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121.
This article shares the first-time geographic information system (GIS) experiences of two advanced placement human geography classes. The teacher had participated in a summer GIS workshop and then brought those skills into her classroom for the students' benefit. Eighteen students shared their experiences researching their family history, working to map the migration of their genealogy to the United States, and presenting their findings to their classmates. Researchers were on hand to observe presentations and collected survey data from the students. Overall it was a very successful educational experience in which students utilized a “new” technology in the context of their own lives.  相似文献   
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When heat treatment of silcrete for stone knapping was first discovered in the South African Middle Stone Age (MSA), the procedure used for it was suggested to be similar to the one used for heat treatment of finer rocks in other parts of the world: slow sand-bath heating. This comparison may have been based on published data from the fields of ethnography, experimentation and archaeology, describing sand-bath like structures and processes. In this review, I discuss whether the available data from these three fields indeed justify the suggestions that sand-bath heating was used in the context of MSA silcrete heat treatment. A careful revaluation of the available data shows that, although sand-bath heating is a widely accepted procedure that is documented in other parts of the world, understanding the earliest known cases of heat treatment in the MSA calls for another technical procedure.  相似文献   
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ABSTRACT

As the Spanish Civil War (1936-1939) came to an end, hundreds of thousands of Spaniards who had opposed the military rebellion which initiated the war and remained loyal to the democratically elected government were forced into exile. Amongst them was the philosopher María Zambrano (1904-1991). While little known to an English-speaking readership, she represents a unique voice engaging with some of the fundamental problems of our times. Her life was marked, like that of her contemporaries Benjamin, Husserl, Arendt, Pato?ka, Adorno, Lacan, Derrida and Blumenberg by the crisis of modernity culminating in the two World Wars. Her work is part of the same philosophical debates, currents and problems facing the Europe of her time. The aim of the volume María Zambrano amongst the philosophers, introduced in this article, is to focus on the links between Zambrano’s thought and a wide range of themes and ideas associated with these other European thinkers. A summary of Zambrano’s main philosophical concepts and preoccupations is also offered to help the reader situate the translated anthology of texts by the philosopher included in the volume.  相似文献   
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