics for the self-organized emergence of a linguistic convention or a communication system in a population of agents with pairwise local...
Vulnerability of weighted networks (2006)
Dall'Asta, Luca, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
In real networks complex topological features are often associated with a diversity of interactions as measured by the weights of the links. Moreover, spatial constraints may as well play an...
Agreement dynamics on small-world networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
In this paper we analyze the effect of a non-trivial topology on the dynamics of the so-called Naming Game, a recently introduced model which addresses the issue of how shared conventions emerge...
k-core decomposition: a tool for the visualization of large scale networks (2006)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the k-core decomposition to visualize large scale complex networks in two dimensions. This decomposition, based on a recursive pruning of the least connected vertices, allows to disentangle...
Non-equilibrium dynamics of language games on complex networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
The Naming Game is a model of non-equilibriun dynamics for the self-organized emergence of a linguistic convention or a communication system in a population of agents with pairwise local...
Vulnerability of weighted networks (2006)
Dall'Asta, Luca, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
In real networks complex topological features are often associated with a diversity of interactions as measured by the weights of the links. Moreover, spatial constraints may as well play an...
Agreement dynamics on small-world networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
In this paper we analyze the effect of a non-trivial topology on the dynamics of the so-called Naming Game, a recently introduced model which addresses the issue of how shared conventions emerge...
k-core decomposition: a tool for the visualization of large scale networks (2006)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the k-core decomposition to visualize large scale complex networks in two dimensions. This decomposition, based on a recursive pruning of the least connected vertices, allows to disentangle...
Non-equilibrium dynamics of language games on complex networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
The Naming Game is a model of non-equilibriun dynamics for the self-organized emergence of a linguistic convention or a communication system in a population of agents with pairwise local...
Vulnerability of weighted networks (2006)
Dall'Asta, Luca, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
In real networks complex topological features are often associated with a diversity of interactions as measured by the weights of the links. Moreover, spatial constraints may as well play an...
Agreement dynamics on small-world networks (2006)
Dall'Asta, Luca, Baronchelli, Andrea, Barrat, Alain, Loreto, Vittorio
In this paper we analyze the effect of a non-trivial topology on the dynamics of the so-called Naming Game, a recently introduced model which addresses the issue of how shared conventions emerge...
k-core decomposition: a tool for the visualization of large scale networks (2006)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the k-core decomposition to visualize large scale complex networks in two dimensions. This decomposition, based on a recursive pruning of the least connected vertices, allows to disentangle...
Large scale networks fingerprinting and visualization using the k-core decomposition (2006)
Alain Barrat, Alessandro Vespignani
decomposition
Strategies for fast convergence in semiotic dynamics (2005)
Baronchelli, Andrea, Dall'Asta, Luca, Barrat, Alain, Loreto, Vittorio
Semiotic dynamics is a novel field that studies how semiotic conventions spread and stabilize in a population of agents. This is a central issue both for theoretical and technological reasons since...
Dynamical patterns of epidemic outbreaks in complex heterogeneous networks (2005)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We 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...
Characterization and Modeling of weighted networks (2005)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We review the main tools which allow for the statistical characterization of weighted networks. We then present two case studies, the airline connection network and the scientific collaboration...
Velocity and hierarchical spread of epidemic outbreaks in scale-free networks (2005)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We study the effect of the connectivity pattern of complex networks on the propagation dynamics of epidemics. The growth time scale of outbreaks is inversely proportional to the network degree...
Strategies for fast convergence in semiotic dynamics (2005)
Baronchelli, Andrea, Dall'Asta, Luca, Barrat, Alain, Loreto, Vittorio
Semiotic dynamics is a novel field that studies how semiotic conventions spread and stabilize in a population of agents. This is a central issue both for theoretical and technological reasons since...
Traffic-driven model of the World Wide Web graph (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the World Wide Web graph that couples the topological growth with the traffic\'s dynamical evolution. The model is based on a simple traffic-driven dynamics and generates...
