全文获取类型
收费全文 | 21255篇 |
免费 | 719篇 |
国内免费 | 5篇 |
专业分类
各国政治 | 1022篇 |
工人农民 | 874篇 |
世界政治 | 1617篇 |
外交国际关系 | 946篇 |
法律 | 12636篇 |
中国共产党 | 6篇 |
中国政治 | 197篇 |
政治理论 | 4456篇 |
综合类 | 225篇 |
出版年
2021年 | 122篇 |
2020年 | 295篇 |
2019年 | 365篇 |
2018年 | 509篇 |
2017年 | 567篇 |
2016年 | 620篇 |
2015年 | 417篇 |
2014年 | 443篇 |
2013年 | 2299篇 |
2012年 | 608篇 |
2011年 | 633篇 |
2010年 | 527篇 |
2009年 | 553篇 |
2008年 | 679篇 |
2007年 | 747篇 |
2006年 | 708篇 |
2005年 | 641篇 |
2004年 | 636篇 |
2003年 | 632篇 |
2002年 | 566篇 |
2001年 | 762篇 |
2000年 | 630篇 |
1999年 | 575篇 |
1998年 | 319篇 |
1997年 | 246篇 |
1996年 | 264篇 |
1995年 | 225篇 |
1994年 | 263篇 |
1993年 | 261篇 |
1992年 | 382篇 |
1991年 | 411篇 |
1990年 | 394篇 |
1989年 | 327篇 |
1988年 | 374篇 |
1987年 | 306篇 |
1986年 | 361篇 |
1985年 | 314篇 |
1984年 | 262篇 |
1983年 | 247篇 |
1982年 | 202篇 |
1981年 | 218篇 |
1980年 | 142篇 |
1979年 | 186篇 |
1978年 | 140篇 |
1977年 | 120篇 |
1976年 | 109篇 |
1975年 | 135篇 |
1974年 | 158篇 |
1973年 | 111篇 |
1972年 | 107篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
This study was undertaken to evaluate the part that nascent skeptical doubt plays in shaping the course of adolescent social-cognitive development. It is argued that the intellectual changes that accompany the acquisition of formal operational competence set in motion a series of developments that seriously undermine the typical adolescent's previous sense of epistemic certainty. An epistemic model is proposed, leading to the hypothesis that, in response to such doubts, young persons adopt one of several contrasting interpretive strategies, each of which dictates much about their subsequent solutions to the problems of identity formation and commitment. To evaluate these hypotheses, 96 high school aged young people were classified as being either concrete or formal operational. Those subjects who were clearly classifiable (N=70) were administered Adams' Objective Measure of Ego identity Status and the Epistemic Doubt Interview, which permits identification of realistic, defendedly realistic, dogmatic/skeptical, and rational epistemic stances. A relationship between cognitive and epistemic development was found. Only formal operational subjects appreciated the generic nature of the doubt undermining their epistemic certainty. Predictions regarding the anticipated relation between epistemic stance and ego identity status were supported, revealing that only postrealist epistemic stances were routinely associated with membership in the moratorium or achieved identity statuses. The results are taken as strong support for the claim that epistemic doubt plays a central role in shaping the course of adolescent social-cognitive development.This research was partially supported by a Social Sciences and Humanities Research Council Doctoral Fellowship awarded to the first author.Obtained Ph.D. in developmental psychology from the University of British Columbia. Research interests are focused upon the areas of overlap among cognitive, epistemic, and moral development, and the identity formation process through the adolescent years.Obtained Ph.D. in psychology from The University of California at Berkeley. His research interests include epistemic and social-cognitive development in children and adolescents, and young children's developing theories of mind. 相似文献
992.
