This research is focused on the acquisition of electronic safety equipment for mines and was conducted within the design science research (DSR) framework. Design science research ensured a directed research process was followed. The existing acquisition process and risk management methods used in the South African mining environment were analysed by means of observations, a case study, technical documentation and literature. It was evident from this analysis that a discontinuity existed between the acquisition and operations phases in terms of the management of safety risk in the acquisition of electronic safety equipment when viewed from a full life cycle perspective. This discontinuity could be addressed by defining a risk perspective on acquisition, as such a perspective would draw together engineering and mining operations in terms of safety and productivity. Research topics in this literature study include risk definition and terminologies, risk management frameworks, risk analysis methodologies and characterization, existing risk assessment tools and techniques, human error and operational modelling, and systems engineering. A literature study showed that similar challenges existed in other disciplines, with proposed solutions, but the discontinuity between the acquisition and operational phases had not been addressed. A specific approach of this research was to derive individualised research challenges aligned with the main research challenge, and then to translate each research challenge into one or more research solutions. The discontinuity between the acquisition and operational phases (engineering and mining) is addressed by an activity-based risk (ABR) acquisition process. The activity-based risk method forms part of preliminary design of a systems engineering life cycle, as this phase is of critical importance to the ABR acquisition process. The focus of the ABR acquisition process is to find the functional definition and configuration of safety equipment that addresses both safety and productivity when taking into account human performance variability. In doing so, a balance between productivity and safety is found in a relativistic sense. The effectiveness of the ABR process was verified in a real-world case study, where a safety system was analysed, fully developed, and evaluated in an operational environment to address safety risks associated with winch scraper operations. Characteristics of the ABR process were demonstrated in this case study, which also showed in detail how to develop risk- and cost-reduced equipment from a risk perspective. Feedback obtained from evaluation of the resulting safety equipment in operation was found to be consistent with the ABR model simulation results, and assisted with the validation of the winch signalling system operational model. Details of the ABR acquisition process are presented for functional analyses, simulation model construction, human performance variability modelling, risk-related performance measurement, simulation model evaluation, trade-off analyses, and physical realisation of winch signalling system artefacts. Finally, the advantages of using an ABR acquisition process are shown to underline the effectiveness of using a risk perspective for the acquisition of electronic safety equipment on South African mines. / PhD (Development and Management Engineering), North-West University, Potchefstroom Campus, 2015

This research is focused on the acquisition of electronic safety equipment for mines and was conducted within the design science research (DSR) framework. Design science research ensured a directed research process was followed. The existing acquisition process and risk management methods used in the South African mining environment were analysed by means of observations, a case study, technical documentation and literature. It was evident from this analysis that a discontinuity existed between the acquisition and operations phases in terms of the management of safety risk in the acquisition of electronic safety equipment when viewed from a full life cycle perspective. This discontinuity could be addressed by defining a risk perspective on acquisition, as such a perspective would draw together engineering and mining operations in terms of safety and productivity. Research topics in this literature study include risk definition and terminologies, risk management frameworks, risk analysis methodologies and characterization, existing risk assessment tools and techniques, human error and operational modelling, and systems engineering. A literature study showed that similar challenges existed in other disciplines, with proposed solutions, but the discontinuity between the acquisition and operational phases had not been addressed. A specific approach of this research was to derive individualised research challenges aligned with the main research challenge, and then to translate each research challenge into one or more research solutions. The discontinuity between