Results 31 to 40 of about 250 (77)

CP methods for scheduling and routing with time-dependent task costs

open access: yesEURO Journal on Computational Optimization, 2014
A particularly difficult class of scheduling and routing problems involves an objective that is a sum of time-varying action costs, which increases the size and complexity of such problems. Solve-and-improve approaches, which find an initial solution for
Elena Kelareva   +2 more
doaj  

A case study of Consistent Vehicle Routing Problem with Time Windows

open access: yes, 2020
We develop a heuristic for the Consistent Vehicle Routing Problem with Time Windows (ConVRPTW), which is motivated by a real-world application at a food company's distribution center.
Lespay, Hernán, Suchan, Karol
core   +1 more source

Trade-off between robustness and cost for a storage loading problem: rule-based scenario generation

open access: yesEURO Journal on Computational Optimization, 2018
Integrating uncertainties into the optimization process is crucial to obtain solutions suitable for practical needs. In particular, the considered uncertainty set has a huge impact on the quality of the computed solutions.
Christina Büsing   +2 more
doaj  

Optimal picking of large orders in carousel systems [PDF]

open access: yes, 2004
A carousel is an automated storage and retrieval system which consists of a circular disk with a large number of shelves and drawers along its circumference.
Litvak, N.
core   +1 more source

Network design to anticipate selfish evacuation routing

open access: yesEURO Journal on Computational Optimization, 2016
When a disaster occurs the population of the endangered zone must sometimes be evacuated as fast as possible. In this case, a large number of vehicles move through a street network to reach safe areas.
A. Kimms, K. Seekircher
doaj  

Problema de contratación de carretilleros para un almacén de productos manufacturados [PDF]

open access: yes, 2002
En este trabajo se analiza un problema planteado recientemente a sus autores por una empresa fabricante de componentes de automóviles. Dicha empresa almacena sus productos manufacturados hasta que los clientes (compradores) pasan a recogerlos.
Alegre, J. F.   +2 more
core   +1 more source

On the second boundary value problem for Monge-Ampere type equations and geometric optics

open access: yes, 2018
In this paper, we prove the existence of classical solutions to second boundary value prob- lems for generated prescribed Jacobian equations, as recently developed by the second author, thereby obtaining extensions of classical solvability of optimal ...
Jiang, Feida, Trudinger, Neil S.
core   +1 more source

A unified matheuristic for solving multi-constrained traveling salesman problems with profits

open access: yesEURO Journal on Computational Optimization, 2017
In this paper, we address a rich Traveling Salesman Problem with Profits encountered in several real-life cases. We propose a unified solution approach based on variable neighborhood search.
Rahma Lahyani   +2 more
doaj  

A Solution Algorithm for Interval Transportation Problems via Time-Cost Tradeoff [PDF]

open access: yes, 2018
In this paper, an algorithm for solving interval time-cost tradeoff transportation problemsis presented. In this problem, all the demands are defined as intervalto determine more realistic duration and cost.
Albayrak, Inci   +2 more
core   +2 more sources

A multi-material transport problem and its convex relaxation via rectifiable $G$-currents

open access: yes, 2019
In this paper we study a variant of the branched transportation problem, that we call multi-material transport problem. This is a transportation problem, where distinct commodities are transported simultaneously along a network.
Andrea Marchese   +5 more
core   +1 more source

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