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   2106篇
  免费   53篇
  国内免费   33篇
教育   1573篇
科学研究   138篇
各国文化   23篇
体育   126篇
综合类   18篇
文化理论   19篇
信息传播   295篇
  2024年   2篇
  2023年   29篇
  2022年   26篇
  2021年   58篇
  2020年   76篇
  2019年   108篇
  2018年   142篇
  2017年   145篇
  2016年   123篇
  2015年   86篇
  2014年   111篇
  2013年   382篇
  2012年   106篇
  2011年   88篇
  2010年   72篇
  2009年   72篇
  2008年   70篇
  2007年   68篇
  2006年   65篇
  2005年   59篇
  2004年   41篇
  2003年   48篇
  2002年   25篇
  2001年   16篇
  2000年   26篇
  1999年   18篇
  1998年   13篇
  1997年   15篇
  1996年   13篇
  1995年   9篇
  1994年   2篇
  1993年   7篇
  1992年   6篇
  1991年   6篇
  1990年   6篇
  1989年   3篇
  1988年   6篇
  1987年   3篇
  1986年   6篇
  1985年   3篇
  1984年   3篇
  1983年   5篇
  1982年   3篇
  1981年   2篇
  1980年   3篇
  1979年   3篇
  1978年   3篇
  1959年   1篇
  1930年   1篇
  1929年   1篇
排序方式: 共有2192条查询结果,搜索用时 31 毫秒
1.
ABSTRACT

This forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities.  相似文献   
2.
First, I am pleased to note the broad area of agreement amongthe four of us. We concur fully that polls are useful, powerful,and play an important role in contemporary politics. My threeresponders also acknowledge the significance of alternativeways in which citizens can express their opinions and, furthermore,that public opinion is more diverse and nuanced than any dichotomoussplit between the pros and cons on a particular issue recordedat a particular time might suggest. Sir Robert chides me explicitly, and Gary Langer by implication,for failing  相似文献   
3.
从加强学科建设谈高校图书馆数字化信息服务   总被引:9,自引:0,他引:9  
从加强高校学科建设、培养和造就高水平学科带头人出发,分析高校图书馆数字化信息服务的现状,论述高校图书馆数字化信息服务的具体措施。  相似文献   
4.
文章纪录了上世纪80年代走入图书馆领域的一代图书馆学人所经历的学术历程,描述了他们作为一个十分重要的学术群体在理论和实践方面对我国图书馆学和图书馆事业的重要贡献。  相似文献   
5.
6.
The Standards Committee of the Veterinary Medical Libraries Section was appointed in May 2000 and charged to create standards for the ideal academic veterinary medical library, written from the perspective of veterinary medical librarians. The resulting Standards for the Academic Veterinary Medical Library were approved by members of the Veterinary Medical Libraries Section during MLA '03 in San Diego, California. The standards were approved by Section Council in April 2005 and received final approval from the Board of Directors of the Medical Library Association during MLA '04 in Washington, DC.  相似文献   
7.
ABSTRACT

Control of relative humidity (RH) for collections care is challenging in U.K. historic houses because they are often highly ventilated with poor heat retention, a porous building fabric and naturally tend to high (60–80%) RH if unheated. The significance of the building means that large-scale modifications and installation of air handling systems may be unfeasible and undesirable for the conservation of the building. In the late 1980s the National Trust, for English, Wales and Northern Ireland, investigated conservation heating as an RH control method that works with the natural environment of historic buildings, mimicking historic heating and requiring only modification of existing heating services or a light touch installation of new heating systems. The National Trust adopted conservation heating as its preferred method for environmental control in historic buildings from the 1990s. This method was presented at the IIC 1994 Ottawa congress on preventive conservation. Conservation heating has since been adopted by many historic house management organisations, particularly across north-west Europe, where it is well suited to the climate. This paper reviews conservation heating developments implemented by the National Trust since 1994, in response to a changing external context, new knowledge and developments in operational practice.  相似文献   
8.
ABSTRACT

Social media is a powerful tool for building an online presence, but it asks a lot. While it affords plentiful opportunities for professional development and networking, building a professional brand in an online space is not without its drawbacks and risks. By working from a set of actionable principles and benchmarks, users can minimize frustrations and setbacks to build a useful professional presence, all while imbuing the web with the tenets of good information stewardship.  相似文献   
9.
ABSTRACT

Open education resources represent a great opportunity to reduce textbook costs, but many of them have not been evaluated for quality. Librarians and former students in an introduction to engineering course collected and evaluated open education resources to supplement the course textbook in future semesters. Both searching for and evaluating these resources created opportunities for the librarians to evaluate information literacy skills of these students and to provide instruction to improve these skills.  相似文献   
10.
The growth of archival studies programs has prompted archival scholars to establish an international network for supporting collaborative research, curriculum development, and pedagogy. Doctoral education is key to the sustainability of such programs and the continuation of the network over time. We carried out longitudinal research to survey the population of doctoral students attending one or more Archival Education and Research Institutes (AERI), an annual meeting first held in 2009. Building on prior research on graduate archival education, we gathered demographic and qualitative data about doctoral students specializing in archival studies who are based in several countries including the USA. We sought to assess attendee motivations, guide conference planning, and help advance overall AERI objectives. Our study provides a baseline understanding of the disciplinary backgrounds, research directions, and specific professional development activities that doctoral students in archival studies pursued around the globe from 2013 to 2015. This paper argues that doctoral education should continue to be a particular subject of archival research and indicates how archival students’ range of academic interests is diversifying and strengthening the scholarly community.  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