简介：TheanalysisandevaluationofanactualportsystemcontainingRdifferentship’skindsandNsubsystemseachofwhichconsistsofM.(i=1,2,…,N)portsarederived.TheexternalarrivalsofshipstothesystemcomefromRdifferentPoissonsourcesandtheinterarrivalstothequeueofeachportofasubsystemaredeterminedaccordingtoconditionprobabilities.EachporthasmultipleberthswhoseservicetimesaredistributedaccordingtoErlangprobabilitydistributionfunctions.EachportofasubsystemhasRinfinitecapacitybuffersforstoringshipsinterarrived.Thismethodprovidesagoodapproximationprocedureforobtainingsystemperfor-mancemeasuressuchaswaitingtimesofships,averagequeuelengths,etc.Optimumportcapacitycanthusbeevaluatedbyusingthisanalysis.Asimulationisalsopresentedtotestthisapproximateanalysis,andagoodagreementisobserved.Thismodelshallbeusedintheplanningofseveralactualportsystems.Throughtheapplicationofthismodel,itispossibletoanalyzeandevaluateperformancesofthesystems.

简介：Healthcareisindeedacomplexservicesystem,onerequiringthetechnobiologyapproachofsystemsengineeringtounderpinitsdevelopmentasanintegratedandadaptivesystem.Ingeneral,healthcareservicesarecarriedoutwithknowledge-intensiveagentsorcomponentswhichworktogetherasprovidersandconsumerstocreateorco-producevalue.Indeed,theengineeringdesignofahealthcaresystemmustrecognizethefactthatitisactuallyacomplexintegrationofhuman-centeredactivitiesthatisincreasinglydependentoninformationtechnologyandknowledge.Likeanyservicesystem,healthcarecanbeconsideredtobeacombinationorrecombinationofthreeessentialcomponents–people(characterizedbybehaviors,values,knowledge,etc.),processes(characterizedbycollaboration,customization,etc.)andproducts(characterizedbysoftware,hardware,infrastructures,etc.).Thus,ahealthcaresystemisanintegratedandadaptivesetofpeople,processesandproducts.Itis,inessence,asystemofsystemswhichobjectivesaretoenhanceitsefficiency(leadingtogreaterinterdependency)andeffectiveness(leadingtoimprovedhealth).Integrationoccursoverthephysical,temporal,organizationalandfunctionaldimensions,whileadaptationoccursoverthemonitoring,feedback,cyberneticandlearningdimensions.Insum,suchservicesystemsashealthcareareindeedcomplex,especiallyduetotheuncertaintiesassociatedwiththehuman-centeredaspectsofthesesystems.Moreover,thesystemcomplexitiescanonlybedealtwithmethodsthatenhancesystemintegrationandadaptation.

简介：Anonlinearage-dependentpopulationmodel,whichallowsforconsiderationoftheeffectsofcrowdingandresourcelimitation,ispresented.Thebasicpropertiesofsolution,suchasexistence,positivity,uniqueness,andultimatebehavior,arediscussed.Also,theconditionofstabilityandcontroll-abilityofthenonlinearpopulationsystemisobtained.

简介：Thecurrentstudiesonsecurityarchitectureandinformationsystemsecurityarchitecture(ISSA)aresurveyedinthispaper,andsometypesandtheirfeaturesofISSAarediscussed.Then,thestructuralelementsofISSAareanalyzed,andtheconstructingstepsforISSAareproposed.

简介：Inthepasttherewerealotofresearchesonthetopicofeconomicgrowth.Nevertheless,theenvironmenthasbeenabitabstractedbystandardeconomics.Scarcenaturalresourcesandourchoicestoprotectthemorexploitthemjointlydeterminetheeconomicandenvironmentalsystems.Inthispaperwedescribeamodelwithaparticularfocusontherelationshipamongincome,pollution,andnon-renewableresources.Wewanttocombinebotheconomicandenvironmentalsectors.Thesystemdynamicsapproachisusedinanalyzingthesecomplexrelationships.Thispapergivesaninsightintothepossibilitiesforreplacingnon-renewableresourceswithmorerenewableones.Next,wepresentthesimulationrunsofthemodelthatareconductedwiththehelpofexistingsystemdynamicsmodelingtools.Onlytherelationshipssimulatedsofarbetweenthevariablesoughttobeputunderyetmorecautiousexamination.

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简介：Inthispaper,supposingthatthereceivedsignalsattheinputareoftheformv（t）=s1[t,x1（t）]s2[t,x2（t）]+n（t）wheresiareFMsignals（i=1,2）,anovelcross-coupledphase-lockedloop（CCPLL（M））anditsmathematicalmodelareobtained.Theglobalqualitativestructuralanalysisofthemathematicalmodelofthefirst-orderloop,theacqui-sitionregionandsynchronizationregionofthefirst-orderloop,andthesynchronizationregionofthesecond-orderloopareobtained.

