简介:Thispaperconsidersaworst-caseinvestmentoptimizationproblemwithdelayforafundmanagerwhoisinacrash-threatenedfinancialmarket.Drivenbyexistingofcapitalinflow/outflowrelatedtohistoryperformance,weinvestigatetheoptimalinvestmentstrategiesundertheworst-casescenarioandthestochasticcontrolframeworkwithdelay.Thefinancialmarketisassumedtobeeitherinanormalstate(crash-free)orinacrashstate.InthenormalstatethepricesofriskyassetsbehaveasgeometricBrownianmotion,andinthecrashstatethepricesofriskyassetssuddenlydropbyacertainrelativeamount,whichinducestoadroppingofthetotalwealthrelativetothatofcrash-freestate.Weobtaintheordinarydifferentialequationssatisfiedbytheoptimalinvestmentstrategiesandtheoptimalvaluefunctionsunderthepowerandexponentialutilities,respectively.Finally,anumericalsimulationisprovidedtoillustratethesensitivityoftheoptimalstrategieswithrespectivetothemodelparameters.
简介:Thispaperanalyzesmanufacturers’wholesalepricedecisionsandtheevolutionarilystablestrategiesoftheretailers’marketingbehaviorinduopolysupplychains,whereeachchainconsistsofonemanufacturerandmanyretailers.Eachretailerchoosesoneoftwomarketingstrategies:socialresponsibilityornon-socialresponsibility(i.e.,afirmonlycaresaboutthebenefitsofitsshareholders).Weidentifytheconditionsunderwhichastrategyprofileisevolutionarilystable.Furthermore,weinvestigatethemanufacturers’wholesalepricesandfindthefollowing:(i)theretailer’ssocialresponsibilitydecreasestheunitwholesaleprice;(ii)whenthedegreeoftheretailer’ssocialresponsibilityismedium,thesocialresponsibilityoftheretailerinasupplychainincreasestheprofitoftheretailer’sownmanufactureranddecreasestheprofitoftherival’smanufacturer;otherwise,itdecreasestheprofitsofthetwomanufacturers;and(iii)wheneachretailerexhibitsitssocialresponsibilitymoderately,atriple-winsituationcanbeachieved.
简介:
简介:TraditionalevaluationtechniquesformutualfundsarebasedonCAPMorAPT.ProposeanewmeasurebenefitingfromValueatRiskisproposedinthispaper.WeshowhowtoapplytheVARdynamicstotheevaluationofmutualfunds.Meanwhile,weappliedtheideatothedesignofdynamicportfolioconstructionstrategies.Asfortheportfolioweightadjusting,thispaperisfocusedontheoptimaladjustingstrategieswithcosthappensandthoseonconcretetimepoints.
简介:Thepaperstudieschannelchoicedecisionsinamulti-channelsupplychainunderastrategywherethereisanex-antecommitmentmadeontheretailpricemarkup.Themarketdemandisuncertainanddependentonthepriceandsalesefforts.Theresultsshowthatinanychannelstructure,whenmakingorderdecisionstheretaileronlyexaminesthepriceratioandthefluctuationsizeofrandomdemand,ratherthanthechannelcostandtheretailer’smarketingefficiency.Whentheretailpricerises,themanufactureriswillingtoincreaseinventoryquantityfordirectsales,becausethemanufacturer’sprofitmarginishigherindirectchannel.Theincreaseindemandfluctuationonlyaffectsthedegreeofchannelpreferencebutdoesn’tchangethemanufacturer’schannelchoice.Nomatterinwhichlevelthepriceratiois,whenthesalesefficiencyofretailchannelisnothighorthedemandproportionofdirectchannelislow,themanufacturerandtheretailerwillbebothapttochooseadual-channelstructure.Thenaddingadirectchannelbecomesamarketingstrategy,ratherthanacompetitoroftheretailchannel,andhelpsthesupplychainwinmoremarketdemand.
简介:Inthispaper,regulatoryandoptimumprogrammingmodelhasbeenadopted.Consideringthecostsofemissionreduction,supervisionandpenalty,wewentallouttoanalyzetheoptimaldecisionofcostefficiencyofregulatorswhenimplementingthesethreepolicyinstruments:carbonemissionstandards,carbonemissiontradingpermissions,andcarbontaxesaswell.Itsresulthasindicated:Instrictaccordancewithcontroltargetoftotalcarbonemissions,regulatorsarewillingtorendersocialandeconomiccostabletoachievethegoalofoptimalcostefficiencybyregulatingcarbonemissionstandardsandsupervisingmarginalcostcausedbyvariationsintheprobability;fortunately,undertheconditionsoflowsupervisorycostandcertaincriteriawhichismet,theimplementationofcarbonemissiontradingpermissionscouldprovidesocialandeconomiccostwithopportunitiestorealizethatobjective;throughcomparativeanalysis,carbonemissiontradingpermissionshavetheadvantagesofhigherefficiencythancarbonemissionstandardsonthepremiseofincompleteinformation.Duringtheimplementationofcarbontaxesstrategy,whenthereexistsuncertaintyinformationintheenterprisesreductionbehaviors,theconditionwhichenterprisescanfullycomplywithisthetaxratelevelisnothigherthanmarginalpenaltyfunction;thetaxratelevelofenterprisesperfectcomplianceoughtnottobelowerthanthedivisionofmarginalpenaltycostandmarginalsupervisorycost.Theoptimalstrategyofenterprisesimperfectcomplianceisthatregulatorsvaryingthemarginalcostofemissionstandardsisequaltovaryingthatofsupervisoryprobability.
