全文获取类型
收费全文 | 16999篇 |
免费 | 404篇 |
专业分类
各国政治 | 753篇 |
工人农民 | 543篇 |
世界政治 | 1135篇 |
外交国际关系 | 548篇 |
法律 | 10643篇 |
中国共产党 | 1篇 |
中国政治 | 86篇 |
政治理论 | 3517篇 |
综合类 | 177篇 |
出版年
2020年 | 160篇 |
2019年 | 228篇 |
2018年 | 300篇 |
2017年 | 336篇 |
2016年 | 351篇 |
2015年 | 262篇 |
2014年 | 298篇 |
2013年 | 1653篇 |
2012年 | 396篇 |
2011年 | 438篇 |
2010年 | 348篇 |
2009年 | 410篇 |
2008年 | 437篇 |
2007年 | 419篇 |
2006年 | 420篇 |
2005年 | 369篇 |
2004年 | 364篇 |
2003年 | 382篇 |
2002年 | 378篇 |
2001年 | 681篇 |
2000年 | 594篇 |
1999年 | 490篇 |
1998年 | 230篇 |
1997年 | 220篇 |
1996年 | 203篇 |
1995年 | 207篇 |
1994年 | 216篇 |
1993年 | 204篇 |
1992年 | 360篇 |
1991年 | 384篇 |
1990年 | 358篇 |
1989年 | 399篇 |
1988年 | 349篇 |
1987年 | 346篇 |
1986年 | 397篇 |
1985年 | 370篇 |
1984年 | 341篇 |
1983年 | 325篇 |
1982年 | 217篇 |
1981年 | 196篇 |
1980年 | 163篇 |
1979年 | 242篇 |
1978年 | 143篇 |
1977年 | 164篇 |
1976年 | 145篇 |
1975年 | 131篇 |
1974年 | 163篇 |
1973年 | 154篇 |
1972年 | 140篇 |
1971年 | 122篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
Shaw D Fernandes JR Rao C 《The American journal of forensic medicine and pathology》2005,26(4):309-315
Suicide is second only to accidents as the most common cause of death for children and adolescents age 10 to 19 in Canada. All of the pediatric cases that were referred to the Hamilton Regional Forensic Pathology Unit from 1993 to 2002 were reviewed. For the purpose of this study, pediatric deaths were defined as deaths in the age group of 1 day up to and including 19 years of age. Specific criteria for suicide were applied to each case, independent of the manner of death issued by the coroner. The criteria were 3-fold. First, homicide had to be ruled out by the police investigation and autopsy findings. Second, the method had to be consistent with self-infliction. Finally, there had to be some evidence of suicidal intent. Questionable cases were discussed among the authors, and if reasonable intent could not be established, then the case was excluded. The autopsy and police reports were examined in detail regarding age, sex, location and method of suicide, presence of suicide notes, and any contributing psychologic factors or stressors. Of the 501 pediatric autopsies performed during the 10-year period, 31 (6%) met the criteria of suicide. The majority of cases (87%) were in older adolescents (age 15 to 19), and the male to female ratio was 2.4:1. Psychologic factors were identified in some of the cases, including depressed mood (77%), suicidal ideation (45%), previous suicide attempts (23%), and drug or alcohol problems (19%). Most of the suicides (61%) occurred in the victim's home, and 12 (39%) cases left a suicide note. In 9 cases (29%), alcohol or street drugs were detected postmortem, though in 8 cases toxicology was not performed. Hanging (48%) was the most common method of suicide, followed by firearms (13%), poisoning (10%), drowning (10%), and blunt force vehicular trauma (10%). Almost 60% of the male suicides were by hanging. No specific trend was identified in the 9 female suicides. These results were compared with similar studies within Canada and other countries. Overall, the method of suicide is dictated by what is convenient and readily available, though the acceptance of various suicide methods can change over time. Suicide prevention efforts should be tailored to address local trends. 相似文献
982.
Jackowski C Römhild W Aebi B Bernhard W Krause D Dirnhofer R 《The American journal of forensic medicine and pathology》2005,26(4):355-359
We present a case of an accidental autoerotic death involving the inhalation of a propane-butane gas mixture, also known as LPG (liquefied petroleum gas). A 19-year-old male was found dead in supine position in his bed in a residential accommodation one day after he was last seen alive. On a personal computer at the end of the bed, a pornographic movie was still running. On his left shoulder, an empty rubber balloon and on the bedside 2 empty "Kisag-Gas" cartridges were found. Toxicologic investigations revealed an intoxication with propane and butane, together with a recent consumption of cannabis. This case report compares the toxicologic findings with other recently published cases, and the theories of the toxic effects are discussed. 相似文献
983.
A coffee can, factor analysis, and prediction of antisocial behavior: the structure of criminal risk
The predictive accuracy of the Psychopathy Checklist-Revised, Level of Service Inventory-Revised, Violence Risk Appraisal Guide, and the General Statistical Information on Recidivism were compared to four instruments randomly generated from the total pool of original items. None of the four original instruments better predicted post-release failure than the four randomly generated instruments. These results suggest two conclusions: (a) the instruments are only measuring criminal risk, and (b) no single instrument has captured sufficient risk assessment theory to result in better prediction than randomly derived instruments measuring criminal risk. A two-stage factor analysis was completed on 1614 cases. This analysis of the risk items indicated a 4-factor solution and all 4 factors were equal to the original instruments in predicting post-release failure. Thus, the original instruments did not improve prediction over randomly structured scales, nor did the restructuring of items improve risk assessment, suggesting substantial deficiencies in the conceptualization of risk assessment and instrumentation. We argue that developing a risk-based construct, which involves hypothesis testing and an explanation of behavior, is the optimal method to advance risk assessment within the criminal justice and mental health systems. Such an approach would provide targeted areas for clinical intervention that are salient to risk. 相似文献
984.
