15,961 research outputs found

    Reduction and construction of Poisson quasi-Nijenhuis manifolds with background

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    We extend the Falceto-Zambon version of Marsden-Ratiu Poisson reduction to Poisson quasi-Nijenhuis structures with background on manifolds. We define gauge transformations of Poisson quasi-Nijenhuis structures with background, study some of their properties and show that they are compatible with reduction procedure. We use gauge transformations to construct Poisson quasi-Nijenhuis structures with background.Comment: to appear in IJGMM

    Attitude and empowerment: integrated actions intended for sustainability in the Tarumã-Mirim Settlement in the central amazon area.

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    This piece of work is intended to present the analyses of the pioneering experience developed by Embrapa West Amazon and IFAM in the Tarumã-Mirim Settlement (Manaus, Central Amazon Brasil). The concept of the "Tarumã Life" Project takes into account the economic-productive, social, environmental, political and cultural dimensions on sustainable foundations. We have opted for a collaborative approach through which there is effective participation of the community in the phases of the project considering the fact that the community can play a protagonist role in its own development. The families have replaced the production of vegetal charcoal for the cultivation of green vegetables and for reforestation, finding new ways of marketing their products. We have observed considerable evolution in the community concerning empowerment, generating critical thinking about reality and favoring the organization and generation of income, making for a wider social influence as well as the decrease of environmental impacts.Abstract 0100

    Niños superdotados y Talentos: Heterogeneidad y diferencias individuales

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    The article tackles the topic that refers to giftedness beyond academic areas. Specifically, it focuses on musical talent. The work is differentiated into two parts. In the first part the authors expose the case of gifted students' heterogeneity. To do so, they present a previous research focused on the study of different patterns of response of gifted students to the WISC-IV. Such study illustrates the case of gifted students' diversity, showing that higher IQ students present higher inter-variability in their cognitive profiles. The second part of the article focuses on musical talent. In a first moment authors introduce the concept of musical talent and a literature review on the factors that influence that talent. From there, authors question if it could be possible to isolate the variables that differentiate the development of musical talent. To do so, Authors present a retrospective study based on interviews and questionnaires to parents and teacher of 42 non-gifted and 42 students identified as promising talent in music. The questionnaire assessed: Implication of parents, Motivation of the pupil, Work of the pupil and Contribution of the teacher. The authors are able to distinguish between developmental trends in the formation of musical talent, depending on children's age and styles on dealing with their musical assignments and work-load (experience music as a passion vs. as an obligation).El articulo trata el tema referido a la superdotación más allá de las áreas académicas. Específicamente se centra en el talento musical. El trabajo se diferencia en dos partes. En una primera parte los autores exponen la heterogeneidad de los alumnos superdotados. Para ello presentan una investigación previa en el estudio de los patrones de respuesta de alumnos superdotados a la prueba WISC-IV. Dicho estudio ilustra la diversidad entre los alumnos superdotados, mostrando que los alumnos con mayor CI presentan mayor inter-variabilidad en sus perfiles cognitivos. La segunda parte del trabajo se centra en el talento musical. Los autores revisan el concepto de talento musical y revisan las variables que influencian en desarrollo de dicho talento. Los autores se cuestionan si sería posible diferenciar las variables que diferencian el desarrollo del talento musical. Para ello, presentan un estudio retrospectivo basado en entrevistas y cuestionarios a padres y profesores de 42 alumnos no superdotados y 42 alumnos talentos en música. El cuestionario evalúa: Implicación de los padres, Motivación del alumno, Trabajo del alumno y Contribución del profesor. Los autores son capaces de distinguir diferentes tendencias evolutivas en la formación del talento musical dependiendo de la edad del niño y su estilo al tratar con sus deberes musicales (aquellos que experimentan la música como una pasión vs. aquellos que la experimentan como una obligación)

    Fractional quantization of ballistic conductance in 1D hole systems

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    We analyze the fractional quantization of the ballistic conductance associated with the light and heavy holes bands in Si, Ge and GaAs systems. It is shown that the formation of the localized hole state in the region of the quantum point contact connecting two quasi-1D hole leads modifies drastically the conductance pattern. Exchange interaction between localized and propagating holes results in the fractional quantization of the ballistic conductance different from those in electronic systems. The value of the conductance at the additional plateaux depends on the offset between the bands of the light and heavy holes, \Delta, and the sign of the exchange interaction constant. For \Delta=0 and ferromagnetic exchange interaction, we observe additional plateaux around the values 7e^{2}/4h, 3e^{2}/h and 15e^{2}/4h, while antiferromagnetic interaction plateaux are formed around e^{2}/4h, e^{2}/h and 9e^{2}/4h. For large \Delta, the single plateau is formed at e^2/h.Comment: 4 pages, 3 figure

    Factores de risco associados á transmissão de diarreia em crianças dos 6 meses aos 7 anos no bairro do Xipamanine

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    As diarreias continuam a ser em Moçambique e em muitos paises em desenvolvimento um dos problemas de Saúde pública mais importantes. São doenças transmissiveis não preveniveis por vacina eque ocorrem com frequencia de forma isolada ou associada à malnutrição e malaria causando elevadas taxas de mortalidade nos países em desenvolvimento. Para cada caso foi escolhido um controle constituido por indivíduos do mesmo sexo e idade que o casos, e residentes na mesma area, sem historia de dejecções liquidas nos ultimos 60 dias anteriores á data de recolha de dados. A área de estudo foi o Bairro do Xipamanine. Motivou a escolha desta zona o facto de este bairro ter durante anos consecutivos registado o maior número de casos das diarreias ocorridas na Cidade de Maputo. De acordo com dados da Direcção de Saude da Cidade do Maputo, em 1996, por exemplo, registaram-se 34.095 casos de diarrea nesta zona, dos quais 25.406 (75%) em crianças do 0-14 anos

    Consultants as strategic practitioners: an analysis in the sociological field research of strategy-as-practice

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    Although management consulting activities have obtained a considerable growth in terms of economic significance in recent years, these results have not been duly followed by a greater number of conceptual and empirical researches in this area. In order to fight the lack of studies on the actual work of management consultants, this article aims at answer to one question that remains open. Are consultants the real experts and the true practitioners of strategy as practice? The results of the empirical analysis in the form of semi-structured interviews and questionnaires given to management consultants and SME managers in Portugal shows that management consulting is founded on a knowledge-intensive base, although consultants cannot be called strategy practitioners as many authors call them. This is illustrated in the model presented in this article, which means this proposition is a new direction in strategic thinking in what the field’s research strategy-as-practice concerns.info:eu-repo/semantics/publishedVersio
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