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   36890篇
  免费   593篇
  国内免费   84篇
教育   26903篇
科学研究   2983篇
各国文化   367篇
体育   2684篇
综合类   75篇
文化理论   260篇
信息传播   4295篇
  2021年   372篇
  2020年   553篇
  2019年   805篇
  2018年   1124篇
  2017年   1230篇
  2016年   1145篇
  2015年   708篇
  2014年   959篇
  2013年   7235篇
  2012年   951篇
  2011年   1028篇
  2010年   839篇
  2009年   802篇
  2008年   880篇
  2007年   848篇
  2006年   814篇
  2005年   718篇
  2004年   595篇
  2003年   542篇
  2002年   576篇
  2001年   725篇
  2000年   640篇
  1999年   595篇
  1998年   347篇
  1997年   363篇
  1996年   403篇
  1995年   338篇
  1994年   348篇
  1993年   314篇
  1992年   486篇
  1991年   480篇
  1990年   512篇
  1989年   493篇
  1988年   444篇
  1987年   405篇
  1986年   412篇
  1985年   472篇
  1984年   424篇
  1983年   404篇
  1982年   314篇
  1981年   324篇
  1980年   293篇
  1979年   402篇
  1978年   355篇
  1977年   289篇
  1976年   269篇
  1975年   225篇
  1974年   210篇
  1973年   240篇
  1971年   207篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
81.
Recent implementation of Nebraska's Standards-based Teacher-led Assessment and Reporting System (STARS) introduced a unique opportunity to examine the benefits and drawbacks of a teacher-led state assessment system. STARS is unique among state assessment systems in that statewide tests are replaced by locally developed assessments designed by teachers. Benefits of this system are found to be greater teacher use of results for instructional planning, greater diagnostic utility of the assessments, and gains in assessment literacy. Disadvantages include the time-consuming and stressful nature of creating localized assessments. Compatibility of STARS with the requirements of the No Child Left Behind Act are discussed.  相似文献   
82.
83.
84.
This article is an overview of the development of education for publishing programs in the U.S. Information and addresses for the main introductory summer programs, the continuing education programs, the degree-granting Masters Programs, and a selection of organizations outside the United States offering courses in publishing are included in the article.  相似文献   
85.
What are the advantages of performance assessment? What are the risks of employing only performance assessments in large-scale testing programs?  相似文献   
86.
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   
87.
1 Introduction New technologies and other developments haye changedthe information seeking behaviors of the academic communityand the general public.Nowhere is this more evident than inthe exponential growth of the World Wide Web and cellularphone usage.Responding to these user needs and newtechnologies,libraries are moving from being InformationWarehouses to becoming Information Portals.Full-text  相似文献   
88.
89.
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   
90.
The author presents a critical review of counselor education literature that has focused on student acquisition of theoretical orientations in order to identify the potential of these practices to facilitate critical self‐reflection and theoretical fit among students. Two reflective, awareness‐based pedagogical models—radical constructivism (E. von Glasersfeld, 1984) and transformative learning (J. Mezirow, 1997)—are also examined. The author concludes by briefly outlining an alternative pedagogical framework called the “Emergence Model,” which may enhance the ability of counselor educators to facilitate self‐reflection and theoretical fit among counseling students.  相似文献   
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