Resultados de pesquisa

In this work we generate and detect single photons in optical fibers using the stimulated four-wave mixing (FWM)process. The results show an accurate generation of single photons at four different linear states of polarization (SOPs), with angles 0, 45, 90 and -45 degrees.

Os autores desenvolvem neste trabalho um modelo de intervenção em saúde escolar, reforçando a vantagem da realização dum exame global de saúde no final da idade préescolar. Foi feito um levantamento dos objectivos gerais pedagógicos definidos para a educação pré-escolar, dos objectivos da Educação para a Saúde Pré-Escolar e reflectiram sobre a intervenção adequada e articulada em crianças com necessidades educativas especiais, não só no que concerne a necessidades específicas resultantes do tipo e grau de deficiência, mas também na prevenção de outra problemática emergente. Um desenvolvimento harmonioso apela à precocidade da intervenção educativa e à necessidade de se realizar acções de educação para a saúde no jardim de infância.

Inexistente

The authors develop in this work, a model for intervention in school health, and reinforce the benefits of a global medical examination at the end of pre-school.They had done a research of pedagogic general objectives defined to pre-school education and the objectives of education for a pre-school health. They also reflect about an intervention in children with special needs of education.

This paper is the consensus of a workshop that critically evaluated the utility and problems of video playbacks as stimuli in studies of visual behavior. We suggest that video playback is probably suitable for studying motion, shape, texture, size, and brightness. Studying color is problematic because video systems are specifically designed for humans. Any difference in color perception must lead to a different color sensation in most animals. Another potentially problematic limitation of video images is that they lack depth cues derived from stereopsis, accommodation, and motion parallax. Nonetheless, when used appropriately, video playback allows an unprecedented range of questions in visual communication to be addressed. It is important to note that most of the potential limitations of video playback are not unique to...