简介:一个exhaust热恢复生成器被建议与使周期凉下来改进系统精力效率的常规烧瓦斯的三倍效果的LiBr/water吸收综合。作为案例研究,新奇周期的模拟在从0~3.5%的各种各样的热恢复发电机蒸汽生产比率下面基于有使1150kW的能力凉下来的有希望的平行流动被执行。节省经济分析,年度煤气的保存与箱方法为被估计的生命周期,被采用证明额外的开销的有价值。结果证明保存收入的最佳气体与42kW在2.8%热恢复生成器蒸汽生产比率被获得用尽恢复的热,和系统精力效率从1.78~1.83被改进。exchanger的起始的投资能在7年和煤气的节省的9000CNY以内被归还收入将在机器的15年的生命周期上被完成。这种技术能容易被实现并且介绍理想的经济效果,它对三倍效果的吸收周期的发展可行。
简介:Anovelfrequencyhopping(FH)sequencesgeneratorbasedonadvancedencryptionstandard(AES)iteratedblockcipherisproposedforFHcommunicationsystems.TheanalysisshowsthattheFHsequencesbasedonAESalgorithmhavegoodperformanceinuniformity,correlation,complexityandsecurity.Ahigh-speed,low-powerandlow-costASICofFHsequencesgeneratorisimplementedbyoptimizingthestructureofS-BoxandMixColumnsofAESalgorithm,proposingahierarchicalpowermanagementstrategy,andapplying...
简介:在角落分离/货摊控制上在endwall依附的旋涡发电机喷气(VGJ)的效果被数字模拟在高拐弯处的线性压缩机串联调查。结果证明角落分离能显著地被减少,它象一个更一致的出口流动角度和全部的压力侧面一样导致一个更宽的操作范围。在近货摊的操作点,全部的压力损失的最大的相对减小直到32.5%,,而喷气团比率是不到0.4%,。基于详细流动结构的分析,endwall十字流动和角落分离上的VGJ的三主要效果被识别。一个人是增加正切的速度部件相反的穿过流动,因此禁止endwall喷气出口附近的第二等的流动。第二是作为一个空气篱笆压制经过旋涡的pitchwise延期。第三是在起来洗的方面上向主流打扫低精力液体并且把主流的液体搬运到endwall到重新给与能量down-washed方面上的边界层。
简介:Thewatersupplyanddrainagesystemisverycruciiilforfulfillinglhebasicneedsofhumanlife,llisalsooneoflliemostimporlantlifesupportingsvsiemsforurbanpopulations.Thetradilionalwatersupplysystemcanbeclassifiedindifferentways.Functionally,itisclassifiediiuotwosystems,i.e.,watersupplysystemandwaterdrainagesystem,whichworkseparatelyand
简介:Itisproposedthatdoublelevelprogrammingtechniquemaybeadoptedinsynthesisstrategy.Optimizationofheatexchangernetworkstructuralconfiguration(themasterproblem)maybesolvedattheupperlevel,leavingtherestoperatingconditions(theslaveproblem)beingoptimizedatthelowerlevel.Withtheuniquenessinmind,anHENsynthesisexpertsystemmaybeemployedtoaddressboththelogicalconstraintsandtheglobaloperationparameters′optimizationusingenhancedsequentialnumberoptimizationtheory.Casestudiesdemonstratethatthesynthesisstrategyproposedcaneffectivelysimplifyboththeproblem-solvingandthesynthesisprocess.Thevalidityofthestrategyrecommendedisevidencedbycasestudies′resultscompared.
简介:OnaccountofthemultiformityofMEMSdevices,itisnecessarytointegratewithsomeopticalmeasurementtechniquesformeetingstaticanddynamicunittestrequirements.Inthispaper,anautomatedMEMStestsystemisbuiltofsomecommerciallyavailablecomponentsandinstrumentsbasedonvirtualinstrumenttechnology.Thesystemisintegratedwithstroboscopicimaging,computermicro-vision,microscopicMirauphaseshiftinginterferometry,andlaserDopplervibrometer,andisusedforthemeasurementoffull-viewin-planeandout-of-planegeometricparametersandperiodicalmotionsandsinglespotout-of-planetransientmotion.Thesystemconfigurationandmeasurementmethodsareanalyzed,andsomeapplicationsofthemeasurementofin-planeandout-of-planedimensionsandmotionsweredescribed.Themeasurementaccuracyofin-planedimensionsandout-of-planedimensionalisbetterthan0.2μmand5nmrespectively.Theresolutionofmeasuringin-planeandout-of-planemotionsisbetterthan15nmand2nmrespectively.
