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61.
This study examined the development of individual social capital in a distributed learning community. Feld's theory of focused choice predicts that the formation of network ties is constrained by contextual factors that function as foci of activities. In our research, we examined how group assignment and location could function as such foci to influence the development of individual social capital in a distributed learning community. Given that networks with different content flows may possess different properties, we examined two different types of networks—task-related instrumental networks and non-task-related expressive networks. A longitudinal research design was used to evaluate the evolution of networks over time. Hypotheses were tested using a sample of 32 students enrolled in a distributed learning class. The results show strong support for Feld's theory. While serving as foci of activities to organize social interactions, both group assignment and geographic separation can also function to fragment a learning community.  相似文献   
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Cultural Studies of Science Education - Socioscientific Issues (SSI) provide a strong framework for engaging students and teachers in meaningful and relevant scientific discourse in the development...  相似文献   
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ABSTRACT

This study investigated the effects of a 4-week training with hand paddles (HPD) on front-crawl swimming performance (SP), clean swimming speed (SPEED), stroke rate (SR), stroke length (SL) and tethered force (TF). Twenty swimmers (10 men and 10 women) were paired according to performance and gender, and were randomly assigned to control (CON, 22.4 ± 2.3 years) or HPD (21.8 ± 1.9 years) groups. During 4 weeks both groups performed the same training, except for a sprint training set (3 times/week, 10 × 10 strokes all-out, 1-min rest) completed with (HPD = 320 cm2) and without (CON) paddles. Afterwards, both groups performed the same training over a 2-week taper period. SP, SPEED, SR, SL and TF were assessed before (PRE) and after the 4-week period (POST), after the first (T1) and second taper weeks (T2). Swimmers rated their perceived exertion for the sprint training set (RPETS) and the training session for determining internal training load (ITL). SP, SPEED, SR, SL and TF did not change from PRE to POST, T1 and T2. ITL and RPETS were not different between groups. Training 4 weeks with HPD does not affect swimming performance, so the use of HPD remains unsupported in such period.  相似文献   
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It is expected that the demand for gerontological social workers will increase as the elderly population continues to grow. However, many practitioners enter the aging field with little or no formal training. Successful gerontological social work practice requires workers to be knowledgeable and technically competent. Fieldwork plays a critical role in social work students' development and training. This paper describes a specialized social work practicum which instructs graduate social work students in the skills and abilities required to work in contemporary geriatric practice. The setting for the internship, its format, its major goals, and student experiences are described.  相似文献   
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In this study, the authors explore a Canadian field experience model in a bachelor of education program that focuses on mentor‐based relationships between teacher candidates and students at risk of dropping out of high school. They examine teacher candidates’ and at‐risk students’ attitudinal approaches. The model emphasizes praxis and social justice, and the authors argue that it would benefit from a greater emphasis on critical literacy theory. Data were collected through triangulation of Ministry of Education documents, a literature review, program coordinators’ informal reflections and field notes, and interviews. Interview participants were two teacher candidates, three at‐risk students, and three Student Success teachers. The mentoring improved human relations and attendance more than grades for the at‐risk students. The results indicate that at‐risk students feel individually empowered through the mentor‐based model and teacher candidates demonstrate insights into their mentoring relationships.  相似文献   
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This study examined context variables (reporter speculation, multiple viewpoints, and story emphasis) and source variables (anonymous sources and source transparency) in broadcast television coverage of the 2004 Democratic presidential primaries. Primary coverage was compared with coverage of other major stories. Primary coverage was no more focused on conflict than were other major stories. Primary coverage was, however, more focused on winners and losers, and primary reporting was more likely to include reporter speculation. Primary stories were just as likely to include anonymous sources as were other major stories, but primary stories also were more likely than other major stories to fully identify sources.  相似文献   
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