Results 31 to 40 of about 205 (61)

Branch-and-price and heuristic column generation for the generalized truck-and-trailer routing problem [PDF]

open access: yes, 2011
The generalized truck-and-trailer routing problem (GTTRP) constitutes a uni¯ed model for vehicle routing problems with trailers and a fixed lorry-trailer assignment.
Drexl, Michael
core  

A model for setting services on auxiliary bus lines under congestion [PDF]

open access: yes, 2013
In this paper, a mathematical programming model and a heuristically derived solution is described to assist with the efficient planning of services for a set of auxiliary bus lines (a bus-bridging system) during disruptions of metro and rapid transit ...
Codina Sancho, Esteve   +2 more
core   +2 more sources

On Supmodular Matrices

open access: yes, 2023
We consider the problem of determining which matrices are permutable to be supmodular. We show that for small dimensions any matrix is permutable by a universal permutation or by a pair of permutations, while for higher dimensions no universal ...
Onn, Shmuel
core   +1 more source

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

On the First Entrance Time Distribution of the M/D/i Queue: A Combinatorial Approach [PDF]

open access: yes
AMS classifications: 60C05; 60K25; 90B06; 90B22M/D/1;delivery;first entrance times;lattice path ...
Jansen, J.B.
core   +1 more source

Models and applications of Optimal Transport in Economics, Traffic and Urban Planning

open access: yes, 2009
Some optimization or equilibrium problems involving somehow the concept of optimal transport are presented in these notes, mainly devoted to applications to economic and game theory settings.
Santambrogio, Filippo
core   +1 more source

Combinatorics and Geometry of Transportation Polytopes: An Update [PDF]

open access: yes, 2013
A transportation polytope consists of all multidimensional arrays or tables of non-negative real numbers that satisfy certain sum conditions on subsets of the entries.
De Loera, Jesús A., Kim, Edward D.
core  

Caracterización de parámetros físicos de las terminales de contenedores del sistema portuario español

open access: yesIngeniería y Ciencia, 2009
El empleo generalizado de ratios de gestión y explotación, tomados de bibliografía internacional que no se ajustan a la realidad del sistema portuario español, hace difícil planificar y gestionar la explotación de las terminales de contenedores españolas.
Nicoletta González-Cancelas   +1 more
doaj  

Internalizing negative externalities in vehicle routing problems through green taxes and green tolls [PDF]

open access: yes, 2019
Road freight transportation includes various internal and external costs that need to be accounted for in the construction of efficient routing plans. Typically, the resulting optimization problem is formulated as a vehicle routing problem in any of its ...
Faulìn, Javier   +1 more
core  

A new algorithm for the 2-period Balanced Traveling Salesman Problem in Euclidean graphs [PDF]

open access: yes
In a previous paper, we proposed two heuristic algorithms for the euclidean 2-period Balanced Travelling Salesman Problem (2B-TSP). In this problem, which arises from a similar one introduced by Butler et al., a certain number of customers must be ...
Francesco Mason, Tatiana Bassetto
core  

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