卧式椭圆轨迹振动筛的自定中心问题研究

当振动筛筛箱各点作长轴平行于筛面的椭圆轨迹运动时,这种振动筛的胶带轮不可能只作定轴转动(即自定中心)。如果恰当地选择胶带轮几何中心的偏心值,胶带轮的摆动幅度将减小,因此,胶带的工作情况仍将得到改善。     

现代编辑意识浅议

编辑意识是指在编辑活动中，编辑人员所具有的观念，也就是引导编辑做好选题策划、审稿编稿、出版发行的指导思想，是从事编辑工作的主导意识。不断增强和优化编辑个体素养与群体意识、社会服务与引领学科发展意识、创新与超前意识、商品与经营意识，对促进刊物品质具有重要意义。     

论科技统计对高校发展的重要作用

科技统计是科学决策的基础，是组织架构设立和调整的依据，是科学制定和有效评价激励政策的前提，是贯彻“以人为本”管理思想的重要手段。对如何加强科技统计工作也提出了相关建议。     

论土族民间信仰象征

文章在田野调查的基础上，对土族民间信仰中的象征体系从象征思维、结构、具象等方面进行了归纳分析，认为土族民间信仰象征内容十分丰富，且随着社会的演进，其程序亦不断发生异化。     

我国中学课堂纪律重建策略

针对目前中学课堂纪律存在问题进行分析,并提出重建策略:社会要营造和谐的环境,学校要在新课程背景下实现工具性纪律向发展性纪律的转变,教师要树立正确的学生观与纪律哲学观,正确的认识教师权威和学生自主,并通过对话处理好教师权威与学生自主的关系。     

典型儿童强迫症个案的整合主义心理治疗分析

分析一例典型儿童强迫官能症的整合主义心理疗法理念和治疗过程，及其治疗的有效性，探讨整合主义心理治疗的发展趋向和综合成因。结论：整合主义心理治疗是一种有效治疗手段，符合一般发展规律，在减轻患者强迫症状，增强社会功能方面均有较好的效果。     

巩固和发展和谐的社会主义民族关系——对散居少数民族权益保障问题的思考

随着社会和经济的发展，少数民族公民散居于各地的趋势日益明显，民族散居化的格局日益突出。进一步重视少数民族工作，注意保障散居少数民族权益，对更好的巩固和发展和谐的社会主义民族关系具有重要的现实意义。可以从观念上、立法上进一步完善散居少数民族权益保障法律制度。     

A circular-cone test for testing homogeneity against a simple tree order

Several methods exist for the problem of testing the equality of several treatments against the one-sided alternative that the treatments are better than the control. These methods include Dunnett's test, Bartholomew's likelihood-ratio test, the Abelson-Tukey-Schaafsma-Smid optimal-contrast test, and the multiple-contrast test of Mukerjee, Robertson, and Wright. A new test is proposed based on an approximation of the likelihood-ratio test of Bartholomew. This test involves using a circular cone in place of the alternative-hypothesis cone. The circular-cone test has excellent power characteristics similar to those of Bartholomew's test. Moreover, it has the advantages of being simpler to compute and may be used with unequal sample sizes.     

On the preservation of copula structure under truncation

The author characterizes the copula associated with the bivariate survival model of Clayton (1978) as the only absolutely continuous copula that is preserved under bivariate truncation.     

De minimis and equity in risk

Indices and orderings are developed for evaluating alternative strategies in the management of risk. They reflect the goals of reducing individual and collective risks, of increasing equity, and of assigning priority to the reduction and to the equity of high risks. Individual risk is defined as the (random or non-random) level of exposure to a danger. In particular the role of a lower negligibility level is investigated. A class of indices is proposed which involves two parameters, a negligibility level and a parameter of inequality aversion, and several interpretations of the indices are discussed. We provide a set of eight axioms which are necessary and sufficient for this class of indices, and we present an approach to deal with partial information on the parameters.