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   577篇
  免费   39篇
各国政治   52篇
工人农民   17篇
世界政治   60篇
外交国际关系   53篇
法律   278篇
中国政治   7篇
政治理论   142篇
综合类   7篇
  2023年   3篇
  2022年   3篇
  2020年   8篇
  2019年   10篇
  2018年   26篇
  2017年   27篇
  2016年   29篇
  2015年   35篇
  2014年   20篇
  2013年   99篇
  2012年   14篇
  2011年   21篇
  2010年   15篇
  2009年   17篇
  2008年   14篇
  2007年   22篇
  2006年   21篇
  2005年   25篇
  2004年   23篇
  2003年   21篇
  2002年   25篇
  2001年   9篇
  2000年   7篇
  1999年   10篇
  1998年   9篇
  1997年   4篇
  1996年   12篇
  1995年   6篇
  1994年   9篇
  1993年   3篇
  1992年   4篇
  1991年   5篇
  1990年   2篇
  1989年   6篇
  1988年   3篇
  1987年   4篇
  1986年   8篇
  1985年   4篇
  1984年   3篇
  1983年   3篇
  1982年   2篇
  1980年   4篇
  1979年   8篇
  1977年   2篇
  1976年   2篇
  1971年   1篇
  1970年   1篇
  1969年   1篇
  1968年   1篇
  1965年   1篇
排序方式: 共有616条查询结果,搜索用时 15 毫秒
41.
42.
Based on field interviews in Singapore in 1985, 1997, and 2003, this article addresses the issue of how island ecology helps explain the remarkable low rates of crime that are often attributed mainly to cultural and government policies. Understanding crime and control on this most densely populated Southeast Asian atoll must begin with how people are dispersed over the limited spatial area. Ecology also influences how styles of some crimes are defined and controlled. Several of Donald Black's propositions are given further consideration.  相似文献   
43.
Risk adjustment (RA) consists of a series of techniques that account for the health status of patients when predicting or explaining costs of health care for defined populations or for evaluating retrospectively the performance of providers who care for them. Although the federal government seems to have settled on an approach to RA for Medicare Advantage programs, adoption and implementation of RA techniques elsewhere have proceeded much more slowly than was anticipated. This article examines factors affecting the adoption and use of RA outside the Medicare program using case studies in six U.S. health care markets (Baltimore, Seattle, Denver, Cleveland, Phoenix, and Atlanta) as of 2001. We found that for purchasing decisions, RA was used exclusively by public agencies. In the private sector, use of risk adjustment was uncommon and scattered and assumed informal and unexpected forms. The most common private sector use of RA was by health plans, which occasionally employed RA in negotiations with purchasers or to allocate resources internally among providers. The article uses classic technology diffusion theory to explain the adoption and use of RA in these six markets and derives lessons for health policy generally and for the future of RA in particular. For health policy generally, the differing experiences of public and private actors with RA serve as markers of the divergent paths that public and private health care sectors are pursuing with respect to managed care and risk sharing. For the future of RA in particular, its history suggests the need for health service researchers to consider barriers to use adoption and new analytic technologies as they develop them.  相似文献   
44.
45.
To promote an understanding of the implications of current structures and processes for medical necessity determinations that affect everyone, directly or indirectly, the American Health Lawyers Association will devote its biannual Public Interest Colloquium (to be held in February 2005) to the topic. In preparation for the colloquium, the author summarizes the history and current importance of the topic, identifies stakeholders in the system and their interests, and sets forth a preliminary list of issues to be considered by the colloquium participants, focusing on potential elements of an ideal system for making medical necessity determinations.  相似文献   
46.
A simple method for analyzing nitrite in urine has been developed to confirm and quantify the amount of nitrite in potentially adulterated urine samples. The method involved separation of nitrite by capillary electrophoresis and direct UV detection at 214 nm. Separation was performed using a bare fused silica capillary and a 25 mM phosphate run buffer at a pH of 7.5. Sample preparation consisted of diluting the urine samples 1:20 with run buffer and internal standard, and centrifuging for 5 min at 2500 rpm. The sample was hydrodynamically injected, then separated using -25 kV with the column maintained at 35 degrees C. The method had upper and lower limits of linearity of 1500 and 80 microg/mL nitrite, respectively, and a limit of detection of 20 microg/mL. The method was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) protocol (Document EP10-A2), and validated using controls, standards, and authentic urine samples. Ten anions, ClO-, CrO4(-2), NO3-, HCO3-, I-, CH3COO-, F-, SO4-, S2O8(-2), and Cl-, were tested for potential interference with the assay. Interferences with quantitation were noted for only CrO4(-2) and S2O8(-2). High concentrations of Cl- interfered with the chromatography. The method had acceptable accuracy, precision, and specificity.  相似文献   
47.
48.
49.
Supraphysiologic doses of testosterone are associated with increased aggression that is hypothesized to be a function of testosterone serum concentrations, mood, and personality. The study attempted to characterize this relationship among weightlifters who were users (n = 10) and nonusers (n = 18) of anabolic steroids. Participants were interviewed using the Modified Mania Rating Scale and Hamilton Rating Scale for Depression to assess mood, the Buss-Durkee Hostility Inventory (BDHI) and Point Subtraction Aggression Paradigm (PSAP) to assess aggression, and the Personality Disorder Questionnaire (PDQ-R) to assess personality. Blood samples were obtained for the determination of total, free, and weakly bound testosterone. Comparisons of continuous variables between testosterone users and non-users were performed with a parametric (unpaired t-test) or non-parametric (Mann-Whitney) test where appropriate. Correlations with testosterone were examined separately for testosterone users and non-users, using Spearman rank correlation. The subjective (BDHI) and objective (PSAP) assessments of aggression found that supranormal testosterone concentrations were associated with increased aggression. However, the PDQ-R results suggest that this finding was confounded by the personality disorder profile of the steroid users, because steroid users demonstrated Cluster B personality disorder traits for antisocial, borderline, and histrionic personality disorder.  相似文献   
50.
This article explores the potential evisceration of the deterrence function of punitive damages, one of the only economic incentives that deters insurance companies from opportunistically breaching their insurance policies. Readers will gain an understanding of why large punitive damages awards are essential in the insurance coverage field and how such awards may implicate due process standards. The article explains the constitutional limitations set forth by the U.S. Supreme Court in imposing punitive damages, and provides a roadmap of how lower courts and practitioners are presently applying these rules.  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