273 research outputs found

    Deployment of self-contained self rescuers in coal mines

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    Field trials at three New South Wales and one Queensland coal mines were carried out to gather data on oxygen .\u27run out times of Self-Contained Self Rescuers (SCSRs), time taken to escape from the mine, distances travelled and the average heart rate of subjects wearing SCSRs. The study has led to a method of predicting the duration of oxygen supply from a SCSR as a function of the wearer\u27s body weight. physical fitness and the prevailing environmental conditions. Escapeway design, planning for emergencies, familiarity with SCSRs and experiential escape training are critical to control panic and maxirnise the likelihood of survival of a person attempting to escape in an emergency involving fIre or explosion

    In the Interests of clients or commerce? Legal aid, supply, demand, and 'ethical indeterminacy' in criminal defence work

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    As a professional, a lawyer's first duty is to serve the client's best interests, before simple monetary gain. In criminal defence work, this duty has been questioned in the debate about the causes of growth in legal aid spending: is it driven by lawyers (suppliers) inducing unnecessary demand for their services or are they merely responding to increased demand? Research reported here found clear evidence of a change in the handling of cases in response to new payment structures, though in ways unexpected by the policy's proponents. The paper develops the concept of 'ethical indeterminacy' as a way of understanding how defence lawyers seek to reconcile the interests of commerce and clients. Ethical indeterminacy suggests that where different courses of action could each be said to benefit the client, the lawyer will tend to advise the client to decide in the lawyer's own interests. Ethical indeterminacy is mediated by a range of competing conceptions of 'quality' and 'need'. The paper goes on to question the very distinction between 'supply' and 'demand' in the provision of legal services

    Compromise-resilient anti-jamming communication in wireless sensor networks

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    Understanding IoT Security Through the Data Crystal Ball: Where We Are Now and Where We Are Going To Be

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    Inspired by the boom of the consumer IoT market, many device manufacturers, new start-up companies and technology behemoths have jumped into the space. Indeed, in a span of less than 5 years, we have experienced the manifestation of an array of solutions for the smart home, smart cities and even smart cars. Unfortunately, the exciting utility and rapid marketization of IoTs, come at the expense of privacy and security. Online and industry reports, and academic work have revealed a number of attacks on IoT systems, resulting in privacy leakage, property loss and even large-scale availability problems on some of the most influential Internet services (e.g. Netflix, Twitter). To mitigate such threats, a few new solutions have been proposed. However, it is still less clear what are the impacts they can have on the IoT ecosystem. In this work, we aim to perform a comprehensive study on reported attacks and defenses in the realm of IoTs aiming to find out what we know, where the current studies fall short and how to move forward. To this end, we first build a toolkit that searches through massive amount of online data using semantic analysis to identify over 3000 IoT-related articles (papers, reports and news). Further, by clustering such collected data using machine learning technologies, we are able to compare academic views with the findings from industry and other sources, in an attempt to understand the gaps between them, the trend of the IoT security risks and new problems that need further attention. We systemize this process, by proposing a taxonomy for the IoT ecosystem and organizing IoT security into five problem areas. We use this taxonomy as a beacon to assess each IoT work across a number of properties we define. Our assessment reveals that despite the acknowledged and growing concerns on IoT from both industry and academia, relevant security and privacy problems are far from solved. We discuss how each proposed solution can be applied to a problem area and highlight their strengths, assumptions and constraints. We stress the need for a security framework for IoT vendors and discuss the trend of shifting security liability to external or centralized entities. We also identify open research problems and provide suggestions towards a secure IoT ecosystem

    Bibliometric analysis of themes competitive intelligence, knowledge management and organizational knowledge in Institutional Repository University of Brasília

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    Trata da análise dos temas Inteligência Competitiva (IC), Gestão do Conhecimento (GC) e Conhecimento Organizacional (CO), no Repositório Institucional da Universidade da Brasília (RIUnB), que está disponível em acesso aberto desde setembro de 2008. O objetivo é verificar a produção científica sobre as áreas de pesquisa, a partir dos documentos que constam no RIUnB. O método de trabalho consistiu nos estudos bibliométricos, a fim de se inteirar sobre a produção de trabalhos referentes ao conhecimento resultante do desenvolvimento de pesquisas no âmbito institucional, para conhecer a comunidade. Os resultados apontam para um crescimento notório desses temas na ciência da informação, com perspectiva de crescimento em outras áreas: administração, engenharia elétrica, educação e gestão social e trabalho, demonstrando sua potencial interdisciplinaridade; houve maior concentração de publicação nos temas gestão do conhecimento, conhecimento organizacional e inteligência competitiva, respectivamente, e existe uma concentração dessas publicações em três pesquisadores na comunidade da Faculdade de Ciência da Informação (FCI). Conclui-se que os temas são mais frequentes na área de ciência da informação, entretanto, nota-se o seu aparecimento em outras áreas do conhecimento, na UnB: administração, engenharia elétrica, educação e gestão social e do trabalho. Esses dados podem revelar uma tendência de consolidação dos temas de pesquisa em outras áreas. ________________________________________________________________________________________ ABSTRACTThis analysis of topics Competitive Intelligence (CI), Knowledge Management (KM) and Organizational Knowledge (CO) in the Institutional Repository of the University of Brasília (RIUnB) which is available in open access since September 2008. The aim is to check the scientific literature on the research areas from the documents listed in RIUnB. The working method consisted in bibliometric studies, in order to learn about the production of works relating to knowledge resulting from research development at the institutional level to know the community. The results indicate a remarkable growth of these themes in information science, with growth prospects in other areas: administration, electrical engineering, management and education and social work, demonstrating its potential interdisciplinarity, there was a higher concentration of publishing on issues of knowledge management, organizational knowledge and competitive intelligence, respectively, and there is a concentration of such publications in three community researchers in the Faculty of Information Science (FCI). We conclude that the issues are more frequent in the area of information science, however, note its appearance in other areas of knowledge in UNB: administration, electrical engineering, education and social management and labor. These data may reveal a trend of consolidation of research topics in other areas

    The Freedoms and Capabilities of Farm Animals: How Can Organic Husbandry Fulfill Them?

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    Organic farming promotes animal husbandry practices that consider the welfare of the animals on the farm. The concept of animal welfare and the standards that should encompass this concept have in many cases been largely generalised in practice, which leaves relevant aspects of animal freedom or capabilities insufficiently addressed. This chapter puts forth the prospect that the capabilities approach offers an appropriate practical platform by which to improve welfare in farm animals by meeting a wider range of their natural needs and abilities. The capabilities approach coupled with effective health planning could foster organic husbandry towards a more acceptable production system for farmers and consumers alike
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