545 resultados para mirrors


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A Prática Educativa Supervisionada representa, sem dúvida, a etapa mais aguardada pelos estudantes que se formam para serem professores, pois este é um momento recheado de expectativas e descobertas da profissionalidade docente. Por conseguinte, o presente relatório de estágio pretende espelhar o percurso evolutivo da mestranda ao longo dessa prática pedagógica. A passagem pelas escolas ficou marcada por uma postura crítica e reflexiva perante as opções pedagógicas tomadas, sendo que estas resultaram sempre de uma articulação entre os quadros teóricos e práticos de cada área disciplinar. A supervisão, processo crucial durante o estágio, é considerada pela professora estagiária como um momento de acompanhamento e orientação da ação educativa por parte dos supervisores institucionais. A par deste processo foi sempre visível um trabalho colaborativo com o par pedagógico e com os professores cooperantes, com o principal objetivo de atingir novos e melhores modos de agir, ancorando-se, assim, nos pilares da metodologia de investigação-ação. O trajeto construído pela formanda é o retrato de uma experiência de desenvolvimento pessoal e profissional, tendo, porém, a convicção de que, apesar de este relatório marcar o término de um ciclo de estudos inicial, há muito mais para aprender e construir.

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We present a high resolution spectrometer consisting of dual solid Fabry-Perot Interferometers (FPIs). This work is intended to be an all inclusive documentation of the instrument including discussion of the design of this instrument, the methods used in data reduction, and the analysis of these data. Each FPI is made of a single piece of L-BBH2 glass which has a high index of refraction n~2.07 with a thickness on the order of 100 μm. Each is then coated with partially reflective mirrors to create a resonant cavity and thus achieve a spectral resolution of R~30,000. Running the FPIs in tandem reduces the overlapping orders and allows for a much wider free spectral range and higher contrast. We will also discuss the properties of the FPIs which we have measured. This includes the tuning of the FPIs which is achieved by adjusting the temperature and thus changing the FPI gap and the refractive index of the material. The spectrometer then moves spatially in order to get spectral information at every point in the field of view. We select spectral lines for further analysis and create maps of the line depths across the field. Using this technique we are able to measure the fluorescence of chlorophyll in plants and attempt to observe zodiacal light. In the chlorophyll analysis we are able to detect chlorophyll fluorescence using the line depth in a plant using the sky as a reference solar spectrum. This instrument has possible applications in either a cubesat or aerial observations to measure bulk plant activity over large areas.

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Mode of access: Internet.

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As the educational landscape increasingly mirrors deepening socio-economic cleavages within Australian society, the disparity in educational outcomes has been identified as one of the biggest challenges confronting secondary schooling. In contrast with most OECD countries, family background remains the most important determinant of educational achievement in Australia. More and more, schools are defined by location, reinforcing what has been dubbed the 'circular pattern of disadvantage'. At the same time, recognition of strong links between outcomes, socio economic status and location has elicited growing calls for systematic redefining of learning experiences and the public education framework. Focus on flexible, rigorous, community-oriented, person-centred learning opportunities has predicated multiple mentoring and youth schemes and has guided policy. Recognition of the need to re-engage Year 9 and 10 students underpinned development of VELS, for instance; it has also directed the programming priorities of Education Foundation Australia (EFA). This paper will discuss first, how schools perceive the programs have made a difference to both individual students and the curriculum offered in the schools, and second, how the experiences and activities provided through the program have changed the expectations and aspirations that many of the participants have in regard to how they perceive their future, their engagement with school and their careers. Both City Centre and Worlds of Work (WOW) program have received a very positive student response to real world activities that have demonstrably enhanced the development of reflective processes, interpersonal and social skills and social networks. Practical outcomes have included self-organised work experience, the development of mentor relationships and the re-engagement of some students with the schooling process. Interview data confirmed EFA's assessment that its programs have greatest impact when integrated into a school's curriculum rather than as "stand alone" electives.

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Dirk de Bruyn’s expanded cinema performances engage the æsthetics of process at a number of levels. At the core of these performances are several of three- or four-screen, essentially abstract films of the same duration which comment upon and echo each other in a constant interplay of flicker-like positive and negative imagery. The soundtrack of the films works in a related way: the same or similar words and sound fragments are overlayed, or are repeated in an absurd call-and-answer pattern running from one speaker to another. This overall design or formal system is then set into play and relativised in the live event through a number of treatment-techniques. Reels are placed out of order or interspliced with other short films or fragments of found footage or tests, the bulb of one or more projectors can be occasionally turned off while the soundtrack continues, or the projector can be stopped altogether, extending, stretching out or disrupting completely the apparent synchrony between each screen and soundtrack. The light beam of each projector is filtered, distorted, split and multiplied using hand-held colour gels, plastic bottles, prisms and mirrors, or else silhouetted or blocked completely with the artist’s own hands and body. The projectors themselves can be inverted, turned around or physically transported across the space, mixing and overlaying the imagery, animating different areas of the performance environment and transforming the body of the audience itself into a screen medium.