简介：ThispaperaddressesthesupplychainengineeringanditsapplicationinChina’sretailingindustry.Basedontheapproachesofsystemsengineering,weproposetheconceptofsupplychainengineering,whichappliestheideaofsupplychainmanagementtotheengineeringpracticesthroughtheadvancedinformationandmanagementtechnology,tointegratethesupplychainsystemandoptimizeitsoperations.WethenillustratetheapplicationofthesupplychainengineeringinChina’sretailingindustry.Insuchpractices,wedevelopedthevirtualretailingenterprisemodeandtheFROM-SCMsystem,anddesignedthesalesassistantetc.SuchtheoryandpracticesaresuccessfullyappliedinMeiyijia,whichhastransformedMeiyijiafromatraditionalretailertoamodernserviceenterprise,andtheprofitsareresultedfromtheservicefeesratherthanthetraditionalsurplusbetweenbuyingandsellingprices.NowMeiyijiahasbuiltanecosystemwiththeretailerinthecore,theheadquarterastheserviceplatform.ThesuccessofMeiyijiainrecentyearsshowstheeffectivenessofthesupplychainengineering.

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简介：摘要20MW级集中式风电场因容量偏小，以110kV电压等级送出，建设升压站费用折算至单位容量经济成本过高，同时也降低了110kV输电走廊及间隔使用效率。本文以某20MW级集中式风电场为例，通过对电网情况分析及相关方案比对，主要从经济性、短路计算、稳定计算、调压计算等方面验证了以35kV电压等级接入为最优方案。

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简介：网络经济是为今天在巨大的连接描绘的经济元素之中的全球关系的一个术语。在资源和活动被分享的地方，新时代的中央行为是在互相相互依赖的关系的许多层次在深网网络把一切连接到一切，市场被扩大，费用和风险被减少。网络系统包含积极、否定的反馈。许多反馈进程创造复杂系统行为。为如此的一个网络，分析网络过程(ANP)途径似乎很适当。ANP方法使系统地与各种依赖和反馈经营系统可能。动态模型试着反映变化在真实或simulatedtimeand考虑网络模型部件常常正在演变。动态模型使用州的变量，流动，和反馈进程的概念。动态网络进程(DNP)是能在联网的经济处理时间依赖者优先级的ANP的扩展。

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简介：Abankhadbetterrationitscreditifitfirstentersagraysystemofcreditinformationwhereitcannotdistinguishbetweenthelow-andhigh-riskborrowers.Asthebankkeepsalong-termrelationshipwithitsborrowersthebanklearnsabouttheborrowersthroughtime.WiththehelpoflogitmodelandBayesrule,abankcanprocesscustomer＇screditinformationandbuildabettercredittermitgives.

简介：摘要本文利用地面观测资料、NCEP再分析资料、台站观测资料等，对2018年3月19~20日福建暴雨天气成因进行分析。结果表明高空西南急流充足的水汽输送和不稳定能量，再加上锋面、低层切变的辐合上升运动为暴雨和强对流天气的发生发展提供了有利条件。冷暖空气的交汇使得层结不稳定性和垂直上升运动不断加强，进一步触发了福建南部地区飑线的出现；在降水大值区上空的对流层低层以辐合区为主，而对流层上层则以辐散区为主，这种高层辐散、低层辐合的配置形式对于上升运动的加强较为有利，同时也是降水强度增加的主要原因；在上游地区的广西南部有水汽通量的大值区存在，随着时间的推移，到了20时，福建省中南部沿海地区的水汽通量则在8~12g·s-1·cm-1之间，沿海地区整层大气可降水量在35~46mm之间，对于降水云团的生成提供了有利条件。

