周恩来与张学良的一次绝密会谈

早些时候披露的张学良自述中透露，“西安事变”前，张学良与周恩来曾有过一次极为秘密的会谈，由于当时的政治气氛，这次会谈是绝密的。     

亚太地区“导弹防御系统”问题综述

2009年4月初,随着美日宣称将拦截朝鲜可能发射的导弹,以美国为主导的亚太地区"导弹防御系统"大有增强与扩展之势。这必将对本地区的战略态执造成重大影响,也再度引起各界的广泛关注。     

阶层认同研究综述

在当下社会转型的加速期,有关阶层认同的研究已成为我国社会各界关注的热点。文章详细阐述了目前阶层认同研究的理论基础、研究策略,并对当前研究进行了评价。     

Sample Size Determination for Categorical Responses

Abstract:  Procedures are reviewed and recommendations made for the choice of the size of a sample to estimate the characteristics (sometimes known as parameters) of a population consisting of discrete items which may belong to one and only one of a number of categories with examples drawn from forensic science. Four sampling procedures are described for binary responses, where the number of possible categories is only two, e.g., licit or illicit pills. One is based on priors informed from historical data. The other three are sequential. The first of these is a sequential probability ratio test with a stopping rule derived by controlling the probabilities of type 1 and type 2 errors. The second is a sequential variation of a procedure based on the predictive distribution of the data yet to be inspected and the distribution of the data that have been inspected, with a stopping rule determined by a prespecified threshold on the probability of a wrong decision. The third is a two-sided sequential criterion which stops sampling when one of two competitive hypotheses has a probability of being accepted which is larger than another prespecified threshold. The fifth procedure extends the ideas developed for binary responses to multinomial responses where the number of possible categories (e.g., types of drug or types of glass) may be more than two. The procedure is sequential and recommends stopping when the joint probability interval or ellipsoid for the estimates of the proportions is less than a given threshold in size. For trinomial data this last procedure is illustrated with a ternary diagram with an ellipse formed around the sample proportions. There is a straightforward generalization of this approach to multinomial populations with more than three categories. A conclusion provides recommendations for sampling procedures in various contexts.     

"Grab the Signatures and Run": Federal Unity Strategy in Canada from the Referendum to Patriation

Whether as a traumatic event or great accomplishment, the legacy of the First Ministers' Conference of 1981 lives on in Canadian politics. Constitutional negotiations among the prime minister and provincial premiers in 1981 produced the only "packaged" agreement since Confederation to achieve even the minimal support necessary to achieve ratification. The resulting Constitution Act of 1982, which included the Charter of Rights and Freedoms, remains in place and is the principal manifestation of intergovernmental bargaining from over two decades ago. This study reevaluates the strategic interaction and conflict processes that took place between Ottawa and the provinces in negotiations leading up to that fateful November 1981 conference. We apply the sociological framework for assessment of the dynamics of identity contention adopted from McAdam, Tarrow, and Tilly (2001) and find tentative support for its propositions. After an overview of the article's agenda, we present an analytic framework for the study of conflict processes. Second, the background to the constitutional crisis of 1980-81 is summarized. Using the analytic framework, the third section focuses on the federal strategy in the crisis as suggested by minutes from cabinet meetings, and the fourth section examines key events of the First Ministers Conference of November 1981. Fifth, and finally, the contributions of the preceding sections are summed up and ideas are put forward for further research.     

党校教师应承担对学员创新能力培养的职责

缺乏创新意识和创新能力的教师培养不出具有创新意识和创新能力的学员。党校教师的教学工作必须弘扬与时俱进的精神，在教学过程中让学员的思想火花竞相进发。为此，必须进一步优化教学内容、改进教学方法、加强实践教学、建立创新激励机制。     

自动热脱附气相色谱-质谱法分析火场助燃剂汽油成分

目的建立检验纵火案件现场燃烧残留物中助燃剂汽油成分的方法。方法利用自动热脱附技术对火场残留物中的助燃剂进行富集、浓缩、脱附后经气-质联用仪（GG-MS）分析。结果结合现场燃烧环境运用目标化合物法能够判定是否含有助燃剂汽油成分。结论该方法简便易行。     

Biting Through an Arteriovenous Hemodialysis Graft: An Unusual Method of Suicide

Abstract:  Patients on long-term hemodialysis often have multiple medical and social problems with associated psychological stress and depression. The suicide rate in this population is higher than the general population, and suicides have been reported following severing or disconnection of hemodialysis vascular access sites. We report a patient on chronic hemodialysis with a history of depression and suicidal ideation who bit into his forearm arteriovenous graft and exsanguinated.