324 resultados para 1384


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In contrast to the prevailing preconception, Christian females engage in polygyny in most of sub-Saharan Africa. Based on individual-level data provided by the Demographic and Health Survey (2000, 2004, 2010) in Malawi, this study explores whether Christian identity reduces the likelihood that females enter into polygyny. To address the endogeneity associated with this identity, the analysis adopts an instrumental variable (IV) approach by exploiting the unique setting of a Christian mission dating back to the late 19th century. Exposure to the mission, measured by geographical distance to the influential mission station, Livingstonia, enabled the indigenous population to gradually convert to Christianity. This is particularly true for the local population not belonging to the Yao, an ethnic group that was largely proselytized into Islam because of their historical connection with the Arabs. Using the distance-ethnicity (non-Yao) interaction as an IV for women's Christian identity, with numerous historical, geographic, and climate controls, this study discovers that compared to those practicing other religions (Islam and other) or no religion, Christian females are indeed less likely to form polygynous unions. This study also provides some evidence suggesting that the Christianity effects are more evident in a society at a more primitive stage of development.

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This article describes the design of a linear observer–linear controller-based robust output feedback scheme for output reference trajectory tracking tasks in the case of nonlinear, multivariable, nonholonomic underactuated mobile manipulators. The proposed linear feedback scheme is based on the use of a classical linear feedback controller and suitably extended, high-gain, linear Generalized Proportional Integral (GPI) observers, thus aiding the linear feedback controllers to provide an accurate simultaneous estimation of each flat output associated phase variables and of the exogenous and perturbation inputs. This information is used in the proposed feedback controller in (a) approximate, yet close, cancelations, as lumped unstructured time-varying terms, of the influence of the highly coupled nonlinearities, and (b) the devising of proper linear output feedback control laws based on the approximate estimates of the string of phase variables associated with the flat outputs simultaneously provided by the disturbance observers. Simulations reveal the effectiveness of the proposed approach.

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Estudo sobre as construções simbólicas e identitárias da mulher presentes na narrativa e na estrutura das personagens femininas do filme Malévola (2014) – produção dos estúdios Disney (EUA). A narrativa é inspirada no conto de fadas “A Bela Adormecida do Bosque” e distingue-se pela perspectiva feminina, modificando as possibilidades de interpretação, além de possibilitar a quebra do paradigma dicotômico relacionado ao Bem e ao Mal. A pesquisa tem por objetivo estudar a evolução das construções imaginárias da mulher no cinema e traçar paralelos entre as características arquetípicas das personagens de Malévola em relação à identidade da mulher na contemporaneidade. Para tal, será tomado como referencial teórico os estudos do imaginário social, com as obras de Gilbert Durand, Edgar Morin e, em especial, Michel Maffesoli; conceitos da psicanálise a partir dos trabalhos de C.G. Jung, Erich Neumann, Marie-Louise Von Franz e Clarissa Pinkola Estés; as teorias de Stuart Hall, Laura Mulvey e Gilles Lipovetsky relacionadas aos estudos culturais com ênfase em gênero; e também o ecofeminismo através dos trabalhos de autoras como Vandana Shiva e Maria Mies. Nosso referencial teórico-metodológico é a Hermenêutica de Profundidade (HP) visando à interpretação da estrutura simbólica de nosso objeto. Resultam desta pesquisa a verificação de um processo de saturação de padrões identitários e simbólicos provindos da modernidade e a evolução de novas dinâmicas nas narrativas presentes nas mídias e na comunicação

