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Last name: VERDIÈRE
First name: Nathalie
International audience
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In a world the more and more affected by sudden, unpredictable natural and/or industrial disasters, with few or without warning signs, it is essential to understand, analyze and control population behaviors during such events. Our objective is to model and investigate the actions that can be deployed by operational staff during catastrophic...
International audience
In this paper, we investigate the calibration of a mathematical model describing different behaviors occurring during a natural, a societal, or a technological catastrophe. This model was developed in collaboration with geographers and psychologists. To collect information on the level of stress, psychologists of the LPPL laboratory of Nantes...
During disasters, people, confronted by life-threatening situations, deal with high levels of stress. While some groups of individuals will be able to cope and adopt thoughtful responses, others will experience acute stress reactions that will disrupt their psychological and physiological functioning leading to irrational responses such as...
International audience
In this paper, we introduce a new approach for modeling the human collective behaviors in the specific scenario of a sudden catastrophe, this catastrophe can be natural (i.e. earthquake, tsunami) or technological (nuclear event). The novelty of our work is to propose a mathematical model taking into account different concurrent behaviors in...
La prevención del riesgo de desastre se ha convertido en los últimos 30 años en un desafío social de gran relevancia en los países desarrollados, debido principalmente al aumento de las pérdidas financieras, la distribución desigual de las pérdidas humanas a escala planetaria y una mediatización "catastrófica" de cualquier evento. Para reducir...
Over the last thirty years, the prevention of risks and disasters has become a major issue for societies in developed countries. These concerns have to be linked with important financial losses, the unequal repartition of global casualties and a wide media coverage of all catastrophic events. Our societies, independently of their development...
The aim of this paper is to present some mathematical results concerning the PCR system (Panic-Control-Reflex), which is a model for human behaviors during catastrophic events. This model has been proposed to better understand and predict human reactions of individuals facing a brutal catastrophe, in a context of an established increase of...
One of the major challenges today is to better understand and anticipate both individual and collective human behaviors face to threats and disasters, whatever their causes. This anticipation is the critical point for populations and operational services in charge of managing the crisis, since it helps ensure populations' safety and keep the...
In this paper, our aim is to study the control of panic behavior in a non-identical network coupled with a model for human behaviors during catastrophic events, and to establish the link between control and synchronization of the network. We show how to model the domino effect in the case of a succession of disasters and exhibit a Hopf...
International audience
Faced with an ongoing or imminent danger, crisis managers must do their utmost to protect the exposed population and limit the extent of the disaster. More than during the pre- and post-disaster phases, time is of the essence. This temporal specificity of the disaster is essential compared to the risk. It requires a perfect coordination and a...
International audience
This chapter proposes to generalize to a geographical context an innovative SIR-based model describing human collective behaviors in situations of disasters. The novelty of this work is to adopt a complex network approach in order to model the influence of the space on the transitions among one behavior and the others. This network model will...
L'objectif de ce Séminaire Pluridisciplinaire, organisé par l'Axe Santé du CIST était de réunir autour de 3 notions pertinentes à l'heure actuelle en matière de sciences territoriales, des disciplines aussi diverses que la géographie, la génétique, ou bien encore la physique ou l'astrophysique, afin de voir sous quel angle d'approche ces...
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In a world more and more affected by natural and/or industrial disasters, it is essential to understand, analyze and control human behavior during such events. The work presented in this article is one of the results of a transdisciplinary collaboration between geographers, psychologists, mathematicians, computer scientists, operational staff...
In a world more and more affected by natural and/or industrial disasters, it is essential to understand, analyze and control human behavior during such events. The work presented in this article is one of the results of a transdisciplinary collaboration between geographers, psychologists, mathematicians, computer scientists, operational staff...
International audience
La recherche Com2SiCa dans laquelle s'inscrit cet article vise les objectifs suivants : d'une part appréhender la diversité des comportements humains et des possibles changements d'états pouvant se produire lors d'une catastrophe majeure, soudaine, rapide, avec peu ou sans signe précurseur ; d'autre part analyser les trajectoires de déplacement...