全文获取类型
收费全文 | 25688篇 |
免费 | 685篇 |
专业分类
各国政治 | 1049篇 |
工人农民 | 979篇 |
世界政治 | 2034篇 |
外交国际关系 | 849篇 |
法律 | 15488篇 |
中国共产党 | 2篇 |
中国政治 | 134篇 |
政治理论 | 5587篇 |
综合类 | 251篇 |
出版年
2020年 | 291篇 |
2019年 | 380篇 |
2018年 | 481篇 |
2017年 | 578篇 |
2016年 | 596篇 |
2015年 | 430篇 |
2014年 | 492篇 |
2013年 | 2495篇 |
2012年 | 573篇 |
2011年 | 650篇 |
2010年 | 522篇 |
2009年 | 603篇 |
2008年 | 655篇 |
2007年 | 683篇 |
2006年 | 652篇 |
2005年 | 590篇 |
2004年 | 593篇 |
2003年 | 617篇 |
2002年 | 579篇 |
2001年 | 995篇 |
2000年 | 886篇 |
1999年 | 727篇 |
1998年 | 422篇 |
1997年 | 347篇 |
1996年 | 321篇 |
1995年 | 318篇 |
1994年 | 349篇 |
1993年 | 324篇 |
1992年 | 510篇 |
1991年 | 558篇 |
1990年 | 515篇 |
1989年 | 534篇 |
1988年 | 500篇 |
1987年 | 508篇 |
1986年 | 551篇 |
1985年 | 532篇 |
1984年 | 470篇 |
1983年 | 491篇 |
1982年 | 370篇 |
1981年 | 332篇 |
1980年 | 276篇 |
1979年 | 365篇 |
1978年 | 222篇 |
1977年 | 230篇 |
1976年 | 206篇 |
1975年 | 180篇 |
1974年 | 206篇 |
1973年 | 191篇 |
1972年 | 169篇 |
1971年 | 154篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
181.
182.
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
183.
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
184.
Christopher R. Hughes 《当代中国》2005,14(43):247-267
This article critically appraises the narrative of nationalist resurgence in China in the 1990s that structures much of the secondary literature on Chinese politics since Tiananmen. Adopting a post-structuralist method, Chinese texts from the 1990s are treated as discursive rather than as expressions of a common consensus, emergent ideology or political movement. This makes it possible to bring out the disparate points of view concerning the desirability of nationalism for China and to understand the strategies that are being deployed by authors within the context of everyday Chinese politics. It also reveals the significance of the absence from both the primary and the secondary texts of any mention of the advocacy of nationalism by the political leadership. When this hidden discourse is taken into account, it becomes evident that many of the texts that have been taken as expressions of a nationalist revival are either not particularly interested in nationalism or are highly sceptical concerning its possibilities for solving the problems faced by the Chinese state. Particularly significant is the way in which many of the texts locate themselves in relation to the official discourse on nationalism by appropriating its themes in order to promote and legitimate a wide range of other discourses with which it can be bound up, ranging from democracy to authoritarianism. 相似文献
185.
Jail and prison populations in the United States have continued to grow unabated during the past two decades but crime rates have not declined. Partly in response to the pressures caused by burgeoning correctional populations, the use of alternatives to incarceration has expanded. An ongoing debate centers on the effectiveness of these alternatives. Many criminal justice professionals and some researchers question whether such alternatives seriously restrict the criminal justice system 's ability to incapacitate the active offender. This study deals specifically with two alternatives to incarceration: probation and parole. We examine offender recidivism for a sample of probationers and parolees active in New Orleans, Louisiana, and offer a new approach to addressing the effectiveness issue. Past research has evaluated the effectiveness of alternatives by examining failure rates of diverted offenders. High failure rates, we argue, do not necessarily imply a significant loss of the incapacitative effects of imprisonment. We suggest that a more appropriate measure of the loss of incapacitative effect is the proportion of all offenses committed by persons on probation or parole. Our results suggest that such losses are surprisingly low. The policy implications of our findings are discussed. 相似文献
186.
187.
188.
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
189.
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
190.