全文获取类型
收费全文 | 1353篇 |
免费 | 56篇 |
专业分类
各国政治 | 101篇 |
工人农民 | 75篇 |
世界政治 | 109篇 |
外交国际关系 | 128篇 |
法律 | 556篇 |
中国政治 | 16篇 |
政治理论 | 416篇 |
综合类 | 8篇 |
出版年
2023年 | 15篇 |
2022年 | 5篇 |
2021年 | 13篇 |
2020年 | 24篇 |
2019年 | 45篇 |
2018年 | 53篇 |
2017年 | 61篇 |
2016年 | 63篇 |
2015年 | 41篇 |
2014年 | 42篇 |
2013年 | 262篇 |
2012年 | 41篇 |
2011年 | 49篇 |
2010年 | 34篇 |
2009年 | 38篇 |
2008年 | 46篇 |
2007年 | 34篇 |
2006年 | 38篇 |
2005年 | 33篇 |
2004年 | 46篇 |
2003年 | 34篇 |
2002年 | 26篇 |
2001年 | 30篇 |
2000年 | 25篇 |
1999年 | 20篇 |
1998年 | 23篇 |
1997年 | 18篇 |
1996年 | 19篇 |
1995年 | 21篇 |
1994年 | 15篇 |
1993年 | 20篇 |
1992年 | 15篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 15篇 |
1988年 | 15篇 |
1987年 | 14篇 |
1986年 | 11篇 |
1985年 | 9篇 |
1984年 | 10篇 |
1983年 | 9篇 |
1982年 | 7篇 |
1981年 | 6篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1978年 | 8篇 |
1975年 | 3篇 |
1972年 | 3篇 |
1970年 | 2篇 |
1969年 | 4篇 |
排序方式: 共有1409条查询结果,搜索用时 125 毫秒
161.
Prolapse rectum (PR) or protrusion of the rectum beyond the anus occurs frequently in populations at both extremes of age. In the pediatric population, in developed countries, the commonest cause for PR is thought to be cystic fibrosis (CF). Treatment options for CF include conservative management, surgical resection and fixation, suturing, and injection sclerotherapy (IS). The last is considered an attractive treatment option because it is minimally invasive. In this case report, the authors present the details about a 2-year-old female child, with PR and CF, who died after IS, using phenol as the sclerotherapeutic agent. Autopsy findings and toxicology tests performed to establish phenol toxicity are documented. The available literature is reviewed. This case report underscores the risks of using phenol for IS and emphasizes the point that the procedure is not innocuous and an adverse outcome including fatality is a possibility. 相似文献
162.
A 48-year-old-woman was struck dead by lightning on October 24, 2010, in Pretoria, South Africa. The cause of death was due to direct lightning strike. Examination showed secondary missile injury on her legs. This secondary missile (shrapnel) injury was caused by the lightning striking the concrete pavement next to her. Small pieces of concrete were located embedded within the shrapnel wounds. This case report represents the first documented case of secondary missile formation (shrapnel injury) due to lightning strike in the literature. 相似文献
163.
Ma R Shimmon R McDonagh A Maynard P Lennard C Roux C 《Forensic science international》2012,217(1-3):e23-e26
This article describes the use of an anti-Stokes luminescent material (upconverter), yttrium vanadate doped with ytterbium and erbium (YVO(4):Er,Yb), for the development of latent fingermarks on a range of non-porous surfaces. Anti-Stokes luminescent materials emit light at shorter wavelengths than the excitation wavelength. This property is unusual in both natural and artificial materials commonly found as exhibits in forensic science casework. As a result, fingermark detection techniques based on anti-Stokes luminescence are potentially extremely sensitive and selective. Latent fingermarks on non-luminescent and inherently luminescent substrates, including Australian polymer banknotes (a well-known 'difficult' surface), were developed with YVO(4):Er,Yb by dry powder and wet powder techniques. The effectiveness of YVO(4):Er,Yb for fingermark detection was compared with that of cyanoacrylate fuming and of sodium yttrium tetrafluoride doped with ytterbium and erbium (NaYF(4):Er,Yb). The results illustrate some benefit of luminescent up-converting phosphors over traditional luminescence techniques for the detection of latent fingermarks. 相似文献
164.
Ryan C. Meldrum Jacob T. N. Young Carter Hay Jamie L. Flexon 《Journal of Quantitative Criminology》2012,28(4):673-699
Objectives
The purpose of this study is twofold. First, this study assesses the extent to which self-control and maternal attachment mutually influence one another. Second, it investigates whether this process continues to occur during adolescence. To date, studies of the etiology of self-control have yet to adequately address these issues, despite the fact that a number of theoretical perspectives emphasize the reciprocal nature of the parent-child relationship.Methods
The current study seeks to shed light on these issues by examining the relationship between self-control and maternal attachment using structural equation modeling for eight waves of data spanning a period of time that encompasses early childhood through middle adolescence.Results
The results yield two findings bearing on the adequacy of Gottfredson and Hirschi??s model of self-control development. First, measures of self-control and maternal attachment were found to mutually influence one another during childhood. Second, these effects were reduced to nonsignificance during adolescence.Conclusions
This study finds that self-control emerges during childhood in a complex manner in which it both shapes and is shaped by parental attachment. 相似文献165.
