À la recherche d'un juste équilibre entre libertés fondamentales et droits fondamentaux dans le marché intérieur - Quelques réflexions à propos des arrêts Schmidberger et Omega


Revue du Droit de l'Union Européenne

2004, n°4

Départements : Droit et fiscalité, GREGHEC (CNRS)

A Model of Free Riding Incentives in Franchise Chains


Seoul Journal of Business

juin 2004, vol. 10, n°1, pp.81-104

Départements : Marketing

This paper explains the free riding phenomenon in franchise chains where all chain members benefit mutually from the positive network externality of service quality. Starting from a simple formal model with two independent outlets, we present the analytical form of the optimal reaction function in which two outlets interact through service quality externalities. With complete information, no outlet finds any interest in free riding on service quality at the expense of the other. Contrary to previous findings, the positive demand externality increases the optimal service quality through interactions among chain members with complete information. By relaxing the complete information assumption, we demonstrate that incompleteness of information is the main source of free riding incentives. Contrary to the prevailing explanation based on agency theory, incompleteness of information leads outlets facing a smaller externality to free ride more on service quality compared to its optimal level with complete information.

A Perpetual Race to Stay Ahead


Review of Economic Studies

octobre 2004, vol. 71, n°249, pp.1065-1089

Départements : Finance

This paper presents a model of dynamic competition between two firms that repeatedly engage in an innovative activity. The state of competition--measured by the difference between the number of innovations introduced by the firms--evolves stochastically according to their effort level. The structure of Markov perfect equilibria is identified. It is generally not true that competition is fiercest when firms are closest. Rather, firms invest under two distinct circumstances: while sufficiently ahead, to outstrip their rival and secure a durable leadership; while behind, to regain leadership and prevent the situation from worsening to the point where their rival outstrips them.

A Practical Implementation of Stochastic Programming: an Application to the Evaluation of Option Contracts in Supply Chains



mai 2004, vol. 40, n°5, pp.743-756

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

Stochastic programming is a powerful analytical method in order to solve sequential decision-making problems under uncertainty. We describe an approach to build such stochastic linear programming models. We show that algebraic modeling languages make it possible for non-specialist users to formulate complex problems and have solved them by powerful commercial solvers. We illustrate our point in the case of option contracts in supply chain management and propose a numerical analysis of performance. We propose easy-to-implement discretization procedures of the stochastic process in order to limit the size of the event tree in a multi-period environment.

A Study on Impeding Factors of Venture Firms in Daedeok Valley


Journal of Korea Technology Innovation Society

2004, vol. 7(2), pp.305-324

Départements : Stratégie et Politique d’Entreprise

Accounts Manipulation: A Literature Review and Proposed Conceptual Framework

G. Breton, H. STOLOWY

Review of Accounting and Finance

2004, vol. 3, n°1, pp.5-66

Départements : Comptabilité et Contrôle de Gestion, GREGHEC (CNRS)

Accounts manipulation has been the subject of research, discussion and even controversy in several countries including the USA, Canada, the U.K., Australia, Finland and France. The objective of this paper is to provide a comprehensive review of the literature and propose a conceptual framework for accounts manipulation. This framework is based on the possibility of wealth transfer between the different stake- holders, and in practice, the target of the manipulation appears generally to be the earnings per share and the debt/equity ratio. The paper also describes the different actors involved and their potential gains and losses. We review the literature on the various techniques of accounts manipulation: earnings management, income smoothing, big bath accounting, creative accounting, and window-dressing. The various definitions of ail these, the main motivations behind their application and the research methodologies used are ail examined. This study reveals that ail the above techniques have common elements, but there are also important differences between them.

Alla ricerca delle determinanti dei livelli di prezzo online

F. SOTGIU, F. Ancarani

Micro & Macro Marketing

août 2004, n°2, pp.359-374

Départements : Marketing

Analyzing Variability in Continuous Processes

K. Rajaram, A. ROBOTIS

European Journal of Operational Research

juillet 2004, vol. 156, n°2, pp.312-325

Départements : Information Systems and Operations Management

Author Keywords: continuous processes; production; variability; process design; operational improvement Abstract: We analyze the impact of variability on a continuous flow production process. To perform this analysis, we consider an n-stage, serial continuous process in which variability is introduced at each stage. We develop a continuous time model to capture the propagation of variability through the system and use this model to calculate the mean and the variance of the distribution of the output from this process. These results are then used to determine the optimal decisions for variability reduction when designing and operating these processes

Approche anthropologique des mutations et de la distinction public/privé


Politiques et Management Public

septembre 2004, vol. 22, n°3, pp.1-42

Départements : Marketing

Approximating a Sequence of Observations by a Simple Process


Annals of Statistics

2004, vol. 32, n°6, pp.2742-2775

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)

Given an arbitrary long but finite sequence of observations from a finite set, we construct a simple process that approximates the sequence, in the sense that with high probability the empirical frequency, as well as the empirical one-step transitions along a realization from the approximating process, are close to that of the given sequence.We generalize the result to the case where the one-step transitions are required to be in given polyhedra