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   2031篇
  免费   62篇
  国内免费   20篇
管理学   247篇
民族学   18篇
人口学   201篇
丛书文集   131篇
理论方法论   211篇
综合类   742篇
社会学   485篇
统计学   78篇
  2024年   2篇
  2023年   17篇
  2022年   34篇
  2021年   43篇
  2020年   78篇
  2019年   73篇
  2018年   61篇
  2017年   82篇
  2016年   67篇
  2015年   57篇
  2014年   89篇
  2013年   262篇
  2012年   112篇
  2011年   123篇
  2010年   106篇
  2009年   107篇
  2008年   111篇
  2007年   108篇
  2006年   97篇
  2005年   76篇
  2004年   63篇
  2003年   58篇
  2002年   48篇
  2001年   52篇
  2000年   37篇
  1999年   25篇
  1998年   11篇
  1997年   13篇
  1996年   8篇
  1995年   12篇
  1994年   8篇
  1993年   4篇
  1992年   1篇
  1991年   9篇
  1990年   3篇
  1989年   5篇
  1988年   1篇
  1985年   3篇
  1984年   5篇
  1983年   5篇
  1982年   6篇
  1981年   5篇
  1980年   6篇
  1979年   11篇
  1978年   9篇
排序方式: 共有2113条查询结果,搜索用时 156 毫秒
1.
Poor quality of care may have a detrimental effect on access and take-up and can become a serious barrier to the universality of health services. This consideration is of particular interest in view of the fact that health systems in many countries must address a growing public-sector deficit and respond to increasing pressures due to COVID-19 and aging population, among other factors. In line with a rapidly emerging literature, we focus on patient satisfaction as a proxy for quality of health care. Drawing on rich longitudinal and cross-sectional data for Spain and multilevel estimation techniques, we show that in addition to individual level differences, policy levers (such as public health spending and the patient-doctor ratio, in particular) exert a considerable influence on the quality of a health care system. Our results suggest that policymakers seeking to enhance the quality of care should be cautious when compromising the level of health resources, and in particular, health personnel, as a response to economic downturns in a sector that traditionally had insufficient human resources in many countries, which have become even more evident in the light of the current health crisis. Additionally, we provide evidence that the increasing reliance on the private health sector may be indicative of inefficiencies in the public system and/or the existence of features of private insurance which are deemed important by patients.  相似文献   
2.
3.
Emergency material allocation is an important part of postdisaster emergency logistics that is significant for improving rescue effectiveness and reducing disaster losses. However, the traditional single‐period allocation model often causes local surpluses or shortages and high cost, and prevents the system from achieving an equitable or optimal multiperiod allocation. To achieve equitable allocation of emergency materials in the case of serious shortages relative to the demand by victims, this article introduces a multiperiod model for allocation of emergency materials to multiple affected locations (using an exponential utility function to reflect the disutility loss due to material shortfalls), and illustrates the relationship between equity of allocations and the cost of emergency response. Finally, numerical examples are presented to demonstrate both the feasibility and the usefulness of the proposed model for achieving multiperiod equitable allocation of emergency material among multiple disaster locations. The results indicate that the introduction of a nonlinear utility function to reflect the disutility of large shortfalls can make the material allocation fairer, and minimize large losses due to shortfalls. We found that achieving equity has a significant but not unreasonable impact on emergency costs. We also illustrate that using differing utility functions for different types of materials adds an important dimension of flexibility.  相似文献   
4.
A large literature demonstrates the direct and indirect influence of health on socioeconomic attainment, and reveals the ways in which health and socioeconomic background simultaneously and dynamically affect opportunities for attainment and mobility. Despite an increasing understanding of the effects of health on social processes, research to date remains limited in its conceptualization and measurement of the temporal dimensions of health, especially in the presence of socioeconomic circumstances that covary with health over time. Guided by life course theory, we use data from the British National Child Development Study, an ongoing panel study of a cohort born in 1958, to examine the association between lifetime health trajectories and socioeconomic attainment in middle age. We apply finite mixture modeling to identify distinct trajectories of health that simultaneously account for timing, duration and stability. Moreover, we employ propensity score weighting models to account for the presence of time-varying socioeconomic factors in estimating the impact of health trajectories. We find that, when poor health is limited to the childhood years, the disadvantage in socioeconomic attainment relative to being continuously healthy is either insignificant or largely explained by time-varying socioeconomic confounders. The socioeconomic impact of continuously deteriorating health over the life course is more persistent, however. Our results suggest that accounting for the timing, duration and stability of poor health throughout both childhood and adulthood is important for understanding how health works to produce social stratification. In addition, the findings highlight the importance of distinguishing between confounding and mediating effects of time-varying socioeconomic circumstances.  相似文献   
5.
本文主要对影响学校体育实施健康教育的因素进行了分类研究 ,为学校体育实施健康教育提供科学的参考依据。  相似文献   
6.
股权概念的认定   总被引:3,自引:0,他引:3  
从我国公司立法出发 ,在明确公司法人财产权及其与股权的关系的基础上 ,分析了关于股权的各种观点 ,对股权的概念作了一番理论探讨 ,认为股权是基于公司法的规定 ,股东因出资而享有的一种以经济利益为核心的 ,具有支配性和请求性以及可转让性的财产权利  相似文献   
7.
试析我国收入分配中的公平问题   总被引:3,自引:1,他引:2  
收入分配公平是一个历史性范畴,它的内涵随生产关系的变化而变化.正确理解我国收入分配的公平,必须搞清楚机会公平与结果公平、收入分配公平与社会主义市场经济的关系,确立初次分配注重效率,再分配注重结果公平的分配范式.在分配中,防止平均主义,保持合理差距,反对两极分化,坚持效率优先、兼顾公平的原则,促进我国生产力的发展,不断提高人民群众的生活水平.  相似文献   
8.
试论心理健康教育是思想政治教育的重要组成部分   总被引:2,自引:0,他引:2  
心理健康教育定位不当是思想政治教育长期效果较差的重要原因之一.文章分析了心理健康教育和思想政治教育的关系,认为现代思想政治教育应包括思想教育、政治教育、道德教育和心理教育四个方面,其中,心理教育是基础.心理健康教育是最初级、最低起点的教育,同时又是最深层次的教育.因此,心理健康教育是思想政治教育的重要组成部分.  相似文献   
9.
本文阐述了高等教育制度改革后贫困大学生的心理健康问题,分析了贫困大学生心理健康问题的原因,并提出了化解贫困大学生心理健康问题的对策。  相似文献   
10.
可转换公司债券的杠杆效应研究   总被引:1,自引:0,他引:1  
对于运用可转换公司债券进行理财的公司而言,充分了解可转换公司债券的杠杆效应是极其必要的。可转换公司债券在给发行公司带来财务杠杆效应的同时,也对发行公司的每股赢余产生稀释效应,但这一稀释效应要比股权融资对每股收益的影响低;可转换公司债券的价值与其股票的价值虽具有联动效应,但其间的关系较为复杂;可转换公司债券在为发行公司提供预防被收购的有利武器的同时,也为其持有者提供了间接购买股票的手段;可转换公司债券可缓解股东与债权人之间的代理问题、管理层和股东之间的利益冲突,有利于公司治理的结构完善。  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