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   442篇
  免费   30篇
各国政治   50篇
工人农民   32篇
世界政治   17篇
外交国际关系   30篇
法律   244篇
中国共产党   1篇
中国政治   3篇
政治理论   84篇
综合类   11篇
  2022年   3篇
  2021年   4篇
  2020年   7篇
  2019年   7篇
  2018年   14篇
  2017年   19篇
  2016年   13篇
  2015年   9篇
  2014年   15篇
  2013年   74篇
  2012年   12篇
  2011年   11篇
  2010年   21篇
  2009年   23篇
  2008年   29篇
  2007年   16篇
  2006年   9篇
  2005年   12篇
  2004年   19篇
  2003年   9篇
  2002年   4篇
  2001年   5篇
  2000年   10篇
  1999年   4篇
  1998年   12篇
  1997年   5篇
  1996年   4篇
  1995年   6篇
  1994年   5篇
  1993年   5篇
  1992年   2篇
  1991年   5篇
  1990年   5篇
  1989年   3篇
  1988年   6篇
  1987年   8篇
  1986年   5篇
  1985年   6篇
  1984年   6篇
  1983年   10篇
  1982年   3篇
  1981年   2篇
  1980年   3篇
  1979年   3篇
  1978年   2篇
  1977年   2篇
  1976年   2篇
  1974年   2篇
  1971年   3篇
  1968年   2篇
排序方式: 共有472条查询结果,搜索用时 31 毫秒
441.
As part of a larger investigation of the changing nature of juror behavior in the context of technology development, this study examined important questions unanswered by previous studies on the “CSI-effect.” In answering such questions, the present study applied multivariate and path analyses for the first time. The results showed that (a) watching CSI dramas had no independent effect on jurors' verdicts, (b) the exposure to CSI dramas did not interact with individual characteristics, (c) different individual characteristics were significantly associated with different types of evidence, and (d) CSI watching had no direct effect on jurors' decisions, and it had an indirect effect on conviction in the case of circumstantial evidence only as it raised expectations about scientific evidence, but it produced no indirect effect in the case of eyewitness testimony only. Finally, implications of the present study as well as for future research on the “CSI-effect” on jurors are discussed.  相似文献   
442.
Abstract: The identification of missing casualties of the Korean War (1950–1953) has been performed using mitochondrial DNA (mtDNA) profiles, but recent advances in DNA extraction techniques and approaches using smaller amplicons have significantly increased the possibility of obtaining DNA profiles from highly degraded skeletal remains. Therefore, 21 skeletal remains of Korean War victims and 24 samples from biological relatives of the supposed victims were selected based on circumstantial evidence and/or mtDNA‐matching results and were analyzed to confirm the alleged relationship. Cumulative likelihood ratios were obtained from autosomal short tandem repeat, Y‐chromosomal STR, and mtDNA‐genotyping results, and mainly confirmed the alleged relationship with values over 105. The present analysis emphasizes the value of mini‐ and Y‐STR systems as well as an efficient DNA extraction method in DNA testing for the identification of old skeletal remains.  相似文献   
443.
A gas chromatography–mass spectrometry (GC–MS) method was developed and validated for the simultaneous qualification and quantification of methamphetamine (MA), amphetamine (AP), 3,4-methylenedioxy-N-methylamphetamine (MDMA), 3,4-methylenedioxy-N-amphetamine (MDA), ketamine (KET) and norketamine (NKT) in fingernails. Fingernail samples (20 mg) were washed with distilled water and methanol, digested with 1.0 M sodium hydroxide at 95 °C for 30 min, and then extracted with ethyl acetate. Extract solutions were evaporated to dryness, derivatized using heptafluorobutyric anhydride (HFBA) at 60 °C for 30 min, and analyzed by GC–MS. The linear ranges were 0.1–20.0 ng/mg for AP, MDMA and NKT, 0.2–20.0 ng/mg for MA and MDA, and 0.4–20.0 ng/mg for KET, with the coefficients of determination (r2  0.9989). The intra- and inter-day precisions were within 7.1% and 10.6%, respectively. The intra- and inter-day accuracies were ?10.9% to 0.8% and ?4.3% to 4.5%, respectively. The limits of detections (LODs) and the limits of quantifications (LOQs) for each analyte were lower than 0.094 ng/mg and 0.314 ng/mg, respectively. The recoveries were in the range of 72.3–94.9%. The average fingernail growth rates of two subjects for three years and six subjects for two months were 3.12 mm/month and 3.16 mm/month, respectively. The method proved to be suitable also for the simultaneous detection and quantification of MA, MDMA, KET and their metabolites in fingernails.  相似文献   
444.
The Diagnostic and Statistical Manual, DSM-IV-TR (American Psychiatric Association 2000) includes the diagnosis of pain disorder, and it has been revised in major ways in the DSM-5 draft (American Psychiatric Association 2010). Pain disorder has been relegated as a specifier of the new diagnosis of complex somatic symptom disorder. It cannot be diagnosed prior to 6 months of the pain’s onset. Also, there are still the pejorative connotations with which the disorder is associated. In terms of treatment, it might be more difficult to get treatment plans accepted as a result of the changes, and in terms of the legal arena, it might prove more difficult to have the disorder serve as the basis of action in legal proceedings.  相似文献   
445.
