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简介：一座大楼城市的流动上的密度的效果与RNGκ用一个CFD模型被调查-ɛ骚乱闭合计划。有不同的造的27个案例是密度参数(例如，大楼和街峡谷纵横比)数字地被模仿。当大楼的密度参数变化，不同流动政体出现。当街峡谷相对狭窄、高时，在垂直方向的二个相反旋转的旋涡被产生。沿着街的风速被大楼的长度主要影响。然而，以一座单个大楼的密度参数发现或概括街峡谷流动的特征是很困难的。这是因为复杂流动模式由于旋涡结构和旋涡数字的变化出现。平均卷的涡度大小是很好的指示物尽管有流动的强壮的相关性，在大楼的密度参数的变化上反映流动特征。平均卷的涡度大小是大楼的长度和街峡谷宽度的强壮的功能的多线性的回归表演。大楼的长度的增加减少街峡谷的涡度流动，当时，在街上，峡谷宽度增加的增加涡度。

简介：［1］Holthuijsen,L.H.,Booij,N.andHerbers,T.H.,1989.Apredictionmodelforstationary,short-crestedwavesinshallowwaterwithambientcurrents,CoastalEngineering,13,23～54.［2］Lavrenov,I.V.etal.,1998.Estimationoftheextremeheightsofwindwavesinthecoastalseaarea,Proceedings5thinternationalworkshoponwavehindcastingandforecasting,January26～30,Melbourne,FL.USA,439～450.［3］LILuping,1998.TheeffectontheseafloorerosiononwavehindcastingincoastalareasofBohaiSea,Proceedings5thinternationalworkshoponwavehindcastingandforecasting,January26～30,Melbourne,FL.USA,421～432.

简介：因为在城市的区域的复杂变化，基于面具技术修改了CVA申请能使缩小非植被的效果变化并且在很大程度上在效率之上改善。而且，从方法收极的阴谋，有PVI的绝对尖、全部的大小的技术措施变化计算了根据线性与用3DG-S计算的least-squareestimation和GVI合适转变。最后，这应用在2002和2005与武汉的陆地卫星ETM+形象被执行，并且由错误矩阵估计了，以它能检测的方法94.91%改正的变化象素，和全部的一致系数Kappa能到达to0.85。评估结果演示趋势作为城市的植被的一种有效、有效的选择改变的这个新应用程序抽取。

简介：ＩＭＰＬＩＣＡＴＩＯＮＯＦＣＬＩＭＡＴＥＣＨＡＮＧＥＦＯＲＡＧＲＩＣＵＬＴＵＲＡＬＰＲＯＤＵＣＴＩＯＮＩＮＥＡＳＴＥＲＮＡＲＥＡＳＯＦＣＨＩＮＡＷａｎｇＦｕｔａｎｇ（王馥棠）ＩＭＰＬＩＣＡＴＩＯＮＯＦＣＬＩＭＡＴＥＣＨＡＮＧＥＦＯＲＡＧＲＩＣＵＬＴＵ...

简介：这研究的目的是在岩石地点在50年里为exceedance的2%和10%概率包括鈥楶eak地面加速鈥?价值为Yangon和它的包围区域开发概率的地震危险地图。现在的学习区域在N13掳3的纬度之间是位于的7鈥?和N20掳2鈥?和E93掳3的经度5鈥?和E99掳5鈥吗？学习区域集中于与大约200km的半径在Yangon附近集中的九个来源地区。概率的地震危险地图被ArcGIS-9.3软件创造。

简介：山谷经济是在被山谷开发的各种各样的人物定义的多山的区域开发的一个新模式，并且是区分为多山的区域开发的节俭的地理模式。在在山谷的不同多山的元素的分发的特殊空间联合关系是为山发展研究的新题目，并且如此的研究为研究和惯例两个都是有意义的。把简短探索基于关于多山的区域开发和追随者的长期的研究进涵义和山谷经济的空间组织进程，作者在北京多山的区域分析了山谷经济的开发的现在的状况，在北京多山的区域学习了特征和山谷经济的空间结构的变化的影响，并且最后建议了山谷经济的空间结构的合理安排山谷经济在新时代在北京多山的区域在发展和功能的转变起一个重要作用，这在这研究被考虑。第一，山谷经济没被行政边界构画出，并且它沿着主要交通线粗略地在多山的区域连接大多数村庄。因此，山谷经济能在多山的区域对发展施加积极影响，至少在象在多山的区域和农村、城市的区域的协调发展的工业结构的重新整理那样的方面。另外，在北京多山的区域的山谷经济在第二等的集中的一个空间组织阶段被发展，这被发现，它被节省资源的、生态的保护和工业优化描绘。因此，山谷经济的发展将在多山的区域对在生态的保护和经济开发之间的协作有用，并且将支持多山的区域的综合发展。在北京多山的区域的山谷经济的发展中的模式将在北京多山的区域的功能的角色的转变为决策提供基础，并且在另一方面，将在北京外面在多山的区域为研究介绍经验。

