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   8472篇
  免费   500篇
各国政治   396篇
工人农民   280篇
世界政治   583篇
外交国际关系   309篇
法律   5664篇
中国共产党   1篇
中国政治   80篇
政治理论   1615篇
综合类   44篇
  2020年   176篇
  2019年   186篇
  2018年   220篇
  2017年   261篇
  2016年   252篇
  2015年   222篇
  2014年   228篇
  2013年   949篇
  2012年   194篇
  2011年   227篇
  2010年   242篇
  2009年   253篇
  2008年   214篇
  2007年   211篇
  2006年   229篇
  2005年   212篇
  2004年   230篇
  2003年   207篇
  2002年   165篇
  2001年   328篇
  2000年   266篇
  1999年   243篇
  1998年   113篇
  1997年   77篇
  1996年   80篇
  1995年   95篇
  1994年   107篇
  1993年   103篇
  1992年   162篇
  1991年   167篇
  1990年   154篇
  1989年   168篇
  1988年   136篇
  1987年   151篇
  1986年   130篇
  1985年   147篇
  1984年   109篇
  1983年   129篇
  1982年   94篇
  1981年   86篇
  1980年   58篇
  1979年   118篇
  1978年   82篇
  1977年   67篇
  1976年   61篇
  1975年   60篇
  1974年   66篇
  1973年   63篇
  1972年   54篇
  1968年   42篇
排序方式: 共有8972条查询结果,搜索用时 15 毫秒
261.
262.
263.
An institution that has shown great promise in addressing the revitalization of declining central cities is Business Improvement Districts (BIDs). These private governments provide supplemental municipal services such as sanitation, security, and marketing to independent businesses in underserved commercial areas. By 1999, 44 U.S. states had legislation that enables and dictates the formation process and structure of BIDs. The surprising element of this legislation is the wide variation in approval needed to form a BID over a proposed geographical area. Some states require as little as 20 percent approval of proposed members and others as much as 75 percent approval to allow formation of a BID. This variation in state statutes likely influences the use of BIDs. Results highlight that relatively easier state enabled collective action positively impacts the creation of BIDs, the limited effects of tax expenditure limitations on the formation of BIDs and the positive impacts that new development has on the number of BIDs per state.  相似文献   
264.
This paper examines the long‐term effect of project‐based housing assistance—public housing and private assisted housing—on work, earnings, and welfare receipt. We use the Panel Study of Income Dynamics–Assisted Housing Database to identify women ever living in project‐based assisted housing and to create comparison groups using propensity scores. Analyses show no evidence that moving into this type of assisted housing is associated with sustained reductions in employment rates, work hours, or earnings. Although welfare rates decline, they remain higher for assisted housing recipients compared with nonrecipients. Overall, these findings align with those of recent experimental and nonexperimental studies that include other forms of housing assistance and cover different time periods. © 2009 by the Association for Public Policy Analysis and Management.  相似文献   
265.
Milton J  Ferguson B  Mills T 《危机》1999,20(4):171-177
General practitioners (GPs) are assumed to occupy an important position in the prevention of suicide through the introduction of risk assessment techniques commonly used in psychiatric practice. Despite this theoretical role for primary care services, it remains unclear how frequently GPs implement risk assessment in patients who may be vulnerable to suicide. To address this, a retrospective survey of probable suicides was conducted within a primary care setting utilizing a questionnaire of GPs who had experienced a patient suicide and was augmented by hospital and coroners' records. 85% of questionnaires were returned and 61 deaths were adjudged as suicides during the year long census period. 75% of suicides were male and 54% were aged under 35.28% were in contact with psychiatric services prior to death, although 60% had some diagnosis of mental disorder. GPs had little knowledge of a patient's life circumstances in up to half of cases. Recording of risk assessment occurred in 38% of subjects, was positively associated with prior psychiatric contact (p = 0.001) but negatively associated with presence of physical illness (p = 0.004), older patient age (p = 0.04), and GPs length in practice (p = 0.05). One GP felt their suicide case was preventable. The low rate of risk assessment and limited knowledge of patient lifestyle point to the need for active engagement of GPs in future suicide prevention strategies and should influence the content of training programs in primary care.  相似文献   
266.
