We analyze numerically macroscopic models of crowd dynamics: classical Hughes model and the second order model being an extension to pedestrian motion of the Payne-Whitham vehicular tra c model. The desired direction of motion is determined by solving an eikonal equation with density dependent running cost function standing for minimization of the travel time and avoidance of congested areas. W...

Introduction La pandémie de COVID-19 et les mesures prises par instances gouvernementales ont soulevé des inquiétudes quant à la possibilité d’une hausse mortalité suicide intoxication aux drogues ou médicaments, en raison l’exacerbation maladies mentales, problèmes économiques, changements dans l’approvisionnement capacité accéder services réduction méfaits divers autres f...

Uma apresentação da categoria weiliana obra Resumo: No presente artigo propomos uma obra, a violência pura. Para tanto, dividimos o em três seções. Na primeira, descrevemos atitude e obra. Trata-se rejeição consciente razão do indivíduo que vive sua atitude. segunda, mostramos como se dá compreensão pela filosofia weiliana. Essa só é possível emprestando à linguagem ela rejeita, filosófica. ter...

S mallpox was " the most terrible of all the ministers of death, " wrote English historian Thomas Macaulay. In the 17th century, the " small pox was always present, " unlike the plague, which visited on occasion. Before this time, the disease did not pose a serious threat to the English or other nations in Europe perhaps because, as scant available records suggest, less virulent forms of the di...

Smartphones are now a ubiquitous part of daily life for adolescents in the United Kingdom, who use their phones multitude reasons beyond calling or texting. To date, little qualitative research has been conducted with adolescent smartphone users about experiences use, particularly problematic excessive use. This study directly explored topics and etiquette 13 British aged 16–18 years across thr...

Recent research on the forecasting of violence has mostly focused predicting presence or absence conflict in a given location, while much less attention been paid to changes violence. We organized prediction competition forecast state-based both for true future and test partition. received contributions from 15 international teams. The models leverage new insight targeted problem, insisting met...

The aim of this paper is to develop a crowd motion model designed to handle highly packed situations. The model we propose rests on two principles: We first define a spontaneous velocity which corresponds to the velocity each individual would like to have in the absence of other people; The actual velocity is then computed as the projection of the spontaneous velocity onto the set of admissible...