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Solving a large-scale crew pairing problem
(
Palgrave Macmillan Ltd.
, 2015 , Article)
Airline companies seek to solve the problem of determining an assignment of crews to a pre-determined flight schedule with minimum total cost, called the Crew Pairing Problem (CPP). Most of the existing studies focus on ...
A model for enhancing robustness of aircraft and passenger connections
(
Elsevier
, 2013 , Article)
Airlines schedules are often subject to various uncontrollable factors that cause disruptions and delays. These delays not only constitute, for many passengers, the painful part of air travel, but also represent for airlines ...
Enhanced compact models for the connected subgraph problem and for the shortest path problem in digraphs with negative cycles
(2013 , Article)
We investigate the minimum-weight connected subgraph problem. The importance of this problem stems from the fact that it constitutes the backbone of many network design problems having applications in several areas including ...
Improved bounds for hybrid flow shop scheduling with multiprocessor tasks
(2013 , Article)
In this paper, we investigate the problem of minimizing makespan in a multistage hybrid flow-shop scheduling with multiprocessor tasks. To generate high-quality approximate solutions to this challenging NP-hard problem, ...
Optimization models for a single-plant District Cooling System
(
Elsevier
, 2015 , Article)
A District Cooling System (DCS) is an interconnected system encompassing a centralized chiller plant, a Thermal Energy Storage (TES) unit, a piping network, and clusters of consumers' buildings. The main function of a DCS ...
A branch-and-price algorithm for the two-stage guillotine cutting stock problem
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Palgrave Macmillan Ltd.
, 2013 , Article)
We investigate the two-stage guillotine two-dimensional cutting stock problem. This problem commonly arises in the industry when small rectangular items need to be cut out of large stock sheets. We propose an integer ...
An exact algorithm for the single machine problem with unavailability periods
(
Inderscience Publishers
, 2015 , Article)
We investigate the single machine scheduling problem with job release dates and due dates, and multiple planned unavailability time periods. This problem arises in the context of machine scheduling with planned preventive ...
A lifted compact formulation for the daily aircraft maintenance routing problem
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2013 , Article)
Given a set of flights for a specific fleet type the aircraft routing problem (ARP) determines the flying sequence for each individual aircraft while incorporating specific considerations of minimum turn time maintenance ...
Optimal planning of liquefied natural gas deliveries
(
Elsevier
, 2016 , Article)
We investigate the problem of designing an optimal annual delivery plan for Liquefied Natural Gas (LNG). This problem requires determining the long-term cargo delivery dates and the assignment of vessels to the cargoes ...
Controlling the sensing performance of rGO filled PVDF nanocomposite with the addition of secondary nanofillers
(
Elsevier Ltd
, 2018 , Article)
This study reports the synthesis and characterization of polyvinylidene fluoride (PVDF) nanocomposites containing binary filler combination of reduced graphene oxide and titanium dioxide (TiO2) nanotubes. The PVDF nanocomposite ...