Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro / Este estudo se insere em uma abordagem Pós-estruturalista. Nele, o conceito de discurso desenvolvido por Laclau é utilizado como categoria de análise para investigar o processo de legitimação do saber científico. O conceito de recontextualização por hibridismo proposto por Lopes (2005; 2006a) orienta a análise dos discursos produzidos nos diferentes contextos de produção curricular, a partir da abordagem do ciclo de políticas desenvolvida por Bowe, Ball e Gold (1992)e Ball (1994). No trabalho, são identificadas as demandas articuladas nos discursos de uma comunidade de pesquisadores que têm investigado o ensino de ciências nos anos iniciais do Ensino Fundamental. O estudo também apresenta uma reflexão produzida a partir de dados reunidos em uma pesquisa de cunho etnográfico,realizada em duas escolas da rede municipal de ensino do município do Rio de Janeiro. As análises indicam que o discurso educacional sobre o ensino de ciências expressa sentidos em disputa que oscilam entre a incorporação de novos paradigmas de ciência e de currículo e a manutenção de marcas que procuram preservar a ciência como conhecimento superior, contribuindo para a reafirmação dos princípios racionais que estão na base de constituição da escola como instituição da modernidade e associadas ao processo de hegemonização desse saber. / This study falls within a Post-structuralist approach. In this study, Laclau's concept of discourse is used as an analysis category to investigate the legitimization process of scientific knowledge. The concept of recontextualization by hybridism proposed by Lopes (2005; 2006a) guides the analysis of the discourses produced in the different contexts of curriculum production based on the policy cycle approach developed by Bowe, Ball and Gold (1992) and Ball (1994). This study identifies the demands voiced in the discourse of a researchers community that has been investigating science teaching at the initial years of Elementary School. The study also presents some reflection on the data gathered in an ethnographic research conducted in two schools from the Rio de Janeiro City school system. The analysis show that the educational discourse on science teaching conveys disputing meanings that range from the incorporation of new paradigms of science and curriculum to the maintenance of marks that seek to preserve science as a superior form of knowledge. Such marks contribute to the reaffirmation of the rational principles that form the basis of the school as a modern institution and are associated with the process of making this knowledge hegemonic.

Environment friendly products can be defined as products which show significant environmental improvements made at their most important life-cycle stages. For durable goods, life-cycle stages include manufacturing, use, and end-of-life of product. Reverse Supply Chain Management is the process of planning, implementing, and controlling the efficient, cost effective flow of raw materials, in-process inventory, finished goods and related information from the point of consumption to the point of origin for the purpose of recapturing value and/or proper disposal. The efficient and proper use of 5R’s processes namely Remanufacturing, Refurbishment, Reuse, Repair; and Recycle help the product to be greener and environment friendly. Part of the process also includes the proper disposal of goods which is essential for maintaining a green environment. This study aims at finding the significant factors to be considered by Cathode Ray Tube (CRT) Television component manufacturers to manufacture Environment Friendly Product. Various parameters like raw material procurement; water and energy consumption in product manufacturing; the extent of environmental regulations followed; waste production; and waste processing have been considered in this study. A Case Study has been prepared to study the entire manufacturing process of a CRT Television. The case study also looks at the regulations followed by CRT TV component manufacturers in India and how they are different from other countries. An attempt has been made to find out the value which can be recovered at the End-Of-Life of CRT TVs. The case also looks at safe recycling options for CRT TVs. The study shows that CRT TV component manufacturers consider Resource Procurement, Energy Utilization; and Compliance with Regulations to a significant extent. Also, an attempt has been made to develop an Environmental Friendly Index (EFI). The EFI depends on resource procurement, energy utilization, waste production, waste processing, and existence of environmental team in the company. There have been no steps taken by these component manufacturers towards dealing with return goods. All the return goods are dealt with by recyclers, who extract the material through unscientific and non-environmental friendly ways. The recyclers are not able to extract all the useful material, which if done in an efficient way, will result in more material recovery.

In der Dissertationsschrift wird die Entwicklung und Evaluation eines Unterrichtskonzeptes für computergestütztes kooperatives Lernen am beruflichen Gymnasium für Informations- und Kommunikationstechnologie beschrieben. Das Konzept für Computer Supported Cooperative Learning (CSCL) wurde im Rahmen des sächsischen Landesschulversuches "Einführung der Fachrichtung Informations- und Kommunikationstechnologie am beruflichen Gymnasium im Freistaat Sachsen" in Zusammenarbeit mit der Technischen Berufsschule Zürich erprobt. In der Dissertationsschrift werden Fachbegriffe der Didaktik der Informatik präzisiert. Desweiteren sind Forschungsmethoden, quantitative und qualitative Untersuchungsergebnisse sowie deren Auswertung insbesondere zur CSCL-Handlungskompetenz enthalten.