首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   25833篇
  免费   574篇
各国政治   984篇
工人农民   1621篇
世界政治   1714篇
外交国际关系   972篇
法律   15083篇
中国共产党   3篇
中国政治   91篇
政治理论   5746篇
综合类   193篇
  2021年   95篇
  2020年   248篇
  2019年   305篇
  2018年   1570篇
  2017年   1557篇
  2016年   1420篇
  2015年   389篇
  2014年   401篇
  2013年   1858篇
  2012年   621篇
  2011年   1322篇
  2010年   1311篇
  2009年   957篇
  2008年   1172篇
  2007年   1138篇
  2006年   481篇
  2005年   479篇
  2004年   594篇
  2003年   581篇
  2002年   437篇
  2001年   707篇
  2000年   641篇
  1999年   519篇
  1998年   307篇
  1997年   264篇
  1996年   228篇
  1995年   247篇
  1994年   269篇
  1993年   229篇
  1992年   346篇
  1991年   375篇
  1990年   335篇
  1989年   353篇
  1988年   320篇
  1987年   339篇
  1986年   348篇
  1985年   336篇
  1984年   297篇
  1983年   325篇
  1982年   262篇
  1981年   238篇
  1980年   182篇
  1979年   253篇
  1978年   173篇
  1977年   154篇
  1976年   132篇
  1975年   120篇
  1974年   136篇
  1973年   120篇
  1972年   112篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
Criminal justice agencies are organized sequentially — “output” from one agency is “input” to the next — but most scholars argue that criminal justice is not a system in a theoretical sense. In this article, it is argued that general systems theory (GST) reveals important insights into criminal justice structures and functions. Specifically, it is argued that the criminal justice system processes “cases” rather than people, and that the common goal of criminal justice processing is to “close cases so that they stay closed.” It also is argued that processing capacity progressively declines, in that at each system point the subsequent agency cannot input as many cases as the previous agency can output. Each agency therefore experiences “backward pressure” to close cases in order to reduce input to the next agency. Overall, this article highlights that criminal justice agents and agencies are best understood as operating in the context of the larger whole, thus it is concluded that criminal justice is a system in the sense of general systems theory.  相似文献   
152.
153.
154.
155.
156.
In order to cooperate with voluntary screening programs aimed at the surveillance of the HIV epidemic in Finland, we have studied medicolegal autopsies for HIV antibodies since 1986 using an enzyme immunoassay on postmortem sera. The investigation covered 47.4% and 39.2%, respectively, of all deaths under the age of 65 years in the metropolitan areas of Helsinki and Turku--two cities on the densely populated southern coast of Finland from which most HIV infections have thus far been detected. Nine HIV-positive cases (0.12%) were detected among the 7305 medicolegal autopsies tested in 1986 to 1990. This figure is higher than the prevalence of 0.01 to 0.03% in voluntary screening programs for the general population would suggest. Seven of our cases had previously tested positive, and two were previously unknown cases, indicating that people at high risk are clustered in the medicolegal autopsy series. Of the six cases in an early stage of infection, three committed suicide suggesting the importance of HIV-screening in suicide cases in tracing symptomless HIV carriers. Five of the cases were detected in 1990, a year when the number of new HIV infections had more than doubled compared to the previous two years. This suggests that testing of medicolegal autopsies as surrogate tests for the population gives useful information even in low-prevalence areas like Finland. Such testing has none of the ethical problems of many other back-up surveys, and may be particularly sensitive to early changes in epidemiology.  相似文献   
157.
158.
The conflict and animosity that sometimes accompanies child custody disputes can give rise to the propagation of allegations of child sexual abuse. To characterize the magnitude of the problem, the present study attempted to determine whether and to what extent child sexual abuse allegations predominate in family court litigation. The entire one-year caseload of a county family court docket was systematically reviewed and coded. Methodical evaluation of 603 family court files yielded base rates of pertinent allegations and other information profiling the cases. The findings did not support the contention that sexual abuse allegations are commonplace in child custody disputes. Sexual abuse allegations were made in 2% of cases in which custody or access was contested and in only 0.8% of the cases overal. Implications of the findings for future research were discussed.The authors gratefully acknowledge the assistance of the Honorable William R. Campbell and Barbara Scott, Clerk of Court for the South Carolina Fifth Judicial Circuit, as well as the contributions of Angie Newton, Frank Robinson, and Kimberly Ellis in the data collection process.  相似文献   
159.
160.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号