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   71283篇
  免费   3291篇
各国政治   4522篇
工人农民   2982篇
世界政治   6276篇
外交国际关系   3856篇
法律   34238篇
中国共产党   11篇
中国政治   754篇
政治理论   20986篇
综合类   949篇
  2021年   410篇
  2020年   1169篇
  2019年   1521篇
  2018年   1695篇
  2017年   2010篇
  2016年   2197篇
  2015年   1831篇
  2014年   2105篇
  2013年   10574篇
  2012年   1698篇
  2011年   1806篇
  2010年   1865篇
  2009年   2089篇
  2008年   1844篇
  2007年   1826篇
  2006年   1943篇
  2005年   1830篇
  2004年   1740篇
  2003年   1578篇
  2002年   1582篇
  2001年   1804篇
  2000年   1556篇
  1999年   1360篇
  1998年   1160篇
  1997年   1030篇
  1996年   990篇
  1995年   950篇
  1994年   988篇
  1993年   988篇
  1992年   1043篇
  1991年   1077篇
  1990年   1012篇
  1989年   1071篇
  1988年   1046篇
  1987年   1062篇
  1986年   1049篇
  1985年   1099篇
  1984年   983篇
  1983年   1048篇
  1982年   937篇
  1981年   892篇
  1980年   695篇
  1979年   746篇
  1978年   612篇
  1977年   560篇
  1976年   521篇
  1975年   442篇
  1974年   437篇
  1973年   437篇
  1972年   390篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
122.
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   
123.
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   
124.
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   
125.
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   
126.
127.
128.
129.
130.
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