简介：-Acombinednumericalmodelforcomputingmixingareasofpollutionverticaljetdischargingintotidalflowshasbeendeveloped.Thisnumericalmodeliscomposedofa2-Ddepth-averageddynamicfar-fieldnumericalmodelanda2-Dverticaldynamicnear-fieldnumericalmodel.Theformerusesfinitenodemethodtocomputevelocity,andimprovedfinitenodemethodtocomputepollutantconcentrationdistribution;thelatterisak-eturbulencemodel,andusesSIMPLE(Semi-ImplicitMethodforPressureLinkedEquations)methodtocomputevelocity.Atthesametime,theformerprovidesboundaryconditionsforthelatter.Thismodelcansimulatebothfar-fieldpollutantconcentrationdistributionandnear-fieldverticalrecirculationquicklyandprecisely.ThismodelhasbeenverifiedbymeasureddataofpollutantFoftheDachangreachoftheChangjingRiverandtestdatapresentedbyChenelal.(1992).Onthebasisofverification,theauthorsuseadesignedhydrographtocomputethismixingareaforacer

简介：作者在一个居住区域设计了一个生态的暴风雨水系统代替常规地下的隧道让暴风雨水的收集以便减少营养素，沉积排出。这个系统作为解除溢出到附近的溪，一条开的绿沟，一个存储池溏，和naturalsub溪的排水渠道包含自然亚溪。亚溪被设计集成于社区风景，它不仅增加水用法的效率，而且改进在议程21要求了的社区住处区域的美学质量。这研究为一个社区水系统的设计证明了一个开的暴风雨水集合和利用系统的可行性。

简介：BasedonanalysesofsurfaceandcoresedimentsinthetidalflatsoftheYangtzeEstuaryandcoastalareas,thepresentstudyrevealsphosphorousformsexistinginsedimentsandtheirdistributions.Theresultsshowthatphosphorusintidalflatsedimentsinthestudyareamainlyconsistsofinorganicphosphorousforms,involvingDP,Fe-P,Al-P,andCa-Pandorganicphosphorousforms,inwhichCa-PandOParedominantcompositions.Thisfindingindicatesthatspatialdistributionsofvariousphosphorousformsarerelatedtosedimentaryenvironmentsinwaterandgrainsizesofsediments,andareinfluencedbysewagedischargesandeffluentsfromaquacultivationinthecoastalareas.

简介：Onthebasisofstereoimageanalysis,thechangedetectionofman-madeobjectsinurbanareasisintroduced.Informationoftheheightofman-madeobjectscanbeappliedtoreinforcetheirchangedetection.BycomparisonbetweenthenewandoldDSMs,thechangedregionsareextracted.However,ouraimistodetectchangesofman-madeobjectsinurbanareaandfurtherinthepotentialareasbythemeansofline-featurematchingandgradientdirectionhistogram.TheexperimentsbasedontheaerialimagesfromJapanhaveproventhatthealgorithmiscorrectandefficient.

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简介：Guizhouisoneofthedominatingkarstregions,wherelateriteiswidespread,inChina.Seventy-twolateritesamplesweretakenfromtwelvelateritesectionsinthekarstareasofGuizhouProvince,whicharepossessedoftypicalsubtropicalkarstgeomphologicalandecologicalenvironmentalfeaturesandhaveevolvedcompletelyfromdolostonesandlimestones.Intermsofthemajor,traceandREEdetaforthdsamplesthispaperdiscussesthegeochemicalcharacteristicsoflateriteinthekarstareaswithanattempttodisclosethegeochemicalprocessandevolutionaryruleoflateriteformation.Therehavebeeninvolvedthreeimportantpedogeneticgeochemicalprecessesintheformationoflateriteinthekarstareas:(1)enrichmentofsiliconandaluminumanddepletionofcalciumandmagnesium;(2)enrichmentofironandmanganese;and(3)enrichmentofaluminumanddepletionofsilicon.Duringtheformationandevolutionoflaterite,obviousenrichmentanddifferentiationoftraceelementssuchasCu,Pb,Zn,Ni,Co,Cr,Pb,F,Cl,andAscanbeobserved,butfortherare-earthelements,theirenrichmentisremarkableagainstaweakdifferentiation.TheREEdistributionpatternsinthelateritearesimilartothoseofitsparentalcarbonaterocks.

