全文获取类型
收费全文 | 857篇 |
免费 | 38篇 |
专业分类
各国政治 | 111篇 |
工人农民 | 84篇 |
世界政治 | 77篇 |
外交国际关系 | 52篇 |
法律 | 346篇 |
中国政治 | 34篇 |
政治理论 | 186篇 |
综合类 | 5篇 |
出版年
2023年 | 7篇 |
2022年 | 5篇 |
2021年 | 10篇 |
2020年 | 13篇 |
2019年 | 41篇 |
2018年 | 43篇 |
2017年 | 50篇 |
2016年 | 48篇 |
2015年 | 28篇 |
2014年 | 27篇 |
2013年 | 180篇 |
2012年 | 24篇 |
2011年 | 42篇 |
2010年 | 19篇 |
2009年 | 19篇 |
2008年 | 31篇 |
2007年 | 22篇 |
2006年 | 21篇 |
2005年 | 14篇 |
2004年 | 20篇 |
2003年 | 16篇 |
2002年 | 25篇 |
2001年 | 16篇 |
2000年 | 14篇 |
1999年 | 13篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1994年 | 9篇 |
1993年 | 7篇 |
1992年 | 9篇 |
1991年 | 9篇 |
1990年 | 7篇 |
1989年 | 6篇 |
1988年 | 3篇 |
1987年 | 8篇 |
1985年 | 4篇 |
1984年 | 7篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1981年 | 4篇 |
1979年 | 5篇 |
1978年 | 5篇 |
1975年 | 3篇 |
1972年 | 4篇 |
1971年 | 2篇 |
1970年 | 2篇 |
1967年 | 2篇 |
1966年 | 3篇 |
排序方式: 共有895条查询结果,搜索用时 15 毫秒
281.
282.
Mark Zachary Taylor 《政策研究评论》2007,24(3):231-257
Are politically decentralized states better at fostering long‐run technological innovation than centralized states? Societies with decentralized governments are widely seen as agile, competitive, and well structured to adapt to innovation's gale of creative destruction. Meanwhile, centralized states, even when democratic, have come to be viewed as rigid and thus hostile to the risks, costs, and change associated with new technology, or prone to cling too long to foolhardy or outdated technological projects. Therefore government decentralization is often perceived as a necessary institutional foundation for encouraging long‐run technological innovation. However, in this article, I analyze data on international patent activity, scientific publications, and high‐technology exports, and show that there exists little evidence for an aggregate relationship between government structure and technological innovation. 相似文献
283.
Brazilians often complain that investigations of corruption by public servants drag on for years or bring few legal sanctions on the perpetrators. This lack of accountability is so pervasive that a slang phrase, acabou em pizza , is often invoked when investigations are inconclusive. This article investigates the role of four Brazilian public institutions charged with keeping public servants accountable. For analysis, it breaks the accountability process into its three component stages: oversight, investigation, and sanction. Through a study of six prominent cases of corruption, it shows that the weakness of the accountability process in Brazil is due not entirely to the toothlessness of individual institutions of accountability, but also to the independence of such institutions at each of the three stages. These findings suggest that institutional arrangements influence the degree of accountability, and thereby also public trust and confidence, in Latin America's largest democracy. 相似文献
284.
285.
The juvenile gang in the 1990s differs in many significant ways from the gangs described in the “classical” gang studies of the 1950s and 1960s. Juvenile justice professionals should be aware of the changes in the nature, organization, motivation, and activities of gangs and plan intervention strategies accordingly. One important issue in gang research—one which has great implications for public policy—is defining “gang” and “gang-related crime.” The existence of a “gang problem” in a community may be more related to the definition of “gang” and “gang-related” than to the objective issue of whether, or not, a gang problem exists. Further issues relating to the gang of the 1990s involve changing age and sex distribution of gang members, increasing violence by gangs, and deeper involvement with drug distribution. Implications for public policy are discussed. 相似文献
286.
287.
288.
289.
290.
Hans G. Bergendorff Peter B. Clark Lance Taylor 《Economic Change and Restructuring》1973,13(1-2):75-90
This paper compares the results of two multisectoral models used to plan the dynamic consistency of sectoral investment. Solution of an optimizing model forecasts a frontier of the economy's future choice set. This frontier represents a ten year welfare gain only 2 or 3 percent greater than any investment program simulated by a dynamic Leontief system. The paper explains what efficient behavior accounts for the “better” performance of the optimizing model. Developing dynamic programming models is costly in terms of data, computational complexity, man-machine interaction, and solution interpretation. Therefore, it is recommended that the lessons derived by working with the dynamic LP be applied to improve the planner's control of the less expensive input/output simulation model. 相似文献