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Now showing items 11-20 of 26
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, ...
Green hydrogen for industrial sector decarbonization: Costs and impacts on hydrogen economy in qatar
(
Elsevier
, 2021 , Article)
This study focuses on the development of a strategic framework for the design of a hydrogen supply chain network (HSCN) mainly investigating the potential of industrial decarbonization and multi-sectors integration (i.e., ...
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 ...
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 ...
Robust optimization for the discrete time-cost tradeoff problem with cost uncertainty
(
Springer International Publishing
, 2015 , Book chapter)
Projects are subject to various sources of uncertainty that hamper reaching project targets; hence, it is crucial importance to use effective approaches to generate robust project schedules, which are less vulnerable to ...
A particle swarm optimization approach for predicting the number of COVID-19 deaths
(
Nature Research
, 2021 , Article)
The rapid spread of the COVID-19 pandemic has raised huge concerns about the prospect of a major health disaster that would result in a huge number of deaths. This anxiety was largely fueled by the fact that the severe ...
A matheuristic for the robust integrated airline fleet assignment, aircraft routing, and crew pairing problem
(
Elsevier
, 2022 , Article)
We address an integrated airline scheduling problem that combines three airline planning processes: fleet assignment, aircraft routing, and crew pairing. For a given daily flight schedule, the problem requires simultaneously ...
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 ...