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A novel proof of useful work for a blockchain storing transportation transactions
(
Elsevier
, 2022 , Article)
Proof-of-Work (PoW) is a common mechanism used to validate peer-to-peer transactions and maintain highly secured immutability of the blockchain. However, this mechanism has been criticized due to its inefficient use of ...
A novel model and decomposition approach for the integrated airline fleet assignment, aircraft routing, and crew pairing problem
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2017 , Article)
Given a daily flight schedule and a set of aircraft fleets, the airline scheduling problem assigns individual aircraft and groups of crew to each flight based on specific considerations of aircraft maintenance requirements ...
An integrated approach for airline flight selection and timing, fleet assignment, and aircraft routing
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2013 , Article)
Airline profits critically depend on the nature and efficiency of service they provide and accrue from a complex planning process involving schedule design fleet assignment aircraft routing and crew scheduling which are ...
Exact approaches for routing capacitated electric vehicles
(
Elsevier
, 2020 , Article)
We investigate a variant of the standard Capacitated Vehicle Routing Problem (CVRP), where each vehicle is powered exclusively by electricity stored in its rechargeable battery. Consequently, each vehicle should visit not ...
A simulation-optimization approach for the stochastic discrete cost multicommodity flow problem
(
Taylor and Francis Ltd.
, 2020 , Article)
This article addresses a variant of the Discrete Cost Multicommodity Flow (DCMF) problem with random demands, where a penalty is incurred for each unrouted demand. The problem requires finding a network topology that ...
A hybrid simulation-optimization approach for the robust Discrete Time/Cost Trade-off Problem
(
Elsevier
, 2015 , Article)
We investigate a stochastic Discrete Time/Cost Trade-off Problem. This multimode project scheduling problem, requires assigning modes to activities, and scheduling the activities so that the sum of the activities cost and ...
An assignment-based lower bound for a class of two-machine flow shop problems
(2013 , Article)
We present an assignment-based lower bound that is valid for a wide class of two-machine flow shop problems with a regular additive performance criterion. We provide empirical evidence that this new bound consistently ...
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 ...