Fermi and Gamow-Teller Strength in Charge Exchange with Radioactive Beams

At forward angles, and bombarding energies E > 200 MeV, the (p,n) and (n,p) reactions are thought to be directly proportional to the Gamow-Teller transition strengths in the nuclei. Assuming that this relationship also holds for charge exchange induced by high-energy heavy ions, it would be very useful in studies with radioactive beams. Contrary to this expectation, we show that the determination of Gamow-Teller and Fermi matrix elements from heavy-ion charge-exchange at forward angles is very inaccurate.Comment: 9 pages, RevTeX, 4 PostScript figures available upon reques

Competencias sociales en la estrategia de desarrollo de carrera

En este artículo se presenta una propuesta de intervención en el Núcleo de Gestión de Carrera del Programa de Postgrado en Administración de Empresas de la Universidad de Taubaté, cuyo objetivo es guiar la planificación del desarrollo, la gestión y la carrera de los ejecutivos en formación en el proyecto denominado “Desarrollo de Habilidades Sociales para el Liderazgo”. Se describen las fases de aplicación de promoción de las competencias sociales, formadas por (1) la evaluación de las habilidades sociales, (2) el entrenamiento en habilidades sociales y (3) la evaluación de los resultados de éste. El desarrollo sistemático de estas intervenciones tiene por objeto promover un ambiente de desarrollo personal, la discusión de las oportunidades de carrera y el desarrollo de habilidades de comportamiento (social y liderazgo) requeridas por los cambios en la complejidad del ambiente de trabajo, el reconocimiento de estos aspectos ayudan a articular interacciones más eficientes.This article presents a proposal for intervention in the Career Management Center for Graduate Program in Business Administration from the University of Taubaté, whose goal is to guide development planning, management and career in executives professionals in training, in the project entitled Development of Social Skills for Leadership. Describes the implementation stages of promotion of social skills, formed by the evaluation of social skills, social skills training and evaluation of the results of social skills training. The systematic development of these interventions is to promote an environment of personal development, discussion of career opportunities and the development of behavioral skills (social and leadership) required by changes in the complexity of the work environment and recognition of these aspects help articulate more efficient interactions

Nuclear Astrophysics in Storage Rings

Nuclear reaction cross sections are usually very small in typical astrophysical environments. It has been one of the major challenges of experimental nuclear astrophysics to assess the magnitude of these cross sections in the laboratory. For a successful experiment high luminosity beams are needed. Increasing the target width, one also increases the reaction yields. But, this is of limited use due to multiple scattering in the target. Storage rings are a very good way to overcome these difficulties. In principle, they can be tuned to large luminosities, and have the advantage of crossing the interaction region many times per second (typically one million/s), compensating low density internal gas targets, or low reaction rates in beam-beam collisions. Storage rings are also ideal tools for precise measurements of masses and beta-decay lifetimes of nuclei of relevance for astrophysics.Comment: 14 pages, LaTeX, figures available upon reques

Correlação entre Clima Organizacional e Inovação: importância do gerenciamento de variáveis que influenciam o ambiente inovativo de uma universidade pública federal

As universidades possuem papel decisivo na geração de tecnologias que propiciam a melhoria de processos e produtos, os quais, como consequência, contribuem para a qualidade de vida da sociedade. Ao considerar a relevância da universidade nesse sentido, o presente trabalho procura analisar fatores do clima organizacional que influenciam a esfera inovativa, na visão dos docentes que atuam no Campus Universitário de Gurupi/UFT, por meio de aplicação de questionário. A pesquisa objetiva demonstrar a importância do gerenciamento destas variáveis a fim de se criar ou manter um clima permanente de renovação e inovação. Concluiu-se que o ambiente predisposto à inovação do Campus de Gurupi não pode ser classificado como prejudicado, devendo ter melhorias no sentido de serem gerenciados com mais foco e cuidado os recursos humanos e materiais, que são indispensáveis à inovação, como também é preciso suplantar a falta de unidade com o intuito de se efetivar a cooperação entre setores. Palavras-chave: clima organizacional; ambiente inovativo; universidade pública federal

Temperature and Emissivity Separation ‘Draping’ Algorithm Applied to Hyperspectral Infrared Data

In the presented work, the spectral emissivity of basaltic melts at magmatic temperatures was retrieved in a laboratory-controlled experiment by measuring their spectral radiance. Granulated bombs of Etnean basalts were melted and the radiant energy from the melting surface was recorded by a portable spectroradiometer in the short wavelength infrared (SWIR) spectral range between 1500 and 2500 nm. The Draping algorithm, an improved algorithm for temperature and emissivity separation, was applied for the first time to SWIR hyperspectral data in order to take into account the non-uniform temperature distribution of the melt surface and, at the same time, solving the two temperatures and the spectral emissivity. The results have been validated by comparing our results with the emissivity measured at a "lava simulator". Basalt spectral emissivity does not vary significantly at magmatic temperature, but shows an absorption feature in the range 2180–2290 nm, an atmospheric window pivotal for the IR remote sensing of active volcanoes.</jats:p

Temperature and Emissivity Separation ‘Draping’ Algorithm Applied to Hyperspectral Infrared Data

In the presented work, the spectral emissivity of basaltic melts at magmatic temperatures was retrieved in a laboratory-controlled experiment by measuring their spectral radiance. Granulated bombs of Etnean basalts were melted and the radiant energy from the melting surface was recorded by a portable spectroradiometer in the short wavelength infrared (SWIR) spectral range between 1500 and 2500 nm. The Draping algorithm, an improved algorithm for temperature and emissivity separation, was applied for the first time to SWIR hyperspectral data in order to take into account the non-uniform temperature distribution of the melt surface and, at the same time, solving the two temperatures and the spectral emissivity. The results have been validated by comparing our results with the emissivity measured at a "lava simulator". Basalt spectral emissivity does not vary significantly at magmatic temperature, but shows an absorption feature in the range 2180&ndash;2290 nm, an atmospheric window pivotal for the IR remote sensing of active volcanoes

A EXPATRIAÇÃO COMO ESTRATÉGIA DE APRENDIZAGEM ORGANIZACIONAL E CARREIRA

Este trabalho discute a expatriação como estratégia de aprendizagem e carreira de executivos globais. A pesquisa é exploratória com delineamento quantitativo, baseada em questionário aplicado a um grupo de expatriados e na observação não participante em dois casos de expatriação. A percepção do valor agregado da expatriação à carreira é ambígua. Observou-se um flagrante desequilíbrio na relação sacrifício versus beneficio da expatriação. Os pesquisados casados consideram-na um meio de progresso na carreira, e os solteiros vêm-na como um desafio. A família é um importante mecanismo de regulação da adaptação cultural e do estresse da mudança.</jats:p