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A preemptive bound for the Resource Constrained Project Scheduling Problem
(
Springer US
, 2014 , Article)
The Resource Constrained Project Scheduling Problem is one of the most intensively investigated scheduling problems. It requires scheduling a set of interrelated activities, while considering precedence relationships, and ...
Solving a large-scale integrated fleet assignment and crew pairing problem
(
Springer New York LLC
, 2017 , Article)
Airline schedule planning problems are typically decomposed into smaller problems, which are solved in a sequential manner, due to the complexity of the overall problems. This results in suboptimal solutions as well as ...
Optimal design of a district cooling grid: structure, technology integration, and operation
(
Taylor and Francis Ltd.
, 2019 , Article)
The concept of a district cooling grid that allows the integration of several cooling technologies with different availability and supply patterns is introduced. An integrated multi-period optimization model for a district ...
A simulation-optimisation approach for supply chain network design under supply and demand uncertainties
(
Taylor and Francis Ltd.
, 2017 , Article)
We investigate a three-echelon stochastic supply chain network design problem. The problem requires selecting suppliers, determining warehouses locations and sizing, as well as the material flows. The objective is to ...
Parcel delivery by vehicle and drone
(
Taylor and Francis Ltd.
, 2019 , Article)
We investigate a single-vehicle parcel delivery problem in which customers may be served either by the vehicle or by a portable companion drone launched from the vehicle. The problem may be viewed as a Traveling Salesman ...
An optimization-based heuristic for the machine reassignment problem
(
Springer New York LLC
, 2016 , Article)
We address the machine reassignment problem proposed in the context of the ROADEF/EURO challenge 2012 in partnership with Google. The problem consists in reassigning a set of processes to a set of multiple-resource machines ...
Optimization-based very large-scale neighborhood search for generalized assignment problems with location/allocation considerations
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2016 , Article)
This paper introduces a novel class of generalized assignment problems with location/allocation considerations that arises in several applications including retail shelf space allocation. We consider a set of items where ...
Exact solution methods for a generalized assignment problem with location/allocation considerations
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2016 , Article)
We investigate modeling approaches and exact solution methods for a generalized assignment problem with location/allocation (GAPLA) considerations. In contrast with classical generalized assignment problems, each knapsack ...
A hybrid optimization-simulation approach for robust weekly aircraft routing and retiming
(
Elsevier Ltd
, 2017 , Article)
We address the robust weekly aircraft routing and retiming problem, which requires determining weekly schedules for a heterogeneous fleet that maximizes the aircraft on-time performance, minimizes the total delay, and ...
A model and optimization-based heuristic for the operational aircraft maintenance routing problem
(
Elsevier Ltd
, 2016 , Article)
This paper investigates the Operational Aircraft Maintenance Routing Problem (OAMRP). Given a set of flights for a specific homogeneous fleet type, this short-term planning problem requires building feasible aircraft routes ...