999 resultados para Social-Spider optimization
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América Latina enfrenta problemáticas de desarrollo y salud comunes. La equidad y la superación de la pobreza son cruciales en la búsqueda de soluciones integrales y de alto impacto. El artículo analiza el concepto de capital social, su relación con salud, sus limitaciones y potencialidades, desde una perspectiva de desarrollo comunitario y promoción de salud en América Latina. También, se identifican desafíos prioritarios, como la medición y fortalecimiento del capital social. Se discute cómo y por qué el capital social pudiera ser crítico en una estrategia global de promoción de la salud, donde el empoderamiento y la participación comunitaria, el trabajo interdisciplinario e intersectorial permitirían avanzar en los objetivos de salud pública y en la concreción de un cambio social sustentable. Igualmente, se identifican algunas de las potenciales limitaciones del concepto de capital social en el contexto de promoción de la salud en América Latina.
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En 2009, el turismo fue erigido por el Gobierno portugués XVII Constitucional como una política pública, debido al programa de adopción en el turismo como un área de intervención prioritaria, teniendo en cuenta la creciente importancia del turismo en la economía nacional. El turismo es visto como un instrumento para promover el desarrollo sostenible a nivel medioambiental, económico y social, la creación de una Política Nacional de Turismo, en el que la respectiva lista de objetivos, está la promoción "del acceso general portugués los beneficios del turismo ", la realización de ese objetivo con la" promoción de proyectos de turismo social, con un enfoque particular en los segmentos juveniles, senior y familiar ".
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Copyright © 2014 Magnolia Press.
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This paper presents the foundations of an Academic Social Network (ASN) focusing the Bologna Declaration and the Bologna Process (BP) mobility issues using ontological support. An ASN will permit students to share commons academic interests, preferences and mobility paths in the European Higher Education Space (EHES). The description of the conceptual support is ontology based allowing knowledge sharing and reuse. An approach is presented by merging Academic Ontology to Support the Bologna Mobility Process with Friend of a Friend ontology. The resulting ontology supports the student mobility profile in the ASN. The strategies to make available, in the network, knowledge about mobility issues, are presented including knowledge discovery and simulation approaches to cover student's mobility scenarios for BP.
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Scientific evidence has shown an association between organochlorine compounds (OCC) exposure and human health hazards. Concerning this, OCC detection in human adipose samples has to be considered a public health priority. This study evaluated the efficacy of various solid-phase extraction (SPE) and cleanup methods for OCC determination in human adipose tissue. Octadecylsilyl endcapped (C18-E), benzenesulfonic acid modified silica cation exchanger (SA), poly (styrene-divinylbenzene (EN) and EN/RP18 SPE sorbents were evaluated. The relative sample cleanup provided by these SPE columns was evaluated using gas chromatography with electron capture detection (GC–ECD). The C18-E columns with strong homogenization were found to provide the most effective cleanup, removing the greatest amount of interfering substance, and simultaneously ensuring good analyte recoveries higher than 70%. Recoveries>70% with standard deviations (SD)<15% were obtained for all compounds under the selected conditions. Method detection limits were in the 0.003–0.009 mg/kg range. The positive samples were confirmed by gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). The highest percentage found of the OCC in real samples corresponded to HCB, o,p′-DDT and methoxychlor, which were detected in 80 and 95% of samples analyzed respectively. Copyright © 2012 John Wiley & Sons, Ltd.
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Multiclass analysis method was optimized in order to analyze pesticides traces by gas chromatography with ion-trap and tandem mass spectrometry (GC-MS/MS). The influence of some analytical parameters on pesticide signal response was explored. Five ion trap mass spectrometry (IT-MS) operating parameters, including isolation time (IT), excitation voltage (EV), excitation time (ET),maximum excitation energy or “q” value (q), and isolationmass window (IMW) were numerically tested in order to maximize the instrument analytical signal response. For this, multiple linear regression was used in data analysis to evaluate the influence of the five parameters on the analytical response in the ion trap mass spectrometer and to predict its response. The assessment of the five parameters based on the regression equations substantially increased the sensitivity of IT-MS/MS in the MS/MS mode. The results obtained show that for most of the pesticides, these parameters have a strong influence on both signal response and detection limit.Using the optimized method, a multiclass pesticide analysis was performed for 46 pesticides in a strawberry matrix. Levels higher than the limit established for strawberries by the European Union were found in some samples.
