简介：基于在国际软件确定基准点标准组(ISBSG)仓库包含的数据的实验分析，这篇论文基于工程努力论述软件工程计划持续时间模型。持续时间模型为全部数据集并且为为个人计算机开发的工程的子集被造，中间范围并且大型机平台。持续时间模型也为比努力并且为要求努力的超过400人小时的工程的400人小时要求少数的工程被构造。作为第二个独立变量增加分配资源的最大的数字解释持续时间也被分析的实用性。从在功能的功能的尺寸削尖的工程直接造持续时间模型的机会也被调查。电子增补材料这件物品(doi:10.1007/s11390-007-9051-5)的联机版本contatins增补材料，它对授权用户可得到。

简介：Polygonalmodelsarepopularrepresentationsof3Dobjects.Theuseofpolygonalmodelsincomputationalapplicationsoftenrequiresamodeltoproperlybounda3Dsolid.Thatis,thepolygonalmodelneedstobeclosed,manifold,andfreeofself-intersections.Thispapersurveysasizeableliteratureforrepairingmodelsthatdonotsatisfythiscriteria,focusingoncategorizingthembytheirmethodologyandcapability.Wehopetoofferpointerstofurtherreadingsforresearchersandpractitioners,andsuggestionsofpromisingdirectionsforfutureresearchendeavors.

简介：Researchersoftensummarizetheirworkintheformofscientificposters.Postersprovideacoherentandefficientwaytoconveycoreideasexpressedinscientificpapers.Generatingagoodscientificposter,however,isacomplexandtime-consumingcognitivetask,sincesuchpostersneedtobereadable,informative,andvisuallyaesthetic.Inthispaper,forthefirsttime,westudythechallengingproblemoflearningtogeneratepostersfromscientificpapers.Tothisend,adata-drivenframework,whichutilizesgraphicalmodels,isproposed.Specifically,givencontenttodisplay,thekeyelementsofagoodposter,includingattributesofeachpanelandarrangementsofgraphicalelements,arelearnedandinferredfromdata.Duringtheinferencestage,themaximumaposterior(MAP)estimationframeworkisemployedtoincorporatesomedesignprinciples.Inordertobridgethegapbetweenpanelattributesandthecompositionwithineachpanel,wealsoproposearecursivepagesplittingalgorithmtogeneratethepanellayoutforaposter.Tolearnandvalidateourmodel,wecollectandreleaseanewbenchmarkdataset,calledNJU-FudanPaper-Posterdataset,whichconsistsofscientificpapersandcorrespondingposterswithexhaustivelylabelledpanelsandattributes.Qualitativeandquantitativeresultsindicatetheeffectivenessofourapproach.

简介：Visitingtrianglesthatconformadigitalterrainmodelisacoreoperationinanumberoffieldslikeanimationandvideogamesorgeneratingprofiles,cross-sections,andcontoursincivilengineering.Perfornfingthevisitinanefficientmannerisanissuespeciallywhentheoutputofthetraversaldependsinsomewayonadditionalparametersorinformationchangingovertime,forexample,amovingpointofview.Inthisworkwereportasetofrulesthat,givenadigitalterrainmodeldefinedoveraregulargridandanarbitrarypointofviewoutsidetheterrain,defineatotalback-to-frontorderinthesetofdigitalterrainmodeltriangleswithrespecttothepoint.Thesetofrulesisminimal,completeandcorrect.Toassesshowtherulesperform,wehaveimplementedaCPU-basedalgorithmforrealisticallyrenderingheightfieldsdefinedoverregulargrids.Thealgorithmdoesnotmakeuseofthez-bufferorshadersfeaturedbyourgraphicscard.Weshowhowouralgorithmisimplementedandshowvisualresultsobtainedfromsyntheticandrealdata.Wefurtherdiscussthealgorithmperformancewithrespecttotwoalgorithms：anaivealgorithmthatvisitstrianglesaccordingtogridindicesanddoesnotsolvethehiddenlineproblem,andthez-bufferprovidedbythegraphicscardfeaturedbyourcomputer.Ouralgorithmallowsreal-timeinteractionwhenthepointofviewarbitrarilymovesin3Dspaceandweshowthatitsperformanceisasgoodasthatofthez-buffergraphicscard.

简介：参量的软件努力评价模型通常由仅仅一个单个数学关系式组成。与从异构的工程包含数据的软件仓库的来临，模型的这些类型受不了差的调整和预兆的精确性。减轻这个问题的一个可能的方法是通过根据不同参数历史的工程数据集划分成称为分区的潜水艇数据集获得的一套数学方程的使用。接着，分区被划分成为更精确的模型用作一个工具的簇。在这篇论文，我们用一个公开可得到的仓库通过案例研究描述如此的途径的过程，工具和结果，ISBSG。没有让评价处理使用一个单个评价模型的更多建筑群，结果作为存在单个表示的模型的延期建议这种技术的足够。支持这个过程的一个工具也被介绍。电子增补材料这篇文章(doi:10.1007/s11390-007-9043-5)的联机版本contatins增补材料，它对授权用户可得到。