CUSTOMER SERVICE IN THE INTERNET‐ENABLED LOGISTICS SUPPLY CHAIN: WEBSITE DESIGN ANTECEDENTS AND LOYALTY EFFECTS

This article extends the existing research on logistics customer service‐loyalty relationships to the online logistics supply chain environment by examining potential website determinants of logistics customer service quality. A structural equation analysis of 373 online shopping transactions suggests that perceived quality of all logistics customer service activities (perceived cycle time, in‐stock availability, and customer responsiveness) varies inversely with: (1) perceived ease of use, and (2) content vividness of the website; and positively with product information content. However, only retailer customer responsiveness assessment was found to have any significant influence on consumer intended loyalty behavior in Internet‐enabled supplies chains.     

构建社会主义和谐社会的制度分析

制度安排是社会状态函数的一个关键性变量，因此，相应的制度安排是构建社会主义和谐社会的关键之所在。而和谐的制度安排应立足于其根本的“基础设施”——政府、市场、社会自身及其关系的和谐，然后构建其对策性的制度安排：合理的利益协调机制、利益沟通与谈判的机制、有序的社会流动机制、表达与参与机制、以社会公平、正义为核心的价值评价机制。     

规范收入分配秩序 推进收入分配改革

改革开放三十多年来,中国居民收入大幅增长,但分配失衡的问题也日益凸显。收入分配秩序是否合理直接关系到收入分配的结果是否公平,关系到经济增长的好处能否有效地惠及各个阶层。因此,本文认为推进收入分配改革,首先应规范收入分配秩序。本文采用对比分析和实证分析的方法,总结出当前我国收入分配秩序中存在的主要问题:垄断行业工资过高、公务员工资制度不合理,灰色收入多,农民工工资低且拖欠现象严重,税收调节力度不够。最终提出了规范当前收入分配秩序的政策建议。     

Order release planning with clearing functions: A queueing-theoretical analysis of the clearing function concept

We consider the problem of planning future order releases in hierarchical production planning and control systems. An established research direction is the clearing function concept: the planned material flow through a production unit is modelled by inventory balance equations for WIP and final products, and the consequences of the stochastic properties of the material flow are modelled by clearing functions, which is the functional relationship between the level of WIP and the maximum output of a work centre in a period.Using a transient M/M/1 model, our paper shows that the usual definition of a nonlinear clearing function suffers from substantial shortcomings concerning both the definition of the function and empirical estimation of its parameters. We propose an alternative transient clearing function and derive a procedure for its parameterization.     

New batch construction heuristics to optimise the performance of order picking systems

Two new batch construction heuristics called K-means Batching (KMB) and Self-organisation Map Batching (SOMB) are developed and verified by simulation experiments. Both KMB and SOMB have a preferment of superior performance in total travel distance and average picking vehicle utility, and even a conspicuous improvement in total CPU running time. Besides, this paper investigates the overall performance of order picking systems integrating storage assignment, order batching and picker routing to find the optimal policy combinations under different order types. The sensitivity analysis is performed to distinguish the relative importance of the various strategies to enhance the performance of operations management.     

透明度变化对股票市场投资者委托单提交行为和交易成本影响研究

基于2003年12月8日沪深交易所交易前市场透明度改革背景,本文利用一家营业部的投资者报价和交易数据,研究同一个机构投资者和散户投资者在透明度改革前后委托单提交激进程度的变化,以及这种变化对其完成交易的成本的影响。我们发现,透明度改革前后,机构投资者的委托单提交激进程度都显著大于散户投资者的委托单提交激进程度。透明度增加以后,机构投资者的委托单激进程度显著减少,而散户投资者的委托单提交激进程度增加。同时发现,透明度增加以后,机构投资者通过分拆委托单,增加交易次数,导致完成交易的时间增加,但价格影响力基本没有变化,散户投资者的成交时间和价格影响力有显著改善。     

Evaluating expectations of <Emphasis Type="Italic">L</Emphasis>-statistics by the Steffensen inequality

By combining the Moriguti and Steffensen inequalities, we obtain sharp upper bounds for the expectations of arbitrary linear combinations of order statistics from iid samples. The bounds are expressed in terms of expectations of the left truncated parent distribution and constants that depend only on the coefficients of the linear combination. We also present analogous results for dependent id samples. The bounds are especially useful for L-estimates of the scale parameter of the distribution.     

Foreign exchange customers and dealers: Who’s driving whom?

This paper tests the theoretical assumption of the foreign exchange market microstructure that dealers and non-dealer customers interact over discrete trading rounds. An exhaustive frequency-domain analysis reveals that the interaction is limited and mainly due to the instability of financial markets. The principal finding is that the trading activity of dealers is able to predict the customer order flow at low frequencies with wavelengths longer than roughly a week. In all, the evidence shows that non-financial customers are not as passive as some other research has suggested.     

遗赠、婚外同居与公序良俗

《民法典》继承制度延续了《继承法》,最终并未采纳特留份制度。自比较法角度看,《民法典》继承制度的重要特色在于注重扶养或需要,避免不加限制的“不劳而获”。在向婚外同居者遗赠情形中,生存配偶非基于扶养或需要而主张违反遗嘱意思的继承,不符合我国继承制度缓解“不劳而获”思想的特点,可不予支持。向婚外同居者遗赠的法律行为,若不涉及金钱和婚外同居的交换——如与婚外同居者订立遗赠扶养协议,则不应以违反公序良俗为由认定其无效。婚外同居者违反夫妻忠实义务可在夫妻关系的法律规定中寻求解决之道。     

Optimal execution with uncertain order fills in Almgren–Chriss framework

The classical price impact model of Almgren and Chriss is extended to incorporate the uncertainty of order fills. The extended model can be recast as alternatives to uncertain impact models and stochastic liquidity models. Optimal strategies are determined by maximizing the expected final profit and loss (P&L) and various P&L-risk tradeoffs including utility maximization. Closed form expressions for optimal strategies are obtained in linear cases. The results suggest a type of adaptive volume weighted average price, adaptive percentage of volume and adaptive Almgren–Chriss strategies. VWAP and classical Almgren–Chriss strategies are recovered as limiting cases with a different characteristic time scale of liquidation for the latter.