简介：<正>Theeducationhasasignificantimpactnotonlyonindividualsbutalsoonthenation.Therearetwotypesofeducation,oneisstudent-central,andtheotherkeepsawatchfuleyeonthemarks.Whichoneisbetteronearth?Thefollowingismyviewpoint.

简介：Thepaperdescribestheproposedmodelsofdiamondformationbothinmeteoritesandinkimberliteandlamproitebodies.metamorphiccomplexesandexplosive-ringstructures('astroblemes'),Thediamonddistributioninmeteorites(chondrites,ironmeteoritesandureilites)isrestrictedtotaente-kamasitephase.Thediamondgenerationhereistiedupwiththefirststageofevolutionoftheplanets,Thisstageischaracterizedbyhighpressureofhydrogen.leadingtotheformationoftheplanetenvelope,Thesecondstageofplanetevolutionbeganwiththeprogressiveimopoverishmentoftheiratmospheresinhydrogenduetoitspredominantemissionintothespaceandtoprogressivedevelopmentofoxidativeconditions.Themodelappearstohaveprovedtherelictnatureofdiamondmineraolizationinmeteorites.Diamondandotherhigh-pressureminerals(its'satellites')werecrystallizedwithoutanyexceptionintheearlyintratelluricstagesofperidotiteandeclogite-pyroxenitemagmaevolutionjustbeforethemagmaintrusionintothehigherlevelsofthemantleandcrustwherediamondisnotthermodynamicallystable,Theultramaficintrusivebodies(bearingrichrelictdiamonds)inthedaseofaplatformpaaeartobethesubstratafortheformationofkimberlite-lamproitemagmachambersasaresultofmagmaticreplacement.Themodelexplainsthepolyfacialnatureofdiamondiferouseclotgites,pyroxenitesandperidotitesanddiscussestheprocessofinheritanceoftheirdiamondmineralizationbykimberlitesandlamproites.Dimondoproductivityofmetamorthiccomplexesisoriginatedbytheinheritanceoftheirdiamondsfromtheabove-mentionedprimarydiamondiferousrocks.Largediamondiferousexplosive-ringstructureswereformedbyhigh-energyendogenicexplosionoffluidwhichcamefromtheEarth'score.Thishighenergydiffersendogenicimpactogenesisfromexplosivevolcanism.Itproceedsatveryhightemperaturetocreatediaplecticgalsses(monomineralpseudomorphs)-theproductofisochoricmelting,atthepressurehighenoughforth

简介：Twotypesofnewsubliminalchannelsareconstructedrespectivelybasedonprovablesecurepublickeycryptosystemsandidentityrecognitioninsomenetworkapplications.Researchshowsthattherearesomenewcharacteristicswhichareinfavorofcovertcommunicationinourconstructions.Itishardtomakethesubliminalchannelsfree,andthechannelshavelargecapacityandhightransmissionefficiency.Wealsopointoutthatthehardnesstomakethechannelsfreeisdisadvantageoustothewardenwhotriestothwartthecovertcommunication.

简介：-AboldinnovationwascarriedoutforthestructuraltypeofwharvesinlinewithlocalconditionsinChiwanPort,inwhichagroupofwharveswithnovelstructureshavebeenbuiltinthisportduringthepasttenyears.

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简介：Bydifferentiatingfourdifferenttypesofoutput,thepaperarguesthattheirrolesarealsodifferent.Andlearnersofdiffer-entlanguageproficiencylevelsshouldbeguidedtoproducedif-ferenttypesofoutput.Thusthepaperintroducesanewconcept,namely"optimaloutput".BlindlymakingthelearnerproduceoutputwhichisfarbeyondhiscurrentEnglishlevelwillonlydoharmtohisinterlanguagedevelopment,makingitfossilizeatanearlystage.

