Semiparametric Inference Methods for General Time Scale Models

In this paper we consider semiparametric inference methods for the time scale parameters in general time scale models (Oakes, 1995, Duchesne and Lawless, 2000). We use the results of Robins and Tsiatis (1992) and Lin and Ying (1995) to derive a rank-based estimator that is more efficient and robust than the traditional minimum coefficient of variation (min CV) estimator of Kordonsky and Gerstbakh (1993) for many underlying models. Moreover, our estimator can readily handle censored samples, which is not the case with the min CV method.     

Perfect simulation for correlated Poisson random variables conditioned to be positive

In this paper we present a perfect simulation method for obtaining perfect samples from collections of correlated Poisson random variables conditioned to be positive. We show how to use this method to produce a perfect sample from a Boolean model conditioned to cover a set of points: in W.S. Kendall and E. Thönnes (Pattern Recognition 32(9): 1569–1586, 1999), this special case was treated in a more complicated way. The method is applied to several simple examples where exact calculations can be made, so as to check correctness of the program using ²-tests, and some small-scale experiments are carried out to explore the behaviour of the conditioned Boolean model.     

市场化对我国住房政策制定的影响

随着我国住房市场化进程的深入,住房一、二级市场联动和需求多元化对住房政策的影响日益突出。本文概要介绍市场化下发达国家对住房政策研究的主要方法——“过滤模型”;应用“过滤模型”研究我国住房市场,并在此基础上对政府的城市住房政策提出建议。     

试析毛泽东社会主义目标模式的乌托邦情结

毛泽东社会主义目标模式中的乌托邦情结是导致毛泽东晚年错误的源头之一。本文试图通过对毛泽东社会主义目标模式中的乌托邦情结的历史演变以及形成的理论渊源、实践基础的分析 ,总结其经验教训 ,以求在新的历史条件之下 ,按照马克思主义所具有的与时俱进的理论品质 ,以科学的精神研究新情况 ,解决新问题 ,将中国特色的社会主义建设事业向前推进     

A Minimum Distance Estimation Approach to the Two-Sample Location-Scale Problem

As reported by Kalbfleisch and Prentice (1980), the generalized Wilcoxon test fails to detect a difference between the lifetime distributions of the male and female mice died from Thymic Leukemia. This failure is a result of the test's inability to detect a distributional difference when a location shift and a scale change exist simultaneously. In this article, we propose an estimator based on the minimization of an average distance between two independent quantile processes under a location-scale model. Large sample inference on the proposed estimator, with possible right-censorship, is discussed. The mouse leukemia data are used as an example for illustration purpose.     

宏观经济指标与上证综指长短期走势的预测

上证综合指数和宏观经济指标,如广义货币供应量、国内生产总值、出口与进口的比值,以及外商直接投资之间存在长期的均衡关系,可以通过宏观经济指标来预测上证综合指数的长期走势。误差修正模型的估计结果表明,上证综合指数具备经济"晴雨表"的功能。     

试析清末新政对中国文化与经济近代化的影响

近代中国的落后,使得中国饱受列强的欺凌,先进的中国人掀起了爱国自救运动,与此同时,清政府的上层统治者也在审时度势推行"清末新政",其对中国的文化与经济发展起到重大作用.     

践行"三个代表"思想,推进医疗系统职业道德建设

本文结合学习江泽民"三个代表"思想的体会,论述职业道德建设与发展先进文化的密切关系,并结合医疗系统的具体实际,论述职业道德建设的重要性及具体措施.     

公司治理模式对企业价值最大化理财目标的影响

"多元化"的理财目标取代了"企业价值最大化"的理财目标是中国企业的现状.剖析了市场环境下公司治理问题的深层次原因,并研究了公司股权结构的问题,列举了目前两种典型的公司治理模式,即市场导向模式和关系模式.比较了中国同美国、日本在这些方面的差别,指出了中国公司治理模式的不足之处,对中国企业财务管理目标进行了重新定位.     

军医大学学员对抗击“非典”斗争认识的调查研究

在抗击"非典"斗争中,军医大学学生怎样认识自己的责任?怎样看待军人与国家和民族利益的关系?作为未来的医护人员,他们对自己所选择的职业是否产生动摇?了解这些情况,有助于加强军医大学学生在和平年代对军人职业深层次的认识,进一步增强他们对社会、人生和职业等社会责任感。