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51.
ABSTRACT

This article presents historical and scientific analysis, as well as the conservation treatment of a newly rediscovered Roman wall painting fragment, now in the collection of the Harvard Art Museums. Although the piece has not previously been published, it was among a group of fragments removed from a Roman villa near Boscotrecase in southern Italy, an area that has been key to the study of Roman wall painting and other decoration. Technical imaging confirms the use of painting techniques consistent with other high-quality paintings in the area. Materials analysis revealed a palette consistent with published findings of Roman wall paintings, including abundant use of Egyptian blue and green earth. Of interest was the use of Egyptian blue as an optical brightener in select white passages. Despite the high quality of the painting, no cinnabar was present, and all red passages were achieved using hematite. Multiple different white minerals were identified including calcite, aragonite, and gypsum. The widespread presence of gypsum is unusual and may point to alteration.  相似文献   
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It has been argued by both educationalists and social researchers that visual methods are particularly appropriate for the investigation of people’s experiences of the school environment. The current and expected building work taking place in British schools provides an opportunity for exploration of methods, as well as a need to establish ways to achieve this involvement of a range of school users, including students. This article describes a consultation that was undertaken in a UK secondary school as part of a participatory design process centred on the rebuilding of the school. A range of visual methods, based on photographs and maps, was used to investigate the views of a diverse sample of school users, including students, teachers, technical and support staff and the wider community. Reported here is the experience of using these tools, considering the success of different visually-based methods in engaging a broad cross section of the school community and revealing useful information. Using a range of visual methods allows a complex, but coherent, understanding of the particular school environment to be constructed and developed. It is further argued that such a range of visual and spatial methods is needed to develop appropriate understanding. The study, therefore, contributes to knowledge about specific visual research methods, appreciation of the relationship between tools, and a general methodological understanding of visual methods’ utility for developing understanding of the learning environment.  相似文献   
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Recommendations for reform in science education around the world set high goals for beginning elementary teachers. Concurrently, existing literature indicates a number of challenges that beginning elementary teachers face. In this paper an argument is put forward about the integration of informal science environments in elementary teacher preparation, as a means for supporting beginning elementary teachers develop reform-minded science teaching identities. Essentially, the purpose of this paper is to explore the links between teacher identity, reform recommendations, and informal science environments. In doing so, a discussion of the theoretical construct of teacher identity in conjunction with reform recommendations is offered, followed by a summary of existing literature about the challenges that beginning elementary teachers face. Subsequently, the advantages and unique opportunities that informal science environments offer for teacher learning and development are discussed through a review of related literature. Following this review, a set of theoretical and methodological limitations of existing literature are identified. Based on these limitations, a research agenda is framed to address the theoretical, methodological and research implications that the idea of integrating informal science environments and approaches to elementary teacher preparation holds.  相似文献   
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