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   18250篇
  免费   462篇
  国内免费   1篇
管理学   2411篇
民族学   91篇
人口学   1530篇
丛书文集   81篇
教育普及   3篇
理论方法论   1591篇
综合类   180篇
社会学   9014篇
统计学   3812篇
  2023年   96篇
  2021年   107篇
  2020年   239篇
  2019年   367篇
  2018年   407篇
  2017年   587篇
  2016年   417篇
  2015年   297篇
  2014年   435篇
  2013年   3644篇
  2012年   513篇
  2011年   513篇
  2010年   381篇
  2009年   370篇
  2008年   405篇
  2007年   383篇
  2006年   422篇
  2005年   385篇
  2004年   329篇
  2003年   291篇
  2002年   341篇
  2001年   444篇
  2000年   428篇
  1999年   431篇
  1998年   290篇
  1997年   267篇
  1996年   307篇
  1995年   292篇
  1994年   341篇
  1993年   305篇
  1992年   343篇
  1991年   335篇
  1990年   342篇
  1989年   305篇
  1988年   278篇
  1987年   255篇
  1986年   240篇
  1985年   252篇
  1984年   260篇
  1983年   184篇
  1982年   185篇
  1981年   148篇
  1980年   168篇
  1979年   171篇
  1978年   140篇
  1977年   128篇
  1976年   114篇
  1975年   132篇
  1974年   95篇
  1973年   77篇
排序方式: 共有10000条查询结果,搜索用时 281 毫秒
251.
The April 1993 CPS differs from the March 1993 CPS in a number of respects. The April 1993 CPS supplement surveys only workers, whereas the March CPS examines the noncash benefits received by all Americans. The April CPS asks workers about health coverage in the week in which the questions were fielded, whereas the March CPS asks about coverage in the preceding year. In April 1993, there were 112.5 million civilian American workers between the ages of 18 and 64 with jobs. Eighty-two million (73 percent) of them worked for an employer that sponsored a health insurance plan, and 65 million (58 percent of all workers) participated in their employer's health plan. About one-third of workers at firms with fewer than 10 employees had employers who offer health benefits; about one-quarter of all of the workers in these firms participated in their employer's plan. Conversely, 94 percent of workers at firms with more than 1,000 employees had an employer who sponsored health benefits, and over 77 percent of these workers participated in their employer's plan. There are 16.5 million American workers whose employers sponsored health benefits but who did not participate in these benefits. Over one-half of these workers (8.5 million) chose not to be covered. Another 36 percent of these workers (5.9 million) did not participate because they were ineligible or denied coverage. Over 66 percent of the ineligible workers did not participate because they were part-time, contract, or temporary workers. Another 26 percent had not yet completed a probationary period. Among the reasons that those who chose not to participate in their employer's coverage, the vast majority (75 percent) stated they were covered by another health care plan. Twenty-nine percent stated that they chose not to purchase coverage because it was too costly or that they did not need or want the coverage. In 1993, there were 16.7 million workers with no health insurance coverage. The vast majority of these workers (95 percent) were employed by private employers. Sixty-six percent of the workers with no health insurance coverage were self-employed or worked for firms with fewer than 100 employees.  相似文献   
252.
253.
254.
Alternative healing is an idea whose time has come, and 1993 was the critical year for that recognition. So believes internist David Edelberg, founder of the Chicago Holistic Center. There patients can see one of four allopathic physicians as well as practitioners in 37 additional therapies, including acupuncture, infant massage, homeopathy, nutrition counseling, and Ayurvedic medicine.  相似文献   
255.
This paper considers the application of Stein-type estimation procedure for the coefficients in a linear regression model when data are available from replicated experiment. Two families of estimators characterized by a single scalar are proposed and their large sample asymptotic properties are derived. These are utilized for comparing the performances of the two estimators along with the conventional estimator and conditions for the superiority of one estimator over the other are deduced.  相似文献   
256.
"This article presents some of the latest available figures on illegal immigration in Japan, a process that did not assume significant proportions until the mid-1980s. It also discusses briefly the latest developments around 'immigration' policy--more precisely, the law on the entry and exit of aliens."  相似文献   
257.
Outdoor structured activities, such as Ropes Challenge Courses, are typically utilized as interventions for youth coming from urban settings. Evaluation of such programs is scanty at best. In this instance, the course experience is used as a prevention tool for high risk youth in a remote, rural setting of high unemployment, alcohol problems, and low income. The authors discuss the effectiveness of this approach, and the intended and unintended consequences for the rural community at large. The evaluation design relies on extensive qualitative methodology as well as quantitative methods to capture the unique nature of this rural project.  相似文献   
258.
The story of Anna O. has loomed large in psychoanalytic history, but few social workers know that the young woman, who was so influential in the development of Freud's thinking, became a pioneer social worker in Germany. The story of the transformation of the troubled young woman, who was actually Joseph Breuer's patient, is the focus of this paper. In addition, some of the facts of the case are discussed as social constructions. Anna O./ Bertha Pappenheim participated in the creation of the talking cure and eventually went on to be a leading feminist, developer of social programs for women, and social reformer.  相似文献   
259.
260.
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