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   793篇
  免费   55篇
管理学   61篇
民族学   5篇
人口学   93篇
丛书文集   8篇
理论方法论   112篇
综合类   12篇
社会学   499篇
统计学   58篇
  2023年   18篇
  2022年   4篇
  2021年   14篇
  2020年   30篇
  2019年   48篇
  2018年   38篇
  2017年   56篇
  2016年   43篇
  2015年   31篇
  2014年   42篇
  2013年   140篇
  2012年   55篇
  2011年   51篇
  2010年   23篇
  2009年   17篇
  2008年   33篇
  2007年   28篇
  2006年   24篇
  2005年   20篇
  2004年   22篇
  2003年   7篇
  2002年   10篇
  2001年   15篇
  2000年   6篇
  1999年   6篇
  1998年   5篇
  1997年   6篇
  1996年   4篇
  1995年   2篇
  1994年   3篇
  1993年   6篇
  1992年   6篇
  1991年   2篇
  1990年   2篇
  1989年   5篇
  1988年   3篇
  1986年   2篇
  1985年   1篇
  1984年   4篇
  1983年   4篇
  1982年   4篇
  1980年   3篇
  1979年   1篇
  1976年   1篇
  1975年   1篇
  1973年   2篇
排序方式: 共有848条查询结果,搜索用时 515 毫秒
201.
We investigate mortality differentials by marital status among older age groups using a database of mortality rates by marital status at ages 40 and over for seven European countries with 1 billion person-years of exposure. The mortality advantage of married people, both men and women, continues to increase up to at least the age group 85–89, the oldest group we are able to consider. We find the largest absolute differences in mortality levels between marital status groups are at high ages, and that absolute differentials are: (i) greater for men than for women; (ii) similar in magnitude across countries; (iii) increase steadily with age; and (iv) are greatest at older age. We also find that the advantage enjoyed by married people increased over the 1990s in almost all cases. We note that results for groups such as older divorced women need to be interpreted with caution.  相似文献   
202.
Recent research has focused on the design of special care units for residents with dementia, often identifying the social benefits of residentially scaled kitchen and dining areas. This qualitative case study examines how the environmental design features of two dining settings in one special care unit impact residents’ patterns of socialization and interaction at meal times. The first setting is a central dining room for 50 to 60 residents. The second setting is a small office with a residentially scaled kitchen, where once a week, the activity director invites six residents for lunch once a week. Within an ecological theoretical framework, the study findings reveal that, while mealtimes in both settings are highly anticipated, it is the complex relational ties between the operational, managerial, and environmental features of the settings which determine residents’ social interaction and satisfaction with their mealtime experiences.  相似文献   
203.
Large “big box” retail firms, including general merchandisers (e.g., Walmart and Target) as well as “category killers” (e.g., Home Depot and Toys “R” Us), have spread rapidly across the United States over the past 4 decades. These firms have been lauded for their presumed consumer benefits linked to expansive product selections and discount prices. They have also been criticized for their perceived negative effects on locally owned businesses, jobs, and wages. We provide an overview of the existing literature and point to promising directions for the development of theory and research on this topic. We, in this article, highlight the importance of this shift in economic organization and encourage sociologists to critically examine the stratification consequences of the rise and spread of these firms.  相似文献   
204.
This paper presents in-depth case study of a successful hybrid political and community organizing campaign to ensure equitable access to health care through the perspective of a grassroots San Francisco community-based organization, the Chinese Progressive Association (CPA), which has been organizing low-income Chinese immigrants for over four decades. First, it outlines the Health Care Security Ordinance (HCSO), which, since its passage in 2006, has established a near-universal health care access program, helping to make health care accessible and affordable to individuals living and working in San Francisco. Then it presents the campaign to save the HCSO, focusing on CPA’s participation in the HCSO coalition. Finally, it discusses health care as it relates to the San Francisco’s affordability crisis and the political economic context in which it is taking place. Despite the limitations inherent in small case studies like this one, it nevertheless provides a valuable opportunity to better understand how one politically progressive city attempted to address the problem of grossly inequitable health care access through the lens of community organizing, advocacy, and coalition building. San Francisco, like many major American cities today, is being confronted with rapid gentrification and growing economic inequality—the backdrop to the HCSO. Through innovative experiments in social responsibility like the HCSO, however, the city has made leaps in health care access. It concludes with lessons learned from local organizing and advocacy to save the HCSO as these may inform other local efforts to promote health care for all.  相似文献   
205.
Humans are continuously exposed to chemicals with suspected or proven endocrine disrupting chemicals (EDCs). Risk management of EDCs presents a major unmet challenge because the available data for adverse health effects are generated by examining one compound at a time, whereas real‐life exposures are to mixtures of chemicals. In this work, we integrate epidemiological and experimental evidence toward a whole mixture strategy for risk assessment. To illustrate, we conduct the following four steps in a case study: (1) identification of single EDCs (“bad actors”)—measured in prenatal blood/urine in the SELMA study—that are associated with a shorter anogenital distance (AGD) in baby boys; (2) definition and construction of a “typical” mixture consisting of the “bad actors” identified in Step 1; (3) experimentally testing this mixture in an in vivo animal model to estimate a dose–response relationship and determine a point of departure (i.e., reference dose [RfD]) associated with an adverse health outcome; and (4) use a statistical measure of “sufficient similarity” to compare the experimental RfD (from Step 3) to the exposure measured in the human population and generate a “similar mixture risk indicator” (SMRI). The objective of this exercise is to generate a proof of concept for the systematic integration of epidemiological and experimental evidence with mixture risk assessment strategies. Using a whole mixture approach, we could find a higher rate of pregnant women under risk (13%) when comparing with the data from more traditional models of additivity (3%), or a compound‐by‐compound strategy (1.6%).  相似文献   
206.
207.
The government are consulting on the introduction of legislation to give professionals powers to enter the homes of ‘vulnerable adults’ where abuse is suspected and remove the ‘victim’ without their consent . This article considers the consequences of such legislation for the ‘intimate citizenship’ of people with learning difficulties who have capacity to consent to sexual relationships. Proposals of the consultation are considered in terms of their practical relevance, finding that changes can be made with better guidance, resources, policy implementation and a sound evidence base for adult protection. A case is made that proposals contravene human rights, mental capacity laws and the ethos of personalisation, increasing the focus on risk in practice. An ecological model of vulnerability is supported, which offers an approach that can prevent sexual abuse through empowerment without the need for new legislation.  相似文献   
208.
Modern sampling designs in survey statistics, in general, are constructed in order to optimize the accuracy of estimators such as totals, means and proportions. In stratified random sampling a variance minimal solution was introduced by Neyman and Tschuprov. However, practical constraints may lead to limitations of the domain of sampling fractions which have to be considered within the optimization process. Special attention on the complexity of numerical solutions has to be paid in cases with many strata or when the optimal allocation has to be applied repeatedly, such as in iterative solutions of stratification problems. The present article gives an overview of recent numerical algorithms which allow adequate inclusion of box constraints in the numerical optimization process. These box constraints may play an important role in statistical modeling. Furthermore, a new approach through a fixed point iteration with a finite termination property is presented.  相似文献   
209.
210.
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