全文获取类型
收费全文 | 760篇 |
免费 | 32篇 |
专业分类
管理学 | 127篇 |
民族学 | 3篇 |
人口学 | 62篇 |
丛书文集 | 2篇 |
理论方法论 | 94篇 |
综合类 | 4篇 |
社会学 | 428篇 |
统计学 | 72篇 |
出版年
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 3篇 |
2020年 | 17篇 |
2019年 | 21篇 |
2018年 | 16篇 |
2017年 | 38篇 |
2016年 | 30篇 |
2015年 | 23篇 |
2014年 | 35篇 |
2013年 | 133篇 |
2012年 | 31篇 |
2011年 | 39篇 |
2010年 | 21篇 |
2009年 | 21篇 |
2008年 | 21篇 |
2007年 | 22篇 |
2006年 | 14篇 |
2005年 | 18篇 |
2004年 | 18篇 |
2003年 | 15篇 |
2002年 | 26篇 |
2001年 | 16篇 |
2000年 | 11篇 |
1999年 | 17篇 |
1998年 | 9篇 |
1997年 | 10篇 |
1996年 | 7篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 11篇 |
1992年 | 16篇 |
1991年 | 10篇 |
1990年 | 13篇 |
1989年 | 5篇 |
1988年 | 5篇 |
1987年 | 7篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 5篇 |
1983年 | 8篇 |
1982年 | 5篇 |
1981年 | 5篇 |
1980年 | 8篇 |
1979年 | 3篇 |
1978年 | 5篇 |
1977年 | 6篇 |
1976年 | 6篇 |
1971年 | 2篇 |
1969年 | 2篇 |
排序方式: 共有792条查询结果,搜索用时 328 毫秒
1.
2.
Martin D. Ruck Michele Peterson‐Badali David M. Day 《Journal of research on adolescence》2002,12(3):373-398
Adolescents' and mothers' understanding of children's self‐determination and nurturance rights was examined in the context of the home. In individual interviews, 141 sixth, eighth, and tenth graders and their mothers responded to hypothetical vignettes in which a child story character wished to exercise a right that conflicted with parental practices. For each vignette, participants were asked to judge whether the story character should have the right in question and to provide a justification for their decision. Generally, eighth and tenth graders were more likely than their mothers to endorse requests for self‐determination and less likely than their mothers to support requests for nurturance. Mothers of tenth graders were more likely to support requests for self‐determination and less likely to favor adolescents' request for nurturance in the home than were mothers of sixth and eighth graders. In terms of reasoning, adolescents and mothers were more likely to consider the individuals' rights when discussing self‐determination situations, whereas nurturance situations elicited responses pertaining to participants' understanding of familial roles and relationships. Furthermore, mothers' reasoning about childrenà s rights reflected sensitivity to the developmental level of their children. The findings are discussed in terms of previous research on the development of children's understanding of rights and adolescent autonomy. 相似文献
3.
4.
5.
Valuing environmental resources: A constructive approach 总被引:3,自引:1,他引:2
6.
Rainfall interception by Santa Monica's municipal urban forest 总被引:4,自引:2,他引:2
Effects of urban forests on rainfall interception and runoff reduction have been conceptualized, but not well quantified. In this study rainfall interception by street and park trees in Santa Monica, California is simulated. A mass and energy balance rainfall interception model is used to simulate rainfall interception processes (e.g., gross precipitation, free throughfall, canopy drip, stemflow, and evaporation). Annual rainfall interception by the 29,299 street and park trees was 193,168 m3 (6.6 m3/tree), or 1.6% of total precipitation. The annual value of avoided stormwater treatment and flood control costs associated with reduced runoff was $110,890 ($3.60/tree). Interception rate varied with tree species and sizes. Rainfall interception ranged from 15.3% (0.8 m3/tree) for a small Jacaranda mimosifolia (3.5 cm diameter at breast height) to 66.5% (20.8 m3/tree) for a mature Tristania conferta (38.1 cm). In a 25-year storm, interception by all street and park trees was 12,139.5 m3 (0.4%), each tree yielding $0.60 (0.4 m3/tree) in avoided flood control costs. Rainfall interception varied seasonally, averaging 14.8% during a 21.7 mm winter storm and 79.5% during a 20.3 mm summer storm for a large, deciduous Platanus acerifolia tree. Effects of differences in temporal precipitation patterns, tree population traits, and pruning practices on interception in Santa Monica, Modesto, and Sacramento, California are described. 相似文献
7.
8.
9.
10.