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  • 简介:Editor'snote:Thepaperwasquotedfromthepaperscollectionofthe'19thInternationalWorkshoponRare

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  • 简介:DemandforTechnologyintheDevelopmentoSocialForestryTXDemandforTechnologyintheDevelopmentofSocialForestryByGuoZhengmo1.Demandfor...

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  • 简介:Whenpeopleadviseyourchildrento“getaneducation”,ifyouwanttoraiseyourpayment,theytellyouonlyhalfthetruth.Whattheyreallymeanistogetjustenougheducationtogivemanpower(人力)foryoursociety,butnotsomuchthatyouproveadifficultytoyoursociety.

  • 标签: 高中 英语 专项练习 参考答案 阅读理解题
  • 简介:这份报纸为在无线通讯工业手机卡片计划的需求评价和分类提供一条有效、有用的途径。我们使用最大的可能性的评价基于历史的出售数据估计主要需求和每张手机卡片的替换概率。这个评价模型是非线性的,因此我们转变它到一个混合整数由对数的转变和piecewise的线性编程模型线性近似。根据评价结果,我们能做分类计划。考虑到手机卡片的资源是有限的,我们联合优化手机卡片计划的分类和数量。在数字学习,我们在中国把我们的途径用于一个大活动服务供应商并且发现我们的途径能增加这个活动服务供应商的收入23.69%。敏感分析证明活动服务供应商应该提供更多的分类当能被分到每家店的手机卡片的类型是有限的时,增加收入。

  • 标签: 最大似然估计 无线通信行业 分类规划 整数线性规划模型 服务提供商 手机卡
  • 简介:Indeed,deficit-spendingofmassiveamountsonpublic-works,loweringinter-estratesandpromotingexportsarethecommonphenomenonseenintoday’spost-crisisAsia.Butnoneofthemissustainable,norasubstitutefortheagonizingre-form,industrialrestructuringandsci-techinnovations.Thebasisforlong-terme-

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  • 简介:Basedonthedatafrom2002to2010,thepaperanalyzedthesituationoftimbersupplyanddemandinChina,andconcludedthatsupply-demandcouldbebalancedbasicallyiftakingaccountingoftimberimport.BasedonthedatafromtheSeventhNationalForestryInventory,thepotentialofprovidingtimberfromnaturalforestandplantationwasanalyzed.ThepaperalsoforecastedthefuturefeaturesandtrendoftimbersupplyanddemandinChina.Intheend,strategicmeasuresandtechnologicalandpolicygua...

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  • 简介:为了解决用户体验中的“过度包装”问题,亚马逊引进一款新纸箱制造机。它不仅可以根据货品大小的容量来制定纸箱的最小尺寸,还可以开启自己的生产线进行匹配生产。虽然这个项目暂时处在试验阶段,但其可为公司节省40%的成本。这就意味着如果试验项目顺利的话,对原有纸箱市场的供应链条将会带来巨大的冲击。

  • 标签: 亚马逊 On 纸箱市场 试验项目 过度包装 用户体验
  • 简介:Inthispaper,thejointproductionandrecyclingproblemisinvestigatedforahybridmanufacturingandremanufacturingsystemwherebrand-newproductsareproducedinthemanufacturingplantandrecycledproductsareremanufacturedintoas-newproductsintheremanufacturingfacility.Boththebrand-newproductsandremanufacturedproductsareusedtosatisfycustomerdemands.Returnsofusedproductsthatarerecycledfromcustomersareassumedtobestochasticandnonlinearlyprice-dependent.Amathematicalmodelisproposedtomaximizetheoverallprofitofthesystemthroughsimultaneouslyoptimizingtheproductionandrecyclingdecisions,subjecttotwocapacityconstraints?themanufacturingcapacityandtheremanufacturingcapacity.BasedonLagrangianrelaxationmethod,subgradientalgorithmandheuristicalgorithm,asolutionapproachisdevelopedtosolvetheproblem.Arepresentativeexampleispresentedtoillustratethesystem,andmanagerialanalysisindicatesthattheuncertaintiesindemandandreturnhavemuchinfluenceontheproductionandrecyclingpolicy.Inaddition,twentyrandomlyproducedexamplesaresolved,andcomputationalresultsshowthatthesolutionapproachcanobtainverygoodsolutionsforallexamplesinreasonabletime.