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Algunos de los aspectos clave en el desarrollo profesional de un ingeniero son su capacidad para trabajar en equipo, para integrar diferentes puntos de vista y para desarrollar grandes proyectos con un alto nivel de incertidumbre. Los planes de estudio de las titulaciones que preparan a estos futuros ingenieros no pueden permanecer ajenos a estas necesidades y deben plantear situaciones lo más cercanas posible a la realidad que se encontrarán nuestros egresados en su vida laboral. Estas razones, nos han llevado a plantear una experiencia innovadora en una titulación de nueva implantación como es el Grado en Ingeniería Multimedia. Hemos elegido, para ello, la metodología del Aprendizaje Basado en Proyectos (ABP), aplicada al itinerario de Creación y Entretenimiento Digital en cuarto curso, donde los estudiantes, agrupados en equipos, desarrollan un único gran proyecto durante el año, que es un videojuego. Queremos destacar dos consecuencias de esta experiencia: primero, el papel fundamental de la asignatura Proyectos Multimedia, sirviendo de apoyo al resto de asignaturas al llevar el peso de la gestión de los equipos y del seguimiento del proyecto. Y después, que los estudiantes pueden obtener un producto terminado al final del curso que les permita inaugurar su portafolio profesional.

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Spain’s immigrant population has increased 380 % in the last decade, accounting for 13.1 % of the total population. This fact has led her to become during 2009 the eighth recipient country of international immigrants in the world. The aim of this article is to describe the evolution of mortality and the main causes of death among the Spanish-born and foreign-born populations residing in Spain between 1999 and 2008. Age-standardised mortality rates (ASRs), average age and comparative mortality ratios among foreign-born and Spanish-born populations residing in Spain were computed for every year and sub-period by sex, cause of death and place of birth as well as by the ASR percentage change. During 1999–2008 the ASR showed a progressive decrease in the risk of death in the Spanish-born population (−17.8 % for men and −16.6 % for women) as well as in the foreign-born one (−45.9 % for men and −35.7 % for women). ASR also showed a progressive decrease for practically all the causes of death, in both populations. It has been observed that the risk of death due to neoplasms and respiratory diseases among immigrants is lower than that of their Spanish-born counterparts, but risk due to external causes is higher. Places of birth with the greater decreases are Northern Europe, Eastern Europe, Western Europe, Southern Europe, and Latin America and the Caribbean. The research shows the differences in the reduction of death risk between Spanish-born and immigrant inhabitants between 1999 and 2008. These results could contribute to the ability of central and local governments to create effective health policy. Further research is necessary to examine changes in mortality trends among immigrant populations as a consequence of the economic crisis and the reforms in the Spanish health system. Spanish data sources should incorporate into their records information that enables them to find out the immigrant duration of permanence and the possible impact of this on mortality indicators.

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بسم الله الرهمن الرحيم وصلى الله على سيدنا محمد وسلم هذا كتاب الثعالبي ... :Incipit

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Marine organic matter (OM) sinks from surface waters to the seafloor via the biological pump. Benthic communities, which use this sedimented OM as energy and carbon source, produce dissolved organic matter (DOM) in the process of remineralization, enriching the sediment porewater with fresh DOM compounds. We hypothesized that in the oligotrophic deep Arctic basin the molecular signal of freshly deposited primary produced OM is restricted to the surface sediment pore waters which should differ from bottom water and deeper sediment pore water in DOM composition. This study focused on: 1) the molecular composition of the DOM in sediment pore waters of the deep Eurasian Arctic basins, 2) whether the signal of marine vs. terrigenous DOM is represented by different compounds preserved in the sediment pore waters and 3) whether there is any relation between Arctic Ocean ice cover and DOM composition. Molecular data, obtained via 15 Tesla Fourier transform ion cyclotron resonance mass spectrometer, were correlated with environmental parameters by partial least square analysis. The fresher marine detrital OM signal from surface waters was limited to pore waters from < 5 cm sediment depth. The productive ice margin stations showed higher abundances of peptides, unsaturated aliphatics and saturated fatty acids formulae, indicative of fresh OM/pigments deposition, compared to northernmost stations which had stronger aromatic signals. This study contributes to the understanding of the coupling between the Arctic Ocean productivity and its depositional regime, and how it will be altered in response to sea ice retreat and increasing river runoff.

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Mode of access: Internet.