简介:基于比赛理论和主要代理人的理论,这篇论文集中于当道德的危险存在时,怎么在供应链控制产品质量和设计质量合同。我们安装了供应商,买主期望利润函数模型,供应商在使生产过程成为投资级的决定并且决定产品质量预防水平,而买主做优秀评估决定并且决定产品质量检查水平。有减少投资水平的道德的危险的供应商可以在生产过程缺乏投资;因此,买主将付信息租金到incentivize改进投资水平的供应商。买主创造夸大产品质量有缺陷者率的道德的危险,在检查的overinvest可以处理。我们使用最佳的条件解决供应商外部失败的第一最好的优秀检查水平,内部惩罚,和分配比率花费了的第一最好的投资水平,产品质量预防水平,和买主。我们也进行显示出下列的模拟测试:当供应商改进它的投资水平时,它的产品质量预防水平将增加,并且买主质量检查水平将减少。当它的期望的利润将减少时,与在买主产品质量检查水平,它的内部惩罚愿望增加,和供应商的改进,外部失败费用将也增加。因此,买主将设计一个刺激合同,哪个将增加的期望的利润,和整个供应链联合期望的利润功能可以成为反的U形状。最后,我们开发一个模拟例子并且在不对称的信息的条件下面在供应链为质量控制策略和合同设计建议建议。
简介:Socialmediaandconsumerbehaviorareincreasinglyimportantinbusinessnowadays.Asanewformofadvertising,socialmediadofacilitatetheincreaseindemandandbringachallengetomanufactures.Whileresearchersdemonstratedthatinsufficientcapacitygeneratesthelossintheprocessofsales,anoppositeconclusionhasbeenobtainedthattheprofitislargerininsufficientcapacity.Thisstudyinvestigatesthissituationofamanufacturer.Wedevelopamultiperiodmodelofinsufficientcapacityconcerningwithsocialmediaandconsumerbehavior.Ancalculationofthemodelindicatesthatagreatchangeappearsinthedemandofeachperiod.Toensurethemaximumprofit,thecapacityofeachperiodiscomputed.Andtheprofitisalmost8timeslargerthanthatwedonotconsidersocialmediaandconsumerbehavior.Wediscusstheimplicationsofourfindingsforboththeoryandpractice.
简介:Thispaperproposedtheoptimizedthree-stagestrategyoforderlymanagementoffilestreaminnetworkprintingworkflow.Infirststagethecustomerpreflightwasaddedtotheconventionalprepresspreflight,whichsetquick-type,general-type,stable-typeandcomprehensive-typepreflightschemeforcustomersbyinvestigatingthepossibilityofoccurrenceoferrorsofvariouspreflightentriesandcustomerrelevancy.Basedonfourtypesofpreflightschemes,fourcustomerpreflightapplicationswerecreatedbyusingPitstopProandConnectorYou.Customerscanselectoneoftheappropriateapplicationsforquickpreflightbeforedeliveringtoreducetheprobabilityofreturningthefilesbackforcorrectionwhenerrorsoccurinpreflight.Secondstageisprintingenterpriseprepresspreflight,whichproposedtheconceptoftheprepresspreflighttolerance.Inaddition,accordingtothedifferentrequirementsofprintingtechnologyandquality,thispaperestablishedtheprepresspreflightschemebasedontheprintingenterprises’toleranceforpreflighterror.Thirdstageistomanagetheoptimizedsortingofprepressfilestream.Toachieveit,theSPTruleandthe0-1programmingmodelwereadopted,timespendofpreflight,printingprocessandpost-pressfinishingwasalsotakenintoaccount.Moreover,EnfocusSwitchsoftwarewasappliedtoestablishautomatednetworkprintingworkflowandcompletethefilestreamsorting.Finally,theresultofsimulationanalysisoftheoptimizedstrategyshowsthattheoptimizedthree-stagestrategycaneffectivelyshortenthefileprocessingtime.
简介:Weinthispaperexaminewarrantystrategyinatwo-stagesupplychainconsistingofamanufacturerandtwocompetingretailers.Themanufacturerproducestwosubstituteproductsandmarketsthemthroughthetworetailerstoagroupofconsumers,respectively.Foreachtypeofproducts,themanufacturer’sbasewarrantyandaretailer’sextendedwarrantyarebundledwiththeproduct.Weusegametheoreticmodelstoexploretheinteractionsbetweenthetwotypesofwarrantiesandthecompetitionbetweentheretailers.Forthispurpose,twoscenariosareconsidered:noretailerandboththetworetailersprovidingtheextendedwarranties,respectively.Ineachscenario,themanufacturer’sbasewarrantiesareassumedtobeoffered.Ourresultsshowthatwhentheretailersoffertheirextendedwarranties,themanufacturerhasnoincentivetoofferthebasewarranties;otherwise,themanufacturerhastoprovidethebasewarranties.Thecompetitionbetweenretailersintermsoftheproductsubstitutabilityhasnoimpactonwarrantydecisions,butaffectsallplayers’profitsinthesupplychain.Themanufacturercanprovidealongerwarrantylengthandhighercustomerwelfaretoacustomerthantheretailersdo,ifitismoreefficientthantheretailersinwarrantycost-efficiency,andviceversa.
简介:Basedonthesystemtheory,thispaperdiscussesthestructureandefficiencyofagriculturallanduseinKaifengSuburban.Suchpresentproblemsasbenefitdeviationfromresourceallocation,distinguishedunemploymentandfourkindsofcontributionofurbanagriculturelandusearerevealed.Then,intheviewofsustainabledevelopment,someresolutionmeasurestotheproblemsareadvancedout.Thesesuggestionsincludefarmlandprotection,ecologicalagriculture,sustainablelanduseandinputdecreaseofsyntheticmatter.