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201.
202.
Helena Ackesjö Per Lindqvist Ulla Karin Nordänger 《Scandinavian Journal of Educational Research》2013,57(6):884-898
In 2014, a newly formed group of teachers graduated from Swedish universities. In addition to their qualification as leisure-time pedagogues, their degree includes teaching practical/aesthetical subjects in compulsory school. This group of teachers thus has to relate to dual professional identities and to maintain a balance between the socially oriented leisure-time centres and a goal- and results-driven school. In this article we describe their first two years after graduation, trying to get hold of their negotiation of professional identities and orientation in the professional landscape. Results shows that the graduates try to balance own ideals and hybrid professional intentions against traditional professional identities and labour market conditions and that position in a liminal phase might be crucial for the outcome. 相似文献
203.
204.
In recent years, HIV-positive athletes hove increasingly made the headlines. leading to questions and concerns regarding HIV transmission through sport. Based on limited understanding and irrational fear. athletes have been excluded from sport competitions or encouraged to retire prematurely. In other cases. they have been subjected to random, mandatory HIV testing prior to sport competition. Because HIV/AIDS is a medical and social problem, information from health-related sources is included in this analysis, including the modes of HIV transmission. This analysis focuses on further issues related to rights, obligations, risks, privacy, and policy. The growing dilemma for the sport professionals to weigh an athlete's right to privacy against their own duty to warn in the decision-making process is examined, with a discussion on mandatory HIV testing for athletes. Guidelines based on principles of medical ethics are offered to aid sport practitioners in providing all athletes with the best possible service. 相似文献
205.
According to the skill transfer concept, people may use general technological skills to solve new problems. To test this concept, a technological transfer test was included in a randomized controlled-intervention study aimed at the causal relationship between computer use and autonomy of older adults. Older adults with and without exposure to computer training and Internet use and participants without interest in computers were administered this test. On two occasions, participants performed four daily tasks with everyday technological devices. Exposure to a novel technological challenge did not affect the efficiency of, and involvement in, other technological activities. 相似文献
206.
Dr. Karin McCallum 《Clearing house (Menasha, Wis.)》2013,86(6):264-265
Because of the Common Core State Standards there is a renewed emphasis on the importance of visual literacies in today's classrooms. Students need prior knowledge before approaching these types of texts. This article describes the results of one 6th-grade language arts class's engagement in pre-reading prior to viewing a theatrical performance. The study examined whether obtaining background knowledge through print can be used effectively to increase the knowledge of drama, visual literacy, and nonprint text. The study utilized an experimental control-group design; t-test results revealed that using pre-reading as a comprehension strategy is more effective than just viewing drama. In addition, factorial ANOVA results showed that the treatment did not signficantly interact with reading ability or gender. Overall, this 6th-grade class's comprehension skills were enhanced with the help of pre-reading. This study indicates that pre-reading is a powerful strategy that can build background knowledge and ultimately increase comprehension of visual literacy for all students, and it and offers insight for a larger study. 相似文献
207.
Carla Gerhard Andreas G. Klein Karin Schermelleh-Engel Helfried Moosbrugger Jana Gäde Holger Brandt 《Structural equation modeling》2013,20(2):276-287
This article investigates likelihood-based difference statistics for testing nonlinear effects in structural equation modeling using the latent moderated structural equations (LMS) approach. In addition to the standard difference statistic TD, 2 robust statistics have been developed in the literature to ensure valid results under the conditions of nonnormality or small sample sizes: the robust TDR and the “strictly positive” TDRP. These robust statistics have not been examined in combination with LMS yet. In 2 Monte Carlo studies we investigate the performance of these methods for testing quadratic or interaction effects subject to different sources of nonnormality, nonnormality due to the nonlinear terms, and nonnormality due to the distribution of the predictor variables. The results indicate that TD is preferable to both TDR and TDRP. Under the condition of strong nonlinear effects and nonnormal predictors, TDR often produced negative differences and TDRP showed no desirable power. 相似文献
208.
