简介:Thereisastorytellingofareligiousmasterallegedlycapableofmovingmountains.Amancametohimaskingforademonstratiom.Themastersatinfrontofamountainforamoment,thenwenttotheothersideofitanddeclaredtheendofthedemonstration.Alltheaudiencesweregreatlypuzzledandbeggedhimforanexplanation.Hesaid:“Therehasneverbeenawayofmovingmountains;whatyoucandoistogotothemountainifitdoesn'tcome”.
简介:<正>WeareconcernedwiththefollowingDirichletproblem:-△u(x)=f(x,u),x∈Ω.u∈H01(Ω).(P)wheref(x,t)∈C(Ω×R),f(x,t)/tisnondecreasingint∈RandtendstoanL∝-functionq(x)uniformlyinx∈Ωast→+∝(i.e.,f(x,t)isasymptoticallylinearintatinfinity).Inthiscase.anAmbrosetti-Rabinowitz-typecondition,thatis.forsomeθ>2.M>0,0<θF(x.s)≤f(x,s)s,forall|s|≥Mandx∈Ω,(AR)isnolongertrue,whereF(x,s)=integralfromn=0tosf(x,t)dt.Asiswellknown,(AR)isanimportanttechnicalconditioninapplyingMountainPassTheorem.Inthispaper,withoutassuming(AR)weprove,byusingavariantversionofMountainPassTheorem,thatproblem(P)hasapositivesolutionundersuitable,conditionsonf(x,t)andq(x).Ourmethodsalsoworkforthecasewheref(x,f)issuperlinearintatinfinity.i.e.,q(x)≡∞.
简介:RitualWalksAroundBenrabMountain¥//LAMCOTheNyingchiareaalongtheNyangQnRiver,anareahistoricallyknownasGongbo,wasthehnmeoftheGon...
简介:有一些18的Qinling隧道。488km在Qinling山的中间从Xi鈥檃n(山西省)位于铁路线到Ankan(四川省)。它是在中国的最长双的轨道铁路隧道并且在世界上占据第三个位置。根据设计,在调查的altimetric控制引起的垂直方向的突破错误为穿透脸的盒子被限制到18mm。因为铺平的线路在长度在120km上到达并且必须在2800m高度温习二座山,一阶的精确铺平和精确严肃测量应该在构造阶段被执行。在这份报纸,与最后的结果分析铺平途径,新技术的申请,一些经验以及办公室计算的地被介绍。由过细的计划,组织和观察,二个隧道结束点之间的垂直差别的最后的精确性仅仅是8mm,并且它提供可靠调查为这个大隧道工程的保证。最后,这垂直差别象114mm一样高与主要测量结果显然区分开来,这被指出。它意味着主要结果不是足够精确的。
简介:Ekeland’svariationalprincipleisafundamentaltheoreminnonconvesanalysis.Itsgeneralstatementisasthefollowing:Ekeland’sVariationalPrinciple'’a:.LetVbeacompletemetricspace,andF:F—*-RU{+°°}alowersemicontinuousfunction,notidentically+00andboundedfrom,below.Lets>0begiven,andapointu^VsuchthatF(u)
简介:ByWenZuowuandGanLu1.CommunityForestryandMountainEnclosureforReforestationTheterm"communityforestry"hasbeenintroducedintoChinainrecentyears.Althoughinthepasttheterm"communityforestry"wasnotused,thepracticehasalonghistoryinChina,especiallyintheruralareaofsouthernChinawhereindividualhouseholdsorcollect
简介:Glacialdepositsinlocally-glaciatedmountainregionsareoftenexpressedthroughtheirsurfaceformandthestudyofthesedepositsconstitutesamajorbranchofgeomorphology.Studiesofglacialdepositionalrecordsinmountainareashaveoftenneglectedformalstratigraphicalprocedureresultinginanadhocdevelopmentofquasi-stratigraphicalnomenclature.Here,aformalstratigraphicalprocedureisrecommended,sincethisenablesasystematicapproachtothesubdivisionofglacialdepositsinmountainregions.Moreover,suchanapproachfacilitates,insomeinstances,thedevelopmentofaformalchronostratigraphythatcanbecomparedtoregionalandglobalgeologicaltimescales.Thisisimportantinlocally-glaciatedmountainregionswhereglacialdepositsrepresentoneofthemostimportantrecordsofcoldstageenvironments.GiventhatglaciallandformsrepresentakeycomponentoftheQuaternaryrecord,maintainingaformallinkbetweengeomorphologicalandgeologicalstratigraphicalprocedureisafundamentalrequirementofaconsistentandcomparablestratigraphicalframework.
简介:Accordingtothecharacteristicsofsodarecho,aclassifiedmethodfortemperaturestratificationisgiven.ByusingsodardataobservedinYanshanMountainareainBeijing,thestatisticalcharacteristicsfortheheightofinversionlayer,thermalplume,andthedepthofmixedlayerarecompared.Finally,theappearancefrequencyforstable,unstableandneutralstratificationisanalyzed.
简介:Therearemanythrust-relatedstructuresoccurringinthePaleozoicstrataoftheNiushouMountaininthecentralpartofNingxiaHuiAutonomousRegion.Thefault-relatedfoldsarethetypicalstructuresinthisarea.Basedontheanalysisaboutthesestructuresandtheirrelationships,theprocessesbywhichthesestructuresoftheMiboshanFormationwereformedarereconstructed,andthestrataunderwentaboutthreestagesofdeformation:(1)horizontalshortening,(2)folding,and(3)thrusting.AndthefactthattheNiushouMountainistheleadingedgeofanoldthrustsheetwasproved,theNiushouMountain,theDaluoMountainandtheXiaoluoMountaintogetherconstitutethefrontpartofthisoldthrustzone,sotheNiushouMountainandtheOrdovicianstratainthecentralandsouthernpartsofNingxianowarelikelyallochthons.IntheperiodfrommiddleOrdoviciantoDevonian,theareasofthecentralandsouthernNingxiabelongedtotheback-arcforelandbasinofNorthQilianshanorogen,whichwasadjacenttothecontinentinthenorth.InthelaterpartoftheearlyPaleozoicperiod,theNiushouMountainwasformedaftertheclosureoftheback-arcforelandbasin.
简介:GREENMESSENGER──WOMEN’SMOUNTAINPRODUCTIONBRIGADEINYOUXIVILLAGEByprojectteam“WomenandSocialForestry”Womeninmountainousareaswar...
简介:ThegeneticdifferentiationofKoreanpine(Pinuskoraiensis)indifferentaltitudesinChangbaiMountainwasanalyzedbyISSRtechnique,anditwasfoundthatthelevelofgeneticdiversityofKoreanpinereducesalongwithaltitudeincreasinginChangbaiMountain.ThevariationofKoreanpineismainlyfromintra-populationandthereisapositiverelativitybetweengeneticdistanceandverticalgeographicdistanceofKoreanpineindifferentaltitudes.ThegeneticcoherenceshowsthataltitudehaslessinsulationtoKoreanpine.Therefore,itisdeducedthattheterrainformationofverticaldistributionofKoreanpineisaresultofdiffusionfromloweraltitudetohigheraltitudeinthecourseofenlargingitsadaptability.