学科分类
/ 2
35 个结果
  • 简介:

  • 标签:
  • 简介:聆听光碟,留意图画及相关英文生字的读音。试在框框中圈出这些生字,并用余下的字母组成一句英文句子。把它写在本页的底部。(提示:字母的排列可以是横的、直的或者斜的)

  • 标签: 小学 英语 课外阅读 阅读材料
  • 简介:在他人处于困境时,一个小小的善意举动会带去无穷的力量,你也会从中获得无尽的快乐……

  • 标签: 高中 英语 注释读物 阅读欣赏
  • 简介:China'snewCompanyLawallowsdomesticfirmstheliberties-andtoughercorporategovernancestandards-longgrantedforeigninvestorsinChina.THERE'Sbeenplentyofexpectationandballyhooaboutit,butcouldChina'snewCompanyLawmakedoingbusinessinChinaeasier?Technically,yes.Thelong-awaitednewlaw,whichcameintoforceinJanuarythisyear,bringstreatment

  • 标签: 中国 投资环境 商业经济 投资者
  • 简介:WhenthesundispersesitsbrilliantraysoverthePotalaPalaceonaniceday,thewholecityofLhasatakesonanairofwarmthandharmony.IntheirancientTibetanrobesidlyturningtheirManiwheels,elderlypeopleeithergoforawalkontheBarkorStreetorhavearestatasweetteashop.Touristscominginfromallovertheworldoftenliketo

  • 标签: BRILLIANT SWEET HARMONY ancient Tibetan FLAVOR
  • 简介:Thispaperconsidersaschedulingproblemintwo-stagehybridflowshop,wherethefirststageconsistsoftwomachinesformedanopenshopandtheotherstagehasonlyonemachine.Theobjectiveistominimizethemakespan,i.e.,themaximumcompletiontimeofalljobs.WefirstshowtheproblemisNP-hardinthestrongsense,thenwepresenttwoheuristicstosolvetheproblem.Computationalexperimentsshowthatthecombinedalgorithmofthetwoheuristicsperformswellonrandomlygeneratedprobleminstances.

  • 标签: 最大完工时间 车间调度问题 最小化 流水 混合 NP-HARD
  • 简介:

  • 标签:
  • 简介:Ajobshopschedulingproblemwithacombinationprocessingincomplexproductionenvironmentisproposed.Basedonthedefiningof'non-elasticcombinationprocessingrelativity'and'virtualprocess',theproblemcanbesimplifiedandtransformedtoatraditionalone.Onthebasisofthedispatchingrulesselectengineandconsideredfactorsofcomplexproductionenvironment,aheuristicmethodisdesigned.ThealgorithmhasbeenappliedtoamouldenterpriseinShenzhenforhalfayear.Thepracticeshowedthatbyusingthemethodsuggestedthenumberofdelayedorderswasdecreasedabout20%andtheproductivitywasincreasedby10to20%.

  • 标签: 作业车间调度问题 启发式算法 联合处理 SHOP JOB 生产环境
  • 简介:ThispaperpresentsafurtherimprovedProductionActivityControlArchitecturetodealwiththecomplexityofinformationbycreatingSub-ProducersandSub-MoverswhichwillnotonlygiveabettercontrolatworkstationlevelbutalsoreduceloadontheDispatcher.ItalsomakesananalysisofthebasicandimprovedPAC(ProductionActivityControl)ArchitectureintheControlSystemforIntegratedManufacturing.ThePACArchitectureandtheimprovementwillfurtherenhancetheflexibilityandadaptabilityofthearchitectureintheeverchangingenvironmentoftheShopFloorControl(SFC)Systems.

  • 标签: MANUFACTURING system SHOP FLOOR CONTROL PRODUCTION
  • 简介:Job-Shop是离散事件系统中典型的调度问题,通过计算机仿真能够动态地展现Job-Shop车间的状态,分析在不同调度方法下的系统性能,并运用知识和经验去选择合适的调度方法,从而改善调度性能。本文构造了Job-Shop的离散事件仿真模型,设计了基于事件驱动的仿真策略,并讨论了优先调度准则,为解决这一问题提供了一种现实可行的思路与方法。

  • 标签: JOB-SHOP 作业调度 离散事件系统 计算机仿真
  • 简介:5-7-9(a clothing shop,7-11(a convenient shop),such shop names as Lao Yu Tou (a restaurant

  • 标签: