简介：ThispapercarriesouttheFirstprinciplescalculationofthecrystalstructures(zincblende(B3)androcksalt(B1))andphasetransitionofboronarsenic(BAs)basedonthedensity-functionaltheory.Usingtherelationbetweenenthalpyandpressure,itfindsthatthetransitionphasefromtheB3structuraltotheB1structuraloccursatthepressureof113.42GPa.ThentheelasticconstantsC11,C12,C44,bulkmodulus,shearmodulus,Youngmodulus,anisotropyfactor,KleinmanparameterandPoissonratioarediscussedindetailfortwopolymorphsofBAs.TheresultsofthestructuralparametersandelasticpropertiesinB3structureareingoodagreementwiththeavailabletheoreticalandexperimentalvalues.

简介：由二块橡皮组成的矩形的围场的结构的声学的联合特征支持了灵活盘子，四个僵硬盘子被分析。就在盘子和洞之间的完整的联合而言的一般明确的表达被使用Hamiltonian功能和Rayleigh夸耀方法开发。借助于沿着灵活盘子的边界的人工的弹簧的连续分布，许多边界条件和结构关节条件被考虑。为了表明分析模型，的有效性，在洞和板速度的健全压力的回答被得出。分析结果与Kim的试验性的结果与一致很好。结果是令人满意的。最后，结构颤动上的分析结果和在洞内的健全的地是presented.These结果显示联合联合结构是相对弱的因此内部洞声音被控制旁边直接激动的板，和翻译僵硬多于旋转僵硬影响声音。

简介：ObjectiveStudies证明代替的midclavicular破裂的钉的有弹性的稳定的intramedullary(ESIN)有优秀结果，以及高复杂并发症率和特定的问题。目的fractures.MethodsTotally是讨论midshaft的ESIN锁骨的60个合格病人(年老的18-63年)被使随机化到在2007年1月和2008年5月之间的ESIN组或非起作用的组。锁骨的弄短在损伤和骨状的巩固以后被测量。X光线照相术的联合和复杂并发症被估计。包括经常的肩膀分数和手臂，肩膀和手(破折号)的残疾的功能分析得分在15月的follow-up.ResultsESIN导致了一signifcantly更短的时间到联合以后，被执行，特别为简单破裂。在ESIN组，所有病人得到了骨折联合，5个盒子有中间的皮激怒，因为，1个病人需要修订外科植入失败。在nonoperative组，有3个不属于工会的盒子，2征兆的malunions发展了要求校正截骨术。在在intramedullary稳定以后的15个月，在ESIN组的病人是对肩膀和全面结果的外观满意的更多，并且他们从traumatic以后的大改进有益于很多锁骨的弄短。而且，破折号分数更低，经常的分数与非起作用的group.ConclusionESIN相对照是显著地更高的是有更低的复杂并发症率，到每日的活动的更快的回来，优秀化妆品和更好功能的结果的一种安全最低限度地侵略的外科的技术，为对待中间柄的锁骨的破裂的锁骨的长度的恢复，导致高全面的满足，它能作为板固定或mid-shaf的nonoperative治疗的一种选择是问候

简介：在这份报纸，我们以光线参数导出SS波浪思考系数和S波浪光线橡皮阻抗(SREI)的表示的近似。SREI能被S波浪发生角度或P波浪思考角度表示，分别地叫作SREIS和SREIP。我们用从真实木头大小导出的有弹性的模型的学习证明SREIP比SREIS和常规S波浪为岩性学和液体辨别有更好的能力橡皮阻抗(SEI)。我们从Castagna和史密斯(1994)用25组样品评估SREIP可行性。每个样品组被使用页岩构造，盐水沙，并且煤气沙。理论评估也显示全体的那SREIP事件角度比常规液体指示物对液体更敏感。真实地震数据申请也显示出角度计算了高效地使用P波浪和S波浪阻抗罐头的全体的那SREIP描绘紧密煤气沙。

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简介：Non-singularfictitiousboundaryintegralequationsfororthotropicelasticplaneproblemswerededucedaccordingtoboundaryconditionsbythetechniquesofsingularpoints-outside-domain.Thentheunknownfictitiousloadfunctionsalongthefictitiousboundarywereexpressedintermsofbasicsplinefunctions,andtheboundary-segment-leastsquaresmethodwasproposedtoeliminatetheboundaryresiduesobtained.Bytheabovesteps,numericalsolutionstotheintegralequationscanbeachieved.Numericalexamplesaregiventoshowtheaccuracyandefficiencyoftheproposedmethod.

