Urban and transport planners need to assess the stressful conditions experienced by cyclists, considering that highly stressful situations can discourage people from cycling as a transport mode. Therefore, this study has two objectives: (1) to present a method for monitoring stress and other environmental factors along cycling routes using smart sensors; and (2) to analyze the influence of noise, vibration, presence of cycle paths, and the period of the day on stress experienced by cyclists. Data were collected in the city of São Carlos, Brazil, using stress and noise sensors, accelerometers, and Global Positioning System (GPS). Primarily, heat maps generated from the data made it possible to identify critical points of stress along the routes. In addition, the results of a logistic regression model were analyzed to identify the influence of the studied variables on stress. Although high levels of noise increased the odds of experiencing stress by 4%, very uncomfortable vibrations increased the odds by 14%, and the presence of cycle paths reduced the odds by 8%, an analysis of p-values and odds ratio confidence intervals shows, with a 95% confidence level, that only the period of the day influenced stress, as confirmed by the data. In this case, the odds of having stress increased by 24% in the afternoon rush hour compared to the morning rush hour.
A Deus pela força espiritual que me proporcionou nesta etapa de minha vida Ao povo brasileiro que com seu trabalho fez possível o sonho de cursar este programa de mestrado nesta grande universidade pública. À MSc. Maria Mercedes Gamboa Medina pelas inúmeras contribuições e discussões que tanto aportaram neste trabalho. Ao Professor Dr. Adalberto Leandro Faxina pela amizade, confiança, dedicação, ensinamentos e a paciência que tanto contribuíram ao desenvolvimento desta pesquisa. Aos todos os Professores do Departamento de Engenharia de Transportes pelo acolhimento e ensinamentos, especialmente aos professores Jose Leomar Fernandes Junior e ao Professor Antonio Nelson Rodrigues pela atenção que me brindaram tanto no intercâmbio quanto na etapa de mestrado. À Professora Dra. Cassie Hintz da Universidade de Carolina do Norte (EUA) e ao Professor Dr. Hussain Bahia da universidade de Wisconsin (EUA), pela colaboração e comentários. Aos meus pais Jose Yesid Mahecha Aguirre e Enid Nuñez Torres e aos meus irmãos Alexander, Andersson e Miladis pelo apoio. Aos funcionários do Departamento de Engenharia de Transportes da EESC-USP pela colaboração. Aos colegas do Departamento de Engenharia de Transporte pelos momentos compartilhados. Ao colega MSc. Matheus David Inocente Domingos pela colaboração no desenvolvimento desta pesquisa. Ao colega MSc. Fernando Hirose pela revisão do documento. A meu amigo Fernando David Leite pelo acolhimento na minha chegada no Brasil RESUMO NUÑEZ, J. Y. M. Caracterização à fadiga de ligantes asfálticos modificados envelhecidos a curto e longo prazo. 2013. Dissertação (Mestrado)
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