Efficient local IV estimation of an empirical auction model

In this paper we examine semiparametric efficiency bounds and efficient estimators for the case of a linear local instrument variable (LIV) model under the assumptions studied in Abadie et al. (2002). We apply the semiparametrically efficient estimation method to analyze the relation between bid dispersion and early bidding in an online auction dataset, which is collected from a natural experiment conducted in Nekipelov (2007). The results confirm the theoretical findings developed in Nekipelov (2007). The semiparametric efficient estimation procedure substantially improves the statistical significance of the effect of jump bidding on bid dispersion.     

Revealing information in auctions: the allocation effect

When there are two bidders, releasing independent information in an English auction with private values makes the seller worse off. However, this is no longer true with more bidders: when there is enough competition, revelation benefits the auctioneer. In three examples the dividing case is shown to be three bidders. This allocation effect applies to other standard auctions and parallels the bundling decision in a multi-unit auction. I would like to thank Jeremy Bulow, Willie Fuchs, Paul Klemperer, Rob McMillan, Phil Reny, Jeff Zwiebel and especially Andy Skrzypacz. I also grateful to two referees and an Associate Editor for a number of helpful comments.     

基于SCP范式的中国在线旅游服务业实证研究

国内旺盛的商务旅游和自助旅游需求以及互联网的飞速发展催生了中国在线旅游服务业;在线旅游服务业目前正处于其生命周期的快速增长阶段,它的发展已经成为旅游业的一个热点。本文运用产业组织理论的分析框架对在线旅游服务业的现状进行了分析。     

SMEs and public procurement policy

In this paper, we characterize an optimal procurement policy as a mechanism design problem when an allotment of the contract is available, i.e., when a government faces both SMEs and large firms for carrying out a heterogeneously divisible project. Our model allows us to analyze all procurement policies (set-asides, favoritism, non-discriminatory rules), taking into account both efficiency and distributive arguments and derive a normative framework. We show that set-asides are not generally optimal, whatever the industrial preferences of the government are, while the optimal preferential treatments of firms implies complex non-linear rules. We prove that the optimal policy can be implemented using a modified Vickrey-type auction. We also consider that the firms can reduce their cost by a non observable effort, and exhibit the specific impact of cost reduction incentives on the optimal policies.Received: 24 September 2001, JEL Classification: D44Pierre-HenriMorand : I am grateful to the anonymous referees for comments. The usualdisclaimer applies.     

Position auctions

I analyze the equilibria of a game based on the ad auction used by Google and Yahoo. This auction is closely related to the assignment game studied by Shapley–Shubik, Demange–Gale–Sotomayer and Roth–Sotomayer. However, due to the special structure of preferences, the equilibria of the ad auction can be calculated explicitly and some known results can be sharpened. I provide some empirical evidence that the Nash equilibria of the position auction describe the basic properties of the prices observed in Google's ad auction reasonably accurately.     

Re-examining online customer experience to include purchase frequency and perceived risk

This research examines the important emerging area of online customer experience (OCE) using data collected from an online survey of frequent and infrequent online shoppers. The study examines a model of antecedents for cognitive and affective experiential states and their influence on outcomes, such as online shopping satisfaction and repurchase intentions. The model also examines the relationships between perceived risk, trust, satisfaction and repurchase intentions. Theoretically, the study provides a broader understanding of OCE, through insights into two shopper segments identified as being important in e-retailing. For managers, the study highlights areas of OCE and their implications for ongoing management of the online channel.     

Fulfillment source allocation,inventory transshipment,and customer order transfer in e-tailing

We consider an inventory fulfillment-allocation and transshipment problem in an e-tailing environment. For a typical e-tailer, each customer demand is fulfilled from the closest fulfillment center if there are enough inventories. Otherwise, the e-tailer would transship stock from a nearby facility or transfer the customer order so it is fulfilled from another facility, depending on the economics of transportation. We develop a mixed-integer programming model to help e-tailers optimally fulfill customer orders while minimizing logistics costs. We propose a Benders decomposition-based approach to efficiently find optimal solutions. Our computational results demonstrate the importance of considering inventory transshipments in online deliveries.     

U.S. online shopping: Facts,fiction, hopes and dreams

Much online shopping research has been viewed from the seller׳s side, i.e., volume, timing and the like. This paper looks at online shopping/buying from the buyer׳s view. Based on 285,000+ individual responses from an online U.S. panel, the questionnaires, gathered between 2006 and 2013, form the analytical base. Findings include an increase in online shopping volume among a declining customer base. Consumer reported details such as leading online retailers (Amazon.com), online product preferences, comparisons of online and fixed location research and buying scenarios, buying influences and the like are discussed. Managerial implications and suggestions for future research are included.     

From Multi-Channel Retailing to Omni-Channel Retailing: Introduction to the Special Issue on Multi-Channel Retailing

The world of retailing has changed dramatically in the past decade. The advent of the online channel and new additional digital channels such as mobile channels and social media have changed retail business models, the execution of the retail mix, and shopper behavior. Whereas multi-channel was in vogue in the last decade in retailing, we now observe a move to so-called omni-channel retailing. Omni-channel retailing is taking a broader perspective on channels and how shoppers are influenced and move through channels in their search and buying process. We discuss this development conceptually and subsequently discuss existing research in this multi-channel retailing. We also introduce the articles in this special issue on multi-channel retailing and position these articles in the new omni-channel movement. We end with putting forward a research agenda to further guide future research in this area.     

An overview of Internet-based surveys in hospitality and tourism journals

Survey research has reached an era when the Internet is commonly used as a research tool in different fields of study. Yet, the use of this method in tourism and hospitality research has not been fully explored. This study provides a state-of-the-art assessment of journal publications in the past ten years to reveal how the Internet has been incorporated into tourism and hospitality research. Various aspects of online research in tourism and hospitality are identified via reviewing relevant articles retrieved from the EBSCOhost.