简介:Cartimandua'srolehasbeenmuchdiscussedbymodernhistorians.1HerpositionasqueenoftheBrigantes,wifeofVenutiusandclientofRomehasbeendefinedbyscholarsinthepreviousfiftyyears.OneareanotthoroughlyexaminedisTacitus'portrayalofhercharacter,whichchangesdramaticallyfromthelengthypassageinAnnals12.32-40totheshortaccountofHistories3.45.Whileneithersectionflattersthemonarch,TacitusdestroyshercharacterintheHistories,equatingherwithfiguressuchasG...
简介:Thispaperhasorganizedandsummarizedtheeconomicanalysisonclimatechangefromfiveangles,namely,connotationofdiscountrate,identificationofanddisputeaboutdiscountrate,discountingway,impactofthediscountrate,andtheintegratedevaluationmodelofclimatechangeimpactandthediscountevaluation.Astheclimatechangeeconomicanalysisshows,thereisamajordisputeaboutdiscountratebetweenthemarketschoolandtheethicschool.Rateofdiscountlargelyrelatestothepresentvalueofpotentiallossattributabletoclimatechange,andtheninfluencestheselectionofpoliciesforadaptingandslowingdownclimatechange.Inthepast,theconstantindexdiscountwasadoptedasthemainway.Butwiththefullunderstandingofdiscountrate,theuncertaintyoflossattributabletoclimatechangehasbeenconsideredinthediscount.
简介:Theeffectsofverticalwindshearontropicalcyclone(TC)intensitychangeareexaminedbasedontheTCdatafromtheChinaMeteorologicalAdministrationandtheNCEPreanalysisdailydatafrom2001to2006.First,theinfluenceofwindshearbetweendifferentverticallevelsandaveragesindifferenthorizontalareasarecompared.Theresultsindicatethattheeffectofwindshearbetween200and850hPaaveragedwithina200-800kmannulusonTCintensitychangeislargerthananyothercalculatedverticalwindshear.High-latitudeandintenseTCstendtobelesssensitivetotheeffectsofVWSthanlow-latitudeandweakTCs.TCsexperiencetimelagsbetweentheimpositionoftheshearandtheweakeninginTCintensity.Averticalshearof8-9m/s(9-10m/s)wouldweakenTCintensitywithin60h(48h).Averticalsheargreaterthan10m/swouldweakenTCintensitywithin6h.Finally,astatisticalTCintensitypredictionschemeisdevelopedbyusingpartialleastsquaresregression,whichproducesskillfulintensityforecastswhenpotentialpredictorsincludefactorsrelatedtotheverticalwindshear.Analysisofthestandardizedregressioncoefficientsfurtherconfirmstheobtainedstatisticalresults.
简介:TenhealthytreespecieswithregularmanagementwereselectedonthecampusofBeijingForestryUniversity,andtheybelongtotalltree,shrubandliana,respectively.Waterpotentialandhydraulicarchitectureparametersofone-year-oldtwigsweremeasuredinsunnydayinthelasttendaysofMarchtothemiddletendaysofMayin2002.Theresultsshowthatthedailychangeinwaterpotentialoftreespeciesexaminedappearsconvex,i.e.thewaterpotentialishigherinthemorningandevening,and...
简介:Onthebasisofstereoimageanalysis,thechangedetectionofman-madeobjectsinurbanareasisintroduced.Informationoftheheightofman-madeobjectscanbeappliedtoreinforcetheirchangedetection.BycomparisonbetweenthenewandoldDSMs,thechangedregionsareextracted.However,ouraimistodetectchangesofman-madeobjectsinurbanareaandfurtherinthepotentialareasbythemeansofline-featurematchingandgradientdirectionhistogram.TheexperimentsbasedontheaerialimagesfromJapanhaveproventhatthealgorithmiscorrectandefficient.
简介:Objective:Toinvestigatetheroleandclinicalsignificanceofp16proteininCondylomaAcuminatum(CA)anditscancerization.Methods:Theexpressionofp16proteinwastestedin33CAsamplesand7cancerizedCAsamplesbyimmunohistochemicalassays.Results:Therewasabnormalexpressionofp16proteininCAandcancerizedCA,mainlymajorproteinexpression.Thep16proteinexpresseedindifferentlocationsindifferentcaseswasasfollows:Inbasallayercellsinnormalcuits;inspinouslayer,granularlayerandstratumcorneumlayercellsinCA;inkeratinpearlperipheralandspinouslayercellsincancerizedCA.Conclusion..Therewasmajorexpressionofp16proteininCAandcancerizedCA,andtheseproteinofthetwogroupsmightnotnaturallybethesame.Ourstudyindicatedthatinclinicalpractice,whenmajorp16proteinexpressioninCAoccurs,it'sriskofcancerizationshoudbesuspected.
