Detailed schedule

Thursday 7 February:

• Testing Rationality of Collective Household Consumption (PDF)
  Fabrice Talla Nobibon (KU Leuven)
  Co-authors: L. Cherchye, Y. Crama, T. Demuynck, B. De Rock, and F.C.R. Spieksma
  
• On the statistical analysis of overlapping observations in large networks (PDF)
  Yuyi Wang (KULeuven)
  Co-authors: Jan Ramon
  
• Dantzig-Wolfe Reformulation for the Network Pricing Problem with Connected Toll Arcs (PDF)
  Alessia Violin (Université Libre de Bruxelles)
  Co-authors: Bernard Fortz, Martine Labbé
  

• Dynamic Product Portfolio Management with Life Cycle Considerations (PDF)
  Jean-sébastien Tancrez (Louvain School of Management, Université catholique de Louvain)
  Co-authors: A.C. Zeballos, R.W. Seifert
  
• Energy-Neutral Demand Response from a Large Population of batch-process loads (PDF)
  Arnaud Latiers (UCL Louvain-la-Neuve)
  Co-authors: Francois Glineur, Emmanuel De Jaeger
  Abstract:
  Large Electricity grids are nowadays at a milestone of their development. In Europe, the organisation of electricity supply is being profoundly re-organised. Since electricity liberalisation, a constant effort towards integration of electricity markets has been undertaken, and is not yet in place. At the same time, the European Union has committed to develop renewable energies, particularly in the power sector. Power production is more and more decentralised, more volatile, and more uncertain. In this context, new challenges appear for electricity grid operators. They need to provide greater efforts to perform their most critical daily duty : balancing at every second the power production with the power demand. Therefore,transmission system operators (TSO’s) are searching for new sources of flexibility. This flexibility would be used in daily operations, and serve as frequency restoration reserve (FRR - secondary control) or frequency containment reserve (FCR - primary control), more generally as ancillary services. One possible answer may be found in flexible electricity demand, or Demand Response. Demand Response represents all ways that may influence and change electricity consumption in response to external signals, such as high electricity prices, or for electricity system security. Historically, Demand Response was developed for emergency purpose or for peak demand reduction. Participating loads were controlled very infrequently, in case of large contingencies, or during high demand periods. However, there are nowadays examples of Demand Response initiatives that are able to provide constant balancing services to the TSO. Mainly, heat/ventilation/airconditioning (HVAC) applications or other thermostatically controlled loads are managed in different ways in order to change consumption and provide flexibility. There exist other kinds of possible sources of flexibility. We study the dynamic and control of the instantaneous power consumption of a large group of batch-process loads (pumps, conveyor belts, etc.). The purpose of the control is to provide constant balancing services to the electricity grid operator without compromising the initial needs of the process the load is part of. Essentially, this means that the control will have to be energy neutral, on a certain time period (e.g. 1 hour quarter). In our context, the power consumption of each participating load may be increased/decreased proportionally to a single, common to all loads, control parameter (i.e. the common modulation factor ). This parameter may evolve over a limited range (i.e 10%) around the nominal power of the load. In other words, each load will be allowed to change its instantaneous consumption, but not to shut down completely or being postponed in time. We firstly show, in a simple example, what are the important parameters that govern the total consumption of the group, and also its dynamic response to the modulation factor. In a second step, we develop an optimisation model, that will choose the modulation factor such as to minimize the total cost of balancing the grid. For this purpose, a very simplified model of the Western-European interconnected Electricity system is used, were the Belgian system is a little more accurately described, especially in terms of ancillary services. A State-Queuing model of the total consumption of the group of load is developed. This leads to a non-linear optimisation model that performs system balancing at the lowest possible cost. The results of the study are threefold. 1. The benefits for the system to implement centralised, energy neutral control are assessed, for a single day of the year. 2. The dynamic of the consumption of the load population is described, and lead to interesting controllability limits. 3. Implementing this control would require the development of additional market mechanisms. They are also described at the end of the study. The next steps of this study will consist in generalising the approach to a more diversified group of loads, to integrate more realistic figures (based on real-life survey) and to assess the benefits on a yearly basis. - This research is sponsored by the Brussels Region -
  
• Measuring Complexity in Mixed-Model Assembly Workstations (PDF)
  Luiza Zeltzer (Department of Industrial Management Faculty of Engineering and Architecture Ghent University Ghent, Belgium)
  Co-authors: Luiza Zeltzer, Veronique Limère, El-Houssaine Aghezzaf, Hendrik Van Landeghem
  

• On jet-convex functions and their tensor products (PDF)
  Vladimir Shikhman (Université Catholique de Louvain)
  Co-authors: O. Stein
  
• Hybrid approach for generating laser cutting tool paths (PDF)
  Reginald Dewil (Katholieke Universiteit Leuven)
  Co-authors: Pieter Vansteenwegen, Dirk Cattrysse
  
• Optimal group sizes for dynamic group screening (PDF)
  Dieter Claeys (Ghent University)
  Co-authors: Joris Walraevens, Bart Steyaert, Herwig Bruneel
  

