学科分类
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4 个结果
  • 简介:Thispaperpresentsanewapproachtosolvemixed-variableunitcommitment(UC)problemswithnon-smoothcostfunctionsbasedonageneralizedpatternsearchfilter(GPS-filter)algorithm.AGPS-filteralgorithmdoesnotrequireanyinformationaboutthegradientoftheobjectivefunctionwhilesearchingforanoptimumsolution.Atthesametime,itisavailableforsolvingmixed-variableoptimizationproblems,whichisverysuitableforUC.AnewsuitablediscreteneighborhoodstructurewithUCcharacteristicsisproposedtoimproveGPS-filterefficiently.Alotofmultipleunits'statesarefixedbeforesearch;hence,thepollingsearchofdiscretevariableisefficientforafewuncertainunits.Numericalexperimentsareincludedtodemonstratetheproposedapproach'sabilitytohandlethehighlynonlinear,discontinuous,non-smoothcostfunctionsandmixedvariablesoftheUCproblem.

  • 标签: 邻域搜索算法 机组 非凸 混合变量 成本函数 离散变量
  • 简介:Thepaperstudieschannelchoicedecisionsinamulti-channelsupplychainunderastrategywherethereisanex-antecommitmentmadeontheretailpricemarkup.Themarketdemandisuncertainanddependentonthepriceandsalesefforts.Theresultsshowthatinanychannelstructure,whenmakingorderdecisionstheretaileronlyexaminesthepriceratioandthefluctuationsizeofrandomdemand,ratherthanthechannelcostandtheretailer’smarketingefficiency.Whentheretailpricerises,themanufactureriswillingtoincreaseinventoryquantityfordirectsales,becausethemanufacturer’sprofitmarginishigherindirectchannel.Theincreaseindemandfluctuationonlyaffectsthedegreeofchannelpreferencebutdoesn’tchangethemanufacturer’schannelchoice.Nomatterinwhichlevelthepriceratiois,whenthesalesefficiencyofretailchannelisnothighorthedemandproportionofdirectchannelislow,themanufacturerandtheretailerwillbebothapttochooseadual-channelstructure.Thenaddingadirectchannelbecomesamarketingstrategy,ratherthanacompetitoroftheretailchannel,andhelpsthesupplychainwinmoremarketdemand.

  • 标签: 制造商 零售价 渠道 通道结构 定价 销售工作