143 research outputs found

    The SEIQS stochastic epidemic model with external source of infection

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    This paper deals with a stochastic epidemic model for computer viruses with latent and quarantine periods, and two sources of infection: internal and external. All sojourn times are considered random variables which are assumed to be independent and exponentially distributed. For this model extinction and hazard times are analyzed, giving results for their Laplace transforms and moments. The transient behavior is considered by studying the number of times that computers are susceptible, exposed, infectious and quarantined during a period of time (0, t] and results for their joint and marginal distributions, moments and cross moments are presented. In order to give light this analysis, some numerical examples are showed

    Philanthropy in a Changing Society: Achieving Effectiveness Through Diversity

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    Analyzes diversity programs funded by foundations since the early 1990s, both in personnel and in giving, with a focus on racial/ethnic diversity. Includes a review of progress within foundations, a summary of programs and tools, and recommendations

    Extreme values in SIR epidemic models with two strains and cross-immunity

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    The paper explores the dynamics of extreme values in an SIR (susceptible → infectious → removed) epidemic model with two strains of a disease. The strains are assumed to be perfectly distinguishable, instantly diagnosed and each strain of the disease confers immunity against the second strain, thus showing total cross-immunity. The aim is to derive the joint probability distribution of the maximum number of individuals simultaneously infected during an outbreak and the time to reach such a maximum number for the first time. Specifically, this distribution is analyzed by distinguishing between a global outbreak and the local outbreaks, which are linked to the extinction of the disease and the extinction of particular strains of the disease, respectively. Based on the mass function of the maximum number of individuals simultaneously infected during the outbreak, we also present an iterative procedure for computing the final size of the epidemic. For illustrative purposes, the twostrain SIR-model with cross-immunity is applied to the study of the spread of antibiotic-sensitive and antibiotic-resistant bacterial strains within a hospital ward

    Desenvolvimento de Bolsas Femininas Aplicando a Tecnologia de Impressão 3D

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    TCC(graduação) - Universidade Federal de Santa Catarina. Centro de Comunicação e Expressão. Design de Produto.Com a evolução tecnológica, é visto a necessidade das marcas buscarem mais inovação em seus produtos, explorando novas oportunidades de mercado. Com isso, observa-se que a impressão 3D já está presente em diversas áreas para além de apenas protótipos, como na medicina, engenharia, design e moda. O projeto teve como propósito desenvolver uma coleção-cápsula de bolsas, contendo uma bolsa pequena, média e uma grande, aplicando a tecnologia de impressão 3D, permitindo a possibilidade de customização e com valores ambientais e sociais agregados. Foi aplicada a metodologia de projeto Design Thinking, o qual divide o projeto em três fases: imersão, o qual é descoberto o problema e o aprofundamento em pesquisas e fundamentação teórica, a ideação, que dá início a geração de ideias, conceitos e testes e por fim a prototipação, com a materialização da alternativa final com a descrição do memorial. Como resultado final deste trabalho obteve-se uma coleção-cápsula de bolsas aplicando a tecnologia de impressão 3D como processo de fabricação, o material escolhido foi o TPE (termoplástico elastômero) proporcionando flexibilidade e uma sensação tátil agradável ao usuário.With technological evolution, it is seen the need for brands to seek more innovation in their products, exploring new market opportunities. With this, it is observed that 3D printing is already present in several areas beyond just prototypes, such as medicine, engineering, design and fashion. The project aimed to develop a capsule collection of bags, containing a small, medium and large bag, applying 3D printing technology, allowing the possibility of customization and with added environmental and social values. The Design Thinking project methodology was applied, which divides the project into three phases: immersion, in which the problem is discovered, and deepening in research and theoretical foundation, ideation, which begins the generation of ideas, concepts and tests and finally the prototyping, with the materialization of the final alternative with the description of the memorial. As a final result of this work, a mini collection of bags was obtained using 3D printing technology as a manufacturing process, the material chosen was TPE (thermoplastic elastomer) providing flexibility and a pleasant tactile sensation to the user

    Legal Report on the Ecosystem Approach to Fisheries in Kenya : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of Kenya

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    Legislating for the ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of the EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how the EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of Kenya with the EAF. This assessment analysed the extent to which 82 EAF legal requirements, which are considered the minimum standards in legislating for the EAF, are reflected in Kenya's policies and legislation relevant to the fisheries sector of the country and other relevant sectors (such as environment, wildlife, ecosystems, and maritime affairs). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations were made for improving the implementation of the EAF. This report was elaborated following a participatory approach with the involvement of the national competent authorities of Kenya. Drafted in July 2021, the report was submitted to the national authorities of Kenya in November 2021. The Ministry of Agriculture, Livestock, Fisheries and Cooperatives, Kenya, endorsed this EAF Legal Report in June 2022

