During alloy and process design, it is often desired to identify regions of design or process variables for which certain calculated functions have optimal v...

The present paper describes the coupling of the Mesh Adaptive Direct Search (MADS) algorithm with the FactSage thermochemical software, which allows to calcu...

We study extremal graphs for the extremal values of the second largest <i>Q</i>-eigenvalue of a connected graph. We first characterize all simple connected g...

Le problème d'affectation d'activités et de tâches consiste à affecter des activités interruptibles et des tâches non interruptibles à des quarts de travai...

This study proposes a game theoretic approach toward the analysis of renewable portfolio standard policy (RPS), which is one of the main forces behind prom...

The production-routing problem can be seen as a combination of two well known combinatorial optimization problems: the lotsizing and the vehicle routing prob...

La plupart des compagnies distribuant de l’huile de chauffage résolvent des problèmes de tournées de véhicules presque quotidiennement. Ces problèmes peuven...

The <i>positive edge</i> is a new pricing rule for the primal simplex: it identifies, with a probability error less than or equal to 2^-30 in sing...

In the rail industry, profit maximization relies heavily on the integration of logistics activities with an improved management of revenues. The operational ...

In this paper, we empirically compare open-loop and closed-loop investment strategies in production capacities in the three-player Finnish electricity indust...

It is seldom the case that one has the opportunity to compare investments as projected by a long-term multi-period model to what is eventually realized in pr...

We revisit the question of why some participants in online auctions place their bids right before the time of closing. Using e-Bay data for two product cate...

This paper deals with an application of dynamic games for the design of efficient climate policies involving both adaptation and mitigation elements. More pr...

Paleoclimate evidence and climate models indicate that certain elements of the climate system may exhibit thresholds, with small changes in greenhouse gas em...

Normalized cut is one of the most popular graph clustering criteria. The main approaches proposed for its resolution are spectral clustering methods (e.g. [1...

The paper proposes a framework for sensitivity analyses of blackbox constrained optimization problems for which Lagrange multipliers are not available. Two s...

In this paper, we generalize the Asymmetric Representatives Formulation, which was first introduced by Campêlo et al. (2008) for the Node Coloring Problem. ...

We propose a new approach to construct adaptive multiscale orthonormal (AMO) bases of R^<i>N</i> that provide highly sparse signal representations....

A mixed interior/exterior-point method for nonlinear programming is described, that handles constraints by way of an <i>l</i>₁-penalty function. A...

The paper answers the three distinct questions of maximizing the perimeter, diameter and area of equilateral unit-width convex polygons. The solution to each...