HEC Montréal

About: HEC Montréal is a education organization based out in Montreal, Quebec, Canada. It is known for research contribution in the topics: Vehicle routing problem & Corporate governance. The organization has 1221 authors who have published 5708 publications receiving 196862 citations. The organization is also known as: Ecole des Hautes Etudes Commerciales de Montreal & HEC Montreal.

The existence and independence of audit committees in France

Abstract: This paper uses an agency theory framework to investigate the determinants of audit committees in France. Empirical tests address a cross-sectional sample of 285 listed companies for the fiscal year 1997, which is two years after the first Vienot report recommending the creation of audit committees among listed companies. Multivariate analyses show that the existence of an audit committee, and the committee's independence, are both negatively correlated with insider ownership, consistent with the owner-manager agency theory that considers audit committees as devices aimed at strengthening the monitoring system, the quality of financial reporting and the whole corporate governance environment. The existence of an audit committee that complies with corporate governance recommendations (i.e., a minimum of three directors, all of whom are non-executive directors) also positively depends on leverage if the firm has a high-IOS (Investment Opportunity Set). The quality of accounting numbers thus seems i...

Branch-price-and-cut algorithms

Abstract: In many mixed integer programs there is some embedded problem structure which can be exploited, often by a decomposition. When the relaxation in each node of a branch-andbound tree is solved by column generation, one speaks of branch-and-price. Optionally, cutting planes can be added in order to strengthen the relaxation, and this is called branchprice-and-cut. We introduce the common concepts of convexification and discretization to arrive at a Dantzig-Wolfe type reformulation of a mixed integer program. The relation between the original and the extended formulations helps us understand how cutting planes should be formulated and how branching decisions can be taken while keeping the column generation subproblems manageable.