• Multi-mode schedule optimisation for incentivised projects

      Kerkhove, Louis-Philippe; Vanhoucke, Mario (Computers and Industrial Engineering, 2020)
      This research presents a novel quantitative methodology to optimise the scheduling of subcontracted projects from the perspective of the contractor. Specifically, the scenario where the contractor’s remuneration is performance dependent is investigated. Based on the incentive methodology introduced by Kerkhove and Vanhoucke (2016), a novel mixed integer programming formulation as well as a greedy local search heuristic to solve the contractor’s problem are presented and tested in a computational experiment. For this experiment, a database containing 3,150 contract-project combinations with diverse structures has been created. The results from this experiment demonstrate the efficiency of the MIP formulation even for larger problem instances, as well as the influence of the project and contract structure on the contractor’s earnings.
    • Multi-National or Multi-Regional: a new look at MNC and Globalization

      De Koning, A.; Subramanian, Venkat; Verdin, Paul (2000)
    • Multicountry Multifactor Tests of the Factor Abundance Theory

      Bowen, Harry; Learner, E.; Sveikauskas, Leo (American Economic Review, 1987)
      Conceptually correct tests are performed of the Heckscher-Ohlin proposition that trade in commodities can be explained in terms of an interaction between factor input requirements and factor endowments. An exact specification of this interaction in a multicountry, multicommodity, multifactor world is derived in the form of the Heckscher-Ohlin-Vanek (H-O-V) theorem. The relationships are tested using data on the 367-order US input-output tables for 1967 and the 1967 trade and the 1966 supply of 12 resources for 27 countries. The Leontief-type sign and rank propositions, whether tested across countries or across factors, generally are not supported. The hypothesis that the H-O-V equations are exact also is not supported by the data. The data indicate errors in measurement in both trade and national factor supplies and favor the hypothesis of neutral technological differences across countries. The H-O-V equations are rejected in favor of weaker models that permit technological differences and measurement errors.
    • Multimode time-cost-robustness trade-off project scheduling problem under uncertainty

      Li, Xue; He, Zhengwen; Wang, Nengmin; Vanhoucke, Mario (Journal of Combinatorial Optimization, 2020)
      The time/cost trade-off problem is a well-known project scheduling problem that has been extensively studied. In recent years, many researchers have begun to focus on project scheduling problems under uncertainty to cope with uncertain factors, such as resource idleness, high inventory, and missing deadlines. To reduce the disturbance from uncertain factors, the aim of robust scheduling is to generate schedules with time buffers or resource buffers, which are capped by project makespan and project cost. This paper addresses a time-cost-robustness trade-off project scheduling problem with multiple activity execution modes under uncertainty. A multiobjective optimization model with three objectives (makespan minimization, cost minimization, and robustness maximization) is constructed and three propositions are proposed. An epsilon-constraint method-based genetic algorithm along with three improvement measures is designed to solve this NP-hard problem and to develop Pareto schedule sets, and a large-scale computational experiment on a randomly generated dataset is performed to validate the effectiveness of the proposed algorithm and the improvement measures. The final sensitivity analysis of three key parameters shows their distinctive influences on the three objectives, according to which several suggestions are given to project managers on the effective measures to improve the three objectives.
    • Multivariate Hill Estimators

      Dominicy, Yves; Ilmonen, Pauliina; Veredas, David (International Statistical Review, 2017)
      We propose two classes of semi-parametric estimators for the tail index of a regular varying elliptical random vector. The first one is based on the distance between a tail probability contour and the observations outside this contour. We denote it as the class of separating estimators. The second one is based on the norm of an arbitrary order. We denote it as the class of angular estimators. We show the asymptotic properties and the finite sample performances of both classes. We also illustrate the separating estimators with an empirical application to 21 worldwide financial market indexes.
    • N.V. Röthlisberger. A, B, C, D en E, Gevallenstudie

      Ooghe, Hubert; De Bourdeaudhuij, C. (1995)
    • N.V. Sucrefin, Gevallenstudie

      Ooghe, Hubert; Donck, Frank (1990)
    • Naar een digitale transformatie van overheidsinstellingen: de case van VDAB

      Leroy, F.; Viaene, Stijn; Danneels, Lieselot (Vlaams Tijdschrift voor Overheidsmanagement, 2016)
    • Naar een nieuw balans tussen economie en ecologie: onderzoek over de economische impact van de luchthaven Brussel voor de Belgische economie

      Sleuwaegen, Leo; De Backer, Koen; Van Pottelsberghe, Bruno; Nysten, S.; Gille, J.; Molemaker, R.J. (2003)
    • Nabeschouwingen

      Debackere, Koenraad; Oosterlinck, André (2002)
    • National Accounts for the Low Countries: The Netherlands and Belgium, 1800-1990

      Buyst, Erik; Smits, J.; Van Zanden, J. (Scandinavian Economic History, 1995)
    • National institutions and the allocation of entrepreneurial effort

      Bowen, Harry; De Clercq, Dirk (2005)
      This paper examines how the allocation of entrepreneurial effort within a country is influenced by the country's institutional environment. We hypothesize that the likelihood that entrepreneurs launch a growth-oriented start-up is associated with the institutional environment in which entrepreneurs are embedded. We test our hypothesis using data on 44 countries over the three-year period from 2002 to 2004. The data are drawn from two sources: the Global Entrepreneurship Monitor and the World Economic Forum's Executive Opinion Survey. Our findings indicate that the likelihood of a growth-oriented start-up is positively related to a country's level of human capital targeted at entrepreneurship and the level of regulatory protection, but is negatively related to the extent of corruption and mistrust in public officials. JEL categories: D21, M13, O49 Keywords: institutions, entrepreneurship, resource, allocation
    • Navigating institutional complexity: The production of risk culture in the financial sector

      Palermo, Tommaso; Power, Michael; Ashby, Simon (Journal of Management Studies, 2017)
      Earlier versions of this paper were presented at the EGOS 2014 Colloquium, at research seminars at Copenhagen Business School and HEC Lausanne, and, under the title ‘Searching for Risk Culture’, as a keynote address at the SAMS/JMS annual conference on Managing Complexity Within and Across Organizational Boundaries at Cambridge University, March 2014. The authors are grateful for the helpful comments of Mats Alvesson, Roger Friedland, Matthew Hall, Silvia Jordan, Steve Maguire and Iain Munro, as well as the editors of the special issue of JMS on Managing Complexity. The authors gratefully acknowledge the financial support of the Economic and Social Research Council (ESRC), the Chartered Insurance Institute (CII), the Chartered Institute of Management Accountants (CIMA) and the Lighthill Risk Network.