Modeling the evolution of weighted networks (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We present a general model for the growth of weighted networks in which the structural growth is coupled with the edges\' weight dynamical evolution. The model is based on a simple weight-driven...
Weighted evolving networks: coupling topology and weights dynamics (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the growth of weighted networks that couples the establishment of new edges and vertices and the weights\' dynamical evolution. The model is based on a simple weight-driven...
The architecture of complex weighted networks (2005)
Barrat, Alain, Barthelemy, Marc, Pastor-Satorras, Romualdo, Vespignani, Alessandro
Networked structures arise in a wide array of different contexts such as technological and transportation infrastructures, social phenomena, and biological systems. These highly interconnected...
Temperature probes in binary granular gases (2005)
Barrat, Alain, Loreto, Vittorio, Puglisi, Andrea
We investigate the validity of Fluctuation-Dissipation (FD) relations for a mixture of two granular gases with different physical properties (restitution coefficients or masses) subject to stochastic...
Random inelasticity and velocity fluctuations in a driven granular gas (2005)
Barrat, Alain, Trizac, Emmanuel
We analyze the deviations from Maxwell-Boltzmann statistics found in recent experiments studying velocity distributions in two-dimensional granular gases driven into a non-equilibrium stationary...
Molecular dynamics simulations of vibrated granular gases (2005)
Barrat, Alain, Trizac, Emmanuel
We present molecular dynamics simulations of mono- or bidisperse inelastic granular gases driven by vibrating walls, in two dimensions (without gravity). Because of the energy injection at the...
Fluctuation-Dissipation Ratio for Compacting Granular Media (2005)
Barrat, Alain, Colizza, Vittoria, Loreto, Vittorio
In this paper we investigate the possibility of a dynamical definition of an effective temperature for compacting granular media in the framework of the Fluctuation-Dissipation (FD) relations. We...
Real space application of the mean-field description of spin glass dynamics (2005)
Barrat, Alain, Berthier, Ludovic
The out of equilibrium dynamics of finite dimensional spin glasses is considered from a point of view going beyond the standard `mean-field theory\' versus `droplet picture\' debate of the last...
Heated granular fluids: the random restitution coefficient approach (2005)
Barrat, Alain, Trizac, Emmanuel, Fuchs, Jean-Noel
We introduce the model of inelastic hard spheres with random restitution coefficient $\\alpha$, in order to account for the fact that, in a vertically shaken granular system interacting elastically...
The effects of spatial constraints on the evolution of weighted complex networks (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
Motivated by the empirical analysis of the air transportation system, we define a network model that includes geographical attributes along with topological and weight (traffic) properties. The...
Comparison of voter and Glauber ordering dynamics on networks (2005)
Castellano, Claudio, Loreto, Vittorio, Barrat, Alain, Cecconi, Federico, Parisi, Domenico
We study numerically the ordering process of two very simple dynamical models for a two-state variable on several topologies with increasing levels of heterogeneity in the degree distribution. We...
k-core decomposition: a tool for the analysis of large scale Internet graphs (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the $k$-core decomposition, based on a recursive pruning of the least connected vertices, to study large scale Internet graphs at the Autonomous System level. This approach allows the...
k-core decomposition: a tool for the analysis of large scale Internet graphs (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the $k$-core decomposition, based on a recursive pruning of the least connected vertices, to study large scale Internet graphs at the Autonomous System level. This approach allows the...
K-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biases (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We consider the $k$-core decomposition of network models and Internet graphs at the autonomous system (AS) level. The $k$-core analysis allows to characterize networks beyond the degree distribution...
k-core decomposition: a tool for the analysis of large scale Internet graphs (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the $k$-core decomposition, based on a recursive pruning of the least connected vertices, to study large scale Internet graphs at the Autonomous System level. This approach allows the...
k-core decomposition: a tool for the analysis of large scale Internet graphs (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the $k$-core decomposition, based on a recursive pruning of the least connected vertices, to study large scale Internet graphs at the Autonomous System level. This approach allows the...
