全文获取类型
收费全文 | 1580篇 |
免费 | 37篇 |
专业分类
管理学 | 253篇 |
民族学 | 9篇 |
人才学 | 2篇 |
人口学 | 130篇 |
丛书文集 | 12篇 |
理论方法论 | 146篇 |
综合类 | 20篇 |
社会学 | 890篇 |
统计学 | 155篇 |
出版年
2023年 | 7篇 |
2020年 | 25篇 |
2019年 | 20篇 |
2018年 | 25篇 |
2017年 | 45篇 |
2016年 | 29篇 |
2015年 | 20篇 |
2014年 | 38篇 |
2013年 | 249篇 |
2012年 | 42篇 |
2011年 | 48篇 |
2010年 | 44篇 |
2009年 | 37篇 |
2008年 | 60篇 |
2007年 | 43篇 |
2006年 | 41篇 |
2005年 | 43篇 |
2004年 | 56篇 |
2003年 | 38篇 |
2002年 | 55篇 |
2001年 | 21篇 |
2000年 | 27篇 |
1999年 | 38篇 |
1998年 | 26篇 |
1997年 | 20篇 |
1996年 | 23篇 |
1995年 | 21篇 |
1994年 | 24篇 |
1993年 | 21篇 |
1992年 | 22篇 |
1991年 | 23篇 |
1990年 | 29篇 |
1989年 | 23篇 |
1988年 | 27篇 |
1987年 | 19篇 |
1986年 | 27篇 |
1985年 | 18篇 |
1984年 | 15篇 |
1983年 | 23篇 |
1982年 | 14篇 |
1981年 | 24篇 |
1980年 | 18篇 |
1979年 | 20篇 |
1978年 | 13篇 |
1977年 | 14篇 |
1976年 | 19篇 |
1975年 | 16篇 |
1974年 | 11篇 |
1971年 | 6篇 |
1970年 | 8篇 |
排序方式: 共有1617条查询结果,搜索用时 15 毫秒
81.
Biologically Motivated Cancer Risk Models 总被引:3,自引:0,他引:3
A two-stage dose response model is proposed for use in cancer risk assessment. The model assumes that transformation probabilities and cellular dynamics are exposure- and time-dependent. 相似文献
82.
Charles N. Read 《Long Range Planning》1983,16(4):21-30
This paper argues that since the use of information is a fundamental part of all forms of activities, both corporate and private, throughout society the introduction of a new technology for using information inevitably has widespread effects. These effects are particularly far reaching in those service industries, such as banking, the very heart and essence of whose business is the handling of information.A review of the developments so far in the use of the new information technology in payment systems brings out the essential nature of its effects and shows the all-pervasive influence of the form and capability of the technology itself. It tries to illustrate where the benefits are derived and the nature of illusory gains and undesirable effects. An attempt is then made to derive an historical perspective.To try to anticipate future events, current trends in the technology and in the ways in which its use might change, are identified. The change in the technical means by which financial and other information-based services are delivered is seen to be salient feature of these developments and the important influence upon institutional relationships is discussed under the heading of the politics of the technology. Parallels in the introduction of other new technologies are drawn by way of illustration.The final part of the paper tries to develop a broader perspective and sketches out a longer scenario of the development of information technology indicating the major influence which this is likely to exert upon the development of society throughout the world. 相似文献
83.
84.
85.
86.
Several themes in Wirth's “Urbanism as a Way of Life” generate the prediction that alcohol use (versus nonuse) will be more widespread among residents of urban areas. Multiple regression analysis of data from two recent national polls (1966, 1968) reveals support for this prediction. With eight other key sociological variables simultaneously controlled, the greater the urbanism of a community (measured in terms of community size), the greater the proportion of alcohol users it contains. To make certain that this association is due to urban conditions (as opposed to merely the absence of rural forces which encourage abstinence), the effects of rural forces are reduced by omitting the most rural categories of the community size measure of urbanism, and the data are reexamined. The association still persists, basically because of the larger proportion of middle to upper status, white, and Protestant alcohol users in the more urban areas. 相似文献
87.
88.
89.
Children in foster care have lower health status than do their peers and limited access to health care. The Illinois Department of Children and Family Services developed HealthWorks, a separate primary care preferred provider system for children in foster care. This study compared claims data for children in HealthWorks with children not enrolled in HealthWorks and with children in Aid to Families with Dependent Children (AFDC) who had never entered foster care. Children enrolled in HealthWorks were more likely than were other children to receive all of the services except general inpatient hospitalizations. They had greater odds of receiving general exams and physicians' services and were more likely to visit the emergency room than children who were not enrolled. They were more likely to receive all of the measured services when compared with children receiving Medicaid through AFDC. 相似文献
90.
Public Law 94–142 requires that public school districts provide special service programs to handicapped and potentially handicapped children with diverse psychological, educational, and physical needs. In order for such programs to be developed and implemented in an appropriate and timely manner, procedures for assessment of pupil needs as well as assessment of school district resources that might address those needs, have been considered as important service delivery prerequisites. Toward that end, a Multidimensional Needs Assessment Framework, which has been developed by the authors and used in numerous public schools, is described in this paper. The Framework, which allows needs assessment to be seen as an integral part of the program planning process, requires that needs assessment and program planning activities occur in relation to three distinct, yet interrelated dimensions: Special Service Recipients, Special Service Resources, and Organizational Unit. Considerations necessary for design and implementation of needs assessment using the Framework are discussed, and suggestions for further development of the approach are noted. 相似文献