Kate Ryan Kuhlman Kathryn H. Howell Sandra A. Graham-Bermann 《Journal of family violence》2012,27(6):499-510
Exposure to violence and traumatic events during childhood has long been associated with poor physical and psychological health during adulthood. Very few studies, however, have taken steps to understand the immediate relationship between exposure to intimate partner violence (IPV) and physical health problems in young children. In this study, we examined the mother-reported physical health problems of 102 preschool-age children who have been exposed to IPV. We found that children exhibiting more traumatic stress symptoms displayed fewer total health problems; however, gastrointestinal problems and asthma were related to poor psychological adjustment. We also found that preschool-age girls were more likely to display health problems than boys. Future studies of the physical health consequences of exposure to IPV in young children would benefit from examinations of specific changes in physiological processes to draw conclusions about the effects of violence on immune system functioning and physical health. 相似文献
166.
Febres J Shorey RC Brasfield H Zucosky HC Ninnemann A Elmquist J Bucossi MM Andersen SM Schonbrun YC Stuart GL 《Journal of interpersonal violence》2012,27(15):3115-3126
The substantial increase in the enrollment of women in batterer intervention programs (BIPs) over the past 30 years has greatly outpaced research on women who perpetrate intimate partner violence (IPV). As a result, it is unknown whether existing programs, which were originally designed to treat male perpetrators, are effective at preventing recidivism among women. Recent research shows that men who perpetrate IPV may also aggress against nonintimate partners, children, and animals, and that the reach of their aggressive tendencies has implications for treatment. Conducting similar investigations on women who perpetrate IPV may help to inform treatment delivery in BIPs. This study examined the prevalence of adulthood animal abuse perpetration and its association with psychological and physical IPV perpetration in a sample of women arrested for domestic violence (N = 87). Seventeen percent (n = 15) of the women committed at least one act of animal abuse since the age of 18, in contrast to the 0.28% prevalence rate reported in the general population. The overrepresentation of animal abuse in this sample was consistent with that of men arrested for domestic violence. Furthermore, women who reported committing animal abuse as an adult showed moderately higher rates of psychological aggression and physical assault perpetration against their partners, relative to women who did not report animal abuse. Implications for future research are discussed. 相似文献
167.
Child sexual abuse (CSA) often requires psychological treatment to address the symptoms of victim trauma. Barriers to entry and completion of counseling services can compromise long-term well-being. An integrated medical and mental health evaluation and treatment model of a child advocacy center (CAC) has the potential to reduce barriers to mental health treatment. Objective: (a) to describe characteristics between CSA patients who engage versus those who do not engage in mental health treatment and (b) to identify factors associated with successful completion of mental health treatment goals. For design/setting, a retrospective cohort study was conducted of CSA patients (ages 3-16 years) referred to mental health services following a CAC assessment. Outcome variables included linkage with treatment and completion of treatment. Independent variables included demographics, abuse characteristics, and therapist characteristics. Data were abstracted from the CAC and billing databases. Results: Four hundred ninety subjects were evaluated. Subjects were as follows: predominately female (74%), White (60%), and more than half received Medicaid (56%). Mean age was 8.4 years. About 52% linked with mental health services and 39% of patients that successfully linked with mental health services completed therapy. Successful linkage was independently associated with referrals to other counseling services (AOR 8.4 [2.5, 27.7]). Successful completion of therapy was independently associated with caregiver participation in therapy (AOR 3.2 [1.8, 6.0]) and if the patient was referred to other counseling services (AOR 4.1 [1.9, 8.5]). There were no differences between subjects that linked and/or completed therapy and those that did not with regard to demographic characteristics or abuse severity. Conclusion: In contrast to previous reports, efforts at our CAC seem to overcome linkage barriers in this population. However, there remain challenges in achieving successful completion of treatment goals in this population. Engaging caregivers' involvement in therapy services had a positive effect with successfully achieving treatment goals. 相似文献
168.
Philip J. Berran J.D. M.D. Edward L. Mazuchowski M.D. Ph.D. Abubakr Marzouk M.D. H. Theodore Harcke M.D. 《Journal of forensic sciences》2014,59(4):1121-1125
An algorithm incorporating multidetector computed tomography (MDCT), digital radiographs, and external examination was used to triage cases for noninvasive or complete autopsy after a natural disaster. The algorithm was applied to 27 individuals who died during or soon after the earthquake that struck the Republic of Haiti on January 12, 2010. Of the 27 cases reviewed, 7 (26%) required a complete autopsy to determine cause and manner of death. In the remaining 20 (74%), cause and manner of death were determined with a reasonable degree of medical certainty after review of circumstances, an external examination, and postmortem imaging by MDCT and digital radiography (noninvasive autopsy). MDCT was particularly useful in detecting skeletal fractures caused by blunt force injury which were not evident on digital radiographs. The algorithm incorporating postmortem MDCT can be useful in the triage of human remains for autopsy after a natural disaster. 相似文献
169.
Why are hate crime cases so rarely prosecuted? Most states and the federal government have hate crime laws on their books, yet available data indicate few prosecutions in most jurisdictions. Drawing on case files and interviews with police and prosecutors in one jurisdiction, three institutional impediments to hate crime prosecution are identified: evidentiary inflation, by which law enforcement uses a higher burden of proof than what is required by statute; loose coupling between police departments and prosecutors' offices; and cultural distance between law enforcement and victims. Findings also reveal that advocacy groups and media can successfully increase the visibility of cases and draw the attention of prosecutors. The findings align with aspects of legal endogeneity theory and enhance our understanding of the role of organizations in constructing the meaning of law. The results also help explain why some laws are rarely enforced, even when they have support from key personnel in an organization. 相似文献
170.