Network Inference from TraceRoute Measurements: Internet Topology `Species' (2005)
Viger, Fabien, Barrat, Alain, Dall'Asta, Luca, Zhang, Cun-Hui, Kolaczyk, Eric D.
Internet mapping projects generally consist in sampling the network from a limited set of sources by using traceroute probes. This methodology, akin to the merging of spanning trees from the...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large scale heterogeneities and unbounded statistical fluctuations. These...
Granular gases: dynamics and collective effects (2005)
Barrat, Alain, Trizac, Emmanuel, Ernst, Matthieu H.
We present a biased review of some of the most \"spectacular\" effects appearing in the dynamics of granular gases where the dissipative nature of the collisions leads to a rich phenomenology,...
k-core decomposition: a tool for the visualization of large scale networks (2005)
Alvarez-Hamelin, José Ignacio, Dall'Asta, Luca, Barrat, Alain, Vespignani, Alessandro
We use the k-core decomposition to visualize large scale complex networks in two dimensions. This decomposition, based on a recursive pruning of the least connected vertices, allows to disentangle...
The effects of spatial constraints on the evolution of weighted complex networks (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
Motivated by the empirical analysis of the air transportation system, we define a network model that includes geographical attributes along with topological and weight (traffic) properties. The...
Comparison of voter and Glauber ordering dynamics on networks (2005)
Castellano, Claudio, Loreto, Vittorio, Barrat, Alain, Cecconi, Federico, Parisi, Domenico
We study numerically the ordering process of two very simple dynamical models for a two-state variable on several topologies with increasing levels of heterogeneity in the degree distribution. We...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large scale heterogeneities and unbounded statistical fluctuations. These...
Strategies for fast convergence in semiotic dynamics (2005)
Baronchelli, Andrea, Dall'Asta, Luca, Barrat, Alain, Loreto, Vittorio
Semiotic dynamics is a novel field that studies how semiotic conventions spread and stabilize in a population of agents. This is a central issue both for theoretical and technological reasons since...
Network Inference from TraceRoute Measurements: Internet Topology `Species' (2005)
Viger, Fabien, Barrat, Alain, Dall'Asta, Luca, Zhang, Cun-Hui, Kolaczyk, Eric D.
Internet mapping projects generally consist in sampling the network from a limited set of sources by using traceroute probes. This methodology, akin to the merging of spanning trees from the...
The effects of spatial constraints on the evolution of weighted complex networks (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
Motivated by the empirical analysis of the air transportation system, we define a network model that includes geographical attributes along with topological and weight (traffic) properties. The...
Comparison of voter and Glauber ordering dynamics on networks (2005)
Castellano, Claudio, Loreto, Vittorio, Barrat, Alain, Cecconi, Federico, Parisi, Domenico
We study numerically the ordering process of two very simple dynamical models for a two-state variable on several topologies with increasing levels of heterogeneity in the degree distribution. We...
Rate equation approach for correlations in growing network models (2005)
Barrat, Alain, Pastor-Satorras, Romualdo
We propose a rate equation approach to compute two vertex correlations in scale-free growing network models based in the preferential attachment mechanism. The formalism, based on previous work of...
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large scale heterogeneities and unbounded statistical fluctuations. These...
Strategies for fast convergence in semiotic dynamics (2005)
Baronchelli, Andrea, Dall'Asta, Luca, Barrat, Alain, Loreto, Vittorio
Semiotic dynamics is a novel field that studies how semiotic conventions spread and stabilize in a population of agents. This is a central issue both for theoretical and technological reasons since...
Network Inference from TraceRoute Measurements: Internet Topology `Species' (2005)
Viger, Fabien, Barrat, Alain, Dall'Asta, Luca, Zhang, Cun-Hui, Kolaczyk, Eric D.
Internet mapping projects generally consist in sampling the network from a limited set of sources by using traceroute probes. This methodology, akin to the merging of spanning trees from the...
The effects of spatial constraints on the evolution of weighted complex networks (2005)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
Motivated by the empirical analysis of the air transportation system, we define a network model that includes geographical attributes along with topological and weight (traffic) properties. The...
