简介：ORM的全称是ObjectRelationalMapping，即对象关系映射。它的实质就是将关系数据(库)中的业务数据用对象的形式表示出来，并通过面向对象(Object—Oriented)的方式将这些对象组织起来，实现系统业务逻辑的过程。在ORM过程中最重要的概念是映射(Mapping)，通过这种映射可以使业务对象与数据库分离。从面向对象来说，数据库不应该和业务逻辑绑定到一起，ORM则起到这样的分离作用，使数据库层透明，开发人员真正地面向对象。图1简单说明了ORM在多层系统架构中的这个作用。

简介：WepresentaninitialstudyoftheobjectfeaturesofOracle9i-thefirstofthemarket-leadingobject-relationaldatabasesystemsthatsupportsatrueobjectmodelontheserversideaswellasanODMG-styleC++languagebindingontheclientside.WediscusshowthesefeaturescanbeusedtoprovidepersistentobjectstorageintheHEPenvironment.

简介：INTRODUCTIONFecalcoliformhasbeenusedasanindicatorofwaterpollutionforaboutacentury.Recently,Standrigeetal(1981),Reasoneretal(1979)andPageletal.(1982)improved,withgoodresults,thebioassymethodsforfecalcoliformindrinkingwaterandwastewater.Toprovideamethodappli-

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简介：<正>Manypeoplehurttheirbackswhentheytrytoliftheavythingsfromthefloor.Itiseasytohurtyourbackmuscleswhenyoupickupaheavyobject.However,thereisacorrectwaytoliftthingsfromthefloor.Ifyoupickupbigorheavyobjectscorrectly,youprobablywillnothurtyourback.

简介：TheCMSOOreconstructionprogram-ORCA-hasbeenusedsince1999toproducelargesamplesofreconstructedMonte-Carloeventsfordetectoroptimization,triggerandphysicsstudies,TheeventsarestoredinseveralObjectivityfederationsatCERN,intheUS,Italyandothercountries.ToperformtheirstudiesphysicistsusedifferenteventsamplesrangingfromcompletedatasetsofTBytesizetoonlyafeweventsoutofthesedatasets.WedescribetheimplementationoftheserequirementsintheORCAsoftwareandthewaycollctionsofeventsareaccessedforreading,writingorcopying.

简介：TheBaBerexperimentstoresitsdatainanObjectorientedfederateddatabasesuppliedbyObjectivity/DB(tm),thisdatabaseissurrently350TBinsizeandisexpectedtoincreaseconsiderablyastheexperimentmatures.Managementofthisdatabaserequirescarefulplanningandspecializedtoolsinordertomakethedataavailabletophysicistsinanefficientandtimelymanner,WediscusstheoperationalissuesandmanagementtoolsthatweredevelopedduringthepreviousruntodealwiththisvastquantityofdataatSLAC.

简介：基于J2EE多层体系结构的数据持久层几种主流的解决方案:使用SQL/JDBC在业务类中硬编码、使用SQL/JDBC在存储过程或者单独的数据类中硬编码、CMP容器管理持久实体Bean、JDO对象-关系/映射模式(ORM模式)进行了简要介绍,分析了数据持久层的ORM设计模式,包括决定ORM实现工具设计标准的四个级别,其中完全的对象映射支持组合、继承、多态和'可达的持续性'等复杂的对象模型,本文对完全的对象映射的功能进行了阐述.最后,作为ORM例证,介绍了一个Java对象持久层轻量级封装框架Hibernate,探讨了它在实际应用中的技术优势.

