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   798篇
  免费   40篇
各国政治   97篇
工人农民   23篇
世界政治   67篇
外交国际关系   47篇
法律   374篇
中国共产党   1篇
中国政治   6篇
政治理论   218篇
综合类   5篇
  2023年   4篇
  2022年   4篇
  2021年   5篇
  2020年   17篇
  2019年   20篇
  2018年   21篇
  2017年   27篇
  2016年   29篇
  2015年   27篇
  2014年   28篇
  2013年   138篇
  2012年   21篇
  2011年   20篇
  2010年   25篇
  2009年   14篇
  2008年   23篇
  2007年   20篇
  2006年   31篇
  2005年   31篇
  2004年   26篇
  2003年   32篇
  2002年   36篇
  2001年   10篇
  2000年   12篇
  1999年   13篇
  1998年   20篇
  1997年   18篇
  1996年   10篇
  1995年   5篇
  1994年   12篇
  1993年   16篇
  1992年   9篇
  1991年   8篇
  1990年   7篇
  1989年   10篇
  1988年   17篇
  1987年   5篇
  1986年   4篇
  1985年   3篇
  1984年   7篇
  1983年   4篇
  1982年   5篇
  1981年   7篇
  1979年   7篇
  1978年   5篇
  1975年   3篇
  1973年   3篇
  1972年   4篇
  1971年   2篇
  1968年   3篇
排序方式: 共有838条查询结果,搜索用时 15 毫秒
251.
The United States has not had a consistent, comprehensive youth employment policy. Program objectives are not clear and are often in conflict with the objectives of other programs aimed at the same target population. The primary needs at this juncture are a clearly specified policy objective and a method for identifying the ways in which potential interventions can help attain that objective.The authors argue that the genesis of public concern with youth employment problems lies in the general acceptance of greater equality of opportunity as a national goal. The appropriate objective of youth employment policy is conceptualized as the reduction of certain inequalities in economic opportunity that confront the young.Equality of economic opportunity is a long-run concept. The relations between actions at a point in time and opportunity over time are developed within a model of youth behavior. The analysis focuses on the notions of career paths, employment success, and economic oportunity.The Research reported here was supported by the Office of Economic Opportunity. The authors owe much to the deliberations and suggestions of: K. Arrow, A. Carlin, J. Coleman, A. Cook, Jr., R. Dorfman, G. Fishman, T. Glennan, Jr., D. Greenberg, P. Katsky, S. M. Lipset, L. Rapping, T. Schelling, E. Sheldon, R. Summers, T. Tomlinson, B. Williams, W. Williams, and A. Wohlstetter. Sole responsibility for any errors or omissions, of course, resides with the authors.  相似文献   
252.
Age determination is a major field of interest in forensic anthropology. Among the different methods based on macroscopic skeletal study, the Suchey-Brooks method, which analyzes the pubic symphysis, is one of the most reliable. We applied the Suchey-Brooks method to three-dimensional computed tomographic reconstructions of the pubic symphysis. We demonstrated excellent agreement between the results of analysis of bone samples and those of the three-dimensional images, in particular regarding ridges of the articular surface and delimitation of the extremities. The accuracy of age estimation did not significantly differ (Wilcoxon test) between the Suchey-Brooks method applied to bones and the same method applied to CT images. Using high-quality images, this approach seems as reliable as the standard Suchey-Brooks method and offers several advantages: no bone preparation, no damage to bone material, and the possibility of application to living individuals.  相似文献   
253.
We measured levels of methamphetamine and those of its metabolite amphetamine in 15 autopsied brain regions of 14 human methamphetamine users. Only slight regional differences were observed in drug concentrations among the brain areas. Although, some redistribution of the drugs probably occurred postmortem, these data suggest that methamphetamine might not be preferentially retained in dopamine-rich brain areas but is heterogenously distributed in brain of chronic human users of the drug. The possible pharmacological actions of methamphetamine in both dopamine-rich and poor brain areas of chronic drug users need to be considered.  相似文献   
254.
This paper tests hypotheses implicit in the societal-reaction perspective concerning the nature and pattern of the relationship between prior and current youth court dispositions. The dispositional stage is the most critical decision-making level which young offenders encounter in their contact with the youth court system. Previous research has produced inconsistent results in the attempt to determine which model or models of justice underlie dispositional decisions by youth court judges. Log-linear modeling is employed on 16,636 youth court cases in Canada in 1993/1994 to determine the nature and magnitude of the relationship between current and prior dispositions. The results indicate that prior youth court dispositions exert a significant impact on current dispositions, even when relevant variables are controlled. Evidence is found mainly of stabilization—the repetition of the same type of disposition—and also of escalation in dispositions. These findings provide support for the societal-reaction theory and possibly for the desert-based theory of sentencing.  相似文献   
255.
Suicide by cop has become a familiar topic among members of law enforcement, mental health professionals, and the general public. This paper presents two cases where police officers chose to commit suicide by getting other police officers to kill them. The two police officers studied, by examination of closed case files, were found to be similar to civilians who committed suicide by cop on several demographic (gender, age, history of mental illness, and suicide attempts), and situational (stress factors, trigger) variables. The cases help us to understand possible motives and management for individuals who choose to end their life in this manner.  相似文献   
256.
This study examines the relationship between recidivism rates, therapeutic climate, and composition of offenders in group-based cognitive-behavioral treatment (CBT) for sexual offenders. The Group Environment Scale (GES) is employed to measure social climate. The GES is administered to 73 male sexual offenders in groups of those who only victimized adults or children (five groups) or men who both victimized adults and those who victimized children (five groups). Group environment is not found to differ significantly as a function of group composition. Group member's ratings on the GES are in the medium to high range, indicating a generally positive group environment. Although the group environment overall does not differ between groups, groups do differ significantly in terms of expressiveness. There are no differences in recidivism rates between groups as a function of group composition. The results are discussed in the light of mixing child molesters and rapists in group-based CBT.  相似文献   
257.
Richard Posner’s influence on the field of law and economics cannot be overstated. Among his many contributions, Posner offered an early conjecture that remains fascinating and controversial to this day: the idea that common law rules are more likely than legislative codes to be concerned with efficiency. In this paper, I compare the efficiency of a common law rule of contracting to the efficiency of a civil law rule. In common law jurisdictions, claimants must have knowledge of a reward in order to recover. In civil law jurisdictions, however, no such knowledge is required. I analyze the efficiency of each rule by examining the incentives created by each rule. In a finding that agrees with Posner’s hypothesis, I argue that the common law rule is more efficient. The model has a number of applications beyond contract default laws. I use the model to discuss three legal questions previously analyzed by Richard Posner: (1) incentivizing innovation; (2) the finders-keepers rule in property law; and (3) salvage rights in maritime law.  相似文献   
258.
Through interviews with 25 school board trustees in Ontario, this article contributes to the growing literature that explores the politics-administration dichotomy at the local government level in Canada. While existing literature is oriented from the perspective of the local government administrator, we examine the relations between local government politicians and administrators from the orientation of the former to determine how they navigate the dichotomy, particularly in a context where it is arguably more contested. We identify six informal practices trustees adopt in representing constituents and confronting tensions inherent in their role, namely: navigating, influencing, listening, translating, informing, and uploading.  相似文献   
259.
260.
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