全文获取类型
收费全文 | 24925篇 |
免费 | 339篇 |
国内免费 | 72篇 |
专业分类
教育 | 17910篇 |
科学研究 | 2110篇 |
各国文化 | 258篇 |
体育 | 2052篇 |
综合类 | 50篇 |
文化理论 | 172篇 |
信息传播 | 2784篇 |
出版年
2021年 | 245篇 |
2020年 | 339篇 |
2019年 | 507篇 |
2018年 | 710篇 |
2017年 | 752篇 |
2016年 | 677篇 |
2015年 | 459篇 |
2014年 | 636篇 |
2013年 | 4857篇 |
2012年 | 618篇 |
2011年 | 631篇 |
2010年 | 555篇 |
2009年 | 529篇 |
2008年 | 562篇 |
2007年 | 562篇 |
2006年 | 552篇 |
2005年 | 498篇 |
2004年 | 380篇 |
2003年 | 392篇 |
2002年 | 346篇 |
2001年 | 495篇 |
2000年 | 418篇 |
1999年 | 388篇 |
1998年 | 218篇 |
1997年 | 218篇 |
1996年 | 272篇 |
1995年 | 209篇 |
1994年 | 236篇 |
1993年 | 215篇 |
1992年 | 338篇 |
1991年 | 340篇 |
1990年 | 351篇 |
1989年 | 335篇 |
1988年 | 270篇 |
1987年 | 287篇 |
1986年 | 303篇 |
1985年 | 297篇 |
1984年 | 271篇 |
1983年 | 290篇 |
1982年 | 237篇 |
1981年 | 228篇 |
1980年 | 216篇 |
1979年 | 340篇 |
1978年 | 266篇 |
1977年 | 212篇 |
1976年 | 219篇 |
1975年 | 182篇 |
1974年 | 183篇 |
1973年 | 159篇 |
1971年 | 180篇 |
排序方式: 共有10000条查询结果,搜索用时 3 毫秒
211.
In this article, the authors borrow from anti-oppressive education theory for its potential to disrupt how students visually conceive sporting bodies and to problematize the teaching and learning of these bodies within undergraduate physical education (PE) programs. Fourteen photo stories produced by students enrolled in PE programs at two universities were analysed using a semiotic approach to excavate the emergent themes of sporting bodies from the narratives. Relying on Kumashiro's anti-oppressive educational theoretical framework, the authors found that most of stories reified discursive practices that (re)produce gender oppression in sport. Despite these findings, the authors also discovered anti-oppressive pedagogies are useful for teaching against the body oppressions conveyed in the photo stories. How anti-oppressive education informs other areas of PE should be examined in the future. 相似文献
212.
213.
Eric T. Trexler Erica J. Roelofs Katie R. Hirsch Meredith G. Mock 《European Journal of Sport Science》2016,16(6):702-710
Caffeine and coffee are widely used among active individuals to enhance performance. The purpose of the current study was to compare the effects of acute coffee (COF) and caffeine anhydrous (CAF) intake on strength and sprint performance. Fifty-four resistance-trained males completed strength testing, consisting of one-rep max (1RM) and repetitions to fatigue (RTF) at 80% of 1RM for leg press (LP) and bench press (BP). Participants then completed five, 10-second cycle ergometer sprints separated by one minute of rest. Peak power (PP) and total work (TW) were recorded for each sprint. At least 48 hours later, participants returned and ingested a beverage containing CAF (300?mg flat dose; yielding 3–5?mg/kg bodyweight), COF (8.9?g; 303?mg caffeine), or placebo (PLA; 3.8?g non-caloric flavouring) 30 minutes before testing. LP 1RM was improved more by COF than CAF (p?=?.04), but not PLA (p?=?.99). Significant interactions were not observed for BP 1RM, BP RTF, or LP RTF (p?>?.05). There were no sprint?×?treatment interactions for PP or TW (p?>?.05). 95% confidence intervals revealed a significant improvement in sprint 1 TW for CAF, but not COF or PLA. For PLA, significant reductions were observed in sprint 4 PP, sprint 2 TW, sprint 4 TW, and average TW; significant reductions were not observed with CAF or COF. Neither COF nor CAF improved strength outcomes more than PLA, while both groups attenuated sprint power reductions to a similar degree. Coffee and caffeine anhydrous may be considered suitable pre-exercise caffeine sources for high-intensity exercise. 相似文献
214.
