基于互联网的连锁企业的物流管理系统.docx

基于互联网的连锁企业的物流管理系统.docx

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基于互联网的连锁企业的物流管理系统

Aninternet-basedlogisticsmanagementsystemforenterprisechains

N.Prindezis,C.T.Kiranoudis

SchoolofChemicalEngineering,NationalTechnicalUniversity,15780Athens,Greece

Received13September2003;receivedinrevisedform20December2003;accepted27January2004

Availableonline10December2004

Abstract

ThispaperpresentsanInternet-BasedLogisticsManagementSystemtocoordinateanddisseminatetasksandrelatedinformationforsolvingtheheterogeneousvehicleroutingproblemusingappropriatemetaheuristictechniques,foruseinenterprisechainnetworks.ItsarchitectureinvolvesaJAVAWebappletequippedwithinteractivecommunicationcapabilitiesbetweenperipheralsoftwaretools.ThesystemwasdevelopedindistributedsoftwarefashiontechnologyforallcomputerplatformsutilizingaWebbrowser,focusingonthedetailedroadnetworkofAthensandtheneedsoftheAthensCentralFoodMarketenterprises.2004ElsevierLtd.Allrightsreserved.

Keywords:

Decisionsupportsystem;e-Logistics;Transportation;Vehicleroutingproblem

1.Introduction

Enterprisechainsarethebusinessmodelofthepresentandfutureregardingmarketsthatinvolvesmallandmediumcompanysizes.Clearly,groupingactivitiestowardsafocusedtargetfacilitatesanunderstandablyimprovedmarketpenetrationguaranteedbyasuccessfultrademarkofaleadingcompanyinthefield.Severalcollaborationmodelsthatbasicallyincludefranchisingareintroducedasapartofthisintegratedprocess.Whensuchanetworkisintroducedinordertoexploitacommercialideaorbusinessinitiativeandsubsequentlyexpandedasmarketpenetrationgrows,severalmanagementissuesariseregardingtheoperationsoftheentirenetwork.SuchanetworkistheidealplacefororganizingandevaluatinginamorecentralizedwayseveralordinaryoperationsregardingsupplychainandlogisticsInfact,toolsdevelopedfororganizingmanagementprocessesandoperationalneedsofeachindividualcompany,canbedevelopedinamorecentralizedfashionandtheservicesprovidedbythetoolcanbeofferedtoeachnetworkmembertofacilitatetransactionsandtackleoperationssimilarly.Web-basedapplicationsareanidealstartingplacefordevelopingsuchapplications.Typicallysuchsystemsserveasacentraldepotfordistributingcommonservicesinthefieldoflogistics.Thecommercialapplicationisstoredinacentralserverandservicesareprovidedforeachmemberofthegroup.Aprototypeofsuchaserverisdescribedinapreviouswork（Prindezis,Kiranoudis,&Marinos-Kouris,2003）.ThispaperpresentsthecompletedinternetsystemthatisinstalledinthecentralwebserveroftheAthensCentralFoodMarketthatdealswiththeintegratedproblemofdistributionfor690companiesthatcompriseauniquelogisticsandretailchainofenterprises.Theneedsofeachcompanyareunderlinedandthealgorithmsdevelopedaredescribedwithintheunifiedinternetenvironment.Theproblemsolvedandservicesprovidedforeachcompanyistheoneinvolvingdistributionofgoodsthroughaheterogeneousfleetoftrucks.Newinsightsofthemetaheuristicsemployedareprovided.Acharacteristiccasestudyispresentedtoillustratetheeffectivenessoftheproposedapproachforareal-worldproblemofdistributionthroughthedetailedroadnetworkofAthens.

2.Distributionthroughheterogeneousvehiclefleets

Thefleetmanagementproblempresentedinthispaperrequirestheuseofaheterogeneousfleetofvehiclesthatdistributegoodsthroughanetworkofclients

（Tarantilis,Kiranoudis,&Vassiliadis,2003,2004）.Therefore,thesystemwasdesignedinordertoautomaticallygeneratevehicleroutes（whichvehiclesshouldde-

livertowhichcustomersandinwhichorder）,usingrational,quantitative,spatialandnon-spatialinformationandminimizingsimultaneouslythevehiclecostandthetotaldistancetravelledbythevehicles,subjecttothefollowingconstraints:

●eachvehiclehasapredeterminedloadcapacity,typicallydifferentfromallothervehiclescomprisingthefleet（heterogeneousnature）,

●thecapacityofavehiclecannotbeexceeded,

●asinglevehiclesupplieseachcustomersdemand,

●thenumberofvehiclesusedispredetermined.

TheproblemhasanobviouscommercialvalueandhasdrawntheattentionofORcommunity.Itsgreatsuccesscanbeattributedtothefactthatitisaveryinterestingproblembothfromthepracticalandtheoreticalpointsofview.Regardingthepracticalpointofview,thedistributionprobleminvolveddefinitelyplaysacentralroleintheefficiencyoftheoperationalplanninglevelofdistributionmanagement,producingeconomicalroutesthatcontributetothereductionofdistributioncosts,offeringsimultaneouslysignificantsavingsinallrelatedexpenses（capital,fuelcosts,driversalaries）.ItsImportanceinthepracticallevel,motivatedinte