The influence of self-esteem on the use of status considerations as determinants of interpersonal acceptance was studied in a sample of 722 Israeli students from integrated junior high schools. The students completed a self-esteem questionnaire as well as the Interpersonal Relation Assessment Technique, a measure assessing willingness to engage in activities of increasing intimacy with classmates. Data analysis indicated a general preference for targets of higher educational level and high-status ethnic origin. These categorical preferences were more pronounced among high rather than low self-esteem students, irregardless of their own educational standing or ethnic origin. The findings were consistent with the thrust of cost-benefit analyses suggested by social exchange theories, in which self-esteem is viewed as one's globalized perception of social worth. The results suggest that individuals with high self-esteem may be more likely to see themselves as equals to higher status others and seek out their company than would their low self-esteem counterparts. Alternately, those with high self-esteem may be more motivated by social ambition and less by fear of rejection.Received doctorate from UCLA. Studies issues related to self-esteem and social relationships, as well as stress and coping in childhood and adolescence.Received doctorate from the University of Texas at Austin. Research deals with interethnic relations, religious education, and post traumatic stress disorders. 相似文献
993.
Mindy A. Herman-Stabl Mark Stemmler Anne C. Petersen 《Journal of youth and adolescence》1995,24(6):649-665
We conducted a short-term longitudinal study examining the structure of coping behavior and the relationship between coping style and depression during adolescence. The sample consisted of 603 adolescents in Grades 6–11 who were surveyed in the fall of 1989 and again in the fall of 1990. A two-dimensional model of coping was found using confirmatory factor analysis with the factors being approach and avoidant coping. Four cross-sectional and seven longitudinal coping groups were formed to explore group differences in depression. Approach copers reported the fewest symptoms of depression, while avoidant copers reported the most. Subjects who changed over time from approach to avoidant coping evidenced a significant increase in depressive symptoms, whereas subjects who switched from avoidant to approach coping displayed a significant decrease in depression over a one-year period. These findings imply that adolescents who are able to elicit social support, engage in problem solving, and cognitively restructure events within a positive light are more likely to successfully negotiate the challenges of adolescence.This research was supported by a grant from the William T. Grant Foundation (8912789), Anne C. Petersen, Principal Investigator. The writing of this article was supported by the National Institute of Mental Health Research Training Grant 5 T32MH18387-06 in Child Mental Health/Primary Prevention.Received Ph.D. in Human Development and Family Studies from Pennsylvania State University. Research interests include adolescent mental health and community research.Received his Ph.D. in Human Development and Family Studies from Pennsylvania State University. Research interests include adolescent mental health and research methodology.Received degree from the University of Chicago. Research interests are in biopsychosocial development in adolescence, with a focus on sex differences in mental health. 相似文献
994.
Maria Donald Jayne Lucke Michael Dunne Beverley Raphael 《Journal of youth and adolescence》1995,24(4):453-464
The differences between male and female adolescents' emotional reactions to their most recent occasion of sexual intercourse were examined. The sample included 932 sexually active Australian secondary school students who completed a self-report questionnaire concerning their sexual behavior. The majority of young people reported that they felt happy or good following their most recent occasion of sex. Females were more likely than males to report negative emotions such as feeling bad and used, but there was no difference between the percentage of males and the percentage of females who reported feeling guilty. Girls were more likely to feel bad, used, or guilty last time if they were drunk/high or had sex with someone who was not a steady partner. Boys who had sex with someone other than a steady partner last time were more likely to feel guilty. Peer and parental influences were also associated with feelings of guilt. Girls who were more confident that they could talk to one of their parents/guardians about sex, and boys who believed that most of their peers were sexually active, were less likely to have felt guilty.Received B.A. (Hons) from University of Queensland. Research interests include adolescents mental and sexual health.Received B.A.(Hons) from University of Queensland. Interested in the areas of sex roles and sexual behavior among adolescents.Received Ph.D. from Murdoch University. Research interests include population studies of sexual behavior and mental health.Received M.B.B.S., M.D. from University of Sydney. Research interests include adolescent health, psychological response in disasters, coping with grief and loss and living with HIV/AIDS. 相似文献
995.
