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   38933篇
  免费   1722篇
各国政治   1652篇
工人农民   1588篇
世界政治   2961篇
外交国际关系   1321篇
法律   24446篇
中国共产党   3篇
中国政治   218篇
政治理论   8140篇
综合类   326篇
  2020年   640篇
  2019年   736篇
  2018年   955篇
  2017年   1036篇
  2016年   1134篇
  2015年   820篇
  2014年   938篇
  2013年   3998篇
  2012年   952篇
  2011年   1044篇
  2010年   950篇
  2009年   1013篇
  2008年   1048篇
  2007年   1072篇
  2006年   1065篇
  2005年   940篇
  2004年   947篇
  2003年   880篇
  2002年   896篇
  2001年   1435篇
  2000年   1304篇
  1999年   1053篇
  1998年   609篇
  1997年   479篇
  1996年   473篇
  1995年   473篇
  1994年   495篇
  1993年   464篇
  1992年   710篇
  1991年   761篇
  1990年   726篇
  1989年   728篇
  1988年   712篇
  1987年   702篇
  1986年   770篇
  1985年   764篇
  1984年   652篇
  1983年   636篇
  1982年   496篇
  1981年   454篇
  1980年   387篇
  1979年   521篇
  1978年   312篇
  1977年   295篇
  1976年   264篇
  1975年   259篇
  1974年   301篇
  1973年   250篇
  1972年   234篇
  1971年   202篇
排序方式: 共有10000条查询结果,搜索用时 6 毫秒
131.
132.
133.
134.
135.
The formation of adequate mental health systems within prisons has accelerated as a result of successful class action lawsuits. Our recent national survey questioned all state correctional departments about the existence of standards in each system, compliance with such standards, prevalence of class action lawsuits involving the issue of providing adequate mental health services for inmates, issues related to consent decrees, available mental health resources within the correctional system, and the administrative structure of the mental health system. Our purpose was to identify those factors correlated with certified class action lawsuits involving issues related to mental health services. Twenty-one states were involved in such litigation. Only the presence of psychiatric hospitals operated by the department of corrections correlated with the presence of certified class action lawsuits involving mental health services. Prison systems larger than 15,000 inmates were at higher risk for such litigation. Smaller systems having psychiatric hospitals run by the state mental health agency appeared to be at less risk for such litigation.  相似文献   
136.
Bone fragments were stored in water for 2 years at room temperature and investigated serologically using the following methods: Absorption-elution, extraction of blood group substances and immunohistochemistry (PAP). All 3 methods gave essentially specific results for fresh bone tissue but with putrid bone tissue unspecific reactions were found predominantly with the absorption-elution and PAP techniques. In contrast, more specific reactions were obtained from the extracts although they were much weaker. From this it can be concluded that pure physical binding plays a substantial role in the unspecific reaction between antibodies and bone material. It is suggested that the relevant physical properties are altered by putrification.  相似文献   
137.
138.
This paper addresses two neglected areas in the research on the relationship between family violence and violence outside the home: violence other than parent-child abuse and the effect of gender. Specifically, we consider both parental and sibling violence as independent variables, nonfamily violence as the dependent variable, and gender as the specification variable. The data were collected from a sample of 306 students in Introductory Sociology and Social Problems classes. The finding of particular importance is that the interaction between the gender of both the aggressor and the victim has a significant effect on the relationship between violence within the home and nonfamily violence.  相似文献   
139.
This paper explores the capacity of alternative theoretical perspectives to explain the self-reported criminality of black and white young adult females. When criminal involvement is regressed on the theory operation-alizations separately by race, a key difference emerges: For white women, significant effects are clustered in the social-psychological theory groups (bonding, attitudes, and maturation), but for the black women the social-psychological variables have only scattered and inconsistent eflects. Instead, for black women structural indicators emerge as the important predictors of criminal involvement.  相似文献   
140.
Most studies that consider the factors influencing the decision to leave an abusive relationship rely on retrospective, self-report data. In addition to the biased samples that are frequently obtained in such investigations, the methodological shortcomings of survey research limit its explanatory power, particularly when applied to such sensitive topics as family violence. This report introduces an alternative method for studying the decision to leave an abusive relationship. Forty-five men and 68 women were studied using an experimental computer game of an abuse-like relationship. The tendency to leave this relationship was measured under four differing conditions of severity and frequency of abuse. A logit analysis revealed that the frequency of abuse was more consequential to women's decisions to leave, while severity of abuse was more salient for men. In addition, the hypothesized model, including frequency of abuse, severity of abuse, and locus of control, fits well for women but not for men. The implications of these findings, as well as the validity and future application of experimental games, are discussed.  相似文献   
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