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   14835篇
  免费   246篇
  国内免费   13篇
教育   10338篇
科学研究   1728篇
各国文化   130篇
体育   1170篇
综合类   17篇
文化理论   173篇
信息传播   1538篇
  2022年   103篇
  2021年   155篇
  2020年   236篇
  2019年   331篇
  2018年   471篇
  2017年   483篇
  2016年   437篇
  2015年   302篇
  2014年   420篇
  2013年   2542篇
  2012年   362篇
  2011年   355篇
  2010年   330篇
  2009年   307篇
  2008年   330篇
  2007年   327篇
  2006年   293篇
  2005年   269篇
  2004年   295篇
  2003年   250篇
  2002年   268篇
  2001年   332篇
  2000年   358篇
  1999年   266篇
  1998年   157篇
  1997年   199篇
  1996年   193篇
  1995年   135篇
  1994年   146篇
  1993年   133篇
  1992年   209篇
  1991年   195篇
  1990年   227篇
  1989年   219篇
  1988年   186篇
  1987年   199篇
  1986年   179篇
  1985年   212篇
  1984年   155篇
  1983年   137篇
  1982年   133篇
  1981年   115篇
  1980年   117篇
  1979年   179篇
  1978年   136篇
  1977年   121篇
  1976年   95篇
  1975年   96篇
  1974年   98篇
  1973年   95篇
排序方式: 共有10000条查询结果,搜索用时 500 毫秒
31.
32.
33.
34.
The roles of academic health sciences librarians are continually evolving as librarians initiate new programs and services in response to developments in computer technology and user demands. However, statistics currently collected by libraries do not accurately reflect or measure these new roles. It is essential for librarians to document, measure, and evaluate these new activities to continue to meet the needs of users and to ensure the viability of their professional role. To determine what new measures should be compiled, the authors examined current statistics, user demands, professional literature, and current activities of librarians as reported in abstracts of poster sessions at Medical Library Association annual meetings. Three new categories of services to be measured are proposed. The first, consultation, groups activities such as quality filtering and individual point-of-need instruction. The second, outreach, includes activities such as working as liaisons, participating in grand rounds or morning report, and providing continuing education. The third area, Web authoring, encompasses activities such as designing Web pages, creating online tutorials, and developing new products. Adding these three measures to those already being collected will provide a more accurate and complete depiction of the services offered by academic health sciences librarians.  相似文献   
35.
The many challenges faced by health sciences libraries of all types and sizes often require innovative solutions. When an innovative solution involves calculated risk taking, the approach is called intrapreneurial. At the University of Miami School of Medicine, an intrapreneurial approach solved the fiscal problems of the biomedical communications unit. The Louis Calder Memorial Library inherited these problems when the Department of the Library and Biomedical Communications was created in the early 1980s. In this paper, two intrapreneurial programs are described, and the benefit and suitability of this management style to information services are demonstrated.  相似文献   
36.
37.
S. Ramasesha 《Resonance》2009,14(8):782-798
Efficient lighting and display have become important concerns in the energy-starved modern world. This has led to new paradigms in lighting and display technologies. Organic molecules provide a new class of active materials for such technologies. This article gives the basic science behind the design of such molecular materials used in displays and lighting.  相似文献   
38.
Biodiversity is a difficult concept. It can be introduced to young children successfully, laying the foundations for further study in later years. This article describes one practical activity for 5‐ and 6‐year‐old children.  相似文献   
39.
The most frequently requested accommodation among students with learning disabilities (LD) in postsecondary settings is extended test time. The frequency with which this accommodation is requested and granted compels disability service providers to become knowledgeable about the factors that influence the need for, and appropriateness of, the accommodation. Moreover, the synthesis of these factors becomes the basis for determining if the accommodation is reasonable under federal law. The purpose of this article is to present a step‐by‐step model to be used as a decision‐making process when considering the accommodation of extended test time for postsecondary students with LD. The model is designed to assist disability service providers in the analysis and synthesis of information collected from (1) the student's diagnostic evaluation, (2) the course or classroom test to be accommodated, and (3) student interviews. A list of diagnostic tests from the four most frequently administered test batteries used with adults is provided, along with a concise explanation of how characteristics of LD impact reading, writing, and math, and relate to the need for extended time. This information can be used to determine if extended test time is a reasonable accommodation and to estimate how much additional time to provide.  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