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   3900篇
  免费   138篇
各国政治   144篇
工人农民   128篇
世界政治   244篇
外交国际关系   132篇
法律   2728篇
中国政治   35篇
政治理论   614篇
综合类   13篇
  2021年   31篇
  2020年   57篇
  2019年   54篇
  2018年   87篇
  2017年   99篇
  2016年   91篇
  2015年   70篇
  2014年   81篇
  2013年   299篇
  2012年   92篇
  2011年   114篇
  2010年   83篇
  2009年   93篇
  2008年   115篇
  2007年   87篇
  2006年   113篇
  2005年   91篇
  2004年   102篇
  2003年   97篇
  2002年   95篇
  2001年   186篇
  2000年   136篇
  1999年   104篇
  1998年   38篇
  1997年   47篇
  1996年   35篇
  1995年   49篇
  1994年   44篇
  1993年   56篇
  1992年   81篇
  1991年   86篇
  1990年   77篇
  1989年   64篇
  1988年   84篇
  1987年   81篇
  1986年   99篇
  1985年   108篇
  1984年   86篇
  1983年   80篇
  1982年   38篇
  1981年   36篇
  1979年   34篇
  1978年   32篇
  1975年   31篇
  1974年   45篇
  1973年   25篇
  1972年   27篇
  1971年   31篇
  1970年   30篇
  1968年   32篇
排序方式: 共有4038条查询结果,搜索用时 15 毫秒
121.
Fluoxetine is a selective serotonin reuptake inhibitor, commonly used for the treatment of a variety of psychopathological conditions. As such, fluoxetine may be expected to appear in clinical and forensic cases. Dermestes maculatus De Geer (Coleoptera: Dermestidae) has been recognized as a relevant component of the insect fauna associated with decomposing human and animal remains. Experiments were conducted to study the effect of fluoxetine on developing D. maculatus using two‐drug administration models: a non‐living animal model (pork muscle) and a living one (Sus scrofa L. pigs). We assessed the duration of immature stages and total life cycle, as well as morphological parameters (body length, cephalic width, and weight). The effect of fluoxetine was studied at an overdose concentration: In the non‐living animal model the drug was mixed with macerated pork muscle (2000 mg/kg) and in the living animal model, pigs were given the drug orally (833 mg/kg). A control was used for each model. Daily observations were performed from the beginning to the end of the experiments. GC‐MS was used for drug detection and quantification. There were no statistically significant differences in the duration of immature stages, life cycle, larval mortality, morphological parameters, or sex ratio, between treatment and control, regardless of the drug administration model. Given that fluoxetine had no detectable effect on the development of D. maculatus, detection of this drug in forensic situations would not compromise the accuracy of PMI estimations.  相似文献   
122.
123.
124.
European Journal of Law and Economics - Epstein (Simple rules for a complex world, Harvard University Press, Cambridge, 1995) defended the superiority of simple legal rules over complex,...  相似文献   
125.
The activism of women Conservatives helped Tory democracy to adapt and survive in inter-war Lancashire at a time when it was under strain due to the arrival of Labour as a significant electoral force. This article utilises the surviving records of the party in Lancashire to examine the various ways that women entered, navigated, justified and expanded their membership and function in inter-war Conservatism. It acknowledges the limits on women's advancement and influence, but it also highlights how some women made significant progress in rising through the party structures, and how women's branches facilitated this political mobility. It challenges the assumption that women Conservatives were preoccupied with sociability and discussing domestic issues, and reveals their contribution to the electoral success of the party at local level, and interaction with Lancashire's distinct tradition of Conservatism.  相似文献   
126.
Using the Princeton nuptiality index Im, we analyzed historical developments in the proportion of married women of reproductive age in Spain. We show the internal diversity in nuptiality patterns and offer an explanatory statistical model based on panel data analysis to identify the main variables influencing these changes over more than a century (1887–1991). We found that Spain has been the developed country with the greatest contrasts in its provincial nuptiality patterns (measured by Im), although this diversity has lessened over the course of time. We also found that some socioeconomic variables (the gross domestic product per capita and the percentage of population living in cities) do not have a linear relationship with female nuptiality but rather have a U shape or an inverted U shape. This may partly account for some of the controversy that has raged on this topic over the past few decades on an international level.  相似文献   
127.
