Search results for "Time limit"

showing 4 items of 4 documents

A branch-and-cut algorithm for the Orienteering Arc Routing Problem

2016

[EN] In arc routing problems, customers are located on arcs, and routes of minimum cost have to be identified. In the Orienteering Arc Routing Problem (OARP),in addition to a set of regular customers that have to be serviced, a set of potential customers is available. From this latter set, customers have to be chosen on the basis of an associated profit. The objective is to find a route servicing the customers which maximize the total profit collected while satisfying a given time limit on the route.In this paper, we describe large families of facet-inducing inequalities for the OARP and present a branch-and-cut algorithm for its solution. The exact algorithm embeds a procedure which builds…

Mathematical optimization021103 operations researchGeneral Computer Science0211 other engineering and technologiesOrienteering02 engineering and technologyManagement Science and Operations ResearchTime limitRouting problems with profitsPolyhedronExact algorithmOrienteering Arc Routing ProblemBranch-and-cutModeling and Simulation0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processingDestination-Sequenced Distance Vector routingMATEMATICA APLICADAInteger programmingArc routingAlgorithmBranch and cutMathematicsComputers & Operations Research
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Knowledge construction about port performance evaluation: An international literature analysis

2017

Purpose: This study aims to identify and analyze the characteristics of international scientific research that addresses the segment of literature referring to port performance evaluation, in order to identify the existence of a theoretical alignment between the concept of performance evaluation, as an area of knowledge, and the practical application of port performance evaluation. Design/methodology: For the approach to the problem, this paper makes use of qualitative research, analyzing bibliographical portfolio characteristics related to port performance evaluation. An action research strategy was adopted, according to which the authors selected the bibliographical portfolio based on ana…

Organizational Behavior and Human Resource ManagementKnowledge managementPorts -- Direcció i administracióComputer scienceStrategy and Managementmedia_common.quotation_subjectlcsh:ATime horizonEducationPortOriginalityManagement of Technology and InnovationAccountingBusiness and International ManagementAction research:Nàutica::Infraestructures portuàries [Àrees temàtiques de la UPC]media_commonLiterature reviewbusiness.industryInterpretation (philosophy)Harbors--ManagementTime limitPort (computer networking)Treball -- MesuramentPerformance evaluationPortfolioPerformance--Evaluationlcsh:General WorksbusinessPerformance Evaluation Literature review PortQualitative researchIntangible Capital
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The relaxation-time limit in the quantum hydrodynamic equations for semiconductors

2006

Abstract The relaxation-time limit from the quantum hydrodynamic model to the quantum drift–diffusion equations in R 3 is shown for solutions which are small perturbations of the steady state. The quantum hydrodynamic equations consist of the isentropic Euler equations for the particle density and current density including the quantum Bohm potential and a momentum relaxation term. The momentum equation is highly nonlinear and contains a dispersive term with third-order derivatives. The equations are self-consistently coupled to the Poisson equation for the electrostatic potential. The relaxation-time limit is performed both in the stationary and the transient model. The main assumptions are…

PhysicsIndependent equationApplied MathematicsGlobal relaxation-time limitQuantum hydrodynamic equationsEuler equationsMomentumNonlinear systemsymbols.namesakeClassical mechanicsThird-order derivativesMaster equationQuantum drift–diffusion equationssymbolsMethod of quantum characteristicsPoisson's equationQuantum dissipationAnalysisJournal of Differential Equations
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Expiration of Time Limits and the Ius Appellationis

2022

The rotal decree under comment offers the cue to address the delicate topic of the appeal and the peremptory time limits for its presentation, especially in light of the recent reform of the canonical matrimonial process promulgated by Pope Francis.On the basis of the new structure of the process of matrimonial nullity appears, in fact, evident the legislative disfavor, towards the appeal, seen as a potentially dangerous tool for the salus animarum of the faithful for the risk of procedural lengths connected to it, so as to provide for a prior examination of admissibility in order to avoid that they were made for the purpose of mere dilatory, that is, for the sole purpose of lengthening the…

rotal decreeComputer Networks and CommunicationsHardware and Architectureappealperemptory time limitRota Romanacanonical matrimonial proceSoftware
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