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   23439篇
  免费   820篇
  国内免费   282篇
管理学   377篇
劳动科学   5篇
民族学   414篇
人才学   2篇
人口学   579篇
丛书文集   2853篇
理论方法论   1550篇
综合类   15351篇
社会学   2009篇
统计学   1401篇
  2024年   45篇
  2023年   184篇
  2022年   219篇
  2021年   312篇
  2020年   402篇
  2019年   454篇
  2018年   409篇
  2017年   497篇
  2016年   466篇
  2015年   612篇
  2014年   1635篇
  2013年   2308篇
  2012年   1869篇
  2011年   1884篇
  2010年   1616篇
  2009年   1424篇
  2008年   1452篇
  2007年   1324篇
  2006年   1289篇
  2005年   1221篇
  2004年   1251篇
  2003年   1145篇
  2002年   913篇
  2001年   762篇
  2000年   438篇
  1999年   123篇
  1998年   52篇
  1997年   39篇
  1996年   31篇
  1995年   28篇
  1994年   22篇
  1993年   25篇
  1992年   12篇
  1991年   8篇
  1990年   6篇
  1989年   10篇
  1988年   8篇
  1986年   4篇
  1985年   6篇
  1984年   8篇
  1983年   4篇
  1982年   4篇
  1981年   9篇
  1980年   3篇
  1979年   4篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
层状地貌的广泛分布形成了西南地区的一个主要特;证据表明本区发育了一级夷平面,二~三级剥蚀面及多级河流(湖滨)阶地,并构成了三种层状地貌结构,即:夷平面—剥蚀面—湖滨阶地—湖积平原—湖泊;夷平面—剥蚀面—河流阶地;夷平面—剥蚀面。  相似文献   
212.
完善我国个人所得税制度的思考   总被引:9,自引:0,他引:9  
费用扣除不合理,税率结构不科学,税收征管不力等是我国个人所得税制度存在的主要问题。应明确个税的税种归属,实行综合所得税制,调整税率结构,建立起有利于援助弱势群体的负所得税制度。  相似文献   
213.
新中国成立后,毛泽东充分论证了农业发展对国家经济、政治、国防发展的重要作用,提出了"农业是国民经济的基础"的思想,这个思想对于当前我国农业发展仍有着重要的现实意义。农业在国民经济中的功能决定了农业始终是我国国民经济的基础。但是,我们对农业的重视不能仅仅停留在农业对国民经济贡献的认识上,更不能继续采取对农业进行索取的做法,而应把农业放在整个国民经济协调发展的全局和世界视野的高度上。  相似文献   
214.
中国与阿拉伯国家、伊朗、以色列和土耳其关系是中国中东政策的重点。土耳其和中国在国土面积、资源条件等方面相差很大,但在两国关系上却具有一定的对称性。本文试从经贸发展和国际关系两方面来考察对称性和双边关系之间的相互影响。欧亚大陆,特别是上海合作组织,是密切两国关系最好的平台。建立土中外交轴心有助于消除两国间的分歧与隔阂,推动土中安全领域的合作和中国的中东外交。  相似文献   
215.
伊朗是阿富汗的西邻,在阿富汗有着重要影响力,尤其是在语言、宗教和文化等方面。从美国发动打击阿富汗“塔利班”政权的战争后至今,伊朗在阿富汗政治和经济重建、民族和解、打击毒品走私等方面都发挥着重要作用。伊朗反对美军在阿富汗长期存在。2014年后,国际安全援助部队将大部分撤出阿富汗。伊朗会继续推动阿富汗政治、社会稳定,防止“塔利班”东山再起,参与阿富汗经济重建,但其政策也会根据地区和国际形势变化进行调整。  相似文献   
216.
Based on a sample of British dual earner families with young children drawn from the National Diet and Nutrition Survey, the paper examines their food practices, in particular the conditions under which families are able to eat together or not during the working week. The concept of synchronicity is drawn upon to shed light on whether meals and meal times are coordinated in family life and the facilitators and constraints upon coordination. The paper suggests that whether families eat together is not only influenced by parents' work time schedules but also children's timetables relating to their age and bodily tempos, their childcare regimes, their extra-curricular activities and the problem of coordinating different food preferences and tastes.  相似文献   
217.
Using data from Finland, this paper contributes to a small but growing body of research regarding adult children's education, occupation, and income and their parents' mortality at ages 50+ in 1970–2007. Higher levels of children's education are associated with 30–36 per cent lower parental mortality at ages 50–75, controlling for parents' education, occupation, and income. This association is fully mediated by children's occupation and income, except for cancer mortality. Having at least one child educated in healthcare is associated with 11–16 per cent lower all-cause mortality at ages 50–75, an association that is largely driven by mortality from cardiovascular diseases. Children's higher white-collar occupation and higher income is associated with 39–46 per cent lower mortality in the fully adjusted models. At ages 75+, these associations are much smaller overall and children's schooling remains more strongly associated with mortality than children's occupation or income.  相似文献   
218.
The history of the Ukrainian Hetmanate has been studied from the perspective of war, political struggle, and diplomacy. This article studies various aspects of women’s lives in Cossack society: their legal status, economic rights, role in society, relations with husbands and sons, the tradition of women’s presence at formal receptions, and their interference in political life. It is also about “women in politics,” “witches,” sex and premarital relations, kidnappings, and love affairs. The general argument is that the position of Ukrainian women was closer to that of women in Catholic Poland than in Muscovy.  相似文献   
219.
This article examines the dramaturgical challenges of doing boundary work for a group of college women living with non‐college women at an overcrowded rental. To regulate tenant conduct and maintain their sense of self‐worth, the college women engaged in defensive othering and constructed their identity as “high‐quality” people on the basis of their characterization of their less‐educated roommates as “low‐quality” people. Their strategy of gaining self‐worth at their roommates' expense violated basic rules of social interaction that require participants to give face to gain face. This study shows that, in addition to weakening group solidarity and reproducing social inequalities, defensive othering also undermines subordinates' effort to gain self‐worth in the co‐presence of other subordinates. A video abstract is available at http://tinyurl.com/yath4o65  相似文献   
220.
This study provides an historical overview of the IDF Spokesperson’s Unit (ISU) from the early years of the State of Israel until 2009. Analyzing five periods during which the ISU played a key role in Israel's public diplomacy, this research sheds light on the challenges the ISU faced in different periods and circumstances and examines how the ISU tried to modify its methods and actions in response to geopolitical changes and media development, albeit not always successfully. The study suggests better understanding the adaptation process by applying a three-layer framework for analysis: the tactical layer, the strategic layer and the perceptional layer. The findings of this work demonstrate that in adapting to new circumstances, the ISU focused mainly on the tactical response level, with the result that it did not undertake any review or debate over the need for deeper perceptional changes in ISU policies.  相似文献   
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