简介：部件相关性是一项重要软件措施。它是直接与软件可理解性，可维护性，和可重用性有关。在描述部件相关性的二个重要参数是在二个部件之间联合的类型和依赖部件的类型。取决于联合和依赖部件的类型的不同类型，能部件维护和部件复用上有不同效果。在这篇论文，我们把依赖部件划分成三种类型。我们然后分类各种各样的部件相关性并且在维护和复用上分析他们的效果。基于分类，我们在场一个相关性度量标准并且在11个公开源码的Java部件上验证它。我们的学习证明强壮的关联在再使用部件的部件和努力的相关性的测量之间存在。这显示部件相关性和建议度量标准的分类能进一步被用来代表另外的外部软件质量因素。电子增补材料这篇文章(doi:10.1007/s11390-007-9058-y)的联机版本contatins增补材料，它对授权用户可得到。

简介：Ghostimagingcouldbeusedtomakeaquickidentificationoforthogonalobjectsbymeansofphotocurrentcorrelationmeasurements.Inthispaper,weextendthemethodtoidentifynonorthogonalobjects.Inthemethod,anobjectisilluminatedbyonephotonfromanentangledpair,andtheotheroneisdiffractedintoaparticulardirectionbyapre-establishedmultiple-exposurehologramintheidlerarm.Bythecorrelationmeasurements,thenonorthogonalobjectinthesignalarmcouldbediscriminatedwithinaveryshorttime.Theconstraintsfortheidentificationofnonorthogonalobjectsarepresented,whichshowthatthenonorthogonalobjectscanbediscriminatedwhentheoverlappingportionbetweenanytwoobjectsislessthanhalfofalltheobjectsintheset.Thenumericalsimulationsfurtherverifytheresult.

简介：Aviewinobjectorienteddatabasescorrespondstovirtualschemawithrestructuredgeneralizationanddecompositionhierarchies,Numbersofviewcreationmethodologieshavebeenproposed.Amajordrawbackofexistingmethodologiesisthattheydonotmaintaintheclosureproperty.Thatis,theresultofaquerydoesnothavethesamesemanticsasembodiedintheobjectorienteddatamodel.Teherefore,thispaperpresentsaviewcreationmethodologythatderivesaclassinresponsetoauser'squery,integratesderivedclassinglobalschema(i.e.,considerstheproblemofclassesmovinginclasshierarchy)andselectstherequiredclassesfromglobalschematocreatetheviewforuser'squery.Novelideaofviewcreationincludes:(a)anobjectalgebraforclassderivationandcustomization(wherethederivedclassesintermsofobjectinstancesandprocedure/methodsarestudied),(b)maintenanceofclosureproperty,and(c)classificationalgorithmwhichprovidesmechanismtodealwiththeproblemofaclassmovinginaclasshierarchy.

简介：Compressivesensingisarevolutionaryideaproposedrecentlytoachievemuchlowersamplingrateforsignals.Intheimageapplicationwithlimitedresourcesthecameradatacanbestoredandprocessedincompressedform.Analgorithmformovingobjectandregiondetectioninvideousingacompressivesamplingisdeveloped.Thealgorithmestimatesmotioninformationofthemovingobjectandregionsinthevideofromthecompressivemeasurementsofthecurrentimageandbackgroundscene.Thealgorithmdoesnotperforminversecompressiveoperationtoobtaintheactualpixelsofthecurrentimagenortheestimatedbackground.Thisleadstoacomputationallyefficientmethodandasystemcomparedwiththeexistingmotionestimationmethods.Theexperimentalresultsshowthatthesamplingratecanreduceto25%withoutsacrificingperformance.

简介：Thispaperproposesanewmethodbasedonprincipalcomponentanalysistofindthedirectionofanobjectinanypose.Experimentsshowthatthismethodisfast,canbeappliedtoobjectswithanypixeldistributionandkeeptheoriginalpropertiesofobjectsinvariant.ItisanewapplicationofPCAinimageanalysis.

简介：Thispaperintroducesanoveltechniqueforobjectdetectionusinggeneticalgorithmsandmorphologicalprocessing.Themethodemploysakindofobjectorientedstructureelement,whichisderivedbygeneticalgorithms.Thepopulationofmorphologicalfiltersisiterativelyevaluatedaccordingtoastatisticalperformanceindexcorrespondingtoobjectextractionability,andevolvesintoanoptimalstructuringelementusingtheevolutionprinciplesofgeneticsearch.Experimentalresultsofroadextractionfromhighresolutionsatelliteimagesarepresentedtoillustratethemeritandfeasibilityoftheproposedmethod.