Eric C. Haakonssen Martin Barras Louise M. Burke David G. Jenkins David T. Martin 《European Journal of Sport Science》2016,16(6):645-653
The aims of this study were to describe normative values and seasonal variation of body composition in female cyclists comparing female road and track endurance cyclists, and to validate the use of anthropometry to monitor lean mass changes. Anthropometric profiles (seven site skinfolds) were measured over 16 years from 126 female cyclists. Lean mass index (LMI) was calculated as body weight?×?skinfolds?x. The exponent (x) was calculated as the slope of the natural logarithm of body weight and skinfolds. Percentage changes in LMI were compared to lean mass changes measured using dual-energy X-ray absorptiometry (DXA) in a subset of 25 road cyclists. Compared to sub-elite and elite cyclists, world class cyclists were (mean [95% CI]) 1.18?kg [0.46, 1.90] and 0.60?kg [0.05, 1.15] lighter and had skinfolds that were 7.4?mm [3.8, 11.0] and 4.6?mm [1.8, 7.4] lower, respectively. Body weight (0.41?kg [0.04, 0.77]) and skinfolds (4.0?mm [2.1, 6.0]) were higher in the off-season compared to the early-season. World class female road cyclists had lower body weight (6.04?kg [2.73, 9.35]) and skinfolds (11.5?mm [1.1, 21.9]) than track endurance cyclists. LMI (mean exponent 0.15 [0.13, 0.18]) explained 87% of the variance in DXA lean mass. In conclusion, higher performing female cyclists were lighter and leaner than their less successful peers, road cyclists were lighter and leaner than track endurance cyclists, and weight and skinfolds were lowest early in the season. LMI appears to be a reasonably valid tool for monitoring lean mass changes. 相似文献
215.
This research examines 441 front-page images published in 367 newspapers on the day following the shooting in Paris of 12 people at or near the Charlie Hebdo office. The aim of this study is to understand how mainstream media visually framed responsibility for the Charlie Hebdo massacre and how these visual frames coalesced to represent collective narratives about press freedom. Through a collaborative visual analysis, this study attempts to understand how the selected visual frames worked to communicate the causes, effects, and responses to the massacre and also to press freedom—an ideological construct that news media had a vested interest in advancing. 相似文献
216.
217.
吕为民 《新乡教育学院学报》2007,20(1):80-81
文章在掌握初步《几何画板》的基础上,以理论和实例相结合的方式论述了信息技术作为认知工具在数学教学中的运用,着重于用信息技术来展示数学教学中的思维过程,变抽象思维为形象的动态图画。 相似文献
218.
吕英 《唐山师范学院学报》2006,28(5):31-32
在数学教学中,为了让学生深入地理解有关的概念、定理,牢记公式和法则,适当地举一些反例是十分有效的一种方法。 相似文献
219.
吕英军 《南京晓庄学院学报》2007,23(1):79-83
拜昂是20世纪后半期最具影响力的精神分析思想家和实践者之一,他在个体精神分析和精神分析团体心理学两个领域都有独到的见解。他发现,团体行为是一种无意识水平上的协调过程,而不仅仅是不和谐的争斗。他提出的容纳者模型、理智定向的工作团体和无意识的基本假设等思想对客体关系学派的发展产生了深远的影响。 相似文献
220.
Tarrant County College’s Achieving the Dream transformation has not only changed the college but all who engaged in the initiative. In four years, through ATD TCC became a college with one purpose, one goal, and one focus—student success through data informed decision making. From TCC Chancellor Dr. Erma Johnson Hadley to campus administrators, faculty, and staff, the college embraced the call for systemic change and fully engaged in the step by step process. Personnel throughout the college reported widespread satisfaction with senior leadership and viewed collaborations with colleagues across the district as beneficial and personally rewarding. Tireless endeavors to wholly engage stakeholders, build a culture of evidence, and employ effective student success interventions through ATD not only transformed TCC but ushered the college onto the national stage with Leader College recognition. The college’s next steps include keeping that momentum going and building on what it has accomplished. 相似文献