Recently added articles from Omega:

Supply chain management in the US and Taiwan: an empirical study **.

Oct 01, 2008; Chow, Wing S. ... 1. New competition and supply chain management Enterprises around the world are faced with intense competition. In the new economy, customers require business enterprises to offer better and cheaper products, shorter response times, more product lines, and higher service levels ....

A systematic approach for supply chain conflict detection with a hierarchical Petri Net extension **.

Oct 01, 2008; Blackhurst, Jennifer ... I. Introduction Many companies have undertaken initiatives to coordinate the efforts and activities of the various functional areas and supply chain members--clearly coordination is a key component of successful supply chain management. While collaboration can result in ...

Impacts of demand uncertainty on retailer's dominance and manufacturer-retailer supply chain cooperation **.

Oct 01, 2008; Hua, Zhongsheng ... 1. Introduction Single-period products are products that have only one chance to be ordered and sold in a single-period. The classical single-period newsvendor problem (or briefly called newsvendor problem) is to find a product's order quantity that either maximizes expected ...

Presenting DEA graphically **.(data envelopment analysis)

Oct 01, 2008; Adler, Nicole ... 1. Introduction The purpose of this paper is to suggest a methodology for presenting data envelopment analysis (DEA) graphically. The graphical display method, Co-Plot, is a variant of multi-dimensional scaling [1,2]. Co-Plot locates each decisionmaking unit (DMU) in a ...

Two-stage time minimizing assignment problem **.

Oct 01, 2008; Sonia ... 1. Introduction An assignment problem deals with finding an assignment of n facilities to n jobs such that each facility is assigned to a unique job, on a job only one facility works and work on all the jobs start in parallel. If I is the index set of n facilities and J of n ...

Price competition, cost and demand disruptions and coordination of a supply chain with one manufacturer and two competing retailers **.

Oct 01, 2008; Xiao, Tiaojun ... 1. Introduction Conventionally, a major body of the literature on supply chain coordination management investigates a static coordination mechanism under a deterministic environment such as a known market demand and production cost. However, after the plan was settled down, the ...

An AHP-based evaluation procedure for Innovative Educational Projects: a face-to-face vs. computer-mediated case study **.(Case study)

Oct 01, 2008; Melon, Monica Garcia ... 1. Introduction As a result of reforms in Study Plans, the Politechnical University of Valencia (henceforth University) has been developing an Educational Innovation Projects (hence forth EIP) for the last five years. The aim of these projects is to initiate a process of ...

Application of the multi-criteria analysis method Electre III for the optimisation of decentralised energy systems **.

Oct 01, 2008; Papadopoulos, Agis ... 1. Introduction Over the last decade, Europe has put significant effort into developing a common strategy in the energy sector. One of the priorities of this strategy is the protection of the environment, placing special emphasis on the promotion of renewable energy sources ...

Analysis of postponement strategy by EPQ-based models with planned backorders.

Oct 01, 2008; Li, Jian ... 1. Introduction In order to meet the needs of increasingly demanding customers for more diverse products, many companies have reconfigured their supply chain structures to accommodate mass customization. The new structures often involve either delaying the delivery of the ...

The impact of autonomy on information systems planning effectiveness **.

Oct 01, 2008; Mirchandani, Dinesh A. ... 1. Introduction Several studies have sought to understand the organizational structures and strategies employed by multinational firms to coordinate, control, and integrate globally distributed facilities, and have often yielded contradictory results [1]. Some have revealed that ...

Evaluating manufacturer's buyback policies in a single-period two-echelon framework under price-dependent stochastic demand **.

Oct 01, 2008; Arcelus, F.J. ... 1. Introduction The decision problem of a retailer facing uncertain demand in a single period framework, referred to as the News-Vendor Problem (NVP), has been extensively researched over decades. Earlier versions considered the selling price constant, leaving the buyer with the ...

A grounded theory research approach to building and testing TQM theory in operations management **.

Oct 01, 2008; McAdam, Rodney ... 1. Introduction Increasing competition, complexity and technology development in the business environment has led to significant challenges within the field of total quality management (TQM) [1]. Traditional TQM approaches and resultant models (e.g. Business Excellence Model ...

Vertical cost information sharing in a supply chain with value-adding retailers **.

Oct 01, 2008; Yao, Dong-Qing ... Abstract We consider a supply chain consisting of one supplier and two value-adding heterogeneous retailers. Each retailer has full knowledge about his own value-added cost structure that is unknown to the supplier and the other retailer. Assuming there is no horizontal ...

An economic evaluation model of product mix flexibility **.

Oct 01, 2008; Gong, Zhejun ... 1. Introduction Manufacturing enterprises face severe competition. The ability to deal with external and internal uncertainties decides an enterprise's development and fate. Flexibility is now one of the more important strategic goals of many enterprises. Adam and Swamidass ...

Coordinating a three level supply chain with flexible return policies **.

Oct 01, 2008; Ding, Ding ... 1. Introduction Supply chain is a network of suppliers, manufacturers, distributors, retailers and customers. When a supply chain is decentralized controlled, two well-known reasons will lead to inefficient performance of the system. The first reason is information asymmetry. A ...

Inventory management with variable lead-time dependent procurement cost **.

Oct 01, 2008; Chandra, Charu ... 1. Introduction 1.1. Problem area Demand uncertainty coupled with inventory replenishment lead-time creates the inventory carrying risk. Lead-time reduction and application of risk reducing inventory management policies have been shown to improve efficiency in ...

Optimization models for the tool change scheduling problem **.

Oct 01, 2008; Chen, Jen-Shiang ... 1. Introduction In the conventional single machine scheduling problem, the assumption is always that the machine is continuously available. In practice, however, we often encounter situations in which the machine may be unavailable for a certain period of time for different ...

R&D project evaluation: an integrated DEA and balanced scorecard approach **.

Oct 01, 2008; Eilat, Harel ... 1. Introduction This paper develops an analytical model aimed at evaluating research and development (R&D) projects in different stages of their life cycle. It may be applied to project proposals--as part of a project selection procedure, or to ongoing projects--during their ...

On step fixed-charge transportation problem **.

Oct 01, 2008; Kowalski, Krzysztof ... 1. Introduction The fixed-charge transportation problem (FCTP) has been a popular research topic in mathematical programming for quite some time. Its structure is almost identical with that of a classical transportation problem (TP). An abundance of algorithms, heuristic and ...

Letter to the editor.(Letter to the editor)

Oct 01, 2008; Nikandish, Naser ... In a previously published paper by Lee, "A joint economic lot size model for raw material ordering, Manufacturing setup, and finished goods delivering", Omega vol. 33, Issue 6, pp. 163-174, we found that Eqs. (6a) and (6b) on page 167 should be as follows: ...