The series of articles in this special topic on the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) draft (American Psychiatric Association 2010), which is preparatory to publication of the DSM-5, deals with issues and disorders and conditions pertinent to the field of psychological injury and law. The articles describe and critique the changes anticipated for the diagnoses of posttraumatic stress disorder, pain disorder, and neurocognitive disorder, in particular. Further, changes suggested in the draft for personality disorder are analyzed with a critical eye. In addition, the articles examine the lack of change for dealing with malingering and the general lack of consideration of group differences such as for race, in areas pertinent to psychological injury and law. This summary of the articles concludes that some of the changes in the DSM-5 draft are premature, and it calls for continued research and evidence-informed bases for recommended changes for the DSM-V.  相似文献   
446.
This article provides a commentary on the proposed Diagnostic and Statistical Manual of Mental Disorders (DSM)-5 changes with respect to diagnosing posttraumatic stress disorder (PTSD) in diverse cultural groups in clinical and forensic settings. PTSD is the most common diagnosis in personal injury litigants (Koch et al. 2006). By reviewing the symptoms that have been changed in the DSM-5 draft for PTSD in terms of ethnoracial and minority–cultural factors, this article highlights the lack of data needed in the area and that the DSM project should pay more attention to such factors.  相似文献   
447.
The recovery of DNA data from old skeletal remains is often difficult due to degraded and very low yield of extracted DNA and the presence of PCR inhibitors. Herein, we compared several silica-based DNA extraction methods from artificially degraded DNA, DNA with PCR inhibitors and DNA from old skeletal remains using quantitative real-time PCR. We present a modified large-scale silica-based extraction combined with complete demineralization, that enables maximum DNA recovery and efficient elimination of PCR inhibitors. This is performed with high concentration of EDTA solution for demineralization of bone powder followed by QIAamp® spin columns and buffers from the QIAquick® PCR purification kit. We have successfully used this modified technique to perform STR analysis for 55-year-old skeletal remains. The results of this study will contribute to solve the forensic cases dealing with skeletal remains.  相似文献   
448.
Fossil fuel subsidies, like subsidies to the fishing sector, lead to trade-distorting and ecologically harmful practices. The US$35 billion in subsidies provided by countries every year to the fishing sector leads to more and more boats being built, even as 90% of fish stocks are either fully exploited or overfished. An estimated US$444 billion in subsidies are provided annually for the production of fossil fuels by G20 countries, even as evidence emerges that oil, gas and coal reserves must remain unexploited to limit global warming increases to 2 °C. Of course, each country has its own development priorities, livelihood concerns and need for food and energy security. Agreeing upon subsidy reform is a complex undertaking that requires the assessment of social, political and historical considerations, as well as the involvement of international and transnational legal regimes that govern climate change, energy, fisheries and trade. This article reviews proposals for reform within the World Trade Organization and regional trade agreements, including the new disciplines on fisheries subsidies that were endorsed in the text of the Trans-Pacific Partnership. Although the latter agreement is unlikely to enter into force, consensus is emerging on the need to prohibit subsidies that contribute to overfishing or that are linked to illegal, unreported or unregulated fishing. The article shows how these legal developments might inform attempts to limit fossil fuel production and consumption subsidies. It highlights the need for learning and open deliberation about subsidy reform by affected stakeholders, including representatives from international organizations and civil society. It also points to new arrangements that link compliance with subsidy rules to standards and benchmarks from fisheries regimes, and demonstrates how such inter-regime connections are legitimate in the context of the fragmentation of international law. While reform to fisheries subsidies is still preliminary and fraught, there are useful lessons for the equally important project of energy transitions.  相似文献   
449.
Abstract. According to the rational choice model, the calculus of voting takes the form of the equation R = BP − C, where the net rewards for voting (R) are a function of the instrumental benefits from the preferred outcome compared to others (B) and the probability (P) of casting the decisive vote that secures these benefits, minus the costs of becoming informed and going to the polls (C). Here, we provide a systematic test of this model. The analysis relies on two surveys, conducted during the 1995 Quebec referendum and the 1996 British Columbia provincial election, in which very specific questions measured each element of the model. As well, this study incorporates two other factors that can affect the propensity to vote — Respondents' level of political interest and their sense of duty. We find that B, P, and C each matter, but only among those with a relatively weak sense of duty. The feeling that one has a moral obligation to vote is the most powerful motivation to go to the polls. We conclude that the rational choice model is useful, but only in explaining behaviour at the margins of this important norm.  相似文献   
450.
Studies have described measures associated with assault in the community, but few have identified measures associated with assault in prison or prison psychiatric treatment. In this study, prison assault histories and assaults while in prison psychiatric treatment for 222 randomly selected male inmates were evaluated. Using record reviews, interviews, neuropsychological, Rorschach, and psychopathy measures, risk factors for assault in prison and in prison psychiatric treatment were identified. Youth Authority placement, inhalant use, antisocial lifestyle, neurological injury, neuropsychological impairment, and higher PCL-R Factor II ratings were associated with assault in prison. Absence of major mental disorder, neurological impairment, or psychotic thinking, but presence of psychopathy was associated with assault in prison psychiatric treatment. In identifying risk for violence, the importance of (1) the context in which violence occurs; (2) the need for clear admission criteria for prison psychiatric treatment; and (3) the need to develop risk assessments that are specific to prison environments are emphasized.  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