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   6094篇
  免费   237篇
各国政治   429篇
工人农民   181篇
世界政治   618篇
外交国际关系   440篇
法律   2555篇
中国政治   50篇
政治理论   1987篇
综合类   71篇
  2023年   41篇
  2022年   26篇
  2021年   54篇
  2020年   103篇
  2019年   149篇
  2018年   166篇
  2017年   194篇
  2016年   199篇
  2015年   115篇
  2014年   172篇
  2013年   1028篇
  2012年   170篇
  2011年   174篇
  2010年   174篇
  2009年   180篇
  2008年   157篇
  2007年   219篇
  2006年   190篇
  2005年   225篇
  2004年   228篇
  2003年   209篇
  2002年   225篇
  2001年   121篇
  2000年   117篇
  1999年   97篇
  1998年   91篇
  1997年   92篇
  1996年   90篇
  1995年   92篇
  1994年   93篇
  1993年   78篇
  1992年   84篇
  1991年   91篇
  1990年   62篇
  1989年   65篇
  1988年   64篇
  1987年   63篇
  1986年   67篇
  1985年   62篇
  1984年   53篇
  1983年   62篇
  1982年   48篇
  1981年   55篇
  1980年   38篇
  1979年   37篇
  1978年   32篇
  1977年   33篇
  1976年   30篇
  1974年   15篇
  1967年   14篇
排序方式: 共有6331条查询结果,搜索用时 15 毫秒
991.
This study focuses on regional entrepreneurial ecosystems and offers a complex model of start-ups, Regional Entrepreneurship and Development Index (REDI) and six domains of the entrepreneurial ecosystem (culture, formal institutions, infrastructure and amenities, IT, Melting Pot and demand). Altogether they capture the contextual features of socioeconomic, institutional and information environment in cities. To explain variations in entrepreneurship in a cross-section of 70 European cities, we utilize exploratory factor analysis and structural equation modelling for regional systems of entrepreneurship using individual perception surveys by Eurostat and the REDI. This study supports policymakers and scholars in development of new policies conducive to regional systems of innovation and entrepreneurship and serves as a basis for future research on urban entrepreneurial ecosystems.  相似文献   
992.
993.
Although the first published use of the term ‘green criminology’ seems to have been made by Lynch (Green criminology. Aldershot, Hampshire, 1990/2006), elements of the analysis and critique represented by the term were established well before this date. There is much criminological engagement with, and analysis of, environmental crime and harm that occurred prior to 1990 that deserves acknowledgement. In this article, we try to illuminate some of the antecedents of green criminology. Proceeding in this way allows us to learn from ‘absences’, i.e. knowledge that existed but has been forgotten. We conclude by referring to green criminology not as an exclusionary label or barrier but as a symbol that guides and inspires the direction of research.  相似文献   
994.
To examine the ability of two forensic units, one high secure and one medium secure, to meet the NICE (National Institute for Health and Care Excellence) standards of care for diabetes. We applied the National Diabetes Audit programme, which uses as standards the NICE guidelines, to assess the quality of care provided for patients in two forensic units. Of the 500 patients, 200 in high secure and 300 in medium secure, 88 (17.6%) had type 2 diabetes. None had Type 1 diabetes. Of those with Type 2 diabetes, the care of 74 (84%) met all 8 NICE recommended standards. Glucose levels were lower in the medium/low secure unit compared to the higher security environment. Whilst achievement of process-based outcomes was higher than those reported nationally, achieving clinical outcomes was more challenging. High-quality diabetic care can be provided for patients in forensic units. Benchmarking physical health outcomes against national criteria in mental health inpatients is a potential method of improving outcomes.  相似文献   
995.
996.
997.

Objectives

Although prisons aspire to rehabilitate offenders, they fail to prepare prisoners for release into our modern digitally sophisticated society. The objectives of the current study were to assess the impact of digital technology on the culture of prisons, and on prisoners’ ability to self-manage their behavior and reoffending.

Method

Using a natural stepped-wedge design, 13 prisons in the UK were examined that had installed self-service technology over a period of 7 years. A longitudinal multi-level model was used to analyze frequencies of disciplinary proceedings within and between the prisons before and after installation. Reoffending was examined in comparison with a control sample. Quantitative results were supported by a prisoner survey and usage data.

Results

Prison disciplinary offenses were significantly reduced over a two-year period, and reoffending in the first year after release was reduced by 5.36% compared to a 0.78% reduction in comparison prisons. The prisoner survey and usage data suggested that prisoners felt much more in control of their lives in prison and much more confident in coping with technology in the outside world.

Conclusions

The changes created by the introduction of digital technology offer the opportunity to make prisons more efficient for staff, and places of improved learning and rehabilitation for prisoners, contributing to a safer society. This study offers an important contribution to the field of corrections, providing the first quantitative assessment of the effect of prisoner self-service technology on prisoner behavior and reoffending.
  相似文献   
998.
Little is known about the adolescent risk factors and young adult health-related outcomes associated with running away from home. We examined these correlates of running away using longitudinal data from 4,329 youth (48% female, 85% white) who were followed from Grade 9 to age 21. Nearly 14% of the sample reported running away in the past year at Grade 10 and/or Grade 11. Controlling for demographics and general delinquency, running away from home was predicted by lack of parental support, school disengagement, greater depressive affect, and heavier substance use at Grade 9. In turn, runaways had higher drug dependence scores and more depressive symptoms at age 21 than non-runaways, even after taking these antecedent risk factors into account. Runaway status did not predict alcohol dependence risk at age 21. Results highlight the importance of substance use and depression, both as factors propelling adolescents to run away and as important long-term consequences of running away.  相似文献   
999.
Although there has been an increasing number of studies that has examined depression among adolescents from immigrant backgrounds, findings have been mixed, with some studies reporting that immigrant status is associated with risk, while others report that immigration status is linked to adequate or positive outcomes. Thus, it is important to explore how underlying predictors contribute to trajectories of depressive symptoms among adolescents from immigrant backgrounds. Using data from a nationally representative Canadian sample (N = 1,060; aged 12 to 23; 48.9% female), this longitudinal study examined the effects of risk and protective factors on trajectories of depressive symptoms using multilevel modeling. Predictors of depressive symptoms tended to be protective and suggest a universal positive influence of self-esteem, positive peer relationships, and parent–child cohesion. Host language proficiency was predictive of greater increases in depressive symptoms over time. Findings highlight the value of promoting protective factors and aspects of one’s heritage among immigrant adolescents.  相似文献   
1000.
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