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   1301篇
  免费   55篇
各国政治   50篇
工人农民   204篇
世界政治   100篇
外交国际关系   66篇
法律   624篇
中国政治   13篇
政治理论   294篇
综合类   5篇
  2023年   8篇
  2021年   8篇
  2020年   21篇
  2019年   27篇
  2018年   32篇
  2017年   40篇
  2016年   47篇
  2015年   27篇
  2014年   28篇
  2013年   186篇
  2012年   55篇
  2011年   53篇
  2010年   34篇
  2009年   41篇
  2008年   51篇
  2007年   50篇
  2006年   63篇
  2005年   45篇
  2004年   39篇
  2003年   51篇
  2002年   56篇
  2001年   22篇
  2000年   31篇
  1999年   18篇
  1998年   16篇
  1997年   19篇
  1996年   17篇
  1995年   22篇
  1994年   17篇
  1993年   12篇
  1992年   17篇
  1991年   20篇
  1990年   11篇
  1989年   15篇
  1988年   15篇
  1987年   14篇
  1986年   9篇
  1985年   14篇
  1984年   8篇
  1983年   7篇
  1982年   14篇
  1981年   7篇
  1980年   11篇
  1979年   11篇
  1978年   10篇
  1977年   7篇
  1976年   5篇
  1975年   5篇
  1974年   5篇
  1973年   4篇
排序方式: 共有1356条查询结果,搜索用时 15 毫秒
81.
82.
Brinton  Mary C. 《Policy Sciences》2000,33(3-4):289-306
This paper develops the concept of institutional social capital and discusses its importance in the labor market. Institutional social capital is constituted by the resources inherent in an organization (such as a school) and thereby available to members of that organization. This is contrasted with the social capital available to individuals through their own personal networks. In the labor market context, an example of institutional social capital is the ties that schools have with employers who recruit a proportion of their new employees as they prepare to graduate. The paper examines how these ties and the norms governing the important labor market screening role played by the high school developed in post-WWII Japan. I also discuss an important positive externality – social control over students – generated by schools institutional social capital. Finally, I examine current challenges to Japanese high schools institutional social capital.  相似文献   
83.
84.
85.
A qualitative and quantitative analytical method was developed and validated for the determination of 49 licit and illicit drugs in oral fluid. Small oral fluid samples, volume 1mL, were collected from volunteers using a modified Omni-Sal device and the analytes were extracted from an oral fluid/buffer mixture using a single Bond Elut Certify solid phase extraction cartridge. Liquid chromatography-tandem mass spectrometry (LC-MS-MS) and gas chromatography-repetitive full scan mass spectrometry (GC-MS) were used in parallel to analyze the extracts for the targeted drugs. Extracts were analyzed by GC-MS in their underivatized form and as their pentafluoropropionyl derivatives. Deuterated internal standards were used for quantification of drugs of abuse by LC-MS-MS to minimize matrix effects. Methadone-d(9) and tumoxetine were used as the internal standards for quantification of non-derivatized and derivatized analytes respectively by GC-MS. Linearity was demonstrated over the range 5-200 ng/mL and limits of detection were less than 4 ng/mL for each drug analyzed. The method demonstrated acceptable recoveries for most of the analytes and good intra- and inter-day precision. Acquisition of data by repetitive full scan GC-MS allows the addition of further analytes to the target menu.  相似文献   
86.
Carmichael M 《Newsweek》2004,144(23):44-6, 49-50
  相似文献   
87.
88.
This article addresses the potential role of business leadership in diverse efforts to reform health care financing: exploring managers efforts to alter health care markets in their role as large purchasers of health insurance, their potential contributions to future national policy proposals, and their involvement with community-level activities to control local health costs and quality. I argue that managers' leadership in market restructuring and community health initiatives will be difficult to reproduce in the realm of major national health policy initiatives due to constraints related to ideas, interests, and organization.  相似文献   
89.
The article describes a study of the perceptions of three groups--patients, orthopaedic surgeons and the surgeons' practice managers--concerning three types of legal risk associated with the duty of care: failure to follow up, failure to warn and failure to diagnose. The study found there is cause for concern about doctors' follow-up and documentation of patient care. Doctors may be unaware of the Australian courts' propensity to emphasise practitioner responsibility rather than patient autonomy. A further important result is the considerable disparity between the surgeons' views and the views of their practice managers about the duty of care. The article draws out implications for improved risk awareness and suggests further research.  相似文献   
90.
The contraceptive behavior of adolescent girls was viewed from a decision-making perspective. A semistructured interview protocol was used in interviewing 120 girls aged 12–19 in three clinics (Teen Family Planning, Prenatal, Pediatric Acute Care) at Michael Reese Hospital and Medical Center on (1) demographic in formation; (2) sexual and obstetric history; (3) contraceptive and sexual knowledge, attitudes, and practices; (4) environmental pressures; (5) personality factors; and (6) decision-making style. We found that the girls were generally poor contraceptors. They viewed the costs of contraception (in terms of safety) to be high; and they positively valued physical intimacy, opportunities for which come up unexpectedly and sporadically. These factors, along with their ambivalent views toward pregnancy and childbearing seemed to encourage their risk-taking behavior. Once pregnancy occurred, it was carried to term because of the strong internal and external pressures they felt to have and keep the baby. The peer-led intervention program that we are developing based on the survey findings will focus on (1) the teenagers' lack of accurate and complete knowledge about birth control and conception, (2) their limited sense of options concerning birth control and pregnancy outcomes, and (3) their poor understanding of and lack of insight into what motivates their behavior.This study is part of the investigation being conducted by the YADMAC (Young Adult and Adolescent Decision Making About Contraception) Project at Michael Reese Hospital and Medical Center, 2959 South Cottage Grove, Chicago, Illinois 60616. The authors are all members of the YADMAC research team.Received Ph.D. from the University of Chicago. Current interests are human sexuality and reproductive behavior. Currently at Department of Psychology, St. Xavier College.Received M.D. from the University of Michigan. Current interests are liaison child psychiatry and adolescent sexuality.Received Ph.D. from the University of Chicago. Current interests are early adolescent development issues.Current interests are puberty and sex differences.B. A. candidate in social work, Roosevelt University. Current interests are adolescent sexuality and contraceptive behavior.  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