简介：Momentshavebeenusedinallsortsofobjectclassificationsystemsbasedonimage.TherearelotsofmomentsstudiedbymanyresearchersintheareaofobjectclassificationandoneofthemostpreferencemomentsistheZernikemoment.Inthispaper,theperformanceofobjectclassificationusingtheZernikemomenthasbeenexplored.Theclassifierbasedonneuralnetworkshasbeenusedinthisstudy.Theresultsindicatethebestperformanceinidentifyingtheaggregateisat91.4%withatenordersoftheZernikemoment.ThisencouragingresulthasshownthattheZernikemomentisasuitablemomenttobeusedasafeatureofobjectclassificationsystems.

简介：本文主要通过叙述在人力资源信息系统开发中从传统的SQL语句完成业务逻辑层到引入ORM方法来完成业务逻辑层,通过引入ORM方法来优化程序设计。

简介：Theimpropercultivationofcommercialplantation,whichisamanagementactivitywiththepropertiesofeconomy,willleadtoenvironmentlossessuchaslanddegradation,soilerosion,pestsanddiseases.Environmentalcostiseasilyneglectedbyexecutives,however,itexistsactually.Thevariety,intersectingandoverlappingofenvironmentlossesdecidetheboundaryofevaluationandthenecessityofindicesonenvironmentalcost.Theresearchanalyzesthecharacteristicsanddisciplinariansofenvi...

简介：FractionalBrownianmotion,continuouseverywhereanddifferentiablenowhere,offersaconvenientmodelingforirregularnonstationarystochasticprocesseswithlong-termdependenciesandpowerlawbehaviorofspectrumoverwiderangesoffrequencies.Itshowshighcorrelationatcoasescaleandvariesslightlyatfinescale,whichissuitableforandsuccessfulindescribingandmodelingnaturalscenes.Ontheotherhand,man-madeobjectscanbeconstructivelywelldescribedbyusingasetofregularsimpleshapeprimitivessuchasline,cylinder,etc.andarefreeoffractal.Basedonthedifference,weprovideamethodtodiscriminateman-madeobjectsfromnaturalscenes.Experimentsareusedtodemonstratedthegoodefficiencyofthedevelopedtechnique.

简介：FractionalBrownianmotion,continuouseverywhereanddifferentiablenowhere,offersaconvenientmodelingforirregularnonstationarystochasticprocesseswithlong-termdependenciesandpowerlawbehaviorofspectrumoverwiderangesoffrequencies.Itshowshighcorrelationatcoarsescaleandvariesslightlyatfinescale,whichissuitableforandsuccessfulindescribingandmodelingnaturalscenes.Ontheotherhand,man-madeobjectscanbeconstructivelywelldescribedbyusingasetofregularsimpleshapeprimitivessuchasline,cylinder,etc.andarefreeoffractal.Basedonthedifference,amethodtodiscriminateman-madeobjectsfromnaturalscenesisprovided.Experimentsareusedtodemonstratethegoodefficiencyofdevelopedtechnique.

简介：ThereconstructionandsubsequentparticleidentificationisachallengeinacomplexandahighluminosityenvironmentsuchasthoseexpectedintheATLASdetectorattheLHC.TheATLASsoftwarehaschosentheobjectorientedparadigmandhasrecentlymigratedmuchofitssoftwarecomponentsdevelopedearlierusingproceduralprogramminglanguages.Thenewsoftware,whichemphasizesontheseparationbetweenalgorthmsanddataobjects,hasbeensuccessfullyintegratedinthebroaderATLASframework.Wewillpresentastatusreportofthereconstructionsoftwaresummarizingtheexperiencesgainedinthemigrationofseveralsoftwarecomponents.Wewillexaminesomeofthecomponentsofthecalorimetersoftwaredesign,whichincludesimulationofreal-timedetectoreffectsandonlineenvironment,andstrategiesdeployedforidentificationofparticles.