In two studies dissociations between reading and spelling skills were examined. Study 1 reports equally high prevalence rates for isolated deficits in reading (7%) or spelling (6%) in a representative sample (N = 2,029) of German-speaking elementary school children. In Study 2, children with isolated deficits were presented with the same words to read and spell. The double dissociation was replicated. Good readers/poor spellers named pseudohomophones as quickly as their corresponding words, and their phonological awareness skills were adequate, suggesting that their reading might be based on highly efficient decoding procedures. Poor readers/good spellers showed slow word naming and a clear slowing when reading pseudohomophones suggesting a reliance on intact orthographic representations in word reading. A deficit in rapid automatized naming in this group suggests problems in fast visual–verbal access. The profile of poor readers/poor spellers fits the double-deficit group in Wolf and Bowers's (1999) dyslexia theory. 相似文献
209.
Peter Larsson Lennart Burlin Erkki Jakobsson Karin Henriksson-Larsen 《Journal of sports sciences》2013,31(7):529-535
The aim of this study was to determine the physiological responses to orienteering by examining the interrelationships between the information provided by a differential global positioning system (dGPS) about an orienteer's route, speed and orienteering mistakes, portable metabolic gas analyser data during orienteering and data from incremental treadmill tests. Ten male orienteers completed a treadmill threshold test and a field test; the latter was performed on a 4.3 km course on mixed terrain with nine checkpoints. The anaerobic threshold, threshold of decompensate . dmetabolic acidosis, respiratory exchange ratio, onset of blood lactate accumulation and peak oxygen uptake (V O2peak ) were determined from the treadmill test. Time to complete the course, total distance covered, mean speed, distance and timing of orienteering mistakes, mean oxygen uptake, mean relative heart rate, mean respiratory exchange ratio and mean running economy were computed from the dGPS data and metabolic gas analyser data. Correlation analyses showed a relationship between a high anaerobic threshold a . nd few orienteering mistakes ( r = - 0.64, P ? 0.05). A high threshold of decompensated metabolic acidosis and V O2peak were related to a fast overall time ( r = - 0.70 to- 0.72, P ? 0.05) and high running speed ( r = 0.64 to 0.79, P ? 0.05 and P ? 0.01, respectively), and were thus the best predictors of performance. 相似文献
210.
Eva V. Monsma Karin A. Pfeiffer Robert M. Malina 《Research quarterly for exercise and sport》2013,84(3):417-422
ABSTRACTPurpose: Maximal heart rate (MHR) is an important physiologic tool for prescribing and monitoring exercise in both clinical and athletic settings. However, prediction equations developed in adults may have limited accuracy in youth. The purpose of this study was to systematically review and analyze the available evidence regarding the validity of commonly used age-based MHR prediction equations among children and adolescents. Methods: Included articles were peer-reviewed, published in English, and compared measured to predicted MHR in male and female participants <18 years old. The standardized mean difference effect size (ES) was used to quantify the accuracy of age-predicted MHR values and a priori moderators were examined to identify potential sources of variability. Results: The cumulative results of 20 effects obtained from seven articles revealed that prediction equations did not accurately estimate MHR (ES= 0.44, p < .05) by 6.3 bpm (bpm). Subgroup analyses indicated that the Fox equation (MHR = 220–age) overestimated MHR by 12.4 bpm (ES = 0.95, p < .05), whereas the Tanaka equation (MHR = 208–0.7*age) underestimated MHR by 2.7 bpm (ES = ?0.34, p < .05). Conclusions: Age-based MHR equations derived from adult populations are not applicable to children. However, if the use of age-based equations cannot be avoided, we recommend using the Tanaka equation, keeping in mind the range of error reported in this study. Future research should control for potential pubertal influences on sympathetic modulation during exercise to facilitate the development of more age-appropriate methods for prescribing exercise intensity. 相似文献