首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   25806篇
  免费   451篇
  国内免费   254篇
教育   17408篇
科学研究   3098篇
各国文化   240篇
体育   1773篇
综合类   512篇
文化理论   102篇
信息传播   3378篇
  2022年   202篇
  2021年   444篇
  2020年   428篇
  2019年   450篇
  2018年   591篇
  2017年   635篇
  2016年   577篇
  2015年   610篇
  2014年   918篇
  2013年   3889篇
  2012年   1128篇
  2011年   1202篇
  2010年   1082篇
  2009年   1039篇
  2008年   1071篇
  2007年   1112篇
  2006年   1128篇
  2005年   937篇
  2004年   565篇
  2003年   575篇
  2002年   514篇
  2001年   606篇
  2000年   455篇
  1999年   398篇
  1998年   242篇
  1997年   215篇
  1996年   237篇
  1995年   186篇
  1994年   177篇
  1993年   158篇
  1992年   240篇
  1991年   214篇
  1990年   242篇
  1989年   219篇
  1988年   177篇
  1987年   185篇
  1986年   191篇
  1985年   177篇
  1984年   183篇
  1983年   169篇
  1982年   136篇
  1981年   136篇
  1980年   132篇
  1979年   190篇
  1978年   160篇
  1977年   112篇
  1976年   119篇
  1975年   111篇
  1973年   104篇
  1971年   116篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
《碛砂藏》的开雕时间为南宋嘉定九年(1216)。此次普查,统计出陕西省图书馆藏《碛砂藏》共5646卷,计5127册,存经1396部,其藏量在国内位居第一。所存扉画3759幅,共计10种,在普查中,发现了两幅罕见扉画,对10种库画择要做了探讨研究。同时,提出了若干疑问。  相似文献   
32.
本文分析了市场经济对学校体育的深刻影响及学校体育改革面临的新问题,进而提出更新思想观念,加大对体育的投入,改善体育设施,提高教师待遇,扩展有偿服务等一系列对策。  相似文献   
33.
The aim was to examine cross-cultural variation in linguistic responsiveness to young children in 10 English-speaking mother–child dyads and 10 Italian-speaking mother– child dyads. All 20 children were late talkers who possessed delays in expressive vocabulary development but age-appropriate cognitive and receptive language skills. Dyads were filmed in 15 minute free play contexts, which were transcribed and coded for measures of maternal linguistic input (e.g. rate, MLU, labels, expansions) and child language productivity (e.g. utterances, different words used). The results revealed that the Italian mothers used more utterances, spoke more quickly and used a more diverse vocabulary than the Canadian mothers. The Italian children mirrored their mothers and also used more utterances and a more diverse vocabulary than the Canadian children. Mothers in both groups used similar percentages of responsive labels and expansions. However, Italian mothers responded to fewer of their children's vocalisations, using a smaller percentage of imitations and interpretations than the Canadian mothers. Correlations between maternal input and children's language productivity revealed that contingent language measures (e.g. imitations, interpretations, expansions) were related to high levels of productivity in children in both cultural groups. The results support the use of language interventions based on increasing maternal responsiveness for these children at the one-word stage of language development. They also point to differences that may be culturally based. For example, Italian mothers use faster rates of interaction and appear to have higher expectations for their children's verbal participation in interaction. This is reflected in higher rates of language production from their children, even though children in both cultural groups have similar vocabulary sizes.  相似文献   
34.
试论新时期体育教师基本素质的时代特征   总被引:2,自引:0,他引:2  
教师素质是教师在教育教学活动中表现出来的,决定其教学效果并对学生身心发展具有直接和间接影响的心理品质的总和.教师素质是一个不断变化的概念,不同时期,不同国家对于教师素质的要求有所不同,全面发展教师的综合素质,是社会发展的必然.  相似文献   
35.
CSSCI与科学学类源期刊学术影响力初步分析   总被引:5,自引:0,他引:5  
姜春林 《情报学报》2002,21(4):476-480
本文介绍了CSSCI及其基本功能 ,尤其对于合理评价我国人文社会科学研究具有重要意义。以 8种科学学类CSSCI源期刊为对象 ,利用CSSCI生成的影响因子等部分指标和相应数据 ,初步分析了该类期刊的学术影响力。  相似文献   
36.
An investigation has been undertaken at St Andrew’s church, Walpole St Andrew, Norfolk, to establish the underlying causes of the observed stone decay to the upper parts of the six stone piers. The stone decay was first recorded in the early 1930s. The salt-contaminated masonry within the church has been shown to undergo severe salt decay during the summer, with little damage occurring over the winter months. The south aisle piers have been shown to decay 2.5 times faster than the north aisle piers. Although crystallization–hydration cycles have been identified, the rate of decay is at its greatest when the cycling is relatively infrequent. This was not the expected trend. Furthermore, it has been shown that during extended periods where the ambient relative humidity is less than 75%, the rate of decay reaches a maximum. It is the length of this ‘drying’ period that apparently has the greatest influence on the rate of decay and could explain the significant difference in the rate of decay between the south and north aisle piers. The results have serious implications for passive conservation, where it is often recommended to lower the ambient relative humidity to well below the equilibrium relative humidity of the salt contaminant, to avoid crystallization–hydration cycles. Since, at the time of building, the church was situated on the coast, it is possible that the sodium chloride contamination occurred during the building process (1440–1520), particularly since the area was prone to sea-flooding at this time. Alternatively, the salt could have been applied as a treatment during the general restoration of 1897. Whatever the source of the salt, it seems likely that the ambient environment was changed by the insertion of a sealed floor in 1897, which could account for the onset of the salt decay.  相似文献   
37.
38.
我国著作权法的修改及其对图书情报工作的影响   总被引:14,自引:0,他引:14  
江向东 《情报学报》2003,22(4):500-506
本文分析了我国著作权法修改的原因,介绍了著作权法修改的过程,评述了新著作权法的主要内容,分析了新著作权法对图书馆情报工作的影响.  相似文献   
39.
Fielding H. Garrison's paper "The medical periodical and the scientific society" cited the Buffalo Medical Journal in the company of eminent periodicals published in Berlin, Boston, and Edinburgh. This article provides an overview of the Journal and places it in context of 19th-century medical journalism. The Journal is assessed in terms of original scientific contributions and as a source of social and local history.  相似文献   
40.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号