简介：监督分类法在遥感影像分类中应用广泛,结合已有地质资料和实测地质剖面信息,将研究区岩性分为苏维依组泥岩和粗砂岩,库姆格列木群泥岩、砾岩和含砾粗砂岩,巴什基奇克组粗砂岩和砾岩,巴西改组细砂岩等8个类型,运用ENVI提供的常用监督分类方法——最大似然法,对研究区的遥感影像进行岩性分类研究。并利用混淆矩阵分别对不同影像的分类结果进行精度评价,结果表明ZY-3影像的分类总体精度达到了78.65%,Kappa系数为0.7606,能够较好地进行岩性信息提取,具有较高的可靠性,可在地质调查工作中推广,能够有效地减少面积性地质测量工作,特别适用于岩石裸露程度较高的艰苦工作区。

简介：阐述利用R2V32对光栅图进行矢量化的方法，同时给出了将形成的矢量化图转换成CASS环境下的DWG格式数据的作业流程。

简介：Source:MITTechnologyntroductionNotallbreakthroughsarecreatedequal.Somearrivemoreorlessasusablethings;othersmainlysetthestageforinnovationsthatemergelater,andwehavetoestimatewhenthatwillbe.Butwe’dbetthateveryoneofthemilestonesonthislistwillbeworthfollowinginthecomingyears.1.MagicLeap

简介：1.Generalsituationofrareearthmarket2015isthelastyearofthe"twelfth-fiveyear"andalsothekeyyearto,comprehensivelydeepenreform.AgreatprogresshasbeenmadeinChina’seconomicsystemreformduringtheperiod.Fromthepointofeconomicoperation,China’sindustrialeconomymadeasteadyprogress.Addedvalueofhigh-techindustryincreasedby10.4%duringthefirstthreequarters,4.2%higherthantheoverallindustrialgrowthrate.

简介：Inthefirsthalfof2015,rareearthmarketdeclinedafteraperiodofpricerising.Rareearthpricesfacedseverdownwardpressurecurrently.Itwasthoughtthefallingtrendcouldlastforsometime.InearlyJanuary,mainstreampriceofdidymiumoxidewas280,000-285,000yuan/ton.Itstartedtoriseslowlyandincreasedby10,000-12,000yuanpertoninearlyFebruary.Thepriceofdidymiumoxidehad

简介：2015TopTenRareEarthScienceandTechnologyNewshasbeenrevealedbyChinaRareEarthInformationCenter,NationalInformationNetworkandthemediaof'RareEarthInformation','ChineseRareEarths','ChinaRareEarthInformation'andChinaRareEarthNet.Thetoptenrareearthscienceandtechnologynewsareselectedfrommorethan100rareearthscienceandtechnologynewsreportedbythe

简介：China'srareearthexportpolicychangedgreatlyin2015.RareearthexportquotaswerecancelledinearlyJanuaryandexporttariffswereputanendinearlymay.Thecancellationofbothexportpoliciesgreatlystimulatedrareearthexportmarketsduring2015.Chinatotallyexportedabout34,800tonsofrareearthproductsduring2015,up25.62%year-on-year;exportvaluereachedabout$373million,up0.24%year-on-year;averageexportpricewas$10.71perkg,down20.20%year-on-year.

简介：Withthesixrareearthgroups'productionrestrictionandthecrackdownonillegalproductionandsmuggling,rareearthmarketfluctuatedslightlyduringthefourthquarterof2015.PriceofsomerareearthproductslikePr,NdandDykeptonincreasingwhilepriceofLa,Ce,EuandYtslippedconstantly.Mostoftheconsumersexpressedthatitwasadifficultyearin2015.Priceofseparationproductshaddroppedbelowthecost.Many

简介：ImportofrareearthmetalandalloyinChinaup38%inthefirstquarteryear-on-yearAccordingtocustomsstatistics,Chinaimported27.67tonsofrareearthmetalsandalloysinMarch,valuedUSD427,200.ImportsfromJanuarytoMarchaccumulatedto100.4tons,up38.1%year-on-year.TheimportvaluetotaledUSD1.28millionduringthefirstthreemonths.DuringJanuarytomarch,Chinaimported65.9

简介：6."Developmentofhigh-performancerareearthluminescentmaterialforwhiteLED"projectbyFujianInstituteofResearchontheStructureofMatter(FJIRSM)passedtheacceptance"Developmentofhigh-performancerareearthluminescentmaterialforwhiteLED",akeyspecificS&TsubjectinFujianprovince,ledbyFujianInstituteofResearchontheStructureofMatter(FJIRSM)passedtheexpertsacceptanceonJanuary29,2015.

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简介：针对水库渗漏分类研究少、不系统、欠规范之现状,基于广泛查阅文献与系统归纳总结,建立按渗漏部位、渗漏介质及其组合的水库渗漏分类体系,并结合多年来工程实践,提出水库渗漏处理原则与基于水库渗漏类型、防渗条件差异的针对性处理措施,以期提高从业人员对水库渗漏问题理论认知与工程实践技能。

简介：本文介绍用《方正智绘》系统成功地编辑地质图图件的过程，总结了采用该系统编辑地质图的特点和体会

简介：根据恩洪煤矿二号井实际情况，采用历史资料统计、实验室分析及现场实测相结合的方法。确定出恩洪煤矿二号井9号煤层煤巷掘进工作面突出危险预测敏感指标及其临界值。

简介：参考文献是科技论文不可缺少的重要组成部分，是对正文内容的补充说明。在正文中引用文献之处一定要在右上角标注编号（编号即为参考文献序号），著录格式为：

简介：结合杭州市土地征收工作的实际情况，对土地权属确认图的成图技术进行了介绍，包括权属调查要点、面积测量要求、图件制作技术等，为土地权属确认图的质量提供保障。

简介：通过对R944B型液压挖掘机回转故障的诊断与处理，确定了更换和修复部分零件的故障维修方案，避免一次性更换昂贵部件总成，获得了较好的故障维修处理效果，降低了修理成本。

简介：StategovernmentIntensifiedregulationonrareearthindustryduringthe'Eleventh-Fiveyear'period(2006～2010)andhadimplementedseriesofcontrolmeasures,whichplayedanpositiveroleinreversinglowsellingpriceofrareearths,prohibitingillegalmining,improvingscatteredoperationandcrackingdownonsmuggling.Throughassetreplacement,

简介：本文论述了作者对数字化成图的认识以及DMAPS系统的应用流程和经验体会,并对数字化成图软件的改进提出建议。

简介：地质组图的附图编制班耀政（杭州地质十队杭州１１３００７）地质制图主要是运用制图学的理论基础，结合地质学特征赋于新的表现形式，并不断发展和创新。当前随着新的理论和新的方法进行的组图编制，必将在全国推广应用。对此，本文着重对附图编制的原则和方法论述如下：...