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   24630篇
  免费   304篇
  国内免费   16篇
教育   17534篇
科学研究   1956篇
各国文化   262篇
体育   2430篇
综合类   7篇
文化理论   221篇
信息传播   2540篇
  2021年   249篇
  2020年   376篇
  2019年   584篇
  2018年   791篇
  2017年   716篇
  2016年   706篇
  2015年   444篇
  2014年   570篇
  2013年   4520篇
  2012年   516篇
  2011年   571篇
  2010年   428篇
  2009年   473篇
  2008年   511篇
  2007年   475篇
  2006年   434篇
  2005年   389篇
  2004年   422篇
  2003年   322篇
  2002年   341篇
  2001年   471篇
  2000年   527篇
  1999年   444篇
  1998年   268篇
  1997年   266篇
  1996年   324篇
  1995年   255篇
  1994年   267篇
  1993年   232篇
  1992年   358篇
  1991年   373篇
  1990年   348篇
  1989年   370篇
  1988年   340篇
  1987年   331篇
  1986年   328篇
  1985年   372篇
  1984年   295篇
  1983年   309篇
  1982年   245篇
  1981年   249篇
  1980年   261篇
  1979年   351篇
  1978年   261篇
  1977年   246篇
  1976年   202篇
  1975年   184篇
  1974年   183篇
  1973年   176篇
  1971年   175篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
991.
Web sites are increasingly used by academic libraries to promote key services and collections to teaching faculty. This study analyzes the content, location, language, and technological features of fifty-four academic library Web pages designed especially for faculty to expose patterns in the development of these pages.  相似文献   
992.
Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.  相似文献   
993.
This article proposes the incorporation of learning science into the programming and operation of public libraries. Learning science, a multidisciplinary field spanning cognitive science, psychology, neuroscience, economics, anthropology, and linguistics, has identified proven methods for enhancing learning at any age. The article highlights some of the tools and insights that are most relevant to libraries in their role as centers for informal learning.  相似文献   
994.
Affective computing technologies are designed to sense and respond based on human emotions. This technology allows a computer system to process the information gathered from various sensors to assess the emotional state of an individual. The system then offers a distinct response based on what it “felt.” While this is completely unlike how most people interact with electronics today, this technology is likely to trickle into future everyday life. This column will explain what affective computing is, some of its benefits, and concerns with its adoption. It will also provide an overview of its implication in the library setting and offer selected examples of how and where it is currently being used.  相似文献   
995.
The 2016 Orlando shooting offers an intriguing lens through which to evaluate the boundaries of media frames in the interpretation of terrorism. Using an experimental design (N = 243), the current study investigated the effects of two dominant frames—the homophobic hate crime and the Islamic terrorist frame—on collective guilt, collective victimization, and pro–lesbian, gay, bisexual, transgender, and queer (LGBTQ) political action. In addition, political partisanship and social network diversity were evaluated as potential moderators. Compared to the Islamic terrorist frame, exposure to the homophobic hate crime frame increased collective guilt and decreased collective victimization, subsequently enhancing support for the LGBTQ community. Moreover, social network diversity was shown to override the framing effect, as individuals who reported high diversity were more likely to sign a petition in solidarity with the LGBTQ community, irrespective of frame condition.  相似文献   
996.
This study replicated a previous research project addressing connections between family-of-origin communication and organizational dissent expression. We predicted that family communication patterns (FCPs), specifically conversation and conformity orientations, would predict upward, lateral, and displaced dissent. As in the original study, significant findings emerged for upward dissent and conformity orientation. This replication study indicated family type as an inconsistent predictor of expressed dissent. Contrary to the original study, we found no evidence to support a connection between pluralistic family types and upward dissent. Finally, as an extension of the original study we analyzed effects of FCPs on displaced dissent, finding an inverse association with conversation orientation. Implications for future research are discussed.  相似文献   
997.
Abstract

This paper provides a methodology to study the characteristics of the research output from a university department. The faculty publications and their cited references over a 10-year period were used as the basis for this study to identify their publishing patterns and the types of material they are publishing; a core set of journals and other resources they are publishing in and citing over this period; the characteristics of the journals in which they publish and cite; the degree of openness of their publications and their citation advantage; and the age of resources that are referenced.  相似文献   
998.
999.
Widely varying recommended reading lists for psychiatry residents were obtained from 140 AMA-approved training programs. Approximately 4,000 articles, 2,800 books, and 200 serials were listed. The number of recommendations for each book was counted, and a rank-order determined. A second rank-order was determined from the lists of those eighty-seven programs which indicated that their material covered the "basic" literature; a third rank-order was determined from the number of residents using the lists. All rank-orders agreed on the "most recommended" book and the first eighteen books; there was a 92 percent correlation through the first 453 books. One-third of the "basic" recommendations were for the first 104 books; one-third for the next 349 books, and one-third for the remaining 1,994 books. The subject matter of the first 104 books indicated that the currently most popular subjects in psychiatry are psychoanalytic theories of personality, schizophrenia, psychotherapy, and child psychiatry. A list of the 104 most recommended books is appended.  相似文献   
1000.
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