全文获取类型
收费全文 | 545篇 |
免费 | 27篇 |
专业分类
各国政治 | 36篇 |
工人农民 | 59篇 |
世界政治 | 47篇 |
外交国际关系 | 24篇 |
法律 | 256篇 |
中国政治 | 6篇 |
政治理论 | 140篇 |
综合类 | 4篇 |
出版年
2023年 | 7篇 |
2022年 | 10篇 |
2021年 | 7篇 |
2020年 | 18篇 |
2019年 | 13篇 |
2018年 | 24篇 |
2017年 | 25篇 |
2016年 | 27篇 |
2015年 | 20篇 |
2014年 | 33篇 |
2013年 | 87篇 |
2012年 | 15篇 |
2011年 | 25篇 |
2010年 | 21篇 |
2009年 | 13篇 |
2008年 | 21篇 |
2007年 | 32篇 |
2006年 | 19篇 |
2005年 | 16篇 |
2004年 | 13篇 |
2003年 | 13篇 |
2002年 | 11篇 |
2001年 | 5篇 |
2000年 | 10篇 |
1999年 | 9篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1995年 | 3篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1988年 | 4篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1984年 | 3篇 |
1983年 | 2篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1977年 | 4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572条查询结果,搜索用时 15 毫秒
511.
Krous HF Haas EA Chadwick AE Masoumi H Mhoyan A Stanley C 《Forensic science international》2008,176(2-3):209-216
A fraction of SIDS cases have death delayed by successful CPR, yet they have not been compared to SIDS cases which were found dead or not successfully resuscitated. Our aims were to: (1) determine the percent of SIDS cases in the San Diego SIDS Research Project database for whom death was delayed by CPR and subsequent life support; (2) compare demographics, circumstances of death and autopsy findings of delayed death SIDS cases (delayed SIDS) with those whose deaths were not delayed (non-delayed SIDS); (3) examine the evolution of pathologic changes in delayed SIDS as a function of survival interval. A retrospective 15-year population-based study of 454 infant deaths attributed to SIDS revealed 29 delayed SIDS cases (Group I) and 425 non-delayed SIDS cases (Group II). Group I cases were significantly older than Group II cases (mean age 132 days vs. 102 days and p<0.0001). Eighty-nine percent of the Group I cases were discovered between 08.00 and 19.59 h; none were found between 00.00 and 07.59 h, compared to 38% of the Group II cases. Group I infants were found significantly more often away from home (at daycare, or at the home of a relative, friend, or baby sitter) than Group II infants (45% vs. 25%, p<0.05). There were no differences between groups with regard to gender, gestational age, type of delivery, bed sharing, URI within 48 h of death, ALTEs, a history of referral to child protective services, body position when placed or found, or face position when found. Pathologic changes were semiquantitatively evaluated; findings were characteristic of anoxic-ischemic injury that generally became more severe with increasing survival intervals. Anoxic-ischemic brain injury was the immediate cause of death in all delayed SIDS cases. Aspiration of gastric contents was identified in Group I cases surviving less than 48 h and was the likely etiology of acute bronchopneumonia occurring in 83% of the Group I cases. We did not identify factors that would reliably predict which SIDS cases might be discovered soon enough to allow earlier and more effective CPR and survival without permanent brain injury. 相似文献
512.
Ohlenschlaeger J Nordentoft M Thorup A Jeppesen P Petersen L Christensen TØ Krarup G Jørgensen P 《International journal of law and psychiatry》2008,31(1):72-76
The effect of integrated treatment on the use of coercive measures in first-episode schizophrenia-spectrum disorder in Denmark is not known. A total of 328 patients were randomly assigned to integrated treatment (167 patients) or standard treatment (161 patients). Integrated treatment consisted of assertive community treatment, psycho-educational multi-family groups, and social skills training. Data on coercion were extracted from the register from the National Board of Health, and data on continuity from medical records. Even though the level of continuity seemed higher in integrated treatment, this did not reduce the use of coercive measures compared to the use in standard treatment. 相似文献
513.
Kaiser C Bachmeier B Conrad C Nerlich A Bratzke H Eisenmenger W Peschel O 《Forensic science international》2008,180(1):32-36
Stamp marks are used as a unique identification for a range of items, but these can be erased for criminal activities. Erased marks can sometimes be recovered by etching or magnetic means. The present study looked at the application of Fry's reagent to recover erased marks from steel. The investigation also demonstrated that Fry's reagent can deteriorate on storing and will require a longer etching time. The effect of different applied forces of stamping was investigated, and the depth of the underlying deformation was determined by etching after varying degrees of metal removal. The amount of metal needing to be removed depends on the force applied to the die. Metal removal also affects the time needed for recovery. The underlying structural change remains as a hidden identification mark, and could potentially be used by manufacturers as an unseen identifier. A model for the underlying deformation is proposed. 相似文献
514.
The associations between intimate partner violence (IPV) and mental health among adolescent and young adult mothers were compared.
The sample was drawn from the Fragile Families and Child Wellbeing Study and participants were 672 mothers between the ages
of 14 and 21. IPV was significantly positively associated with both depression and anxiety among young adult mothers. However,
these associations were not found among adolescent mothers. In addition, IPV and marital status were significantly related
among young adult mothers, but not adolescent mothers. Results suggest that IPV may have different consequences during different
parts of the life course, or that mental health symptoms may be reported only later in life.
相似文献
Christina B. GeeEmail: |
515.
516.
517.
518.
Katherine M. Wood 《Juvenile & family court journal》1990,41(1):19-37
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
519.
A detailed content analysis of tape-recordings of 100 randomly selected California parole hearings revealed that these hearings take the form of short, unstructured diagnostic interviews in which the hearing officers ask questions of the prisoners who respond in a very minimal way. Different patterns of questioning and prisoner response occurred for hearings where the eventual decision was to grant parole as opposed to deny parole, and this decision outcome could be predicted with a high degree of accuracy by discriminant function analyses. In general, the hearing officers made their own psychological assessments of the prisoners, even though they lacked knowledge and training in this diagnostic skill. According to the results of this study, the parole decision-making process appears to be a reliable one, but nevertheless its validity is questionable. 相似文献
520.