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简介：Theman-inducedsedimentdisasterincludesmaterialerosion,transportationandaccumula-tionbyhumanactivities.Itpossessesspecialattributeinsociologyanddisasterscience.Inaccordancewithhumanactivities,geomorphologiclocation,behaviorandparticular,theman-inducedsedimentdisastercanbedividedinto4types:thedrainagenetwork,slopeandgully,channelandplain-estu-au-coastline.Eachtypeincludeserosion,transportation,accumulation,complexityandcascading.Basedonhumanactivity,geomorphology,sedimentmechanicsandcatastrophology,theman-inducedsedimentdisasterischaracterizedasfollows:(1)acceleratingtendencywithgeographicalzoningback-ground;(2)non-ordercharactersbyblindactionwithoutspecialtechnicaltraining;(3)graduallyandsharplychangingwithhumanenvironmentvibration;and(4)complexityandnon-linearfigure,etc.Oneofthereasonsleadingtoman-inducedsedimentdisasterishumanenvironmentvibration.

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简介：Inphaseunwrapping,howtocontroltheresiduesandcut-linesiscriticaltounwrapill-statewrappedphasemapsuccessfully.Somenewconceptsinphaseunwrappingfieldareproposed.Firstly,theresiduesinthreetypes,I.e.,singularresidues,normalresiduesandvirtualresidues,areclassified,whichleadstosomerationalunwrappingpaths.Secondly,somedifferencesbetweencut-lineandcurved-lineareanalyzed.Andfinally,experimentiscarriedouttocompareournewenhancedGoldsteinalgorithmwiththeoriginalGoldsteinalgorithm.

简介：Inathree-dimensionaloff-latticemodel,themethodofShakhnovichandGutinforminimizingtheHamiltonianisappliedtothedesignofaprotein-modelchain.Theeffectofthenumberofhydrophobicandhydrophilicmonomertypesonthedesignabilityofaprotein-modelchainisinvestigated.Thesimulationresultsrevealthatthenumberofhydrophobicmonomertypesisamuchmoreimportantfactorthanthatofthepolarmonomertypesinthedesignofaprotein-modelchain.

简介：Thepropertiesandlowandmediumtem-peraturebondingmechanismsofvariedtypesofSiO2ultrafinepowderusedinceramicandrefractoryandthetemperatureatwhichSiO2ultrafinepowderbegantoreactwithAl2O3werestudied,AndinitialresearchesoneffectsofultrafinepowdersofAl2O3,SiC,3Al2o3·2SiO2,MgO·Al2O3andZrSiO4onpromotingsinteringweremade.TheresultsindicatedthatamongvarioustypesofSiO2ultrafinepowder,non-crystalsil-icaultrafinepowderwacharacterizedbyitsstructureandproperties,Itcouldyieldconsid-erablesilicagelonitssurfaceatlowtempera-ture,whichthendehydratedandformedSi-O-Sibond,therebydevelopinganettystructurethatcausedhigherbondstrengthatlowandmediumtemperaturesincethenettystructurebasicallyremperaturesincethenettystructurebasicallyreainedastermperturerising.SiO2ultrafinepowderbegantoreactwithAl2O3at700℃,Allofothertypesofultrafinepowderhadeffectsonstimulatingsintering,buttheeffectsweresignificantonlywhentheparticlesizeofultrafinepowderwaslessthan5μm。

简介：Rabbitlimbalcornealepithelialcells,cornealendothelialcellsandkeratocyteswereculturedonamnioticmembrane.Phasecontrastmicroscopeexaminationwasperformeddaily.Histologicalandscanelectronmicroscopicexaminationswerecarriedouttoobservethegrowth,arrangementandadhesionofcultivatedcells.Resultsshowedthatthreecornealcelltypesseededonamnioticmembranegrewwellandhadnormalcellmorphology.Culturedcellsattachedfirmlyonthesurfaceofamnioticmembrane.Cornealepithelialcellsshowedsingularlayerorstratification.Cellboundarieswereformedandtightlyopposed.Cornealendothelialcellsshowedcobblestoneorpolygonalmorphologiccharacteristicsthatappeareduniforminsize.Thecellulararrangementwascompact.Keratocyteselongatedandshowedtriangleordendriticmorphologywithmanyintercellularjointswhichcouldformnetworks.Inconclusion,amnioticmembranehasgoodscaffoldproperty,diffusioneffectandcompatibilitywithcornealcells.Thebasementmembranesideofamnioticmembranefacilitatedthegrowthofcornealepithelialcellsandendothelialcellsandcelljunctionsweretightlydeveloped.Thespongylayerofamnioticmembranefacilitatedthegrowthofkeratocytesandintercellularjointswererich.Amnioticmembraneisanidealbiomaterialforlayeringtissueengineeredcornea.

