简介:ItisanewresearchtopictocreatearationaljudgmentmatrixusingthecognitiontheorybecauseoftheconstructionofjudgmentmatrixinAHPinvolvingthedecision-maker'scognitiveactivities.Owingtothepresenceofuncertaininformationinthedecisionprocedure,theimproperuseoftheuncertaininformationwilldoubtlesscauseweightchanges.Inthispaper,weaddafeedforwardprocesspriortoconstructingthejudgmentmatrixsothatthedecisionmakercanuseboththecertainanduncertaininformationtogettheinitialuncertainroughjudgmentmatrix,andthenconvertitintoafuzzymatrix.Consequently,itwillbebetterfordecisionmakertoobtaintheroughsetoforderequivalentclassesthroughthedecisiongraph.Accordingtothequalitativeanalysis,thedecisionmakercaneasilyconstructthefinaljudgmentmatrixinstructedbytheroughsetcreatedearlier.
简介:系统科学基于能在他们的努力在很学术的学科以内被使用探索世界的系统的一种通用语言。当前,系统科学盖住象设计的复杂适应系统,有弹性的系统或系统一样的许多不同途径。系统科学的未来扩展之一在一阶的系统科学上作为反射研究的一个新领域通过秒顺序系统科学的应用程序来。这篇文章一般来说在一阶的科学和秒顺序科学的关系上提供一个一般背景然后继续为一阶的系统科学为质量控制并且为革新为秒顺序系统科学和他们的潜力勾略一个基本轮廓。
简介:ThispaperisconcernedwithapplicationsofintegratedsemigroupstothefollowingCauchyproblem:(ACPn)xn(t)=sumfromi=0ton-1Bixi(t),xi(0)=xi,0(?)i(?)n-1whereBi(0(?)i(?)n-1)areclosedlinearoperatorsonaBanachspaceX.Auniquenesstheorem,aconditionofthesolvability,aconditionoftheexponentialwell-posedness,andsomeresultsforthespecialcasethatBn-1isboundedandD(Bn-2)(?)D(Bi)(0(?)i(?)n-3)areobtained.
简介:Thispaperdiscussesintegratedproductandproductiondatamanagementforassembly-to-orderproduction,whichischaracterizedbyalargenumberofproductandprocessvarieties.Adatastructure,calledBill-of-Materials-and-Assemblies(BOMA),isproposedforthepurposeofunifyingBOMandassemblyroutingdatainordertoaccommodateawiderangeofproductvariabilityandproductionvariations.AgenericBOMAconceptisputforwardtodealwithvarietyeffectively.AprototypesystemoftheproposedgenericBOMAisimplementedusingobject-orientedmodeling.
简介:ThispaperdealswithH∞controlofa5th-ordermodelofsynchronousgenerators.First,byusingthemethodofexactlinearization,wetransformthe5th-ordermodelintoalinearone.Thenweassignthepoleofthelinearizedmodelintheopenlefthalfplane.Finally,weapplythedesignmethodoflinearH∞controltogetastatefeedbackcontroller.
简介:Thispaperinvestigatesanoptimaldecisionprobleminasingle-period,two-stagesupplychainwithcapacityreservationcontract.Atthebeginningoftheplanninghorizon,theretailer,whofacesstochasticdemand,reservesfuturecapacityaccordingtohisforecastingofthedemand.Thesupplierthenconstructscapacity.Atthebeginningofthesellingseason,theretailerupdatesthedemandforecastingandplacesanorder.Whentheretailer'sdemandisgreaterthanthesupplier'scapacity,thesuppliercanmeettheretailer'sdemandbyoutsourcing.Weanalyzetheoptimaldecisionofeachplayerinbothcentralizedanddecentralizedsystems.Furthermore,underthecaseinwhichdemandfollowsauniformdistribution,weobtaintheclosed-formoptimalstrategiesofeachplayerforbothcentralizedanddecentralizedsystemsandconductnumericalstudiestorevealadditionalconclusions.Thenumericalstudiesshowthattheoptimalreservationcapacityfortheretailerandtheoptimalconstructingcapacityforthesupplierinthedecentralizedsystemarebothlessthantheoptimalconstructingcapacityinthecentralizedsystem.Furthermore,wealsofindthattheprofitlossduetodecentralizationalwaysexistsandincreasesinindeterminacy.