the acquisition and operational phases (engineering and mining) is addressed by an activity-based risk (ABR) acquisition process. The activity-based risk method forms part of preliminary design of a systems engineering life cycle, as this phase is of critical importance to the ABR acquisition process. The focus of the ABR acquisition process is to find the functional definition and configuration of safety equipment that addresses both safety and productivity when taking into account human performance variability. In doing so, a balance between productivity and safety is found in a relativistic sense. The effectiveness of the ABR process was verified in a real-world case study, where a safety system was analysed, fully developed, and evaluated in an operational environment to address safety risks associated with winch scraper operations. Characteristics of the ABR process were demonstrated in this case study, which also showed in detail how to develop risk- and cost-reduced equipment from a risk perspective. Feedback obtained from evaluation of the resulting safety equipment in operation was found to be consistent with the ABR model simulation results, and assisted with the validation of the winch signalling system operational model. Details of the ABR acquisition process are presented for functional analyses, simulation model construction, human performance variability modelling, risk-related performance measurement, simulation model evaluation, trade-off analyses, and physical realisation of winch signalling system artefacts. Finally, the advantages of using an ABR acquisition process are shown to underline the effectiveness of using a risk perspective for the acquisition of electronic safety equipment on South African mines. / PhD (Development and Management Engineering), North-West University, Potchefstroom Campus, 2015

Orientador: José Augusto Chaves Guimarães / Banca: Mariângela Spotti Lopes Fugita / Banca: João Batista Ernesto de Moraes / Banca: Edinilson Donisete Machado / Banca: José Fernando Modesto da Silva / Resumo: Em uma sociedade cada vez mais globalizada e inserida digitalmente, o e-mail apresenta destaque importante, ao acelerar a comunicação entre as pessoas. No entanto, ao mesmo tempo em que a Internet revelou benefícios incomensuráveis para a sociedade tornou-se, também, um meio para a prática dos crimes informáticos e, atualmente, constata-se o emprego do e-mail como fase do iter criminis, potencializado pela ausência de uma política de prevenção. Diante desse contexto, busca-se avaliar o campo assunto do e-mail, com ênfase nas contribuições da Organização da Informação como subsídio à prevenção criminal. Com isso, objetiva-se analisar o e-mail, enquanto um documento eletrônico, visando especificar suas partições, nomeadamente a área do cabeçalho, onde consta a representação do assunto, de maneira a apontar, em uma dimensão teórica, soluções relacionadas à prevenção criminal. Por meio de uma abordagem metodológica explorativa e descritiva, parte-se de uma caracterização teórica da temática, nomeadamente na doutrina e na jurisprudência brasileira, ocasião em que são enfrentadas as dimensões informativa, temática, probatória e criminal do email, para, em seguida, realizar-se o mapeamento de e-mails recebidos pelo autor e sua esposa de modo a caracterizar como se comportam os emitentes no preenchimento do assunto, ocasião em que se combina, quanto ao tipo de dado a ser coletado e tipo de análise, quantificação com interpretação. Ao aplicarem-se as facetas concreto e processo da Teoria de Indexação Sistemática de Kaiser (1911) ao campo assunto das mensagens eletrônicas que compuseram o corpus da pesquisa, os resultados revelam indícios de fraude em e-mails cujos assuntos foram categorizados em: a) Questões/pendências judiciais e administrativas; b) Apelo financeiro (prêmios, sorteios, benefícios, etc); c) Apelo emocional; ...(Resumo completo, clicar acesso eletrônico abaixo) / Abstract: In a more and more globalized and digitalized society , e-mail represents important prominence by accelerating communication among people. However, while bringing tremendous benefits to the society, Internet has also become a means by which computer crimes have been committed and, today, E-mail is used as a phase of iter criminis , which has been potentialized due to non-existence of preventive policies at all. So in this context, we try to assess the e-mail subject-field giving emphasis to the Information Organization contributions as subsidy towards preventing crimes. In this way, our purpose is to analyze the e-mail as an electronic document aiming at specifying its parts, - mainly the headlines, in which the subject is represented-, so that we may point to, on a theoretical dimension, solutions regarding criminal prevention. By means of a methodological, exploratory and descriptive approach, we start from the subject's theoretical characterization, primarily grounded on Brazilian doctrine and jurisprudence, when e-mail's