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   73865篇
  免费   3343篇
  国内免费   1篇
各国政治   4510篇
工人农民   3000篇
世界政治   6141篇
外交国际关系   4071篇
法律   35354篇
中国共产党   145篇
中国政治   1081篇
政治理论   20910篇
综合类   1997篇
  2021年   462篇
  2020年   1210篇
  2019年   1531篇
  2018年   1729篇
  2017年   2039篇
  2016年   2232篇
  2015年   1899篇
  2014年   2185篇
  2013年   10656篇
  2012年   1801篇
  2011年   1981篇
  2010年   2111篇
  2009年   2324篇
  2008年   2077篇
  2007年   2104篇
  2006年   2230篇
  2005年   2104篇
  2004年   1926篇
  2003年   1674篇
  2002年   1679篇
  2001年   1794篇
  2000年   1558篇
  1999年   1360篇
  1998年   1136篇
  1997年   1009篇
  1996年   976篇
  1995年   929篇
  1994年   957篇
  1993年   961篇
  1992年   1035篇
  1991年   1103篇
  1990年   1021篇
  1989年   1062篇
  1988年   1065篇
  1987年   1070篇
  1986年   1054篇
  1985年   1101篇
  1984年   1003篇
  1983年   1053篇
  1982年   937篇
  1981年   887篇
  1980年   685篇
  1979年   729篇
  1978年   624篇
  1977年   559篇
  1976年   503篇
  1975年   428篇
  1974年   447篇
  1973年   462篇
  1972年   382篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
132.
Legal context: The relatively informal agreements setting up the TrilateralCooperation (TC) among the world's three most important patentoffices are contrasted with formal multinational treaties suchas the Patent Law Treaty and the abortive Substantive PatentLaw Treaty. Key points: After its inception in 1983, the TC concentrated initially ondeveloping and implementing standards for electronic storageand retrieval of prior art documents, and facilitation of searching.This was later extended to electronic sharing of priority documentsand to standardization and searching of DNA sequence databases.More recently emphasis has been placed on harmonization of searchingand examination procedures, and working groups have comparedthe approaches of the Trilateral Offices (TOs) to the patentabilityof claims in areas of new technology. Encouragingly, the resultsare usually the same, although the specific objections raisedmay differ. The ultimate goal is to reach a situation in whicha claim allowed by one TO would be accepted by the others withoutfurther examination. Practical significance: The TC has already facilitated search and examination, leadingto lower costs and shorter pendency times than would otherwisebe the case. Further progress depends on harmonization of substantivepatent law, which in turn depends on the willingness of theUSA to accept a first-to-file system.  相似文献   
133.
This article provides an editorial introduction to the following three related articles on the growing use and influence of social science research in family law. It first considers why this has become problematic and identifies some common strategies used by advocates, sometimes under the guise of scholarship, to destroy the standing of research findings contrary to their ideological or political position. Then it discusses briefly the remedies proposed to mitigate these kinds of problems within the following three articles.  相似文献   
134.
This article summarizes some of the literature reviewed by the Girls Study Group, which is a federally funded project aimed at assessing the causes of girls’ delinquency as well as evaluating programs to address it. The literature reveals that a number of factors such as family dysfunction, involvement with antisocial peers, and living in disadvantaged neighborhoods are correlated with delinquency for both boys and girls. Some factors, however, are gender sensitive, meaning that either girls are more exposed to a given risk factor than boys or react somewhat differently to a given risk factor. Girls have higher rates of exposure to sexual assault, which is associated with delinquency and, although more research is needed, they are more affected by the impacts of early puberty, when it is coupled with harsh parenting and disadvantaged neighborhoods. This article discusses some implications of the research on correlates of delinquency for programming for girls and makes recommendations for program selection.  相似文献   
135.
The American Law Institute proposes that in contested physical custody cases the court should allocate to each parent a proportion of the child's time that approximates the proportion of time each has spent performing caretaking functions in the past. Examined through the lens of child development research, the approximation rule is unlikely to improve on the best interests standard. It is difficult to apply; is perceived as gender‐biased; creates a new focus for disputing parents; renders a poor estimate of parents’ contributions to their child's best interests; overlooks parents’ intangible, yet significant, contributions to their child's well‐being; and miscalculates the essence of how a child experiences the family. A preferable alternative is a better defined, contemporary best interests standard that accommodates new knowledge and reforms that encourage nonadversarial, individualized resolutions of custody disputes.  相似文献   
136.
137.
138.
139.
140.
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