简介:摘要: 基于 CMC 网络环境下的教学 是以计算机为媒介进行交流、 利用计算机和网络进行的 教学。线上一对一对外汉语教学打破了传统课堂的局限性, 满足高效、适时的需要,解决了时间和空间的局限,并且有针对性,是对外汉语在线教学未来的发展趋势。基于此,本文 基于网络环境下的 CMC,以网络教学平台为构想,进行了 实时线上一对一教学的教学设计。更具有时效性、互动性、灵活性和针对性,可以更好地因材施教,提供个性化的教学。并且对此教学设计实施之后,进行了评价与反思。
简介:BasedonageneralanalysisofGreenfunctionsinthereal-timethermalfieldtheory,wehaveproventhatthefour-pointamputatedfunctionsinanNJLmodelinthefermionbubblediagramapproximationbehavelikeusualtwo-pointfunctions.WeexpoundthethermaltransformationsofthematrixpropagatorsforascalarboundstateintheFFbasisandintheRAbasisrespectively.Theresultingphysicalcausal,advancedandretardedpropagatorsarerespectivelyidenticaltocorrespondingonesderivedintheimaginary-timeformalism,andthisshowsonceagainthecompleteequivalenceofthetwoformalismsofthermalfieldtheoryonthediscussedproblemintheNJLmodel.
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