Timmerman IG Emmelkamp PM 《International journal of offender therapy and comparative criminology》2005,49(5):590-606
The effects of an intramural cognitive-behavioral treatment for forensic inpatients with personality disorders in a high-security hospital were examined. Treatment was aimed at modifying maladaptive coping and social skills, at enhancing social awareness, at reducing egoistic and oppositional behaviors, and at reducing psychological complaints. The patients, who all had committed serious crimes (violence, arson, sexual offences), participated voluntarily in the study. A total of 39 patients started the study, but during the course of the study, several patients dropped out because of several reasons. Patients as a group showed significant improvements over time on psychopathological symptoms, personality traits, and coping. A significant decrease of oppositional behaviors was reported by the staff. Though the patients improved well at the group level, only a minority of patients showed reliable change over time at the individual level. The meaning of the results in relation to treatment are discussed. 相似文献
985.
Burns FR 《International journal of law and psychiatry》2005,28(3):300-319
Australia, like other western nations, is facing the prospect that in the decades ahead the overall population will age dramatically. This article considers legal issues associated with the aged and intergenerationally transmitted debt. It will be argued that the present legal regulation of guarantees is a complex amalgam of case law, statute and finance industry self-regulatory codes which does not necessarily or adequately take into account the particular vulnerabilities of the aged and the very old or the intergenerational pressures which they may confront. It may be necessary to take significant steps to protect vulnerable elders while still recognizing their rights to exercise personal autonomy. Some proposals for reform are made. 相似文献
986.
The present study tested the proposition that disengagement of moral self-sanctions enables prison personnel to carry out the death penalty. Three subgroups of personnel in penitentiaries located in three Southern states were assessed in terms of eight mechanisms of moral disengagement. The personnel included the execution teams that carry out the executions; the support teams that provide solace and emotional support to the families of the victims and the condemned inmate; and prison guards who have no involvement in the execution process. The executioners exhibited the highest level of moral, social, and economic justifications, disavowal of personal responsibility, and dehumanization. The support teams that provide the more humane services disavowed moral disengagement, as did the noninvolved guards but to a lesser degree than the support teams. 相似文献
987.
Blumenthal D Weissman JS Wachterman M Weil E Stafford RS Perrin JM Ferris TG Kuhlthau K Kaushal R Iezzoni LI 《Journal of health politics, policy and law》2005,30(3):453-473
Risk adjustment (RA) consists of a series of techniques that account for the health status of patients when predicting or explaining costs of health care for defined populations or for evaluating retrospectively the performance of providers who care for them. Although the federal government seems to have settled on an approach to RA for Medicare Advantage programs, adoption and implementation of RA techniques elsewhere have proceeded much more slowly than was anticipated. This article examines factors affecting the adoption and use of RA outside the Medicare program using case studies in six U.S. health care markets (Baltimore, Seattle, Denver, Cleveland, Phoenix, and Atlanta) as of 2001. We found that for purchasing decisions, RA was used exclusively by public agencies. In the private sector, use of risk adjustment was uncommon and scattered and assumed informal and unexpected forms. The most common private sector use of RA was by health plans, which occasionally employed RA in negotiations with purchasers or to allocate resources internally among providers. The article uses classic technology diffusion theory to explain the adoption and use of RA in these six markets and derives lessons for health policy generally and for the future of RA in particular. For health policy generally, the differing experiences of public and private actors with RA serve as markers of the divergent paths that public and private health care sectors are pursuing with respect to managed care and risk sharing. For the future of RA in particular, its history suggests the need for health service researchers to consider barriers to use adoption and new analytic technologies as they develop them. 相似文献
988.
989.
Korea recently introduced three major health care reforms: in financing (1999), pharmaceuticals (2000), and provider payment (2001). In these three reforms, new government policies merged more than 350 health insurance societies into a single payer, separated drug prescribing by physicians from dispensing by pharmacists, and attempted to introduce a new prospective payment system. This essay compares the three reforms in Korea and draws important lessons about the country's changing process and politics of health care policy. The change of government, the president's keen interest in health policy, and democratization in the public policy process toward a more pluralist context opened a policy window for reform. Civic groups played an active role in the policy process by shaping the proposals for reform-a major change from the previous policy process that was dominated by government bureaucrats. The three reforms also showed important differences in the role of interest groups. Strong support by the rural population and labor unions contributed to the financing reform. In the pharmaceutical reform, which was a big threat to physician income, the president and civic groups succeeded in quickly setting the reform agenda; the medical profession was unable to block the adoption of the reform but their strikes influenced the content of the reform during implementation. Physician strikes also helped block the implementation of the payment reform. Future reform efforts in Korea will need to consider the political management of vested interest groups and the design of strategies for both scope and sequencing of policy reforms. 相似文献
990.
Schoon GA 《Forensic science international》2005,147(1):43-47
In a scent identification line-up, a trained dog matches the scent trace left by a perpetrator at the crime scene to the odour of a suspect in a line-up of different odours. The procedures are strictly defined and the results are routinely used by the police and as evidence in court in a number of European countries. This paper describes the effect of ageing of the odour trace collected at the crime scene on the performance of the dogs in recognising the perpetrator in a line-up. The results show that whilst the dogs perform faultlessly in matching odours collected on the same day, the results drop to a lower level and become more variable in the period studied (2 weeks to 6 months). However, the results do not show a systematic decrease in performance. A possible explanation is the development of a steady state in the glass jars containing the perpetrator odour trace after initial differential evaporation of components of the residue or break down of unsaturated components into saturated ones. Prevention of this initial change may prevent the drop in performance observed in this study, thus increasing the reliability of these scent identifications. 相似文献