组合拍卖竞胜标确定问题的优化方法综述

由于当今组合拍卖在电子商务的理论和实践中具有极其重要意义,因此,国外关于组合拍卖竞胜标确定问题优化方法的研究近年来有了较大的发展。本文根据收集到的丰富资料,对求解这一问题的精确算法、近似算法和启发式算法的最新发展进行综述,并提出了该问题未来的研究方向。     

不完全信息采购环境下的供应链协调问题： 拍卖机制的应用

本文研究了不完全信息采购环境下供应链的协调问题.拍卖不仅是一种价格确定机制,它也可以作为一种供应链协调的机制.文献已经证明拍卖机制对于参与方的收益及整条供应链的有效性具有显著影响.本文研究了当市场中存在n个供应商1个买者的情形下,拍卖环境满足独立私人值(IPV)条件、且市场反需求函数为对数函数时,批发价格拍卖、目录拍卖及二部合同拍卖为各方所产生的期望收入,并且证明了批发价格拍卖和目录拍卖不能实现渠道协调,而在拥有信息中介的二部合同拍卖机制下系统可以达到渠道协调.     

多属性采购拍卖的价值函数与打分规则

在多属性采购中,采购方不仅关心交易价格,更加关注供应商的交货时间和提供的装备质量对其价值的影响。为综合评价供应商的投标,采购方在采购拍卖开始时宣布一个打分规则。本文根据装备采购实践建立多属性采购拍卖的价值函数,以此为基础构建集成了质量属性、提前期属性和价格的三元打分规则。     

开放式逢低买入中买家数量确定的投标决策

逢低买入是一种新型的在线动态价格机制。本文以B2B开放式逢低买入拍卖为研究对象,在买家数量确定且独立投标的条件下,将已有的针对两个价格水平下买家最优订货决策拓展到更复杂的多个价格水平的最优订货决策问题。本文提出的零售商投标决策定理,不仅满足了买家的实际需求,也提高了决策的实用性。     

A goal programming model for paper recycling system

The conflict between economic optimization and environmental protection has received wide attention in recent research programs for waste management system planning. This has also resulted in a set of new waste management goals in reverse logistics system planning. The purpose of this analysis is to formulate a mixed integer goal programming (MIGP) model to assist in proper management of the paper recycling logistics system. The model studies the inter-relationship between multiple objectives (with changing priorities) of a recycled paper distribution network. The objectives considered are reduction in reverse logistics cost; product quality improvement through increased segregation at the source; and environmental benefits through increased wastepaper recovery. The proposed model also assists in determining the facility location, route and flow of different varieties of recyclable wastepaper in the multi-item, multi-echelon and multi-facility decision making framework. The use of the model has been illustrated through a problem of paper recycling in India.     

Network design for reverse logistics

Collection and recycling of product returns is gaining interest in business and research worldwide. Growing green concerns and advancement of green supply chain management (GrSCM) concepts and practices make it all the more relevant. Inputs from literature and informal interviews with 84 stakeholders are used to develop a conceptual model for simultaneous location–allocation of facilities for a cost effective and efficient reverse logistics (RL) network. We cover costs and operations across a wide domain and our proposed RL network consists of collection centers and two types of rework facilities set up by original equipment manufacturers (OEMs) or their consortia for a few categories of product returns under various strategic, operational and customer service constraints in the Indian context.     

连续双向拍卖市场中基于马尔可夫链的交易策略研究

连续双向拍卖市场中交易策略的设计问题远比单向拍卖复杂,本文首先检验了该市场中交易价格的马尔可夫性质,然后据此提出了基于马尔可夫链的自学习动态交易策略,最后通过比较实验发现,该策略明显优于"约束型零信息"策略。     

拍卖中卡特尔的两种合谋机制研究

投标者合谋损害了拍卖者的利益、破坏了社会资源的配置效率.本文通过建立教学模型,研究具有货币补偿支付"强"卡特尔的两种典型合谋机制.发现在卡特尔内部预拍卖中.不同的利益分享机制其成员的汇报价不同.进一步地.当合谋人数等于投标总人数时.第二密封价格的公开拍卖比第一密封价格拍卖更有利于卡特尔的合谋,此时,拍卖者采用隐藏保留价的第一密封价格拍卖,是占优策略.而当卡特尔成员数小于投标总人数时,拍卖者不公布保留价.卡特尔第一价格合谋机制就没有效率,卡特尔第二价格合谋机制在卡特尔代表的估价高于预拍卖第二高价时,合谋非效率.     

Reverse Auctions to Innovate Procurement Processes: Effects of Bid Information Presentation Design on a Supplier's Bidding Outcome

Information technologies (ITs) are being used to innovate various procurement processes. This research study focuses on the supplier‐side effects of IT design choices to conduct reverse auctions, which are increasingly used to procure a wide range of products and services. IT–enabled reverse auctions enhance supplier participation across geographical boundaries, leading to more efficient pricing. However, there are growing concerns about the adverse effects of IT–enabled reverse auctions on a supplier's performance. Supplier‐side issues are gaining prominence in the reverse auction literature and are critical for the long‐term success of reverse auctions. Therefore, we focus on suppliers’ bidding outcomes and assess how the design of an IT–enabled reverse auction facilitates the auction bidding outcomes of participating suppliers. Specifically, we examine the effects of two types of bid information presentation design—full price visibility and partial price visibility—on supplier's auction bidding outcomes, across auctions with different cost certainty and suppliers bargaining power vis‐à‐vis the buyer. The results of this study contribute new knowledge about the ways to use IT for creating effective auction designs and innovating procurement through auctions to enhance both the buyer's and suppliers’ performance. We present the detailed theoretical contributions of our study and discuss the managerial implications for designers of reverse auctions.      

中国证券市场股票回购的可操作性探索

股票回购作为中国证券市场新的资本运作方式,正为许多上市公司所接受,尤其是在当前世界经济低迷时期,更被许多上市公司所采用。在进行该资本运作时,应把握时机,熟悉其操作性,并加强对操作方式的监督与管理。