简介：Inthispaper,theoptimalmaintenancepolicyisinvestigatedforasystemwithstochasticleadtimeandtwotypesoffailures.Thesystemhastwotypesoffailures,onetypeisrepairable,whentherepairablefailureoccurs,thesystemwillberepairedbyrepairman,andthesystemafterrepairisnot“asgoodasnew".Theothertypeoffailureisunrepairable,andwhentheunrepairablefailureoccursthesystemmustbereplacedbyanewandidenticalone.Thesparesystemforreplacementisavailableonlybyorder,andtheleadtimefordeliveringthesparesystemisstochastic.Thesuccessivesurvivaltimesofthesystemformastochasticallydecreasinggeometricprocess,theconsecutiverepairtimesafterfailuresofthesystemformarenewalprocess.Byusingtherenewalprocesstheoryandgeometricprocesstheory,theexplicitexpressionofthelong-runaveragecostperunittimeunderorderingpolicy(N-1)isderived,andthecorrespondingoptimalcanbefoundanalytically.Finally,thenumericalanalysesaregiven.

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简介：VarioustypesofgeologicalhazardsexistintheSouthChinaSea.Indynamicssense,theycanbecategorizedinto5principalgenetictypesrelatedtoeffectsofhydraulicdynamics,gaseousactivity,soilmechanics,gravityandtectonism,respectively.Integratedanalysesindicatethatthegeologicalhazardsassociatedwithvolcanoes,earthquakesandfracturesaremainlydistributedintectonicallyactiveregions,whereasthoseresultingfrommudflows,landslidesanddiapirsareusuallyconcentratedintheregionofslope,thatshallowgas,highpressuregaspocketsandsoftintercalationsaremajorpotentialgeologicalhazardsintheinnershelf,andthatstronghydraulicdynamics,especiallystormtide,isoneofthemajorcausesofgeologicalhazardsinthelittoralareas.ThegeologicalhazardsthatoccurredintheSouthChinaSeaarealsocharacterizedbyperiodicity,successionand,toacertainextent,unpredictabilityinadditiontoregionalization.

简介：Translation is the transfer of meaning,A Coursebook on Translation. Beijing,Beijing University Press.

简介：Meaning is complicated. The first difficulty in the study of meaning is that the word,and Semantics is the study of meaning. So we cannot study translation without some knowledge of semantics. This paper discusses the different types of meanings in translation from the perspective of Semantics. The results of the study can help to further comprehend the original language and improve translation.,The meaning of a word is its use in the language.

简介：Chinaisamongthefewcountriesrichinpytophyllite.ItisinferioronlytoJapanandSouthKoreainprovedorerescrvesandranksthirdintheworldinperspectivereservesPyrophylliteoccurrencesinSupportcdbytheNaturalScienccFoundationofHunanProvinceandthcDirectorFoundationofChangshaInstituteofoeotectoniCS,ACademiaSinica.Chin

简介：在深黄土土壤存储的水是在黄土高原的半干旱的区域调整植被生长的最重要的资源之一，但是种灌木和森林经常破坏自然的水周期并且接着影响植物生长。这研究的目的是在土壤潮湿和它的内部年度的变化上检验主要植被类型的效果。在六植被的010m深度的土壤潮湿打字，即，庄稼，草，锦鸡儿属植物的种的灌木，侧柏的种的森林，松和松和侧柏的混合在2001，2005和2006被测量。在农田的大约03m和另外的植被类型的大约02m的土壤潮湿内部每年在年度降水上改变了依赖者，但是在这些深度下面内部每年是稳定的。在02m，农田的土壤潮湿比所有另外的植被类型的那些显著地大，并且在另外的植被类型之中没有重要差别。在210m，农田和草地之间没有重要潮湿差别，但是在他们俩下面的土壤潮湿比种的灌木和森林的那些显著地高。种的灌木和森林弄空在2m到或近永久的枯萎点下面的土壤潮湿，并且在森林类型之中没有重要潮湿差别。锦鸡儿属植物灌木的土壤潮湿是比森林的那些显著地低的，但是绝对差别是很小的。这研究的结果含有种的灌木和森林深弄空土壤潮湿到他们能提取到的最低限制并且他们为蒸发主要靠现在的年降水生活了。