全文获取类型
收费全文 | 115303篇 |
免费 | 1989篇 |
国内免费 | 1658篇 |
专业分类
教育 | 82768篇 |
科学研究 | 12963篇 |
各国文化 | 177篇 |
体育 | 8728篇 |
综合类 | 7724篇 |
文化理论 | 92篇 |
信息传播 | 6498篇 |
出版年
2024年 | 58篇 |
2023年 | 324篇 |
2022年 | 1419篇 |
2021年 | 2546篇 |
2020年 | 3144篇 |
2019年 | 2134篇 |
2018年 | 1144篇 |
2017年 | 1229篇 |
2016年 | 1516篇 |
2015年 | 3211篇 |
2014年 | 7986篇 |
2013年 | 7781篇 |
2012年 | 9703篇 |
2011年 | 9907篇 |
2010年 | 7134篇 |
2009年 | 6280篇 |
2008年 | 7063篇 |
2007年 | 8271篇 |
2006年 | 8054篇 |
2005年 | 6860篇 |
2004年 | 6038篇 |
2003年 | 5260篇 |
2002年 | 4252篇 |
2001年 | 3325篇 |
2000年 | 1910篇 |
1999年 | 721篇 |
1998年 | 445篇 |
1997年 | 291篇 |
1996年 | 290篇 |
1995年 | 150篇 |
1994年 | 159篇 |
1993年 | 93篇 |
1992年 | 65篇 |
1991年 | 25篇 |
1990年 | 23篇 |
1989年 | 26篇 |
1988年 | 5篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1985年 | 18篇 |
1984年 | 12篇 |
1983年 | 11篇 |
1982年 | 18篇 |
1981年 | 9篇 |
1980年 | 5篇 |
1979年 | 5篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1976年 | 9篇 |
1957年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
范听川 《福建工程学院学报》2004,2(3):369-371
分析了民族精神的涵义,论证了弘扬和培育中华民族精神的紧迫性与重要性,探讨了弘扬和培育中华民族精神的新途径。 相似文献
992.
贺建平 《十堰职业技术学院学报》2007,20(4):19-20
高职院校中转化差生工作是一项重要工作,教师要用爱心去感化差生,用真诚去关爱差生,对他们理解尊重,与他们平等交流,就一定能促使他们向好的方向转化。 相似文献
993.
1 Introduction Molten salts are considered to be used as fluid tar-gets in the nuclear incineration of transuranic elementswith proto accelerators .The molten salts are also usedas the media in high temperature chemical reprocess-ing of spent nuclear fuel of fast reactors .The phase di-agrams of rare earth metal halides in combination withalkali metal halide systems are of pri me i mportance inapplication. The thermodynamic properties and phase diagramsof the DyCl3-MClnsystems ( M =alkali or… 相似文献
994.
胡锦涛关于社会主义荣辱观的重要论述,导向鲜明,寓意深刻,对形成良好的社会风气、树立良好社会道德风尚,进一步创造安定和谐的社会环境,正显现出愈来愈巨大的作用.在全社会树立社会主义荣辱观,有赖于有效的教育.形成对社会主义荣辱观的认同是教育取得实效的前提.社会主义荣辱观教育要遵循科学的教育规律,一以贯之地坚持下去才能取得实效. 相似文献
995.
党的十四届六中全会作出了加强精神文明建设的《决议》,江泽民同志在多种场合、多次会议,一再强调“要把精神文明建设提高到更突出的位置”,“精神文明重在建设”。本文依据这一精神,试图从社会发展的宏观角度,探讨社会主义精神文明建设最基本的六个方面的问题。 相似文献
996.
美国职业技术教育的创新融资模式运用了"社会影响力债券"和"为成功付费"的融资组合,实现了两者优势互补。社会创新融资模式在设计理念、基本原理和具体操作上更加符合职业技术教育特点,推动了职业技术教育的公私合作模式变革和转型升级。在创新融资模式运行中,人力资源与劳动就业部门的协调和联结作用尤为关键,全方位的数据和信息服务承担着重要角色,同时最大程度上对地方政府、学校与社会机构进行放权和赋能,这些做法共同形成了以融资为主线的公私合作新格局。 相似文献
997.
998.
