全文获取类型
收费全文 | 8526篇 |
免费 | 224篇 |
国内免费 | 205篇 |
专业分类
教育 | 5940篇 |
科学研究 | 1530篇 |
各国文化 | 33篇 |
体育 | 617篇 |
综合类 | 629篇 |
文化理论 | 17篇 |
信息传播 | 189篇 |
出版年
2024年 | 2篇 |
2023年 | 20篇 |
2022年 | 72篇 |
2021年 | 103篇 |
2020年 | 136篇 |
2019年 | 145篇 |
2018年 | 78篇 |
2017年 | 109篇 |
2016年 | 149篇 |
2015年 | 219篇 |
2014年 | 498篇 |
2013年 | 568篇 |
2012年 | 638篇 |
2011年 | 702篇 |
2010年 | 545篇 |
2009年 | 475篇 |
2008年 | 503篇 |
2007年 | 649篇 |
2006年 | 643篇 |
2005年 | 566篇 |
2004年 | 445篇 |
2003年 | 424篇 |
2002年 | 358篇 |
2001年 | 304篇 |
2000年 | 231篇 |
1999年 | 98篇 |
1998年 | 61篇 |
1997年 | 58篇 |
1996年 | 42篇 |
1995年 | 38篇 |
1994年 | 17篇 |
1993年 | 15篇 |
1992年 | 14篇 |
1991年 | 9篇 |
1990年 | 7篇 |
1989年 | 10篇 |
1977年 | 1篇 |
1976年 | 3篇 |
排序方式: 共有8955条查询结果,搜索用时 15 毫秒
971.
社会主义政治文明具有自身的特点,即以法治为取向的政治理念,以改革为动力的政治制度建设,以参与和监督为机制的政治行为方式以及以人类文明成果为借鉴、符合中国国情的政治文明模式。建设社会主义政治文明既要把坚持党的领导、发扬人民民主和依法办事结合起来,也要把政治文明建设与物质文明建设和精神文明建设统一起来,使之协调发展。 相似文献
972.
成人教育是非常宽泛的概念,业务涵盖面很广.地方高校成人教育工作务必与时俱进,建设一个既适于自身发展又能满足社会需要的立体化市场,在学习型社会建设中,全面承担起自己的责任,并做出贡献. 相似文献
973.
内生经济增长与我国政府支出结构的调整 总被引:2,自引:0,他引:2
本文从我国政府支出的实际情况出发 ,考察了我国政府支出的规模、支出的方向与我国经济长期稳定增长的关系 ,最后得出在我国目前的情况下 ,继续增加政府支出占GDP的比重 ,同时调整政府支出的结构将有利于我国经济的长期稳定增长的结论 相似文献
974.
Alan Feingold 《Structural equation modeling》2019,26(3):418-429
Multilevel and latent growth modeling analysis (GMA) is often used to compare independent groups in linear random slopes of outcomes over time, particularly in randomized controlled trials. The unstandardized coefficient for the effect of group on the slope from a linear GMA can be transformed into a model-estimated effect size for the group difference at the end of a study. Because effect sizes vary nonlinearly in quadratic GMA, the effect size at the end of a study using quadratic GMA cannot be derived from a single coefficient, and cannot be used to estimate effect sizes at intermediate time points with backward extrapolation. This article formulates equations and associated input commands in Mplus for time-varying effect sizes for quadratic GMA. Illustrative analyses that produced these time-varying effect sizes were presented, and a Monte Carlo study found that bias in the effect sizes and their confidence intervals was ignorable. 相似文献
975.
The dissolved oxygen (DO) level in groundwateris a key parameter forin situbioremediation of con-taminated groundwater. However, due to the poorcontent of DO in groundwater, aerobic microbial deg-radation is difficult to occur in natural condition. Ear-ly work on enhancedin situbioremediation deliveredoxygen to the contaminated aquiferbyspargingairin awell, but the low solubility of oxygen increased thedifficulty and expense of maintaining aerobic condi-tions in groundwater[1]. This problem … 相似文献
976.
余阙是元代后期著名的少数民族作家.他深受儒家文化的熏陶,立身处世以儒家的道德规范约束自己,以忧国忧民为己任.他用汉语创作的散文,能够鲜明地体现其宣扬儒家学说,讲求经世致用的主张,洋溢着积极进取的儒家情怀. 相似文献
977.
张坤玲 《石家庄职业技术学院学报》2002,14(2):42-43
等温等压不可逆相变过程和非等温等压不可逆相变过程状态函数增量可以通过设计途径法求算 ,所设途径中包含有与已知相变焓相应的可逆相变过程 .在标准压力下 ,通过改变温度设计途径 ;在一定温度下 ,通过改变压力设计途径 相似文献
978.
刘丽萍 《教学研究(河北)》2002,25(4):372-374
本论述了高校马克思主义理论课教学应采用“生长教学法”来提高教学实效,提出了生长教学法的三个环节,及在教学中如何运用生长教学法。 相似文献
979.
Basic fibroblast growth factor alleviates brain injury following global ischemia reperfusion in rabbits 总被引:9,自引:0,他引:9
Zhang M Ma YF Gan JX Jiang GY Xu SX Tao XL Hong A Li JK 《Journal of Zhejiang University. Science. B》2005,6(7):637-643
The aim of this study was to explore the protective effect of basic fibroblast growth factor (bFGF) on brain injury following global ischemia reperfusion and its mechanisms. Brain injury following global ischemia was induced by four vessels occlusion and systemic hypotension. Twenty-four rabbits were randomized into three groups: group A, only dissection of vessels; group B, intravenous infusion of normal saline after reperfusion for 6 h; group C, 30 μg/kg bFGF injected intravenously at the onset of reperfusion, then infused with 10 μg/(kg·h) for 6 h. Serum neuron specific enolase (NSE), S-100B, tumor necrosis factor-α(TNF-α), interleukin-1 (IL-1), interleukin-8 (IL-8) were measured before ischemia, 30 min after ischemia, 0.5, 1, 3, 6 h after reperfusion. Brain water content was determined and cerebral histopathological damages were compared. NSE and S-100B were increased 1 h after reperfusion and reached their peaks 6 h after reperfusion, but were much higher in group B than those in group C 3, 6 h after reperfusion. In groups B and C, TNF-a was increased after ischemia and IL-1 and IL-8 were increased significantly 0.5 h after reperfusion, then reached their peaks 6 h, 3 h, 6 h after reperfusion respectively. TNF-a and IL-8 at the time points of 1 h and 3 h and IL-1 at 3 h and 6 h in group C were correspondingly lower than those in group B. These indices in group A were nearly unchanged. There were less severe cerebral histopathological damages in group C compared with group B, but no difference in brain water content. It could be concluded that bFGF alleviates brain injury following global ischemia and reperfusion by down-regulating expression of inflammatory factors and inhibiting their activities. 相似文献
980.
随着我国经济市场化程度的不断提高,社会对职业道德的要求也越来越高。深入分析我国职业道德的现状,探求职业道德建设的意义,指出新时期职业道德建设的有效途径,有助于提高全社会的职业道德水平,促进社会风气的根本好转。 相似文献