• Intermodal network design for freight transportation in Belgium - location of rail/road and road/inland waterway terminals (PDF)
  Martine Mostert (University of Liege)
  Co-authors: Sabine LIMBOURG
  
• Using Contraction Hierarchies to Find Dissimilar Paths in Transportation Networks (PDF)
  Sofie Demeyer (Ghent University)
  Co-authors: Maarten Houbraken, Thijs Walcarius, Pieter Audenaert, Didier Colle, Mario Pickavet
  
• Analysis of different cost allocation methods in a collaborative transport setting (PDF)
  Christine Vanovermeire (University of Antwerp)
  Co-authors: Dries Vercruysse, Kenneth Sörensen
  

• Planning the caregivers at Landelijke Thuiszorg (PDF)
  Marco Castro (University of Antwerp)
  Co-authors: Pablo Maya, Kenneth Sorensen, Peter Goos
  
• Automatic Constraint Weight Extraction for Nurse Rostering: A Case Study (PDF)
  Mihail Mihaylov (CODeS, KAHO Sint-Lieven)
  Co-authors: Pieter Smet, Greet Vanden Berghe
  
• The overlapping case in an integrated staffing and rostering formulation (PDF)
  Komar Komarudin (Vrije Universiteit Brussel)
  Co-authors: M.-A. Guerry, G. Vanden Berghe and T. De Feyter
  
• Hardness analysis and a new approach for the shift minimisation personnel task scheduling problem (PDF)
  Pieter Smet (CODeS, KAHO Sint-Lieven)
  Co-authors: Tony Wauters, Greet Vanden Berghe
  

• Elementary shortest path problems for a multiple-trip vehicle routing problem (PDF)
  Hande KÜÇÜkaydin (University of Liège)
  Co-authors: Yasemin Arda, Yves Crama
  
• State of the art of vehicle routing problems with loading constraints (PDF)
  Hanne Pollaris (Hasselt University)
  Co-authors: Kris Braekers, An Caris, Katrien Ramaekers, Gerrit K. Janssens
  
• The eect of customer characteristics on coalition gains in collaborative vehicle routing (PDF)
  Christof Defryn (University of Antwerp)
  Co-authors: C.Vanovermeire, K.Sörensen
  
• A time-dependent vehicle routing problem in the service area of intermodal terminals (PDF)
  Kris Braekers (Universiteit Hasselt)
  Co-authors: An Caris, Gerrit K. Janssens
  

• Multi-Objective Large Neighborhood Search (PDF)
  Renaud Hartert (Université Catholique de Louvain)
  Co-authors: Pierre Schaus
  
• OscaR.cbls: an open source framework for constraint-based local search (PDF)
  Renaud De Landtsheer (CETIC)
  Co-authors: Christophe Ponsard
  
• The Budget-Constrained Min Cost Flow Problem (PDF)
  Sofie Coene (KULeuven)
  Co-authors: P. Maya, K. Sörensen, P. Goos, F.C.R. Spieksma
  
• A Memetic Algorithm for the Orienteering Problem with Intermediate Facilities (PDF)
  Ali Divsalar (KU Leuven)
  Co-authors: Pieter Vansteenwegen, Dirk Cattrysse
  

• Optimisation model for empty container repositioning. (PDF)
  Frederic Salmon (HEC-ULg QuantOM)
  Co-authors: S.Limbourg
  
• The Red-Blue Transportation Problem (PDF)
  Wim Vancroonenburg (KU Leuven - KAHO Sint-Lieven)
  Co-authors: Federico Della Croce, Dries Goossens, Frits Spieksma
  
• The ship placement problem: Decision support through exact decomposition (PDF)
  Jannes Verstichel (KU Leuven - KAHO Sint-Lieven)
  Co-authors: Patrick De Causmaecker, Greet Vanden Berghe
  
• The lockmaster's problem: a computational study (PDF)
  Ward Passchyn (KU Leuven)
  Co-authors: S. Coene; F. C. R. Spieksma; G. Vanden Berghe; D. Briskorn; J. L. Hurink
  

• An Adaptive Large Neighborhood Search for a Vehicle Routing Problem with Multiple Trips and Driver Shifts (PDF)
  Véronique François (HEC-Management School of the University of Liège)
  Co-authors: Yasemin Arda and Yves Crama
  
• New Metaheuristics for the Risk Constraint Cash-in-Transit Vehicle Routing Problem (PDF)
  Luca Talarico (University of Antwerp)
  Co-authors: K. Sörensen and J. Springael
  
• Routing for couriers: a multi-objective tabu search method to rebalance a tactical route plan with microzones (PDF)
  Jochen Janssens (University of Antwerp)
  Co-authors: Joos Van Den Bergh
  

• A Set-Based Approach to the Decomposition of Linear Mixtures Using Quasi-Convex Programming (PDF)
  Jan Verwaeren (Ghent University)
  Co-authors: Michael Rademaker, Bernard De Baets
  
• Dice representability of reciprocal relations (PDF)
  Karel De Loof (Universiteit Gent)
  Co-authors: K. De Loof, B. De Baets and H. De Meyer
  
