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91.
Zachary M. Gillen Marni E. Shoemaker Brianna D. McKay Joel T. Cramer 《Research quarterly for exercise and sport》2019,90(2):227-233
Purpose: The purpose of this study was to determine magnitudes of differences for anthropometric and athletic performance scores between high school and elite college-level American football players. Method: Participants included high school-age (n = 3,666) athletes who participated in American football combines, as well as elite college-level (n = 5,537) athletes who participated in the National Football League (NFL) scouting combine. Combine data included position; height; weight; 10-, 20-, and 40-yard dash; pro-agility (PA); L-cone drill (LC); vertical jump (VJ); and broad jump (BJ). Athletes were separated into their respective position group, defensive back (DB), wide receiver (WR), linebacker (LB), quarterback (QB), running back (RB), tight end (TE), defensive line (DL), and offensive line (OL) for analysis of performance differences. Percent differences for each dependent variable were calculated to quantify magnitudes of differences. Results: NFL combine participants scored 3% to 25% better on all measurements, with the largest differences between weight and VJ (14%–25%). Conclusion: The largest measurement-specific differences between high school-age and elite college-level American football players were body size and power. Although it may seem intuitive that elite college-level players would perform better, these data provide a unique perspective to high school players, parents, and coaches, giving new information to use when designing measurement-specific athletic development programs. Thus, strength and conditioning professionals may benefit from emphasizing increases in muscle mass and power output in strength and conditioning programs. 相似文献
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The emergence of vibrant research communities of computer scientists in Kenya and Uganda has occurred in the context of neoliberal privatization, commercialization, and transnational capital flows from donors and corporations. We explore how this funding environment configures research culture and research practices, which are conceptualized as two main components of a research community. Data come from a three-year longitudinal study utilizing interview, ethnographic and survey data collected in Nairobi and Kampala. We document how administrators shape research culture by building academic programs and training growing numbers of PhDs, and analyze how this is linked to complicated interactions between political economy, the epistemic nature of computer science and sociocultural factors like entrepreneurial leadership of key actors and distinctive cultures of innovation. In a donor-driven funding environment, research practice involves scientists constructing their own localized research priorities by adopting distinctive professional identities and creatively structuring projects. The neoliberal political economic context thus clearly influenced research communities, but did not debilitate computing research capacity nor leave researchers without any agency to carry out research programs. The cases illustrate how sites of knowledge production in Africa can gain some measure of research autonomy, some degree of global competency in a central arena of scientific and technological activity, and some expression of their regional cultural priorities and aspirations. Furthermore, the cases suggest that social analysts must balance structure with culture, place and agency in their approaches to understanding how funding and political economy shape scientific knowledge. 相似文献
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Zachary W. Goldman San Bolkan Alan K. Goodboy 《Journal of Intercultural Communication Research》2014,43(1):45-63
This study investigates the relationship between teacher confirmation behaviors (i.e., responding to questions, demonstrating interest, interactive teaching style) and student learning outcomes (i.e., affective learning, student motivation) across three cultures: Turkey, China, and the United States. Results indicates the confirmation-learning relationship was significantly stronger in the United States and China than it was in Turkey. The findings from this study suggest that teacher confirmation is an effective teaching behavior that transcends cultures, yet the magnitude of its importance on student learning appears more relevant in America, and to a lesser extent in China, than it is in Turkey. 相似文献
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An increase in the period over which a muscle generates force can lead to the generation of greater force and, therefore, for example in jumping, to greater jump height. The aim of this study was to examine the effect of squat depth on maximum vertical jump performance. We hypothesized that jump height would increase with increasing depth of squat due to the greater time available for the generation of muscular force. Ten participants performed jumps from preferred and deep squat positions. A computer model simulated jumps from the different starting postures. The participants showed no difference in jump height in jumps from deep and preferred positions. Simulated jumps produced similar kinematics to the participants' jumps. The optimal squat depth for the simulated jumps was the lowest position the model was able to jump from. Because jumping from a deep squat is rarely practised, it is unlikely that these jumps were optimally coordinated by the participants. Differences in experimental vertical ground reaction force patterns also suggest that jumps from a deep squat are not optimally coordinated. These results suggest there is the potential for athletes to increase jump performance by exploiting a greater range of motion. 相似文献
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Zachary Braiterman 《Religious education (Chicago, Ill.)》2013,108(1):105-106
Jacob Neusner's critique of my original essay, “Teaching Jewish Studies in a Radically Gentile Space: Some Personal Reflections,” fails to recognize it as a piece of self‐referential reflection that does not represent how the course was actually taught. That said, Neusner and I pursue conflicting interpretations of Judaism, with Neusner preferring to emphasize the pure over my emphasis on the impure 相似文献
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Christopher D. Slaten Zachary M. Elison Eric D. Deemer Hayley A. Hughes Daniel A. Shemwell 《Journal of Experimental Education》2013,81(4):633-651
Although belonging in K–12 school settings has been abundantly researched and clearly defined, at the university level the research and construct definition is still in its infancy (Tovar & Simon, 2010). The present study sought to develop and validate an instrument measuring university belonging—the University Belonging Questionnaire (UBQ). In Study 1, an exploratory factor analysis was conducted with a sample of university students (N = 421), finding a reliable scale with three factors: (a) university affiliation, (b) university support and acceptance, and (c) faculty and staff relations. In Study 2, a confirmatory factor analysis on a new sample (N = 290), confirmed the final 3-factor, 24-item model. Further analyses demonstrated the convergent and incremental validity of the UBQ, as it positively correlated with measures of perceived social support, social connectedness, and general belonging. Implications and recommendations for university belonging research are discussed. 相似文献
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This investigation explores the influence of perceptions of socialization tactics' use and communication relationships on employees at the initiation of and 4 months into an organizational restructuring. Results of this longitudinal investigation reveal that employees (N = 72) report considerable changes in perceptions of organizational socialization/resocialization efforts. Results also indicate that both perceptions of socialization tactics' use and communication relationships contribute to decreased role ambiguity and role conflict and increased commitment at the initiation of the restructuring and four months later. However, the influence of these factors on the dependent variables changes over time. These findings are discussed in relation to recent research on organizational entry and change, and suggestions are made for future research. 相似文献
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Zachary Stephen Rossetti 《International Journal of Inclusive Education》2013,17(12):1259-1272
This is an interpretivist qualitative study that explores the contexts and dynamics of friendships between three groups of young adults; each group includes an individual with autism or severe disability and nondisabled high school students. The most prominent finding identified in the data was that educators affected opportunities for social interactions between students with and without autism or severe disability. Educator influence on social participation included factors that decreased interactions, such as missed opportunities for social interactions and social consequences of academic supports. Educator influence also included factors that increased interactions, specifically four strategies to increase social interactions and facilitate possible friendships or maintain existing friendships between students with and without autism or severe disability. 相似文献