简介：Resourcessharedine-Sciencehavecriticalrequirementsonsecurity.Thussubjectivetrustmanagementisessentialtoguaranteeusers'collaborationsandcommunicationsonsuchapromisinginfrastructure.Asanimportantnatureofsubjectivetrust,uncertaintyshouldbepreservedandexhibitedintrustdefinition,representationandevolution.Considerthedrawbacksofexistingmechanismsbasedonrandommathematicsandfuzzytheory,thispaperdesignsanuncertaintyenhancedtrustevolutionstrategybasedoncloudmodeltheory.Wedefinesubjectivetrustastrustcloud.Thenweproposenewalgorithmstopropagate,aggregateandupdatetrust.Furthermore,basedontheconceptofsimilarcloud,amethodtoassesstrustlevelisputforward.Thesimulationresultsshowtheeffiectiveness,rationalityandefficiencyofourproposedstrategy.

简介：在e-Science背景下,重大科技项目档案收集归档对于以数据分析为核心的科学研究范式具有重要意义。本文运用案例研究方法,对中国科学院6个战略性先导科技专项进行研究,分析了重大科技项目档案收集归档存在的问题,并从建立档案收集工作网络与责任体系、落实“四同步”制度、明确档案的归属与流向、编制研究过程文件归档范围等四个方面提出了建议。

简介：采用问卷调查法,从e-Science环境感知、科研信息获取、科研数据存储与管理、科研信息分析与利用及科研交流与合作几个方面,对青年科研人员的科研信息素养现状展开调查。在分析调查数据的基础上,从科研主体的角度提出三条提升青年科研人员科研信息素养的对策：定期开展信息检索教育与检索经验交流,采用多种方法提高科研数据管理意识,构建良好的科研信息共享氛围及完善共享激励机制。

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简介：Terfenol-Disthebestavailablemagnetostrictionmaterialatpresent.Itsmagnetostrictivestraincanreachashighas2000ppm,yetmanypracticalconditionsmustbereasonablycontrolledtoobtainthisfigure.Dr.GuoHeetal.ofBeijingUniversityofScienceandTechnologyinvestigatedtheeffectofsolidificationvelocityonthecrystalorientationofTb-Dy-Fesamples.Theyhavedevelopedaqualitativecriterionforstablecrystalgrowthinpreferred

简介：AquestionaboutscienceWearenowlivinginascientificera,inwhichthetheoryandpracticeofsciencehavepenetratedintoallaspectsofsocietyandscienceisoftenahottopic.However,whatonearthisscience?Thisquestionislargelyneglectedbymanypeople,evenresearchersfocusingonscientificstudiesmaynothaveaveryclearunderstandingofit.

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简介：ChineseScienceBulletinreportsontheinnovativeachievementsinallsubjectareasinscience.Itisaplaceforthehigh-levelexchangebetweenscientistsfrombothChinaandabroad.ChineseScienceBulletinisindexedbySCI,CA,etc.ChineseScienceBulletinprintversionisdistributedglobally.Itselectronicversionisavailableatwww.springerlink.comTheeditor-in-chiefandtheexecutiveeditorsformthecoreofleadershipofChineseScienceBulletin.Thereviewprocess,withfairnessasoneofitspriorities,isorganizedbytheeditor-in-chiefandtheexecutiveeditorswiththeassistanceoftheassociateeditors.ChineseScienceBulletinfeaturesarticles,reviewsandnewsandviews.ChineseScienceBulletinisasemimonthly,24issuesayear,publishingmorethan500articles.