简介:Thispaperinvestigatesthepositiverealcontrolproblemforuncertaindescriptorsystems.Theparametricuncertaintyisassumedtobenormbounded.Firstly,forthenominalsystem,anewpositiverealcharacterizationisgiven,whichisexpressedbyastrictlinearmatrixinequality(LMI)withoutequalityconstraints.Secondly,fortheuncertainsystem,necessaryandsufficientconditionsforthesolvabilityofthepositiverealcontrolproblemarederived.Basedontheseconditioosastatefeedbacklawisobtained,whichrenderstheresultantclosed-loopsystemrobustlypositivereal.
简介:从房地产投资,real estate investing can be a, 亚洲人对房地产投资情有独钟
简介:LetQbetherealquaternionfield.LetthesetofallmatricesA=(αij)n×mbeQn×mwhereαij∈Q,A+betheconjugatetransposeofA.Overalongperiodoftime,therehavebeenvariouskindsofdefinitionsofdeterminantovertherealquaternionfield,butallofthemarenotconcerningtheentriesofthematrixdirectly,thatis"undirectly".Fromthepointofviewhowthetheoryofdetermi-nantisalgebraicallydevelopedforskewfield,itmaybeworthwhiledefineddeterminant
简介:China’sboomingrealestatebusiness,afterafewyears’development,hasfinallyestablishedapreliminarystandard.TheProceduresofthePeople’sRepublicofChinaonUrbanRealEstaterecentlypromulgatedbytheChinesegovernmentwillgointoeffectin1995.Hereafter,theStatewillenforceasystemoflandusethroughcompensationandforalimitedperiodaccordingtothe
简介:TheInternationalConferenceofPowerandEnergy,ChinaunderthesponsorshipofChineseSocietyofElectricalEngineering,andco-sponsorshipoftheChineseSocietyofPowerEngineering,ChinaEnergyResearchSociety,EastWestCenter(USA)andMcGraw-HillPublishingCompany(USA),wasdulyheldfromOct.22toOct.26,!990.Over100expertsandschol-arsfromUSA,USSR,France,Austria,Japan,Germany,UK,Poland,Czechoslovakia,Finland,Hungary,Switzerland,Norway,Italyand