Simiane-Collongue, France

EMLYON Business School
Simiane-Collongue, France

EMLYON Business School is a French business school. It was founded in Lyon in 1872 by the local business community, and is affiliated to the Lyon Chamber of Commerce and Industry. It has triple accreditation: EQUIS by the EFMD, AMBA, and the AACSB. Its Msc in Management is currently ranked 11th worldwide and its MBA program is currently ranked 92 worldwide, according to the Financial Times.EMLYON has three campuses: the Lyon campus, the Saint-Etienne campus, and the Shanghai campus, located within the grounds of East China Normal University . A Eurasian Business School will be co-established by EMLYON and ECNU in 2016. Wikipedia.

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Dattee B.,EMLYON Business School
Journal of Engineering and Technology Management - JET-M | Year: 2016

In many empirical cases of technological substitution, the diffusion dynamics bifurcate and the sales of the incumbent technology suddenly shift from the smooth end-of-life pattern anticipated by classical diffusion models directly into the convex end-of-life phase. These sudden convex drops lead to significant differences in cumulative sales compared to forecasts used for selecting a firm's technological capabilities. This paper develops an integrative model whose structure includes key interactions between performance trajectories, price dynamics, market heterogeneity, and information. Simulation results explain the underlying dynamics of convex drops, provide a boundary condition for the phenomenon, and extend the notion of demand heterogeneity. © 2017 Elsevier B.V.

Benlian A.,TU Darmstadt | Titah R.,EMLYON Business School | Hess T.,Ludwig Maximilians University of Munich
Journal of Management Information Systems | Year: 2012

Despite the importance of online product recommendations (OPRs) in e-commerce transactions, there is still little understanding about how different recommendation sources affect consumers' beliefs and behavior, and whether these effects are additive, complementary, or rivals for different types of products. This study investigates the differential effects of provider recommendations (PRs) and consumer reviews (CRs) on the instrumental, affective, and trusting dimensions of consumer beliefs and shows how these beliefs ultimately influence continued OPR usage and product purchase intentions. This study tests a conceptual model linking PRs and CRs to four consumer beliefs (perceived usefulness, perceived ease of use, perceived affective quality, and trust) in two different product settings (search products versus experience products). Results of an experimental study show that users of PRs express significantly higher perceived usefulness and perceived ease of use than users of CRs, while users of CRs express higher trusting beliefs and perceived affective quality than users of PRs, resulting in different effect mechanisms toward OPR reuse and purchase intentions in e-commerce transactions. Further, CRs were found to elicit higher perceived usefulness, trusting beliefs, and perceived affective quality for experience goods, while PRs were found to unfold higher effects on all of these variables for search goods. © 2012 M.E. Sharpe, Inc. All rights reserved.

Rekik Y.,EMLYON Business School | Sahin E.,École Centrale Paris
International Journal of Production Research | Year: 2012

Motivated by empirical evidence, this article focuses on the behaviour of a store inventory exposed to inventory record inaccuracy. The inventory, controlled by an infinite horizon, single-stage, single-product periodic-review policy, is subject to shrinkage errors that cause a difference between the physical and information system inventory levels. We model a set of scenarios depending on the technology available to track shrinkage in the store. In scenarios where a technology such as Radio Frequency IDentification (RFID) is not used, inventory is controlled by estimating the expected shrinkage rate. We assume that an inspection process is performed at a regular frequency of N selling periods. We analyse two situations that permit management of the joint ordering and inspection policy based on the information the inventory manager has on shrinkage errors. A comparison between these two situations permits us to analyse the impact of shrinkage errors and the value of taking into account the inventory inaccuracy issue when optimising the inventory and inspection policies. The deployment of the RFID technology produces two benefits: total visibility of the shrinkage rate and the elimination of shrinkage errors. A comparison of the scenarios enables us to evaluate the economic impact of inventory record inaccuracies, which can be significant, particularly in systems with a poor estimation of the error parameter as well as with a high inspection cost. © 2012 Copyright Taylor and Francis Group, LLC.

Bertoni F.,EMLYON Business School | Tykvova T.,University of Hohenheim
Research Policy | Year: 2015

This paper explores whether and how governmental venture capital investors (GVCs) spur invention and innovation in young biotech companies in Europe. To gauge invention we focus on the simple patent stock at the company level, while innovation is proxied by the citation-weighted patent stock. Our findings indicate that GVCs, as stand-alone investors, have no impact on invention and innovation. However, GVCs boost the impact of independent venture capital investors (IVCs) on both invention and innovation. We conclude that GVCs are an ineffective substitute, but an effective complement, of IVCs. We also distinguish between technology-oriented GVCs (TVCs) and development-oriented GVCs (DVCs). We find that DVCs are better at increasing firm's inventions, and that TVCs, combined with IVCs, support innovations. © 2015 Elsevier B.V.

