参考文件-信号与系统_理论教学中的几种实用方法

2007M5265=SJournalofMianyangNormalUniversityAug.,2007Vo.l26No.8l:2007-03-10Te:Z(1969-),3,V,=,Z_:Y.)b5|d6+LZE焦方源(=Sv9,+2637002)K1:5信号与系统6是通信和电子类专业本科生的专业主干课程,也是本科生的许多后续专业课程(如通信原理,数字信号处理等)的重要理论基础b课程的特点是内容多a理论性强b如何在有限的学时内优质高效地完成教学任务是广大师生一个现实难题b针对5信号与系统6教学中面临的实际问题,采用理论与实例相结合的方法,着重论述提高本课程教学效率的几种实用方法b1oM:信号与系统;课程特点;教学方法ms|:G42411DSM:AcI|:1672-612x(2007)08-0034-0515|d6Y0.4n08)N.S,2005-4-25(5).MethodsApplicabletotheTheoryTeachingofSignalsandSystemsJIAOFang-yuan(ComputerCollegeofChinaWestNormalUniversity,Nanchong,Sichuan637002)Abstract:Tothecollegestudentswhospecializeincommunicationorelectronics,SignalsandSystemsisatrunkcurriculumwhichisthebasisofmanylaterprofessionalcurriculumssuchascommunicationprinciples,DSPandstc.Toomuchincontentandtooabstractintheoryturntobethedistinguishingfeaturesofthiscurriculum.Howtoperformmoreexcellentlyinteachingandlearningofthiscurriculumisapracticalproblem.Theauthorputsemphasisonexpoundingtheteachingmethodstoenhancethelearingefficiencyofthiscurriculum.Keywords:SignalsandSystems;featureofthecurriculum;teachingmethods(26:)FurtherResearchonGeneralRealPositiveDefiniteMatrixMIYong-sheng(DepartmentofChangjiangTeachersCollege,Fuling,Chongqing408003)Abstract:Positivedefinitematrixoccupiesaveryimportantpositioninmatrixtheory,andhasgreatvalueinpractice.Asthereexistaseriesofexpansionsofthesematrices,inthispaper,theconceptoftheallgeneralpos-itivedefintematrixisgiven,andsomesufficientandnecessaryconditionsoftheallgeneralpositivedefintematrixaswellasothersimplepropertiesofthistypeofmatricesarepresented.Therelevantresearchresultsofthegener-alpositivedefintematrixaregeneralizedandimproved.Keywords:positive