全文获取类型
收费全文 | 1468篇 |
免费 | 75篇 |
专业分类
各国政治 | 105篇 |
工人农民 | 80篇 |
世界政治 | 175篇 |
外交国际关系 | 94篇 |
法律 | 726篇 |
中国政治 | 10篇 |
政治理论 | 341篇 |
综合类 | 12篇 |
出版年
2023年 | 15篇 |
2022年 | 7篇 |
2021年 | 15篇 |
2020年 | 55篇 |
2019年 | 50篇 |
2018年 | 49篇 |
2017年 | 66篇 |
2016年 | 61篇 |
2015年 | 63篇 |
2014年 | 60篇 |
2013年 | 260篇 |
2012年 | 64篇 |
2011年 | 46篇 |
2010年 | 45篇 |
2009年 | 37篇 |
2008年 | 52篇 |
2007年 | 48篇 |
2006年 | 46篇 |
2005年 | 51篇 |
2004年 | 50篇 |
2003年 | 41篇 |
2002年 | 31篇 |
2001年 | 34篇 |
2000年 | 50篇 |
1999年 | 23篇 |
1998年 | 25篇 |
1997年 | 20篇 |
1996年 | 14篇 |
1995年 | 13篇 |
1994年 | 13篇 |
1993年 | 13篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 10篇 |
1989年 | 14篇 |
1988年 | 11篇 |
1987年 | 10篇 |
1986年 | 7篇 |
1985年 | 4篇 |
1984年 | 9篇 |
1983年 | 8篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1969年 | 2篇 |
1965年 | 2篇 |
排序方式: 共有1543条查询结果,搜索用时 15 毫秒
101.
102.
In a naturalistic study of age segregation during adolescence, 403 adolescents making up 153 separate groups were observed in three high schools and seven out-of-school settings. Age segregation was extensive, especially in school, among older adolescents in same-sex groups of friends. More mixed-age association was observed out of school among younger adolescents who were in mixed-sex groups containing relatives. Adolescents were most often observed with friends who were other adolescents, next with adults, and least frequently observed with children. Parents, particularly fathers, were rarely present. It was suggested that age segregation during adolescence is the result of a lack of contact with relatives.Received his Ph.D. from Michigan State University in 1974. Major research interest is parent-adolescent relations.Major research interests are adolescence and clinical psychology. 相似文献
103.
Why do people vote? An experiment in rationality 总被引:1,自引:0,他引:1
The study presents the findings of an experiment conducted during the 1993 Canadian fedeal election campaign. Students in two universities were exposed to a ten-minute presentation about the rational model of voting and the ‘paradox’ that so many people vote when it is apparently irrational on a cost-benefit basis. Our data indicate that exposure to the presentation decreased turnout in the election by seven percentage points. This result contributes to the debate abut the effect of rational-choice models on real political behavior. More important, the experimental panel data permit the presentation's effect to be decomposed, and this helps explain why people do vote. In this study, turnout was reduced mainly because the presentation diminished the respondents' sense of duty, an effect that was indirect, because there was no reference in the presentation to such motives. Framing the voting act in rational-choice terms induced some students to reconsider whether they should feel obliged to vote. 相似文献
104.
Darling Nancy Dowdy Bonnie B. Van Horn M. Lee Caldwell Linda L. 《Journal of youth and adolescence》1999,28(4):461-480
This study examines the association of self-perceptions with sixth to eighth graders' exposure to mixed-sex and dating contexts. It contrasts two hypotheses: the stress hypothesis, which suggests that the transition to romantic relationships will be associated with declines in self-esteem, especially for girls, and the leisure hypothesis, which suggests that movement into a desired role in an emotionally positive social context will be associated with positive emotions and higher self-esteem. Results indicate that adolescents experience mixed-sex settings positively, and that comfort with the other sex (for girls) and more time spent with the other sex (for boys) are predictive of more positive self-perceptions. Activity diary data suggest that these differences are due to differences in the emotional climate of same- and mixed-sex settings, rather than to the activities adolescents engage in with same- and mixed-sex groups. Dating boys who are less interested in dating experience lower self-esteem. Results are discussed in light of the transitional nature of mixed-sex relationships in early adolescence and the preparatory role played by same-sex friendships. 相似文献
105.
106.
107.
José Bélanger Alain Gosselin 《Canadian public administration. Administration publique du Canada》2010,53(1):47-65
Abstract: This study examines the use of influence tactics by Human Resources managers with the members of the Quebec public-sector management team. The results indicate that they use a large number of influence tactics, that they use more frequently “soft” tactics than “hard” ones or “neither soft nor hard” ones, and they choose their tactics based on a cost-benefit analysis. Furthermore, the analyses reveal that respondents whose feelings of self-efficacy are high will not attempt to influence or use “soft” tactics any more frequently than respondents with low feelings of self-efficacy. Finally, the results indicate that our respondents exercise influence effectively. 相似文献
108.
109.
110.
In the analysis of human skeletal or otherwise unidentifiable remains the assessment of sex is an initial vital element when rendering a biological profile. As such other aspects of the biological profile are sex-specific (e.g. stature and age) and cannot be successfully determined without this preliminary assessment. In addition, the estimation of stature is an essential parameter of the biological profile, which is often used to confirm or exclude presumptive identifications.The purpose of this study is to present newly developed local identification criteria for the estimation of sex from the postcrania and stature for Chileans. Linear discriminant functions were derived for the humerus and femur. Sexing accuracies of 87%, 86%, and 82% were achieved. Furthermore, new univariate predictive stature equations are presented using a Bayesian approach for the humerus, femur and tibia. 相似文献