简介：Theincreasingusageofmultimediaobjects,suchasRSimages,scannedphotographs,videorecordings,textsandvoiceinformation,demandsanefficientmethodtoorganizeenormousinformation(Taylor,1996).Intwoyears,thesatelliteremotesensingindustrywillprovidegeographicinformationsystem(GIS)userswithasignificantnewtooltocreatebase_mapandupdatetheirGISdatabaseswithdetailedinformation.Thistoolwillbemoreandmoreusefulwhenthesatelliteimagerywith1mspatialresolutionisused(Kevin,1996).　　Hypermediatechniqueisfrequentlyusedtodealwithdifferentmedia,andtoorganizethediverseandinnumerabledataincomputerswithverylimitedCPUspeedandmemory.ThetechniquehasbeendemonstratedtobeanefficientwayforprocessingalargeamountofRSimagedata.　　Inthispaperwepresentthehypermediadatamodel,whichisbasedonRSimageinGIS.Usingthemodelconcept,wecanhandlealargeamountofRSimagedataefficientlywithverylimitedcomputingpower.Wehavedevelopedthemodelwiththreekindsofnodes:interiornode,physicalnodeandcomplexnodetoorganizetheinfinityimage.

简介：在这篇论文，H无穷修理落后变光滑的一条新途径被使用革新分析理论开发。更光滑被诉诸扩大状态导出。然而，与以前的工作完全不同，这里的扩充状态为导出评估者被看作就一个理论数学工具。为扩充系统的Riccati方程的一个分布式的算法被介绍。评估者的计算不要求任何扩大。在新途径和以前的工作之间的compulation费用的比较被做。在这篇论文使用的主要技术是在一个不定的空格的re-organizedinnovation分析。

简介：Itisconcernedwiththeproblemofdisturbanceattenuationwithstabilityforuncertainnonlinearsystemsbyadaptiveoutputfeedback.Byapartial-stateobserverandBacksteppingtechnique,anadaptiveoutputfeedbackcontrollerwasconstructed,whichcansolvethestandardgaindisturbanceattenuationproblemwithinternalstability.

简介：这篇论文涉及在取样的大小下面在不明确的系统上过滤的柔韧的H无穷的问题，两连续骚乱；分离骚乱在系统被考虑。参数不确定性被假定变化时间围住标准。目的是设计一个asymptotically稳定的过滤器，用局部地取样的大小，它两个都保证柔韧的asymptotic稳定性；为为所有可被考虑的不确定性的过滤错误动力学的H无穷性能的规定水平。推导进程被介绍辅助系统简化；为如此的一个过滤器的存在的足够的条件被建议。在学习期间，主要结果被采用各种各样的矩阵技术表示为LMI。用Matlab软件的LMI工具箱，获得适当过滤器是很方便的。最后，一个数字例子证明方法是有效的；可行。

简介：ThispaperisconcernedwiththeH-infinitycontrolproblemforaclassofcascadeswitchednonlinearsystems.Eachswitchedsysteminthisclassiscomposedofazero-inputasymptoticallystablenonlinearpart,whichisalsoaswitchedsystem,andalinearizablepartwhichiscontrollable.ConditionsunderwhichtheH-infinitycontrolproblemissolvableunderarbitraryswitchinglawandundersomedesignedswitchinglawarederivedrespectively.Thenonlinearstatefeedbackandswitchinglawaredesigned.WeexploitthestructuralcharacteristicsoftheswitchednonlinearsystemstoconstructcommonLyapunovfunctionsforarbitraryswitchingandtofindasingleLyapunovfunctionfordesignedswitchinglaw.TheproposedmethodsdonotrelyonthesolutionsofHamilton-Jacobiinequalities.

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简介：这篇论文处理为中立延期过滤问题的柔韧的延期依赖者H无穷微分系统。产生过滤器具有Luenberger观察员类型，；它保证过滤系统遗体asymptotically稳定；满足规定H无穷表演水平。Lyapunov稳定性理论；描述符模型转变被用于系统的分析；被期望作为与存在设计方法相比最不保守。一些例子被提供表明建议设计途径的有效性。

简介：ThispaperdiscussesH-infinitystatefeedbackcontrolforanetworkedcontrolsystemwithtime-varyingdelays.Basedonthefree-weighingmatrixmethod,adelay-dependentstabilitycriterionsatisfyingaprescribedH-infinitynormboundispresentedforanNCSwithunknown,time-varyingandboundeddelays.Andthen,thecriterionistransformedintosufficientconditionsbasedonlinearmatrixinequalitiesforH-infinitycontrol.TheconditionsthusobtainedarealsousedtodesignanH-infinitystatefeedbackcontroller.ThisdesignmethodisfurtherextendedtosolvethedesignproblemofrobustH-infinitystatefeedbackcontrol.Anumericalexampledemonstratesthevalidityofthemethod.

简介：ThispaperfocusesontherobustH-infinityreliablecontrolforaclassofnonlinearneutraldelaysystemswithuncertaintiesandactuatorfailures.Wedesignastatefeedbackcontrollerintermsoflinearmatrixinequality(LMI)suchthattheplantsatisfiesrobustH-infinityperformanceforalladmissibleuncertainties,andactuatorfailuresamongaprespecifiedsubsetofactuators.Anexampleisalsogiventoillustratetheeffectivenessoftheproposedapproach.

简介：摘要目的探讨食道癌、贲门癌术后置鼻饲管进行肠内营养时，使用Infinity输注泵对减少患者肠内营养并发症，有效促进和维护完整的胃肠道结构和功能。方法将60例食道、贲门癌根治术后留置鼻饲管患者随机分为观察组及对照组，每组30例，观察组采用Infinity输注泵进行肠内营养；对照组采用传统的重力输注法，对比、观察两组患者胃肠功能恢复情况，消化道并发症及导管并发症的发生情况。结果对照组中有5例出现鼻饲管堵塞，有8例出现腹痛、腹泻，有3例术后7天无肛门排气。观察组患者腹痛、腹泻等胃肠道并发症较对照组明显减少，胃肠功能也恢复较好，无1例由于管道堵塞而影响肠内营养。

简介：TheproblemofrobustH-infinityfault-tolerantcontrolagainstsensorfailuresforaclassofuncertaindescriptorsystemsviadynamicalcompensatorsisconsidered.BasedonH-infinitytheoryindescriptorsystems,asufficientconditionfortheexistenceofdynamicalcompensatorswithH-infinityfault-tolerantfunctionisderivedandexpressionsforthegainmatricesinthecompensatorsarepresented.Thedynamicalcompensatorguaranteesthattheresultantcolsed-loopsystemisadmissible;furthermore,itmaintainscertainH-infinitynormperformanceinthenormalconditionaswellasintheeventofsensorfailuresandparameteruncertainties.Anumericalexampleshowstheeffectoftheproposedmethod.