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   905篇
  免费   45篇
各国政治   72篇
工人农民   128篇
世界政治   66篇
外交国际关系   36篇
法律   401篇
中国政治   8篇
政治理论   235篇
综合类   4篇
  2024年   8篇
  2023年   45篇
  2022年   3篇
  2021年   11篇
  2020年   17篇
  2019年   26篇
  2018年   36篇
  2017年   40篇
  2016年   26篇
  2015年   23篇
  2014年   38篇
  2013年   137篇
  2012年   26篇
  2011年   39篇
  2010年   15篇
  2009年   23篇
  2008年   36篇
  2007年   32篇
  2006年   46篇
  2005年   34篇
  2004年   39篇
  2003年   36篇
  2002年   38篇
  2001年   9篇
  2000年   11篇
  1999年   11篇
  1998年   11篇
  1997年   9篇
  1996年   7篇
  1995年   8篇
  1994年   13篇
  1993年   10篇
  1992年   9篇
  1991年   9篇
  1990年   4篇
  1989年   5篇
  1988年   5篇
  1987年   8篇
  1986年   4篇
  1985年   10篇
  1984年   4篇
  1983年   5篇
  1982年   3篇
  1981年   3篇
  1980年   5篇
  1979年   2篇
  1977年   3篇
  1975年   2篇
  1974年   2篇
  1956年   1篇
排序方式: 共有950条查询结果,搜索用时 15 毫秒
51.
Behaviors developed in adolescence influence health later in life. The purpose of this study was to investigate the frequency of health care provider's discussion of health behaviors with overweight and non-overweight adolescents and identify demographic and health behaviors related to exercise, hours of television viewing, and weight issues associated with these discussions. A Cross sectional survey of urban adolescents was conducted. Trained interviewers administered surveys over a three month period in 2001 at an urban academic pediatric and adolescent clinic. The 252 adolescents surveyed had a mean age of 15 with 49% categorized as being at risk for overweight/overweight and 51% as normal weight using the CDC percentiles for BMI. While 16% of the adolescents reported that their physician or nurse discussed the amount of television they watched, rates of discussion related to exercise (58%), and weight (54%) were much higher. In multivariate analyses, health care provider discussions with adolescents regarding exercise were more common for overweight (O.R.=2.42, 95% C.I. [1.28–4.57]) and at risk for overweight (O.R.=1.98, 95% C.I. [1.03–3.81]) adolescents, whereas physician discussion of television viewing was not associated with weight. Discussions of weight were more common for female (O.R.=2.18, 95% C.I. [1.21–3.95]), African-American (O.R.=2.53, 95% C.I. [1.40–4.57]), and overweight (O.R.=3.92, 95% C.I. [1.97–7.81]) adolescents. Even after adjusting for weight, race and gender strongly influenced the frequency of discussions about weight in physician offices. Although health care providers frequently address weight and exercise with adolescents, more discussions related to sedentary behaviors such as television viewing may be warranted to address adolescent obesity.Received PhD in Epidemiology from University of California, San Diego. Research interests include smoking prevention and cessation among adolescents and health promotion interventions.Received MD from University of Missouri-Kansas City and MPH from Johns Hopkins University. Research interests include health services research and research in support of measurable, systematic improvements in the quality of medical care.Received medical degree from Christian Medical College, Punjab, India and Master of Public Health from University of Kansas School of Medicine. Research interests include diet and physical activity behaviors, role of the environment in obesity and obesity prevention, especially among children and adolescents.Received MBBS from Allama Iqbal Medical College, Punjab University, Lahore, Pakistan and MPH from University of Kansas Medical Center. Research interests include smoking cessation, database design, implementation, data management and analysis, and use of information technology in health care settings.Director, Cancer Prevention, Control, and Population Sciences, Kansas Cancer Institute. Received MD/MPH from Tulane University and MS from Harvard School of Public Health. Research interests include disparities in healthcare; smoking cessation among underserved populations, specifically African Americans; diet, nutrition, obesity, and physical activity.  相似文献   
52.
Editor's Note     
Anne Joyce 《中东政策》2006,13(4):iii-iv
  相似文献   
53.
54.
Terrorism     
Rathbone  Anne  Rowley  Charles K. 《Public Choice》2002,111(1-2):1-10
  相似文献   
55.
When a governor announces that a tax increase is necessary, how do voters decide whether the governor is representing the situation honestly, or just preparing to line his or her pockets? This paper presents evidence that voters may look at the tax increases in neighboring states to obtain information on whether a tax increase is appropriate and, using this information, decide whether to reelect their governor. The data suggest that comparisons with neighbors influence gubernatorial behavior: Governors are more likely to raise taxes when neighbors are doing the same. TRA86 allows us an extra check on the rnodelpresented: I f the marginal dollar taken in state taxes is more costly to state residents, this may increase the extent to which residents use information provided through neighboring states to sort good governors from bad.  相似文献   
56.
Cook county jail     
Anne Stevens 《Society》1974,11(5):71-74
  相似文献   
57.
Underwood A 《Newsweek》2004,144(6):54
  相似文献   
58.
Degradation of human DNA extracted from forensic stains is, in most cases, the result of a natural process due to the exposure of the stain samples to the environment. Experiences with degraded DNA from casework samples show that every sample may exhibit different properties in this respect, and that it is difficult to systematically assess the performance of routinely used typing systems for the analysis of degraded DNA samples. Using a batch of artificially degraded DNA with an average fragment size of approx. 200 bp a collaborative exercise was carried out among 38 forensic laboratories from 17 European countries. The results were assessed according to correct allele detection, peak height and balance as well as the occurrence of artefacts. A number of common problems were identified based on these results such as strong peak imbalance in heterozygous genotypes for the larger short tandem repeat (STR) fragments after increased PCR cycle numbers, artefact signals and allelic drop-out. Based on the observations, strategies are discussed to overcome these problems. The strategies include careful balancing of the amount of template DNA and the PCR cycle numbers, the reaction volume and the amount of Taq polymerase. Furthermore, a careful evaluation of the results of the fragment analysis and of automated allele calling is necessary to identify the correct alleles and avoid artefacts.  相似文献   
59.
This article reports an evaluation of a community intellectual disability offender service over the period from 1990 to 2001. Men who committed sex offenses or sexually abusive incidents (n = 106) and men who committed other types of offenses and serious incidents (n = 78) are compared on personal characteristics, referral sources, forensic details, and outcome up to 7 years after referral. The cohorts are older than one would expect from the criminology literature, and, at about 33%, the incidence of mental illness is consistent with some previous studies. A greater proportion of sex offenders had criminal justice involvement and a formal disposal from court. Fire raising was not overly represented as an offense. There was a higher rate of reoffending in the nonsexual cohort, which persisted up to 7 years. Investigating only reoffenders, there was a considerable amount of harm reduction recorded up to 7 years, statistically significant up to 5 years following initial referral.  相似文献   
60.
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