Articles

Approximate Solutions for Large-Scale Piecewise Deterministic Control Systems Arising in Manufacturing Flow Control Models

C. VAN DELFT

IEEE Transactions on Robotics and Automation

avril 1994, vol. 10, n°2

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


Boundedly Optimal Control of Piecewise Deterministic Systems

A. Haurie, A. Leizarowitz, C. VAN DELFT

European Journal of Operational Research

1994, vol. 73, pp.237-251

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


Comment mesurer la performance des achats ?

V. MALLERET, O. BRUEL, O. Chatin, H. Verdler, F. Beloeuvre

L'Expansion Management Review

hiver 1994, n°75, pp.94-102

Départements : Comptabilité et Contrôle de Gestion, Informations Systems and Operations Management


Convergence of Stochastic Approximation Coupled with Perturbation Analysis in a Class of Manufacturing Flow Control Models

C. VAN DELFT, A. Haurie, P. L'Ecuyer

Discrete Event Dynamic Systems: Theory and Applications

1994, n°4, pp.87-111

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


La conception à coût objectif : quelles implications pour les comptables ?

O. BRUEL

Revue Française de Comptabilité

février 1994, n°253, pp.50-58

Départements : Informations Systems and Operations Management


Les tableaux de bord gestion, outils d'introduction du changement

M.-H. DELMOND, E. CHIAPELLO

Revue Française de Gestion

janvier-février 1994, n°97, pp.49-58

Départements : Informations Systems and Operations Management, Comptabilité et Contrôle de Gestion


The Influence of Decision Aids on Choice Strategies Under Conditions of High Cognitive Load

P. A. TODD, I. BENBASAT

IEEE Transactions on Systems, Man, and Cybernetics - A

avril 1994, vol. 24, n°4, pp.537-547

Départements : Informations Systems and Operations Management


Concerns the role of effort and accuracy in choice tasks. The paper examines the role of computer-based decision aids in reducing cognitive effort where the decision maker experiences heavy information load. It is argued that specific features can be incorporated within a set of aids that alter the effort required to implement a particular strategy relative to other strategies, and that this influences strategy selection. Subjects were given aids to reduce cognitive effort associated with preferential choice strategies. In particular, the aids provided varying levels of support for the processing associated with either elimination by aspects (EBA) or additive difference (AD) strategies. The study examined changes in operators which represent the subcomponents or building blocks of the strategies. A repeated measures design was utilized whereby 32 subjects performed a 30 alternative apartment selection task over two trials. Analysis of the data was based on the coding of concurrent verbal protocols which described the subjects' problem solving strategies. The results show that aids which reduce the effort associated with the EBA strategy induce behaviors associated with EBA. More importantly, there was an interaction effect caused by the behavior of subjects provided with support for an AD but not for an elimination by aspects strategy. These subjects employed more operations which are unique to the AD strategy. These results are consistent with earlier studies in indicating that decision makers adapt to the aids available to them so as to maintain low overall levels of effort expenditure. They further indicate that aids can be designed to overcome constraining task limitations

The Influence of Decision Aids on Choice Strategies: An Experimental Analysis of the Role of Cognitive Effort

P. A. TODD, I. BENBASAT

Organizational Behavior and Human Decision Processes

octobre 1994, vol. 60, n°1, pp.36-74

Départements : Informations Systems and Operations Management


This paper examines the role of computer-based decision aids in reducing cognitive effort and therefore influencing strategy selection. It extends and complements the works reported in the behavioral decision theory literature on the role of effort and accuracy in choice tasks. The central proposition of this paper is that specific features can be incorporated within a set of decision aids that will alter the effort required to implement a particular choice strategy relative to other strategies, and that this will influence strategy selection by the decision maker. In a laboratory experiment, using a repeated measures design, 48 subjects performed a preferential choice task using different decision aids. Subjects were given different levels of support to reduce the cognitive effort associated with different preferential choice strategies. In particular, the decision aids provided varying levels of support for the processing associated with either elimination by aspects or additive difference strategies. The study examined how information processing strategies were influenced by the decision aids. The results show that decision aids which reduce the effort associated with the elimination by aspects strategy induce behaviors associated with elimination by aspects. More importantly, there was an interaction effect caused by the distinct behavior of the group which was provided support for additive difference but not for elimination by aspects. This group processed the information about available choices in a way that is consistent with an additive difference strategy. These findings indicate that a decision aid can induce additive processing by altering the relative effort requirements of different choice strategies


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