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   516篇
  免费   25篇
各国政治   17篇
工人农民   70篇
世界政治   51篇
外交国际关系   107篇
法律   212篇
中国政治   5篇
政治理论   79篇
  2023年   4篇
  2021年   2篇
  2020年   7篇
  2019年   8篇
  2018年   15篇
  2017年   11篇
  2016年   17篇
  2015年   11篇
  2014年   10篇
  2013年   67篇
  2012年   15篇
  2011年   22篇
  2010年   14篇
  2009年   18篇
  2008年   26篇
  2007年   43篇
  2006年   35篇
  2005年   26篇
  2004年   24篇
  2003年   18篇
  2002年   18篇
  2001年   7篇
  2000年   13篇
  1999年   7篇
  1998年   7篇
  1997年   7篇
  1996年   7篇
  1995年   5篇
  1994年   6篇
  1993年   10篇
  1992年   9篇
  1991年   4篇
  1990年   7篇
  1989年   2篇
  1988年   3篇
  1987年   3篇
  1986年   1篇
  1985年   5篇
  1984年   2篇
  1983年   2篇
  1982年   2篇
  1981年   8篇
  1980年   1篇
  1979年   4篇
  1978年   3篇
  1977年   1篇
  1974年   1篇
  1973年   3篇
排序方式: 共有541条查询结果,搜索用时 15 毫秒
371.
The article describes characteristics of pregnant women presenting to the Emergency Department (ED) who are experiencing current violence and presented a screening tool to identify pregnant women experiencing violence. Women completed an in-person interview regarding violence, sociodemo-graphic factors, health status, and drug use. Fifteen percent of women reported at least one episode of violence during the pregnancy. Young age (OR = 3.37, 95% CI: 1.79-6.36), current alcohol use (OR = 1.53, 95% CI: 1.06-2.19), current marijuana use (OR = 1.96, 95% CI: 1.32-2.92), less than a high school education (OR = 1.46, 95% CI: 1.01-2.12), and a prior diagnosis of trichomonas (OR = 1.81, 95% CI: 1.20-2.72) were significantly related to experiencing current violence. Screening patients using these five characteristics identified 8 out of 10 women reporting violence (sensitivity = 75.6%). These results identify a set of predictors that may be helpful in identifying pregnant women who are experiencing current domestic violence.  相似文献   
372.
Middle school students’ experiences at after-school programs were compared as they participated in different types of activities and with different social partners. The students (N = 165) attended eight programs in three Midwestern states. A total of 1,596 experiences were randomly sampled using the Experience Sampling Method (ESM) during 1 week in the fall of 2001 and 1 week in the spring of 2002. Student engagement was conceptualized as the simultaneous experience of concentration, interest, and enjoyment. Students reported high levels of engagement while participating in sports activities and arts enrichment activities at the after-school programs, and low levels of engagement while completing homework at programs. They reported being more engaged in activities involving both adults and peers than activities with peers only. Concentrated effort, intrinsic motivation, and positive and negative mood states were also compared by program activities and social partners. Findings about participants’ subjective experiences and engagement in specific program activities have implications for understanding after-school programs as a context for youth development.
Deborah Lowe VandellEmail:

David J. Shernoff   is an assistant professor of educational psychology at Northern Illinois University broadly interested the relationship between human development and education. He completed his doctoral studies at the University of Chicago and the Sloan Center for Working Families, where he applied Mihaly Csikszentmihalyi’s theory of flow and Experience Sampling Method (ESM) to the study of engaging educational contexts. From 2000 to 2003, he served as a post-doctoral fellow at the University of Wisconsin, Madison. His recent publications include “Student engagement in high school classrooms from the perspective of flow theory” in School Psychology Quarterly, 18, 158–76 (with M. Csikszentmihalyi, B. Schneider, and E. S. Shernoff 2003). Deborah Lowe Vandell   is the Chair of the Department of Education at the University of California, Irvine where she holds a joint appointment in the Department of Psychology and Social Behavior. Prior to these appointments, Professor Vandell was the Sears Bascom Professor of Education at the University of Wisconsin, Madison where she held appointments in Educational Psychology, Human Development and Family Studies, and Psychology. Professor Vandell is principle investigator of several multi-site studies examining child care, family, and after-school experiences. The author of more than 130 articles, Dr. Vandell’s research has focused on the effects of developmental contexts (early child care, schools, after-school programs, families, neighborhoods) on children’s social, behavioral, and academic functioning.  相似文献   
373.
374.
Despite the apparent role alcohol plays in criminal offences, there is at present no evidence available as to the extent of the problem of intoxicated witnesses within England. To address this lack of research, police officers from seven constabularies completed an online survey addressing issues such as the prevalence of intoxicated witnesses, how officers determine intoxication, the procedures employed and their effectiveness. Officers indicated that intoxicated witnesses were a common, to very common, occurrence with most officers determining intoxication through physical symptoms and the witness’s own admission. In terms of interviewing witnesses, the majority of officers indicated that initial details were taken whilst witnesses were intoxicated, but the evidential interview was taken when sober. Officers also indicated that if the witness was intoxicated then the case was less likely to proceed to court and that officers viewed the witness as less accurate. These findings are considered from a criminal justice perspective and discussed in relation to future research.  相似文献   
375.
