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   249篇
  免费   11篇
各国政治   20篇
工人农民   18篇
世界政治   23篇
外交国际关系   14篇
法律   99篇
政治理论   83篇
综合类   3篇
  2023年   2篇
  2022年   3篇
  2021年   3篇
  2020年   6篇
  2019年   7篇
  2018年   9篇
  2017年   8篇
  2016年   11篇
  2015年   6篇
  2014年   14篇
  2013年   46篇
  2012年   2篇
  2011年   9篇
  2010年   2篇
  2009年   5篇
  2008年   4篇
  2007年   12篇
  2006年   6篇
  2005年   5篇
  2004年   7篇
  2003年   6篇
  2002年   9篇
  2001年   4篇
  2000年   6篇
  1999年   6篇
  1998年   2篇
  1995年   3篇
  1994年   4篇
  1993年   4篇
  1992年   2篇
  1991年   1篇
  1990年   2篇
  1989年   1篇
  1988年   3篇
  1987年   6篇
  1986年   3篇
  1985年   3篇
  1984年   3篇
  1983年   2篇
  1982年   3篇
  1981年   1篇
  1980年   2篇
  1979年   3篇
  1978年   3篇
  1977年   2篇
  1976年   1篇
  1974年   3篇
  1973年   2篇
  1972年   1篇
  1971年   1篇
排序方式: 共有260条查询结果,搜索用时 31 毫秒
231.
In November 2018, Butte County, California, was decimated by the Camp Fire, the deadliest wildfire in state history. Over 150,000 acres were destroyed, and at its peak, the fire consumed eighty acres per minute. The speed and intensity of the oncoming flames killed scores of people, and weeks before the fire was contained, first responders began searching through the rubble of 18,804 residences and commercial buildings. As with most mass disasters, conventional identification modalities (e.g., fingerprints, odontology, hardware) were utilized to identify victims. The intensity and duration of the fire severely degraded most of the remains, and these approaches were useful in only 22 of 84 cases. In the past, the remaining cases would have been subjected to conventional DNA analysis, which may have required months to years. Instead, Rapid DNA technology was utilized (in a rented recreational vehicle outside the Sacramento morgue) in the victim identification effort. Sixty-nine sets of remains were subjected to Rapid DNA Identification and, of these, 62 (89.9%) generated short tandem repeat profiles that were subjected to familial searching; essentially all these profiles were produced within hours of sample receipt. Samples successfully utilized for DNA identification included blood, bone, liver, muscle, soft tissue of unknown origin, and brain. In tandem with processing of 255 family reference samples, 58 victims were identified. This work represents the first use of Rapid DNA Identification in a mass casualty event, and the results support the use of Rapid DNA as an integrated tool with conventional disaster victim identification modalities.  相似文献   
232.
One prominent method for controlling health costs is to find measures for the management of demand. Various options exist for this; and many of them have been tried during the fifty years of the UK's National Health Service. Current policy now focuses on what may be called “scientific‐bureaucratic medicine.” This policy is based on the assumptions that valid medical knowledge is derived from accumulated research evidence and that such knowledge should be implemented through clinical guidelines which are enforced to some extent. This UK development has parallels with the US Agency for Health Care Policy and Research whose experience, therefore, raises some policy issues for the UK.  相似文献   
233.
234.
Juvenile delinquency has historically been responded to by “de-familization” of the young offender; that is, removal to a training school or other institutional setting. The trend over the past two decades toward deinstitutionalization has meant that delinquent youngsters, who are now remaining in the context of their own communities and families, have been “re-familized.” This poses a major challenge for the juvenile justice system and community, who are stuck with the family but are not sure what to do about it. Little objective and systematic information is available concerning families of delinquents, either as an aggregate group or in individual cases. It is hypothesized that the families are as heterogeneous as are delinquent youngsters, but the juvenile justice system tends to scapegoat families and assumes they are all necessarily dysfunctional. A 10-point continuum of family functioning is proposed. It is suggested that families of delinquent youngsters are found at various points on this continuum: from the extremely impaired or criminogenic family, through the family that has serious problems but has something to offer its youngster if it receives effective help with those problems, to the family of average functioning that can serve as a major rehabilitative resource for the youngster.  相似文献   
235.
236.
Judicial and legal changes in divorce rules and precedents over the last two decades have led to increasing involvement by mental health professionals in child custody disputes. This involvement usually entails an evaluation of the child and parents, along with a recommendation to the court regarding custody. To date, there is little empirical evidence supporting the efficacy of methods typically used by professionals in making recommendations to the court. This article presents a review of assessment methods currently used in resolving child custody disputes. It also reviews the limited number of outcome studies on child custody evaluation and methods used in litigation and mediation.  相似文献   
237.
238.
Contracting has moved from the margins to the centre of public management. Significant sections of the public workforce, from benefits delivery to corporate services, now find their functions open to tender. Governments prefer to concentrate on policy analysis and development, leaving service delivery to the market. As purchasers rather than providers, governments are redefining the role and scope of the state. But are Australian governments ready for this shift to contracting? Do they possess the full array of control and reporting mechanisms necessary if contracting is to deliver its promised benefits? There are significant difficulties finding evidence that answers such questions. Yet on the basis of concerns discussed across Australian jurisdictions, it appears contracting has developed so quickly it outstrips the capacity of government to monitor what is happening, and so learn from mistakes. In time governments will become better at maintaining accountability for contracted functions, because experience reduces the risks of moral hazard.  相似文献   
239.
240.
The purpose of this paper is to investigate the utility of digital dental radiographic superimposition in the various stages of development of the human dentition. Digital, computer assisted dental identification is a means of identification which allows the spatial relationships of the root and support structures of the teeth to be compared one to the other. The technique has not been tested in patients with developing dentitions. Dental radiographs from patients in the pediatric, mixed and permanent dentition stages of development, simulating "antemortem" and "postmortem" radiographs, were digitized using a flat field radiograph scanner. Anatomic features were used as points of comparison utilizing image editing software whereby anatomic sections were digitally cut from the antemortem image and compared to the same anatomic locations on the postmortem image to assess for points of concordance. The technique was applied to 25 cases within the primary dentition, 25 cases within the mixed dentition and 25 cases within the permanent dentition. Results showed that this was a viable technique within both the pediatric and permanent dentition although it was of little value within the mixed dentition.  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