简介:在这份报纸,当买主面对二供应来源时,最佳的政策被考虑:一个人是买主在一个特定的合同时期上从订的合同供应商(说,一年)以预先同意的价格,和其它是点市场。然而,当从合同供应商订时,买主必须完成预定全部的顺序数量,或所谓的明确的全部的顺序数量承诺,在整个合同时期上。换句话说,承诺固定买主固定价格但是强迫他/她在合同时期上的全部的顺序数量。尽管点市场以顺序数量给买主更多的灵活性,它的价格是不稳定的。合同和点获得的如此的联合经常在实践被观察。在合同时期以内,有多重亚时期,在买主考察库存的各个期间,发出一份单个订单,并且使用在手上库存遇见随机的需求。因此,在各个(订)时期,买主将在当前的已知的点价格之间称(由从点市场取得)并且更低的未来价格(由当消费留下的承诺时,等待)。一条最佳的双订政策为每个时期被描绘,取决于在手上库存水平,点价格,和留下的承诺数量。在每个时期的最佳的政策也被显示独立于合同价格。通过数字研究,库存费用被表明是(1)对合同价格感觉迟钝全部的承诺数量什么时候比总数低,在合同时期上期望需求并且(2)在点价格的可变性非增加。
简介:Inthispaperamathematicalmodelofchemicalsystemsisinvestigated.WepresenttheconditionsfortheexistenceandlocalstabilityofthesteadystatesandtheperiodicsolutionoftheHopftype.Specifically,weshowbyusinganana-lyticalmethodthattheremayexisttwoorfourHopfbifurcationpointsseparatedatafinitedistancefromeachother;atthesametime,atechniqueforstudyingtheHopfbifurcationvalueisgiven.
简介:到期的日期引语并且安排是重要工具在MTO(make-to-order)环境与生产能力匹配需求。我们考虑安排在MTO环境操作的一个生产公司面对的问题的一份订单,在公司需要为顾客引用一个普通到期的日期的地方,并且同时控制顾客订单的处理时间(由分配额外的资源处理订单)以便在给定的截止时间前完成订单。目的是最小化早,缓慢,到期的日期任务和额外的资源消费的全部的费用。我们证明这个问题是NP难的,就算为控制处理时间的订单的费用重量是相同的。我们识别这个问题的几个polynomially可解决的盒子,并且开发一个分支和界限算法和三个禁忌搜索算法解决一般问题。我们然后进行计算实验评估他们以解决方案质量通常是有效的三个禁忌搜索算法和表演的性能。
简介:Wedeveloptheinterpolatedfiniteelementmethodtosolvesecond-orderhy-perbolicequations.Thestandardlinearfiniteelementsolutionisusedtogenerateanewsolutionbyquadraticinterpolationoveradjacentelements.Weprovethatthisinterpo-latedfiniteelementsolutionhassuperconvergence.Thismethodcaneasilybeappliedtogeneratingmoreaccurategradienteitherlocallyorglobally,dependingontheapplications.Thismethodisalsocompletelyvectorizableandparallelizabletotaketheadvantagesofmoderncomputerstructures.Severalnumericalexamplesarepresentedtoconfirmourtheoreticalanalysis.
简介:Basedonthestochasticmarketdemand,thispaperconsiderstheorderdecision-makingstrategiesofthesupplychainbyintroducingstatementstrategies.Consequently,thetime-variantvarianceinthedemandsofthemarketisincorporatedintothemodel.Theretailersimultaneouslydeterminesthepurchasetime(i.e.,leadtime)andorderquantity,andthemanufacturerdeterminesthestatementstrategyandthereservedprofitrate.Theresultsshowthatthenoovertimestatementstrategycaninducetheretailertoplacemoreordersinadvancebylimitingtheavailableorderquantitywithintheavailabletime.Finally,wealsoadoptnumericalexamplestosupporttheconclusionofthispaper.