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   25185篇
  免费   1239篇
各国政治   914篇
工人农民   1779篇
世界政治   1306篇
外交国际关系   814篇
法律   16643篇
中国共产党   2篇
中国政治   111篇
政治理论   4765篇
综合类   90篇
  2023年   78篇
  2021年   91篇
  2020年   430篇
  2019年   451篇
  2018年   1764篇
  2017年   1705篇
  2016年   1614篇
  2015年   568篇
  2014年   554篇
  2013年   1834篇
  2012年   654篇
  2011年   1358篇
  2010年   1478篇
  2009年   1104篇
  2008年   1191篇
  2007年   1148篇
  2006年   527篇
  2005年   496篇
  2004年   603篇
  2003年   500篇
  2002年   431篇
  2001年   676篇
  2000年   612篇
  1999年   483篇
  1998年   250篇
  1997年   185篇
  1996年   211篇
  1995年   215篇
  1994年   189篇
  1993年   178篇
  1992年   314篇
  1991年   314篇
  1990年   297篇
  1989年   277篇
  1988年   307篇
  1987年   261篇
  1986年   323篇
  1985年   317篇
  1984年   257篇
  1983年   235篇
  1982年   182篇
  1981年   154篇
  1980年   143篇
  1979年   227篇
  1978年   122篇
  1977年   101篇
  1975年   94篇
  1974年   125篇
  1973年   79篇
  1972年   79篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
More than a decade after NAFTA (North American Free Trade Agreement) entered into force, the environmental effects of agricultural trade liberalization in Mexico are still controversial, emerging, and not fully understood. This paper contributes to the literature that aims to explore trends in input use in the agricultural sector in Mexico during the post-NAFTA period among both commercial/industrial and traditional/rainfed farmers, and examines the influence of the national and multilateral institutional framework on these outcomes. We decompose the post-NAFTA agricultural production data into scale, technique and composition effects to estimate the impact that trade liberalization has had on the use of fertilizer and land use, two key agricultural inputs for which reliable aggregate data is available. We conclude that among commercial farmers patterns of crop type specialization and significant technological improvements have led to some declines in fertilizer use but they have been offset by growth in fertilizer use associated with growing agricultural output. Among traditional farmers increased output and specialization in land-intensive grain crops are contributing to an increase in land under cultivation and technological improvements show the potential, but not yet not the strength, to counteract these effects. We analyse the environmental institutional framework and rural development plans, observing that institutional weaknesses have, in several instances, reduced the environmental benefit of technique and composition effects. We conclude with recommendations about how the Mexican agricultural sector might reap the environmental benefits of international agricultural trade.  相似文献   
152.
In two recent cases, Grutter v. Bollinger, 539 U.S. 306. (2003) and Gratz v. Bollinger, 539 U.S. 244. (2003), the Supreme Court held that the Equal Protection Clause permitted state schools to use race-sensitive admissions in order to obtain the educational benefits that flow from a diverse student body. The diversity-based argument for race-sensitive admissions, scholarships, awards, and other opportunities at universities should have been rejected because it does not consider the full range of costs and benefits and because the more narrow educational effects probably weigh against such programs. However, this does not suggest that applicants’ race, ethnicity, and gender should be ignored. Rather the same consideration that led to the defeat of the diversity argument, i.e., reasoning capacity, supports the consideration of demographic factors. However, attention to such factors further undermines the consequentialist case for affirmative action.  相似文献   
153.
This article reports the results of a study of the antecedents of long-term success in community mediation. Seventy-three mediation sessions were recorded and content analyzed. The participants were interviewed at two points: immediately after mediation and 4 to 8 months later. No relationship was found between the quality of the agreements—i.e., the extent to which they solved immediate problems- and long-term success as measured by compliance, improved relations between the parties, and the absence of new problems. On the other hand, joint problem solving by the disputants was related to complainant perceptions of improved relations with the other party. Also respondent perceptions that the mediation had been fair and that all the problems had come out were related to all aspects of long-term success in the eyes of the complainant. The latter results support a procedural justice analysis of mediation and underline the importance of mediator attention to the respondent.  相似文献   
154.
155.
156.
157.
Despite the recent increase in public and professional interest in the problem of wife beating in Arab society, in Israel, and in the rest of the Arab world, there is a serious lack of empirical research on different dimensions of the problem in those societies. This paper presents the results of a survey conducted among a systematic random sample of 362 Arab husbands from Israel, in an attempt to examine the contribution of patriarchal ideology toward explaining their beliefs about wife beating. Although about 58% of the participants indicated that there is no excuse for a man to beat his wife, 15–62% still justified wife beating on certain occasions (e.g., adultery, failure to obey husbands, disrespect for parents and relatives). In addition, although the participants tended to perceive abusive and violent husbands as responsible for their behavior, 52% still expressed understanding of that behavior and, on some occasions, 23–43% even blamed the wife for violence against her. Regression and multiple regression analyses revealed that over and above the participants' age and level of education, their masculine sex-role stereotypes, negative and traditional attitudes toward women, nonegalitarian marital role expectations, and familial patriarchal beliefs were the most significant predictors of beliefs about wife beating. Implications of the results and limitations of the study are also discussed.  相似文献   
158.
159.
160.
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