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   335篇
  免费   9篇
各国政治   27篇
工人农民   15篇
世界政治   41篇
外交国际关系   16篇
法律   148篇
中国政治   6篇
政治理论   89篇
综合类   2篇
  2023年   2篇
  2021年   4篇
  2020年   12篇
  2019年   10篇
  2018年   15篇
  2017年   5篇
  2016年   12篇
  2015年   6篇
  2014年   6篇
  2013年   48篇
  2012年   7篇
  2011年   9篇
  2010年   13篇
  2009年   11篇
  2008年   9篇
  2007年   18篇
  2006年   19篇
  2005年   18篇
  2004年   12篇
  2003年   7篇
  2002年   13篇
  2001年   9篇
  2000年   8篇
  1999年   7篇
  1998年   3篇
  1996年   3篇
  1995年   2篇
  1994年   7篇
  1991年   3篇
  1990年   3篇
  1989年   4篇
  1988年   3篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
  1984年   7篇
  1983年   4篇
  1982年   1篇
  1981年   3篇
  1980年   1篇
  1979年   1篇
  1978年   2篇
  1977年   1篇
  1976年   3篇
  1975年   1篇
  1974年   1篇
  1971年   1篇
  1970年   1篇
  1967年   1篇
  1943年   1篇
排序方式: 共有344条查询结果,搜索用时 46 毫秒
51.
This paper is the fifth in a series of six in relation to the development of a harmonised method for the profiling of amphetamine [L. Aalberg, K. Andersson, C. Bertler, H. Borén, M.D. Cole, J. Dahlén, Y. Finnon, H. Huizer, K. Jalava, E. Kaa, E. Lock, A. Lopes, A. Poortman-van der Meer, E. Sippola, Development of a harmonised method for the profiling of amphetamines I. Synthesis of standards and compilation of analytical data, Forensic Sci. Int. 149 (2005) 219-229; L. Aalberg, K. Andersson, C. Bertler, M.D. Cole, Y. Finnon, H. Huizer, K. Jalava, E. Kaa, E. Lock, A. Lopes, A. Poortman-van der Meer, E. Sippola, J. Dahlén, Development of a harmonised method for the profiling of amphetamines II. Stability of impurities in organic solvents, Forensic Sci. Int. 149 (2005) 231-241]. The third paper [K. Andersson, K. Jalava, E. Lock, L. Aalberg, Y. Finnon, H. Huizer, E. Kaa, A. Lopes, A. Poortman-van der Meer, M.D. Cole, J. Dahlén, E. Sippola, Development of a harmonised method for the profiling of amphetamines III. Development of the gas chromatographic method, Forensic Sci. Int., in press] dealt with the optimisation of the gas chromatographic and detection methods whereas the fourth paper [K. Andersson, K. Jalava, E. Lock, Y. Finnon, S. Stevenson, L. Aalberg, H. Huizer, E. Kaa, A. Lopes, A. Poortman-van der Meer, M.D. Cole, J. Dahlén, E. Sippola, Development of a harmonised method for the profiling of amphetamines IV. Optimisation of sample preparation, Forensic Sci. Int., in press] concerned the optimisation of the extraction method prior to GC analysis. This paper is a study of the optimised method in order to determine its stability. Investigations of within and between day variations were carried out in four laboratories. Moreover, variations between laboratories were also determined. Both flame ionisation detector (FID) and MS detection were used. One laboratory studied nitrogen-phosphorous detector (NPD) detection as well. For this task, 12 batches of amphetamine were prepared. Six of them were synthesised via the Leuckart route, three via the nitrostyrene route and three via the reductive amination route [A.M.A. Verweij, Impurities in illicit drug preparations: amphetamine and methamphetamine, Forensic Sci. Rev. 1 (1989) 2-11]. Taking into account all studied target compounds and the average results from four laboratories, the within day variation was around 6% for FID and 5% for MS, the between days variation was around 10% for FID and 8% for MS. For NPD detection, within day variation was 5% and between days variation 9% (only one laboratory). Finally, the inter-laboratory variation was about 12% for FID (four laboratories) and 10% for MS (three laboratories).  相似文献   
52.