• Using a natural monotonicity constraint as the basis of a ranking procedure (PDF)
  Michael Rademaker (UGent)
  Co-authors: Bernard De Baets
  

• Automatic Aircraft Cargo Load Planning with Pick-up and Deliveries (PDF)
  Virginie Lurkin (HEC- Université de Liège)
  Co-authors: Lurkin Virginie and Schyns Michael
  
• A tabu-embedded simulated annealing algorithm for a selective pickup and delivery problem (PDF)
  Tabitha Maes (Hasselt University)
  Co-authors: An Caris, Katrien Ramaekers, Gerrit K. Janssens
  
• An insertion-based heuristic for the constrained pickup and delivery problem (PDF)
  Maarten Houbraken (UGent)
  Co-authors: T. Walcarius, S. Demeyer, P. Audenaert, D. Colle, M. Pickavet
  

• The cooperative facility location problem (PDF)
  Lotte Verdonck (Hasselt University, Research Foundation Flanders (FWO))
  Co-authors: Patrick Beullens, An Caris, Katrien Ramaekers, Gerrit K. Janssens
  
• Two- and three-dimensional strip packing: a shaking procedure (PDF)
  Tony Wauters (CODeS, KAHO Sint-Lieven)
  Co-authors: Jannes Verstichel, Greet Vanden Berghe
  
• Multiperiod vehicle loading with stochastic release dates (PDF)
  Thierry Pironet (University of Liège)
  Co-authors: Y. Arda, Y. Crama, D. Kronus, Th. Pironet, P. Van Hentenryck
  

• Lexicographic optimization of a bi-objective permutation flow shop with time lags (PDF)
  Jacques Teghem (Faculté Polytechnique de Mons)
  Co-authors: E.Dhouib;D.Tuyttens;T.Loukil
  
• general lotsizing problem in a closed-loop supply chain with uncertain returns (PDF)
  Guillaume Amand (University of Liège)
  Co-authors: Yasemin Arda
  
• A branch and bound algorithm for a lexicographic optimization of a bi-objective permutation flowshop with time lags (PDF)
  Arnaud Vandaele (UMONS, Faculté Polytechnique)
  Co-authors: Daniel Tuyttens
  

• The characterization of affine maximizers when there are only two alternatives\,: A technical note (PDF)
  Thierry Marchant (Ghent University)
  Co-authors: Debasis Mishra
  
• Covering Linear Programs with Violations (PDF)
  Laurence Wolsey (CORE, UCL)
  Co-authors: Feng Qiu, Shabbir Ahmed, Santanu S. Dey
  
• Approximation Algorithms for Multi-Dimensional Vector Assignment problems (PDF)
  Trivikram Dokka (K U Leuven)
  Co-authors: Yves Crama, Frits Spieksma
  

• From Grammars to Parameters: Automatic Design of Iterated Greedy Algorithms (PDF)
  Manuel LÓpez-ibaÑez (Université Libre de Bruxelles)
  Co-authors: Franco Mascia, Jérémie Dubois-Lacoste and Thomas Stützle
  
• Automatic algorithm selection for multi-mode resource-constrained project scheduling problems (PDF)
  Tommy Messelis (KU Leuven kulak)
  Co-authors: Patrick De Causmaecker
  
• Predicting parameter configurations for tuning effective algorithms on very large instances (PDF)
  Franco Mascia (Université Libre de Bruxelles (ULB))
  Co-authors: Mauro Birattari and Thomas Stützle
  
• An Approach to the Automatic Configuration of a Generalized Metaheuristic Structures (PDF)
  Marie-eléonore Marmion (Université Libre de Bruxelles)
  Co-authors: Franco Mascia, Manuel López-Ibáñez, Thomas Stützle
  

• SIMEDIS disaster management simulator: major road traffic accident (PDF)
  Christophe Ullrich (Royal Military Academy)
  Co-authors: F. Van Utterbeeck, M. Debacker, E. Dhondt
  
• Two-stage stochastic integer programming models for strategic disaster preparedness (PDF)
  Alper Döyen (University of Liege)
  Co-authors: Necati Aras,Yasemin Arda
  
• Generation of synthetic water distribution networks (PDF)
  Annelies De Corte (University of Antwerp)
  Co-authors: Kenneth Sörensen
  
• A Class Representative Model for Pure Parsimony Haplotyping under Uncertain Data (PDF)
  Luciano Porretta (Université Libre de Bruxelles)
  Co-authors: D. Catanzaro, M. Labbe
  

• Progressive multi-objective optimization (PDF)
  Kenneth Sörensen (Universiteit Antwerpen)
  Co-authors: Johan Springael
  
• Elicitation procedures for the comparison of decisional maps (PDF)
  Valérie Brison (UMONS, Faculté Polytechnique)
  Co-authors: Marc Pirlot
  
• Designing a combinatorial auction for Solids (PDF)
  Dries Goossens (KU Leuven)
  Co-authors: Frits Spieksma, Sander Onderstal, Jan Pijnacker
  
• On a queue with customer deadlines (PDF)
  Tom Maertens (Ghent University)
  Co-authors: Herwig Bruneel