简介：我们为预言有弹性的moduli开发了一个大形变模型oftwo维的细胞的材料。这个大形变模型基于细胞的材料的房间的使倾向的成员的大挠度。使倾向的成员，代表性的结构的紧张和二的有弹性的moduli的偏转--维的细胞的材料用不完全的椭圆形的积分被表示。试验性的结果证明这些有弹性的moduli不再是全体的常数变丑，但是与thes火车显著地变化。比较在这个大形变模型之间被做，小变丑模特儿由吉布森和Ashby求婚了。

简介：Out-of-planebucklingofanisotropicelasticplatesubjectedtoasimpleshearisinvestigated.Fromexact3-Dequilibriumconditionsofanisotropicelasticbodywithaplaneofelasticsymmetryatcriticalconfiguration,theequtionforbucklingdirection(bucklingwavedirection)parameterisderivedandtheshapefunctionsofpossiblebucklingmodesareobtained.Thetractionfreeboundaryconditionswhichmustholdontheupperandlowersurfacesofplateleadtoalineareigenvalueproblemwhosenontrivialsolutionsarejustthepossiblebucklingmodesfortheplate.Thebucklingconditionsforbothflexuralandbarrelingmodesarepresented.Asaparticularexampleofbucklingofanisotropicelasticplate,thebucklingofanorthotropicelasticplate,whichissubjectedtosimpleshearalongadirectionmakinganarbitraryangleofθwithrespecttoanelasticprincipalaxisofmaterials,isanalyzed.Thebucklingdirectionvarieswithθandthecriticalamountofshear.Thenumericalresultsshowthatonlytheflexuralmodecanindeedexist.

简介：Aunifiedtheoryforcalculatingthenoiseradiationofaninfiniteelasticplateexcitedbytheturbulentboundarylayerpressurefluctuationsispresented.Usingthewavenumberfrequencytransferfunctiontodes-cribethewholesystem,consistingoftheplateandtheliquidloading,ageneralexprossionofthecrossspectrumwasderiyed.Itisanintegralinthecomplexwavenumberplaneandleadstoasumoftheresiduesatthepolesoftwotypes.Onepoleintroducedbytheconvectiveridgeofthepressurefluctuationsyieldsadirecttransfercomponent,whichisanevanescentwaveinliquidbecausethepoleliesinthehighwavenumberregion.Theotherpolesintroducedbythetransferfunctionofstructureproducetheradiationfieldcomponentswiththeresonancemodesofaliq-uidloadedplate.ThepolepositionsandtheirresiduescanbecomputedapproximatelybyuseoftheResonanceScatteringTheory.Forthecaseofhydrodynamicnoise,wheretherangeofthefrequency-thicknessprod-uctofinterestisrelativelyl

简介：Thestructural,electronic,andelasticpropertiesofZnSe1-xSxforthezincblendestructureshavebeenstudiedbyusingthedensityfunctionaltheory.Thecalculationswereperformedusingtheplanewavepseudopotentialmethod,asimplementedinQuantumESPRESSO.Theexchange-correlationpotentialistreatedwiththelocaldensityapproximationpz-LDAfortheseproperties.Moreover,LDA+Uapproximationisemployedtotreatthe"d"orbitalelectronsproperly.AcomparativestudyofthebandgapcalculatedwithinbothLDAandLDA+Uschemesispresented.Theanalysisofresultsshowconsiderableimprovementinthecalculationofbandgap.Theinclusionofcompositionaldisorderincreasesthevaluesofallelasticconstants.Inthisstudy,itisfoundthatelasticconstantsC11,C12,andC44aremainlyinfluencedbythecompositionaldisorder.Theobtainedresultsareingoodagreementwithliterature.

简介：ＯＮＴＨＥＦＵＮＤＡＭＥＮＴＡＬＰＲＯＢＬＥＭＦＯＲＡＮＩＮＦＩＮＩＴＥＥＬＡＳＴＩＣＰＬＡＮＥＢＯＮＤＥＤＢＹＤＩＦＦＥＲＥＮＴＡＮＩＳＯＴＲＯＰＩＣＭＡＴＥＲＩＡＬＳＷＩＴＨＣＲＡＣＫＳＺＨＥＮＧＫＥ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃ...

简介：州空间的方法被采用评估形式的参数机能上地分级，magneto-electro-elastic，和multilayered盘子。基于机能上地分级的材料的性质是指数的假设，作为州的变量拿结构的排水量和压力的结构的颤动的州的方程被导出。自然频率和形式的形状基于在这篇论文给的州的方程和边界条件的一般答案被计算。有弹性的排水量上的机能上地分级的指数的因素的影响，电，并且结构的磁场被与不同的叠假定一个三明治板模型讨论序列。

简介：Thevibrationalfrequencyanalysisoffiniteelastictubefilledwithcompressibleviscousfluidhasreceivedplentyofattentioninrecentyears.Toapplyfrequencyanalysistodefectdetectionforexample,itisnecessarytoinvestigatethevibrationalbehaviorunderappropriateboundaryconditions.Inthispaper,wepresentadetailedtheoreticalstudyofthethreedimensionalmodalanalysisofcompressiblefluidwithinanelasticcylinder.Thedispersionequationsofflexural,torsionalandlongitudinalmodesarederivedbyelastodynamictheoryandtheunsteadyStokesequation.ThesymbolicsoftwareMathematicaisusedinordertofindthecoupledvibrationfrequencies.Thedispersionequationisdeducedandanalyticallysolved.Thefiniteelementresultsarecomparedwiththepresentmethodforvalidationandanacceptablematchbetweenthemareobtained.