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Mestrado (PES II), Educação Pré-Escolar e Ensino do 1º Ciclo do Ensino Básico, 3 de Julho de 2014, Universidade dos Açores.
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Dissertação de Mestrado em História Insular e Atlântica (Séculos XV-XX)
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The Desertas Islands (Madeira, Portugal) are the sole home of one of the largest and rarest wolf spiderspecies, Hogna ingens (Blackwall 1857) (Araneae, Lycosidae). Despite its size, it inhabits a single valleyin the North of the Deserta Grande Island, Vale da Castanheira, currently invaded by the herb Phalarisaquatica. This invasive species competes with the native flora and was subject to several eradicationexperiments, namely through fire and chemicals. The objectives of this work were to: (1) estimate thecurrent distribution and abundance of H. ingens and respective trends; (2) evaluate the impact of theinvasive plant and eradication methods on the spider population; (3) suggest future measures for therecovery of the species; and (4) evaluate its conservation status according to the IUCN criteria. The current distribution of H. ingens covers 23 ha, a recent reduction from its original 83 ha, correspond-ing to the entire Vale da Castanheira. A total of 4447 and 4086 adults and 71,832 and 24,635 juvenileswere estimated to live in the valley during 2011 and 2012, respectively. We found a significant negativeimpact of P. aquatica cover on the presence and abundance of H. ingens and that chemical treatmentspecifically directed towards the invasive plant species may be the only way to effectively recover thespider's habitat. We suggest (1) regular monitoring; (2) extend chemical treatments; (3) ex-situ conserva-tion with future reintroduction of adults. Based on the current area of occupancy (AOO) of H. ingens and itsrecent decline in both AOO and number of individuals, it was recently classified as Critically Endangeredby IUCN and we suggest its urgent inclusion in the Habitats Directive species lists.
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Dissertação de Mestrado em Gestão de Empresas/MBA.
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A responsabilidade social das empresas, especificamente no que toca às questões ambientais tem vindo a assumir uma preocupação crescente e isso reflecte-se na Contabilidade. De facto, compete à Contabilidade, como elo de ligação entre a comunidade e as empresas, identificar e medir a contribuição social da empresa, que inclui não só os custos e os proveitos sociais fáceis de identificar e medir, mas também aqueles que surgem das externalidades que afectam os diferentes grupos sociais. Com este trabalho analisa-se a responsabilidade social das empresas, tendo particularmente em conta o caso ambiental. Adicionalmente, examina-se o papel da Contabilidade num contexto de responsabilidade social tendo em conta a normalização nacional, regional e internacional existente.
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Dissertação apresentada à Escola Superior de Comunicação Social como parte dos requisitos para obtenção de grau de mestre em Jornalismo.
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Dissertação de Mestrado em Gestão de Empresas/MBA.
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OBJETIVO: Evaluar la vulnerabilidad por factores de riesgo al VIH/SIDA en mujeres en riesgo social. MÉTODOS: Estudio llevado a cabo con 178 mujeres dueñas de casa (n=101) y trabajadoras del sector salud (n=77) de Antofagasta, Chile, en 2006-2007. Las dueñas de casa fueron consideradas en riesgo social. La vulnerabilidad al VIH fue calculada por medio de una escala que agrupó 21 reactivos en tres dimensiones: roles de género, comunicación con la pareja y actitud ante al uso del preservativo. Para determinar el peso relativo de cada una de las dimensiones en la vulnerabilidad total se realizó un análisis de regresión múltiple utilizando el puntaje total de la escala como variable dependiente y cada una de las tres dimensiones como variable independiente. RESULTADOS: En el grupo general, la dimensión con peso relativo mayor fue la dimensión actitud frente al uso del preservativo (0.542), seguida de relación de pareja (0.453) y roles de género (0.379). Para mujeres dueñas de casa, se observó una variación: relación de pareja (0.597), actitud frente al uso del preservativo (0.508) y roles de género (0.403). Para trabajadoras de la salud, el peso de las dimensiones fue: actitud frente al uso del preservativo (0.638), relación de pareja (0.397), y roles de género (0.307). CONCLUSIONES: Los resultados permiten inferir diferencias en los factores que condicionan la vulnerabilidad al VIH en los grupos de mujeres, siendo para aquellas que están en riesgo social el rol de género el factor con mayor capacidad predictiva de riesgo.