村镇连锁经营配送系统关键技术问题分析

论文充分考虑村镇连锁经营配送系统的影响因素．对村镇连锁经营配送系统中的配送中心规划仿真技术和城乡双向物流问题进行深入的技术分析．同时提出了典型的村镇连锁经营管理与配送决策模型。     

中低层灵活就业群体的异同分析与对策

中低层灵活就业群体主要由下岗工人与农民工组成,他们是就业群体中的弱势群体,如何对他们进行更好的制度安排,促进灵活就业的发展,对于缓解就业压力有着积极的意义.中低层灵活就业中的两大类群体在就业方面既存在共性又存在区别,对此进行分析能更好地促进他们实现灵活就业,并为政府采取有针对性的措施提供参考.     

多元化战略在中国旅游企业中的实施效率分析

文章对我国旅游企业的多元化战略管理进行了调查分析,从中总结出旅游企业的多元化战略实施的效率与非效率性的原因。     

Monotonicity of Rank Statistics in some Non–parametric: Testing Problems

For some non–parametric testing problems (one–sided two–sample problem, k –sample trend problem, testing independence against positive dependence) a partial ordering, denoted by ≥, over the alternatives is defined. This partial ordering expresses the strength of the deviation from the null–hypothesis. All familiar rank tests turn out to become more powerful under "increasing" alternatives; that is, all familiar rank statistics preserve the ordering stochastically in samples whenever it is present between underlying distributions. As a tool, the sample equivalence of ≥ is introduced as a partial ordering over pairs of permutations. Functions, defined on pairs of permutations, which preserve this ordering are studied.     

上市公司如何在非理性世界中确定股权回报率

确定股权回报率是进行长期投资决策的关键步骤,但在现实非理性世界中难以直接运用传统财务理论所推荐的资本资产定价模型来确定股权回报率。针对FAR与NEER方法,本文首先探讨这两类方法的理论依据并揭示其本质内涵,然后说明:在非理性世界中,如果上市公司管理者追求公司价值最大化目标,那么就应该基于公司项目的基本风险来确定股权回报率;相反地,如果管理者追求近期股价最大化,那么就应该基于市场投资者的预期来确定股权回报率。     

上市公司偏好低现金股利政策的理论思考

上市公司偏好低现金股利政策,损害了中小投资者的利益,加剧了市场投机行为,降低了经营者的风险意识,已成为我国资本市场正常运行与健康发展的一大障碍。本文通过分析我国上市公司偏好低现金股利政策的负面影响和成因,据此提出相关的政策建议。     

Modelling of repairable systems with various degrees of repair

The availability of a stochastic repairable system depends on the failure behaviour and on repair strategies. In this paper, we deal with a general repair model for a system using auxiliary counting processes and corresponding intensities which include various degrees of repair (between minimal repair and perfect repair). For determining the model parameters we need estimators depending on failure times and repair times: maximum likelihood (ML) estimator and Bayes estimators are considered. Special results are obtained by the use of Weibull-type intensities and random observation times.     

Testing equality of variances in the analysis of repeated measurements

The problem of comparing the precisions of two instruments using repeated measurements can be cast as an extension of the Pitman-Morgan problem of testing equality of variances of a bivariate normal distribution. Hawkins (1981) decomposes the hypothesis of equal variances in this model into two subhypotheses for which simple tests exist. For the overall hypothesis he proposes to combine the tests of the subhypotheses using Fisher's method and empirically compares the component tests and their combination with the likelihood ratio test. In this paper an attempt is made to resolve some discrepancies and puzzling conclusions in Hawkins's study and to propose simple modifications.
The new tests are compared to the tests discussed by Hawkins and to each other both in terms of the finite sample power (estimated by Monte Carlo simulation) and theoretically in terms of asymptotic relative efficiencies.     

四川与东盟旅游服务产业内贸易的核心因素初探

中国-东盟自由贸易区的建设为四川旅游业的发展带来了历史性的契机。在此背景下,四川如何抓住机遇,携手东盟,共谋发展成为了一个研究热点。本文以产业内贸易的视角来观察四川与东盟的旅游业发展状况,运用产业内贸易相关理论分析了影响四川与东盟旅游服务产业内贸易的核心因素,提出了区位条件、产品差异化、需求相似、区域经济协作和规模经济可以提升四川与东盟旅游服务产业内贸易水平,双方可以在较高的产业内贸易水平下,实现共赢。     

监理工程师对混凝土质量验收的数理统计方法

介绍了数理统计方法在深圳市某多层建筑混凝土质量控制中的运用,分析了监理工程师如何运用数理统计公式对混凝土进行质量控制和质量验收的方法．