简介:A3D扩充了现实航行系统使用实体镜的图象为teleoperated机器人系统被开发。在模仿的模型和实际机器人的录像图象之间的精确匹配能被认识到,它帮助操作员正确地并且可靠地完成遥控任务。系统介绍不同地图翻译转变方法为实体镜的显示器拿视差图象,提供操作符immersive3D经验。同时,动态立体声录像的一个快、精确的登记方法被建议,并且一个虚拟机器人的有效集成和真实立体声景色能被完成。系统的操作错误在不到2.2公里和平均错误被维持的初步的实验表演是0.8547,在x的0.9093和0.6972公里,y,z方向分别地。大量实验象按按钮那样,等等拉抽屉也被进行评估系统的表演。结构的深度信息能是的可行性研究表演很快并且在遥远的环境认出了地点。图象覆盖系统的扩充现实能增加操作精确性并且由于看的直觉的3D减少过程时间。
简介:Companiesthatnotonlyabidebyenvironmentalregulations,butalsodiscovernewtechniquesandadoptnewmanagementmethodstoreducenegativeenvironmentalimpactsoftenhavepositiveeffectsoncorporateprofitability.Inordertomeettheneedsofsustainabilityofenterprisesandprotectenvironment,theconceptofgreenmanagementisdevelopedandregardedasanimportantdirectionofmanagementtheoryofthe21stcentury.Thoughtherearemanytheoriesandpracticesaboutgreenmanagementinwesterncountries,theyarebuiltbasedonthedevelopedmarketeconomy,whicharenotsuitableforChineseenterprisesabsolutely.Byanalyzingtheviewpointsandmodelsoftheoverseasanddomesticexpertsandscholars,combiningcharacteristicofChina’smarketeconomy,thispaperpointsouttherealconnotationofenterprisegreenmanagement-thecombinationofecologicalharmony(harmonybetweenhumanandnature)withhumanharmony(harmonyamongpeople),establishesa3Dtheoreticalmodel,pointsoutthedefectsofenterprise’sgreenmanagementinChina,reanalyzesandredesignedenterprisegreenmanagement,whichpavesthewayforthedeeperandbroaderdevelopmentofgreenmanagement.
简介:Segmentingwholeheartfromcardiaccomputedtomography(CTimagescanprovideanimportantbasisfortheevaluationofcardiacfunctionandhelpimprovetheaccuracyofclinicaldiagnosis.Manualsegmentationisthemostaccuratemethodforcardiacsegmentation.Butitistimeconsumingandnotsufficientlyreproducible.However,cliniciansstillrelyonthismethodinpracticalapplications.Soafullyautomaticmethodisneededtoimprovethesegmentationefficiency.Thispapeproposesaregistration-basedautomaticapproachforthree-dimensional(3DsegmentationofcardiacCTimages.TheproposedmethodutilizesthesimilarityocardiacCTimagesbetweendifferentindividuals,andusesregistrationtoachievethesegmentation.Affinetransformationisfirstlyimplementedtoachieveglobalcoarseregistration.Then,cubicB-splinesareusedtorefinethelocaldetailsinlocallyaccurateregistration.Mutualinformation(Ml)isusedasthesimilaritymeasure,andadaptivestochasticgradientdescent(ASGD)astheoptimizationalgorithm.Oumethodisappliedtothedual-sourcecardiacCTimagestosegmentwholeheartExperimentalresultsshowthattheproposedmethodcanautomaticallysegmentwholeheartfromcardiacCTimages.
简介:摘 要 本文以教思考、教体验、教表达的“三教”理念,引领《3D One AI语音识别编程探究》教学课例,简述高中课堂信息技术教学培育学生核心素养的体会:激发学生兴趣,体验知识内涵;核心问题引领,促进学生编程中的计算思维;引导表达交流,提升社会信息责任,促进学生核心素养的培育。
简介:Ithasbeenshownthattheprogressinthedeterminationofmembraneproteinstructuregrowsexponentially,withapproximatelythesamegrowthrateasthatofthewater-solubleproteins.Inordertoinvestigatetheeffectofthis,ontheperformanceofpredictionalgorithmsforbothα-helicalandβ-barrelmembraneproteins,weconductedaprospectivestudybasedonhistoricalrecords.WetrainedseparatehiddenMarkovmodelswithdifferentsizedtrainingsetsandevaluatedtheirperformanceontopologypredictionforthetwoclassesoftransmembraneproteins.Weshowthattheexistingtop-scoringalgorithmsforpredictingthetransmembranesegmentsofα-helicalmembraneproteinsperformslightlybetterthanthatofβ-barreloutermembraneproteinsinallmeasuresofaccuracy.Withthesamerationale,ameta-analysisoftheperformanceofthesecondarystructurepredictionalgorithmsindicatesthatexistingalgorithmictechniquescannotbefurtherimprovedbyjustaddingmorenon-homologoussequencestothetrainingsets.Theupperlimitforsecondarystructurepredictionisestimatedtobenomorethan70%and80%ofcorrectlypredictedresiduesforsinglesequencebasedmethodsandmultiplesequencebasedones,respectively.Therefore,weshouldconcentrateoureffortsonutilizingnewtechniquesforthedevelopmentofevenbetterscoringpredictors.
简介:摘要:近年来,加工制造行业为应对新型产品面世以及产品加工制造压力,开始着重研究技术创新问题。基于FDM 技术的3D 打印机控制技术的出现,不仅可缓解企业竞争压力,同时简化制造技术,缩短开发周期,促使企业可高效完成产品制造。本文基于FDM 技术概述3D 打印机总体设计,并围绕基于外轮廓线的自适应分层算法、改进的分形扫描方法打印关键算法进行实例验证,对比打印质量以及打印时间,分析两种关键算法的可行性。