Thesis ( Ph.D. ) -- University of Texas at Arlington, 2008.

Thesis (M. Phil.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 275-286).

The dissertation consists of three essays. In the first essay, I analyze the dynamic interactions in a decentralized distribution channel, composed of a manufacturer and a retailer, to launch an innovative durable product (IDP) whose underlying retail demand is influenced by word-of-mouth from past adopters and follows a Bass-type diffusion process. The word-of-mouth influence creates a trade-off between immediate and future sales/ profits, resulting in a multi-period dynamic supply chain coordination problem. The analysis shows that the manufacturer and retailer may have conflicts regarding their trade-offs and preferences between immediate and future profits. I characterize equilibrium pricing strategies and the resulting sales and profit trajectories. Surprisingly, I find that the manufacturer, and sometimes even the retailer, is better off with a myopic retailer strategy in some cases. Furthermore, I propose that revenue sharing contracts can coordinate the IDP supply chain throughout the entire planning horizon. In the second essay, I extend the demand model by considering the impact of shelf space allocation on the retail demand of an IDP. I assume the retail demand to be an increasing and concave function of the merchandise displayed on the shelf. I include a linear cost of shelf space in the retailer's objective function. I characterize the optimal dynamic shelf space allocation and retail pricing policies for the retailer and wholesale pricing policies for the manufacturer. I find that a myopic retailer allocates the constant amount of shelf-space to the IDP over the selling horizon, whereas the shelf space allocated to the IDP by a far-sighted retailer varies over time. Consistent with the first essay, the manufacturer and the retailer have conflict over the retailer's profitability strategy. In the third essay, I review the Stackelberg differential game models that study such issues in dynamic environments as production and inventory policies, outsourcing decisions, channel coordination, and competitive advertising. I introduce the basic concepts of the basics of the Stackelberg differential games. I focus on the models that derive the Stackelberg equilibria in the area of supply chain management and marketing channels.

The three essays in this thesis address various problems in the general area of supply chain management. In general, supply chain management is concerned with management of the flow of goods, information, and funds among supply chain members, such as suppliers, manufacturers, distributors, retailers, and consumers. As such, its scope includes timing and quantity of material flow, logistics, improving efficiencies in problems with several decision makers, etc. The first essay in this thesis considers the problem of improving coordination in a decentralized system of retailers, while the second one addresses stability and profitability of Internet-based supply exchange alliances. The third essay analyzes a logistics problem, of finding an optimal route for a capacitated vehicle which travels on a graph and which can perform pickups and deliveries. In the first essay, we study a three-stage model of a decentralized distribution system with n retailers who each faces a stochastic demand for an identical product. In the first stage, before the demand is realized, each retailer independently orders her initial inventory. In the second stage, after the realization of the demand, each retailer decides what portion of her residual supply/demand she wants to share with the other retailers. In the third stage, residual inventories are transshipped in order to possibly meet residual demands, and an additional profit is allocated among the retailers. We study the effect of implementing various allocations rules in the third stage on the levels of the residual supply/demand the retailers are willing to share with others in the second stage, and the tradeoff involved in achieving a solution which is also optimal for the corresponding centralized system. The second essay is concerned with the formation of Internet-based supply exchange alliances among three or fewer retailers of possibly substitutable products. We provide some conditions, in terms of product substitutability and quality of suppliers, which would lead to the formation of a three member alliance, or a two member alliance, or no alliance at all. We also study the effect of alliance structure and quality of suppliers on the profit of a retailer. The third essay considers a vehicle routing problem with pickups and deliveries (VRPD problem) on some special graphs. Some vertices on the graph represent delivery customers, and other vertices represent pickup customers. The objective is to find a minimum length tour for a capacitated vehicle, which starts at a depot and travels on the graph while satisfying all the requests by the customers without violating the vehicle capacity constraint, and returns to a depot. We have developed linear time algorithms for the VRPD problem on a path and on tree graphs, linear and O (|V| log |V|) algorithm for a VRPD problem defined on a path with parametric initial capacity, and quadratic and O (|V|² log |V|) algorithms for a VRPD problem defined over a cycle graph.

No description available.

No description available.

Thesis (MEng(TransportSystemsEng))--University of South Australia, 2004.

Thesis (DBA(DoctorateofBusinessAdministration))--University of South Australia, 2003.

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

Thesis (M.S.)--Ohio University, March, 2001. / Title from PDF t.p.