简介：Climatesecurity,whichbearsonthedevelopmentofallcountriesandthesurvivalofmankind,hasbecomeahotissue,arousinggreatconcernandextensiveattentionfromtheinternationalcommunity,Tocurbtheincreasingaggravationof

简介：Asadevelopingcountrywithalargepopulationandafragileecologicalenvironment,Chinaisparticularlyvulnerabletotheadverseeffectsofclimatechange.BeginningwiththeRioConferenceof1992Chinahasplayedaprogressivelyenhancedroleincombatingclimatechange.Aseriesofpoliciesandmeasurestoaddressclimatechangehavebeentakenintheoverallcontextofnationalsustainabledevelopmentstrategy,makingpositivecontributionstothemitigationandadaptationtoclimatechange,among...

简介：Thispaperpresentsanovelmethodofspotaddressingandsegmentationabouttheforegroundsegmentationofmicroarrayimage.Inthispaper,aspotaddressingmethodbasedonparticleswarmoptimization(PSO),algorithmisproposedtohaveafurthersearchforthecentercoordinateandradiusofthespotwhoseregionisdeterminedbytheprojectionmethod.Then,aforegroundsegmentationmethodisputforwardtomakethespotforegroundsegmentationbasedonthecentercoordinateandradiusofthespot.Thespotaddressingandsegmentationexperimentsonsyntheticandrealmicroarrayimagesshowthattheproposedmethodiseffectiveandfeasiblefortheforegroundsegmentationofmicroarrayimage.

简介：<正>Neuralnetworkhastheabilitiesofself-studying,self-adapting,faulttoleranceandgeneralization.Buttherearesomedefaultsinitsbasicalgorithm,suchaslowconvergencespeed,localextremes,anduncertainnumberofimpliedlayerandimpliednotes.Thispaperpresentsasolutionforovercomingtheseshortagesfromtwoaspects.Oneistoadoptprinciplecomponentanalysistoselectstudysamplesandmakesomeofthemcontainsamplecharacteristicsasmanyaspossible,theotheristotrainthenetworkusingLevenberg-Marquardtbackwardpropagationalgorithm.Thisnewmethodwasprovedtobevalidandpracticableinsiteselectionofpracticalgarbagepowergenerationplants.

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简介：这份报纸发源维的分析的讨论并且在有磁力地帮助的使流体化的床上可伸缩。进程变量的基本检查，合并机械、磁性的单位，允许变量的混合集合的变换直到作为贡献帮助使液化行为的领域的效果代表表面力量的统一术语。自从新变量都是由三个基本领域产生的典型压力，这转变被称为压力变换：严肃，磁性并且液体流动。这条途径以无尺寸的组而非对古典维的分析恰当的正式代数学的操作探讨物理基础。基本的无尺寸的组称为小粒的磁性的邦德数字作为严肃并且磁场的典型压力的比率被介绍。这分析也提供描绘磁场的一套命名无尺寸的数字帮助使液化象Filippov数字，Rosensweig数字，Kwauk数字和Siegell数字那样，作为典型压力的比率发源。

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简介：Theeffectsoflinearfallingrampresetpulserelatedtoaddressingoperationinanalternatingcurrentplasmadisplaypanel(ACPDP)werestudied.Thewallchargewaveformsweremeasuredbytheelectrodebalancemethodina12-inchcoplanarACPDP.Thewallchargewaveformsshowtherelationshipbetweenthesloperatioofthefallingrampresetpulseandthewallchargesattheendofthefallingrampresetpulsewhichinfluencestheaddressingstability.Thentheeffectsofthesloperatioofthelinearfallingrampresetpulseontheaddressingvoltageandaddressing,timewereinvestigated.Theexperimentalresultsshowthattheminimumaddressingvoltageincreaseswiththeincreaseofthesloperatioofthefallingrampresetpulse,andsodoestheminimumaddressingtime.Basedontheexperimentalresults,theoptimizationoftheaddressingtimeandthesloperatioofthefallingramppulseisdiscussed.

简介：InthedigitalsynthesisofwidebandperiodicsignalsusinganArbitraryWaveformGen-erator(AWG),thefrequencyresolutionandspectralcomplexityofthesynthesizedsignalsarecom-monlylimitedbythememorycapacityandclockfrequencyoftheAWG.Thispaperproposesanovelsequentialaddressingschemeandthenpresentsseveralsequencestoimprovethefrequencyresolutionofthesynthesizedperiodicsignalswithoutchangingtheirspectralenvelopesandbasictime-domaincharacteristicsundertheconditionofafixedmemorycapacityandafixedclockfre-quency.ThemainideaoftheschemeisusingtheaddressgeneratorinanAWGtoprogramandproduceaddressestoreadfixedwaveformdatainvariableorder,andthustogeneratewaveformsofvariousperiodsandprofiles.Theschemeisappliedinsimulatingsignalscenariosformilitarycom-municationcountermeasureexperiments,andachieveshighperformance.

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简介：ThesignificantincreaseinthenumberofolderadultsinChina,coupledwithcontinuingindustrializationandurbanization,hasprofoundsocialandeconomicramifications,includingtheevolutionofmajorchallengestopublichealth,eldercareservices,policy-making,andthenation’shealthcaresystem.WhiletheunprecedentedchangesinpoliticalandeconomicstructureshaveobviouslyincreasedChina’sproductivityandrevenues,whatislesswellunderstoodishowtheyhave

简介：Non-timberforestproducts(NTFPs)canplayakeyroleinsustainableruraldevelopmentduetotheirabilitytosupportrurallivelihoodswhilecontributingtoenvironmentalobjectives,includingbiodiversityconservation.However,systematicunderstandingoftheirroleandpotentialinconservationanddevelopmentremainsweak.Studieshavepointedtoimportantknowledgegapsthatmayleadtoseriousexploitationandunsustainableuseofthenaturalresource'NTFP'inChina,suchas(1)lackofbasicknowledgeongermplasmandnon-existingorincom-pleteinventory,(2)noin-depthandlong-termmonitoringandinstitutionalarrangementstoascertainsustainableextractionlevels,(3)insufficientmarkettransparencyforcommunities,(4)incompleteknowledgeofNTFPdomesti-cationanditseffectsonproductqualityandpriceandtheconservationofwildsources,and(5)noexistingresearchonthefulllengthofthecommoditychainformajornon-timberforestproductsandthevariousactorsinthechain.ThispaperpresentsinitiativestowardbalancingpovertyreductionandbiodiversityconservationgoalsinChina'sremotemountainregionsthroughthesustainablemanagementofNTFPs.Thepotentialandchallengesoforganic,ecologicalandFairtradecertificationschemesinthecontextofsmallholderfarmersarediscussedinmoredetail.

简介：1.IntroductionWiththeincreaseinolderpopulationsworldwide1comesanincreasedhealthburdenrelatedtochronicdiseases.2–4Oneofthemostdisablingoftheseiskneeosteoarthritis（OA）,whichoccursinmillionsofolderadultswhosubsequentlylivewithjointpainandstiffness,leadingtochronicdisabilityandadiminishedqualityoflife.5,6EpidemiologicalevidenceshowsahigherprevalenceofOAinolderadultslivinginurbanandrural

简介：Weusenondegeneratefour-wavemixingtostudythespatialresolutionofphotorefractivesemi-insulatingmulatiplequantumwellsgrownbymolecularbeamepitaxy.Byoptimizingtheexperimentalconditions,wehavedemonstratedthatoursamplehasspatialresolutionupto2.5μm,whichapproachesthetheoreticallimit.Wealsoanalysethefactorsthataffectthespatialresolutionofmultiplequantumwells.

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