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   16755篇
  免费   558篇
  国内免费   61篇
管理学   1802篇
劳动科学   11篇
民族学   192篇
人才学   2篇
人口学   1217篇
丛书文集   1192篇
理论方法论   1400篇
综合类   2462篇
社会学   7131篇
统计学   1965篇
  2023年   84篇
  2022年   105篇
  2021年   153篇
  2020年   245篇
  2019年   291篇
  2018年   381篇
  2017年   556篇
  2016年   374篇
  2015年   345篇
  2014年   425篇
  2013年   2242篇
  2012年   704篇
  2011年   778篇
  2010年   678篇
  2009年   573篇
  2008年   656篇
  2007年   719篇
  2006年   712篇
  2005年   639篇
  2004年   397篇
  2003年   375篇
  2002年   413篇
  2001年   459篇
  2000年   359篇
  1999年   340篇
  1998年   239篇
  1997年   205篇
  1996年   188篇
  1995年   209篇
  1994年   184篇
  1993年   185篇
  1992年   198篇
  1991年   203篇
  1990年   201篇
  1989年   168篇
  1988年   173篇
  1987年   196篇
  1986年   154篇
  1985年   159篇
  1984年   175篇
  1983年   151篇
  1982年   153篇
  1981年   121篇
  1980年   112篇
  1979年   122篇
  1978年   95篇
  1977年   79篇
  1976年   93篇
  1975年   109篇
  1974年   84篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
执政合法性的实质是公众对现实制度和权力的认同、支持和忠诚程度.巩固党执政的合法性基础,必须树立和落实好科学发展观,实现公众利益满足的公平性、全面性和可持续性.现行财政体制及其运行中存在的基层财政困难、地区间财政能力差距扩大、政府收支行为不规范等突出问题,严重侵蚀着执政合法性基础.必须按照体现公共性、公平性和法治化的原则,深化财政体制改革,建设公共财政体制,巩固执政合法性基础.  相似文献   
72.
The study investigates European American and Taiwanese grandmothers’ folk theories of childrearing and self‐esteem, building on an earlier comparison of mothers from the same families. Adopting methods that privilege local meanings, we bring grandmothers’ voices into the conversation about childrearing, thereby contributing to a deeper understanding of intergenerational nuances in folk theories. In each cultural case, 16 grandmothers of 3‐year‐olds participated in in‐depth interviews that were customized according to local communicative norms. Although self‐esteem emerged as a central organizing concept in the folk theories of European American mothers, grandmothers spoke in two voices, either echoing their daughters or invoking a counter‐discourse of wariness towards self‐esteem. By contrast, Taiwanese mothers and grandmothers resembled one another—but differed from their American counterparts—in treating self‐esteem as peripheral in childrearing. Results contribute to the growing consensus that self‐esteem is a culture‐specific childrearing goal and suggest that the European American tendency to valorize self‐esteem varies by generation.  相似文献   
73.
绿党是西方兴起的一种新的政治力量,其哲学观是把生态环境利益上升为人类最高利益,并以自然生态环境为国家社会中心的生态中心主义,它的出现带来的是对传统价值观念、经济发展模式的变革性的挑战,对宪法基本原则的挑战也不容忽视。其生态权利之上的价值观对宪法基本原则的挑战表现为人民主权原则的动摇、基本人权原则的错位、权力制约原则的变异和法治原则的化。  相似文献   
74.
Projecting losses associated with hurricanes is a complex and difficult undertaking that is wrought with uncertainties. Hurricane Charley, which struck southwest Florida on August 13, 2004, illustrates the uncertainty of forecasting damages from these storms. Due to shifts in the track and the rapid intensification of the storm, real-time estimates grew from 2 to 3 billion dollars in losses late on August 12 to a peak of 50 billion dollars for a brief time as the storm appeared to be headed for the Tampa Bay area. The storm hit the resort areas of Charlotte Harbor near Punta Gorda and then went on to Orlando in the central part of the state, with early poststorm estimates converging on a damage estimate in the 28 to 31 billion dollars range. Comparable damage to central Florida had not been seen since Hurricane Donna in 1960. The Florida Commission on Hurricane Loss Projection Methodology (FCHLPM) has recognized the role of computer models in projecting losses from hurricanes. The FCHLPM established a professional team to perform onsite (confidential) audits of computer models developed by several different companies in the United States that seek to have their models approved for use in insurance rate filings in Florida. The team's members represent the fields of actuarial science, computer science, meteorology, statistics, and wind and structural engineering. An important part of the auditing process requires uncertainty and sensitivity analyses to be performed with the applicant's proprietary model. To influence future such analyses, an uncertainty and sensitivity analysis has been completed for loss projections arising from use of a Holland B parameter hurricane wind field model. Uncertainty analysis quantifies the expected percentage reduction in the uncertainty of wind speed and loss that is attributable to each of the input variables.  相似文献   
75.
通过对三角帆蚌血细胞进行电镜观察,并根据形态特征将其血细胞分为三种类型,即无颗粒细胞、小颗粒细胞和大颗粒细胞.这三种血细胞不但各有其功能,而且能协同作用担当起机体的免疫防御反应.  相似文献   
76.
77.
The extent to which 4‐month attentional regulation during an infant‐mother still‐face situation and 12‐month attachment security during the Strange Situation predicted rates of compliance and noncompliance during a cleanup task at 36 months was examined longitudinally in 70 infant‐mother dyads. Hierarchical multiple regression analyses indicated that infants who showed more attentional regulation during the still‐face situation with mothers later showed a higher rate of committed compliance and a lower rate of situational compliance during cleanup with mothers. Furthermore, lower levels of attentional regulation were later associated with higher rates of assertive behavior, but only for infants in an insecure attachment relationship.  相似文献   
78.
Summary. Semiparametric mixed models are useful in biometric and econometric applications, especially for longitudinal data. Maximum penalized likelihood estimators (MPLEs) have been shown to work well by Zhang and co-workers for both linear coefficients and nonparametric functions. This paper considers the role of influence diagnostics in the MPLE by extending the case deletion and subject deletion analysis of linear models to accommodate the inclusion of a nonparametric component. We focus on influence measures for the fixed effects and provide formulae that are analogous to those for simpler models and readily computable with the MPLE algorithm. We also establish an equivalence between the case or subject deletion model and a mean shift outlier model from which we derive tests for outliers. The influence diagnostics proposed are illustrated through a longitudinal hormone study on progesterone and a simulated example.  相似文献   
79.
本文以二甘醇代替其它多元醇与已二酸反应合成聚酯多元醇 ,再以合适的OH/NCO比与二异氰酸酯TDI生产聚氨酯胶粘剂 .成本低 ,各项粘接性能达到或超过同类产品 .同时利用了制备乙二醇时的副产品二甘醇 ,一举数得  相似文献   
80.
湖南报业资源配置现状与问题分析   总被引:1,自引:1,他引:0  
以对湖南报业资源配置现状的调查为基础 ,从人力资源、媒体资源、信息资源、广告资源、受众资源等五个方面展开分析 ,探讨了湖南报业资源配置存在的主要问题 ,旨在为湖南报业资源的优化配置和湖南报业的发展提供借鉴。  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