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   752篇
  免费   25篇
各国政治   43篇
工人农民   113篇
世界政治   79篇
外交国际关系   40篇
法律   359篇
中国政治   8篇
政治理论   129篇
综合类   6篇
  2023年   9篇
  2022年   3篇
  2021年   5篇
  2020年   16篇
  2019年   31篇
  2018年   17篇
  2017年   39篇
  2016年   40篇
  2015年   27篇
  2014年   26篇
  2013年   131篇
  2012年   24篇
  2011年   33篇
  2010年   22篇
  2009年   24篇
  2008年   36篇
  2007年   19篇
  2006年   20篇
  2005年   35篇
  2004年   25篇
  2003年   12篇
  2002年   17篇
  2001年   7篇
  2000年   9篇
  1999年   12篇
  1998年   13篇
  1997年   9篇
  1996年   12篇
  1995年   9篇
  1994年   11篇
  1993年   10篇
  1992年   10篇
  1991年   6篇
  1990年   6篇
  1989年   7篇
  1988年   6篇
  1987年   4篇
  1986年   2篇
  1985年   8篇
  1984年   2篇
  1983年   5篇
  1982年   2篇
  1981年   2篇
  1978年   1篇
  1977年   1篇
  1976年   4篇
  1973年   2篇
  1969年   1篇
  1966年   1篇
  1965年   1篇
排序方式: 共有777条查询结果,搜索用时 15 毫秒
111.
Courts have recently clarified some aspects of the Digital Millennium Copyright Act safe harbor system, yet other aspects remain hazy. In this haze, ISPs are incentivized to over-block content, and copyright holders are allowed to give a narrow, subjective reading of a user’s fair use. Subjectively, copyright holders can, in good faith, hold objectively unreasonable views about fair use. The asymmetry between copyright holders’ rights and remedies and users’ rights and remedies threatens socially valuable speech and creates a chilling effect. And the risk of extra-judicial termination of Internet access under a vague and variable repeat infringers policies threatens fundamental First Amendment interests. Policy changes are proposed to harness fair use considerations to protect First Amendment interests in the digital sphere. The calculus and consequence for sending takedown notices should be recalibrated. By curbing copyright overreach and minimizing the chilling effect, the potential for robust exchanges over new communication technologies can be realized.  相似文献   
112.
The Public Perceptions of Child Welfare Scale measures how the social environment influences child welfare workers, including their job satisfaction and intent to leave. Psychometric studies have validated the scale for private child welfare workers, but there are no validation studies with public agency staff. This study fills that gap, showing stigma and respect are important constructs that also predict worker intent to leave. This research found an additional construct, blame, which was not present in private worker validation studies. The scale provides an important tool for the field as we continue to build evidence for effective recruitment and retention.  相似文献   
113.
In forensic DNA casework, the interpretation of an evidentiary profile may be dependent upon the assumption on the number of individuals from whom the evidence arose. Three methods of inferring the number of contributors—NOCIt, maximum likelihood estimator, and maximum allele count, were evaluated using 100 test samples consisting of one to five contributors and 0.5–0.016 ng template DNA amplified with Identifiler® Plus and PowerPlex® 16 HS. Results indicate that NOCIt was the most accurate method of the three, requiring 0.07 ng template DNA from any one contributor to consistently estimate the true number of contributors. Additionally, NOCIt returned repeatable results for 91% of samples analyzed in quintuplicate, while 50 single‐source standards proved sufficient to calibrate the software. The data indicate that computational methods that employ a quantitative, probabilistic approach provide improved accuracy and additional pertinent information such as the uncertainty associated with the inferred number of contributors.  相似文献   
114.
Family form sets the stage for a host of adolescent behavioral outcomes. We draw on research, theory, and methodology from within Criminology, Demography, and Family Sociology to examines the effect of variation in intact family form on antisocial and deviant behavior. We find higher antisocial and deviant behavior among youth residing in households where one of the parents has a child from a previous relationship and the parents are currently married but were cohabiting at the time of the birth of their eldest child.  相似文献   
115.
