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   5671篇
  免费   241篇
各国政治   257篇
工人农民   202篇
世界政治   384篇
外交国际关系   255篇
法律   3493篇
中国政治   45篇
政治理论   1238篇
综合类   38篇
  2023年   35篇
  2022年   37篇
  2021年   48篇
  2020年   111篇
  2019年   115篇
  2018年   150篇
  2017年   202篇
  2016年   174篇
  2015年   133篇
  2014年   141篇
  2013年   517篇
  2012年   171篇
  2011年   184篇
  2010年   151篇
  2009年   156篇
  2008年   191篇
  2007年   156篇
  2006年   172篇
  2005年   150篇
  2004年   156篇
  2003年   141篇
  2002年   142篇
  2001年   223篇
  2000年   164篇
  1999年   133篇
  1998年   67篇
  1997年   61篇
  1996年   56篇
  1995年   75篇
  1994年   62篇
  1993年   68篇
  1992年   96篇
  1991年   108篇
  1990年   94篇
  1989年   76篇
  1988年   96篇
  1987年   92篇
  1986年   115篇
  1985年   124篇
  1984年   98篇
  1983年   85篇
  1982年   52篇
  1981年   42篇
  1980年   33篇
  1979年   42篇
  1978年   36篇
  1975年   33篇
  1974年   46篇
  1971年   34篇
  1968年   34篇
排序方式: 共有5912条查询结果,搜索用时 15 毫秒
991.
Prison visitation has been widely recognised as an important feature of a just and humane prison system, providing important benefits for prisoners and their family in maintaining ties. However, emphasis on maintaining prisoner–family ties over the sentence has remained a low priority for the prison service in England and Wales, with prison visits ideologically framed as a ‘privilege’ rather than a ‘right’ for prisoners. This paper contrasts England and Wales with Scotland where a diverging approach to supporting visitation and family contact has been implemented. In Scotland, a strong focus on human rights as a justification for these policies has occurred, in tandem with more palatable historical context of penal welfarism. This paper assesses differences between the two governmental approaches to prison visitation, situated in discussion of some of the broader resettlement outcomes which may be garnered via these policy responses.  相似文献   
992.
Relative risks of violence in psychiatric patients are high compared to the general population and existing evidence in non-psychiatric populations may not translate to reductions in violence in psychiatric populations. We searched 10 databases including Medline, EMBASE, CINAHL and Scopus, from inception until August 2015 for systematic reviews and meta-analyses of violence prevention interventions in psychiatry. Reviews were included if they used a hard outcome measure (i.e. police or hospital recorded violence, or reincarceration) and contained randomized or non-randomized controlled studies. Five reviews met our inclusion criteria (n = 8876 patients in total), of which four received a GRADE rating of ‘low’ or ‘very low’. Three randomized studies (n = 636) reported that therapeutic community interventions may reduce reincarceration in drug-using offenders with co-occurring mental illness (‘moderate’ GRADE rating). The lack of intervention research in violence prevention in general and forensic psychiatry suggests that interventions from non-psychiatric populations may need to be relied upon.  相似文献   
993.
Ample research exists on the relationship between mainstream constructions of racialized images and perceptions of criminals. Fewer studies, however, have assessed the influence of political rhetoric in the construction and the mobilization of images of criminals as the “racial other.” This study employs a qualitative content analysis guided by an intersectionality framework to answer the questions: to what extent Presidential rhetoric influenced images of criminals; and how was colorblind language used to facilitate this process? The examination of Presidential speeches related to crime policies, given from 1969 to 1996, revealed that criminal activity was primarily articulated as being committed by “young Black impoverished males.” Through the use of colorblind strategies, race, while not explicitly referenced, was the most salient dimension of the imagery of criminals depicted in Presidential rhetoric.  相似文献   
994.
995.
Supporting the positive development of a special needs child is especially challenging when parents have separated or divorced. Invariably, there is an increased need for collaborative co‐parenting wherein information is shared and intervention plans can be implemented effectively. In this article, the evolving literature on parental gatekeeping is applied to families with special needs children, as it offers a useful model for understanding the strengths and liabilities of co‐parenting relationships. We describe some of the typical and unique gatekeeping dynamics that occur when children suffer from developmental, physical, and/or psychiatric syndromes that require specific treatment and specialized parenting skills. Examples of both restrictive and facilitative gatekeeping are described as they manifest in these families. Implications for decision making are also discussed.  相似文献   
996.
