简介:FavorableConditions¥ExpertsbelieveTibetisinapositiontotaketheleadinChinaandtheworldatlargetomaintainacoordinateddevelopmentof...
简介:OntheMayissueofCREI,wereportedbrieflytheBaotouRareEarthHi-techDevelopingZone(BREIIDZ).Thefollowingarethemostfavouredcon-ditionsonecanenjoywheninvestingintheZone.1,15%taxreduction,or10%taxreductionwhentheexportvolumeofanenterpriseaccountsfor40%oraboveofitstotaloutput.2,Enterprisesinthenewdistrictoftheindustryareawillbefreefromproducttaxandincrementtaxfortwotothreeyearsandfreefromprofittaxforfive
简介:本文利用图的独立数和任意3个独立点集中距离2的点对邻域交,给出了图为Hamilton和Hamilton连通的新的充分条件
简介:Theforegoingsixresponsesmayresultineitherpeaceorconflict,whichbringaboutanotherissueininternationalrelationstheory,thatis,howtoavoidconflict,orinotherwords,whetherpeacefultransitionofpowercanbeachieved.
简介:SurfaceO3concentrationanditsprecursorshavebeenobservedatLongfengshanstation,HeilongjiangProvinceforaperiodofoneyearfromAugust13,1994toJuly30,1995.RelationshipbetweensurfaceO3andthemeteorologicalconditionsduringthisperiodisanalyzedinthisstudy.ObservationresultsshowthatdiurnalvariationofsurfaceO3followsapatternofdouble-peakswithamplitudeof27—28ppbunderfinedaysinsummerandautumn.Althoughthediurnalvariationissmall(14ppb),itisstilldetectablewhenitisovercast.DiurnalvariationofO3isirregularunderrainydays.SurfaceO3concentrationriseswhenwindspeedstartstoincreaseat0800BT(BeijingTime)from0to6ms-1inautumn,winterandsummer.RelativehighsurfaceO3concentrationisnoticedfrequentlywhenS,SSW,SWandWSWwindareencounteredatthestationduringallseasons.At0800BTand1400BTthesurfaceO3concentrationincreaseswiththeincreaseofglobalradiationaccordinglyduringfinedaysinwinter,springandautumn.DuringfinedaysaveragepeakofO3concentrationinsummeris20ppbhigherthanthatinwinterwhiletheaveragepeakofglobalradiationinsummerisalmosttwiceashighasthatinwinter.TheaveragesurfaceO3concentrationunderfinedaysinautumnatLongfengshanstationis14ppblowerincomparisontotheobservationresultsfromLin’anstationwhereLin’anisataboutthesamelongitudeandlowerlatitude,withsameenvironment,whichismainlycausedbythedifferenceofglobalradiationduetodifferentlatitudesinthesetwoareas(differenceofaveragepeakglobalradiationabout100Wm-2).
简介:Thispaperdealswithabsorbingboundaryconditionsforhyperbolicsystemsinoneandtwospacedimensions.Weprovethestrictwell-posednessoftheresultinginitialboundaryvalueproblemin1D.AfterwardsweestablishtheGKS-stabilityofthecorrespondingLax-Wendroff-typefinitedifferencescheme.Hereby,wehavetoextendtheclassicalproofs,sincethe(discretized)absorbingboundaryconditionsdonotfitthestandardformofboundaryconditionsforhyperbolicsystems.
简介:Americanslangisanon-writtenlanguageinnovationandthecrystalofhistoryandculture.Slangisanobjectiveexistencewhichisoftenusedbymanypeople,andhasbecomeanintegralcomponentofthelanguageandanimportantcommunicationtool.ThispaperelaboratesthesocioculturalconditionsofAmericanslangorigination.
简介:Underinspirationfromthestructure-preservingpropertyofsymplecticdifferenceschemesforHamiltoniansystems,twohomogenizationconditionsforarepresentativeunitcelloftheperiodicalcompositesareproposed,oneconditionistheequivalenceofstrainenergy,andtheotheristhedeformationsimilarity.Basedonthesetwohomogenizationconditions,aneigenelementmethodispresented,whichischaracteristicofstructure-preservingproperty.Itfollowsfromthefrequencycomparisonsthattheeigenelementmethodismoreaccuratethanthestiffnessaveragemethodandthecomplianceaveragemethod.
