WorldCat Identities

Quirion-Blais, Olivier

Overview
Works: 4 works in 6 publications in 2 languages and 6 library holdings
Genres: Academic theses 
Roles: Author
Classifications: QA402.5, 519.6
Publication Timeline
.
Most widely held works by Olivier Quirion-Blais
Méthodologie d'évaluation de la demande de chaleur des groupes de bâtiments dans le cadre d'une étude de faisabilité du chauffage urbain by Québec) École polytechnique (Montréal( Book )

2 editions published between 2010 and 2011 in French and held by 2 WorldCat member libraries worldwide

Solving the large-scale min-max K-rural postman problem for snow plowing by Olivier Quirion-Blais( )

2 editions published in 2016 in English and held by 2 WorldCat member libraries worldwide

Optimisation de tournées de véhicules en viabilité hivernale by Olivier Quirion-Blais( )

1 edition published in 2017 in French and held by 1 WorldCat member library worldwide

En plus, la considération des contraintes de restrictions rue/véhicule a été ajoutée dans l'algorithme. Les résultats démontrent que l'algorithme permet effectivement de concevoir des tournées qui respectent les contraintes de la nouvelle étude de cas. Cet outil permet donc de tirer profit de l'interaction entre les divers types de véhicules. La contribution souligne également l'utilité d'un tel outil pour supporter l'analyse des besoins justifiant l'achat de nouveaux véhicules. En parallèle aux développements algorithmiques, des méthodes d'importation et d'exportation des données provenant des cas d'étude réels sont aussi développées. Dès le départ, il a été choisi d'utiliser des fichiers de type Shapefile comme source de données en raison de sa grande disponibilité et de la compatibilité avec les système d'information géographique (SIG). Une méthode pour passer du réseau géographique vers un réseau mathématique a donc été améliorée au cours des travaux. Alors qu'au début des travaux de la thèse, il fallait passer par un chiffrier Microsoft ExcelTM pour ensuite importer les données dans le code, à la fin, une méthode automatisée permet l'importation directe à partir des fichiers Shapefiles vers le code de la métaheuristique. Quant aux résultats obtenus, ils furent obtenus dans les premières étapes sous forment de représentations géographiques dans un SIG ainsi que des feuilles d'instructions indiquant les étapes, coin de rue par coin de rue, aux opérateurs de véhicules. De ce côté, les développements ont permis d'obtenir des fichiers de type KML. Ce type de fichier est compatible avec plusieurs logiciels et applications, dont Google EarthviewTM et des applications de guidage routier sur des appareils mobiles
Development of a decision support tool for optimizing the short-term logistics of forest-based biomass( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Highlights: Transshipment and routing models are developed for short-term biomass logistics. The models include biomass storage, pre-processing, and truck routing decisions. Models are applied to a large forest-based biomass logistics company. Average reduction of 12% in cost and fuel consumption is observed using the models. An Excel-based decision support tool is developed for the company. Abstract: High cost of logistics is one of the barriers of using forest-based biomass for energy and fuel production. Biomass logistics is complex and includes interdependent decisions related to storage, pre-processing and transportation. While these decisions have been considered in numerous medium-term planning models, those for short-term planning are limited. The existing models focused only on optimal truck routing without considering intermediate storage facilities which are essential to match biomass supply and demand. In this study, a decomposition-based approach is used and optimization models are developed for the short-term planning of a large biomass logistics company located in the Lower Mainland region of British Columbia, Canada. The company deals with collection, storage, pre-processing and transportation of biomass. Several operational constraints related to truck-location compatibilities and truck-biomass compatibilities arising from heterogeneity of trucks and biomass types which further complicate the logistics planning are incorporated in the models. First, a transshipment model is developed and solved using a mixed integer formulation to determine comminution schedules and the number of truckloads of each biomass type to be transported each day using each type of truck. Then, a routing model, which uses the results of the transshipment model, is developed to determine the optimal routing for the available trucks. A decision support tool to optimize the company's weekly transportation and comminution operations is also developed for the company. Experiments were conducted on real data from the company over a span of four weeks. The results indicate 12% reduction in the total average cost and a similar reduction in fuel consumption compared to the actual routes implemented by the company. It is suggested that savings could be obtained by using larger trucks for longer distance transportation and smaller trucks for shorter distances. Direct delivery of biomass from suppliers to customers, bypassing the yard, could result in cost savings
 
Audience Level
0
Audience Level
1
  General Special  
Audience level: 0.00 (from 0.00 for Méthodolo ... to 0.00 for Méthodolo ...)

Associated Subjects
Languages