Mark D. Weist Abby H. Freedman David A. Paskewitz Eric J. Proescher Lois T. Flaherty 《Journal of youth and adolescence》1995,24(6):705-721
Explored the influence of life stress as mediated or moderated by locus of control, family environment, social support, and coping style on psychological adjustment and school performance in 164 ninth graders from Baltimore. Gender differences in findings were shown. For boys, family cohesion was the only variable found to protect against the effects of stress. Family cohesion did not serve protective functions for girls, and along with overall social support, was associated with increased vulnerability to school problems. The report of problem-focused coping strategies exerted a number of protective functions for girls only. External locus of control was found to increase boys' and girls' vulnerability to the effects of life stress. Empirical development of interventions to improve the psychosocial adjustment of inner-city adolescents is discussed.Received Ph.D. from Virginia Polytechnic Institute and State University in 1991. Research interests include evaluation of school mental health services, empirical development of interventions for children, and the impact of violence on urban youth.Received B.A. from Cornell University. Interests include stress and coping in children, identification of resilience factors, and evaluation of child mental health systems of care.Received Ph.D. from the University of Oklahoma in 1967. Research interests include psychophysiology, sleep disorders, and biofeedback and instrumentation.Received B.A. from Loyola College. Interested in applied work with adolescents and adults.Received M.D. from Duke University in 1968. Research interests include training in child and adolescent psychiatry, adolescent psychopathology, and the development of school mental health programs. 相似文献
996.
Thomas M. Fraker Alberto P. Martini James C. Ohls Michael Ponza 《Journal of policy analysis and management》1995,14(3):372-392
The recent report produced by Vice President Gore's committee on government efficiency highlights the importance of streamlining government operations. But often there are trade-offs between administrative streamlining and accomplishing substantive program objectives. This article examines these tradeoffs in the context of the Food Stamp Program, an important component of the United States' safety net for providing low-income assistance. We estimate impacts on both administrative costs and substantive outcomes (participant food expenditures) resulting from issuing program benefits in the form of checks rather than the usual food coupons. The findings, which are based on experimental tests of the cashout approach in parts of Alabama and California, suggest that significant cost savings can be attained through cashout but that these savings may be achieved at the cost of weakening the program's ability to achieve its substantive objective of encouraging food use. 相似文献
997.
998.
Federalism, as a concept and as a reality, received assistancefrom a variety of sources during 19941995. Opinion pollsrevealed a public strongly supportive of shifts in the balanceof power between federal and state governments. The new Republican-controlledCongress, bent on devolving authority to the states, busieditself with an ambitious legislative agenda. The DemocraticPresident pursued his principles of federalism and intergovernmentalrelations by supporting the unfunded mandates bill and by increasingthe use of the administrative waiver. The U.S. Supreme Courtbolstered federalism with its rulings in cases such as Lopez,a state challenge to the federal Gun-Free School Zones Act.The new mood in Washington, D.C. was complemented by state leadersanxious to take on the challenges of a rebalanced federal system 相似文献
999.
Abstract. Roubini and Sachs provided the first systematic test of the idea that political structure the size, composition, diversity, and/or stability of a governing cabinet - is related to budget deficits. In this paper, we take issue with several of Roubini and Sachs' choices concerning data and operationalization, and argue that their approach cannot offer clear conclusions about the relationship between national political structure and budget deficits. We test the 'strength of government' hypothesis using central government finance data on 16 countries, 1959–1990. We measure deficits in a way that maximizes comparability across countries but avoids the potential problems of standardizing by GDP. We examine carefully the definition and measurement of 'strength of government', in light of recent theoretical and empirical work in comparative politics. We perform pooled time-series regression analysis of deficit change in 16 OECD countries for the period 1959–1990. We argue that while structural differences between governments may have little impact on deficits during good economic times, they may become especially noticeable and influential during periods when governments struggle to cope with severe economic problems. 相似文献
1000.