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简介：Thispaperputsforwardtheideathatsocialsystemisanopencomplexmacrosystemandsummarizeditseightcharacteristics.Theresearchobjectofsocialsystemisalsoanopencomplexmacro-system,thusthecomplextheoryandsystemsthinkingshouldbeappliedtoresearchratherthanthesimplicitytheory.

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简介：ThedesignofanOLAPsystemforsupportingreal-timequeriesisoneofthemajorresearchissues．Oneapproachistousedatacubes，whicharepre-computedmultidimensionalviewsofdatainthedatawarehouse．Aninitialsetofdatacubescanbederived．fromwhichtheanswertoeachfrequentlyaskedquerycanberetrieveddirectly．However，therearetwopracticalproblemsconcerningthedesignofacubebasedsystem：1)themaintenancecostofthedatacubes，and2)thequerycosttoansweraselectedsetoffrequentlyaskedqueries．MaintainingadatacuberequiresdiskstorageandCPUcomputation，Sothemaintenancecostisrelatedtothetotalsizeofthedatacubesmaterialized，andthuskeepingalldatacubesisimpractical．Thetotalsizeofcubesmaybereducedbymergingsomecubes．However，theresultinglargercubeswillincreasethequerycostofansweringsomequeries．Iftheboundsonmaintenancecostandquerycostarestrict．someofthequeriesneedtobesacrificed．Anoptimizationproblemindatacubesystemdesignhasbeendefined．Withamaintenance-costboundandaquery-costboundgivenbytheuser，itisnecessarytoopti-mizetheinitialsetofdatacubessuchthatthesystemcanansweramaximumnumberofqueriesandsatisfythebounds．ThisisanNP-completeproblem．ApproximatealgorithmsGreedyRemoving(GR)and2-GreedyMergingwithMultiplepaths(2GGM)areproposed．Experimentshavebeendoneonacensusdatabaseandtheresultsshowthatourapproachinbotheffbctiveandefficient.

简介：由于市场的快速的变化和比赛的压力，生产公司被强迫改编他们的生产方法支持顾客需要的差异和新产品开发的增加。因为生物有机体相当能够适应环境变化和刺激，启发简历的概念被认出了对适应生产合适系统控制。因此，这份报纸建议启发NeuroEndocrine的生产系统(NEIMS)的一个新奇概念。建议NEIMS控制体系结构与neuro控制和荷尔蒙规定原则基于类比。它有能力明确地包括控制点，材料，信息流动路径和逻辑操作指定生产控制计划，并且活泼地在商店地板水平处理意外骚乱的经常的出现。从控制论观点，NEIMS的控制模型由于外部环境在产品要求显示适应行为到变化并且作为内部环境生产房间失灵。最后，一个原型系统被设置了启用NEIMS模拟。

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简介：Inthispaper,thesystemandsubsystemforecastmodelsforfiringaccuracyhavebeenbuiltbymeansoftheoryofGreySystemForecast.Ithasprovidedascientificforecastingmethodformicro-errorcontrolandmacro-error-controlandimprovingthefiringaccuracy.

简介：这份报纸论述一个算法评估估计并且为在计算环境的云的一个计算机网络的准确系统可靠性。从服务(QOS)的质量观点，当掉到一个特定的状态时，计算机网络应该被维持以便它不能负担得起足够的能力满足需求。而且，传播时间应该也被担心。因此，数据能通过几被送拆散最小的路径同时弄短传播时间。在维护预算B和时间限制T下面，我们评估数据的d单位能通过多重路径从云被送给顾客的系统可靠性。二个过程集成于建议算法--为估计的系统可靠性的一个评价过程和利用branch-and-bound的一个调整过程为准确系统可靠性来临。随后，有更低的界限的估计的系统可靠性和上面的界限，和准确系统可靠性被使用递归的和计算拆散产品(RSDP)算法。

简介：Supplychainisacomplex,hierarchical,integrated,openanddynamicnetwork.Everynodeinthenetworkisanindependentbusinessunitthatunitesotherorganizationstodevelopitsvalue,thecompetitionandcooperationbetweentheseunitsarebasicimpetusofthedevelopmentandevolutionofthesupplychainsystem.Thecharacteristicsofsupplychainasacomplexadaptivesystemanditsmodelingarediscussedinthispaper,anduseanexampledemonstratingthefeasibilityofCASmodelinginsupplychainmanagementstudy.

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