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   5783篇
  免费   135篇
各国政治   264篇
工人农民   225篇
世界政治   460篇
外交国际关系   216篇
法律   3595篇
中国政治   52篇
政治理论   1089篇
综合类   17篇
  2021年   42篇
  2020年   69篇
  2019年   103篇
  2018年   133篇
  2017年   117篇
  2016年   120篇
  2015年   70篇
  2014年   119篇
  2013年   591篇
  2012年   143篇
  2011年   153篇
  2010年   122篇
  2009年   139篇
  2008年   169篇
  2007年   157篇
  2006年   142篇
  2005年   131篇
  2004年   156篇
  2003年   123篇
  2002年   101篇
  2001年   310篇
  2000年   278篇
  1999年   193篇
  1998年   80篇
  1997年   84篇
  1996年   54篇
  1995年   59篇
  1994年   51篇
  1993年   41篇
  1992年   126篇
  1991年   140篇
  1990年   133篇
  1989年   130篇
  1988年   113篇
  1987年   125篇
  1986年   100篇
  1985年   95篇
  1984年   97篇
  1983年   83篇
  1982年   58篇
  1981年   74篇
  1980年   34篇
  1979年   73篇
  1978年   43篇
  1975年   37篇
  1974年   49篇
  1973年   54篇
  1972年   39篇
  1971年   34篇
  1970年   29篇
排序方式: 共有5918条查询结果,搜索用时 15 毫秒
991.
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   
992.
Prevalence of tricyclic antidepressants (TCAs) has not been explored in pilots. The National Transportation Safety Board (NTSB) aviation accident and the Federal Aviation Administration's Civil Aerospace Medical Institute (CAMI) toxicology and medical certification databases were searched for pilots fatally injured in aviation accidents. During 1990–2012, CAMI received bio‐samples of pilots from 7037 aviation accidents. Of these, 2644 cases were positive for drugs. TCAs were present in 31. TCA blood concentrations ranged from therapeutic to toxic levels. The NTSB determined that the use of drugs and ethanol as the probable cause or contributing factor in 35% (11 of 31) of the accidents. None of the 31 pilots reported the use of TCAs during their aviation medical examination. The prevalence of TCAs in aviators was less than 0.5% (31 of 7037 cases). There is a need for aviators to fully disclose the use of medications at the time of their medical examination.  相似文献   
993.
Peripartum psychosis is a rare but serious psychiatric disorder characterized by the presence of a mood episode with psychotic features. Although controversy surrounds the nosological status of peripartum mental disorders, these conditions continue to be of exceptional interest to the medical and forensic mental health communities. The aim of this study was to report a rare case of prepartum psychosis which escalated to the endpoint of neonaticide and summarize literature on peripartum mental disorders and infanticide. A 30‐year‐old mother murdered her newborn with the spike of her serum delivery system and planned to commit suicide while in hospital after hallucinating due to an acute puerperal psychotic disorder with a prepartum onset and postpartum deterioration. Her disorder was not managed until neonaticide. Throughout this paper, the significance of a multidisciplinary approach for the optimal management of these incidents is highlighted and diagnostic as well as therapeutic issues are addressed.  相似文献   
994.
How do interest groups influence U.S. Supreme Court justices to vote in favor of their preferred outcomes? Following prior research on the influence of the Solicitor General, we develop and expand on the signaling theory of interest group influence via amicus curie briefs. We argue that an interest group's ideological reputation and the nature of the ideological signal it sends in its brief both function as powerful heuristics that convey information to the justices depending on the justices' own ideological preferences. When an organization files an amicus brief advocating for an outcome seemingly contrary to its traditional preferences (i.e., an unexpected signal), this signal should be more noticeable and credible than a signal in accordance with a group's conventional views (i.e., an expected signal). However, unexpected signals should have greater influence on justices who share the brief filer's preferences. We test our signaling theory on the terms from 1991 through 2002. We find that unexpected signals (but not expected signals) are associated with Supreme Court voting, and the influence of unexpected signals appears to be particularly strong among justices who share the ideological preferences of the brief filer.  相似文献   
995.
