首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2347篇
  免费   114篇
各国政治   155篇
工人农民   114篇
世界政治   236篇
外交国际关系   143篇
法律   1123篇
中国政治   14篇
政治理论   655篇
综合类   21篇
  2023年   12篇
  2022年   5篇
  2021年   21篇
  2020年   48篇
  2019年   61篇
  2018年   73篇
  2017年   96篇
  2016年   77篇
  2015年   60篇
  2014年   86篇
  2013年   362篇
  2012年   76篇
  2011年   103篇
  2010年   63篇
  2009年   82篇
  2008年   69篇
  2007年   89篇
  2006年   89篇
  2005年   92篇
  2004年   84篇
  2003年   93篇
  2002年   87篇
  2001年   48篇
  2000年   50篇
  1999年   42篇
  1998年   42篇
  1997年   41篇
  1996年   30篇
  1995年   38篇
  1994年   35篇
  1993年   25篇
  1992年   24篇
  1991年   21篇
  1990年   25篇
  1989年   16篇
  1988年   27篇
  1987年   19篇
  1986年   11篇
  1985年   18篇
  1984年   17篇
  1983年   14篇
  1982年   9篇
  1981年   9篇
  1980年   12篇
  1979年   9篇
  1978年   8篇
  1976年   10篇
  1975年   5篇
  1974年   6篇
  1970年   4篇
排序方式: 共有2461条查询结果,搜索用时 125 毫秒
131.
132.
133.
The interrelationships of depression and suicide with adolescent drug use, delinquency, eating disorders, and the risk factors for these different problems were investigated among 597 9th and 11th graders in an urban high school. There is a strong association of drug use with suicidal ideation among girls, and a stronger relationship with attempts among girls and boys. Suicidal youths are ill-adjusted and display a lack of attachment and commitment to family and school. Causal models indicate that poor interpersonal interactions with parents, absence of peer interactions, and life events lead to depression, which in turn leads to suicidal ideation. Depressive symptoms are the strongest predictors of suicidal ideation. Among females, depression predicts drug involvement, and in turn, drug use increases suicidal ideation. Drug use is only one class of problem behaviors that constitutes a risk factor for suicidal behavior in adolescence. Delinquency and eating disorders also have direct effects on suicidal ideation beyond those of depressive affect. As for drug involvement, these problem behaviors are more predictive of suicidal behavior among girls than boys. Similarity and specificity of the predictors for problem behaviors within and between the sexes are discussed. Although young women use drugs to handle feelings of depression, drug use appears ineffective in the long run in relieving these depressive feelings. Understanding the dynamics of suicidal ideation in adolescence has important public health implications, since ideation is a strong predictor of attempts, especially among females.Revised version of a presentation at the Workshop on Adolescent Depression, Princeton, NJ, June 3, 1987.Work on this research has been partially supported by Research Grants DA00064, DA01097, DA03196, and DA02867, and by Research Scientist Award DA00081 from the National Institute on Drug Abuse; and awards from the John D. and Catherine MacArthur Foundation and the Research Foundation for Mental Hygiene, New York State Psychiatric Institute. Partial support for computer costs was provided by Mental Health Clinical Research Center Grant MH30906-07 from NIMH to the New York State Psychiatric Institute.Received Ph.D. in Sociology from Columbia University. Research interests include adolescent psychosocial development, epidemiology and risk factors for drug use, and interpersonal networks.Work on this research was carried out while a Research Associate at the School of Public Health, Columbia University. Received Ph.D. in Sociology from Columbia University. Research interests include personal networks and social support systems in chronic illness, societal factors in mental health, psychosocial consequences of drug use and abuse, panel mortality, and survey methodology.Received M.P.H. from Columbia University. Research interests include reliability and child psychiatry.  相似文献   
134.
135.
Until recently, the literature on public administration has been almost exclusively based on the concerns and features of medium-sized and large states. Few studies have addressed the special features of public administration in small states. This paper helps to redress this situation by focusing on Ministries of Education in small states. It is mainly based on a Commonwealth survey of 15 countries in the Caribbean, Africa, Europe, the Indian Ocean, Asia and the South Pacific. Among the questions addressed in the paper are ones on the range of functions undertaken by Ministries of Education and on such personnel matters as job definition and recruitment. The paper also examines issues of management in the highly personalized environment found in small states.  相似文献   
136.
This article analyzes the impact of the Gramm-Rudman-Hollings (GRH) Act on federal budgetary and fiscal outcomes. Rather than portraying it as a two-on federal budgetary and fiscal outcomes. Rather than portraying it as a two-party game between Congress and the president, each with monolithic policy preferences, we view GRH as a multiparty negotiation game among advocates of different programs and agencies. In this game, agencies subject to sequestration and their congressional advocates have an incentive to reach a budget accord, while those exempt from sequestration do not. Consistent with this argument, we find that GRH has restrained outlays for nonexempt programs and that exempt programs have, if anything, experienced more rapid growth. Overall, GRH is estimated to have restrained outlays by $59 billion by fiscal 1989, and to have restrained outlays more effectively after the 1987 modifications in the Act. The Gramm-Rudman-Hollings Act signals another phase in the decade-long struggle between the White House and Congress over public spending priorities. Our final counterfactual analysis suggests that GRH partially returned federal fiscal and budgetary relationships and priorities to those that prevailed before Reagan.  相似文献   
137.
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   
138.
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   
139.
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   
140.
Abstract: The municipal bond bank (mbb) innovation began in Canada in 1956 and in the United States in 1970. This paper concentrates on why mbbs exist, their characteristics, where they work best, and how they compare with other municipal debt credit enhancement techniques. It concludes with a discussion of the future role these organizations will have in providing long-term capital funding to municipalities in Canada and the United States. Sommaire: Le principe de la Banque d'obligations municipales (BOM) fut introduit en 1956, au Canada et, en 1970, aux États-Unis. Cet article explore la raison d'être des BOMS, leurs caractéristiques, leurs conditions de succés maximum et les compare à d'autres techniques pour rehausser le crédit de la dette municipale. L'article se termine par une discussion sur le rôle que ces organisations auront à l'avenir dam le financement capital à long terme des municipalités au Canada et aux États-Unis.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号