全文获取类型
收费全文 | 17757篇 |
免费 | 468篇 |
专业分类
各国政治 | 761篇 |
工人农民 | 689篇 |
世界政治 | 1484篇 |
外交国际关系 | 628篇 |
法律 | 10513篇 |
中国共产党 | 2篇 |
中国政治 | 84篇 |
政治理论 | 3888篇 |
综合类 | 176篇 |
出版年
2020年 | 214篇 |
2019年 | 263篇 |
2018年 | 342篇 |
2017年 | 407篇 |
2016年 | 433篇 |
2015年 | 300篇 |
2014年 | 347篇 |
2013年 | 1803篇 |
2012年 | 420篇 |
2011年 | 443篇 |
2010年 | 359篇 |
2009年 | 396篇 |
2008年 | 465篇 |
2007年 | 474篇 |
2006年 | 462篇 |
2005年 | 413篇 |
2004年 | 420篇 |
2003年 | 444篇 |
2002年 | 393篇 |
2001年 | 699篇 |
2000年 | 629篇 |
1999年 | 520篇 |
1998年 | 295篇 |
1997年 | 254篇 |
1996年 | 214篇 |
1995年 | 218篇 |
1994年 | 253篇 |
1993年 | 234篇 |
1992年 | 345篇 |
1991年 | 375篇 |
1990年 | 331篇 |
1989年 | 354篇 |
1988年 | 325篇 |
1987年 | 342篇 |
1986年 | 342篇 |
1985年 | 337篇 |
1984年 | 294篇 |
1983年 | 321篇 |
1982年 | 258篇 |
1981年 | 242篇 |
1980年 | 180篇 |
1979年 | 249篇 |
1978年 | 170篇 |
1977年 | 146篇 |
1976年 | 132篇 |
1975年 | 123篇 |
1974年 | 137篇 |
1973年 | 118篇 |
1972年 | 115篇 |
1971年 | 95篇 |
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
131.
L J ZIGERELL 《Legislative Studies Quarterly》2010,35(3):393-416
Research indicates that senators evaluate U.S. Supreme Court nominations on two ideological dimensions: the distance between themselves and the nominee, and the potential effect confirmation would have on the Court median. My analysis of nominations from 1968 to 2006 provides evidence that senators are also influenced by the ideological contrast between the nominee and the departing justice. 相似文献
132.
Since the 1990s there has been a long-standing concern in government towards public sector accountability, management, efficiency and service delivery. A number of studies have attempted to analyse the multitude of individual changes and their manifestations through analyses based on a variety of institutional, policy and governmental distinctions. This paper attempts to specify the changes with particular reference to planning, and to consider the evolution of the public service ethic in planning towards more openness, scrutiny, transparency and efficiency with particular reference to the changing ethos of the professional employee. We first explore the main impacts upon local government, the public service ethic and professional planning as a consequence of the Modernization agenda and freedoms and flexibilities initiative. We then look at how such changes have impacted upon the ethos and values in public service and planning. We draw on some evidence of Ombudsman cases to highlight issues of professional values in planning practice over the past decade before finally drawing these strands together in some conclusions. Our principal findings indicate that the much-trumpeted decline of services and standards may not have been as apparent as is sometimes portrayed and that internal professional attitudes and values towards the external changes may not have significantly altered over the same period. 相似文献
133.
Both theory and research have been refined to gain a better understanding of when race and ethnicity matter in justice proceedings. In the present research, this line of inquiry was continued by differentiating among minority youth to assess the extent being African American, Native American, and Asian American influenced juvenile justice decision making and how these effects compared to one another and Whites. Utilizing an interpretation of the symbolic threat thesis that emphasizes stereotyping, the authors anticipated Native Americans to be responded to more severely than African Americans, followed by Asian Americans who were anticipated to be responded to more like Whites. The results indicated partial support for these expectations. 相似文献
134.
The present study drew on four competing theoretical perspectives to examine the relationship between family structure and juvenile delinquency. Using data from the Add Health Study, the authors examined nonserious and serious delinquent behavior across youth from different types of households and also considered how the association between family structure and delinquency might be conditioned by family processes and economic factors. Results from negative binomial regression analyses indicated that, in general, type of household was not a significant predictor of nonserious or serious delinquency. Rather, maternal attachment emerged as the most important determinant of delinquent behavior among youth from all family types. The results are discussed within the context of Hirschi's original interpretation of social control theory and future directions for research are suggested. 相似文献
135.
Postmortem examination of a former professional basketball player revealed an abnormal heart, most notably a single coronary artery. The literature on single coronary arteries is briefly reviewed, and the possible mechanism which caused the patient's condition is considered. This case is particularly unusual because of the patient's profession, which is so physically demanding. 相似文献
136.
J B Kempton A Sirignano D H DeGaetano P J Yates W F Rowe 《Journal of forensic sciences》1992,37(6):1534-1540
The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images. 相似文献
137.
138.
139.
140.