Articles scientifiques

Analysis and Optimization of a Combined Make-to-Stock and Make-to-Order Multiproduct Manufacturing System

K. Hadj Youssef, C. VAN DELFT, Y. Dallery

Journal of Applied Mathematics and Decision Sciences

2009, vol. 2009, n°ID 716059

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)

We consider a single-stage multiproduct manufacturing facility producing several end-products for delivery to customers with a required customer lead-time. The end-products can be split in two classes: few products with high volume demands and a large number of products with low-volume demands. In order to reduce inventory costs, it seems efficient to produce the high-volume products according to an MTS policy and the low volume products according to an MTO policy. The purpose of this paper is to analyze and compare the impact of the scheduling policy on the overall inventory costs, under customer lead-time service level constraints. We consider two policies: the classical FIFO policy and a priority policy (PR) which gives priority to low volume products over high volume products. We show that for some range of parameters, the PR rule can significantly outperform the FIFO rule. In these ranges, the service level constraints are satisfied by the PR rule with much lower inventory costs.

Citizen Trust Development for E-Government Adoption and Usage: Insights from Young Adults in Singapore


Communications of the AIS

2009, vol. 25, n°31, pp.359-378

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)

Trust, which has been found to be a significant facilitator for the adoption and usage of new business paradigms like e-commerce, is relatively unexplored in the context of e-government. Using trust literature as the theoretical lens, we propose an e-government trust grid for the adoption and usage of e-government, comprising two dimensions: 'trust in government' and 'trust in Internet technology.' Based on their levels of trust in the two identified dimensions, nations can fall into one of four quadrants: Adversarial, Competitive, Cooperative, and Collaborative. Using focus groups and interviews with young adults in Singapore, we find that in recent years, Singapore is evolving from the cooperative (low trust in Internet technology and high trust in government) to the collaborative (high trust in Internet technology and high trust in government) quadrant. The study delineates a set of lessons learned from the Singapore experience for engendering citizen trust in e-government. These lessons for governments are: solicit feedback from citizens, demonstrate top leadership commitment and support, build institutional trust, cultivate IT literacy, and enact comprehensive and effective legal systems.

Competing technology options and stakeholder interests for tracking freight railcars in Indian Railways


Journal of Information Technology

décembre 2009, vol. 24, n°4, pp.392-400

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)

Mots clés : RFID, GPS, Technology choice, Options, Railroad, India

This teaching case examines the implementation of a new technology for tracking individual freight railcars (wagons) by Indian Railways. After exploring multiple ‘technological options,’ the Indian Railways decided to undertake a pilot project based on time-tested Automatic Equipment Identification system using Radio Frequency Identification (RFID) technology. However, a number of other technological options are now available, which include EPC Gen2-based RFID systems, Global Positioning System solutions, Optical Character Recognition (OCR)-based systems, and manual hand-held data collection devices integrated with the current Freight Operations System. Each of these systems has its own advantages and limitations. Although Indian Railways officials are going ahead with the pilot project, they are uncertain as to the appropriate technological choice, given the wide range of available technology options. Further, they are faced with competing interests from different stakeholder groups (departments), who favor different technologies.

Entrepreneuriat familial et stratégies de pérennité. Conception au concept d'innovation prudentielle


Management International

2009, vol. 14, n°1, pp.25-41

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)

Mots clés : Innovation, Entrepreneuriat familial, Pérennité, Etude de cas Innovation, Family business, Sustainability, Case study

L’objectif de cette recherche est d’analyser les comportements en matière d’innovation d’entreprises familiales pérennes. Une analyse de données secondaires constituées de témoignages relatifs à l’innovation dansdes firmes familiales pérennes met en évidence la recherche constante d’arbitrage entre stabilité et renouvellement, et le poids des traditions agissant comme garde-fou des stratégies d’innovation. Puis, des choixstratégiques d’innovation réalisés par une entreprise familiale pérenne sont analysés en profondeur et permettent de spécifier le concept d’innovation prudentielle. Cette notion est ensuite précisée à l’aide de sept caractéristiques puisant toutes leur origine dans les traits communément acceptés des firmes familiales pérennes

ERP Competence-Building Mechanisms: An Exploratory Investigation of Configurations of ERP Adopters in the European and U.S. Manufacturing Sectors

A. MASINI, L. Van Wassenhove

Manufacturing & Service Operations Management

printemps 2009, vol. 11, n°2, pp.274-298

Départements : Informations Systems and Operations Management, GREGHEC (CNRS)

This paper contributes to the literature on enterprise resource planning (ERP) by pursuing two objectives. First, it identifies configurations of ERP adopters that have similar needs and develop similar competencies. Second, it tests the hypothesis that, to maximize benefits from their ERP projects, organizations should align their ERP competence-building mechanisms with the ERP needs that arise from their operational environment. The analysis of a sample of manufacturing companies that implemented ERP between 1995 and 2001 uncovers four distinct configurations representing different degrees of fit between needs and competence-building mechanisms: the frugal ERP, the extensive business process reengineering (BPR), the adaptive ERP, and the straitjacket. The results support our hypothesis and suggest that the consequences of a misfit between needs and competence-building mechanisms are more severe for companies that operate in complex and dynamic environments and have informal organizational structures than for firms with rigid structures that operate in simple and stable environments. Key Words: enterprise resource planning (ERP); operations strategy; information and communication technology; empirical research; cluster analysis


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