We present a study of 102 Sudden Infant Death Syndrome (SIDS) deaths using a retrospective review of medical examiner autopsy reports. The prevalence of sleep related risk factors with regards to sleep surface, sleep position, and co-sleeping were determined in a population of infants less than 1-year-old. Of the 102 SIDS deaths, 67 (65.7%) were not in a crib, 63 (61.8%) were prone, and 48 (47.1%) were co-sleeping. However, 94 (92.2%) of these deaths had at least one risk factor present. Only 8 (7.8%) infants had slept alone, in a crib or bassinet, and on their back or side. Infants less than 4-months-old had a higher rate of co-sleeping (54.7%) than the older infants (25.9%), and a higher frequency of heart malformations at post-mortem examination. The older infants were more likely to exhibit pulmonary and tracheal inflammation, and neuropathology.  相似文献   
376.
The purpose of this study was to determine the precision and accuracy of facial soft tissue measurement using personal computer (PC)-based multiplanar reconstructed (MPR) computed tomography (CT) images and to evaluate the effect of the various CT scanning protocols on the facial soft tissue thickness measurement. Thirteen different CT imaging protocols were used to image a cadaver head. MPR reformations and three-dimensional (3D) reconstructions viewed on a laptop PC were used to make measurements at six specific sites on each set of images. These measurements were compared to physical measurements at the same sites. Increasing the slice thickness resulted in decreased image quality. Within the same slice thickness, increasing the pitch ratio in the spiral mode, resulted in decreasing image quality. The image quality of conventional CT scanning was relatively poorer than that of the spiral CT scanning. However, the mean deviation from the physical measurement was within 0.43 mm in every instance. This mean deviation was quite small and clinically acceptable for measuring the soft tissue thickness of the facial area. PC-based MPR CT images of the face using routine scanning CT protocols can be used to accurately measure soft tissue thickness in the facial region. However, for more fine and accurate data collection, scanning protocols with slice thicknesses less than 5mm, and a spiral/helical mode pitch less than 2:1 are recommended.  相似文献   
377.
For several decades, we have witnessed a surge in public policies aimed at ending child maltreatment, youth violence, and adult domestic violence. Commensurate with this increased interest has been a growing body of research on each issue's etiology, affected population, and the public policy and prevention impacts. Even a cursory review of the literature suggests a number of commonalities across these forms of violence. As such, it seems timely and prudent to craft a research framework that facilitates the identification and dissemination of practice and policy innovations that can address all three concerns. This article articulates an overarching framework to guide researchers in better identifying common avenues of study. After summarizing the commonalities found across the three areas, the authors identify cross-cutting issues that have particular relevance for advancing our understanding of violence and its effects on personal and social interactions.  相似文献   
378.
Planned parenthood within the international lesbian and gay communities has attracted considerable attention and controversy in the past decade. On 5 April 2002, Guest J of the Family Court of Australia acknowledged a lesbian couple as resident parents of 2-year-old 'Patrick'. This judgement was remarkable in that it signalled a break with the well-documented international legal non-recognition of lesbian non-biological parents. However, the judgement was actually a loss for the two women, who had initiated legal proceedings in a bid to have the biological father's contact visits with the child reduced. Contrary to their wishes, the biological father was awarded increased contact and a notion of 'father' was separated in law from 'parent.' In this article, via analysis of the judgement, several issues are examined. First, one dilemma Guest J was faced with was: are the best interests of a child in a lesbian-parented family served by recognizing a father as a means for a child to make sense of his biological origins, or, by allowing the child to form and maintain a 'father-like' social relationship? This dilemma made visible the somewhat arbitrary and subjective nature of the 'best interests' standard when it comes to deciding between characterizations of paternity that recognize the symbolism of biological connections versus those that recognize the blood tie as grounds for a regular paternal social relationship. In the absence of an obvious 'best interests' conclusion, the judge found himself in the difficult position of assessing both the original terms or intent of the parental agreement between the parties and the quality of the existing social relationship between biological father and child. It is argued that his assessment of both issues was, at times, coloured by an unsubstantiated assumption that the lesbian parents' concept of kinship was irrational. The 'Patrick' case also indicated the extent to which lesbians and gay men may have entirely different expectations and understandings of 'known donor' relationships. This finding is contextualized within broader historical and political developments within lesbian and gay cultures. The author's conclusion is that there is a pressing need for legislative, policy and community-based initiatives to guide and assist individuals who identify with these communities in the task of bringing children into the world.  相似文献   
379.
The interest in results‐based policy formulation requires us to examine the impact of evaluations. This article focuses on the production and use of impact evaluations of UK active labour market programmes. It is intended to be useful for non‐evaluators and for those working in developing and transition countries. The UK provides a case study where there is good evaluation data, available expertise and high‐level political commitment to evaluation. However, obstacles remain in the generation and use of impact data. The article seeks to identify the opportunities and difficulties faced in the UK, and it considers the implications for other countries. It suggests that the measurement of impact concepts will prove difficult in countries that do not have sound administrative data, comprehensive labour market statistics and well‐established macroeconomic and tax‐benefit models. Furthermore, the use of evaluation data may be limited by a range of factors, most crucially those emanating from the legislative and policy‐making environment. The conclusion is that if knowledge‐based policy management is to be improved, changes in evaluation methodology will only be effective if supported by changes in the wider government environment. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
380.
This study examined the link between rejection sensitivity, self-silencing behaviors, and depressive symptomatology among adolescent dating couples. Self-silencing was hypothesized to be the process mediating the association between rejection sensitivity and depressive symptoms. Our sample included 211 couples between 14 and 21 who were dating at least 4 weeks. Results indicated that dating adolescents who were sensitive to rejection reported more depressive symptomatology and higher levels of self-silencing behaviors within their romantic relationship compared to dating adolescents who were not so sensitive to rejection. Self-silencing was identified as a partial mediator of the association between rejection sensitivity and depressive symptomatology among dating adolescents. Clinical implications in light of these findings are discussed.
Melinda S. Harper (Assistant professor)Email:
  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