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   76195篇
  免费   3282篇
  国内免费   10篇
各国政治   4597篇
工人农民   3072篇
世界政治   6277篇
外交国际关系   3896篇
法律   37762篇
中国共产党   96篇
中国政治   1508篇
政治理论   20926篇
综合类   1353篇
  2021年   417篇
  2020年   1170篇
  2019年   1531篇
  2018年   1729篇
  2017年   2033篇
  2016年   2216篇
  2015年   1830篇
  2014年   2113篇
  2013年   10696篇
  2012年   1911篇
  2011年   2232篇
  2010年   2125篇
  2009年   2301篇
  2008年   2148篇
  2007年   2097篇
  2006年   2237篇
  2005年   2084篇
  2004年   1994篇
  2003年   1802篇
  2002年   1784篇
  2001年   2023篇
  2000年   1743篇
  1999年   1541篇
  1998年   1178篇
  1997年   1014篇
  1996年   994篇
  1995年   946篇
  1994年   988篇
  1993年   993篇
  1992年   1127篇
  1991年   1191篇
  1990年   1123篇
  1989年   1142篇
  1988年   1142篇
  1987年   1129篇
  1986年   1126篇
  1985年   1157篇
  1984年   1047篇
  1983年   1087篇
  1982年   956篇
  1981年   904篇
  1980年   696篇
  1979年   762篇
  1978年   645篇
  1977年   578篇
  1976年   519篇
  1975年   467篇
  1974年   486篇
  1973年   475篇
  1972年   408篇
排序方式: 共有10000条查询结果,搜索用时 31 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