全文获取类型
收费全文 | 23238篇 |
免费 | 411篇 |
国内免费 | 15篇 |
专业分类
教育 | 16654篇 |
科学研究 | 2033篇 |
各国文化 | 222篇 |
体育 | 1927篇 |
综合类 | 13篇 |
文化理论 | 175篇 |
信息传播 | 2640篇 |
出版年
2022年 | 176篇 |
2021年 | 267篇 |
2020年 | 390篇 |
2019年 | 616篇 |
2018年 | 844篇 |
2017年 | 829篇 |
2016年 | 722篇 |
2015年 | 434篇 |
2014年 | 682篇 |
2013年 | 4512篇 |
2012年 | 641篇 |
2011年 | 654篇 |
2010年 | 484篇 |
2009年 | 504篇 |
2008年 | 544篇 |
2007年 | 490篇 |
2006年 | 435篇 |
2005年 | 416篇 |
2004年 | 376篇 |
2003年 | 362篇 |
2002年 | 348篇 |
2001年 | 478篇 |
2000年 | 403篇 |
1999年 | 365篇 |
1998年 | 206篇 |
1997年 | 212篇 |
1996年 | 244篇 |
1995年 | 238篇 |
1994年 | 183篇 |
1993年 | 201篇 |
1992年 | 323篇 |
1991年 | 301篇 |
1990年 | 298篇 |
1989年 | 300篇 |
1988年 | 257篇 |
1987年 | 301篇 |
1986年 | 267篇 |
1985年 | 308篇 |
1984年 | 246篇 |
1983年 | 214篇 |
1982年 | 192篇 |
1981年 | 163篇 |
1980年 | 154篇 |
1979年 | 261篇 |
1978年 | 182篇 |
1977年 | 168篇 |
1976年 | 153篇 |
1975年 | 141篇 |
1974年 | 147篇 |
1971年 | 140篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
This article is a preliminary analysis of the first few years of the Computer Matching and Privacy Protection Act of 1988 (CMPPA). The act requires Federal agencies to establish Data Integrity Boards (DIBs) with responsibility to approve written agreements for computer matches in which their agencies are involved. Information for this analysis was collected from the annual reports on computer matching submitted by agencies to the Office of Management and Budget (OMB) for 1990 and 1991 and from 108 matching agreements. The secretaries of several DIBs were also interviewed. The effectiveness of DIBs and matching agreements are analyzed using McCubbins and Schwartz's distinction between “police-patrol” and “fire- alarm” oversight. The article concludes that more active and direct oversight, which would occur through an independent data protection or privacy board, is necessary. 相似文献
32.
33.
34.
35.
Jenny Morris, freelance researcher, David Abbott, research associate at the Norah Fry Research Centre at the University of Bristol, and Linda Ward, Director of the Norah Fry Research Centre at the University of Bristol, carried out research to look at whether the current system of legislation and regulation is adequately protecting and promoting the interests of disabled children placed at residential schools. This article summarises some findings from the research which investigated the decision-making processes leading to residential special school placements and explored the involvement of education and social services authorities after placements have been made. The research found that the needs of individual children are not central to these decision-making processes; and that the local authorities who make such placements do not pay sufficient attention to protecting and promoting children's educational or care needs once they have gone away to school. Jenny Morris, David Abbott and Linda Ward indicate some of the ways in which current practice could be improved; make recommendations for future developments; and call for further research into the role of special residential schools in the context of policy on educational and social inclusion. 相似文献
36.
37.
38.
39.
40.