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A go/no-go procedure was used to train pigeons to discriminate pictures of human faces differing only in shape, with either
static images or movies of human faces dynamically rotating in depth. On the basis of experimental findings in humans and
some earlier studies on three-dimensional object perception in pigeons, we expected dynamic stimulus presentation to support
the pigeon’s perception of the complex morphology of a human face. However, the performance of the subjects presented with
movies was either worse than (AVI format movies) or did not differ from (uncompressed dynamic presentation) that of the subjects
trained with a single or with multiple static images of the faces. Furthermore, generalization tests to other presentation
conditions and to novel static views revealed no promoting effect of dynamic training. Except for the subjects trained on
multiple static views, performance dropped to chance level with views outside the training range. These results are in contrast
to some prior reports from the literature, since they suggest that pigeons, unlike humans, have difficulty using the additional
structural information provided by the dynamic presentation and integrating the multiple views into a three-dimensional object. 相似文献
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Objective: Review the International Campaign to Revitalise Academic Medicine (ICRAM) Future Scenarios as a potential starting point for developing scenarios to envisage plausible futures for health sciences libraries. Method: At an educational workshop, 15 groups, each composed of four to seven Association of Academic Health Sciences Libraries (AAHSL) directors and AAHSL/NLM Fellows, created plausible stories using the five ICRAM scenarios. Results: Participants created 15 plausible stories regarding roles played by health sciences librarians, how libraries are used and their physical properties in response to technology, scholarly communication, learning environments and health care economic changes. Conclusions: Libraries are affected by many forces, including economic pressures, curriculum and changes in technology, health care delivery and scholarly communications business models. The future is likely to contain ICRAM scenario elements, although not all, and each, if they come to pass, will impact health sciences libraries. The AAHSL groups identified common features in their scenarios to learn lessons for now. The hope is that other groups find the scenarios useful in thinking about academic health science library futures. 相似文献
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D. Jean Clandinin C. Aiden Downey Janice Huber 《Asia-Pacific Journal of Teacher Education》2009,37(2):141-154
Teachers, in Canada and elsewhere, live and work on school landscapes being shifted by globalization, immigration, demographics, economic disparities and environmental changes. Within those landscapes teachers find themselves struggling to compose lives that allow them to live with respect and dignity in relation with children, youth and families. In places in Canada, increasing numbers of teachers are leaving after only a few years of teaching. In this paper we take up questions about the stories teachers tell of their leaving and about what we can learn about our work as teacher educators from listening to, and inquiring into, their stories. Considering the inter-relatedness of our lives as teacher educators with teachers, we also inquire into our shifting landscapes as teacher educators. We discuss possible spaces we might collaboratively shape with teachers as they, and we, attempt to sustain our stories to live by on these shifting landscapes. 相似文献
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Theory, practice, and research are all espoused to be core values within counselor education. The authors assert that research needs to become directly associated with theory and practice for it to be a concurrent core value. Action research is most simply defined as a form of research that is practitioner based. The authors propose infusing action research throughout master's‐level curricula as a means of promoting research as a core value concurrent with theory and practice. A case illustration of an action research investigation in a Professional and Ethical Issues in Mental Health Counseling course is described. 相似文献
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