全文获取类型
收费全文 | 506篇 |
免费 | 31篇 |
专业分类
537篇 |
出版年
2023年 | 5篇 |
2021年 | 5篇 |
2020年 | 11篇 |
2019年 | 5篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 18篇 |
2015年 | 13篇 |
2014年 | 9篇 |
2013年 | 46篇 |
2012年 | 17篇 |
2011年 | 23篇 |
2010年 | 13篇 |
2009年 | 14篇 |
2008年 | 16篇 |
2007年 | 21篇 |
2006年 | 25篇 |
2005年 | 16篇 |
2004年 | 7篇 |
2003年 | 16篇 |
2002年 | 10篇 |
2001年 | 11篇 |
2000年 | 18篇 |
1999年 | 8篇 |
1998年 | 12篇 |
1997年 | 5篇 |
1996年 | 10篇 |
1995年 | 7篇 |
1994年 | 5篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 8篇 |
1989年 | 8篇 |
1988年 | 9篇 |
1987年 | 6篇 |
1986年 | 8篇 |
1985年 | 10篇 |
1984年 | 13篇 |
1982年 | 6篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1976年 | 4篇 |
1975年 | 7篇 |
1972年 | 7篇 |
1971年 | 6篇 |
1969年 | 3篇 |
1968年 | 4篇 |
1967年 | 3篇 |
1966年 | 3篇 |
排序方式: 共有537条查询结果,搜索用时 15 毫秒
521.
522.
Public Argument and Civil Society: The Cold War Legacy as a Barrier to Deliberative Politics 总被引:1,自引:0,他引:1
Thomas Kane 《Argumentation》2001,15(2):107-115
523.
Steven J. Harrison 《Ecological Psychology》2020,32(1):58-78
AbstractBiological odometry refers to the capacity for perceptually measuring distances traveled during locomotion. In the case of haptic odometry, information about distance traversed is generated from the movements of the legs, with coordinated leg motions (i.e., gait patterns) producing patterns of tissue deformation detectable by the haptic perceptual system. The gait symmetry theory of haptic odometry classifies gaits based upon the symmetry of muscle activation patterns. This classification identifies candidate higher-order variables of haptic odometry and provides a promising basis for understanding the associated patterns of tissue deformation detected by the haptic perceptual system. The theory successfully predicts biases (i.e., underestimations/overestimations) resulting from the manipulation of the gait patterns used in the outbound and return phases of homing tasks. We test gait symmetry theory by considering a previously unexamined key prediction. Two-legged hopping and walking have the same symmetry group classification, therefore, a homing task completed using any combination of two-legged hopping and walking as the outbound/return gaits should produce no systematic biases. Contrary to this prediction we observed systematic biases. We discuss the possibilities for modifying gait symmetry theory to account for our findings, and we present a new alternative theory based upon spatial reference frames. 相似文献
524.
The Sunny Days, Healthy Ways curriculum, which has been effective in previous trials, was disseminated to public elementary schools (n=2,030) and state-licensed child-care facilities (n=3,755) in 4 states. Two Web sites were created, varying in the amount and type of information. Mailings referred principals and directors to the sites. Overall 117 unique users made 172 visits to the sites. More repeat visits were made to the enhanced than to the basic site (p=.04). In a survey, 20.0% of principals and directors recalled receiving the mailings and 80.9% of these read them. Web-based strategies were weak, but the low response rate may be typical for such marketing. They will require supplementation by more personal approaches. 相似文献
525.
526.
527.
528.
529.
530.
Black women's influence upon and reaction to social and economic change in the dawn of the twenty-first century are examined. Selected trends in labor force participation and family organization are discussed in relation to possible consequences for black women's role in the family and the socialization of black females. The importance of religion in black women's future is discussed, and it is suggested that they will have an increasing role as religious leaders and concomitant opportunities for organizing around women's issues. Finally, black women's renewed interest in Africa is discussed and implications for personal and community enhancement are examined. 相似文献