简介:以便评估水分发系统的地震可靠性并且相应地做康复决定,估计管道损坏状态并且基于管子漏模型进行功能的分析是必要的。当地震发生了时,水分发系统不停地与漏服务。由与漏在管道的中心增加一个虚拟节点,压力驱动的分析的一条有效途径为模仿许多低相对情形被开发,并且一个水力的漏模型也被造与地震损坏执行水供应网络的水力的分析。然后,mean-first-order-second-moment方法被用来分析水分发系统的地震有用性。根据评价分析,被破坏或突现地在重漏被孤立并且修理的管子,它改进了水供应网络的能力并且将为提高系统的地震可靠性组成基础。水分发系统上的地震可靠性和康复决定分析的建议途径被表明通过案例研究有效。
简介:Thispaperdealswithanimportantsubjectofrejectingtheabnormaldataintelligentlyinthedynamicdatasystem.Basedontheprincipleofnearestneighboroffuz-zymathematics,anapproachofmathematicallyabstractingthehumanthinkingandphys-icalpracticeknowledgeisdiscussed,anewmethodofautomaticrejectionofabnormalda-taisthenproposed.Theexperimentalresultsshowthatthemethodisavailabletothepractice.
简介:圆形的电的阻抗断层摄影术(EIT)的一个直觉的2D模型有小尺寸电极的传感器基于分析功能的理论被建立。模型的Thevalidation从Laplace方程的答案用结果被证明。建议在上到到敏感的有病条件的性质的电极优化和解释,矩阵基于模型被提供,它考虑电极距离并且能通过保角的转变与任何简单连接区域被概括到传感器。图象重建算法基于模型被实现用从在TianjinUniversity开发的EIT系统收集的试验性的数据显示出模型的可行性。在有一种人的像胸的配置的模拟,电的传导性分布基于模型的保角的转变用等位的背设计(EBP)和Tikhonovregularization(TR)被重建。算法对联机图象重建基于模型合适,重建的结果在尺寸和位置两个都好。
简介:蛋白质符合构造上的水的影响被在不同的水系统模仿模型蛋白质溶解酵素的分子的动力学调查。有有六戒指的水的水模型和溶解酵素水簇系统建模的TIP3P的溶解酵素水系统被评估。另外,在溶解酵素附近的溶剂的光线的分发功能是计算的。在溶解酵素附近的水分子的分发类似于水簇的,这被发现。二面的角度的分析和溶解酵素的二硫化物契约证明溶解酵素的符合构造严重地在溶解酵素水系统与那相比在溶解酵素水簇系统被损坏。这差别能被归因于在溶解酵素和水簇之间的分子间的氢契约的更大的数字的形成。是与分析一致水簇能在溶解酵素的热变性作用的过程改变变性作用的度。
简介:Afault-tolerantspacebornemassmemoryarchitectureispresentedbasedonentirelycommercial-off-theshelfcomponents.Thehighlymodularizedandscalablememorykernelsupportsthehierarchicaldesignandiswellsuitedtoredundancystructure.Errorcorrectingcode(ECC)andperiodicalscrubbingareusedtodealwithbiterrorsinducedbysingleeventupset.For8-bitwidedevices,theparallelReedSolomon(10,8)canperformcoder/decodercalculationsinoneclockcycle,achievingadatarateofseveralGb/...
