面向多样化需求的M RO 服务资源配置模型与算法

针对大型复杂企业维修任务集的多服务需求点和多样化需求特征,基于服务需求视角,定义一类多服务需求点下的MRO服务资源配置问题,建立以MRO服务提供商整体服务成本为优化目标,同时考虑资源紧张度、信任度和多服务需求点不同工期要求的问题模型;针对模型中的关键参数（即服务成本和资源紧张度）的特征进行分析,并给出相应的度量方法;在此基础上,设计改进的模拟植物生长算法实现求解,算法通过启发式获得初始可行解,并进行敏感性分析。研究结果表明, MRO服务资源配置模型和算法是可行和有效的,服务成本的波动、信任度和资源紧张度的变化对于资源配置结果均有影响,模型能够有效提高维修服务成本的估算能力,同时能够保持MRO服务提供商资源配置的稳定性。     

当前中国行政监察工作的四个着力点

紧紧围绕党的十七大主题充分履行行政监察职能,一要加强监督检查,为推动科学发展提供政治保障;二要抓好纠风治乱,促进社会和谐,解决民生问题,维护群众利益和民主权利;三要注重预防腐败,形成预防腐败的文化氛围,创新和完善体制、机制、制度,保持对腐败分子的高压态势;四要运用监察手段,强化行政问责,建设法治、高效、责任政府。     

我国中小企业融资约束与创新基点

在分析我国中小企业融资结构的基础上,通过实证研究论证了我国中小企业当前仍然面临着较为严重的融资约束问题,提出中小企业应增强自身的资本形成能力,扩大内源融资;与银行、政府、大企业保持良好的合作关系,发展外源融资;拓展集群融资、集合发债等作为融资的创新基点,构建多元化的融资体系。     

Estimating the Number of Change Points in Exponential Families Distributions

A simple method is proposed to detect the number of change points in a sequence of independent exponential family random variables. An estimator to maximize some criterion, say SC ( k ), which is to maximize the log- likelihood function with some penalty term, is used in detection. Under some mild assumptions, the consistency of the estimator for the true number of change points and the boundedness between the estimated change locations and the true change location are obtained. Some simulated results are given, and the Nile problem is investigated by this method.     

Descriptive tests for the identification of outliers in the errors in variables linear model

In this paper the most commonly used diagnostic criteria for the identification of outliers or leverage points in the ordinary regression model are reviewed. Their use in the context of the errors-in-variables (e.v.) linear model is discussed and evidence is given that under the e.v. model assumptions the distinction between outliers and leverage points no longer exists.     

线性拓扑空间中多目标规划的最优性条件

本文引进了Ｓ－有效性的概念，在目标映射为广义锥－次类凸的条件下，在序线性拓扑空间中讨论了多目标规划的Ｌａｇｒａｎｇｅ乘子，鞍点和几个Ｓ－最优性的必要条件，推广了已有的结果。     

完备度量空间中四个映象的公共不动点

利用度量空间中自映象对相容的条件，讨论了完备度量空间中四个映象的公共不动点的存在性，推广和统一了已有文献中的某些结果．     

集值与单值映像的重合点定理

在度量空间与具有W-凸结构的凸度量空间中,讨论了集值与单值映像对重合点的存在性,所得结论推广了有关文献中相应的结论.     

空间的凸性和远达点映射的连续性

本文给出空间严格凸、CLUB和LUR的新特征刻划,后用这些特征对中一定理作了改进.     

STATISTICAL CHALLENGES OF AIDS: (The 1990 Knibbs Lecture, Canberra, 27 November 1990)

Issues that are central to the understanding and management of the HIV epidemic have generated numerous statistical challenges. This paper considers questions concerning the incubation period, the effects of treatments, pre diction of AIDS cases, the choice of surrogate end points for the assessment of treatments and design of strategies for screening blood samples. These issues give rise to a broad range of intriguing problems for statisticians. We describe some of these problems, how they have been tackled so far and what remains to be done. The discussion touches on topical statistical methods such as smoothing, bootstrapping, interval censoring and the ill-posed inverse problem, as well as asking fundamental questions for frequentist statistics.