Comparison of voter and Glauber ordering dynamics on networks (2005)
Castellano, Claudio, Loreto, Vittorio, Barrat, Alain, Cecconi, Federico, Parisi, Domenico
We study numerically the ordering process of two very simple dynamical models for a two-state variable on several topologies with increasing levels of heterogeneity in the degree distribution. We...
Rate equation approach for correlations in growing network models (2005)
Barrat, Alain, Pastor-Satorras, Romualdo
We propose a rate equation approach to compute two vertex correlations in scale-free growing network models based in the preferential attachment mechanism. The formalism, based on previous work of...
Rate equation approach for correlations in growing network models (2005)
Barrat, Alain, Pastor-Satorras, Romualdo
We propose a rate equation approach to compute two vertex correlations in scale-free growing network models based in the preferential attachment mechanism. The formalism, based on previous work of...
Rate equation approach for correlations in growing network models (2005)
Barrat, Alain, Pastor-Satorras, Romualdo
We propose a rate equation approach to compute two vertex correlations in scale-free growing network models based in the preferential attachment mechanism. The formalism, based on previous work of...
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Exploring networks with traceroute-like probes: theory and simulations (2004)
Dall'Asta, Luca, Alvarez-Hamelin, Ignacio, Barrat, Alain, Vazquez, Alexei, Vespignani, Alessandro
Mapping the Internet generally consists in sampling the network from a limited set of sources by using traceroute-like probes. This methodology, akin to the merging of different spanning trees to a...
Granular gases: dynamics and collective effects (2004)
Barrat, Alain, Trizac, Emmanuel, Ernst, Matthieu H.
We present a biased review of some of the most "spectacular" effects appearing in the dynamics of granular gases where the dissipative nature of the collisions leads to a rich phenomenology,...
Rate equation approach for correlations in growing network models (2004)
Barrat, Alain, Pastor-Satorras, Romualdo
We propose a rate equation approach to compute two vertex correlations in scale-free growing network models based in the preferential attachment mechanism. The formalism, based on previous work of...
Dynamical patterns of epidemic outbreaks in complex heterogeneous networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We 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...
Characterization and Modeling of weighted networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We review the main tools which allow for the statistical characterization of weighted networks. We then present two case studies, the airline connection network and the scientific collaboration...
A statistical approach to the traceroute-like exploration of networks: theory and simulations (2004)
Dall'Asta, Luca, Alvarez-Hamelin, Ignacio, Barrat, Alain, Vazquez, Alexei, Vespignani, Alessandro
Mapping the Internet generally consists in sampling the network from a limited set of sources by using "traceroute"-like probes. This methodology, akin to the merging of different spanning trees to a...
Modeling the evolution of weighted networks (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We present a general model for the growth of weighted networks in which the structural growth is coupled with the edges' weight dynamical evolution. The model is based on a simple weight-driven...
Traffic-driven model of the World Wide Web graph (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the World Wide Web graph that couples the topological growth with the traffic's dynamical evolution. The model is based on a simple traffic-driven dynamics and generates...
Thermal convection in mono-disperse and bi-disperse granular gases: A simulation study (2004)
Paolotti, Daniela, Barrat, Alain, Marconi, Umberto Marini Bettolo, Puglisi, Andrea
We present results of a simulation study of inelastic hard-disks vibrated in a vertical container. An Event-Driven Molecular Dynamics method is developed for studying the onset of convection. Varying...
Weighted evolving networks: coupling topology and weights dynamics (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the growth of weighted networks that couples the establishment of new edges and vertices and the weights' dynamical evolution. The model is based on a simple weight-driven...
Dynamical patterns of epidemic outbreaks in complex heterogeneous networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We 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...
Characterization and Modeling of weighted networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We review the main tools which allow for the statistical characterization of weighted networks. We then present two case studies, the airline connection network and the scientific collaboration...
Velocity and hierarchical spread of epidemic outbreaks in scale-free networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We study the effect of the connectivity pattern of complex networks on the propagation dynamics of epidemics. The growth time scale of outbreaks is inversely proportional to the network degree...