  • 标签: 协调生产 随机和 回收 求和 再制造系统 拉格朗日松弛法
  • 简介:TheChinaElectricityCouncilpublishedthereportontheanalysisofpowersupplyanddemandsituationacrossthecountryin2011recently.Accordingtothereportitisforecastedthatin2011,China'seconomywillkeepsteadyandfastgrowth,andpowerdemandwillcontinuetoincrease.Theelectricityconsumptionofthewholesocietyacrossthecountrywillreachabout4700TWhwithayear-on-yeargrowthofabout12%,whichwillslowdowntosomeextentascomparedwith2010.Withtheimplementationofindustrialdevelopment,energy-savingmeasuresandtariffpolicies,thegrowthandstructureofelectricityconsumptionwillbegreatlyimproved.

  • 标签: 中国电力企业联合会 电力需求预测 电力供应
  • 简介:AfterseveraldecadesofdevelopmenttheprocessingcapacityofChineserefinerieshasreached276milliontonsperyear,rankingthefourthintheworld.TherefiningindustryhasmadegreatcontributiontothegrowthofnationaleconomyinChina.Withchangingtimes,especiallyafterChina'saccessiontotheWTO,significantchangeshaveoccurredineconomy,politicsandpetroleummarketbothathomeandabroad.ThesurvivalandgrowthofChineserefinerieshasfacednewchallenges.

  • 标签: 炼油厂 处理能力 生产量 中国 天然气 工业发展
  • 简介:ToanalyzetheproductionandmarketingofChinaautomobileinYear2009,andalsothedevelopmentofChinaautomobileandsteelcordinthose11years.Thesingle-elementregressionmathematicsmodelwassetuptoanalyzethesteelcorddemandandautomobileproduction.Itpredictedthatautomobileproductionwouldupto15170000,16690000and18360000respectivelyfrom2010to2012,withtheconfidenceasof95%,thesteelcordconsumptioninthosethreeyearswillbe1180000-1370000t,1320000-1520000tand1470000-1680000t.AstothepolicyofChinastimulation,TheroleofChinesetirehasconvertedfromtheexport-orientedtodomesticconsumersmoothly,sotheeffectofUSspecialprotectionisttariffsislimitedinChina.

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  • 简介:Inviewoftherecognitionoftheimportanceoftheinterdependentbehaviorofstrengthandstiffnessofwalltypestructuralelements,theseismicdemandofplan-asymmetricsystemsisrevisited.Usefulstrengthdistributionstrategies,i.e.,'CenterofStrength-CenterofMass(CV-CM)coinciding'and'BalancedCenterofStrength-CenterofResistance(CVCR)'areadopted.Designchartsfortheseismicdemandofclassicaluni-directionallyandbi-directionallyasymmetricsystemsaredevelopedinasimpleunifiedformat.Aconceptualframeworkisalsooutlinedtoconvenientlyapplythedesigncharts.Illustrationsareincludedtoexplaintheuseofthecurrentrecommendationsinpracticaldesign.Thestudyalsohighlightstherelativeperformanceof'CV-CMcoinciding'and'BalancedCV-CR'criteria.

  • 标签: 需求计划 非对称结构 地震 设计图表 非对称系统 不对称系统
  • 简介:由于变化时尚趋势和一种不稳定的市场状况,以时尚和纺织品(英尺)工业要求在一短时间完全是无法预言的并且能变化并且变化,它使协调英尺供应链更困难。在产品偏爱的一个变化由于时尚趋势是英尺工业的需求比另外的工业显示出更多的变化的主要原因。在这份报纸,我们使用一个众所周知的合同,所有单位数量折扣政策(AQDP),供应协调英尺与某些需求锁住,并且我们进一步在需求变化情形下面认为它调查它是否能仍然协调供应链。在卖的季节前,详细,AQDP被制造商提供给零售商,并且在哪个下面与某个需求完成的英尺供应链协作。在卖的季节期间,需求变化在因此,制造商可以需要修订原来的AQDP保险供应的趋势锁住的时尚的一个突然的变化以后被认识到仍然被协调。利用机制设计理论,我们证明那:(i)当传统的AQDP能协调供应时,当时,锁住没有需求变化,它不能总是在需求变化以后协调供应链;(ii)当AQDP失败时,我们能使用建议使能够的线性定价政策(CLPP)完成新协作;(iii)一个更主导的决定制造者,能设置一个更高的利润目标,对在需求变化下面的供应链系统的稳定有利。数字例子也被建议显示出我们的结果。

  • 标签: 供应链协调 需求变化 纺织 时装 供应链系统 市场波动