informative, thematic and probationary dimensions are faced, in order to draw a map of e-mails received by the author and his wife so as to characterize the senders' behavior when filling in the subject, for in their performance are matched quantification and interpretation with regard to the kind of datum to be collected , and the type of analysis . By applying concrete and process facets of the Theory of Systematic Indexation by Kaiser (1911) to the subject-field of electronic messages that were the investigation corpus, the results show signs of fraud on the emails , whose subjects were categorized as follow: a) judicial and administrative disputes; b) financial appeal (prizes, raffles, benefits, etc); c) emotional appeal; d) communication of electronic transaction (electronic trade); e) communication of electronic services; f) curiosity appeal... (Complete abstract click electronic access below) / Doutor

Made available in DSpace on 2014-06-11T19:32:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-07-29Bitstream added on 2014-06-13T19:03:12Z : No. of bitstreams: 1 furlanetoneto_m_dr_mar.pdf: 1796012 bytes, checksum: 865e52ab7d190c4e8c70356423defeb4 (MD5) / Universidade Estadual Paulista (UNESP) / Em uma sociedade cada vez mais globalizada e inserida digitalmente, o e-mail apresenta destaque importante, ao acelerar a comunicação entre as pessoas. No entanto, ao mesmo tempo em que a Internet revelou benefícios incomensuráveis para a sociedade tornou-se, também, um meio para a prática dos crimes informáticos e, atualmente, constata-se o emprego do e-mail como fase do iter criminis, potencializado pela ausência de uma política de prevenção. Diante desse contexto, busca-se avaliar o campo assunto do e-mail, com ênfase nas contribuições da Organização da Informação como subsídio à prevenção criminal. Com isso, objetiva-se analisar o e-mail, enquanto um documento eletrônico, visando especificar suas partições, nomeadamente a área do cabeçalho, onde consta a representação do assunto, de maneira a apontar, em uma dimensão teórica, soluções relacionadas à prevenção criminal. Por meio de uma abordagem metodológica explorativa e descritiva, parte-se de uma caracterização teórica da temática, nomeadamente na doutrina e na jurisprudência brasileira, ocasião em que são enfrentadas as dimensões informativa, temática, probatória e criminal do email, para, em seguida, realizar-se o mapeamento de e-mails recebidos pelo autor e sua esposa de modo a caracterizar como se comportam os emitentes no preenchimento do assunto, ocasião em que se combina, quanto ao tipo de dado a ser coletado e tipo de análise, quantificação com interpretação. Ao aplicarem-se as facetas concreto e processo da Teoria de Indexação Sistemática de Kaiser (1911) ao campo assunto das mensagens eletrônicas que compuseram o corpus da pesquisa, os resultados revelam indícios de fraude em e-mails cujos assuntos foram categorizados em: a) Questões/pendências judiciais e administrativas; b) Apelo financeiro (prêmios, sorteios, benefícios, etc); c) Apelo emocional;... / In a more and more globalized and digitalized society , e-mail represents important prominence by accelerating communication among people. However, while bringing tremendous benefits to the society, Internet has also become a means by which computer crimes have been committed and, today, E-mail is used as a phase of iter criminis , which has been potentialized due to non-existence of preventive policies at all. So in this context, we try to assess the e-mail subject-field giving emphasis to the Information Organization contributions as subsidy towards preventing crimes. In this way, our purpose is to analyze the e-mail as an electronic document aiming at specifying its parts, - mainly the headlines, in which the subject is represented-, so that we may point to, on a theoretical dimension, solutions regarding criminal prevention. By means of a methodological, exploratory and descriptive approach, we start from the subject’s theoretical characterization, primarily grounded on Brazilian doctrine and jurisprudence, when e-mail’s informative, thematic and probationary dimensions are faced, in order to draw a map of e-mails received by the author and his wife so as to characterize the senders’ behavior when filling in the subject, for in their performance are matched quantification and interpretation with regard to the kind of datum to be collected , and the type of analysis . By applying concrete and process facets of the Theory of Systematic Indexation by Kaiser (1911) to the subject-field of electronic messages that were the investigation corpus, the results show signs of fraud on the emails , whose subjects were categorized as follow: a) judicial and administrative disputes; b) financial appeal (prizes, raffles, benefits, etc); c) emotional appeal; d) communication of electronic transaction (electronic trade); e) communication of electronic services; f) curiosity appeal... (Complete abstract click electronic access below)