学科分类
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20 个结果
  • 简介:Inbiosciencepapers,besidestheotherscientificmisconductissues,replicationofthemethodsectionisacommonproblembecauseduplicationisalwaysbeingdetectedinthesectionMaterialsandMethods.Weeditorsoftenreceivecommentsandqueriesfromauthorswhothinkthatitisamatterofcoursetocopytheirownpublishedmaterialsasopposedtocopyingthoseofothers.Howshouldeditorshandlesuchpaperswithsimilarcontentinthemethodsectionandhowtoguideauthorsinwritingthemethodsectionwithoutbeingaccusedofplagiarism?Whatisright?Whatiswrong?Herewestudiedanexampletoexplainthisproblem.

  • 标签: 编辑 案例 科学论文 写作方法 复制 材料
  • 简介:TheTerabyteAnalysisMachineProjectisDevelopinghardwareandsoftwaretoanalyzeTerabytescaledatasets.TheDistanceMachineframeworkprovidesfacilitiestoflexiblyinterfaceapplicationspecificindexingandpartitioningalgorthmstolargescientificdatabases.

  • 标签: 软件开发 Terabyte 图象处理
  • 简介:TheprecursoryprojectofADSprotonlinearacceleratoristhedevicetoprovideintenseprotonbeamsfortheentiretransmutationsystem,whichhasthefiguresofintensebeamandhighenergy.Asaresult,acontinuousdeflectedbeamwithacertainintensitywoulddeclinetheperformanceoftheacceleratordevicesorevenmakedamageswithin20s.Inordertopreventthiskindofproblem,anintegratemachineprotectionsystemwithfunctionsofstatemonitoringandtimelybeamcuttingisrequiredtoprotectacceleratordevices.

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  • 简介:HIRFL-CSRacceleratorfacilityhasbeenoperatingwith3ionsources,whichareLAPECR1,LECR3andSECRAL.Theseionsourcescanprovidedifferentkindsofionswithdifferentenergy.Forexample,LAPECR1mainlyprovidesH+andHe+witheextractionvoltageabove25keV,LECR3canprovidetheionbeamswithlowtomediumchargestates,includingthemetallicionswithlowmass,suchasC^4+,Ar^11+,B^3+,Mg^7+,etc.,whileSECRALaimstoproduceintenseandhighlychargedionbeams,especiallymetallicones,suchlikeKr^19+,Xe^31+,Ni^19+,Bi^31+,U^33+,andsoon.

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  • 简介:Manualacupunctureiswidelyusedforpainreliefandstresscontrol.Previousstudiesonacupuncturehaveshownitsmodulatoryeffectsonthefunctionalconnectivityassociatedwithoneorafewpreselectedbrainregions.Toinvestigatehowmanualacupuncturemodulatestheorganizationoffunctionalnetworksatawhole-brainlevel,weacupunctureatST36ofarightlegtoobtainelectroencephalograph(EEG)signals.Bycoherenceestimation,wedeterminethesynchronizationsbetweenallpairwisecombinationsofEEGchannelsinthreeacupuncturestates.Theresultingsynchronizationmatricesareconvertedintofunctionalnetworksbyapplyingathreshold,andtheclusteringcoefficientsandpathlengthsarecomputedasafunctionofthreshold.Theresultsshowthatacupuncturecanincreasefunctionalconnectionsandsynchronizationsbetweendifferentbrainareas.Forawiderangeofthresholds,theclusteringcoefficientduringacupunctureandpostacupunctureperiodishigherthanthatduringthepre-acupuncturecontrolperiod,whereasthecharacteristicpathlengthisshorter.Weprovidefurthersupportforthepresenceof'small-world'networkcharacteristicsinfunctionalnetworksbyusingacupuncture.Thesepreliminaryresultshighlightthebeneficialmodulationsoffunctionalconnectivitybymanualacupuncture,whichcouldcontributetotheunderstandingoftheeffectsofacupunctureontheentirebrain,aswellastheneurophysiologicalmechanismsunderlyingacupuncture.Moreover,theproposedmethodmaybeausefulapproachtothefurtherinvestigationofthecomplexityofpatternsofinterrelationsbetweenEEGchannels.