Traffic-driven model of the World Wide Web graph (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the World Wide Web graph that couples the topological growth with the traffic\'s dynamical evolution. The model is based on a simple traffic-driven dynamics and generates...
Modeling the evolution of weighted networks (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We present a general model for the growth of weighted networks in which the structural growth is coupled with the edges\' weight dynamical evolution. The model is based on a simple weight-driven...
Weighted evolving networks: coupling topology and weights dynamics (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the growth of weighted networks that couples the establishment of new edges and vertices and the weights\' dynamical evolution. The model is based on a simple weight-driven...
Granular gases: dynamics and collective effects (2004)
Barrat, Alain, Trizac, Emmanuel, Ernst, Matthieu H.
We present a biased review of some of the most \"spectacular\" effects appearing in the dynamics of granular gases where the dissipative nature of the collisions leads to a rich phenomenology,...
Dynamical patterns of epidemic outbreaks in complex heterogeneous networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We 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...
Characterization and Modeling of weighted networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We review the main tools which allow for the statistical characterization of weighted networks. We then present two case studies, the airline connection network and the scientific collaboration...
Velocity and hierarchical spread of epidemic outbreaks in scale-free networks (2004)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We study the effect of the connectivity pattern of complex networks on the propagation dynamics of epidemics. The growth time scale of outbreaks is inversely proportional to the network degree...
Traffic-driven model of the World Wide Web graph (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the World Wide Web graph that couples the topological growth with the traffic\'s dynamical evolution. The model is based on a simple traffic-driven dynamics and generates...
Modeling the evolution of weighted networks (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We present a general model for the growth of weighted networks in which the structural growth is coupled with the edges\' weight dynamical evolution. The model is based on a simple weight-driven...
Weighted evolving networks: coupling topology and weights dynamics (2004)
Barrat, Alain, Barthelemy, Marc, Vespignani, Alessandro
We propose a model for the growth of weighted networks that couples the establishment of new edges and vertices and the weights\' dynamical evolution. The model is based on a simple weight-driven...
Granular gases: dynamics and collective effects (2004)
Barrat, Alain, Trizac, Emmanuel, Ernst, Matthieu H.
We present a biased review of some of the most \"spectacular\" effects appearing in the dynamics of granular gases where the dissipative nature of the collisions leads to a rich phenomenology,...
Velocity and hierarchical spread of epidemic outbreaks in scale-free networks (2003)
Barthelemy, Marc, Barrat, Alain, Pastor-Satorras, Romualdo, Vespignani, Alessandro
We study the effect of the connectivity pattern of complex networks on the propagation dynamics of epidemics. The growth time scale of outbreaks is inversely proportional to the network degree...
The architecture of complex weighted networks (2003)
Barrat, Alain, Barthelemy, Marc, Pastor-Satorras, Romualdo, Vespignani, Alessandro
Networked structures arise in a wide array of different contexts such as technological and transportation infrastructures, social phenomena, and biological systems. These highly interconnected...
Temperature probes in binary granular gases (2003)
Barrat, Alain, Loreto, Vittorio, Puglisi, Andrea
We investigate the validity of Fluctuation-Dissipation (FD) relations for a mixture of two granular gases with different physical properties (restitution coefficients or masses) subject to stochastic...
The architecture of complex weighted networks (2003)
Barrat, Alain, Barthelemy, Marc, Pastor-Satorras, Romualdo, Vespignani, Alessandro
Networked structures arise in a wide array of different contexts such as technological and transportation infrastructures, social phenomena, and biological systems. These highly interconnected...
Temperature probes in binary granular gases (2003)
Barrat, Alain, Loreto, Vittorio, Puglisi, Andrea
We investigate the validity of Fluctuation-Dissipation (FD) relations for a mixture of two granular gases with different physical properties (restitution coefficients or masses) subject to stochastic...
Random inelasticity and velocity fluctuations in a driven granular gas (2003)
Barrat, Alain, Trizac, Emmanuel
We analyze the deviations from Maxwell-Boltzmann statistics found in recent experiments studying velocity distributions in two-dimensional granular gases driven into a non-equilibrium stationary...
