2 resultados para Dominazione spagnola in Sardegna, lingua sarda, influenze linguistiche, contatto fra culture

em Digital Commons at Florida International University


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Historically, research has placed considerable emphasis on developing a systematic body of knowledge about education in which little voice has been given to teachers themselves. The critical role that teachers play in this generative process such as reflecting, acting and theorizing upon practices that shape life in the classroom has largely been ignored in favor of technical innovation and organizational procedure. As schools struggle to reform and restructure, an understanding of how teachers interpret their practices in context and how the culture of schools influence, constrain, or encourage these practices become critical aspects of school success or failure. ^ This study examined the perspectives on inclusion of seven middle school teachers as they attempted to include exceptional students in regular classes. The study utilized three forms of data collection: observations were made of participant interactions as they led their everyday school lives; document analysis was used as a means to gain an understanding of programs affecting exceptional students, and interviews were used to give voice to teacher's perceptions regarding inclusion, allowing description in their own words rather than those imposed by an outside inquirer. Data collection and analysis sought to identify emerging themes, categories and patterns, allowing for the creation of substantive theory grounded in empirical data. ^ The key issues that emerged in the study were considered in terms of three general categories. The first, teaching and learning, revealed stark contrasts in opinions regarding the type of human support thought necessary for successful inclusion. Regular educators clung to the traditional notion of solitary teachers directing all class activity, while exceptional educators preferred a more team-oriented approach. The second, school structure, revealed that highly collaborative structures were only partially successful in creating additional conversation between regular and exceptional educators. Collegiality was affected by lack of staff experience with the process as well as its implementation in a top-down fashion. The third, school culture and climate, revealed that regular educators believed the school was prepared for a limited amount of inclusion. Although exceptional educators acknowledged school readiness, they did not believe that inclusion was an important item on the school's reform agenda. ^

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Cyanobacteria are photosynthetic prokaryotes that can be found in freshwater and marine environments as well as in soil. These organisms produce a variety of different biologically active compounds exhibiting anti-bacterial, anti-fungal and anti-cancer properties among others. In this study, cyanobacterial isolates were screened for their ability to produce extracellular antibacterial products. Cyanobacteria were isolated from fresh water and soil samples collected in the Pembroke Pines, FL area. Twenty- seven strains of cyanobacteria were isolated belonging to the following genera: Limnothrix, Nostoc, Fischerella, Anabaena, Pseudoanabaena, Lyngbya, Leptolyngbya, Tychonema, and Calothrix. Individual strains were grown in liquid culture in laboratory conditions. Following 14-day cultivation, the culture liquid was filtered and tested for activity against the following bacteria: Escherichia coli, Bacillus megatarium, Staphylococcus aureus, and Micrococcus luteus. Among all genera of cyanobacterial strains tested, Fischerella exhibited the greatest inhibitory activity. An attempt was made to isolate the active compound from the culture liquid of the active strains. Lipophilic extracts from culture liquid were obtained from three selected Fischerella strains. The extracts proved to have varying levels of activity against the tested bacteria. Inhibitory activity from all three Fischerella strains was detected against B. megatarium and M luteus. The only strain that was active against S. aureus was Fischerella sp. 114-12 while none of the extracts showed activity against E. coli. This kind of screening has potential pharmaceutical and agricultural benefits, including possible discovery of novel antibiotics.