Sixty years after its publication, Michael Young’s The Rise of the Meritocracy remains one of the most important texts for understanding the changing intellectual politics of postwar Britain. Young’s fictional vision of a meritocratic society explores the consequences of a society where each citizen is judged according to the formula ‘I.Q. + Effort = Merit’. The successful meritocrats hoard ever-greater rewards for themselves, crystallising into a rigid and repressive elite who rule over an increasingly powerless and depressed underclass. While the concept has evolved and adapted, the language of meritocracy is one of the great survivors of postwar British politics. In an age characterised by the rise of populist leaders and movements, as well as a backlash against educated ‘liberal elites’, revisiting, reinterpreting and re-evaluating Young’s influential satire and the central place the concept of meritocracy occupies in the history of postwar Britain has never been more important.  相似文献   
267.
268.
Two challenges stand out in the study of deliberation: the development of appropriate methodological tools and the development of more unified analytical frameworks. On the one hand, analysing deliberative processes is demanding and time‐consuming; hence we tend to have only few and non‐randomly selected cases at the group or context level. In addition, the real world of deliberation presents us with a complex matrix of nested, cross‐classified, and repeated speakers. This article shows that Bayesian multi‐level modelling provides an elegant way to tackle these methodological problems. On the other hand, we attempt to enrich comparative institutionalism with individual characteristics and psychologically relevant variables (such as group composition). Focusing on Swiss and German parliamentary debates we show that institutional factors ‐ in particular, consensus systems ‐, the gender composition of committees and plenary sessions, and age matter for the quality of deliberation. Furthermore, we also show that partisan affiliation ‐ government or opposition status of MPs ‐ affects deliberative quality and can refine institutional arguments. We conclude that a multi‐level approach to deliberation focusing on contextual and actor‐related characteristics and using Bayesian hierarchical modelling paves the way toward a more advanced understanding ‐ and methodological handling ‐ of deliberative processes.  相似文献   
269.
The transition to high school has been identified as a potentially difficult time in adolescents’ lives. Reductions in both academic and social functioning often accompany this transition. While these effects have been documented in urban youth, the move to high school has not been extensively studied in rural minority youth. Toward that end, the academic grades and substance use in ninth grade of 447 (184 male and 263 female) African-American adolescents from two rural counties in a state in the deep South were examined in relation to configurations of adaptation from sixth through eighth grade. Results indicate that individual with consistently positive patterns across middle school had higher grades and lower rates of substance use compared to individuals with persistent difficulties or those that transitioned to problem behavior. Many individuals who improved in their patterns of adaptation had relatively high grades, but also rather high rates of substance use in the ninth grade. David B. Estell is an assistant professor of educational psychology at Indiana University Bloomington. He received his PhD in Developmental Psychology from the University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression. Thomas W. Farmer is an associate professor of education at Pennsylvania State University and director of the National Research Center on Rural Education Support. He received his PhD in Special Education from University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression in students with and without special needs. Matthew J. Irvin is a research scientist at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He received his PhD in Educational Psychology from the University of North Carolina at Chapel Hill. His major research interests include resilience and student engagement. Jana H. Thompson is a research associate at the Center for Developmental Science at the University of North Carolina at Chapel Hill. Her research interests include peer social relations and developmental transitions into early adolescence. Bryan C. Hutchins is a research assistant at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He is also a graduate student in the Educational Psychology, Measurement, and Evaluation Program at UNC. His research interests include child and adolescent social development and school based emotional and behavioral interventions and prevention programs. Erin M. McDonough is currently a doctoral candidate in School Psychology at the University of North Carolina at Chapel Hill. She received her Bachelor of Arts degree in Psychology from Emory University. As a research assistant at the Center for Developmental Science, she has been able to explore her interests in student achievement as well as rural education. Another major research interest of hers is school-based mental health.  相似文献   
270.
This research examined the “mental health literacy” of adolescents concerning eating-disordered behavior. A vignette describing a fictional 16-year old female meeting diagnostic criteria for bulimia nervosa was presented to 522 female high school students, followed by a series of questions concerning treatment of and treatment-seeking for the problem described. Results indicated that primary care practitioners, mothers and close female friends were most highly regarded as potential sources of help. Self-help interventions, including the use of vitamins and minerals, were also highly regarded, whereas participants were less positive about the benefits of mental health specialists and ambivalent about the use of anti-depressant medication. Most participants believed that the problem described would be difficult to treat, and that relapse was likely even given appropriate treatment. An additional finding of note was that among participants with a high level of eating disorder symptoms (n=36, 6.9%), recognition of an eating problem was poor. We conclude that beliefs likely to be conducive to low and/or inappropriate treatment-seeking for eating problems may be common among adolescent girls. In addition, the findings suggest that prevention programs for the eating disorders need to target not only at-risk individuals, but also individuals in their immediate social environment.  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