简介：EasternChinaandvicinalseaareas(98°~150°E,5°~50°N)arelocatedinthejunctionzoneofEurasianandPacificplates,anditisalsoprofoundlyinfluencedbythecollisionbetweenIndianandEurasianplates.Weutilizedsurfacewavedatarecordedby35digitalseismicstationsinthearea,extracteddispersioncurvesoffundamental-modeRayleighwavesalong1252pathsbymeansoftime-frequencyanalysisbasedonmultiple-filterandothertech-niques.Thestudyareawasdividedintoagridof1°′1°,groupvelocitydistributionsoffundamentalRayleighwavesbetween10~158sweredeterminedbyOccam￠sinversion.Thesevelocitydistributionsroughlydepictthelateralvariationsofshearwavevelocitiesindifferentdepthranges.WiththedeterminedpurepathdispersionswefurtherinvertedfortheSwavevelocitystructuresalongtwoprofilesfromeasternTibettoPacificOceanandfromSouthChinaSeatoMongolia.Itisfoundthatthelateralheterogeneityisobviousdownto400kmdepth,andthevelocitystructuresarecorrelatedwithtectonicunitsinthestudyarea.

简介：Basedontheassumptionofglobalsealevelrisingbetween30and100cminthefuture100yearsbyIPCC(1990)inadditiontotheeffectoflocalgroundsubsidence,thecoastlinewillretrogradefor50-70kmwhosealtitudeswillbe2.6-3.3maboveMSLofHuanghaiSeainthewesterncoastalareaoftheBohaibayin2100.Thetransgrassiveareaisabout10,000-11,500km.Iftheeffectofset-upofstormsurgeisconsidered,thetransgressiveareawillreach16,000km.Sealevelrisewhichisaseriouscoastaldisasternotonlyinundatesalotofcoastallowland,butalsoincreasesthefrequencyandintensityofstormtides,andresultsinthesalinizationofsoils.Inviesofthissituationwerecommendatrinitycomprehensivemeasureoftreatment,namely,"buildingseawalltopreventtides-divertingtheHunagheRivertosettleitssedimentloads-raisingtheconstructionalbase".

简介：In1997,theTZ-162wellinTazhongareaoftheTarimbasinhitthelowerPaleozoicdolomitereservoiratadepthof5,900m.Thedistributionofthedolomitereservoir,however,wasverydifficulttodelineateduetothecomplexsurfaceconditionsandpoorseismicproperties.High-precisiontransientelectromagneticsounding(TEM)wasconductedandgoodresultsobtainedinthisarea.Thispaperdiscussedtheprinciple,dataprocessingandinterpretationofthismethod.Theresultsofstudyingthedolomitereservoirsdemonstratedtheeffectivenessofthemethodinstudyingthelow-resistancedolomitereservoirsinthehigh-resistancecarbonates.Thismethodshouldbeaneffectiveonetostudyreservoirsinareaswithsimilarphysicalpropertiesaswell.

简介：Morethanahalfofstrongearthquakesintheworldarelocatedinshallowdepthatthesubductingplateboundaryinsqueezedzones.Owingtothedifferenceinspeedbetweenthemovingseaplates,thestrainenergyisaccumulatedandreleasedcyclicallyinsqueezedzones.Severalmethodsweredevelopedtoanalyzethemedium-andshort-termpotentialofmainshocks.Thesemethodscanbeclassifiedinto(1)lessdatasystemsusingthetheoryofgreymodelforearthquakeprediction,(2)quasi-periodicsystemsusingearthquakeactivityanalysis,(3)systemsofgroupedactivityusingorderanalysis,and(4)nonlinearsystemsusingbackpropagation(BP)ofneuralnetworkforpredictionanalysis.Basedupontheseanalyticmethods,riskmapsforthepredictionofstrongearthquakescanbedrawnusingtherecordsofstrongearthquakesinTaiwanforthepast100years.Theseriskmapsinclude(1)aseismicriskmap,(2)alossriskmap,(3)ahazarddegreemap,and(4)alossdegreemap.Theseriskmapsmakeitpossibletodoamedium-termpredictionofmainshocksonthe10-yearscale.

简介：在这份报纸，组织上，大楼的特征被也就是，使用二个质地描述符确定方形的根对差别(SRPD)并且官方补给*。然后，一个新奇方法，基于SRPD并且官方补给*，到在从很高的分辨率SAR的城市的区域的摘录大楼区域，图象被介绍。结果证明这个方法有能力在城市的区域把大楼区分开来与复杂特征，它能为印射的土地被采用并且为消除操作提供支持。

简介：Theutilizationofsedimentinreservoirsasresourcesisanefficientwaytoreducereservoirsedimentationandturndisadvantageintobenefit.Basedoneconomic,socialandecologicalfunctionsofsedimentresources,thispaperputsforwardatwo-layer,three-dimensionalevaluationindexsystem.ItalsoestablishessixdirectandindirectindicatorswiththeirformulastocalculatethecomprehensivebenefitsofsedimentutilizationintheXixiayuanreservoiroftheYellowRiverwithavolumeof2000m3.Theresultsshowthatsocialbenefitswouldbemoreprominent,withtheecologicalbenefitscomingsecond.ThisdemonstratesthattheindirectpublicvalueofutilizingthesedimentresourcesintheYellowRiverBasincanbefargreaterthanitsdirecteconomicvalue.