Now showing items 1-17 of 17

    • Absence of epidemic threshold in scale-free networks with degree correlations 

      Boguña Espinal, Marian; Pastor Satorras, Romualdo; Vespignani, Alessandro (American Institute of Physics (AIP), 2003-01-15)
      Article
      Open Access
      Random scale-free networks have the peculiar property of being prone to the spreading of infections. Here we provide for the susceptible-infected-susceptible model an exact result showing that a scale-free degree distribution ...
    • Cidades em tempos de pandemia: um ensaio reflexivo 

      Merli, Giovanna Augusto; Graciano, Guilherme Silva (Centre de Politica de Sol i Valoracions, CPSV / Universitat Politècnica de Catalunya, UPC, 2021-06)
      Article
      Open Access
      Este artigo nasce da inquietude frente ao momento em que o mundo atravessa, no combate a uma pandemia de escala mundial, e busca discutir qual será seu significado para as cidades tais como as conhecemos hoje. Sobre as ...
    • Dynamical patterns of epidemic outbreaks in complex heterogeneous networks 

      Barthelemy, M; Barrat, A; Pastor Satorras, Romualdo; Vespignani, Alessandro (2005-03-10)
      Article
      Open Access
      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 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
      Open Access
      Many 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 ...
    • Epidemic dynamics and endemic states in complex networks 

      Pastor Satorras, Romualdo; Vespignani, Alessandro (2001-05-22)
      Article
      Open Access
      We study by analytical methods and large scale simulations a dynamical model for the spreading of epidemics in complex networks. In networks with exponentially bounded connectivity we recover the usual epidemic behavior ...
    • Epidemic dynamics in finite size scale-free networks 

      Pastor Satorras, Romualdo; Vespignani, Alessandro (American Institute of Physics (AIP), 2002-03)
      Article
      Open Access
      Many real networks present a bounded scale-free behavior with a connectivity cutoff due to physical constraints or a finite network size. We study epidemic dynamics in bounded scale-free networks with soft and hard ...
    • Epidemic outbreaks in complex heterogeneous networks 

      Moreno, Y; Pastor Satorras, Romualdo; Vespignani, Alessandro (Springer, 2002-04)
      Article
      Open Access
      We present a detailed analytical and numerical study for the spreading of infections with acquired immunity in complex population networks. We show that the large connectivity fluctuations usually found in these networks ...
    • Epidemic spreading in correlated complex networks 

      Boguña Espinal, Marian; Pastor Satorras, Romualdo (2002-10)
      Article
      Open Access
      We study a dynamical model of epidemic spreading on complex networks in which there are explicit correlations among the node’s connectivities. For the case of Markovian complex networks, showing only correlations between ...
    • Epidemic spreading in modular time-varying networks 

      Nadini, Matthieu; Sun, Kaiyuan; Ubaldi, Enrico; Starnini, Michele; Rizzo, Alessandro; Perra, Nicola (Nature, 2018-02-05)
      Article
      Open Access
      We investigate the effects of modular and temporal connectivity patterns on epidemic spreading. To this end, we introduce and analytically characterise a model of time-varying networks with tunable modularity. Within this ...
    • Epidemics and immunization in scale-free networks 

      Pastor Satorras, Romualdo; Vespignani, Alessandro (Wiley-VCH, 2003)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Complex interacting networks are observed in systems from such diverse areas as physics, biology, economics, ecology, and computer science. For example, economic or social interactions often organize themselves in complex ...
    • Estudi de l'impacte al transport aeri de passatgers de l'epidèmia COVID-19 

      Estrach Guerrero, Roger (Universitat Politècnica de Catalunya, 2020-06)
      Master thesis
      Restricted access - author's decision
    • Flocking-enhanced social contagion 

      Levis, Demian; Díaz Guilera, Albert; Pagonabarraga Mora, Ignacio; Starnini, Michele (American Physical Society, 2020-09-01)
      Article
      Open Access
      Background: Emergency Medical Services (EMS) plays a fundamental role in providing good quality healthcare services to citizens, as they are the first responders in distressing situations. Few studies have used available ...
    • Incidence and impact of COVID-19 in MS. A survey from a Barcelona MS Unit. 

      Sepúlveda, Maria; Llufriu, Sara; Martínez-Hernández, Eugenia; Català Sabaté, Martí; Artola, Montse; Hernando, Ana; Montejo, Carmen; Pulido-Valdeolivas, Irene; Martinez-Heras, Eloy; Guasp, Mar; Solana, Elisabeth; Llançó, Laura; Escudero, Domingo; Aldea, Marta; Prats Soler, Clara; Graus Ribas, Francesc; Blanco, Yolanda; Saiz, Albert (Lippincott Williams & Wilkins, 2021-01-27)
      Article
      Open Access
      Objective: To investigate the incidence of coronavirus disease 2019 (COVID-19) in a single-center cohort of patients with MS and to explore the contribution of their comorbidities and therapies to the outcome. Methods: ...
    • Influence of individual nodes for continuous-time susceptible-infected-susceptible dynamics on synthetic and real-world networks 

      De Bellis, Alfredo; Pastor Satorras, Romualdo; Castellano, Claudio (American Institute of Physics (AIP), 2021-07-01)
      Article
      Open Access
      In the study of epidemic dynamics a fundamental question is whether a pathogen initially affecting only one individual will give rise to a limited outbreak or to a widespread pandemic. The answer to this question crucially ...
    • Modelització d’epidèmies. Anàlisi i aportacions al cas de la COVID-19 

      Rodés Garcia, Bruno (Universitat Politècnica de Catalunya, 2020-07-13)
      Bachelor thesis
      Open Access
      L’objectiu del treball és crear un simulador d’epidèmies amb Python, que permeti predir l’evolució i la magnitud de la COVID-19, visualitzant els resultats en gràfics. Primer, s’han estudiat els models utilitzats en les ...
    • No hay juego que por bien no venga 

      Barceló Garcia, Miquel (2008-06)
      Article
      Open Access
    • Velocity and hierarchical spread of epidemic outbreaks in scale-free networks 

      Barthelemy, M; Barrat, A; Pastor Satorras, Romualdo; Vespignani, Alessandro (American Institute of Physics (AIP), 2004-04-30)
      Article
      Open Access
      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 fluctuations, signaling that ...