from Active and Passive Colour Stereo Vision Alois Knoll, Ralf Schr oder, and Andr e Wolfram University of Bielefeld, Faculty of Technology, Department of Computer Science, Postfach 10 01 31, D-33501 Bielefeld, Germany Abstract The problem of correspondence search in a stereo system may be alleviated if an active light source projects colour codes onto the scene. To reduce the amount of ambigu...

In fuzzy decision-making problems, existing methods only indicate assessment values but lack the degrees/levels of credibility regarding in alternatives over attributes due to vagueness and uncertainty human cognitions/judgments for complicated problems. Therefore, degree value shows its importance necessity problem. To enhance values, should be closely related their measures, which make inform...

Introduction One of the basic problems of applied finance is the optimal selection of stocks by conflicting objective of maximizing future return and minimizing investment risk. The first systematic treatment of this dilemma is the mean variance approach proposed by Markowitz. Markowitz combined the optimization and probability theory to solve the dilemma. In Markowitz’s mean variance model, th...

In this paper, we have proposed an improved genetic algorithm (GA) to solve constrained knapsack problem in fuzzy environment. Some of the objects among all the objects are associated with a discount. If at least a predetermined quantity of the object(s) (those are associated with a discount) is selected, then an amount (in $) is considered as discount. The aim of the model is to maximize the t...

Facility location problem is one of the most critical elements in the design of distribution systems, and numerous studies have focused on this issue. However, facility location theory and guidelines for B2C firms are sparse. In this paper, with regard to the customer characteristics peculiar to B2C e-commerce and the turbulence of the competitive market, a new fuzzy location model is proposed ...

Avoiding the possibility of bankruptcy during the investment horizon is very important to multi-period portfolio management. This paper considers a multi-period fuzzy portfolio selection problem with bankruptcy control. A multi-period portfolio optimization model imposed by a bankruptcy control constraint in fuzzy environment is proposed on the basis of credibility theory. In the proposed model...

Une crédibilité minimale de la banque centrale, avec une probabilité non nulle ne pas revenir sur son engagement, est condition nécessaire pour ancrer les anticipations d’inflation et garantir le retour l’inflation vers sa cible long terme. En revanche, l’absence complète crédibilité, certitude que centrale reviendra engagement (« discrétion optimale »), implique bifurcation dynamique des traje...