全文获取类型
收费全文 | 23628篇 |
免费 | 781篇 |
国内免费 | 5篇 |
专业分类
各国政治 | 1073篇 |
工人农民 | 1034篇 |
世界政治 | 1529篇 |
外交国际关系 | 779篇 |
法律 | 14969篇 |
中国共产党 | 9篇 |
中国政治 | 199篇 |
政治理论 | 4581篇 |
综合类 | 241篇 |
出版年
2020年 | 303篇 |
2019年 | 390篇 |
2018年 | 497篇 |
2017年 | 581篇 |
2016年 | 575篇 |
2015年 | 414篇 |
2014年 | 428篇 |
2013年 | 2352篇 |
2012年 | 632篇 |
2011年 | 660篇 |
2010年 | 551篇 |
2009年 | 582篇 |
2008年 | 701篇 |
2007年 | 712篇 |
2006年 | 727篇 |
2005年 | 649篇 |
2004年 | 642篇 |
2003年 | 649篇 |
2002年 | 587篇 |
2001年 | 853篇 |
2000年 | 742篇 |
1999年 | 616篇 |
1998年 | 349篇 |
1997年 | 274篇 |
1996年 | 293篇 |
1995年 | 262篇 |
1994年 | 281篇 |
1993年 | 300篇 |
1992年 | 470篇 |
1991年 | 498篇 |
1990年 | 480篇 |
1989年 | 427篇 |
1988年 | 448篇 |
1987年 | 427篇 |
1986年 | 467篇 |
1985年 | 411篇 |
1984年 | 371篇 |
1983年 | 362篇 |
1982年 | 256篇 |
1981年 | 277篇 |
1980年 | 190篇 |
1979年 | 269篇 |
1978年 | 192篇 |
1977年 | 174篇 |
1976年 | 152篇 |
1975年 | 176篇 |
1974年 | 185篇 |
1973年 | 164篇 |
1972年 | 152篇 |
1969年 | 133篇 |
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
161.
Recently criminologists have begun to explore the importance of disaggregating frequency measures of self-reported delinquency into the separate decisions of initiation and continuation. Given that labeling makes predictions concerning continuation, the purpose of this paper is twofold. The first is to test the ability of an informal labeling model to predict the decision to continue delinquent behavior once it is initiated. The second purpose is to address the broader question of whether disaggregation matters. The findings support the idea that the informal labeling model is predictive of the decision to continue delinquent behavior. The findings also suggest that, at least for a measure of general delinquency, there are some differences to be found by choosing the appropriate sample and form of the dependent variable. 相似文献
162.
163.
164.
Do Lawyers Cause Adversarial Legalism? A Preliminary Inquiry 总被引:2,自引:1,他引:1
Robert A. Kagan 《Law & social inquiry》1994,19(1):1-62
Cross-national case studies have indicated that compared to other economically advanced democracies, American methods of policy implementation and dispute resolution are more adversarial and legalistic, shaped by costly court action or the prospect of it. To what extent are lawyers responsible for creating American-style adversarial legalism? This article argues that while adversarial legalism stems primarily from enduring features of American political culture and governmental structure, the legal profession plays a significant independent role in promoting and perpetuating this mode of governance. 相似文献
165.
166.
Deoxyribonucleic acid (DNA) typing of ribosomal ribonucleic acid (rRNA) genes was performed with a polymerase chain reaction (PCR) assay for species identification. A variable region of the 28S ribosomal RNA gene was amplified with primers complementary to flanking sequences phylogenetically well conserved. The products of twelve animal DNAs (human, Japanese monkey, dog, cattle, pig, cat, rabbit, mouse, rat, chicken, frog, and fish) were separated by polyacrylamide gel electrophoresis, each revealing a few bands ranging from 150 to 100 base pairs. The band patterns obtained from each DNA sample differed in number and size, which indicates the applicability of the method to species identification. Samples containing either as little as 1 pg of DNA or degraded DNA of 0.2 to 0.5 kb in length were able to give detectable bands. Postmortem human tissue DNAs were tested as an example. They showed a pattern identical to the human control one, which was distinct from those of the other animals examined. 相似文献
167.
This article investigates the effect of Computer Assisted Monitoring of Offenders (CAMO) on probation outcome. In a comparison
sample, the effect of CAMO treatment is compared to the effect of “regular” probation. In addition to testing the effects
of CAMO as an intermediate treatment, methodological issues, such as level of probation restrictiveness and the effects of
prior criminal involvement on probation outcome, are tested. Although the results are mixed, they indicate that level of probation
restrictiveness and prior criminal involvement have a greater effect on probation outcome than does CAMO. These findings have
ramifications for researchers comparing CAMO probationers to “regular” probationers and for those comparing different CAMO
programs.
An earlier version of this paper was presented at the Western Social Science Association’s 1992 annual conference. 相似文献
168.
169.
A report of an international collaborative experiment to demonstrate the uniformity obtainable using DNA profiling techniques. 总被引:2,自引:0,他引:2
P Gill S Woodroffe W B?r B Brinkmann A Carracedo B Eriksen S Jones A D Kloosterman B Ludes B Mevag 《Forensic science international》1992,53(1):29-43
This paper describes a collaborative exercise intended to demonstrate whether uniformity of DNA profile results could be achieved between different European laboratories. It was shown that this goal can be obtained provided that a common protocol is followed (specifically the use of a common electrophoretic buffer as being the most important parameter). Generally, lower molecular weight loci (with lower molecular weight fragments) such as YNH24 perform better than higher molecular weight loci such as MS43a. The results of the exercise are discussed in relation to the objectives of the European DNA profiling group (EDNAP). 相似文献
170.
Threatening and otherwise inappropriate letters to members of the United States Congress 总被引:2,自引:0,他引:2
P E Dietz D B Matthews D A Martell T M Stewart D R Hrouda J Warren 《Journal of forensic sciences》1991,36(5):1445-1468
The authors examine the characteristics of threatening and otherwise inappropriate communications sent to members of the U.S. Congress by a sample of 86 subjects, 20 of whom threatened assassination. We quote excerpts from these letters and provide quantitative data on such variables as the volume, duration, form, and appearance of such communications; the enclosures; the subjects' perceived relationships to the recipients; the thematic content of the communications; and the messages and threats communicated. Comparisons between 43 subjects who pursued encounters with members of Congress and 43 who did not revealed 17 factors associated with such pursuit. In this population, threateners were significantly less likely to pursue an encounter than inappropriate letter writers who did not threaten, regardless of the type of threat or the harm threatened. Inappropriate letters to members of Congress are compared with those directed to Hollywood celebrities. Mentally disordered persons writing to public figures often mention and sometimes threaten public figures other than those to whom the letters are addressed, which raises important issues regarding notification of endangered third parties and the sharing of information among protective agencies. 相似文献