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631.
Marina Lívia Venturini Ferreira Amanda Veiga Sardeli Giovana Vergínia De Souza Valéria Bonganha Lucas Do Carmo Santos Alex Castro 《Journal of sports sciences》2017,35(24):2412-2420
This study investigated the autonomic and haemodynamic responses to different aerobic exercise loads, with and without blood flow restriction (BFR). In a crossover study, 21 older adults (8 males and 13 females) completed different aerobic exercise sessions: low load without BFR (LL) (40% VO2max), low load with BFR (LL-BFR) (40% VO2max + 50% BFR) and high load without BFR (HL) (70% VO2max). Heart rate variability and haemodynamic responses were recorded during rest and throughout 30 min of recovery. HL reduced R–R interval, the root mean square of successive difference of R–R intervals and high frequency during 30 min of recovery at a greater magnitude compared with LL and LL-BFR. Sympathetic–vagal balance increased the values for HL during 30 min of recovery at a greater magnitude when compared with LL and LL-BFR. Post-exercise haemodynamic showed reduced values of double product at 30 min of recovery compared to rest in LL-BFR, while HL showed higher values compared to rest, LL-BFR and LL. Reduced systolic blood pressure was observed for LL-BFR (30 min) compared to rest. Autonomic and haemodynamic responses indicate lower cardiovascular stress after LL-BFR compared to HL, being this method, besides the functional adaptations, a potential choice to attenuate the cardiovascular stress after exercise in older adults. 相似文献
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633.
Little is known about the influence of social context on children's event memory. Across four studies, we examined whether learning that could occur in the absence of a person was more robust when a person was present. Three-year-old children (N = 125) viewed sequential events that either included or excluded an acting agent. In Experiment 1, children who viewed an agent recalled more than children who did not. Experiments 2a and 2b utilized an eye tracker to demonstrate this effect was not due to differences in attention. Experiment 3 used a combined behavioral and event-related potential paradigm to show that condition effects were present in memory-related components. These converging results indicate a particular role for social knowledge in supporting memory for events. 相似文献
634.
Hume C Okely A Bagley S Telford A Booth M Crawford D Salmon J 《Research quarterly for exercise and sport》2008,79(2):158-165
This study sought to determine whether weight status influences the association among children's fundamental movement skills (FMS) and physical activity (PA). Two hundred forty-eight children ages 9-12 years participated. Proficiency in three object-control skills and two locomotor skills was examined. Accelerometers objectively assessed physical activity. Body mass index was calculated to determine weight status. Correlations between physical activity and FMS proficiency were evident among boys and girls. No significant interaction was apparent when examining FMS proficiency scores, PA variables, and weight status. Future studies should examine a broader range of skills and types of activities to better characterize this relationship and to inform the promotion of movement skill proficiency and PA. 相似文献
635.
Amanda McCombs Thomas Lisa Armistead Tracy Kempton Sean Lynch Rex Forehand Sarah Nousiainen Bryan Neighbors Lynne Tannenbaum 《Psychology in the schools》1992,29(4):342-347
The purpose of this study was to examine whether retention of kindergarten and first-grade children is associated with long-term beneficial effects. Thirty-one children who had been retained were compared to 31 children who had similar grades but had never been retained. The dependent measures were grade point average in the second through fifth grades and four teacher-assessed areas of functioning in the fourth and fifth grade: social competence, cognitive competence, externalizing problems, and internalizing problems. The results indicated that retention was not associated with long-term beneficial effects but rather, especially for White children, appeared to be associated with poorer academic and social functioning. Implications and limitations of the study are discussed. 相似文献
636.
Our paper considers a critical juncture in community college leadership as many community college leaders approach retirement. These transitions are inescapable. How will institutional memory (Parker, 2011) be preserved with the passing of the leadership mantel to a new generation? These transitions also impact ways in which leaders influence student success, institutional mission, and the overall health of the institution (Boggs, 2011). We view these leadership transitions through the lens of Appreciative Inquiry (AI). We ask: How might AI be utilized to successfully navigate community college leadership transitions? Examining two cases where AI was applied within higher education environments, we discuss the potential for such a model to effectively address pending leadership changes within the community college environment. These cases illustrate ways in which AI has been applied in different institutions, yet each provides insight into the ways AI may ameliorate knowledge transfer through narrative and storytelling. We suggest that AI has the potential to address multiple facets of leadership transition and facilitate the development of contextual competency. 相似文献
637.
Adam S. Beatty Philip T. Walmsley Paul R. Sackett Nathan R. Kuncel Amanda J. Koch 《Educational Measurement》2015,34(4):31-40
Little is known about the reliability of college grades relative to how prominently they are used in educational research, and the results to date tend to be based on small sample studies or are decades old. This study uses two large databases (N > 800,000) from over 200 educational institutions spanning 13 years and finds that both first‐year and overall college GPA can be expected to be highly reliable measures of academic performance, with reliability estimated at .86 for first‐year GPA and .93 for overall GPA. Additionally, reliabilities vary moderately by academic discipline, and within‐school grade intercorrelations are highly stable over time. These findings are consistent with a hierarchical structure of academic ability. Practical implications for decision making and measurement using GPA are discussed. 相似文献
638.
639.
Convergent and discriminant validity evidence was examined for scores on the Spanish Record Form of the Bracken School Readiness Assessment, Third Edition (BSRA‐3). Participants included a sample of 68 Hispanic, Spanish‐speaking children ages 4 to 5 years enrolled in preschool programs in Puerto Rico. Scores obtained from the BSRA‐3 Spanish Record Form were compared with scores from the Nonverbal Index of the Kaufman Assessment Battery for Children, Second Edition, and the Preschool and Kindergarten Behavior Scales, Second Edition. As expected, the correlation between school readiness scores and nonverbal intelligence was significant and moderate in the positive direction and the correlations between school readiness scores and behaviors were low. Discriminant validity evidence for BSRA‐3 scores was demonstrated using Steiger's Z test to compare correlations of similar and dissimilar constructs. As hypothesized, significant results emerged. 相似文献
640.
Many teachers report that their preservice training in classroom management was inadequate or ineffective, but little is known about the types of training they receive. In this exploratory study, 157 preservice teachers from throughout the United States were surveyed about the training sources through which they obtained knowledge and skills in classroom management as well as the content and their attitudes toward the training. A majority of students took stand‐alone courses in classroom management, which were reported to provide the most comprehensive content, but the most frequently reported sources were mentoring and fieldwork. Participants reported that a combination of didactic coursework and hands‐on training were associated with the highest sense of preparedness to use classroom management strategies. Implications for future research and school psychological services are discussed. 相似文献