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   115篇
  免费   12篇
各国政治   4篇
工人农民   13篇
世界政治   14篇
外交国际关系   4篇
法律   75篇
中国政治   2篇
政治理论   15篇
  2023年   2篇
  2021年   2篇
  2020年   2篇
  2019年   3篇
  2018年   8篇
  2017年   5篇
  2016年   4篇
  2015年   10篇
  2014年   7篇
  2013年   14篇
  2012年   3篇
  2011年   5篇
  2010年   7篇
  2009年   3篇
  2008年   2篇
  2007年   6篇
  2006年   5篇
  2005年   5篇
  2004年   4篇
  2003年   3篇
  2002年   3篇
  2001年   1篇
  1999年   2篇
  1998年   3篇
  1995年   1篇
  1994年   1篇
  1992年   2篇
  1990年   1篇
  1988年   2篇
  1985年   3篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1981年   4篇
  1968年   1篇
排序方式: 共有127条查询结果,搜索用时 15 毫秒
1.
2.
3.
The stepping-stone theory of progression into drug use is examined, based on the alcohol and other drug use of over 27,000 seventh-through eighth-grade students in New York State. The data show that students do not use illicit drugs unless they also use alcohol. White, black and Hispanic students all tend to initiate the use of drugs in the following order-alcohol, marijuana, pills, and hard drugs. Among blacks and Hispanics, pills are not as important a transition between marijuana and hard drugs as they are among whites. Cigarettes form an important step between alcohol and marijuana use for younger students, particularly for females. Since alcohol serves as the gateway to all other drug use, prevention approaches that control and limit alcohol use among adolescents may be warranted.He received his Ph. D. in Psychology for the State University of New York at Buffalo in 1976. His research interests are the social and psychological correlates of drinking.She received her Ph.D. in Sociology from the State University of New York at Buffalo in 1983.  相似文献   
4.
Gas chromatography-mass spectrometry was used to compare gasoline samples obtained from different sources based on the difference in amounts of certain components found in the headspace of gasoline using target response data. Many suspected arson cases involve comparing an ignitable liquid extracted from fire debris to a liquid found in a suspect's possession to determine if they could have had a common source. Various component ratios are proposed for determining if an unevaporated gasoline sample could have originated from the same source as an evaporated gasoline extracted from fire debris. Fifty and 75% evaporated gasoline samples were both found to contain similar ratios of certain components when compared with its unevaporated source gasoline. The results of the comparisons in this study demonstrate that for cases involving gasoline that has been evaporated up to 50% and extracted from pine, it is possible to eliminate comparison samples as originating from the same source. The results of the 75% comparisons suggest it may be possible to apply the same type of comparison to cases involving 75% evaporated gasoline.  相似文献   
5.
6.
It has been estimated that deregulation of US S&Ls will cost the US taxpayer £500bn in terms of the compensation paid out for the resulting scandals and failures. In contrast, the deregulation of UK building societies, although initially followed by a series of scandals and losses of £1bn., eventually resulted in substantially increased profitability. The social effects in the UK have been quite different to those in the US. As a result of the increased importance placed on profitability as opposed to mutuality, many homeowners have had their properties repossessed, and investors been mis-soId unsuitable investments. However, UK building societies, by a mixture of good luck and judgement, have avoided the principal regulatory pitfalls, which beset the S&Ls in terms of bankruptcies and fraud. This paper seeks to explain these different post-deregulation experiences. It extends to the UK the looting model of Akerlof and Romer (1993) and the managerial diversion model of Nichols (1972) which went so far to explain and anticipate, respectively, the US experience. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
7.
8.
Political Behavior - Much of the gender gap literature focuses on women’s greater average liberalism relative to men. This approach masks considerable heterogeneity in political identity and...  相似文献   
9.
Although multiracial individuals are the fastest growing population in the United States, research on the identity development of multiracial adolescents remains scant. This study explores the relationship between ethnic identity, its components (affirmation, exploration), and mental health outcomes (anxiety, depressive symptoms) within the contexts of schools for multiracial adolescents. The participants were multiracial and monoracial minority and majority high school students (n = 4,766; 54.6 % female). Among the participants, 88.1 % were Caucasian, 7.4 % were African American, and 4.5 % were multiracial. The research questions examined the relationship between ethnic identity exploration and affirmation on mental health outcomes and explored the role school context plays in this relationship. The findings suggested that multiracial youth experience more exploration and less affirmation than African Americans, but more than Caucasians. In addition, multiracial youth were found to have higher levels of mental health issues than their monoracial minority and majority peers. Specifically, multiracial youth had higher levels of depressive symptoms than their African American and Caucasian counterparts. Multiracial and Caucasian youth had similar levels of anxiety but these levels were significantly higher than African Americans. School diversity did not influence mental health outcomes for multiracial youth. These findings provide insight into the experiences of multiracial youth and underscore the importance of further investigating factors that contribute to their mental health outcomes.  相似文献   
10.
Understanding the relationships between youthful gambling, substance use, and other problem behaviors is of interest to researchers studying deviance and to policymakers developing improved prevention strategies. This study used first-order and second-order factor models to test the hypothesis that gambling, alcohol misuse, other drug use, and delinquency were manifestations of a single general deviance construct. Respondents were seventeen to twenty-one year-old youth who were interviewed in two separate general population studies. Contrary to the hypothesis, the second-order model with a single deviance construct did not fit as well as a model specifying only correlations among all first-order factors. A single latent variable representing general deviant behavior did not explain deviance as well as distinct types of problem behaviors. This was true for overall samples and for gender-specific subgroups. Thus, while problem behaviors were related, there also must be uncorrelated antecedents predicting distinct types of youthful problem behaviors.  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