全文获取类型
收费全文 | 9072篇 |
免费 | 566篇 |
专业分类
各国政治 | 464篇 |
工人农民 | 313篇 |
世界政治 | 640篇 |
外交国际关系 | 373篇 |
法律 | 5859篇 |
中国政治 | 44篇 |
政治理论 | 1885篇 |
综合类 | 60篇 |
出版年
2021年 | 56篇 |
2020年 | 221篇 |
2019年 | 234篇 |
2018年 | 250篇 |
2017年 | 317篇 |
2016年 | 301篇 |
2015年 | 262篇 |
2014年 | 249篇 |
2013年 | 996篇 |
2012年 | 237篇 |
2011年 | 241篇 |
2010年 | 273篇 |
2009年 | 290篇 |
2008年 | 244篇 |
2007年 | 228篇 |
2006年 | 234篇 |
2005年 | 220篇 |
2004年 | 240篇 |
2003年 | 201篇 |
2002年 | 193篇 |
2001年 | 351篇 |
2000年 | 285篇 |
1999年 | 254篇 |
1998年 | 129篇 |
1997年 | 83篇 |
1996年 | 93篇 |
1995年 | 105篇 |
1994年 | 105篇 |
1993年 | 101篇 |
1992年 | 165篇 |
1991年 | 179篇 |
1990年 | 163篇 |
1989年 | 170篇 |
1988年 | 135篇 |
1987年 | 149篇 |
1986年 | 141篇 |
1985年 | 148篇 |
1984年 | 115篇 |
1983年 | 120篇 |
1982年 | 97篇 |
1981年 | 85篇 |
1980年 | 68篇 |
1979年 | 117篇 |
1978年 | 73篇 |
1977年 | 64篇 |
1976年 | 53篇 |
1975年 | 49篇 |
1974年 | 59篇 |
1973年 | 57篇 |
1972年 | 48篇 |
排序方式: 共有9638条查询结果,搜索用时 0 毫秒
11.
12.
P. Gill C.H. Brenner J.S. Buckleton A. Carracedo M. Krawczak W.R. Mayr N. Morling M. Prinz P.M. Schneider B.S. Weir 《Forensic Science International Supplement Series》2006,160(2-3):90-101
The DNA commission of the International Society of Forensic Genetics (ISFG) was convened at the 21st congress of the International Society for Forensic Genetics held between 13 and 17 September in the Azores, Portugal. The purpose of the group was to agree on guidelines to encourage best practice that can be universally applied to assist with mixture interpretation. In addition the commission was tasked to provide guidance on low copy number (LCN) reporting. Our discussions have highlighted a significant need for continuing education and research into this area. We have attempted to present a consensus from experts but to be practical we do not claim to have conveyed a clear vision in every respect in this difficult subject. For this reason, we propose to allow a period of time for feedback and reflection by the scientific community. Then the DNA commission will meet again to consider further recommendations. 相似文献
13.
14.
Stephen B. Peterson 《公共行政管理与发展》1991,11(5):491-510
This article examines constraints in development bureaucracies in intensifying the use of microcomputers as they move beyond processing applications to analysing applications. The work is based on the experience of several ministries of the Government of Kenya. Processing applications involve throughput of data and are relatively simple. Analysing applications, in contrast, are more complex and include data assembly, sensitivity analysis, and modelling. The article argues that processing applications are more compatible with the administrative cultures, bureaucratic functions, personnel skill levels and organizational structures of development bureaucracies. Analysing applications are less compatible because they require a level of training and motivation uncommon in development bureaucracies. Analysing applications are further thwarted by constraints in the supply of relevant information and the lack of demand for analysis by decision-makers. A four-cell matrix is developed which explains these constraints. The article concludes with several recommendations for encouraging microcomputer-based analysis, but cautions that processing applications will continue to dominate for the foreseeable future. 相似文献
15.
J. Daniel Khazzoom 《Journal of policy analysis and management》1991,10(3):434-454
The EPA implements its policy of exhaust emission control by setting standards specified in terms of grams of pollutants per mile traveled. As a result, the tax must first restrain the vehicle miles traveled (VMT) if it is to have an impact on emission at all. EPA's choice of miles traveled as the medium through which its policy of pollution control must run is unfortunate, because travel is an activity that people resist giving up. This is reflected in a low long-run price elasticity of travel demand. Consequently, it takes substantial increases in the gasoline tax to make an impact on long-run travel demand. Simulation results show that under an alternative policy option, where EPA's standards are specified in terms of grams of pollutant per gallon of fuel burned, the same long-run reduction in exhaust emissions achievable today can be achieved (at an even higher level of confidence) with less than one-tenth of the increase in gasoline price required under the existing policy regime. 相似文献
16.
17.
Daniel Smilov 《Crime, Law and Social Change》2010,53(1):67-77
This article explores the reasons for the introduction of anticorruption agencies of a specific type in Eastern Europe. It
is argued that one of the important functions of these agencies—which are stronger on information gathering, coordination
and strategy rather than on investigation of concrete cases—is to give to the government some leverage over the anticorruption
discourse. Presenting the anticorruption commissions and agencies as (discourse-controlling) instruments gives an answer to
the troubling question why governing parties are at all interested in the introduction of such bodies. Apart from instrumentalization in political discourse, anticorruption
bodies in Eastern Europe have had other effects as well. As shown in the Baltic case, institutional engineering provides for
a brief window of opportunity during which political forces committed to integrity could gain the upper hand. The problem
in Eastern Europe, however, is not the lack of such windows of opportunities—it is more the lack of really committed political
forces capable of continuous and consistent anticorruption effort. 相似文献
18.
Daniel Lockwood 《American Journal of Criminal Justice》1991,15(2):134-152
This paper discusses empirical findings and theories about prison higher education and recidivism. The research designs of
available evaluations of prison higher education are discussed. Their results in regard to arrest and return to prison after
release are presented in tables and figures. Both opportunity theory and moral development theory have been used to justify
such prison programs as crime prevention measures. A critical examination of the actual findings of the evaluations carried
out up to now suggests that prison higher education may have had only a slight impact on recidivism. One could, therefore,
doubt the value of opportunity theory and moral development theory to justify prison higher education as a crime control measure.
However, the methods used in the evaluations of this program have been generally weak. Thus, there is a continuing need to
carry out well-designed research on this question. The findings of follow-up studies of prison higher education have significance
for issues of correctional education policy as well as criminological theory. 相似文献
19.
20.