Kamran Moinzadeh

Bio: Kamran Moinzadeh is an academic researcher from University of Washington. The author has contributed to research in topics: Supply chain & Inventory control. The author has an hindex of 23, co-authored 56 publications receiving 2786 citations.

The Impact of Information Technology Investments on Firm Performance and Evaluation: Evidence From Newly Industrialized Economies

Abstract: The impact of information technology (IT)investments on firm performance has been the subject of active research in recent years. However, findings of almost all studies are based on data collected in the United States. Little work has been done elsewhere to validate these results and to see if they are applicable across national boundaries. In this study, we fill this gap by comparing four newly-industrialized economies (NIEs) with regard to the impact of IT capital on business performance. Secondary data collected from various sources are used to assess the impact over the period from 1983 to 1991. Findings based on four business measures and a market valuation model based on Tobin's q are reported. While the current results are consistent with work done in the United States in general, discrepancies among the four NIEs are observed. Combined with findings from previous work, three pieces of evidence seem to emerge that are generally observed across country boundaries. First, IT investment is not correlated with shareholder's return. Second, there is little evidence that the level of computerization is valued by the market in developed and newly-developed countries. Third, there is no consistent measurement of IT investment as indicated by the mixed results across different performance ratios. Modeling and measurement concerns expressed in previous U.S.-based studies are also observed in our comparative study. Our findings provide a starting point to accumulate a body of comparative studies for the development of a theory that links IT investment, firm performance, and macro factors such as national technology policy in an integrated framework.

A continuous review model for an inventory system with two supply modes

Abstract: In this paper we develop an approximate model of an inventory control system in which there exist two options for resupply, with one having a shorter lead time. Because the optimal policy appears to be extremely complex, we consider a reasonable extension of the standard Q, R policy to allow for two different lot sizes Q1 and Q2, and two different reorder levels, R1 and R2. Expressions for the expected on hand inventory and the expected backorders are developed and a procedure for determining the policy parameters is given. The model is validated by simulation, and calculations are included which compare the average annual cost with and without emergency ordering.

A Multi-Echelon Inventory System with Information Exchange

Abstract: In this paper, we consider a supply-chain model consisting of a single product, one supplier, and multiple retailers. Demand at the retailers is random, but stationary. Each retailer places her orders to the supplier according to the well-known ( Q,R) policy. We assume that the supplier has online information about the demand, as well as inventory activities of the product at each retailer, and uses this information when making order/replenishment decisions. We first propose a replenishment policy for the supplier, which incorporates information about the inventory position of the retailers. Then, we provide an exact analysis of the operating measures of such systems. Assuming the inventory/replenishment decisions are made centrally for the system, we compare the performance of our model with those that do not use information in their decision making, namely, systems that use installation stock policies via a numerical experiment. Based on our numerical results, we identify the parameter settings under which information sharing is most beneficial.

An ( S -1, S ) inventory system with emergency orders

Abstract: In this paper, we develop an approximate model of an inventory control system in which there exist two options for resupply, with one having a shorter lead-time. We assume that demand and the fixed ordering costs are small relative to the holding cost so that a one-for-one ordering policy is appropriate. We consider a policy for placing emergency orders that uses information about the age of outstanding orders. We derive the steady-state behavior of this policy and present some computational results.

Review: information technology and organizational performance: an integrative model of it business value

Abstract: Despite the importance to researchers, managers, and policy makers of how information technology (IT) contributes to organizational performance, there is uncertainty and debate about what we know and don't know. A review of the literature reveals that studies examining the association between information technology and organizational performance are divergent in how they conceptualize key constructs and their interrelationships. We develop a model of IT business value based on the resource-based view of the firm that integrates the various strands of research into a single framework. We apply the integrative model to synthesize what is known about IT business value and guide future research by developing propositions and suggesting a research agenda. A principal finding is that IT is valuable, but the extent and dimensions are dependent upon internal and external factors, including complementary organizational resources of the firm and its trading partners, as well as the competitive and macro environment. Our analysis provides a blueprint to guide future research and facilitate knowledge accumulation and creation concerning the organizational performance impacts of information technology.

Supply Chain Coordination with Contracts

Abstract: Publisher Summary This chapter reviews the supply chain coordination with contracts. Numerous supply chain models are discussed. In each model, the supply chain optimal actions are identified. The chapter extends the newsvendor model by allowing the retailer to choose the retail price in addition to the stocking quantity. Coordination is more complex in this setting because the incentives provided to align one action might cause distortions with the other action. The newsvendor model is also extended by allowing the retailer to exert costly effort to increase demand. Coordination is challenging because the retailer's effort is noncontractible—that is, the firms cannot write contracts based on the effort chosen. The chapter also discusses an infinite horizon stochastic demand model in which the retailer receives replenishments from a supplier after a constant lead time. Coordination requires that the retailer chooses a large basestock level.

Interactive home shopping: Consumer, retailer, and manufacturer incentives to participate in

Abstract: The authors examine the implications of electronic shopping for consumers, retailers, and manufacturers. They assume that near-term technological developments will offer consumers unparalleled opportunities to locate and compare product offerings. They examine these advantages as a function of typical consumer goals and the types of products and services being sought and offer conclusions regarding consumer incentives and disincentives to purchase through interactive home shopping vis-à-vis traditional retail formats. The authors discuss implications for industry structure as they pertain to competition among retailers, competition among manufacturers, and retailer-manufacturer relationships.