全文获取类型
收费全文 | 2788篇 |
免费 | 82篇 |
专业分类
各国政治 | 174篇 |
工人农民 | 97篇 |
世界政治 | 231篇 |
外交国际关系 | 183篇 |
法律 | 1209篇 |
中国政治 | 39篇 |
政治理论 | 887篇 |
综合类 | 50篇 |
出版年
2023年 | 19篇 |
2022年 | 14篇 |
2021年 | 27篇 |
2020年 | 35篇 |
2019年 | 69篇 |
2018年 | 83篇 |
2017年 | 89篇 |
2016年 | 89篇 |
2015年 | 74篇 |
2014年 | 107篇 |
2013年 | 394篇 |
2012年 | 102篇 |
2011年 | 77篇 |
2010年 | 75篇 |
2009年 | 86篇 |
2008年 | 85篇 |
2007年 | 104篇 |
2006年 | 92篇 |
2005年 | 79篇 |
2004年 | 87篇 |
2003年 | 85篇 |
2002年 | 80篇 |
2001年 | 53篇 |
2000年 | 51篇 |
1999年 | 47篇 |
1998年 | 39篇 |
1997年 | 37篇 |
1996年 | 37篇 |
1995年 | 39篇 |
1994年 | 43篇 |
1993年 | 44篇 |
1992年 | 37篇 |
1991年 | 32篇 |
1990年 | 20篇 |
1989年 | 38篇 |
1988年 | 21篇 |
1987年 | 28篇 |
1986年 | 26篇 |
1985年 | 34篇 |
1984年 | 36篇 |
1983年 | 32篇 |
1982年 | 33篇 |
1981年 | 30篇 |
1980年 | 24篇 |
1979年 | 14篇 |
1978年 | 15篇 |
1977年 | 13篇 |
1975年 | 16篇 |
1974年 | 12篇 |
1973年 | 17篇 |
排序方式: 共有2870条查询结果,搜索用时 15 毫秒
201.
202.
203.
204.
This study examines the utility of moving beyond a simple "on–off" dichotomous view of contiguous land borders. For each of the 301 contiguous land borders between states in the international system, measures of ease of interaction, salience, and overall border "vitalness" have been developed using Geographical Information Systems technology. These variables are used to test two major extant lines of thought in international relations literature, as well as our proposed alternative, regarding the expected effect of the "nature" of borders on interstate behavior. We conclude not only that the "nature" of contiguous borders matters but also that the relationship between each of the three border measures and the likelihood of conflict is curvilinear concave—with both high ease of interaction and high salience related to lower levels of conflict, and the middle range of both variables related to higher levels of conflict. 相似文献
205.
206.
Hair samples were contaminated by rubbing with cocaine (COC) followed by sweat application, multiple shampoo treatments and storage. The samples were then washed with isopropanol for 15 min, followed by sequential aqueous washes totaling 3.5 h. The amount of drug in the last wash was used to calculate a wash criterion to determine whether samples were positive due to use or contamination. Analyses of cocaine and metabolites were done by LC/MS/MS. These procedures were applied to samples produced by a U.S. government-sponsored cooperative study, in which this laboratory participated, and to samples in a parallel in-house study. All contaminated samples in both studies were correctly identified as contaminated by cutoff, benzoylecgonine (BE) presence, BE ratio, and/or the wash criterion. A method for determining hair porosity was applied to samples in both studies, and porosity characteristics of hair are discussed as they relate to experimental and real-world contamination of hair, preparation of proficiency survey samples, and analysis of unknown hair samples. 相似文献
207.
Paul G. Thomas 《Canadian public administration. Administration publique du Canada》2004,47(2):243-249
The Nature of Managerial Work, 2nd edition. By Henry Mintzberg . Engle‐wood Cliffs, N.J.: Prentice‐Hall. 相似文献
208.
209.
Thomas A. Bryer 《Public administration review》2009,69(2):271-283
Between 2003 and 2006, researchers facilitated a collaborative learning process with representatives of Los Angeles neighborhood councils and officials from city agencies. In two cases, each involving a large city agency, the quality of responsiveness on the part of agency officials to participating citizens was substantially different. This study considers the reasons why agency officials differed in their responsiveness. Using an inductive qualitative and quantitative content analysis across three sources of data, the study develops theory pertaining to bureaucratic responsiveness to citizens in collaborative processes. Specifically, the case findings are generalized to theory through seven propositions for future study. The study's key finding is that administrator and citizen perceptions of their own and the other party's roles may influence the quality of responsive behavior in collaborative activity. The propositions identify subfactors or contingencies that may allow administrators to be more responsive to citizens in collaborative processes. 相似文献
210.