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   2190篇
  免费   110篇
各国政治   143篇
工人农民   107篇
世界政治   216篇
外交国际关系   118篇
法律   1047篇
中国政治   12篇
政治理论   638篇
综合类   19篇
  2023年   11篇
  2022年   5篇
  2021年   21篇
  2020年   46篇
  2019年   56篇
  2018年   71篇
  2017年   91篇
  2016年   73篇
  2015年   59篇
  2014年   84篇
  2013年   335篇
  2012年   75篇
  2011年   99篇
  2010年   61篇
  2009年   80篇
  2008年   64篇
  2007年   85篇
  2006年   85篇
  2005年   86篇
  2004年   75篇
  2003年   87篇
  2002年   83篇
  2001年   42篇
  2000年   44篇
  1999年   39篇
  1998年   39篇
  1997年   40篇
  1996年   31篇
  1995年   35篇
  1994年   31篇
  1993年   21篇
  1992年   21篇
  1991年   16篇
  1990年   25篇
  1989年   15篇
  1988年   25篇
  1987年   16篇
  1986年   9篇
  1985年   19篇
  1984年   18篇
  1983年   12篇
  1982年   7篇
  1981年   9篇
  1980年   10篇
  1979年   6篇
  1978年   5篇
  1976年   7篇
  1973年   4篇
  1970年   4篇
  1967年   3篇
排序方式: 共有2300条查询结果,搜索用时 78 毫秒
161.
Reviews the need for and development of expanded school mental health (ESMH) programs, which provide a continuum of mental health promotion and intervention through school–community partnerships. Since ESMH is a relatively new, but increasingly prominent field, countless issues are being addressed in practice and research and in efforts to bridge practice and research. We review particular content and context dimensions of ESMH in need of development including quality assessment and improvement, empirically supported practice, improving assessment and outcome evaluation, involving educators in the work, understanding school environments, and tailoring programs through qualitative research. Summaries of articles that amplify these themes are provided.  相似文献   
162.
Over 20% of a sample of 706 young adolescents identified themselves as experiencing difficulties and being in need of specific help in coping. A psychoeducational Program Helping Adolescents Cope was offered to 112 of those. This was adapted, with permission, from the Coping with Stress Course, devised by Albano et al. (1997). Participants progress was monitored and evaluated using qualitative and quantitative measures. The psychoeducational Program was found to be significantly effective in reducing participants depression scores, in reducing their reliance on unproductive means of coping and overall in helping them cope. This article presents the methodology used, key results and discusses the implications of this work for professionals working with adolescents in the area of prevention and coping.Claire Hayes is a clinical and educational psychologist who has recently moved from her post of lecturer in the National University of Ireland Maynooth to develop the Break through Anxiety service as a private practitioner. She received her PhD in Education/Psychology from Dublin City University, Ireland. Her major research interests are in how psychological theories, such as cognitive behavioural theory, can be taught as a means of prevention and copingMark Morgan is Head of Education in St. Patricks College, Drumcondra, Dublin 9, which is part of Dublin City University. He received his PhD in social psychology from the London School of Economics. His research has mainly been in the area of literacy, educational disadvantage and substance use, particularly the evaluation of prevention programmes.  相似文献   
163.
The use of a new technique, Fourier transform infrared (FTIR) chemical imaging, has been demonstrated for the enhancement of latent fingermarks on a number of surfaces. Images of untreated fingermarks on glass backgrounds with excellent ridge detail were acquired using infrared chemical imaging. High quality fingermarks on glass backgrounds were also developed using ethyl cyanoacrylate (super glue) fuming and subsequent infrared chemical imaging. This new method allows the collection of images from backgrounds that traditionally pose problems for current fingermark detection methods. The background may, for example, be highly colored, have a complex pattern, or possess other pattern or image characteristics that make it difficult to separate fingermark ridges using traditional optical or luminescent visualization. One background that has proven to be a challenging surface for the development of latent fingermarks is the Australian polymer banknote. To demonstrate the power and applicability of infrared chemical imaging, fingermarks fumed with ethyl cyanoacrylate were successfully imaged from Australian polymer banknotes.  相似文献   
164.
165.
On the heels of widespread patient protection legislation in the states, the managed care industry abandoned or greatly scaled back the core elements of gate-keeping, utilization management, and financial incentives, which are the very targets of this legislation. This article explores whether, and to what extent, the industry's abrupt change in course can be attributed to these laws. Based on extensive interviews with key informants in six representative states, the article concludes that these laws were not the primary driver of changes in managed care practices. However, patient protection laws interacted with other social and market forces, through complex forms of feedback and reinforcement, to bring about more thoroughgoing change than would have otherwise occurred.  相似文献   
166.
167.
168.
Institutional ethics committees remain largely absent from the literature on error reduction and patient safety. In this paper, the author endeavors to fill the gap. As noted in the Hastings Center's recent report, "Promoting Patient Safety," the occurrence of medical error involves complex web of multiple factors. Human misstep is certainly one such factor, but not the only one. This paper builds on the Hastings Center's report in arguing that institutional ethics committees ought to play an integral role in the transformation of a "culture of blame" to a "culture of safety" in healthcare delivery.  相似文献   
169.
170.
A controlled laboratory experiment is described, in principle and practice, which can be used for the of determination the rate of tissue decomposition in soil. By way of example, an experiment was conducted to determine the effect of temperature (12 degrees, 22 degrees C) on the aerobic decomposition of skeletal muscle tissue (Organic Texel x Suffolk lamb (Ovis aries)) in a sandy loam soil. Measurements of decomposition processes included muscle tissue mass loss, microbial CO2 respiration, and muscle tissue carbon (C) and nitrogen (N). Muscle tissue mass loss at 22 degrees C always was greater than at 12 degrees C (p < 0.001). Microbial respiration was greater in samples incubated at 22 degrees C for the initial 21 days of burial (p < 0.01). All buried muscle tissue samples demonstrated changes in C and N content at the end of the experiment. A significant correlation (p < 0.001) was demonstrated between the loss of muscle tissue-derived C (Ct) and microbially-respired C (Cm) demonstrating CO2 respiration may be used to predict mass loss and hence biodegradation. In this experiment Q10 (12 degrees C-22 degrees C) = 2.0. This method is recommended as a useful tool in determing the effect of environmental variables on the rate of decomposition of various tissues and associated materials.  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