简介:由使用修改印射的方法,我们发现Petviashvili方程的新准确答案。在这篇论文获得的解决方案包括Jacobian椭圆形的函数解决方案,联合Jacobian椭圆形的函数解决方案,soliton解决方案,三角形的函数解决方案。
简介:Ageometricframeworkisproposedfornonlinearmodelswithrantiomeffects,basedonamodifiedversionofthegeometricstructurepresentedbyBates&Wattes(1980).Thisgeometricframeworkisusedtostudysomeasymptoticinferenceintermsofcurvaturesfornonlinearregressionmodelswithrandomeffects.Severalpreviousresultsareextended.
简介:ItwasagreatpleasuretobeinbeautifulFlorencewithover7,000geoscientstswhohadregistered.Iwasverymuchinvolvedintwosymposiaongeoethicsandgeoeducation.Theybothwentverywell,butitwasinterestingthatthegroupswhocameweresmall.Inourdiscussionapointofagreementwasthatwemustattackthegreatglobalproblemssuchasvastmalnutritionandthefactthatmostoftheworldpopulationhasproblemswithfoodandwaterresources,notgold!,
简介:EmbrechtsandVeraverbekeinvestigatedtherenewalriskmodelandgaveatailequivalencerelationshipoftheruinprobabilities(?)(x)undertheassumptionthattheclaimsizeisheavy-tailed,whichisregardedasaclassicalresultinthecontextofextremalvaluetheory.Inthisnoteweextendthisresulttothedelayedrenewalriskmodel.
简介:Abstract.Thispaperstudiesthefiniteelementmethodforsomenonlinearhyperbolicpartialdifferentialequationswithmemoryanddamplingterms.ACrank-Nicolsonapproximationforthiskindofequationsispresented.ByusingtheellipticRitzVolterraprojection,theanalysisoftheerrorestimatesforthefiniteelementnumericalsolutionsandtheoptimalH1-normerrorestimatearedemonstrated.
简介:Inthepapertheauthorsestablishfourtheoremsontwo-independent-variableGronwall-typeinequalitiesinvolvingimproperintegralswithinfiniteintegrationlimits.Theresultsobtainedimproveandgeneralizethemainresultsprovedintherecentpaper[5]byA.Corduneanu.TwoclassesofnonlinearcontinuousfunctionsdefinedbyF.M.Dannan[6]areappliedinthisarticle.AndtheresultscanbeusedashandytoolsinthestudyofmanyVolterraintegralandintegro-differentialequationswithimproperintegralfunctionals.
简介:Ⅰ.Mediabackground'Rareearth'hasbecomeahottopicgloballysince2009.TheTimesofUKpublishedanarticleentitled'Chinatakeschargeofkeystotechnologies'future'on9thMarch2009,inwhichChinawasconsideredtohavebecomethelargestmonopolycountryonrareearthmetals'supplyandtheleadingpositionwouldmakeChinacontrolthefutureofconsumerelectronicproductsandgreentechnology.Triggeredbythearticle,moreandmoreattentionswerepaidto'Chinarareearth'bymediainsideandoutsideChina.
简介:Thesediment-hosteddisseminatedgolddepositsintheOinlingregionareofsedimentation-slight-metamorphicoriginsuperimposedbyhydrothermalreworkingatmoderate-lowtemperaturesandarewellcomparablewiththetypicalCarlingolddepositsintheUnitedStates.Inviewoftheconfusingconceptconcerningthe“sediment-hosted”and“Carlin-type”golddeposits,theauthorsproposethattheterm“sediment-hostedgolddeposit”shouldbeusedinabroadsensewhichencompassesatleastthefoursubtypes,i.e.,theCarlintype,themetamorphicfineclastictype,thehydrothermalsedimentarytypeandtheveintype.Inoterwords,the“Carlin-type”shouldnotbeusedasasynonymfor“sediment-hosted”butisrecommendedasasubtypeunderthegeneralcategoryof“sediment-hostedgolddeposits”
简介:Asanintegralcomponentofthe"OneBeltandOneRoad"strategicvision,theconstructionofthe21stCenturyMaritimeSilkRoadwillreflectthedevelopingpathofChina'smaritimegeo-economywithsignificantpolit-icalanddiplomaticimplications.Althoughtheconstructionofthenewmaritimesilkroadhasits?endogenouslogicandjustifiedconsiderations,itwillencountervariouschallengesanddifficulties.Inordertoachievethestrategicgoalofsettingupacommunity?ofcommoninterestand?destinywiththerelativecountries,the"MaritimeSilkRoad"programhastobeadvancedcautiouslywiththeprinciplesofwideconsultation,jointcontributionandsharedbenefits.
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简介:Iteratedfunctionsystems(IFS)wereintroducedbyHutchinsonin1981asanaturalgeneralizationofthewell-knownBanachcontractionprinciple.In2010,D.R.SahuandA.ChakrabortyintroducedK-IteratedFunctionSystemusingKannanmappingwhichwouldcoveralargerrangeofmappings.Inthispaper,followingHutchinson,D.R.SahuandA.Chakraborty,wepresentsomenewiteratedfunctionsystemsbyusingtheso-calledgeneralizedcontractivemappings,whichwillalsocoveralargerangeofmappings.OurpurposeistoprovetheexistenceanduniquenessofattractorsforsuchclassofiteratedfunctionsystemsbyvirtueofaBanach-likefixedpointtheoremconcerninggeneralizedcontractivemappings.