简介:
简介:Fortwotrianglestobecongruent,SAStheoremrequirestwosidesandtheincludedangleofthefirsttriangletobecongruenttothecorrespondingtwosidesandincludedangleofthesecondtriangle.Ifthecongruentanglesarenotbetweenthecorrespondingcongruentsides,thensuchtrianglescouldbedifferent.Itturnsoutthatitispossibletodescribefourcasesinwhichtrianglesarecongruenteventhoughcongruentangles.Fortwotrianglestobecongruent,SAStheoremrequirestwosidesandtheincludedangleofthefirsttriangletobecongruenttothecorrespondingtwosidesandincludedangleofthesecondtriangle.Ifthecongruentanglesarenotbetweenthecorrespondingcongruentsides,thensuchtrianglescouldbedifferent.Itturnsoutthatitispossibletodescribefourcasesinwhichtrianglesarecongruenteventhoughcongruentanglesarenotbetweenthecorrespondingcongruentsides.Suchatheoremcouldbenamed,forexample,SSAtheorem.ManytextsstatethattwotrianglescannotbeshowntobecongruentiftheconditionofSSAexists.However,theauthordescribescasesinwhichsuchtrianglescouldbeprovencongruentwiththeSSAtheorem.Animmediateconsequenceofthisnewunderstandingisthenecessityofrevisingmanyproblemsandanswersinhighschoolandcollege-leveltextsrelatedtocongruenttriangles.arenotbetweenthecorrespondingcongruentsides.Suchatheoremcouldbenamed,forexample,SSAtheorem.Animmediateconsequenceofthisnewunderstandingisthenecessityofrevisingmanyproblemsandanswersinhighschoolandcollege-leveltextsrelatedtocongruenttriangles.
简介:BernardSpolsky是国际知名的外语教育专家、语言学家,1932年生于新西兰,后移居以色列。曾在新西兰、英国、澳大利亚等国家从事中学教育工作,后在耶路撒冷的希伯来大学从事两年的英语教学。60年代曾在美国的印地安那州立大学、新墨西哥州立大学从事语言学、基础教育学和人类学等学科的教学工作。在印地安那州立大学期间,他主持语言科学研究中心的工作,并负责一项英语作为外语的教学计划。1980——2000年他一直在以色列著名的Bar-Ilan大学执教,历任英语教授、人文系主任、英语学院院长,同时他还创办了语言政策研究中心。目前,他受聘任职在华盛顿的美国国家外语中心。BernardSpolsky不仅是位资深的外语教育教学专家,同时还是一位论著颇丰的作家、撰稿人。《ConditionsforSecondLanguageLearning》是他在1989年出版的一本有关第二语言学习的条件的专著,该书荣获了当年美国现代语言协会颁发的KennethW.Mildenberger奖项,第二年被英国应用语言学协会评为“1990年佳作奖”。囿于篇幅,本刊仅从《ConditionsforSecondLanguageLearning》一书中摘选了作者对第二语言学习的条件进行阐述的纲要部分,供读者参考。
简介:TheCOMPASSexperimentatCERNisstartingdatatakinginsummer2001,TheCOMPASSoff-lineframework(CORAL)willusetheCERNConditionsDataBase(CDB)tohandletimedependentquantitieslikecalibrationconstantsanddatafromtheslowcontrolsystem.WedescribetheuseoftheCDBwithinCORALandthefullscaleperformancetestsontheCOMPASSComputingFarm(CCF),TheCDBhasbeeninterfacedtotheSCADAPVSSslowcontrolsystem.TocontinuouslytransferallthedatatotheCDBandmakethemavailabletotheusers,Wedescribethisinterface,afeasibilitystudyperformedusingmockdataandwepredicttheexpectedperformance.
简介:Samplesofpolyphenylsilsisquioxane(PPSQ)usingCaF2orMgF2asthemaincatalystshadbeenpreparedunderdifferentpolymerizationconditions.TheresultsweretreatedonanorthogonaldesignL9(34).Allweight-averagemolecularweights(MW)ofPPSQhadbeenmeasuredbygelpermeationchromatography(GPC).Effectsofpolymerizationconditionsincludingreactiontemperature,compositionofthedualcatalysts(CaF2orMgF2andDCC),mixtureofsolventsandreactiontimeonMWofPPSQhavebeendiscussed.ThequantityofthecatalystsisthemostimportantfactorthataffectsMWofPPSQ.Reactiontemperatureisthesecondimportantfactor.AppropriatepolymerizationconditionhasbeenestablishedtogetPPSQwithhighMW.
简介:FDIinMyanmarhasgrownsteadilywithmorediversifiedinvestmentsourcesandfields.ThechangesinMyanmar’sinvestmentenvironmentcausedbythereformposenewchallengesforChineseinvestors.Tohandlethem,Chinesefirmsshoulddiversifytheformsandsubjectsofinvestment,takeintoaccounttheconcernsofthepeopleofMyanmarandcomplywiththenationaldevelopmentstrategyofthecountry.