简介:ThecontinuedfractiontacticsforcryptanalysisbasedonLegendreTheoremofcontinuedfractionareproposed.
简介:Ⅳ'Developmenttrendofphosphorsandproposals1'DevelopmenttrendofphosphorsFromthenewdevelopingtrendofphosphorsforlampsathomeandabroad,itisnecessarytoimprovetheluminescentefficiency,colorrendering,luminousfluxmaintenanceandsecondarycharacteristicsofrareearthphosphorsandkeepconsistenceofthoseproperties.Research,development,productionandapplicationofrareearthphosphorsforlampsshouldnotbelimitedtotrichromaticphosphorsbutbeex-
简介:2.CharactersofNiMHpowerbatteryandrequirementsonnegativeelectrodehydrogenstoragematerialsIncontrastwithordinarysmallNiMHbattery,NiMHpowerbatteryforautosworksinthemoreharshconditions.Hence,requirementsonthecomprehensiveperformancesofNiMHpowerbatteryarestrict.MaindifferencesbetweenNiMHpowerbatteryandordinaryNiMHbatteryinclude:
简介:ZhangXiangyang:ResponsetoProfessorGuYueguoHiEveryone.I’mpleasedtoreadProf.Gu’sprovocativeideasandGary’sresponse.I’vebeenin-volvedindistanceteachingandlearningforcertainyears,thatis,workinginXuzhouRadioandTelevi-sionUniversity.In1996,notin1997,Gumadeatonguesliphere,wewereamongthefirstTVUswhichhavebeentrialingGu’BADistanceCourse,whichwonpraisesandhatredfromtheBAstudents(theyareallteachersofEnglishinmiddleschoolsinChina,withunbearablework-load)andtutorsatTVUsinChina.Why?Herearemypoints:1.DLinChinaallgetquitewellwiththetraditionalteacher-centrededucationalcontext.Theyallknowthatsomethingwrongwithit,butfewwanttodosome-thingaboutit.2.DLinChinadonotknowhowtolearn.Theyliketowaitforthecorrectkeysandex-
简介:<正>TherelationbetweencontinuedfractionsandBerlekamp’salgorithmwasstudiedbysomereseachers.ThelatterisaniterativeprocedureproposedfordecodingBCHcodes.However,thereremainsanunansweredquestionwhethereachoftheiterativestepsinthealgorithmcanbeinterpretedintermsofcontinuedfractions.Inthispaper,wefirstintroducetheso-calledrefinedconvergentstothecontinuedfractionexpansionofabinarysequences,andthengiveathoroughanswertothequestioninthecontextofMassey’slinearfeedbackshiftregistersynthesisalgorithmwhichisequivalenttothatofBerlekamp,andatlastweprovethatthereexistsaone-to-onecorrespondencebetweenthen-threfinedconvergentsandthelengthnsegments.
简介:4.MainbusinessincomeincreasedinlistedcompaniesChineseNdFeBindustrydevelopedsteadilyinChinain2011,andmainbusinessoflistedcompaniesalsorealizedstablegrowth.Fromthe2010AnnualReportofZhongKeSanHuanHigh-TechannouncedonApril1,2011,salesincomeofthecompanyreached2.36billionyuanin2010,anincreaseof51.05%over2009;totalprofit
简介:4.GlobalmagnetindustrycentershiftedEuropewastheglobalmagnetscenterbeforeWorldWarⅡ.Afterwards,ithadshiftedtoUSA.Tilllate1960s,thecenterhadmovedtoJapan.Eventually,itmovedtoChinaatthebeginningof21stcentury.Magnetoutputindifferentcountries(2005)isshowninTable3.
简介:8.JiDaiyu,GeneralManagerofBaotouXinyuanRareEarthHi-TechMaterialsCo.LtdControlgrosstostabilizeprices.Chineserareearthispreciousstrategicresource.Themoreitisexploit,thelessitwillbe.TheStatehasputforwardrareearthpolicyof"strengthenmanagement,protectresource,developscientificallyandfaceinternational".Chineserareearth
简介:7.ChinesescientistsindependentlydevelopedthecosteffectiveLa-Fe-BserieshydrogenstoragematerialsAftermorethanfouryearsefforts,hydrogenstorageresearchteaminBaotouResearchInstituteofRareEarthshaddevelopedLa_(15)Fe_(77)B_8,La_(17)Fe_(76)B_7andLa_8Fe_(27)B_(24)serieshydrogenstoragealloys,whichhavethemultiphasestructureincludingLaNi_5phase,