全文获取类型
收费全文 | 12581篇 |
免费 | 195篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1716篇 |
民族学 | 48篇 |
人才学 | 6篇 |
人口学 | 1243篇 |
丛书文集 | 48篇 |
理论方法论 | 1114篇 |
综合类 | 149篇 |
社会学 | 5912篇 |
统计学 | 2541篇 |
出版年
2023年 | 69篇 |
2021年 | 68篇 |
2020年 | 165篇 |
2019年 | 238篇 |
2018年 | 272篇 |
2017年 | 415篇 |
2016年 | 287篇 |
2015年 | 199篇 |
2014年 | 249篇 |
2013年 | 2174篇 |
2012年 | 414篇 |
2011年 | 337篇 |
2010年 | 251篇 |
2009年 | 235篇 |
2008年 | 257篇 |
2007年 | 266篇 |
2006年 | 285篇 |
2005年 | 266篇 |
2004年 | 262篇 |
2003年 | 216篇 |
2002年 | 262篇 |
2001年 | 287篇 |
2000年 | 265篇 |
1999年 | 290篇 |
1998年 | 231篇 |
1997年 | 227篇 |
1996年 | 200篇 |
1995年 | 183篇 |
1994年 | 193篇 |
1993年 | 183篇 |
1992年 | 201篇 |
1991年 | 201篇 |
1990年 | 206篇 |
1989年 | 218篇 |
1988年 | 175篇 |
1987年 | 182篇 |
1986年 | 162篇 |
1985年 | 194篇 |
1984年 | 162篇 |
1983年 | 170篇 |
1982年 | 141篇 |
1981年 | 141篇 |
1980年 | 128篇 |
1979年 | 151篇 |
1978年 | 141篇 |
1977年 | 103篇 |
1976年 | 123篇 |
1975年 | 113篇 |
1974年 | 90篇 |
1973年 | 82篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Sources of drug information among adolescent students 总被引:1,自引:0,他引:1
E Mirzaee P M Kingery B E Pruitt G Heuberger R S Hurley 《Journal of drug education》1991,21(2):95-106
A sample of 1023 eighth and tenth grade students in small to medium-sized central Texas school districts was assessed to determine the amount of information they receive from ten sources about six categories of drugs. The amount of information males reported receiving about each drug category was significantly greater than what females reported, and the amount of information that eighth graders reported receiving about each drug category was significantly greater than what tenth graders reported. Television was the primary source of drug information for all categories of drugs except inhalants, for which friends and television were equally important sources. Parents and printed media (magazines or newspapers) were of secondary importance, followed by friends and teachers. Adolescents were less likely to receive drug-related information from experience, siblings, church, doctors, and police. The reliance on the mass media for drug information in smaller school districts is a pattern which has been previously observed in larger urban districts. This consistency suggests that mass media approaches to drug education are likely to be as effective in rural areas and smaller towns as they are among urban adolescents. Implications for television programming are discussed. 相似文献
42.
43.
44.
45.
Allan F. Abrahamse Peter A. Morrison Nancy Minter Bolton 《Population research and policy review》1994,13(4):383-398
Surname analysis is a potentially useful technique for identifying members of particular racial, ethnic, or language communities within a population. We review the existing state of the art for identifying persons of Hispanic or Asian origin, based on surnames distinctive of each group. We describe the logic of surname analysis, profile several available surname dictionaries, and illustrate their applications in local redistricting. Results of our ongoing validation studies suggest promising future directions for improving accuracy and broadening applications.This article is based on a paper presented at the annual Population Association of America meetings at Cincinnati, 1 April 1993. 相似文献
46.
47.
Public and nonprofit organizations need to make strategic choices about where to invest their resources. They also need to expose hidden managerial assumptions and lack of adequate knowledge that prevent the attainment of consensus in strategic decision making. The approach we developed and tested in the field used a dynamic, three‐dimensional model that tracks individual programs in an organization's portfolio on their contribution to mission, money, and merit. The first dimension measures whether the organization is doing the right things; the second, whether it is doing things right financially; and the third, whether it doing things right in terms of quality. Senior managers provide their own evaluations of the organization's programs. Both the consensus view and the variation in individual assessments contribute to an improved managerial understanding of the organization's current situation and to richer discussions in strategic decision making. In field tests, this visual model proved to be a useful and powerful tool for illuminating underlying assumptions and variations in knowledge among managers facing the complex, multidimensional tradeoffs needed in strategic decision making. 相似文献
48.
49.
50.