全文获取类型
收费全文 | 11252篇 |
免费 | 212篇 |
国内免费 | 2篇 |
专业分类
管理学 | 1527篇 |
民族学 | 71篇 |
人才学 | 3篇 |
人口学 | 1010篇 |
丛书文集 | 74篇 |
理论方法论 | 1144篇 |
综合类 | 228篇 |
社会学 | 5785篇 |
统计学 | 1624篇 |
出版年
2021年 | 62篇 |
2020年 | 170篇 |
2019年 | 266篇 |
2018年 | 291篇 |
2017年 | 401篇 |
2016年 | 290篇 |
2015年 | 226篇 |
2014年 | 273篇 |
2013年 | 1811篇 |
2012年 | 389篇 |
2011年 | 361篇 |
2010年 | 290篇 |
2009年 | 277篇 |
2008年 | 268篇 |
2007年 | 316篇 |
2006年 | 281篇 |
2005年 | 282篇 |
2004年 | 257篇 |
2003年 | 188篇 |
2002年 | 227篇 |
2001年 | 279篇 |
2000年 | 239篇 |
1999年 | 216篇 |
1998年 | 172篇 |
1997年 | 159篇 |
1996年 | 155篇 |
1995年 | 146篇 |
1994年 | 150篇 |
1993年 | 149篇 |
1992年 | 151篇 |
1991年 | 149篇 |
1990年 | 153篇 |
1989年 | 147篇 |
1988年 | 133篇 |
1987年 | 148篇 |
1986年 | 117篇 |
1985年 | 147篇 |
1984年 | 158篇 |
1983年 | 141篇 |
1982年 | 123篇 |
1981年 | 89篇 |
1980年 | 111篇 |
1979年 | 114篇 |
1978年 | 102篇 |
1977年 | 87篇 |
1976年 | 89篇 |
1975年 | 99篇 |
1974年 | 94篇 |
1973年 | 69篇 |
1972年 | 61篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
971.
Jason M. Fletcher 《Journal of population economics》2011,25(1):201-218
A national sample of US teenagers combined with a complementary sample of US adults are used to examine the effects of teenage childbearing on health behaviors by comparing female siblings in both the teenage sample and a sample of adults. Additionally, miscarriage information available in the teenage sample is used to form comparison groups. Unlike previous estimates of the effects of teenage childbearing on health behaviors, the results using these US samples and research designs suggest that teenage childbearing has negligible effects on several measures of unhealthy behaviors for mothers and may be protective for drug use and binge drinking. 相似文献
972.
H.E. Hallam 《Population studies》2013,67(1):55-69
In five Lincolnshire villages between 1252 and 1478 there is evidence that men and women married fairly late before the Black Death, and that by 1348/9 the Western European marriage pattern of late and prudential marriage was well established. Households were usually nucleated; husbands were on average eight years older than their wives before 1348/9, and five years older after 1348/9. Marriages were short: according to the best calculation shorter before 1348/9 than after, most often terminated by the death of the first husband, and were unlikely to produce more than three children. Since there were more males than females amongst children and young adults, many men remained unmarried, but since the death rate of women was very high, men lived longer. 相似文献
973.
This paper presents an analysis of levels of life expectancy and their patterns of change among six socio-economically differentiated sub-populations of England and Wales for the period 1851–1911. Differences in mortality levels among these sub-groups and their rates of change are analyzed with respect to three groups of explanatory variables, viz., environmental, stratification and demographic variables. Their relative importance for different periods is assessed and discussed. The findings show consistency with two previous studies, which have suggested that medical advances had little effect on the increase in life expectancy during the second half of the nineteenth century. The present paper supports the results of one study in that public health measures affected life expectancies earlier, while subsequently, the increase in standards of living was more important. 相似文献
974.
Julie E. Backer 《Population studies》2013,67(3):318-338
The second part of this paper deals with the legal basis of medico-statistical data, and shows the type of report made by Medical Officers of Health and by private practitioners to the Norwegian Central Statistical Office. These reports deal with infectious diseases, with certain types of mental disease, and certain special diseases like tuberculosis. The system of classifying causes of death is also explained. Other sections deal with hospital and morbidity statistics and statistics obtained from recruiting authorities. 相似文献
975.
Michael Wallace Andrew S. Fullerton Mustafa E. Gurbuz 《Research in social stratification and mobility》2009
While union density in the public sector has increased in recent decades, private sector union density in the U.S. has declined steadily since the mid-1950s. Scholars have evoked a variety of explanations to account for the decline in union membership, but substantially less attention has been devoted to understanding the contribution of the union organizing process as governed by the National Labor Relations Board (NLRB). In this paper, we focus on two aspects of this process: union organizing effort (the effort to establish union representation elections to organize non-unionized workers) and union organizing success (success in winning union representation elections). Using annual time series data for the U.S. from 1948 to 2004, we show that there has been a long-term decline in both union organizing effort and union organizing success, which likely contributes to declining union density. We focus on three explanations for these changes: the political–legal environment for unions, deindustrialization and globalization, and employer opposition to unionization efforts. We find that each of these factors contributes to organizing effort and success and conclude with a discussion of the implications of this research for future mobilization efforts. 相似文献
976.
977.
Svetlana E. Martynova Yuri Glebovich Dmitriev Marina M. Gajfullina Yulia A. Totskaya 《Social indicators research》2017,133(3):1151-1164
The study offers a development of the social technologies of “service” municipal administration. The consumers’ opinions should be taken into consideration when determining the nomenclature and standards of their provision, which include the quality parameters that the consumers consider important. In addition, “service” relations imply the assessment of consumer satisfaction with the services and the correction of services based on the results of the assessment. Since this interaction implies communication between the municipal administration body and service users, it is necessary to focus on communicative technologies that are capable of providing a full cycle of service development and improvement for young entrepreneurs. Communications should help determine the expectations associated with a service, raise awareness thereof, and involve young people in the decisions related to the provision of services. 相似文献
978.
979.
980.
Alan E. Watson 《Social indicators research》2013,110(2):597-611
A societal decision to protect over 9 million acres of land and water for its wilderness character in the early 1960s reflected US wealth in natural resources, pride in the nation’s cultural history and our commitment to the well-being of future generations to both experience wild nature and enjoy benefits flowing from these natural ecosystems. There is no question that our relationship with wilderness has changed. Individually it is probably quite easy to examine differences in the role wilderness plays in the quality of our lives today compared to some previous time. But how the role of wilderness protection has changed for society is more difficult to describe. In only a few places do we have data across multiple decades that would allow us to even examine how users or their use may have changed over time. At the Boundary Waters Canoe Area Wilderness in northern Minnesota we are fortunate to have multiple studies that can give us some 40 years of insight into how some aspects of use have changed there. For example, an analysis of results of visitor studies at the Boundary Waters Canoe Area Wilderness in 1969, 1991 and 2007 reveal some big differences in who is out there today, most notably the presence of a much older, more experienced and better educated user population, almost exclusively white and predominantly male. It is time to decide whether the best thing for wilderness and or society is to try to restore historic patterns of use (to include younger people, the less wealthy and lower educated) in greater numbers, to try to identify new markets within growing underrepresented populations, or adapt our perception of wilderness stewardship to better include planning for emerging social values of a new generation with other indicators of well-being. A growing population with greater dependence on ecosystem services provided by protected nature could lead to wilderness protection becoming an important quantitative and qualitative element of quality of life indices in the very near future. 相似文献