Mirzapour Al-e-Hashem S.M.J.,France Business School | Rekik Y.,EMLYON Business School
International Journal of Production Economics | Year: 2014

This paper addresses a multi-product multi-period Inventory Routing Problem (IRP) where multiple capacitated vehicles distribute products from multiple suppliers to a single plant to meet the given demand of each product over a finite planning horizon. The demand associated with each product is assumed to be deterministic and time varying. In this supply chain, the products are assumed to be ready for collection at the supplier site when the vehicle arrives. A transshipment option is considered as a possible solution to increase the performance of the supply chain and shows the impact of this solution on the environment. A green logistic issue is also incorporated into the model by considering the interrelationship between the transportation cost and the greenhouse gas emission level. The proposed model is a mixed-integer linear program and solved by CPLEX. We provide a numerical study showing the applicability of the model and underlining the impact of the transshipment option on improved supply chain performance. © 2013 Elsevier B.V. All rights reserved.

Gong Y.,EMLYON Business School | Yucesan E.,Technology and Operations Management Area
International Journal of Production Economics | Year: 2012

Transshipments, monitored movements of material at the same echelon of a supply chain, represent an effective pooling mechanism. Earlier papers dealing with transshipments either do not incorporate replenishment lead times into their analysis, or only provide a heuristic algorithm where optimality cannot be guaranteed beyond settings with two locations. This paper uses infinitesimal perturbation analysis by combining with a stochastic approximation method to examine the multi-location transshipment problem with positive replenishment lead times. It demonstrates the computation of optimal base stock quantities through sample path optimization. From a methodological perspective, this paper deploys a duality-based gradient computation method to improve computational efficiency. From an application perspective, it solves transshipment problems with non-negligible replenishment lead times. A numerical study illustrates the performance of the proposed approach. © 2010 Elsevier B.V. All rights reserved.

Rekik Y.,EMLYON Business School
International Journal of Manufacturing Technology and Management | Year: 2010

The paper provides a set of main business case scenarios for deploying a basic RFID infrastructure as our methodology is not specific to particular organisations and as a consequence provides direct benefit to the wider community. To achieve the aim of this study, we assess the overall business case for the deployment of RFID technology across the whole end-to-end supply chain and we develop a phased roll-out approach towards the seamless deployment of RFID in all business areas. The motivation behind such overview approach is the fact that such approach provides a practical method to calculate the business case. In fact, through a combination of three RFID benefit levels and four RFID integration levels, we propose the main scenarios associated with the RFID deployment. In addition, based on current market surveys, we propose main costs associated with such deployment. Copyright © 2010 Inderscience Enterprises Ltd.

Rebeyrol V.,EMLYON Business School
European Energy and Environmental Law Review | Year: 2013

Twelve years after the facts, the French Court of Cassation (France's highest Court) issued a decision ruling on the consequences of the sinking of the oil tanker Erika, which put an end to the legal proceedings. With respect to the interests of the civil parties, the French Supreme Court applied the "International Convention on Civil Liability for Oil Pollution Damage" (CLC) of November 27, 1992. However, the solutions adopted by the Court of Cassation based on this Convention, more specifically the decision to hold the Total oil company liable and the manner in which environmental harm was recognized and remedied, are surprising from a strictly legal point of view. Such solutions demonstrate the need to reform the CLC whose current provisions do not meet the legitimate expectations of populations exposed to the risk of oil spills.

Versaevel B.,EMLYON Business School
Dynamic Games and Applications | Year: 2015

In a continuous-time model with uncertain market development, two potential entrants detect a nascent demand only if it reaches a firm-specific threshold. Entry occurs by investing irreversibly before competing in quantities. When leadership in the investment stage implies a first-mover advantage in the market stage, we examine how the firms’ relative “alertness” drives the equilibrium outcomes. If the firms detect the new demand relatively late, the entry strategies and resulting firm values differ qualitatively from those in standard real option games: (1) In case of symmetric detection, the probability of simultaneous entry is nonzero, and can be one, although demand is still nascent. When sequential entry occurs, there is no rent equalization, with the post-entry market advantage, resulting in higher equilibrium expected value to the leader; (2) in case of asymmetric detection, entry is always sequential, and the more alert firm maximizes value by delaying its investment to enter exactly when its short-sighted rival detects demand. The marginal effect of the market advantage on the leader’s equilibrium value increases in the inter-firm alertness differential; and (3) more demand volatility reduces the value differential across firms and makes less likely the impact of imperfect alertness on entry decisions. © 2015, Springer Science+Business Media New York.

Rekik Y.,EMLYON Business School
International Journal of Production Economics | Year: 2011

The inventory level shown in the Information System contrary to popular belief and assumptions in most academic papers and in spite of the considerable amounts invested in information technology, is often inaccurate. The inventory inaccuracy occurs when the inventory shown in the Information System is not in agreement with the actually available inventory. In this paper, we first describe the major factors generating inventory inaccuracy. Then, we provide situations permitting to manage an inventory system subject to errors. We provide a general framework permitting to model the inventory inaccuracy issue. In particular, we link the inaccuracy issue with the well known random yield problem. The shown link permits us to derive the optimal ordering policy of an inventory framework where demand satisfaction is done based on the inventory records (which are subject to inaccuracies). We also propose an analysis permitting to show the added value of an advanced identification system such as the RFID technology. © 2010 Elsevier B.V. All rights reserved.

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