简介:Weconsideramanpowerplanningproblemwithsingleemployeetypeoveralongplanninghorizonandanalyzetheoptimalrecruitmentanddismissalpolices.Dynamicdemandsformanpowermustbefulfilledbyallocatingenoughnumberofemployees.Costsforeveryemployeeincludesalary,recruitmentanddismissalcosts,inparticular,setupcostswhenrecruitment/dismissalactivitiesoccur.Weformulatetheproblemasamulti-perioddecisionmodel.Thenweanalyzepropertiesoftheproblemandgiveanimproveddynamicprogrammingalgorithmtominimizethetotalcostovertheentireplanninghorizon.Wereportcomputationalresultstoillustratetheeffectivenessoftheapproach.
简介:Aclonalselectionbasedmemeticalgorithmisproposedforsolvingjobshopschedulingproblemsinthispaper.Intheproposedalgorithm,theclonalselectionandthelocalsearchmechanismaredesignedtoenhanceexplorationandexploitation.Intheclonalselectionmechanism,clonalselection,hypermutationandreceptoredittheoriesarepresentedtoconstructanevolutionarysearchingmechanismwhichisusedforexploration.Inthelocalsearchmechanism,asimulatedannealinglocalsearchalgorithmbasedonNowickiandSmutnicki'sneighborhoodispresentedtoexploitlocaloptima.Theproposedalgorithmisexaminedusingsomewell-knownbenchmarkproblems.Numericalresultsvalidatetheeffectivenessoftheproposedalgo-rithm.
简介:Whenassumingthesalespersons’psychologicalempowerment,engagementandjobsatisfactionastheindependentvariable,dependentvariableandinterveningvariablerespectively,it’sbeenfiguredoutthatthereexistsapositivecorrelationamongthesevariablesandthejobsatisfactionfunctionspartlyasamediator.Inotherwords,thepsychologicalempowerment’simpactofwork,autonomyandworkmeaningfunctionsprominentlytopredicateemployees’jobsatisfaction,andthesalary,self-developmentandworkenvironmentofjobsatisfactionaresignificantpredictorstopersonalengagement.Andamongthosefourfactorsofpsychologicalempowerment,onlytheworkmeaningcanpredictengagementremarkably.