    Legal Report on the Ecosystem Approach to Fisheries in Angola : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of Angola

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    The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of Angola with the EAF. This assessment analysed the extent to which 82 EAF legal requirements are reflected in Angola' policies and legislation relevant to the country’s fisheries sector and other sectors that interact with fisheries (such as environment, wildlife and ecosystems, maritime). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations on specific areas that need further improvement. Legislating for an ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how the EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. This report was elaborated following a participatory approach with the involvement of the national competent authorities of Angola. Drafted in July 2021, the report was submitted to the national authorities of Angola in October 2021. The Ministry of Agriculture and Fisheries of Angola endorsed this EAF Legal Report of Angola in June 2022

    Legal Report on the Ecosystem Approach to Fisheries in the Gambia : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of the Gambia

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    Legislating for the ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of the EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how the EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of the Gambia with the EAF. This assessment analysed the extent to which 82 EAF legal requirements, which are considered the minimum standards in legislating for the EAF, are reflected in the Gambia's policies and legislation relevant to the fisheries sector of the country and other relevant sectors (such as environment, wildlife, ecosystems, and maritime affairs). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations were made for improving the implementation of the EAF. This report was elaborated following a participatory approach with the involvement of the national competent authorities of the Gambia. Drafted in July 2021, the report was submitted to the national authorities of the Gambia in November 2021. The Gambia Fisheries Department endorsed this EAF Legal Report of the Gambia in April 2022

    Legal Report on the Ecosystem Approach to Fisheries in Ghana : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of Ghana

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    Legislating for an ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how an EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of Ghana with an EAF. This assessment analysed the extent to which 82 EAF legal requirements, which are considered the minimum standards in legislating for an EAF, are reflected in Ghana's policies and legislation relevant to the fisheries sector of the country and other relevant sectors (such as environment, wildlife, ecosystems, and maritime affairs). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations were made for improving the implementation of an EAF. This report was elaborated following a participatory approach with the involvement of the national competent authorities of Ghana. Drafted in July 2021, the report was submitted to the national authorities of Ghana in October 2021. The Ministry of Fisheries and Aquaculture Development of Ghana and the Fisheries Commission endorsed this EAF Legal Report of Ghana in December 2021

    Legal Report on the Ecosystem Approach to Fisheries in Guinea : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of Guinea

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    Legislating for the ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of the EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how the EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of Guinea with the EAF. This assessment analysed the extent to which 82 EAF legal requirements, which are considered the minimum standards in legislating for the EAF, are reflected in Guinea's policies and legislation relevant to the fisheries sector of the country and other relevant sectors (such as environment, wildlife, ecosystems, and maritime affairs). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations were made for improving the implementation of the EAF. This report was elaborated following a participatory approach with the involvement of the national competent authorities of Guinea. Drafted in July 2021, the report was submitted to the national authorities of Guinea in October 2021. The Centre National des Sciences Halieutiques de Boussoura (CNSHB) [National Centre of Fisheries Sciences of Boussoura] endorsed this EAF Legal Report of Guinea in July 2022

    Legal Report on the Ecosystem Approach to Fisheries in Senegal : An Analysis of the Ecosystem Approach to Fisheries in Selected National Policy and Legal Instruments of Senegal

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    Legislating for an ecosystem approach to fisheries (EAF) is complex, due to the holistic nature of EAF involving multiple factors that underpin the social, economic, environmental, and institutional aspects of fisheries sustainability. These factors include ecosystems integration, risks, inter-sectoral collaboration, research, participatory processes, monitoring, control, surveillance, and enforcement, among others. To assess how an EAF is being implemented through national policy and legal frameworks, FAO developed A diagnostic tool for implementing an ecosystem approach to fisheries through national policy and legal frameworks. The present legal report on the EAF used the diagnostic tool to assess the alignment of selected policy and legal instruments of Senegal with an EAF. This assessment analysed the extent to which 82 EAF legal requirements, which are considered the minimum standards in legislating for an EAF, are reflected in Senegal's policies and legislation relevant to the fisheries sector of the country and other relevant sectors (such as environment, wildlife, ecosystems, and maritime affairs). Based on this preliminary diagnosis, gaps were identified in the assessed instruments, and recommendations were made for improving the implementation of an EAF. This report was elaborated following a participatory approach with the involvement of the national competent authorities of Senegal. Drafted in July 2021, the report was submitted to the national authorities of Senegal in October 2021. The Directory of Maritime Fisheries, under the Ministry of Fisheries and Maritime Economy, reviewed and endorsed this EAF Legal Report of Senegal in May 2022
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