全文获取类型
收费全文 | 568篇 |
免费 | 1篇 |
专业分类
教育 | 450篇 |
科学研究 | 17篇 |
各国文化 | 17篇 |
体育 | 26篇 |
文化理论 | 4篇 |
信息传播 | 55篇 |
出版年
2020年 | 2篇 |
2019年 | 10篇 |
2018年 | 11篇 |
2017年 | 22篇 |
2016年 | 11篇 |
2015年 | 3篇 |
2014年 | 10篇 |
2013年 | 129篇 |
2012年 | 4篇 |
2011年 | 8篇 |
2010年 | 11篇 |
2009年 | 11篇 |
2008年 | 9篇 |
2007年 | 13篇 |
2006年 | 18篇 |
2005年 | 17篇 |
2004年 | 17篇 |
2003年 | 22篇 |
2002年 | 15篇 |
2001年 | 16篇 |
2000年 | 21篇 |
1999年 | 6篇 |
1998年 | 9篇 |
1997年 | 10篇 |
1996年 | 8篇 |
1995年 | 15篇 |
1994年 | 8篇 |
1993年 | 15篇 |
1992年 | 7篇 |
1991年 | 9篇 |
1989年 | 5篇 |
1988年 | 8篇 |
1987年 | 2篇 |
1986年 | 6篇 |
1985年 | 11篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 6篇 |
1980年 | 4篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 4篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1972年 | 6篇 |
1971年 | 5篇 |
1970年 | 4篇 |
1969年 | 7篇 |
1828年 | 1篇 |
排序方式: 共有569条查询结果,搜索用时 15 毫秒
541.
542.
543.
544.
545.
546.
547.
548.
549.
Philip L. Dawes Don Y. Lee Grahame R. Dowling 《The Journal of High Technology Management Research》1999,10(2):377
In this paper, we examine how individuals vary in their ability to control informal information during the purchasing process for an expensive complex technological product in the information technology area. As part of this research process, we use sociometric data from 41 firms to test a structural model of the effects that network heterogeneity and three organizational structure variables have on this type of information control. As hypothesized, increased network heterogeneity reduces an individual's ability to control informal information. Moreover, the structural variables of decentralization, formalization, and spatial differentiation are shown to affect informal information control in the predicted manner. Importantly, we also show that formalization and spatial differentiation affect network heterogeneity. Decentralization, however, was not found to be related to network heterogeneity. 相似文献
550.
Although previous research has established that high school sports participation may be associated with positive academic outcomes, the parameters of the relationship remain unclear. Using a longitudinal sample of nearly 600 Western New York adolescents, this study examined gender- and race-specific differences in the impact of two dimensions of adolescent athletic involvement ("jock" identity and athlete status) on changes in school grades and school misconduct over a two-year interval. Female and black adolescents who identified themselves as "jocks" reported lower grades than those who did not, whereas female athletes reported higher grades than female nonathletes. Jocks also reported significantly more misconduct (including skipping school, cutting classes, having someone from home called to the school for disciplinary purposes, and being sent to the principal's office) than nonjocks. Gender moderated the relationship between athlete status and school misconduct; athletic participation had a less salutary effect on misconduct for girls than for boys. 相似文献