In this article, we present findings from a grant-funded initiative to replace traditional, proprietary textbooks with an open content textbook under a Creative Commons license in the introductory American government course (POLS 1101) at Middle Georgia State University. We find that the use of an open content textbook led to somewhat negative effects on student learning outcomes and student course satisfaction, although the associated lower textbook cost increased textbook accessibility to students. We conclude with some suggestions to those adopting textbooks in this course and to the wider discipline regarding measures that may lead to more unequivocally positive outcomes than those experienced in this study.  相似文献   
128.
129.
Mauricio Font, The State and the Private Sector in Latin America: The Shift to Partnership. New York: Palgrave Macmillan, 2015. Figure, bibliography, appendixes, index, 318 pp.; hardcover $100, ebook $79.99. Tracy Beck Fenwick, Avoiding Governors: Federalism, Democracy, and Poverty Alleviation in Brazil and Argentina. Notre Dame: University of Notre Dame Press, 2016. Tables, figures, acronyms, bibliography, index, 277 pp.; hardcover $75, paperback $29. Michael Reid, Brazil: The Troubled Rise of a Global Power. New Haven: Yale University Press, 2016 [2014]. Illustrations, 352 pp.; paperback $22. Ben Ross Schneider, ed., New Order and Progress: Development and Democracy in Brazil. New York: Oxford University Press, 2016. Tables, figures, bibliography, index, 328 pp.; hardcover $99, paperback $31.95, ebook. Anthony P. Maingot, Race, Ideology, and the Decline of Caribbean Marxism. Gainesville: University Press of Florida, 2015. Index, 368 pp.; hardcover $79.95. Sebastián Ureta, Assembling Policy: Transantiago, Human Devices, and the Dream of a World‐Class Society. Cambridge: MIT Press, 2015. Photographs, figures, abbreviations, bibliography, index, 224 pp.; hardcover $39, ebook $27. Carlos de la Torre, De Velasco a Correa: insurreciones, populismos y elecciones en Ecuador, 1944–2013. Quito: Corporación Editora Nacional, 2015. Tables, bibliography, 243 pp.; paperback. Sebastian E. Bitar, US Military Bases, Quasi‐Bases, and Domestic Politics in Latin America. New York: Palgrave Macmillan, 2016. Map, figures, tables, notes, bibliography, index, 220 pp.; hardcover $110, ebook $79.99.  相似文献   
130.
This study examined the relationship between limited English proficiency status, and internalizing and externalizing behaviors among a sample of Latino/a children (N = 2,840) from the US Department of Education’s Early Childhood Longitudinal Study, Kindergarten (ECLS-K) data set. Results of cross sectional regression and hierarchical linear modeling (HLM) analyses suggest that there is a positive relationship between limited English proficiency and externalizing symptoms, particularly by third grade. Additionally, sex and place of birth also helped to explain externalizing behaviors at various time points in the models. Place of birth and family poverty were significantly associated with internalizing symptoms. Implications for future research and interventions related to internalizing and externalizing behavior among the Latino/a school aged population are discussed.
Sheara A. WilliamsEmail:

Beverly Araújo Dawson   is an assistant professor in the School of Social Work at Adelphi University, New York. She received her doctoral and master’s degree from the University of Michigan and a B.A. in psychology from Hunter College. Her research interests focus on the impact of psychosocial stressors on the mental health of Latino/a immigrants. Sheara Williams   is an assistant professor in the Graduate College of Social Work at the University of Houston. She received her Ph.D. from the University of North Carolina, Chapel Hill; an M.S.W. from Louisiana State University; and a B.S. from Southern University, A & M. Her research interests focus on psychosocial factors related to school behavior and academic achievement for poor and minority children.  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