供应链企业间的合作轨道模型

文章主要介绍了轨道模型在供应链企业合作中的应用 ,根据合作程度的不同 ,伙伴企业处于以核心企业为中心的不同轨道。文章分别从静态和动态的角度运用轨道模型分析了企业间合作关系以及这种合作关系的变化。一方面使企业间的合作问题简单化 ;另一方面 ,轨道模型便于对合作问题进行深入的定量化研究。     

Missing data and forecasting in multivariate time series: An application of the common components dynamic linear model

Summary The paper deals with missing data and forecasting problems in multivariate time series making use of the Common Components Dynamic Linear Model (DLMCC), presented in Quintana (1985), and West and Harrison (1989). Some results are presented and discussed: exploiting the correlation between series, estimated by the DLMCC, the paper shows as it is possible to update state vector posterior distributions for the unobserved series. This is realized on the base of the updating of the observed series state vectors, for which the usual Kalman filter equations can be applied. An application concerning some Italian private consumption series provides an example of the model capabilities.     

试论企业的环境成本管理

近年来随着人们环保意识的增强,企业对环境成本的管理日趋重视。本文从环境成本的内涵入手,阐述了环境成本的管理指导思想,并提出了环境成本管理的方法。     

跨文化交际中的时空观念差异

不同文化背景的人,由于受不同文化传统的影响,其思维方式不同,在人际交往中的时间观念(如时间顺序排列、时间取向、遵守时间的态度)和空间观念(如对体距的认识、对个人领地的态度等)也存在差异。这些差异往往容易被人们忽视,从而影响交际的正常进行,甚至导致交际的失败。因此,在交往中我们应该正确对待文化差异,自觉排除文化差异的干扰。     

南非物流成本统计方法研究

宏观物流成本是评价一个国家经济发展质量的重要指标,客观、科学地统计宏观物流成本具有非常重要的意义。在系统地介绍了南非物流成本统计模型中的分解与合计统计方法的基础上,着重介绍了合计方法。合计方法是按每一种产品的生产量分别进行统计,比较符合物流运作的实际情况,可以为中国物流成本统计方法的改进提供有益的参考和借鉴。     

Sampling Returns for Realized Variance Calculations: Tick Time or Transaction Time?

This article introduces a new model for transaction prices in the presence of market microstructure noise in order to study the properties of the price process on two different time scales, namely, transaction time where prices are sampled with every transaction and tick time where prices are sampled with every price change. Both sampling schemes have been used in the literature on realized variance, but a formal investigation into their properties has been lacking. Our empirical and theoretical results indicate that the return dynamics in transaction time are very different from those in tick time and the choice of sampling scheme can therefore have an important impact on the properties of realized variance. For RV we find that tick time sampling is superior to transaction time sampling in terms of mean-squared-error, especially when the level of noise, number of ticks, or the arrival frequency of efficient price moves is low. Importantly, we show that while the microstructure noise may appear close to IID in transaction time, in tick time it is highly dependent. As a result, bias correction procedures that rely on the noise being independent, can fail in tick time and are better implemented in transaction time.     

运用作业成本法进行客户盈利能力分析的思考

不同的成本计算方法导致不同的成本计算结果，并影响到客户盈利能力的评价结果。传统成本计算法掩盖了客户盈利能力的真实信息，而作业成本法通过区分直接成本和间接成本，找出间接成本的成本动因，将间接成本依据成本动因追溯到特定客户，提高了客户盈利能力评价结果的可靠性。按照作业成本法的基本原理，推导出客户盈利能力分析的基本流程和成本计算模型，再通过实际案例说明其具体过程，并讨论了作业成本法在企业客户管理方面的实践运用。研究表明，作业成本法较之传统成本法明显提高管理者在分析客户盈利能力时的准确性，为制定客户管理决策提供科学的参考。     

时间如何前进——进化论随笔

中国古代"与时偕行"、"与时俱化"的观念,以取法天地四时的运行为基准,是一种四时循环论的变化观.我党提出的"与时俱进"思想的含义,是随着时代的前进而前进,和随着时代的变化而变化,体现了鲜明的时代创新精神,它的哲学基础是科学进化论.这一特征在语词上通过一个"进"字表达出来.虽然"与时俱进"和"与时俱化"只有一字之差,却体现了本质的超越.同时,这一表述通过对中国古代<易经>、<庄子>等经典的吸收,丰富了自身的思想内涵,也建立,了联接传统与现代的一道桥梁.当然,由于现代时间观念的一维性质,使得人们在批驳"直线进化论"的同时,易于陷入"时间进化论",而时间进化论实际上也是一种直线进化论,这也是需要警醒的.     

An Experimental Evaluation of the Serial Cost Sharing Rule

This paper proposes an experimental test to evaluate the performance of the serial cost sharing rule, originally proposed by Shenker [Sigmetrics, 241–242 (1990)] and then analyzed by Moulin and Shenker [Econometrica 60, 1009–1037 (1992)]. We report measures of the performance and efficiency of the serial mechanism by comparing the choices and payoffs attained by the subjects to the expected equilibrium allocations. Experimental evidence shows that learning is needed for the subjects to converge to the equilibrium strategy. However, in terms of efficiency, the serial mechanism leads to almost efficient allocations.     

试述小说《色·戒》的叙事技巧

在小说《色·戒》中,张爱玲运用现代叙事方式显示出其作品独特的叙事魅力。这里运用叙述学理论,从形式角度详尽剖析张爱玲小说现代叙事艺术,指出个人叙事对宏大叙事的消解、限知视角对全知视角的侵入、叙事时间对故事时间的超越是小说《色·戒》叙事的主要特色。