Our aim was to investigate whether early detection was feasible in prison and whether it could improve mental health outcomes in young prisoners. A secondary aim was to explore whether it can reduce returns to prison. Between 2011 and 2014, a total of 2115 young prisoners were screened, 94 (4.4%) met criteria for ultra-high risk for psychosis and were offered an intervention, 52 actually received it. Return to prison data were sought on the 52 participants, receiving a formal intervention. Of the 52 prisoners who received an intervention, 30.8% returned to custody compared to national average reconviction rates of between 45.4 and 66.5%. Our results suggest that early detection is a feasible option in a prison setting, improving mental health outcomes and reducing returns to prison. Mental health outcomes were recorded for a sub-sample of those receiving the intervention. The results indicated statistically significant improvements on measures of depression, anxiety and psychological distress.  相似文献   
116.
Women were central to the provision of welfare services in France during the refugee crises of the late 1930s. By building on the services created during the First World War, women, as either volunteers or professionals, actively cared for refugees and others during the Spanish Civil War (1936-39), the phoney war (September 1939-May 1940) and the German invasion of 1940. French women's involvement with refugee aid enabled them to develop a sense of autonomous civil and political activism, especially—although not exclusively—in their work with the French Red Cross. In addition, the history of welfare activities for refugees illuminates how ordinary people dealt with the extraordinary circumstances of war, invasion and the forced movement of populations.  相似文献   
117.
Despite the growing research in the area of stalking, the focus has been on adults who engage in this behavior. Unfortunately, almost no studies investigate the prevalence of this behavior in adolescents. Two cases are presented demonstrating not only that stalking occurs during the period of adolescence, but also that there is a significant difference in the motivation underlying this behavior that can be classified similarly to that of adult stalkers. Further, a suggested classification based on these two cases as well as our experience with other juveniles who have exhibited stalking behaviors is proposed. The first case involves a narcissistic youth who also possesses psychopathic traits, while the second involves a lonely, severely socially awkward teen. Juvenile stalking is a societal problem that has not yet garnered the attention it deserves, and all systems that deal with juvenile delinquency (juvenile court, law enforcement, and mental health personnel) as well as the school system must be educated to the prevalence and severity of this yet-to-be-recognized problem.  相似文献   
118.
On September 10, 2003, Anna Lindh, the Swedish Minister for Foreign Affairs, was assassinated. The offender, a 24-year-old man, was a socially isolated, culturally and familially dislocated, yet academically quite competent young man who became enthralled with the habitual criminality of some of his relatives and their associates, and then psychiatrically decompensated in his early twenties. He had a history of serious violence before the crime, including the gross assault with a knife of his alcoholic and abusive father when he was 17, stalking, and extortion. At least a year prior to the assassination, he confided to a friend his desire to attack someone famous in front of many people. A definitive motive for the crime was not possible to establish. This was an act of intended, yet opportunistic violence toward a national political figure. The dynamics of the case are placed in the context of other attacks on Western European and U.S. politicians.  相似文献   
119.
Blood was available for the estimation of carboxyhemoglobin saturation (COHb) in 30 of the 173 persons who died in the Victorian bushfires in February 2009. The ages of these 30 deaths ranged from 3 to 80 years and there were 8 females. 13 cases (43%) were considered negative (less than 5% COHb), 12 (40%) were between 5 and 40% COHb, 2 (6.7%) between 40 and 50% and 3 (10%) were greater than 50% COHb. There were 6 persons either found within a building or a car and the COHb in these cases ranged up to 69% (mean 50%). There were 5 cases where the location was unable to be determined as either indoor or outdoor due to the extensive nature of the fire. The remaining 19 deceased persons were all located outside in the open and the concentration of COHb in these cases ranged up to 30% (mean 19%). Hydrogen cyanide was only detected in two deceased persons at concentrations of 0.5 and 2.7 mg/L, respectively. 13 deceased were found to have soot in the airways following necropsy but this did not correlate with the COHb levels.  相似文献   
120.
Increasing politicization in EU member states about European issues can be expected to strengthen the impact of attitudes towards Europe on vote choice in European Parliament (EP) elections. At the same time this impact is likely to vary between voters and contexts as a function of political information. This study explores the role of political information in explaining individual and contextual heterogeneity in the degree of EU issue voting. Using a two-step hierarchical estimation procedure to explore both individual and contextual variation, we show that while EU issue voting in the 2009 EP elections is only slightly more pronounced among the politically sophisticated, it is clearly more extensive in contexts that provide higher levels of political information on European matters.  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