  • 标签: 脑电图 连接 手动 针刺 调制 脑功能
  • 简介:旋转货摊房间的结构和行为试验性地在一把斜流动扇子被澄清。扇子特定速度是1140(r/min,m3/min,m),并且在设计流动率的全部的压力上升系数是0.345。外部casing墙上的静态的压力和在转子入口和插头的全部的压力用一个高反应压力变换器被测量。测量数据被DPLA技术,和结构的使用处理,旋转货摊房间的行为被获得。作为结果,货摊房间程度为环绕并且在货摊房间内的spanwise方向和压力分布被澄清。货摊房间繁殖的细节也被显示出。关键词斜流动扇子-旋转货摊房间-不稳定的流动-DPLA技术CLC数字TH432.2

  • 标签: 对角流风扇 不稳定流 DPLA技术 流速
  • 简介:FromthecasestudyofEveningBellRingingatNanpingHill,oneoftheWestLakeCulturalLandscapesinHangzhou,China,weinvestigatedthesoundscapeofascenicareawithaprofoundculturalbackground.First,weconductedthesoundscapephysicalindexoftheareainbothwinterandspringseasonstoanalyzeitsobjectivegraphicalexpression.Second,wefocusedonpeople’sreactionstothesoundscapeinordertoobtainasubjectiveevaluationofeachcomponentinthesoundscapeandintegratedenvironment.Then,therelationshipbetweentheobjectivedataandthesubjectiveevaluationwasanalyzed.Finally,theimpactsofthenaturalenvironment,history,andculturalfactorsontheevaluationoftheJingciTemplesoundscapewerestudied.Itwasfoundthatnaturalsounds,culturalsounds,andhistoricsoundswerewidelyacclaimedinpeople’ssubjectivefeelings,whichindicatedthecloserelationshipsamonghistoricalandculturalbackground,soundscape,andnaturalenvironment.Thus,theconclusionwasmadethatsoundscapeshouldbeconsistentwiththelocalnaturalenvironmentandthehistoricalandculturalbackground.

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  • 简介:Publicparksprovidemanybenefitstothecommunityastherepresentativesofgreenarea.Theallocationofpublicplacesplaysanextremelyimportantroleinthedailylivesofinhabitantsespeciallyforrecreationalusethatcouldenhancethequalityoflifeofresidentsinthevicinity.Tounderstandparkusers'behaviorisoneofthemostimportantprerequisitesforassessingtheparticipationinpublicservicefromtheparkusers'pointofview.Thepatternofparkutilizationonlocationandactivityselectionareimportantelementsinbehavioralstudy,whilethepublicparkstopographmayalsoinfluencethetypicaluser'sbehavior.Questionnairesurveyonparkutilizationwasusedtoinvestigatetheinteractionbetweenactivityinvolvementandrecreationallocationwiththeuseoflineardiscriminantanalysis(LDA)model.Thestudyfoundthatpublicparkusers'behaviorisinfluencednotonlybysocialcharacteristicsbutalsobytherecreationalactivitiesandtheirspecificlocationcharacteristics.Wefoundthatabout45percentofparkvisitorsarelocalresidentslivingwithinaradiusof3kmpreferredtraveltoparksneartheirresidentialarea.Thisimpliesthatlocationselectionbehavioriscorrelatedwithtraveldistance,traveltimeandtravelcost.Visitfrequenciesandonsiteexpendituresreflecttherecreationbehaviorfordifferenttypeofactivities.Theoverallinformationcanbeusefullyappliedbydecisionmakerstolaunchappropriatepublicpolicyinconsistencewiththeusefulresultsofthisstudy.

