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   7510篇
  免费   180篇
  国内免费   1篇
管理学   1063篇
民族学   44篇
人口学   644篇
丛书文集   22篇
理论方法论   633篇
综合类   70篇
社会学   3217篇
统计学   1998篇
  2023年   44篇
  2021年   49篇
  2020年   108篇
  2019年   171篇
  2018年   187篇
  2017年   275篇
  2016年   193篇
  2015年   126篇
  2014年   200篇
  2013年   1432篇
  2012年   225篇
  2011年   229篇
  2010年   171篇
  2009年   181篇
  2008年   192篇
  2007年   175篇
  2006年   192篇
  2005年   177篇
  2004年   151篇
  2003年   135篇
  2002年   164篇
  2001年   199篇
  2000年   199篇
  1999年   183篇
  1998年   135篇
  1997年   123篇
  1996年   104篇
  1995年   92篇
  1994年   137篇
  1993年   97篇
  1992年   124篇
  1991年   128篇
  1990年   115篇
  1989年   102篇
  1988年   88篇
  1987年   89篇
  1986年   90篇
  1985年   87篇
  1984年   91篇
  1983年   68篇
  1982年   70篇
  1981年   48篇
  1980年   59篇
  1979年   62篇
  1978年   48篇
  1977年   48篇
  1976年   38篇
  1975年   47篇
  1974年   40篇
  1971年   25篇
排序方式: 共有7691条查询结果,搜索用时 15 毫秒
111.
"While several studies (in both Turkish and English) have been made on migration to the Ottoman Empire from the Caucasus and the Balkans during the nineteenth century...very little systematic and comprehensive research on migration has been undertaken on the period since the establishment of the Turkish Republic. This article, which aims to partially fill the gap, is divided into three parts: the issue of national refugees (refugees of Turkish origin) in relation to Turkey's overall refugee policy; Turkey's policy towards national refugees; and the volume and causes of refugee migration to Turkey since 1945." (SUMMARY IN FRE AND SPA)  相似文献   
112.
The need for long-term care is driven both by the growth of the elderly population and changes in the age relations of morbidity, disability, and mortality. Data show these relations changed in the U.S. elderly population from 1982 to 1989. Chronic disability prevalence declined between the 1982 and 1989 U.S. National Long Term Care Surveys. Among those impaired, many persons using personal assistance to meet their needs shifted to the use of assisted housing and special equipment. The relation of these trends to other changes--such as the increasing educational level of the elderly population--is examined to estimate how future changes in disability and morbidity may affect the demand for long-term care. Disabilities at specific times as well as their transition rates were examined to determine how long individuals need long-term care. The analyses suggest that, while the amount of long-term care services needed will increase rapidly, the types and amounts of services used by the U.S. elderly population will undergo significant change.  相似文献   
113.
114.
115.
"The purpose of this article is to place Chinese labor migration from agriculture within the context of the literature on labor mobility in developing countries by comparing it to undocumented Mexican migration to the United States. The similarities fall within three general areas: the migration process, the economic and social position of migrants at their destination, and the agrarian structure and process of agricultural development that has perpetuated circular migration. The last section of the article draws upon these similarities, as well as differences between the two countries, to generate predictions concerning the development of labor migration in China."  相似文献   
116.
117.
The purposes of this study were to examine the prevalence of gambling among youth, compare rates of gambling between 1992 and 1995, and determine what levels of gambling frequency may be considered common and uncommon. The two samples included 122,700 Minnesota public school students in the 6th, 9th, and 12th grades in 1992; and 75,900 9th and 12th grade students in 1995. Students were administered the Minnesota Student Survey, a 126-item, anonymous, self-administered, paper-and-pencil questionnaire that inquires about multiple content domains, including gambling behaviors. The same questionnaire, with minor revisions to the gambling items, was administered in both 1992 and 1995 to students in their classrooms by the Minnesota Department of Education. There were slight decreases in overall gambling rates from 1992 to 1995. The majority of students gambled at least once during the past year. However, most did not play any game on a weekly/daily rate and did not report any problems associated with their gambling. Gender, grade, and race effects were found for gambling frequency. Boys gambled more often than girls, and 9th and 12th grade students gambled more often than 6th grade students. Asian American and White students reported lower rates of gambling frequency than Mexican/Latin American, African American, and American Indian students. From a statistical standpoint (i.e., beyond the 97.7 percentile), it may be considered in the uncommon range for girls to play two or more games at a weekly/daily rate, and for boys to play four or more games at a weekly/daily rate. Variables associated with gambling frequency included antisocial behavior, gender, and alcohol use frequency. Although the finding that gambling did not increase from 1992 to 1995 is encouraging, this is the first generation of youth to be exposed to widespread accessability to gambling venues and gambling advertising and it will be important to continue monitoring the prevalence of youth gambling.  相似文献   
118.
Over the past several decades, there has been a plethora of proposals that were developed in response to the ongoing debate on how best to solve the problems of the American health care delivery system. In the past decade, calls for modification of our health system have become even more resonant, as measures to control rising costs were unsuccessful and access to basic services was diminished for many Americans. The most recent addition to the list of proposals for modifying the health care system is the American Health Security Act of 1993, introduced by President Clinton in September 1993. This article will examine the position of the Clinton Administration on health reform and the core elements of the reform package.  相似文献   
119.
US theoretical models of assimilation of ethnic groups within a larger culture usually assume a unilinear, unidimensional process, which is simplistic, does not account for the persistence of ethnicity, and oversimplifies the process of social change. The argument is advanced that ethnic identity is both primordial and situational (a private sense that is self-maintaining, cumulative, deepening, and self-affirming). Typically, a person has one primary ethnic identity, but where ethnic boundaries overlap, there is instrumental identity. Chinese in Thailand mostly adopt Thai values, speak the Thai language, go to Thai schools, join Thai associations, and celebrate Thai religious festivals. Their secondary identity as Chinese is integrated into their associations with other Chinese and in the home through the use of the Chinese language. Their Chinese identity appears also in ancestor worship. There are symbiotic relationships between native Thais and Chinese Thais along class lines. The Chinese are known to have great financial and economic resources, while the Thais have political and administrative control. These differences with the power elites separate the Chinese from the Thais and interfere with assimilation. The power is balanced. If the Chinese gained in political and administrative power, the balance would be upset, and the interests of both groups would be threatened. The view of Whitten and Whitten acknowledges that individuals and groups act to make the best of the situation and are not merely victims of social forces. Actions are maintained and resisted. The important consideration in theory-building is not the terms of assimilation but the terms specifying the conduct of the group as a whole and as individuals in daily social interactions. The theoretical discussion focuses on border crossings, the Skinner view of the Chinese, bilingualism and cultural education, socioeconomic organizations, occupational differences, and religion, tradition, and ethnic identification.  相似文献   
120.
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