全文获取类型
收费全文 | 618篇 |
免费 | 15篇 |
专业分类
各国政治 | 41篇 |
工人农民 | 93篇 |
世界政治 | 50篇 |
外交国际关系 | 13篇 |
法律 | 289篇 |
中国政治 | 9篇 |
政治理论 | 136篇 |
综合类 | 2篇 |
出版年
2023年 | 3篇 |
2022年 | 2篇 |
2020年 | 8篇 |
2019年 | 3篇 |
2018年 | 12篇 |
2017年 | 13篇 |
2016年 | 14篇 |
2015年 | 7篇 |
2014年 | 14篇 |
2013年 | 75篇 |
2012年 | 10篇 |
2011年 | 13篇 |
2010年 | 13篇 |
2009年 | 12篇 |
2008年 | 17篇 |
2007年 | 19篇 |
2006年 | 19篇 |
2005年 | 26篇 |
2004年 | 27篇 |
2003年 | 16篇 |
2002年 | 22篇 |
2001年 | 16篇 |
2000年 | 24篇 |
1999年 | 18篇 |
1998年 | 13篇 |
1997年 | 13篇 |
1996年 | 16篇 |
1995年 | 11篇 |
1994年 | 16篇 |
1993年 | 11篇 |
1992年 | 17篇 |
1991年 | 14篇 |
1990年 | 13篇 |
1989年 | 9篇 |
1988年 | 13篇 |
1987年 | 12篇 |
1986年 | 9篇 |
1985年 | 5篇 |
1984年 | 10篇 |
1983年 | 5篇 |
1982年 | 10篇 |
1981年 | 6篇 |
1980年 | 7篇 |
1979年 | 3篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1972年 | 2篇 |
排序方式: 共有633条查询结果,搜索用时 15 毫秒
51.
The decline in sports participation that begins in early adolescence has been well documented, and there has been considerable controversy regarding the reasons for this attrition. The present study addressed the attrition process by focusing on the subjective experience of sports as a function of grade, gender, and sport context. Following the procedures of the Experience Sampling Method, 401 5th–9th-grade boys and girls carried electronic pagers, similar to those worn by doctors, for one week, and filled out self-report forms on their activities and subjective states in response to signals received at random times. Older respondents spent less time in sports than their younger peers. This age difference was due primarily to a decline in informal sports participation, with less pronounced attrition from organized sports. Our findings suggest that the reasons for attrition from sport may be context specific. While informal sports were experienced more positively than gym class or organized sports, perceptions of skill were lowest during informal sports and declined with age. It seems youngsters stop participating in organized sports because these activities are less enjoyable to them, while attrition from informal sports is more performance based. Boys spent more time in sports than girls, and this difference was based primarily upon significant gender differences in informal sports participation. In spite of their differential rates of participation, boys and girls reported similar levels of affect, arousal, and skill during sports.This research was supported by NIMH grant number MH38324, Stress in Daily Life During Early Adolescence, awarded to Reed Larson, and was carried out while the first author was a Dissertation Fellow in the Department of Psychology at Loyola University of Chicago.Received Ph.D. in psychology from Loyola University of Chicago. Current research interests include athletic, involvement during early adolescence, body image, and adolescent mental health.Current research interests are stress and coping during early adolescence, and the adaptive use of leisure time.Received Ph.D. from the Committee on Human Development at the University of Chicago. Current research interests include pubertal development, the precursors of eating disorders, and the effects of maternal employment of young adolescents. 相似文献
52.
Nancy J. Bell Arthur W. Avery David Jenkins Jason Feld Carol J. Schoenrock 《Journal of youth and adolescence》1985,14(2):109-119
Data from a large sample of late adolescents was used to examine associations between family relationships (reported closeness to parents and siblings) and perceived social competence. Significant positive relationships were found between family bonds and the social competence measures, which included social self-esteem, instrumentality, expressiveness, shyness, and degree of satisfaction/ease in same- and opposite-sex peer relationships. There was no evidence of differential effects of sibling versus parent relationships upon adolescent social competence.This project was supported by NIMH Grant 5 R01 MH34570.Received Ph.D. from Northwestern University. 相似文献
53.