The purpose of this study was to investigate the interaction of foot strike and common speeds on sagittal plane ankle and knee joint kinetics in competitive rear foot strike (RFS) runners when running with a RFS pattern and an imposed forefoot strike (FFS) pattern. Sixteen competitive habitual male RFS runners ran at two different speeds (i.e. 8 and 6?min?mile?1) using their habitual RFS and an imposed FFS pattern. A repeated measures analysis of variance was used to assess a potential interaction between strike pattern and speed for selected ground reaction force (GRF) variables and, sagittal plane ankle and knee kinematic and kinetic variables. No foot strike and speed interaction was observed for any of the kinetic variables. Habitual RFS yielded a greater loading rate of the vertical GRF, peak ankle dorsiflexor moment, peak knee extensor moment, peak knee eccentric extensor power, peak dorsiflexion and sagittal plane knee range of motion compared to imposed FFS. Imposed FFS yielded greater maximum vertical GRF, peak ankle plantarflexor moment, peak ankle eccentric plantarflexor power and sagittal plane ankle ROM compared to habitual RFS. Consistent with previous literature, imposed FFS in habitual RFS reduces eccentric knee extensor and ankle dorsiflexor involvement but produce greater eccentric ankle plantarflexor action compared to RFS. These acute differences between strike patterns were independent of running speeds equivalent to typical easy and hard training runs in competitive male runners. Current findings along with previous literature suggest differences in lower extremity kinetics between habitual RFS and imposed FFS running are consistent among a variety of runner populations. 相似文献
999.
Martin Weiss Alexandra Newman Ceri Whitmore Stephan Weiss 《European Journal of Sport Science》2016,16(4):393-401
Sprint and distance running have experienced remarkable performance improvements over the past century. Attempts to forecast running performances share an almost similarly long history but have relied so far on relatively short data series. Here, we compile a comprehensive set of season-best performances for eight Olympically contested running events. With this data set, we conduct (1) an exponential time series analysis and (2) a power-law experience curve analysis to quantify the rate of past performance improvements and to forecast future performances until the year 2100. We find that the sprint and distance running performances of women and men improve exponentially with time and converge at yearly rates of 4% ± 3% and 2% ± 2%, respectively, towards their asymptotic limits. Running performances can also be modelled with the experience curve approach, yielding learning rates of 3% ± 1% and 6% ± 2% for the women's and men's events, respectively. Long-term trends suggest that: (1) women will continue to run 10–20% slower than men, (2) 9.50 s over 100 m dash may only be broken at the end of this century and (3) several middle- and long-distance records may be broken within the next two to three decades. The prospects of witnessing a sub-2 hour marathon before 2100 remain inconclusive. Our results should be interpreted cautiously as forecasting human behaviour is intrinsically uncertain. The future season-best sprint and distance running performances will continue to scatter around the trends identified here and may yield unexpected improvements of standing world records. 相似文献
1000.
Lee Ingle Ashlie Stephenson Gavin R. Sandercock 《European Journal of Sport Science》2016,16(8):1187-1196
The aim of the study was to compare and contrast habitual physical activity (PA) profiles and muscular fitness in schoolchildren from northern and southern regions of England. Data were collected from two secondary schools in the north east (NE) of England. The study procedures followed methods employed by the East of England Healthy Hearts Study in 10–16-year-old boys and girls based in the south east (SE) region of England and data were compared. Habitual physical activity (PAQ-A), vertical jump test, and hand-grip (HG) strength were assessed. We converted raw scores from all assessments to age- and sex-normalised z-scores. We recruited 597 children (58% boys) in the NE and compared findings to 597 age- and sex-matched boys and girls from the SE. Boys in the SE had significantly stronger HG scores, jumped higher, were more powerful (mean peak power: 2131?W vs. 1782?W; P?0.0001), and reported being more physically active (mean PAQ-A: 2.9 vs. 2.5; P?0.0001) than their male counterparts in the NE. In girls, the opposite trend was evident. Girls from the NE of England had a higher HG score, jumped higher, and were more powerful (mean peak power: 2114?W vs. 1839?W; P?.0001) than their peers from the SE. Regional variations in the habitual PA profiles and muscular fitness of schoolchildren from the SE and NE of England do exist. The systematic surveillance of children’s PA and fitness profiles throughout England would help identify regional inequalities on a larger scale. 相似文献