简介：IntroductionDuringthelasttwodecadestherehavebeenremarkabledevelopmentsinEnglishlanguageteachinginChina.Withanever-increasingemphasisbeingputonthecommunicativecompetenceofthelearners,variousmethodsandtechniqueshavebeentriedtoimprovethestudents’abilitytocommunicateinEnglish.ThisarticlelooksatthevalueofusingWesternfeaturefilmstohelpstudentsdevelopthiscommunicativecompetence.

简介：

简介：

简介：1IntroductionandPreliminariesItiswellknownthatthesmallestsingularvalueofamatrixisimportantinmatrixthoeryandapplications.VarahandQi,Johnsongavesomeresultsonlowerboundofthesmallestsingularvalue[1—4].Here,weusetheblockpartitionedformofamatrixtoob-taingeneralizedlowerboundsforσn（A）.Furthermore,byscalingwithamatrixDweob-tainanewlowerboundforσAofmatriceswhicharenotpositivedefinitematrices.

简介：Theexistenceanduniquenessresultsaboutquasilinearperiodicboundaryvalueproblemsareestablishedbyusingtheglobalinversefunctiontheoremandtheresultabouttheexistenceanduniquencessofperiodicsolutionsfortheperiodicboundaryvalueproblemofnonhomogeneouslinearperiodicsystem.

简介：

简介：Thesingularlyperturbednonlinearboundaryvalueproblemsareconsidered.Usingthestretchedvariableandthemethodofboundarylayercorrection,theformalasymptoticexpansionofsolutionisobtained.Andthentheuniformvalidityofsolutionisprovedbyusingthedifferentialinequalities.

简介：

简介：Contrastwithartificialenvironment,themulti-levelself-organizationalsystemofnaturehasgreatgain.Sustain-ablematerialenvironmentshouldrespectnature:non-rubbishandsuper-cyclequalityofnaturalecosystemoffersthematerialsourceofhumandevelopment,fractalstructureofnatureoffersnewfieldofspaceandinformationsourcetothishigh-densityandinformation-basedsociety,dissipativestructureofnaturelinksthenewsystemofenergywithwholeecosystemorgani-cally,andlife-chainregulationisthebaseofsustainablelifeenvironment.Natureguaranteesthephysicalhealthyenviron-mentbyitsall-dimensionhealthyfactor,constructsthementalhealthyenvironmentbyitsqualityofco-ordinateandchaos,sothatguaranteesthewholeemergenceofsustainabledevelop-mentonthe'super-science'level.Intheviewofsustainabledevelopment,construction,greeneconomyandhumanhealtharebasicfields.Withtheconceptofecosystemregulation,wecanrelatethesefieldsorganicallyandfulfillthetaskofhumanhealth,welfareandsustainabledevelopment.Ecosystemregulationisthebaseofsustainabledevelopment'snewpara-digm.

简介：基于处理15Mt/a的综合精制/化学植物粗略、生产在“从事由任何适当工具精制，石蜡和aromatics最大化综合精制/化学植物的全面价值”的指南下面的乙烯的1.0Mt/a，专注于是必要的研究为在精炼厂和乙烯植物之间的材料的相互的供应的流动图和答案。在分析产品的化工物品板岩，作文和性质以后，优化综合精制/化学工厂以便减少投资和操作费用认识到综合工厂的价值的最大化被建议。

简介：

简介：

简介：

简介：§1.IntroductionItisveryimportanttostudythetheoryofthemultidimensionalhyperbolicconservationlaws.Atypicalmodelisthefollowinginitialvalueproblem

简介：

简介：

简介：Thispaperisasummarizationonevaluationofvalueofartificialforest.Themaincontentsinclude:(i)thedifferenceinconceptsbetweenecologicalfunction,ecologicalefficiencyandecologicalbenefitsofartificialforest;(ii)themotiveandseveraltachesofeconomicfeedbackorcompensationforecologicalbenefit;(iii)theecologicalefficienciesofartificialforestandthemaincorrelativefactorswhichincludestheecologicalefficienciesofartificialforestandthemaincorrelationfactorsinfectingtheecologicalefficiency;(iv)thebasicmathcorrelationsbetweenecologicalefficienciesofartificialforestandtherelatedfactors;(v)servicerangeoftheecologicalefficienciesofartificialforest;and(vi)thebasicprincipleofmeasurementofecologicalefficienciesofartificialforest.Attheend,thebasicmethodsofmainecologicalefficienciesofartificialforestareexpatiated.

简介：TalliesissuedbyfeudalrulerstotheirgeneralsandofficialswereknownasYig-tshang.Chineseclassics,suchastheGeneralCodeandNewTangAnnals,havedescriptionsonthequalityandvaryingimportanceofthesetallies.AccordingtoOldTangAnnals:TheSouth,theTangDynastyhadagoodunderstandingofthesystemrelatedtotheissuanceoftalliesnotonlytoTuboofficials,butalsotoTuboenvoys.AclassicrecordedthemajorcontentsofatallyissuedtoTuboenvoychargedwithgreetingTangDynastyPrincessJincheng.

简介：

简介：摘要：By integrating a variety of educational functions, the design of compound educational space promotes the all-round development of students, strengthens practical teaching.The design and practice value of compound educational space can be summarized into three levels: optimizing the allocation of educational resources at the macro level, improving the quality of educational space construction at the meso l evel, and promoting the individualized and all-round development of students at the micro level.