全文获取类型
收费全文 | 23317篇 |
免费 | 484篇 |
专业分类
各国政治 | 967篇 |
工人农民 | 1527篇 |
世界政治 | 1440篇 |
外交国际关系 | 953篇 |
法律 | 13145篇 |
中国政治 | 112篇 |
政治理论 | 5510篇 |
综合类 | 147篇 |
出版年
2021年 | 87篇 |
2020年 | 180篇 |
2019年 | 264篇 |
2018年 | 1558篇 |
2017年 | 1514篇 |
2016年 | 1386篇 |
2015年 | 346篇 |
2014年 | 347篇 |
2013年 | 1814篇 |
2012年 | 548篇 |
2011年 | 1263篇 |
2010年 | 1291篇 |
2009年 | 933篇 |
2008年 | 1133篇 |
2007年 | 1138篇 |
2006年 | 461篇 |
2005年 | 473篇 |
2004年 | 570篇 |
2003年 | 528篇 |
2002年 | 414篇 |
2001年 | 523篇 |
2000年 | 465篇 |
1999年 | 393篇 |
1998年 | 246篇 |
1997年 | 220篇 |
1996年 | 221篇 |
1995年 | 220篇 |
1994年 | 221篇 |
1993年 | 210篇 |
1992年 | 294篇 |
1991年 | 308篇 |
1990年 | 298篇 |
1989年 | 293篇 |
1988年 | 287篇 |
1987年 | 258篇 |
1986年 | 308篇 |
1985年 | 291篇 |
1984年 | 271篇 |
1983年 | 248篇 |
1982年 | 182篇 |
1981年 | 156篇 |
1980年 | 129篇 |
1979年 | 173篇 |
1978年 | 112篇 |
1977年 | 131篇 |
1976年 | 109篇 |
1975年 | 86篇 |
1974年 | 115篇 |
1973年 | 91篇 |
1972年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
The psychological assessment battery is an integral part of the selection process used to select patrol officer applicants.
Unlike all other procedures used in the selection process, the psychological assessment has not been adequately validated.
The purpose of this study was an attempt to provide validation data for a psychological assessment battery. The battery consisted
of the Nelson-Denny, Shipley-Hartford, MMPI, and the Motivational Analysis Test (MAT). Performance measures included various
measures of training academy performance and field training performance. A stepwise regression and MANOVA/Discriminant Analysis
indicated that the psychological tests did predict performance, although an exact predictive equation could not be developed
due to the high intercorrelations between predictor variables.
This research was sponsored in part by a grant from the School of Applied Arts and Technology, Southwest Texas State University. 相似文献
122.
Michael Levine 《Crime, Law and Social Change》1993,20(1):1-12
“I Volunteer to Kidnap Ollie North”, is an exercise in following our government's sometimes criminal, often bizarre and always hypocritical actions in the war on drugs during the Reagan-Bush years to their logical conclusion. The Supreme Court has indicated in its June, 1992 decision in U.S. v Machain, that American law enforcement officers can now enter the sovereign territories of other nations to legally abduct violators of U.S. drug laws. Iran immediately proclaimed that they had the same right for violations of Islamic law. What might happen if kidnapping becomes a recognized “tool” of international law enforcement? What prominent Americans might wake up in South American jails with bags over their heads? 相似文献
123.
Federal transportation officials assert that labor protections in the Urban Mass Transportation Act inhibit the propensity of local transit agencies to contract with private firms for services. The authors present results from a survey of a large sample of transit managers and econometric analysis to support their conclusion that labor protections do not appear to reduce the incidence of contracting. The labor protections, however, may be costly to transit management in other ways. The authors recommend actions, aside from repeal of labor protections, to increase contracting by local transit agencies. 相似文献
124.
125.
Dennis R. Fox 《Law and human behavior》1993,17(2):257-258
126.
127.
The concentration of thyreoglobulin (tg) was determined for death caused by hanging, strangulation by ligature, and throttling. Cases of sudden death (traumatic aortic rupture, penetrating wounds of the heart) were used for comparison. The mean values in cases of hanging (149.9±202.3 ng/ml), strangulation by ligature (193.1±173.3), manual strangulation (561.6±173.9) are distinguishable from violent acute deaths (23.3±27.6) and living healthy individuals (17.3±16.1). By means of statistical comparisons, significant differences were found between throttling and strangulation by ligature and between throttling and hanging (adjusted P<0.001). In connection with examination of the bodies high tg values can be regarded as a vital reaction in obstructive asphyxia. 相似文献
128.
129.
A number of recent studies have explored the consequences ofinterracial peer effects on the academic and social performanceof minority students. This article contributes to that discussion,focusing, however, on perceptions rather than behaviors. Theanalysis suggests that exposure to white peers is associatedwith declining perceptions of racial justice among black andLatino high school students. While cautioning against causalinterpretations of this finding, the article suggests that theintegrationist aims of Brown v. Board of Education will notbe satisfied without more thoughtful and vigorous desegregationefforts. 相似文献
130.