简介:ThispaperaddressesthesupplychainengineeringanditsapplicationinChina’sretailingindustry.Basedontheapproachesofsystemsengineering,weproposetheconceptofsupplychainengineering,whichappliestheideaofsupplychainmanagementtotheengineeringpracticesthroughtheadvancedinformationandmanagementtechnology,tointegratethesupplychainsystemandoptimizeitsoperations.WethenillustratetheapplicationofthesupplychainengineeringinChina’sretailingindustry.Insuchpractices,wedevelopedthevirtualretailingenterprisemodeandtheFROM-SCMsystem,anddesignedthesalesassistantetc.SuchtheoryandpracticesaresuccessfullyappliedinMeiyijia,whichhastransformedMeiyijiafromatraditionalretailertoamodernserviceenterprise,andtheprofitsareresultedfromtheservicefeesratherthanthetraditionalsurplusbetweenbuyingandsellingprices.NowMeiyijiahasbuiltanecosystemwiththeretailerinthecore,theheadquarterastheserviceplatform.ThesuccessofMeiyijiainrecentyearsshowstheeffectivenessofthesupplychainengineering.
简介:Inthispaper,weinvestigatethedisparitiesofChina’sinsurancemarketfromtheviewpointofgeographyandenterprisebyusingthemonthlydatafromJanuary2006toDecember2015.Wedividethewholeinsurancemarketintotwoparts,namelypropertyinsuranceandpersonalinsurance.Byconstructingandanalyzingminimumspanningtreesofinsurancemarket,weobtaintheresultsasfollows:(i)Theconnectionsbetweenprovincesaremuchcloserthanthoseoffirms,andthereareregionallinksbetweenneighboringprovincesintheminimumspanningtree(MST);and(ii)thedomesticfundedfirmsandforeignfundedfirmsformtwoexplicitclustersintheMSTsofpropertyandpersonalinsurancemarket.
简介:Inthiseraofadata-drivensociety,usefuldata(BigData)isoftenunintentionallyignoredduetolackofconvenienttoolsandexpensivesoftware.Forexample,weblogfilescanbeusedtoidentifyexplicitinformationofbrowsingpatternswhenusersaccesswebsites.Somehiddeninformation,however,cannotbedirectlyderivedfromthelogfiles.Wemayneedexternalresourcestodiscovermoreknowledgefrombrowsingpatterns.Thepurposeofthisstudyistoinvestigatetheapplicationofwebusageminingbasedonweblogfiles.Theoutcomeofthisstudysetsfurtherdirectionsofthisinvestigationonwhatandhowimplicitinformationembeddedinlogfilescanbeefficientlyandeffectivelyextracted.Furtherworkinvolvescombiningtheuseofsocialmediadatatoimprovebusinessdecisionquality.
简介:TheestablishmentoftheChinaPilotFreeTradeZone(FTZ)hassignificantlypromotedinternationaltrade,financialdevelopment,andeconomicgrowth.Buildinginternationalfinancialcenters(IFCs)satisfiesthedemandforFTZstofacilitatefinancialdevelopment,aswellaspromotingeconomicgrowth.Thus,successfullypredictingthenextIFCinChinaundertheFTZframeworkisanimportantissue.Inthisstudy,weappliedgreyrelationalanalysiscombinedwithentropymethodtopredictpotentialIFCsamongsevenFTZcities.Accordingtotheresults,ourinterestingfindingsinclude:1)the'totalstockturnover','totalvalueofimportsandexports',and'ForeignDirectInvestment(FDI)'arekeyindicatorsfordeterminingfutureIFCs;2)amongsevencities,ShenzhenandTianjinarehighlylikelytobecomethenextIFCs,whileShanghaiisalreadyanIFC.
简介:Acommonfeatureofpreviousstudiesabouttheapplicationofdataenvelopmentanalysis(DEA)todetermineenvironmentalandeconomicefficienciesisthatthetwowereanalyzedinseparatemodelsorframeworks.Thepurposeofthispaperistoanalyzetheeconomicefficiencyandenvironmentalefficiencywithasinglemodel.ThispaperproposesanintegratedDEAmodel,basedonamodificationofthedirectionaldistancefunction,whichallowsustodecomposetheeco-efficiency(EE)intotheeconomicefficiency(ECE)andenvironmentalefficiency(ENE).TheECEcharacterizestheabilityofgainingeconomicbenefitswhiletheENEcharacterizestheabilitytocontrolpollutantemissionsinproductionactivities.IdentificationofECEandENEcanhelpdecisionmakersofdifferentregionsdetectwhatkindoffactor(economicinefficiencyorenvironmentalinefficiency)isthemainsourceofeco-inefficiency.ThiscanhelpdecisionmakersmoretargetedtoimproveEE.Toillustratethefeasibilityofourapproach,acasestudyof30regionsinChinaispresented.Theempiricalresultsshowthatalmostallregionshaveveryhigheconomicefficiencies.Theenvironmentalinefficiencyisthemainsourceofeco-inefficiency.Thedifferencesofenvironmentalefficienciesleadtothedifferencesofeco-efficienciesintheeast,centralandwestareas,whiletheeconomicefficienciesdonothavesignificantdifferencesamongtheseareas.Theeconomicefficienciesshowedanopposite'V'shapeandtheenvironmentalefficienciesshowedadecreasingtrendduringtheperiod2010–2014.
简介:ThispaperfocussesontheinformationasymmetryincrisisnewsafteraseriousincidentinTianjin,China,in2015.Theincidentcausedenormousdamageandresultedinsocietalunrestbecauseofthelackofreliableinformationfromtheformalmediachannels.Socialmedia—microblogs—playedamajorroleinreportingoncrisissituations.Wedividednetizens(i.e.,thecitizensofthenet)intohighandlowtypesaccordingtotheirinformation-criticalleveltothecrisisnews.Thedatashowsinformationdeteriorationonthecrisisnews,relatedtothenetizens’information-criticallevel.Forthetraditionalmediathereistheopportunitytouseinformationqualitydistortiontomakemoremarginalprofits.Thisispossibleonlyifthecitizens’informationstaysunderacertainqualitylevel.Theresultisoverprovisionoflowqualitynewsandhighqualitynewsdrivenoutofthemarket,whereuponadverseselection(i.e.,alackofsymmetricinformation)appears.However,byadoptingaprocessview,wefoundself-correctingmechanism(i.e.,dyingoutofrumors)ofthesocialmediacommunitiesinChina.Weprovidedaagent-basemodelandsimulationtoshowthatthemoremediaexistinthemarket,thefasterspeedoftheinformationdeterioration,butalsothecapacityto‘discuss’rumors.
简介:Thispaperstudiestheoptimalconsumption-investmentstrategywithHeston’sstochasticvolatility(SV)modelunderhyperbolicabsoluteriskaversion(HARA)utilitycriterion.Thefinancialmarketiscomposedofarisk-lessassetandariskyasset,whosepriceprocessissupposedtobedrivenbyHeston’sSVmodel.TheriskypreferenceoftheindividualisassumedtosatisfyHARAutility,whichrecoverspowerutility,exponentialutilityandlogarithmutilityasspecialcases.HARAutilityisofgeneralframeworkintheutilitytheoryandisseldomstudiedintheexistingliteratures.Legendretransform-dualtechniquealongwithstochasticdynamicprogrammingprincipleispresentedtodealwithourproblemandtheclosed-formsolutiontotheoptimalconsumption-investmentstrategyissuccessfullyobtained.Finally,somespecialcasesarederivedindetail.