In this note we consider the question under which conditions all entries of the matrix I-(I+X)-1 are nonnegative in case matrix X is a real positive definite matrix.Sufficient conditions are presented as well as some necessary conditions.One sufficient condition is that matrix X-1 is an inverse...

Abstract This article presents a novel combination of robust optimization developed in mathematical programming, and robust parameter design developed in statistical quality control. Robust parameter design uses metamodels estimated from experiments with both controllable and environmental...

This paper introduces methods to coordinate black box simulations in the construction of metamodels for situations in which we have to deal with coupled black boxes.We de.ne three coordination methods: parallel simulation, sequential simulation and sequential modeling.To compare these three...

This paper considers analogues of statements concerning compactness and finite coverings, in which the roles of spheres are replaced by cones. Furthermore, one of the finite covering results provides an application in Multi-Objective Programming; infinite sets of alternatives are reduced to...

Abstract: Robust optimization (RO) is a young and active research field that has been mainly developed in the last 15 years. RO techniques are very useful for practice and not difficult to understand for practitioners. It is therefore remarkable that real-life applications of RO are still...

Abstract: Adjustable robust optimization (ARO) is a technique to solve dynamic (multistage) optimization problems. In ARO, the decision in each stage is a function of the information accumulated from the previous periods on the values of the uncertain parameters. This information, however, is...

We analyze the payout channel choice of listed UK firms and examine whether the choice between dividends, share repurchases, a combination of payout channels, or complete earnings retention is affected by investor sentiment, taxation, major shareholder ownership, and in particular the CEO’s...

We investigate the fundamental determinants and value implications of corporate social responsibility (CSR) around the world. We contrast three broad views on CSR: (1) it is a response to government failure; (2) it reflects individual and societal preferences; (3) it is an equilibrium result of a...

We examine the firm-level and country-level determinants of the currency denomination of small business loans. We introduce an information asymmetry between banks and firms in a model that also features the trade-off between the cost of debt and firm-level distress costs. Banks in our model...