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Alyson Leah Lavigne Roger Wade Chamberlain 《Educational Assessment, Evaluation and Accountability》2017,29(2):179-209
The aim of the current study is to assess school leaders’ perceptions and practices in the context of a new policy that emphasizes teacher evaluation. The study draws from survey data of 606 K-12 school leaders in the USA in a state implementing a new teacher evaluation model under Race to the Top. Findings illustrate that school leaders spent significant time on teacher evaluation. Some felt this was a good investment of time (e.g., rich conversations with teachers), increasing the ability for evaluations to improve instruction. Most, however, perceived the time demands as a cost (e.g., spending longer hours on the job, delegating more tasks to others). School leaders felt very confident in their ability to conduct observations and provide feedback to teachers. The opposite was found for student achievement data. Administrators’ reported preparedness, confidence, and beliefs suggest that barriers exist to using student achievement data to evaluate teachers. Findings suggest that school leaders need resources to build capacity, particularly in accommodating the new time demands of teacher evaluation. Administrators could benefit from professional development that addresses the use and value of student achievement if this measure continues to be a substantial component in teacher evaluation models. 相似文献
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Brian Wade Garrison 《New Review of Academic Librarianship》2013,19(3):291-299
After providing access to over 100 video interviews conducted by a professor with notable entertainers and personalities from film through an institutional repository, an experiment was conducted to discover whether a larger audience could be gained by adding a subset of 32 of these videos to YouTube. The results, over 400,000 views, indicate that libraries should cultivate a mixed method approach to providing access to digital content. 相似文献
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Rebecca M. Kerr Warwick Spinks Anthony S. Leicht Wade Sinclair Louise Woodside 《Journal of sports sciences》2013,31(7):743-749
Abstract The aim of this study was to establish a graded exercise test protocol for determining the peak physiological responses of female outrigger canoeists. Seventeen trained female outrigger canoeists completed two outrigger ergometer graded exercise test protocols in random order: (1) 25 W power output for 2 min increasing by 7.5 W every minute until exhaustion; and (2) 25 W power output for 2 min increasing by 15 W every 2 min to exhaustion. Heart rate and power output were recorded every 15 s. Expired air was collected continuously and sampled for analysis at 15-s intervals, while blood lactate concentration was measured immediately after and 3, 5, and 7 min after exercise. The peak physiological and performance variables examined included peak oxygen uptake ([Vdot]O2peak), minute ventilation, tidal volume, ventilatory thresholds 1 and 2, respiratory rate, respiratory exchange ratio, heart rate, blood lactate concentration, power output, performance time, and time to [Vdot]O2peak. There were no significant differences in peak physiological responses, ventilatory thresholds or performance variables between the two graded exercise test protocols. Despite no significant differences between protocols, due to the large limits of agreement evident between protocols for the peak physiological responses, it is recommended that the same protocol be used for all comparison testing to minimize intra-individual variability of results. 相似文献
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Sharief Hendricks Tiffany van Niekerk Drew Wade Sin Mike Lambert Steve den Hollander James Brown 《Journal of sports sciences》2018,36(5):522-528
The most frequently occurring contact events in rugby union are the tackle and ruck. The ability repeatedly to engage and win the tackle and ruck has been associated with team success. To win the tackle and ruck, players have to perform specific techniques. These techniques have not been studied at the highest level of rugby union. Therefore, the purpose of this study was to identify technical determinants of tackle and ruck performance at the highest level of rugby union. A total of 4479 tackle and 2914 ruck events were coded for the Six Nations and Championship competitions. Relative risk ratio (RR), the ratio of the probability of an outcome occurring when a characteristic was observed (versus the non-observed characteristic), was determined using multinomial logistic regression. Executing front-on tackles reduced the likelihood of offloads and tackle breaks in both competitions (Six Nations RR 3.0 Behind tackle, 95% confidence interval [95% CI]: 1.9–4.6, effect size [ES] = large, P < 0.001); Championship RR 2.9 Jersey tackle, 95% CI: 1.3–6.4, ES = moderate, P = 0.01). Fending during contact increased the chances of offloading and breaking the tackle in both competitions (Six Nations RR 4.5 Strong, 95% CI: 2.2–9.2, ES = large, P = P < 0.001; Championship RR 5.1 Moderate, 95% CI: 3.5–7.4, ES = large, P < 0.001). For the ruck, actively placing the ball increased the probability of maintaining possession (Six Nations RR 2.2, 95% CI: 1.1–4.3, ES = moderate, P = 0.03); Championship RR 4.0, 95% CI: 1.3–11.8, ES = large, P = 0.01). The techniques identified in this study should be incorporated and emphasised during training to prepare players for competition. Furthermore, these techniques need to be added to coaching manuals for the tackle and ruck. 相似文献
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Brian Kliszczewicz Cassie Williamson Emily Bechke Michael McKenzie Wade Hoffstetter 《Journal of sports sciences》2018,36(16):1872-1879
The evaluation of Autonomic Nervous System (ANS) recovery following exercise provides insight into the transient stress placed on the cardiovascular system. High-Intensity Functional Training (HIFT) is a form of intense exercise that is prescribed in various modalities and durations; however, little is known about the influence of HIFT duration on ANS recovery. Ten apparently healthy males (28.1 ± 5.4 yrs) performed two HIFT sessions (<5-minute and 15-minute) in a crossover fashion. ANS activity was measured using plasma Epinephrine (E) and Norepineprine (NE); Heart Rate Variability markers of the log transformed Root Mean Square of Successive Differences (lnRMSSD) and High-Frequency power (lnHF). No trial dependent differences were observed in lnRMSSD (p = 0.822), lnHF (p = 0.886), E (p = 0.078), or NE (p = 0.194). A significant main time effect was observed in both trials with a depression in lnRMSSD and lnHF following the trials (p < 0.05) and recovering by 2-hours post (p = 0.141, p > 0.999) respectively. A trial dependent increase in E and NE occurred immediately post (p < 0.05) and recovered by 1-hour post (p > 0.999, p > 0.999) respectively. The HIFT bouts examined within this study demonstrated similar transient strain of the ANS. 相似文献
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The paper reports the results of a longitudinal case study conducted in Australia and New Zealand. The study compares the reading and comprehension age of children in their fifth and sixth years in school. Reading and comprehension ages of 121 children who had Reading Recovery intervention at age 6 were compared with those of a Comparison group of 121 children, drawn from the same classes who, at age 6 years, had been better performers in literacy. Reading and comprehension assessment was conducted with the use of the Neale Analysis of Reading and analysed by means of a t‐test. Results show that the mean reading age of ex‐Reading Recovery children was nearly 12 months superior to that of the Comparison group and that the mean comprehension age was nearly 13 months superior at very highly significant levels. The results strongly suggest that Reading Recovery tuition at age 6 years enabled the 121 ex‐Reading Recovery children to make greater progress in literacy than children in the Comparison group. 相似文献
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