简介:OrganizedbvChinaRareEarthInformationCenterandNationalRareEarthInformationNetworkandco-sponsoredbyInformationSpecialtyCommitteeofChinaRareEarthSociety,TechnologyandEconomySpecialtyCommitteeofChinaRareEarthSociety,NorthernRareEarthIndustryPromotionCenteras
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:In2011,thestartyearofthe'Twelfth-FiveYearPlan'program,aseriesofpolicieswereissuedtargetingonrareearthindustry.Priceofrareearthsfluctuatedsharplyduring2011andconsumerswereconcernedaboutthesupplyofrareearth.Therewasabigchangeinrareearthindustry.Ⅰ.RareearthpoliciesacceleratedtheconsolidationofrareearthindustryChinesegovernmentattachedgreatimportancetothetheproblemsthathamperedthehealthy
简介:5.PricesoflanthanumandceriumproductsdecreasedgraduallyafterreachingthehighPricesoflanthanumandceriumproductsroserapidlywithholisticpricesoaringinrareearthmarketduring2011.However,affectedbythesluggishdemandfrominternationalcrudeoil,petroleumcrackingcatalysts,glass,specialmaterialsandbatteryindustries,thepricedroppedgraduallyafterithitthehighestlevel.Thehighestpriceoflanthanum
简介:Source:MITTechnologyntroductionNotallbreakthroughsarecreatedequal.Somearrivemoreorlessasusablethings;othersmainlysetthestageforinnovationsthatemergelater,andwehavetoestimatewhenthatwillbe.Butwe’dbetthateveryoneofthemilestonesonthislistwillbeworthfollowinginthecomingyears.1.MagicLeap