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：关于为在1980年代和1990年代的瓷器精力紧张的戏剧的衰落负责的主要因素有可观的争论。然而，很少详细分析被做了在20022005期间在精力紧张解释变化。在这份报纸，我们使用结构的分解分析(SDA)把精力紧张分解成五决定因素：精力输入系数，技术系数(Leontief反的系数)，由产品的最后的要求结构，由范畴的最后的要求和最后的精力消费系数。我们然后进一步分解二个系数，精力输入系数和技术系数，进结构和真实系数。实验学习在2000经常的价格从1987～2005基于energy-input-output桌子被执行。结果证明在1987和2002之间，精力输入结构在精力紧张说明大多数衰落。然而，由产品的输入结构和最后的要求结构解释在2002和2005之间的精力紧张的增加。

简介：在这份报纸，为m厚度李重量的MacWilliams类型身份在\mathbbF2+u\mathbbF2\mathbb上为线性代码枚举符{F}_2+u\mathbb{F}_2被决定。作为这身份的一个应用程序，作者在\mathbbF2m+u\mathbbF2m\mathbb上为线性代码在李重量上获得MacWilliams类型身份{F}_{2^m}+u\mathbb{F}_{2^m}。而且，作者由利用Krawtchouk多项式为m厚度李重量分布证明两重性。

简介：摘要本文利用地面观测资料、NCEP再分析资料、台站观测资料等对2017年7月19-20日出现在昆明的强降雨天气过程进行分析。结果表明对流层中低层辐合区和切变线的共同作用为强降雨天气提供了有利抬升条件，中低层辐合与高层急流的辐散抽吸作用促进了垂直上升运动的发展；在强降雨天气出现的过程中，昆明地区存在强烈的上升运动，垂直运动则提供了动力机制，上升运动为不稳定能量的释放提供了有利条件，低层辐合、高层辐散的配置时间对应着强降水天气时段；700~500hPa高度区域以西南风为主，500hPa以下属于暖时曾，400hPa处以偏北风为主，说明此时有干冷平流存在，中低层潮湿高层干冷的配置，对于强对流天气的发生发展较为有利。

简介：Reliabilityallocationproblemiscommonlytreatedusingaclosed-formexpressionrelatingthecosttoreliability.Arecentapproachhasintroducedtheuseofdiscreteintegertechniqueforun-repairablesystems.Thisresearchaddressestheallocationproblemforrepairablesystems.ItpresentsanintegerformulationforfindingtheoptimumselectionofcomponentsbasedontheintegervaluesoftheirMeanTimetoFailure(MTTF)andMeanTimetoRepair(MTTR).Theobjectiveistominimizethetotalcostunderasystemreliabilityconstraint,inadditiontootherphysicalconstraints.Although,aclosed-formexpressionrelatingthecosttoreliabilitymaynotbealinear;however,inthisresearch,theobjectivefunctionwillalwaysbelinearregardlessoftheshapeoftheequivalentcontinuousclosed-formfunction.Anexampleissolvedusingtheproposedmethodandcomparedwiththesolutionofthecontinuousclosed-formversion.Theformulationforallpossiblesystemconfigurations,componentsandsubsystemsarealsoconsidered.

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简介：Wediscussasingle-periodinventorysystemwithageneralS-shapedutilityfunctionandexponentialdemand.Itisshownthatthereexistsastate-dependentorder-up-topolicytobeoptimal.Behaviorsofoptimalpolicyareillustratedbyanumericalexample.

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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：Thispaperstudiestheoptimalconsumption-investmentstrategywithHeston’sstochasticvolatility(SV)modelunderhyperbolicabsoluteriskaversion(HARA)utilitycriterion.Thefinancialmarketiscomposedofarisk-lessassetandariskyasset,whosepriceprocessissupposedtobedrivenbyHeston’sSVmodel.TheriskypreferenceoftheindividualisassumedtosatisfyHARAutility,whichrecoverspowerutility,exponentialutilityandlogarithmutilityasspecialcases.HARAutilityisofgeneralframeworkintheutilitytheoryandisseldomstudiedintheexistingliteratures.Legendretransform-dualtechniquealongwithstochasticdynamicprogrammingprincipleispresentedtodealwithourproblemandtheclosed-formsolutiontotheoptimalconsumption-investmentstrategyissuccessfullyobtained.Finally,somespecialcasesarederivedindetail.