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   11127篇
  免费   358篇
各国政治   600篇
工人农民   463篇
世界政治   724篇
外交国际关系   420篇
法律   6555篇
中国共产党   3篇
中国政治   75篇
政治理论   2548篇
综合类   97篇
  2020年   137篇
  2019年   178篇
  2018年   255篇
  2017年   285篇
  2016年   282篇
  2015年   196篇
  2014年   202篇
  2013年   1344篇
  2012年   267篇
  2011年   280篇
  2010年   246篇
  2009年   266篇
  2008年   321篇
  2007年   277篇
  2006年   325篇
  2005年   290篇
  2004年   306篇
  2003年   271篇
  2002年   275篇
  2001年   312篇
  2000年   306篇
  1999年   228篇
  1998年   170篇
  1997年   156篇
  1996年   139篇
  1995年   151篇
  1994年   135篇
  1993年   151篇
  1992年   212篇
  1991年   231篇
  1990年   218篇
  1989年   223篇
  1988年   201篇
  1987年   218篇
  1986年   214篇
  1985年   199篇
  1984年   196篇
  1983年   197篇
  1982年   129篇
  1981年   110篇
  1980年   99篇
  1979年   117篇
  1978年   103篇
  1977年   96篇
  1976年   80篇
  1975年   73篇
  1974年   87篇
  1973年   90篇
  1972年   74篇
  1968年   62篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
941.
942.
Although data are inconclusive, popular perception has linked military combat, posttraumatic stress disorder (PTSD), and criminal behavior. This paper discusses the multifactorial elements of this association that include both conscious and unconscious parameters of psychologic functioning. Testimony on combat-related PTSD has been presented in the courtroom to support veterans' claims of not guilty by reason of insanity (NGRI) and diminished capacity and for consideration during judicial sentencing. Because there is a known connection between the degree of combat involvement and PTSD, verification through collateral sources of the veteran's report of combat experiences is an important component of forensic assessment. The DSM-III-defined diagnosis of PTSD and the presence of a dissociative state have particular relevance in NGRI determinations. In other aspects of the judicial process demonstration of the absolute presence or absence of PTSD is often irrelevant and should be replaced by efforts to establish plausible links between provable combat experiences and the circumstances of the crime.  相似文献   
943.
This paper investigates the performance of liability rules in two-party stochastic externality problems where negotiations are feasible and side payments are based on the realized level of externalities. Results show that an increase in polluter liability does not necessarily increase safety or efficiency in cases where the polluter is risk neutral. Complete polluter liability is found to yield Pareto optimality. When either party is risk averse, an increase in polluter liability may sometimes reduce safety and efficiency. If the polluter is risk neutral and the victim is risk averse, Pareto optimality is only achieved by assigning full liability on the polluter, i.e. giving the victim complete property rights to a clean environment. If the polluter is risk averse and the victim is risk neutral, no level of polluter liability is optimal. In this case, optimality can only be achieved through a contract on abatement activities, such that the risk-averse polluter receives a guaranteed payment regardless of the stochastic outcome.  相似文献   
944.
This second of a two-part article on global policy trends in agricultural extension deals with complexity. Policy differs enormously from country to country. The author believes that, rather than producing confusion and frustration in the field, the great variety of methodologies, institutional frameworks, and program priorities provides a rich field of ideas for study and practice. The major position in the article is that extension must be dealt with as part of a total agricultural-development process rather than an isolated subsystem for transferring technology to farmers.  相似文献   
945.
946.
947.
Debates about child custody following parental separation often have been framed in terms of a battle between the competing rights of different family members. In the United States, advocates of mothers’ rights square off against proponents of fathers’ rights, with each side claiming to truly represent children's rights. Of course, not all advocates lay claim to children's rights in contact and custody disputes merely as a tactical maneuver. Some experts believe that children are entitled to (and benefit from) their own, independent legal advocate in custody cases. In theory, at least, the position that children lay claim to a third set of independent rights is strongly held in Europe, more strongly than in many U.S. states, because of the adoption of United Nations Convention on the Rights of the Child in Europe, but not in the United States. In this article, we examine children's rights in custody disputes from a European perspective, particularly children's legal right to contact with their parents, as well as the children's right to be heard in custody and contact disputes. We find that, despite differences in legal theory, tradition, and family demographics, European countries ultimately face a familiar reality: Custody and contact disputes are, in reality, more about renegotiating family relationships than they are a matter of a mother's, father's, or child's rights.  相似文献   
948.
Despite the burdens that students and institutions assume when underwriting educational careers, very little is known about completion rates, risk factors, and successful strategies of criminology/criminal justice (CCJ) graduate programs. Consequently, the present study tracks 287 master’s and 70 doctoral students who entered the Florida State University CCJ program during the 1991–2000 academic years. Almost two-thirds of this cohort earned an advanced degree. Younger students with higher GRE scores were more likely to complete the master’s program. Successful doctoral degree recipients tended to have lower GRE scores, be non-White, and earn their master’s degrees in-house. In terms of time-to-degree, it took over two years to earn an M.A. and slightly more than six years to negotiate the Ph.D. Implications are explored for the program, the university, and the discipline.  相似文献   
949.
950.
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