简介:Theresultsofautomaticclassificationoftheperipheralbloodleukocytecategoriesarepresented.Thisclassificationwasperformedbymeansofdigitalimageprocessingandpatternrecognitiontechniques.Inthispaper,anautomaticmicroscopecellularanalysissystemforthispurposeisgivenandasetofalgorithmsforleukocyterecognitions,whichincludesindividualcell’sdetection,scenesegmentation,featureextraction,selectionandclassifierdesign,isproposed.Asaresultofteston3000leukoeytesdigitizeddirectlyfrom21peripheralbloodsmears,92percentofthemwereclassifiedcorrectlyinthissystem.Thecategorieswerebandneutrophils,seg-mentedneutrophils,monocytes,eosinophils,basophilsandlyrnphoeytes.
简介:Inahybridsystem,thesubsystemswithdiscretedynamicsplayacentralroleinahybridsystem.Inthecourseofengineeringmachineryofclusterconstruction,thediscretecontrollawishardtoobtainbecausetheconstructionenvironmentiscomplexandthereexistmanyaffectingfactors.Inthispaper,hierarchicallyintelligentcontrol,expertcontrolandfuzzycontrolareintroducedintothediscretesubsystemsofengineeringmachineryofclusterhybridsystem,soastorebuildthehybridsystemandmakethediscretecontrollaweasilyandeffectivelyobtained.Thestructures,reasoningmechanismandarithmeticofintelligentcontrolarereplantedtodiscretedynamic,conti-nuousprocessandtheinterfaceofthehybridsystem.Thestructuresofthreetypesofintelligenthybridsystemarepresentedandthehumanexperiencessummarizedfromengineeringmachineryofclusteraretakenintoaccount.
简介:干燥冷却的联合使用(DC)系统和奉献通风(DV)到decouple为精力效率冷却和除去湿气过程的系统为象香港一样的副热带的气候被建议。在这研究,DCDV系统的使用的精力性能和冷凝作用风险被在香港在一座典型办公大楼分析它的应用程序检验。通过用实际设备性能数据和现实主义的大楼和系统特征的hour-by-hour模拟,与DCDV系统的使用,年度精力消费能被54%与常规系统比较减少,这被发现(经常的空气体积与再热系统)。关于冷凝作用风险,DC卷上的冷凝作用的出现的年度频率是35h,这被发现。另外的模拟被进行在DCDV系统的冷凝作用风险上检验不同参数的影响。保证的措施在DC上没有冷凝物卷也被讨论。
简介:Differentfromconventionalmechanicalsystemswithsingledegreeoffreedom(DOF),themainideaofthesystemofhybrid-drivenprecisionpressistocombinethemotionofaconstantspeedmotorwithaservomotorviaatwo-DOFmechanismtoprovideflexibleoutput.Inordertomakethefeasibilityclear,thispaperstudiestheoreticallythedynamiccharacteristicsofthishybrid-drivenmechanicalsystem.Firstly,thedynamicsmodelofthewholeelectromechanicalsystemissetupbycombiningdynamicequationsofDCmotorswiththoseoftwo-DOFnine-barmechanismdeducedbytheLagrange′sformula.SecondlythroughthenumericalsolutionwiththefourthRunge-Kutta,computersimulationaboutthedynamicsisdone,whichshowsthatthedesignedandoptimizedhybrid-drivenprecisionpressisfeasibleintheory.Theseprovidetheoreticalbasisforlaterexperimentalresearch.
简介:Basedontheoperationdatafromacertainwastewatertreatmentplant(WWTP)innortheastChina,themodelsofbackpropagationneuralnetwork(BPNN)andradialbasisfunctionneuralnetwork(RBFNN)havebeendesignedrespectivelyandtheabilityofconvergenceandgeneralizationhasbeenanalyzedseparately.AsforBPNN,theeffectsofnumbersoflayersandnodeshavebeenstudied;asforRBFNN,theinfluencesofthenumberofnodesandtheRBF′swidthhavebeenstudied.ItisconcludedthatBPNNhasconvergedmuchslowlyincomparisonwithRBFNN.TheconclusionthattheRBFNNissuitableformodelingactivatedsludgesystemhasbeendrawn.AnautomaticallyoptimumdesignprogramforRBFNNhasbeendeveloped,throughwhichtheRBFNNmodeloftraditionalactivatedsludgesystemhasbeenestablished.