We examined potential predictors of initial court agreement and 1‐year relitigation in a sample of contested paternity cases involving unmarried parents coming to court to establish paternity, child support, and other issues. Cases participated in an RCT of a parent program and of a waiting period between establishment of paternity and court hearing. We controlled for RCT study factors and used baseline assessment data to predict likelihood of reaching full agreement in the initial court hearing and relitigation in the following year. Findings suggest that cases in which parents get along better outside of court are more likely to reach agreement and less likely to return to court. Additionally, particular parent demographics predict lower likelihood of reaching initial agreement (e.g., parents are non‐White, father earns below $10,000 yearly), more relitigation (e.g., parents are non‐White, mother earns above $10,000 yearly, father has children with others), and less relitigation (e.g., father earns above $10,000 yearly). Child demographics and most parent relationship characteristics did not predict outcomes. We discuss findings and offer suggestions for court interventions.  相似文献   
997.
Early sexual behaviors during adolescence have the potential to lead to unhealthy outcomes. This study explored the association between specific dimensions of maternal relationship quality and adolescent sexual debut by age 15. We hypothesized that adolescents who have poor maternal relationships are at greater risk of early sexual debut than those who have a more supportive relationship. These hypotheses were examined using both adolescents’ perception of their maternal relationship quality and observed relationship quality. A sample of 268 adolescents (142 girls; 90% European American) were followed longitudinally from age 13 to age 15. The results indicate that adolescents with sexual debut by age 15 report significantly worse relationships with their mothers compared with other adolescents. Furthermore, behavioral observations of lower maternal support and higher observed displays of externalizing affect towards the mother also were related to early sexual debut. The significance of maternal relationship quality remained after controlling for family structure, race, and socioeconomic status. These findings suggest that mothers have a significant role in the timing of their adolescents’ sexual debut.  相似文献   
998.
One of the most fundamental factors related to psychological well being across the lifespan is whether a person perceives social support from important others in his or her life. The current study explored changes in and relationships among perceived social support (SS) and socioemotional adjustment (SEA) across the 1-year transition from elementary to junior high school. Two cohorts of students (N = 140) participated in the current study that took place across a 3-year time span. Analyses of the transition data for boys and girls together reveal declines in perceived total support and teacher support as well as an increase in self-reported school problems. When considering the sexes separately, girls?? perceived total support, close friend support and school support declined while boy??s self-reported school problems increased across the transition. Although social support did not emerge as a mediator or predictor for any of the socioemotional variables in the current study, results reveal that, in general, perceived social support and socioemotional functioning at the end of the last year of elementary school predicts perceived social support and socioemotional functioning at the end of the first year of junior high school. Study limitations and implications for research and practice are discussed.  相似文献   
999.
We describe an infant with an acute subdural hematoma, a fatal head injury, and severe hemorrhagic retinopathy caused by a stairway fall. His cerebral and ocular findings are considered diagnostic of abusive head trauma by many authors. Our literature search of serious injuries or fatalities from stairway or low-height falls involving young children yielded 19 articles of primary data. These articles are discrepant, making the classification of a young child's death following a reported short fall problematic. This case report contradicts the prevalent belief of many physicians dealing with suspected child abuse that low-height falls by young children are without exception benign occurrences and cannot cause fatal intracranial injuries and severe retinal hemorrhages. The irreparable harm to a caregiver facing an erroneous allegation of child abuse requires physicians to thoroughly investigate and correctly classify pediatric accidental head injuries.  相似文献   
1000.
Primary cardiac tumors are rare, with an autopsy incidence of 0.03%. Seventy-nine percent to 85% of primary cardiac tumors are benign, and of the benign tumors, cardiac hemangiomas account for 5-10% of cases. Most cardiac hemangiomas are asymptomatic and are discovered incidentally at autopsy, or by echocardiography, computerized tomography, or magnetic resonance imaging. We report a case of sudden death owing to cardiac hemangioma in a 22-year-old woman who collapsed while shopping and became unresponsive. The autopsy revealed a hemorrhagic mass on the surface of the right atrium which was infiltrating and replacing the wall of the right atrium; histopathological examination confirmed the tumor was a cavernous hemangioma. Fewer than 20 cases of right atrial cavernous hemangiomas have been reported in English literature, emphasizing the rarity of our case.  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