Results 31 to 40 of about 8,389 (162)

Optimization of multi objective vehicle routing problem using a new hybrid algorithm based on particle swarm optimization and artificial bee colony algorithm considering Precedence constraints

open access: yesAlexandria Engineering Journal, 2018
The vehicle routing problem is the basic problem of distribution planning which seeks to find the best route with minimum displacement cost considering the number of customers, their constraints, and number and capacity of the available vehicles. In this
Davoud Sedighizadeh, Houman Mazaheripour
doaj   +1 more source

Periodic schedules for linear precedence constraints

open access: yesDiscrete Applied Mathematics, 2009
We consider the computation of periodic cyclic schedules for linear precedence constraints graphs: a linear precedence constraint is defined between two tasks and induces an infinite set of usual precedence constraints between their executions such that the difference of iterations is a linear function. The objective function is the minimization of the
Hanen, Claire, Munier-Kordon, Alix
openaire   +2 more sources

Minimizing waiting time under precedence constraints in health examinations

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
The long waiting time between examinations is a serious issue in hospitals. This study explores how precedence constraints affect waiting times for examinees in health examination scheduling.
Mari ITO   +3 more
doaj   +1 more source

A hybrid approach for haptics-based intelligent assembly planning

open access: yesAdvances in Mechanical Engineering, 2016
Assembly planning is normally realized by automatic approach or interactive approach. Both of these methods have promising advantages, but they also have inevitable shortcomings.
Pingjun Xia
doaj   +1 more source

Special Issue on Algorithms for Scheduling Problems

open access: yesAlgorithms, 2018
This special issue of Algorithms is devoted to the development of scheduling algorithms based on innovative approaches for solving hard scheduling problems either exactly or approximately. Submissions were welcome both for traditional scheduling problems
Frank Werner   +2 more
doaj   +1 more source

OPTIMIZING THE STARTING POINT IN A PRECEDENCE CONSTRAINED ROUTING PROBLEM WITH COMPLICATED TRAVEL COST FUNCTIONS

open access: yesUral Mathematical Journal, 2018
We study the optimization of the initial state, route (a permutation of indices), and track in an extremal problem connected with visiting a finite system of megalopolises subject to precedence constraints where the travel cost functions may depend on ...
Alexander G. Chentsov   +2 more
doaj   +1 more source

Handling linear precedence constraints by unification [PDF]

open access: yesProceedings of the 30th annual meeting on Association for Computational Linguistics -, 1992
Linear precedence (LP) rules are widley used for stating word order principles. They have been adopted as constraints by HPSG but no encoding in the formalism has been provided. Since they only order siblings, they are not quite adequate, at least not for German.
Judith Engelkamp   +2 more
openaire   +1 more source

A Genetic Crow Search Algorithm for Optimization of Operation Sequencing in Process Planning

open access: yesApplied Sciences, 2021
Computer-aided process planning represents the main link between computer-aided design and computer-aided manufacturing. One of the crucial tasks in computer-aided process planning is an operation sequencing problem.
Mica Djurdjev   +5 more
doaj   +1 more source

Process planning optimization on turning machine tool using a hybrid genetic algorithm with local search approach

open access: yesAdvances in Mechanical Engineering, 2015
A turning machine tool is a kind of new type of machine tool that is equipped with more than one spindle and turret. The distinctive simultaneous and parallel processing abilities of turning machine tool increase the complexity of process planning.
Yuliang Su   +3 more
doaj   +1 more source

D2D Computation Offloading Optimization for Precedence-Constrained Tasks in Information-Centric IoT

open access: yesIEEE Access, 2019
This paper proposes a computation offloading scheme for precedence-constrained tasks in a base station-assisted device-to-device (D2D) scenario for the information-centric Internet of Things (IC-IoT).
Jindou Xie   +4 more
doaj   +1 more source

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