The architecture of complex weighted networks (2003)
Barrat, Alain, Barthelemy, Marc, Pastor-Satorras, Romualdo, Vespignani, Alessandro
Networked structures arise in a wide array of different contexts such as technological and transportation infrastructures, social phenomena, and biological systems. These highly interconnected...
Temperature probes in binary granular gases (2003)
Barrat, Alain, Loreto, Vittorio, Puglisi, Andrea
We investigate the validity of Fluctuation-Dissipation (FD) relations for a mixture of two granular gases with different physical properties (restitution coefficients or masses) subject to stochastic...
Random inelasticity and velocity fluctuations in a driven granular gas (2003)
Barrat, Alain, Trizac, Emmanuel
We analyze the deviations from Maxwell-Boltzmann statistics found in recent experiments studying velocity distributions in two-dimensional granular gases driven into a non-equilibrium stationary...
Molecular dynamics simulations of vibrated granular gases (2002)
Barrat, Alain, Trizac, Emmanuel
We present molecular dynamics simulations of mono- or bidisperse inelastic granular gases driven by vibrating walls, in two dimensions (without gravity). Because of the energy injection at the...
Random inelasticity and velocity fluctuations in a driven granular gas (2002)
Barrat, Alain, Trizac, Emmanuel
We analyze the deviations from Maxwell-Boltzmann statistics found in recent experiments studying velocity distributions in two-dimensional granular gases driven into a non-equilibrium stationary...
Fluctuation-Dissipation Ratio for Compacting Granular Media (2002)
Barrat, Alain, Colizza, Vittoria, Loreto, Vittorio
In this paper we investigate the possibility of a dynamical definition of an effective temperature for compacting granular media in the framework of the Fluctuation-Dissipation (FD) relations. We...
Molecular dynamics simulations of vibrated granular gases (2002)
Barrat, Alain, Trizac, Emmanuel
We present molecular dynamics simulations of mono- or bidisperse inelastic granular gases driven by vibrating walls, in two dimensions (without gravity). Because of the energy injection at the...
Fluctuation-Dissipation Ratio for Compacting Granular Media (2002)
Barrat, Alain, Colizza, Vittoria, Loreto, Vittorio
In this paper we investigate the possibility of a dynamical definition of an effective temperature for compacting granular media in the framework of the Fluctuation-Dissipation (FD) relations. We...
Molecular dynamics simulations of vibrated granular gases (2002)
Barrat, Alain, Trizac, Emmanuel
We present molecular dynamics simulations of mono- or bidisperse inelastic granular gases driven by vibrating walls, in two dimensions (without gravity). Because of the energy injection at the...
Fluctuation-Dissipation Ratio for Compacting Granular Media (2002)
Barrat, Alain, Colizza, Vittoria, Loreto, Vittorio
In this paper we investigate the possibility of a dynamical definition of an effective temperature for compacting granular media in the framework of the Fluctuation-Dissipation (FD) relations. We...
Fluctuation-dissipation ratio for compacting granular media (2002)
Barrat, Alain, Colizza, Vittoria, Loreto, Vittorio
In this paper we investigate the possibility of a dynamical definition of an effective temperature for compacting granular media in the framework of the Fluctuation-Dissipation (FD) relations. We...
On the definition of temperature in dense granular media (2001)
Colizza, Vittoria, Barrat, Alain, Loreto, Vittorio
In this Letter we report the measurement of a pseudo-temperature for compacting granular media on the basis of the Fluctuation-Dissipation relations in the aging dynamics of a model system. From the...
Real space application of the mean-field description of spin glass dynamics (2001)
Barrat, Alain, Berthier, Ludovic
The out of equilibrium dynamics of finite dimensional spin glasses is considered from a point of view going beyond the standard `mean-field theory' versus `droplet picture' debate of the last...
