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   16824篇
  免费   249篇
  国内免费   54篇
教育   12446篇
科学研究   1171篇
各国文化   174篇
体育   1222篇
综合类   44篇
文化理论   80篇
信息传播   1990篇
  2021年   187篇
  2020年   231篇
  2019年   361篇
  2018年   500篇
  2017年   540篇
  2016年   497篇
  2015年   329篇
  2014年   459篇
  2013年   3355篇
  2012年   453篇
  2011年   464篇
  2010年   411篇
  2009年   396篇
  2008年   421篇
  2007年   386篇
  2006年   410篇
  2005年   360篇
  2004年   254篇
  2003年   247篇
  2002年   225篇
  2001年   369篇
  2000年   290篇
  1999年   253篇
  1998年   162篇
  1997年   153篇
  1996年   168篇
  1995年   140篇
  1994年   150篇
  1993年   137篇
  1992年   213篇
  1991年   210篇
  1990年   235篇
  1989年   217篇
  1988年   176篇
  1987年   185篇
  1986年   191篇
  1985年   177篇
  1984年   181篇
  1983年   170篇
  1982年   136篇
  1981年   137篇
  1980年   133篇
  1979年   190篇
  1978年   163篇
  1977年   115篇
  1976年   120篇
  1975年   113篇
  1974年   99篇
  1973年   107篇
  1971年   118篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
23.
Three supervision modalities (live, delayed review, and verbal reports) in training marital and family counselors are discussed with attention given to goals, supervisory considerations, advantages, and disadvantages of each modality.  相似文献   
24.
Medicine has made increasing use of meta-analysis, largely as a quantitative procedure for combining results of clinical trials. Meta-analysis begins with a comprehensive review of the literature. The next step is a systematic analysis of the quality and content of each study. Finally, results are combined statistically and conclusions are drawn from this new overview of the data. This paper presents a brief historical perspective on the use of meta-analysis in medicine with emphasis on the medical library. The authors conclude that in the future, medical librarians will play a significant role in the application of this useful technique.  相似文献   
25.
Chaos theory, informational needs, and natural disasters   总被引:2,自引:0,他引:2  
This study applies chaos theory to a system-wide analysis of crisis communication in a natural disaster. Specifically, we analyze crisis communication during the 1997 Red River Valley flood in Minnesota and North Dakota. This flood, among the worst in modern American history, consumed entire metropolitan areas, displacing thousands of people. The conditions and decisions leading to the disaster, and the subsequent reactions are retraced. Communication related to river crest predictions (fractals), the shock at the magnitude of the crisis (cosmology episode), novel forms of reorganizing (self-organization), and agencies that aided in establishing a renewed order (strange attractors) are evaluated. Ultimately, we argue that preexisting sensemaking structures favoring rationalized, traditional views of a complex system led officials to make inappropriately unequivocal predictions and ultimately diminished the effectiveness of the region's crisis communication and planning.  相似文献   
26.
This investigation identifies demographic, media, and social correlates of verbally aggressive communication in adolescence. Mail surveys were completed and returned by 2,300 adolescents between the ages of 13 and 15. These adolescents were asked about the prevalence of verbal and physical aggression, the context in which it occurred, demographics, and the interpersonal and media influences in their lives. The results indicate that verbal aggression is widespread, that committing and experiencing verbal aggression is largely reciprocal, that there is a strong relationship between committing verbal and physical aggression, and that peer social influence and listening to violently oriented music are mildly related to verbal aggression in adolescents. These findings suggest more resources should be allocated to teaching adolescents to understand and control verbal aggression. Further, they provide important answers to many prevention and intervention programmatic questions, including context, content, and targeting concerns. Since the negative consequences of verbal aggression are severe and long lasting, decreasing this destructive communication behavior should significantly improve the lives of many adolescents. These and other practical implications are expanded upon and discussed.  相似文献   
27.
28.
29.
冰上课教学方法与难点教学实践初探   总被引:1,自引:1,他引:0  
在教学实践中感到冰上课的难点有2个:站立和弯道技术.就冰上站立和弯道技术进行了技术和教学方法的初步探讨.在冰上首先要解决站立问题,能站立后滑行就比较容易;另一个难点就是弯道滑行,这点若也解决,冰上课就成功了.  相似文献   
30.
Executives recognize the value of maintaining access to information. More managers filter their own e-mail rather than have assistants do this task. Organizing and storing data for future use are left to the personal preference of the individual manager. Is this in the best interest of the organization? Are data being stored in a manner causing them to be irretrievable in the future? Are irrelevant data being stored? This study investigates the strategies used to store and retrieve e-mail. The results revealed that the primary search strategy was a reliance on memory. The labels assigned to the e-mail folders triggered the user's memory. Although, in the short term, memory is sufficient for organizing and retrieving information, the lack of transferability and preservation of this information poses a danger. The association between the electronic file label and the stored information is unique to the manager and may lead to inaccessibility of relevant corporate knowledge in the future.  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