The experience of hearing a voice in the absence of an appropriate external stimulus, formally termed an auditory verbal hallucination (AVH), may be malingered for reasons such as personal financial gain, or, in criminal cases, to attempt a plea of not guilty by reason of insanity. An accurate knowledge of the phenomenology of AVHs is central to assessing the veracity of claims to such experiences. We begin by demonstrating that some contemporary criminal cases still employ inaccurate conceptions of the phenomenology of AVHs to assess defendants' claims. The phenomenology of genuine, malingered, and atypical AVHs is then examined. We argue that, due to the heterogeneity of AVHs, the use of typical properties of AVHs as a yardstick against which to evaluate the veracity of a defendant's claims is likely to be less effective than the accumulation of instances of defendants endorsing statements of atypical features of AVHs. We identify steps towards the development of a formal tool for this purpose, and examine other conceptual issues pertinent to criminal cases arising from the phenomenology of AVHs.  相似文献   
53.
Magness  Phillip W. 《Public Choice》2020,182(3-4):417-442
Public Choice - This paper studies the practice of Müsadere in the Ottoman Empire. Müsadere refers to the expropriation of elites—often tax farmers or administrators—by the...  相似文献   
54.
Courts frequently rely on parenting capacity assessments to make decisions about visitation and case progress in child protection court. Although these evaluations can provide valuable information to courts, they often involve assessing areas of human behavior that are not clearly defined in the literature. For example, mental health professionals are often tasked with identifying risk and protective factors for child maltreatment while identifying factors that can impede progress towards reunification. Although some of these factors may be easy to identify and assess (e.g., symptoms of mental illness or substance abuse), others may be more challenging. For example, factors such as denial and minimization about risk factors and maltreatment, a parent(s)’ ability to protect their child(ren) from future incidents of maltreatment, the parent(s)’ potential for change, and the consideration of what is in the best interest of the child are hard to assess. This article will provide a summary of the research in these areas, provide tips for managing these areas, and highlight directions for future investigation that will help inform parenting capacity assessments in child protection court.  相似文献   
55.
Social network theory suggests that firms bridging structural holes by connecting disconnected partners in a network benefit from timely access to diverse knowledge. However, the existing literature reports mixed evidence with regard to the performance implications of this view. Our study examines how a firm’s diverse knowledge base and knowledge-processing capabilities affect knowledge creation when a firm bridges multiple structural holes in an inter-firm network. The model is tested on a sample of 191 firms in high-technology industries. The dependent variable, knowledge creation, was measured by the number of patents generated. Results show that when a firm spans multiple structural holes, its diverse technological knowledge facilitates knowledge creation. However, when a firm already possesses well-developed knowledge acquisition capabilities, spanning structural holes reduces knowledge creation. This paper suggests that internal knowledge base and knowledge-processing capabilities determine the impacts of external network positions on firm knowledge creation. It provides implications on how a firm best capitalizes on external network positions.  相似文献   
56.
57.
This article examines the impact of the Twentieth Congress of the Communist Party of the Soviet Union on the Communist Party of Australia (CPA). Specifically it focuses on the reverberations of Khrushchev's “secret speech” within the CPA leadership for the first six months of 1956. It argues that, in contrast to the received wisdom, the response of the leadership was characterised by confusion rather than consistency, division rather than unanimity. This had implications for CPA members as they struggled to come to terms with the line of the leadership and the authenticity or otherwise of the New York Times version of Khrushchev's speech. The words of [Khrushchev's] speech were like bullets, and each found its place in the hearts of the veteran Communists. Tears streamed down the faces of men and women who had spent forty or more years, their whole adult lives, in the movement […]. 1  相似文献   
58.
The note considers the decision of the Court of Appeal in Maga v The Trustees of the Birmingham Archdiocese of the Roman Catholic Church and analyses the application of the status based risk approach to vicarious liability in that case. It considers its application outside of the area of clerical sexual abuse, and also the role in vicarious liability of job conferred status which materially increases the risk of the commission of a tort, or helps to facilitate a tort.  相似文献   
59.
Two laboratory studies with 332 student participants investigated secondary confessions (provided by an informant instead of the suspect). Participants allegedly caused or witnessed a simulated computer crash, then were asked to give primary or secondary confessions during interrogation. Study 1 replicated the false evidence effect for primary confessions. Secondary confessions were obtained at a high rate, which was increased by false evidence in combination with incentive to confess. In Study 2 a confederate either confessed to or denied crashing the computer. Incentive increased the rate of secondary confession only in the presence of a denial; that is, incentive increased the number of false secondary confessions only. Implications for the use of incentives during informant interrogation are discussed.  相似文献   
60.
I am now yearning for my second home.China,you are very hard to get out of one’s system,and I will return in a couple of weeks!I have just spent three months back in Australia,where the cost of living is so high that it is almost impossible to live without a second source of income.Fortunately,in my case this comes from my writing.While in Australia I negotiated two contracts,one of which was  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