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   45416篇
  免费   740篇
  国内免费   45篇
教育   32682篇
科学研究   4156篇
各国文化   430篇
体育   3329篇
综合类   52篇
文化理论   433篇
信息传播   5119篇
  2022年   278篇
  2021年   456篇
  2020年   694篇
  2019年   1042篇
  2018年   1844篇
  2017年   1930篇
  2016年   1637篇
  2015年   823篇
  2014年   1178篇
  2013年   8295篇
  2012年   1173篇
  2011年   1425篇
  2010年   1112篇
  2009年   990篇
  2008年   1155篇
  2007年   1118篇
  2006年   809篇
  2005年   808篇
  2004年   820篇
  2003年   707篇
  2002年   708篇
  2001年   811篇
  2000年   744篇
  1999年   718篇
  1998年   393篇
  1997年   425篇
  1996年   472篇
  1995年   418篇
  1994年   375篇
  1993年   376篇
  1992年   587篇
  1991年   565篇
  1990年   600篇
  1989年   576篇
  1988年   520篇
  1987年   510篇
  1986年   481篇
  1985年   591篇
  1984年   480篇
  1983年   454篇
  1982年   386篇
  1981年   368篇
  1980年   327篇
  1979年   474篇
  1978年   384篇
  1977年   348篇
  1976年   302篇
  1975年   260篇
  1974年   266篇
  1973年   258篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
There is growing interest in the role of emotion when considering communication in the workplace. This work has most often considered workers in front-line service positions in investigations of emotional labor, and human service workers in investigations of empathy and emotional work. In this study, we consider processes of both emotional labor and emotional work in the financial planning profession. Financial planners occupy a role requiring ongoing relationships with clients, conversations about the often emotional topic of money, and a need to manage emotion in a variety of interaction contexts. Thus, from extant theory and literature regarding emotion and communication, we proposed research questions regarding the roles of emotional labor and emotional work in the financial planning profession. These questions were investigated in a web-based survey study of almost 300 professional financial planners and supporting interviews with 14 financial planners. Results indicate support for existing theory on emotional work, extensions to current research regarding emotional labor, and important implications for the role of emotion and communication in a range of professional service roles.  相似文献   
142.
143.
This paper discusses the evaluation of scientific activity with the help of some scientometric indices, in particular, a citation index. The information massif of the bibliographic database of citations to domestic publications of Kazakh authors is statistically described.  相似文献   
144.
145.
We consider some issues of the development of the national information infrastructure in the field of innovation, including a national system of accounting for the results of scientific and technical activities (RSTA) and a national new-generation research computer network (NNGRCN). The current state of the national system of scientific and technical information and its resources for information support of innovation processes are analyzed. In the context of further development of the Commonwealth of Independent States (CIS), we propose a Conception of scientific and technical support for programs and projects of NIS member-states in the field of innovation, making it possible to incorporate the existing innovation-oriented information resources into a joint distributed integrated information system as well as to create new information resources and technologies.  相似文献   
146.
The necessity for publishing a separate abstract journal on spintronics, which is a new, rapidly developing branch of physics, is substantiated. The interest in spintronics, which is the study of fundamental processes involving the simultaneous transport of both electron charge and electron spins in solids, as well as the interaction of electrons with a magnetic grating, is determined not only by its fascinating prospects but also the results that have already achieved. The spin and charge “degrees of freedom” open possibilities for the creation of semiconducting devices with parameters that are much superior to the existing ones and also the construction of devices that do not have analogues at present. First of all, this will permit problems of information transmission and processing to be solved in a new way. A detailed rubrication on spintronics is given in order to discuss the possibility of publishing a separate edition of an abstract journal devoted to spintronics.  相似文献   
147.
基于专利引文分析的时间线技术   总被引:3,自引:0,他引:3  
在对专利引文可视化技术现状进行分析的基础上,将基于引文分析的时间线技术运用到专利文献的可视化分析。详细阐述该技术的理论依据、设计思想,并用美国专利数据库中的DVD激光头专利进行技术应用,证明该技术能揭示专利文献中的技术热点及其发展演变,并挖掘关键技术。  相似文献   
148.
The use of rural sites to train badly needed primary care providers requires access to sophisticated medical information not traditionally available outside of academic health centers. Medical reference librarians can play a key role in the development of primary care training sites in rural settings. Electronic information technologies, with proactive support from medical reference librarians, can provide current and detailed information without concern for distance from the health science center library. This paper discusses recent developments in technology, describes current challenges to the application of this technology in rural settings, and provides policy recommendations for medical reference librarians to enhance rural primary care training.  相似文献   
149.
This paper explores surviving documentation and what it reveals about the underlying social structure and relations in a historic time and place. The mid-nineteenth century is chosen as a period prior to modern bureaucracies so that documents are not found in defining filing systems. Some six hundred documents are studied individually and characterized collectively. They are examined not to tell a story, however, but for evidence of their creation and maintenance and of their physical types, functional characteristics, and relations between authors and recipients. The study reveals the fruitfulness of such an orientation to documents, which complements traditional historical uses that emphasize document content.  相似文献   
150.
In 1991, the Reference and Information Services staff of the Alfred Taubman Medical Library at the University of Michigan gathered data on the use of the reference desk, including the frequency and types of assistance requested by different user groups throughout the year. Recommendations based on the results of this study led to improved service as well as more efficient use of staff resources.  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