简介:TheInternationalJournalofSedimentResearch(edited,publishedanddistributedbyIRTCES)has,sincealongtime,beenavaluabletoolforcirculatingtechnicalandscientificresultsinthefieldoferosionandsedimentation.WiththepresentissuetheJournalhasbecometheofficialpublicationofWASER.Whatwillthisaffiliationimplyforthejournalitselfandforthereadership?
简介:TheArabGeologistsAssociation(AGA)isanon-governmentalpan-Arabgeologicalorganizationfoundedin1975bygeologicalcommissions,i.e.,geologistsunions,geologicalsocieties,representingnineArabcountries,namely,Egypt,Palestine,Morocco,Jordan,Libya,Sudan,Lebanon,TunisiaandIraq.OrganizationsofgeologistsinSyriaandYemenjoinedtheAssociationshortlyafter.
简介:Amethodforminingfrequentitemsetsbyevaluatingtheirprobabilityofsupportsbasedonassociationanalysisispresented.Thispaperobtainstheprobabilityofevery1-itemsetbyscanningthedatabase,thenevaluatestheprobabilityofevery2-itemset,every3-itemset,everyk-itemsetfromthefrequent1-itemsetsandgainsallthecandidatefrequentitemsets.Thispaperalsoscansthedatabaseforverifyingthesupportofthecandidatefrequentitemsets.Last,thefrequentitemsetsaremined.Themethodreducesalotoftimeofscanningdatabaseandshortensthecomputationtimeofthealgorithm.
简介:Thispaperfirstestablishesthepriorglobedynamicalmodelbygeophysics,whichisasolidearthelasticdeformationmodel.Then,theparametersoftheglobedynamicmodelcanbeobtainedbyinvertingthegeodeticdata.Theinversemethodcanbeusedinseismologyandgeology,andtomakeearthquakeprediction.
简介:ItisjusttwoyearssinceaprofileofAGIDappearedinEpisodes(Vol25,No3,p.218).Atthattimewerecountedthemanyachievementsoftheorganization,firstestablishedin1974,butalsonotedthat'anawarenessoftherelevanceofgeosciencetomanyaidprojects,andtheproliferationofNGO's,bothlargeandsmall,workingintheenvironmentalandresourcesectorshasradicallychangedtheworldinwhichAGIDseekstooperate'.WealsonotedthatthechangehashappenedtosuchanextentthatAG1Dhas'toaddressthequestionastowhetherthetimehascomeeitherforittowindupitsoperationsandretiregracefullyfromtheinternationalsceneortocontinue'.
简介:这研究在中国调查在夏天降雨之间的统计连接,使用欧亚的融雪水等价物(SWE)驻扎的从513的夏天降雨观察的数据集并且在在从1979~2004的时期期间的NCEP/NCAR分析的前面的春天,观察卫星的融雪水等价物,和大气循环变量。开始的二个联合模式被使用单个价值分解(SVD)识别方法。春天SWE可变性的领先的SVD模式在西藏的高原和东亚的一些小区域与相反的异例在大多数欧亚大陆显示出协调负异常。模式显示强壮内部年度可变性,迭加在上一内部发生在1980年代末的十的变化,与坚持的否定阶段在19791987并且经常的积极阶段以后。当领先的模式在它的积极阶段时,它在整个大多数欧亚大陆在春天对应于更少的SWE。同时,在西藏的高原和东亚,在南方的夏天降雨和东南中国的一些小区域的过多的SWE趋于被增加,而它将在黄河的起来到达被减少。在里面最近二十年,在欧亚大陆的减少的春天SWE可以在南方和东南中国是为在诺思和东北中国和更多重要降雨事件的严重干旱的原因之一。春天SWE可变性的第二个SVD模式在西方、东方的欧亚大陆出现在空间变化对面,当大多数西藏的高原和东亚在阶段时。这个模式显著地在诺思和东北中国与成功的夏天降雨相关,少些也就是说在东方欧亚大陆和西藏的高原在西方的欧亚大陆和过多的SWE触发SWE趋于在诺思和东北中国与减少的夏天降雨被联系。