  • 标签: 城市规划 公园设计 生活质量 环境评估
  • 简介:AlthoughtheimpactofroadtransportonurbanairqualityhasachievedahighprofileinChina,stillgreaterattentionisrequiredasithasnotyetbeenconsideredfullyeveninrelationtotheroadnetworklinkingcitiesandurbanareas.Strategicenvironmentalassessment(SEA)isasystematicandcomprehensiveprocessforevaluatingtheenvironmentalimpactsofapolicy,planorprograminpubliclyaccountabledecision-making.AirpollutionhasbeenrecognizedasasignificantissueinmosttransportSEApractices.TheStrategicEnvironmentalAssessmentoftheHubeiRoadNetworkPlan(2002-2020)(HRNP)wasintroducedasoneoftheWorldBank'spilotSEAprojects.Aneffectiveframeworkwasdevelopedtoinvestigatethefunctionalrelationshipbetweentheroadnetworkanditspotentialairpollutantemissions.Inthisstudy,twoindicatorswereidentified:emissionintensity/inventoryofpollutantsandthespatialdistributionofthemostpollutedareas.Becausestrategicactionsareinherentlynebulousanddataqualityisoftendisappointing,threealternativescenarioswereemployedtoaddressuncertaintiesanddata/scaleissues.Calculationsweremadeusingemissionmodelsandresultswereanalyzedwiththehelpofstatisticaltoolsandthegeographicinformationsystem(GIS).TheresultsfromtheprojectimplementationandthefeedbackfromtheWorldBankhavebothshownthattheproposedframeworkiseffectiveinthetransportSEAprocess.

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  • 简介:Wastebiomassisalwaysgeneratedduringtheproductionprocessinindustries.Theordinarywaytogetridofthewastebiomassistosendthemtolandfillorburnitintheopenfield.Thewastemaypotentiallybeusedforco-firingwithcoaltosavefossilfuelconsumptionandalsoreducenetcarbonemissions.Inthiscasestudy,thebio-wastefromaNicotianaTabacum(NT)pre-treatmentplantisusedasthebiomasstoco-firewithcoal.ThesamplesofNTwasteswereanalysed.Itwasfoundthatthewasteswereoftherelativelyhighenergycontentwhichweresuitableforco-firingwithcoal.ToinvestigatethepotentialandbenefitsforaddingNTwastestoaFluidisedBedCombustion(FBC)boilerintheplant,detailedmodellingandsimulationarecarriedoutusingtheEuropeanCoalLiquefactionProcessSimulationandEvaluation(ECLIPSE)processsimulationpackage.ThefeedstockblendingratiosofNTwastetocoalstudiedinthisworkarevariedfrom0%to30%.TheresultsshowthattheadditionofNTwastesmaydecreasetheemissionsofCO2andSOxwithoutreducingtheboilerperformance.

  • 标签: 废弃生物质 工业生产过程 煤炭液化 蒸汽锅炉 化石燃料 燃料消耗
  • 简介:TheHongKongObservatory(HKO)provideslow-levelturbulencealertingservicefortheHongKongInternationalAirport(HKIA)throughthewindshearandturbulencewarningsystem(WTWS).IntheWTWS,turbulenceintensitiesalongtheflightpathsoftheairportareestimatedbaseduponcorrelationequationsestablishedbetweenthesurfaceanemometerdataandtheturbulencedatafromresearchaircraftbeforetheopeningoftheairport.Theresearchaircraftdataarenotavailableonday-to-daybasis.Theremotesensingmeteorologicalinstruments,suchastheDopplerlightdetectionandranging(LIDAR)andradar,maybeusedtoprovidedirectmeasurementsofturbulenceintensitiesovertherunwaycorridors.TheperformancesofLIDAR-andradar-basedturbulenceintensitydataarestudiedinthispaperbasedonactualturbulenceintensitymeasurementsmadeon423commercialjetsforatypicalcaseofterrain-inducedturbulenceinassociationwithatyphoon.Itturnsoutthat,withthetuningoftherelativeoperatingcharacteristic(ROC)curvebetweenhitrateandfalsealarmrate,theLIDAR-basedturbulenceintensitymeasurementperformsbetterthantheanemometer-basedestimationofWTWSforturbulenceintensityatmoderatelevelorabove.Ontheotherhand,theradar-basedmeasurementdoesnotperformaswellwhencomparedwithWTWS.BycombiningLIDAR-andradar-basedmeasurements,theperformanceisslightlybetterthanWTWS,mainlyasaresultofcontributionfromLIDAR-basedmeasurement.Asaresult,theLIDAR-basedturbulenceintensitymeasurementcouldbeusedtoreplaceanemometer-basedestimatefornon-rainyweatherconditions.Furtherenhancementsofradar-basedturbulenceintensitymeasurementinrainwouldbenecessary.

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