Heated granular fluids: the random restitution coefficient approach (2001)
Barrat, Alain, Trizac, Emmanuel, Fuchs, Jean-Noel
We introduce the model of inelastic hard spheres with random restitution coefficient $\alpha$, in order to account for the fact that, in a vertically shaken granular system interacting elastically...
Real space application of the mean-field description of spin glass dynamics (2001)
Barrat, Alain, Berthier, Ludovic
The out of equilibrium dynamics of finite dimensional spin glasses is considered from a point of view going beyond the standard `mean-field theory\' versus `droplet picture\' debate of the last...
Heated granular fluids: the random restitution coefficient approach (2001)
Barrat, Alain, Trizac, Emmanuel, Fuchs, Jean-Noel
We introduce the model of inelastic hard spheres with random restitution coefficient $\\alpha$, in order to account for the fact that, in a vertically shaken granular system interacting elastically...
Real space application of the mean-field description of spin glass dynamics (2001)
Barrat, Alain, Berthier, Ludovic
The out of equilibrium dynamics of finite dimensional spin glasses is considered from a point of view going beyond the standard `mean-field theory\' versus `droplet picture\' debate of the last...
Heated granular fluids: the random restitution coefficient approach (2001)
Barrat, Alain, Trizac, Emmanuel, Fuchs, Jean-Noel
We introduce the model of inelastic hard spheres with random restitution coefficient $\\alpha$, in order to account for the fact that, in a vertically shaken granular system interacting elastically...
Edwards' measures: a thermodynamic construction for dense granular media and glasses (2000)
Barrat, Alain, Kurchan, Jorge, Loreto, Vittorio, Sellitto, Mauro
We present numerical support for the hypothesis that macroscopic observables of dense granular media can be evaluated from averages over typical blocked configurations: we construct the corresponding...
Edwards\' measures: a thermodynamic construction for dense granular media and glasses (2000)
Barrat, Alain, Kurchan, Jorge, Loreto, Vittorio, Sellitto, Mauro
We present numerical support for the hypothesis that macroscopic observables of dense granular media can be evaluated from averages over typical blocked configurations: we construct the corresponding...
Response properties in a model for granular matter (1999)
Barrat, Alain, Loreto, Vittorio
We investigate the response properties of granular media in the framework of the so-called {\em Random Tetris Model}. We monitor, for different driving procedures, several quantities: the evolution...
George Henry Lewes [microform] : une carrière victorienne / (1983)
Thesis (doctoral)--Université de Paris III, 1983.
Colizza, Vittoria, Barrat, Alain, Barthélemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large-scale heterogeneities and unbounded statistical fluctuations. These...
Colizza, Vittoria, Barrat, Alain, Barthélemy, Marc, Vespignani, Alessandro
The systematic study of large-scale networks has unveiled the ubiquitous presence of connectivity patterns characterized by large-scale heterogeneities and unbounded statistical fluctuations. These...
Modeling the Worldwide Spread of Pandemic Influenza: Baseline Case and Containment Interventions
Colizza, Vittoria, Barrat, Alain, Barthelemy, Marc, Valleron, Alain-Jacques, Vespignani, Alessandro
A metapopulation stochastic epidemic model for influenza shows the need to include air transportation when assessing the occurrence probability of global outbreaks. The impact of the use of antiviral...
Predictability and epidemic pathways in global outbreaks of infectious diseases: the SARS case study
Colizza, Vittoria, Barrat, Alain, Barthélemy, Marc, Vespignani, Alessandro
THE ROLE OF GEOGRAPHY AND TRAFFIC IN THE STRUCTURE OF COMPLEX NETWORKS
MARC BARTHÃLEMY, ALAIN BARRAT, ALESSANDRO VESPIGNANI
We report a study of the correlations among topological, weighted and spatial properties of large infrastructure networks. We review the empirical results obtained for the air-transportation...
INELASTIC HARD SPHERES WITH RANDOM RESTITUTION COEFFICIENT: A NEW MODEL FOR HEATED GRANULAR FLUIDS
We consider a vertically shaken granular system interacting elastically with the vibrating boundary, so that the energy injected vertically is transferred to the horizontal degrees of freedom through...