In International Energy Group v Zurich Insurance, the Supreme Court considered the implications of the special rule in Fairchild v Glenhaven Funeral Services Ltd for insurers’ for employers’ liability. The question for the Court was whether, in the light of its earlier decision in Durham v BAI (Run off) Ltd, insurers could be held liable for employees’ mesothelioma claims, even if the employer was not insured throughout the period of employment. The seven Justices unanimously held that insurers’ liability was proportionate to the period of insurance. In reaching that result, the majority recognised that the insurers were entitled to ‘equitable recoupment’ from insured‐employers in respect of periods during which they were uninsured. This note critiques the recoupment right with an unjust enrichment lens.  相似文献   
996.
997.
998.
Rejection sensitivity (RS) refers to the tendency to anxiously expect, readily perceive, and overreact to experiences of possible rejection. RS is a clear risk factor for psychological maladaptation during early adolescence. However, there is growing evidence of significant heterogeneity in the psychological correlates of RS. To investigate when RS poses the greatest psychological risk during early adolescence, this study examines mutual best friendship involvement (or lack thereof) and the best friends?? RS as potential moderators of the associations between RS and psychological difficulties. Participants were 150 7th grade students (58 boys; M age = 13.05 years) who nominated their best friends, and reported on their RS, social anxiety, and self-esteem. Results from a series of hierarchical multiple regression analyses indicated that mutual best friendship involvement and best friends?? RS were both significant moderators when fear of negative evaluation (a type of social anxiety) served as the dependent variable. The association between RS and fear of negative evaluation was stronger for adolescents without mutual best friends than adolescents with mutual best friends. In addition, the association between RS and fear of negative evaluation was the strongest for adolescents whose best friends were highly rejection sensitive (relative to adolescents whose best friends were moderately or low in RS). Findings highlight the importance of considering best friendships in studies of RS and strongly suggest that, although having mutual best friendships may be protective for rejection sensitive adolescents, having a rejection sensitive best friend may exacerbate difficulties. The significance of friends in the lives of rejection sensitive adolescents is discussed as well as possible applied implications of the findings and study limitations.  相似文献   
999.
Lavrentii Beria built up one of the most powerful patronage networks in Soviet history. Its success represents a unique case in Soviet history in which a regionally based secret police patron-client network, comprised primarily of representatives of ethnic minorities, took control first of the civilian leadership of one of the major regions of the Union, and then of the most powerful institution in the USSR, the national secret police, and subsequently became one of the main competing factions in the “crypto-politics” of the late-Stalin era. The fact that the Beria network emerged from the secret police gave it certain advantages in the political struggles of the period, but it also held weaknesses that played a role in Beria’s final undoing. The evolution and political struggles of Beria’s network also shed light on the inner workings of the competition among informal networks that made up the crypto-politics of the period. Using recent memoirs, new archival sources and interviews, this article will examine how Beria developed, managed and advanced his informal network, giving particular attention to the specific and unique outcomes that resulted from the rooting of this network in the secret police, at five critical junctures in Beria’s career.  相似文献   
1000.
This study examined reciprocal relationships between adolescents’ perceptions of parental nurturance and two types of adolescent aggressive behaviors (indirect and direct aggression) using a transactional model. Three waves of longitudinal data were drawn from the Canadian National Longitudinal Survey of Children and Youth. The sample included 1,416 (735 female) adolescents who were 10- and 11-year-olds at Time 1 and became 14-and 15-year-olds at Time 3. The findings failed to support reciprocal effects, but confirmed parental effects at different ages for girls and boys. For girls, perceptions of parental nurturance at age 10 were negatively associated with both indirect and direct aggression at age 12. For boys, perceptions of parental nurturance at age 12 were negatively associated with both aggressive behaviors at age 14. Future research should continue to investigate reciprocal effects in parent-adolescent relationships to identify developmental periods where the effect of adolescents’ or their parents’ behavior may be stronger.  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