简介:Climatechangeisaninevitabletrend,whichchallengessecurityofwaterresourcesinChina,especiallyincities.Assessingvulnerabilityofwaterresourcetoclimatechangeincitieshasimportantroleforpolicymakers.Thepaperconstructsavulnerabilityfunction,includingexposure,sensitivityandadaptivecapacity,accordingtothevulnerabilityconceptproposedbyIPCC,establishesanassessmentindicatorssystemofwaterresourcestoclimatechangeincities,andanalyzesvulnerabilityfeaturesofChinesecitesbasedon655cities'datain2006.Thevulnerabilityassessmentresultsshowthattherearedistinctivedifferencesamongallthecities,betweeneast,centralandwestcities,betweenordinary,bigandmegacities,whilethereisnostatisticalsignificantdifferencebetweennorthandsouthcities.Basedontheresearch,thepapersuggeststhatstrategicemphasisshouldfocusonthecentralcitiesandordinarycities
简介:Thispaperfocusesonaseriesofquantitativeanalysismodels,suchasgreyrelationalanalysismodel,hierarchicalclusteranalysismodel,principalcomponentanalysismodel,linearregressionmodelandelasticcoefficientmodel.Thesemodelsareusedtoanalyzethecomprehensivefunctionandeffectofdrivingforcessystemically,includinganalysisonfeatures,analysisfordifferentiatingtheprimaryandthesecondary,analysisoncomprehensiveeffects,analysisofelasticity,analysisofprediction.Theprimaryandcharacteristicfactorscanbeextractedbyanalysisoffeaturesandanalysisfordifferentiatingtheprimaryandthesecondary.Analysisonpredictionandelasticitycanpredicttheareaofcultivatedlandinthefutureandfindoutwhichfactorsexertgreatinfluenceonthecultivatedlandsupply.
简介:HubeiProvinceisoneofthecriticalgrainproductionregionsinChinawiththequantitativecultivatedlandandgoodnaturalcondition;itplaysanimportantroleingrainsecurityinChina.However,owingtorapideconomicgrowth,populationpressures,anthropogenicactivities,andnaturaldisasters,thequalityofthecultivatedlandhassignificantlydecreasedinrecentyearsandenvironmentalresourcesareunderincreasingstress.Inordertoresearchonthemechanismofthechangeofthecultivatedland,thispaperanalyzesqualitativelytheinfluencingfactorsofthecultivatedlandchangeinHubeiProvincefrom1978to2004,anddistinguishesthedirectfactorsfromindirectinfluentonesbymeansoftheapproachofthepathanalysis.Theresultshowsthattheareaoftherentlandinthetotalnon-agriculturalland,thetotalpopulationgrowthandthefixedassetinvestmentarethemainfactorsdecidingthechangeofthecultivatedland.Meanwhile,thedensityofthetransportationnetwork,theproportionofpercapitaincomeofruralcitizenstothatofurbancitizens,non-agriculturalgrossdomesticproduction’sshareofthetotalGDPhasalessdirecteffectbutamoreindirectinfluenceonthedecreaseofthecultivatedlandinHubeiProvince.Theresultmeansthatwhilesomefactorshavelessdirectinfluenceonthechangeofthecultivatedland,itsindirectinfluencearesignificant,viceversa.Thusit’snecessarytoadoptacomprehensivemeasurementtoprotectthecultivatedland.
简介:Theauthorsreviewedthepreviousresearchresultsaboutthecolorchangesinheattreatedwood,anddeeplyanalyzedtheeffectofheattreatmentmethodandparametersincludingtemperatureandtimeofheattreatment,speciesandchemicalcompositiononthecolorchangesinheattreatedwood.Therelationshipsbetweencolorchangesandchemicalcomposition,physicalandmechanicalpropertieswerefound.Theopticalstabilityofthecolorofheattreatedwoodwasstudied.Somesuggestionswereproposedforthefutureresearch.
简介:AspecialinterpolationprogramGREENhasbeendevelopedtodeterminetheclimaticparametersforthedistributionregionofChinesepine(PinustabulaeformisCarr.)basedontheresearchesonthedistributionofthetreespecies.Thecentralregion,whichisthemostsuitabledistributionregion,andpotentialdistributionregionofthespeciesundercurrentclimaticconditionsweremappedusingaGeographicInformationSystemIDRISI.Accordingtotheaveragedpredictionsby5GCMsfor2030,aprojecti...
简介:Abetterunderstandingofarecentlyraisedargumentonwhetherthereoccursastructurechangeduringyieldinghasbeenacquiredbyusingmolecularsimulation.Thatis,whenmonitoringthedisplacementsofallatomsbeforeandaftertheyield,astructuretransitiondoesoccur,whichisthe'atomicjump'thatcoordinatestheamountoftheatomsinthepolymerandmakesalargestepbeyond--0.05nmforallthoseatoms.Resultsindicatethatthecomplexofpolymerchainpackinginducesthemultipleatomicjumpsaroundtheyieldpoint.Thisexplainswhypolymershaveabroaderyieldingpeak.``
简介:在这研究,空间分发和在东北中国的农业热和降水资源的变化趋势被分析在这个区域在agroclimatic资源上探索未来气候变化的影响。这研究基于输出从为从2005~2099的东北中国的地区性的气候模型系统的气象学的数据,在低、高的放射的强迫情形RCP4.5(低排放情形)和RCP8.5(高排放情形)下面是在IPCCAR5求婚了。在基线情形下面的模型产量,和RCP4.5和RCP8.5情形从1961~2010在东北中国从91个气象学的车站与观察数据被吸收执行分析。结果显示那:(1)到北方的来自南方的温度减少的空间分发,和温度被投射在所有区域增加,特别在一种高排放情形下面。在基线情形下面的平均年度温度是7.70整灭牥瑡牵?癥湥獴椠?桃湩?畤楲杮ㄠ吗??