A Vehicle Routing Problem in Glass Waste Collection

Speaker: Gerhard Wäscher

Title: A Vehicle Routing Problem in Glass Waste Collection

Date & Time: 16:00, Oct.31, 2017

Location: M842 / Lecture Hall, M842, BISEC, Scientific Research Building M


In this presentation a capacitated vehicle routing problem is considered which occursin the context of glass waste collection. Supplies of several different producttypes (glass waste of different colors) are available at glass waste containerlocations. The supplies have to be picked up at their locations and moved to acentral depot at minimum cost. Different product types may be transported onthe same vehicle, however, while being transported they must not be mixed. Aspecific device allows for separating the capacity of each vehicle individuallyinto a limited number of compartments where each compartment can accommodateone or several supplies of the same product type. For solving this problem amathematical model has been implemented by means of IBM ILOG CPLEX. For largeinstances in particular, a heuristic solution approach, namely a variableneighborhood search, has been developed and implemented. The two approacheshave been evaluated in extensive numerical experiments, both on randomlygenerated problem instances and on real world data.

About the speaker:

Gerhard Wäscher served as Professor and Chair of Management Science at Otto-von-Guericke University Magdeburg from 2002 to 2017. He received a PhD in Economic Sciences from Ruhr-University Bochum in1981 and his Habilitation from the University of Stuttgart in 1990. Before hemoved to Magdeburg, he has held positions of a full professor of management at the universities of Heidelberg (1990/91), Braunschweig(1991-1995) and Halle (1995-2002). He has also held guest professorships or visiting appointments at theUniversity of Vienna, the University of St. Gallen, Tong-Ji University Shanghai, Monash University Melbourne, Macquarie University Sydney and others. In 2015,he was appointed as a permanent guest professor and adjunct professor by Beijing Jiaotong University.

Prof. Wäscher has (co-) authored fivemonographs more than 60 papers and (co-)edited more than 15 special issues ofscientific journals or conference proceedings. He has also served and is stillserving on the editorial boards of renowned international journals, e.g. the European Journal of Operational Research, OR Spectrum, Central European Journalof Operations Research and Business Research. His current research interestsrefer to the development and application of quantitative approaches tomanagement problems in production and logistics management. In this field hehas also been involved in various consulting projects for organizations inindustry and administration.

Professionally, Prof. Wäscher has been a member of the Executive Committee of EURO – The Association of European Operational Research Societies for nine years, of which he served as its Presidentin 2013 and 2014. From 2003 to 2006, he was also Chairman of the Executive Committee of GOR, the German Operations Research Society.