We consider linear programming relaxations for the max cut problem in graphs, based on <i>k</i>-gonal inequalities. We show that the integrality ratio for ra...

We propose a test to detect multivariate ARCH effects in the residuals from a multivariate regression model. The absence of ARCH effects implies that the s...

Finding augmenting chains is in the heart of the maximum matching problem, which is equivalent to the maximum stable set problem in the class of line graphs...

We consider a new variant of constrained shortest path problem, where the constraints come from a set of forbidden paths (arc sequences) that cannot be part...

The <i>Dial-a-Ride Problem</i> (DARP) consists of designing vehicle routes and schedules for <i>n</i> users who specify pick-up and drop-off requests betwee...

In the undirected <i>Hierarchical Chinese Postman Problem</i> (HCPP), the edges of a graph are partitioned into clusters and must be serviced while respecti...

The <i>Job Sequencing and Tool Switching Problem</i> (SSP) involves optimally sequencing jobs and assigning tools to a capacitated magazine in order to mini...

In this paper, nonparametric tests are presented for the hypothesis of no direct treatment effects, as well as for the hypothesis of no carryover effects, f...

This paper describes BIPA, a software for solving nonlinear bilevel programming problems. At each iteration, the underlying algorithm computes a linear-quad...

We consider the approximation of nonlinear bilevel mathematical programs by solvable programs of the same type, <i>i.e.</i>, bilevel programs involving line...

Recently, Araujo and De la Pena (1998) gave bounds for the connectivity index of chemical trees as a function of this index for general trees and the ramifi...

The pooling problem, which is fundamental to the petroleum industry, describes a situation where products possessing different attribute qualities are mixed...

This paper deals with the class of uncertain continuous-time linear systems with Markovian jumps, time-delay, and saturating actuators. Under norm-bounded u...

We prove that amongst all fullerenes the dodecahedron has maximum smallest eigenvalue (equal to -<img src="G0234-1.gif" align=middle>), followed by the thre...

We investigate the effects of retailer's myopic behavior on channel members strategies and on sales in a single-manufacturer single-retailer distribution ne...

We ask whether young agents prefer to work in different-age or same-age production pairs in an overlapping-generations model where wages are reputation-base...

A common question asked by users of direct search algorithms is how to use derivative information at iterates where it is available. This paper addresses th...

This paper deals with the class of uncertain systems with multiple time-delays. The stability and stabibizability of this class of systems are considered. T...

This paper deals with the class of continuous-time linear systems with Markovian jumps and multiple time-delays. The systems we are treating are assumed to ...

The paper identifies optimal dynamic marketing strategies in a channel of distribution. A number of (identical) retailers promote locally a manufacturer's b...