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Joshua R. Tyler Dennis M. Wilkinson Bernardo A. Huberman 《The Information Society》2013,29(2):143-153
We describe a method for the automatic identification of communities of practice from e-mail logs within an organization. We use a betweenness centrality algorithm that can rapidly find communities within a graph representing information flows. We apply this algorithm to an initial e-mail corpus of nearly 1 million messages collected over a 2-month span, and show that the method is effective at identifying true communities, both formal and informal, within these scale-free graphs. This approach also enables the identification of leadership roles within the communities. These studies are complemented by a qualitative evaluation of the results in the field. 相似文献
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We examined the relationship between implicit and explicit “exerciser” and “sedentary” self-identity when activated by stereotypes. Undergraduate participants (N = 141) wrote essays about university students who either liked to exercise or engage in sedentary activities. This was followed by an implicit identity task and an explicit measure of exercise self-identity. Results showed that implicit and explicit exerciser identities were not highly correlated. There were also no significant prime effects, but women showed greater implicit sedentary identity, whereas men showed greater implicit exercise identity. This research suggests that implicit exercise-related identity is a distinct construct from explicit exercise identity. The results also reflect responses to societal pressures for women to be thin and for men to be strong, when free of self-presentational bias. 相似文献
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Does MSP Participation Increase the Supply of Math Teachers? Developing and Testing an Analytic Model 总被引:1,自引:1,他引:0
An important feature of the Math and Science Partnership (MSP) Program of the National Science Foundation is to increase K-12 student achievement in math and science by increasing the quality, quantity, and diversity of the nation's K-12 math and science teachers. Because the underlying supply of math and science teachers is never directly observed, the central premise of this article is that an examination of the extent to which the MSP Program might impact the quantity and quality of math and science teachers requires careful thought and modeling. With that starting point, this study first develops a model that supports a premise that shifts in underlying supply can be inferred from shifts in the percentage of certified math teachers employed when (a) salaries are constrained to be below market clearing salaries and (b) uncertified or “out-of-field” certified teachers can compete as substitutes for certified math teachers. The study then tests the plausibility of the model using data from Texas and in so doing provides preliminary estimates of the extent to which a school or school district's MSP participation affected the supply of certified math teaches available to that school or district. The results, although inconclusive on the question of the labor supply effects of MSP participation by a school or school district, do suggest the reasonableness of the model for future work when more appropriate data will be available. 相似文献
75.
Karen E. Mulak Catherine T. Best Michael D. Tyler Christine Kitamura Julia R. Irwin 《Child development》2013,84(6):2064-2078
By 12 months, children grasp that a phonetic change to a word can change its identity (phonological distinctiveness). However, they must also grasp that some phonetic changes do not (phonological constancy). To test development of phonological constancy, sixteen 15‐month‐olds and sixteen 19‐month‐olds completed an eye‐tracking task that tracked their gaze to named versus unnamed images for familiar words spoken in their native (Australian) and an unfamiliar non‐native (Jamaican) regional accent of English. Both groups looked longer at named than unnamed images for Australian pronunciations, but only 19‐month‐olds did so for Jamaican pronunciations, indicating that phonological constancy emerges by 19 months. Vocabulary size predicted 15‐month‐olds' identifications for the Jamaican pronunciations, suggesting vocabulary growth is a viable predictor for phonological constancy development. 相似文献
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Vocational education and training (VET) teachers and trainers have a key role in ensuring that workers in business and industry are upskilled and up-to-date in a rapidly changing industrial, economic and technological environment. It follows that the VET practitioners should themselves keep up to date, not only with industry developments but also with the pedagogical skills needed to embrace technology and adapt to new sites for learning. However, in Australia and other Western nations, continuing professional development for VET practitioners has been spasmodic and not always well supported, in contrast to the ways it has been established and accepted in other professions. This paper examines the professional development approaches of some of those other professions and identifies the key features that might be adopted in any genuine attempt to develop a more purposeful and systematic provision of ongoing learning for teachers and trainers in VET. The paper concludes with a number of recommendations aimed at Australian VET practitioners in particular, but which might be applicable to VET in any developed country. 相似文献
78.
Möller Bernhard Torrance E. Paul Hahn Walter Kruszewski Krzysztof MacIntosh P. de Landsheere Gilbert Vexliard Alexandre Tyler Louise Bemmerlein Anton 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1969,15(4):499-511
International Review of Education - 相似文献
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