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   20164篇
  免费   662篇
  国内免费   5篇
各国政治   791篇
工人农民   880篇
世界政治   1359篇
外交国际关系   701篇
法律   13002篇
中国共产党   6篇
中国政治   174篇
政治理论   3729篇
综合类   189篇
  2020年   264篇
  2019年   332篇
  2018年   420篇
  2017年   473篇
  2016年   492篇
  2015年   342篇
  2014年   372篇
  2013年   1835篇
  2012年   532篇
  2011年   579篇
  2010年   469篇
  2009年   512篇
  2008年   581篇
  2007年   627篇
  2006年   614篇
  2005年   535篇
  2004年   537篇
  2003年   569篇
  2002年   486篇
  2001年   811篇
  2000年   703篇
  1999年   588篇
  1998年   294篇
  1997年   221篇
  1996年   250篇
  1995年   216篇
  1994年   251篇
  1993年   237篇
  1992年   407篇
  1991年   435篇
  1990年   447篇
  1989年   382篇
  1988年   433篇
  1987年   380篇
  1986年   406篇
  1985年   365篇
  1984年   293篇
  1983年   283篇
  1982年   221篇
  1981年   233篇
  1980年   166篇
  1979年   217篇
  1978年   155篇
  1977年   125篇
  1976年   125篇
  1975年   149篇
  1974年   166篇
  1973年   126篇
  1972年   118篇
  1970年   115篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
932.
933.
934.
935.
936.
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   
937.
938.
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   
939.
Book review     
  相似文献   
940.
Federalism, as a concept and as a reality, received assistancefrom a variety of sources during 1994–1995. 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   
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