Thesis PlanB (M.S.)--University of Wisconsin--Stout, 2008. / Includes bibliographical references.

Thesis (Ph. D.)--University of Hong Kong, 1995. / Includes bibliographical references.

Orientadores: Roberto Funes Abrahão, Mauro Jose Andrade Tereso / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola / Made available in DSpace on 2018-08-11T08:25:05Z (GMT). No. of bitstreams: 1 Martins_MarcoAntonio_M.pdf: 27706944 bytes, checksum: 0bf278766f6564203372174d036732ec (MD5) Previous issue date: 2007 / Resumo: Esta pesquisa teve como objetivo principal a identificação dos fatores de risco de acidentes laborais em unidades de beneficiamento de tomate (UB). Realizou-se um estudo piloto em uma UB com a aplicação parcial do método da análise ergonômica do trabalho (AET). Em seis UB da região de Campinas foram feitas entrevistas abertas e semi-estruturadas, registros por meio de filmagem e fotos, observações diretas e sistemáticas de tarefas e medições de variáveis ambientais. A aplicação da AET permitiu a compreensão das dificuldades dos trabalhadores, relativas a aspectos de segurança laboral, fundamentado nas Normas Regulamentadoras (NR) e na Norma Brasileira 5413 (NBR). Os riscos foram classificados em físicos, químicos, biológicos, ergonômicos e de acidentes. Para cada risco identificado, foram apresentadas possíveis conseqüências e sugestões. Como produto deste trabalho, foi construída uma lista de verificação (checklist) detalhada, com várias questões objetivas, relativas aos aspectos de segurança do trabalho em unidades de beneficiamento do tomate / Abstract: This research's main objective was the identification of the risk factors of labour (work-related) accidents in tomato processing unities (UB). A pilot study was carried out in a UB, where the Ergonomic Work Analysis (EWA) method was partially applied. Open and semi-structured interviews, photografic and filmed registers, direct observations and systematic observations of tasks had been carried through in six Campinas region's UB. The EWA application allowed the understanding of the workers' difficulties, relative to aspects of workplace safety, analysed on the grounds of Labour Laws (NR) and Brazilian Standard 5413 (NBR). The risks were classified in Physical, Chemical, Biological, Ergonomic and of Accident. For each identified risk, were presented the possible consequences and suggestions. As a product of this work, it was built a detailed checklist, containing many objective questions, relative to the aspects of workplace safety in tomato processing unities / Mestrado / Planejamento e Desenvolvimento Rural Sustentável / Mestre em Engenharia Agrícola

Student Number: 0420801P Master of Science in Engineering. Faculty of Engineering and the Built Environment / Underground observations at a coal mine indicated failure of the immediate roof above the bords while pillars were observed to be intact. To determine the underlying causes of roof failures, careful observations and photographic recording of occurrences of roof failures have been made. Rock samples of the immediate shale roof were collected for laboratory testing to determine the rock strength and deformation properties. Numerical simulations were carried out to analyse stress and strain distributions and also to attempt to explain the guttering process. Mapping of roof failures showed that these took place mainly towards the centre of the roadways. The roof failures, termed “roof guttering”, were observed to occur violently and with little warning. Occurrence of roof guttering had a negative impact on production. Some panels are abandoned, production times have increased and safety of workers is compromised. The mine authorities initially thought that roof guttering was caused by shear failure of the rock mass. Roof bolts are therefore used as a means of primary support. No improvements have been observed. Increasing the size of pillars has not solved the problem either. It has only increased the amount of coal left in the pillars without any improvements in reducing roof failures. Stress measurement results carried out in 2001 showed that high horizontal stresses exist at the mine. The immediate shale roof was observed to be weak. Laboratory testing showed that the shale rock is transversely isotropic. Numerical modelling results indicated that there are insignificant stress concentrations towards the centre of the roadway using the elastic and transversely isotropic elastic models. Stress concentrations were predicted at the roof-pillar contact area. It is therefore expected that failure should initiate and occur at the roof-pillar contact area. The Mohr-Coulomb and Mohr-Coulomb strain softening models predicted shear failure at the roof-pillar contact area. The two models over predicted the depth and under predicted the width of failures. The extension strain criterion predicted correctly the depth and width of failures although the failures were predicted at the roof-pillar contact area while the observations indicated failure mainly towards the centre of the roads. Initiation of failure was predicted ahead of the coal face at the centre of the road position using the extension strain criterion. Although none of the constitutive behaviours predicted correctly the observed underground failures the extension strain criterion has shown the best agreement. Guttering that occurred at the roof-pillar contact was modelled successfully using the extension strain criterion. The extension strain criterion predicted initiation of failure ahead of the coal face at the road centre position. It is possible that fracture initiation could be taking place in this location ahead of the coal face, and, on blasting the rock that has been fractured falls forming a gutter at the centre of the road.

Orientador: Jorge Luiz Alves Trabanco / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo / Made available in DSpace on 2018-08-14T15:09:12Z (GMT). No. of bitstreams: 1 Silva_AndersonPereirada_M.pdf: 4388966 bytes, checksum: 8a2adb482cff8945f6f6f3728bf42042 (MD5) Previous issue date: 2009 / Resumo: Administradores públicos e privados necessitam de informações que os auxiliem no gerenciamento e tomada de decisões quanto à prevenção de acidentes. Acidentes de trabalho e de trânsito são grandes problemas de serem administrados, pois os métodos existentes muitas vezes não conseguem trazer resultados com rapidez para auxiliar na tomada de decisão. Este trabalho propõe uma metodologia baseada em geotecnologias e softwares livres para o desenvolvimento de um Sistema de Informação Geográfica (SIG) para gestão e prevenção de acidentes de trabalho e trânsito no campus da Universidade Estadual de Campinas - UNICAMP. As parcerias com Comissão Interna de Prevenção de Acidentes (CIPA), Prefeitura e Setor de Vigilância do campus, e Laboratório de Topografia e Geodésia da Faculdade de Engenharia Civil, Arquitetura e Urbanismo proporcionaram: a atualização da base cartográfica do campus utilizando de equipamentos GNSS (Global Navigation Satellite System); obtenção de plantas baixas; contratação de estagiários; e desenvolvimento de sistemas para georeferenciamento dos riscos em ambiente de trabalho e acidentes de trânsito para gestão e visualização na Internet através de um SIG-WEB. / Abstract: Public and private administrators need information that will help them in managing and making decisions regarding the prevention of accidents. Occupational accidents and traffic are major problems to be administered, because the existing methods often fail to bring results quickly to assist in decision making. This paper proposes a methodology based on geotechnology and free software for the development of a Geographic Information System (GIS) for management and prevention of occupational accidents and traffic on the campuses of Universidade Estadual de Campinas - UNICAMP. Partnerships with the Comissão Interna de Prevenção de Acidentes (CIPA), the Hall and Sector Monitoring of campuses, and Laboratory of Topography and Geodesy of Faculty of Civil Engineering, Architecture and Urbanism provided: the update of the cartographic basemap of the campuses using GNSS equipment (Global Navigation Satellite System), obtaining floor plans, hiring interns, and systems development for georeferencing of risks in the workplace and traffic accidents to management and viewing the Internet by WEB-GIS. / Mestrado / Transportes / Mestre em Engenharia Civil