54.
Carol A. Cassel 《Political Behavior》1987,9(3):246-256
The nonpartisan municipal ballot is one of several turn-of-the-century reforms intended to weaken political parties. Through its effects on individuals' political contexts and voting experiences, it might have contributed to the twentieth-century decline in public support for political parties. This paper tests this hypothesis with items available in the 1980 CPS presidential election survey augmented with a ballot form variable. There are no significant differences in measures of party support among residents of partisan and nonpartisan communities, and thus no measurable evidence that nonpartisan elections discouraged the public from supporting political parties.This is a revised version of a paper delivered at the XIII World Congress of the International Political Science Association, Paris, July 1985. 相似文献
55.
Carol Weisbrod 《Society》1988,25(2):62-65
She is author of The Boundaries of Utopia. 相似文献
56.
57.
Puberty has been related to the onset of a variety of weight concerns and eating problems among middle school girls, including body dissatisfaction, dieting, and eating disorders. At least two models can be used to explain these relationships. The first emphasizes the timing of puberty, arguing that girls who face early puberty are particularly stressed because of the off-time nature of the event. The second focuses on synchronous events. For girls more than boys, puberty is likely to coincide with the change from elementary to middle school and/or beginning to date. Such synchronous events may create greater stress for girls. Seventy-nine girls were tested during the spring of their sixth- and eighth-grade years. Pubertal and dating status, body dissatisfaction, weight management, and eating disordered attitudes (using the Children's EAT:ChEAT) were assessed. The simple timing model (early vs. on time vs. late) was not supported. The simple synchronous model received some support in that girls with synchronous onset of menstruation and dating had higher ChEAT scores as well as greater body dissatisfaction. However, the data indicated that girls for whom puberty was early and coincidental with dating might be at unusual risk. These girls showed the highest levels of body dissatisfaction and the highest ChEAT scores.Ph.D. from Temple University. Research interest is in developmental psychology.Ph.D. from the University of California at Santa BarbaraThese authors have a joint research program in the developmental psychopathology of eating problems.The first wave of data for this report was collected as part of her undergraduate honors thesis.Earlier versions of these data were presented at the 1991 meeting of the Society for Research in Child Development, Seattle, Washington and the 1992 Conference on Human Development, Atlanta, Georgia. 相似文献
58.
Carol H. Weiss 《Journal of policy analysis and management》1989,8(3):411-431
Structural arrangements in the Congress work against the use of analysis, but newer developments, such as growth in staff professionalism and activity of the congressional support agencies, tend to promote it. Interviews with committee staff show that they are aware of much analysis, use it primarily for political advantage, but that they also take it seriously as warning of problems and as guidance on particular issues. Staff value information more when they know and trust its source and understand its political motivations. The use of analysis to reconceptualize problems is not much in evidence, perhaps because such “enlightenment” takes place elsewhere and filters into the Congress through informal channels. 相似文献
59.
60.
Friedman SH Hrouda DR Holden CE Noffsinger SG Resnick PJ 《Journal of forensic sciences》2005,50(6):1466-1471
Forensic hospital records of 39 severely mentally ill mothers adjudicated Not Guilty by Reason of Insanity for filicide (child murder by parents) were analyzed to describe characteristics preceding this tragedy and to suggest prevention strategies. Almost three-quarters of the mothers (72%) had previous mental health treatment. Over two thirds (69%) of the mothers were experiencing auditory hallucinations, most frequently command hallucinations, and half (49%) were depressed at the time of the offense. Over one third (38%) of the filicides occurred during pregnancy or the postpartum period, and many had a history of postpartum psychosis. Almost three-quarters (72%) of the mothers had experienced considerable developmental stressors, such as death of their own mother or incest. Maternal motives for filicide were predominantly "altruistic" (meaning murder out of love) or "acutely psychotic" (occurring in the throes of psychosis, without rational motive). Psychiatrists should perform careful risk assessments for filicide in mothers with mental illnesses. 相似文献