简介：Inlandmark-basedimageregistration,estimatingthelandmarkcorrespondenceplaysanimportantrole.Inthisletter,anovellandmarkcorrespondenceestimationtechniqueusingmeanshiftalgorithmisproposed.Imagecornerpointsaredetectedaslandmarksandmeanshiftiterationsareadoptedtofindthemostprobablecorrespondingpointpositionsintwoimages.Mutualinformationbetweenintensityoftwolocalregionsiscomputedtoeliminatemis-matchingpoints.Multi-levelestimation(MLE)techniqueisproposedtoimprovethestabilityofcorrespondingestimation.Experimentsshowthattheprecisioninlocationofcorrespondencelandmarksisexact.Theproposedtechniqueisshowntobefeasibleandrapidintheexperimentsofvariousmono-modalmedicalimages.

简介：Thispaperisconcernedwiththethermoelasticbehaviorsofanelasticmediumwithvariablethermalmaterialproperties.Theproblemisinthecontextoffractionalorderheatconduction.Thegoverningequationswithvariablethermalpropertieswereestablishedbymeansofthefractionalordercalculus.Theproblemofahalf-spaceformedofanelasticmediumwithvariablethermalmaterialpropertieswassolved,andasymptoticsolutionsinducedbyasuddentemperatureriseontheboundarywereobtainedbyapplyinganasymptoticapproach.Thepropagationsofthermoelasticwaveandthermalwave,aswellasthedistributionsofdisplacement,temperatureandstresseswereobtainedandplotted.Variationsinthedistributionswithdifferentvaluesoffractionalorderparameterwerediscussed.Theresultswerecomparedwiththoseobtainedfromthecaseofconstantmaterialpropertiestoevaluatetheeffectsofvariablematerialpropertiesonthermoelasticbehaviors.

简介：这份报纸使描述有弹性的字符串的一个3-dimensional网络的颤动的非线性的波浪方程的一个系统担心。作者导出方程和适当节的条件，决定平衡解决方案，并且，由使用quasilinear的方法夸张系统，证明那因为树联网天赋起始，边界值问题有古典解决方案在拉长的平衡解决方案的邻居存在。然后，这的本地可控制性近联网在某个指定时间间隔的配置被证明的如此的平衡。最后，它被证明那，给二不同平衡状态令人满意某些条件，在足够地大的时间间隔上在第二平衡的一位合适的邻居在一平衡的一位足够小的邻居从状态控制网络到任何状态是可能的。

简介：Inordertoeliminatedisplacementandelasticdeformationbetweenimagesofadjacentframesincourseof3Dultrasonicimagereconstruction,elasticregistrationbasedonskeletonfeaturewasadoptinthispaper.Anewautomaticallyskeletontrackingextractalgorithmispresented,whichcanextractconnectedskeletontoexpressfigurefeature.Featurepointsofconnectedskeletonareextractedautomaticallybyaccountingtopicalcurvatureextremepointsseveraltimes.Initialregistrationisprocessedaccordingtobarycenterofskeleton.Whereafter,elasticregistrationbasedonradialbasisfunctionareprocessedaccordingtofeaturepointsofskeleton.Resultofexampledemonstratethataccordingtotraditionalrigidregistration,elasticregistrationbasedonskeletonfeatureretainnaturaldifferenceinshapefororgan'sdifferentpart,andeliminateslightelasticdeformationbetweenframescausedbyimageobtainedprocesssimultaneously.Thisalgorithmhasahighpracticalvalueforimageregistrationincourseof3Dultrasoundimagereconstruction.

简介：TheeigenvalueproblemfortheHamiltonianoperatorassociatedwiththemathematicalmodelforthedeflectionofathinelasticplateisinvestigated.First,theproblemforarectangularplatewithsimplysupportededgesissolveddirectly.Then,thecompletenessoftheeigenfunctionsisproved,therebydemonstratingthefeasibilityofusingseparationofvariablestosolvetheproblem.Finally,thegeneralsolutionisobtainedbyusingtheprovedexpansiontheorem.

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简介：ThescatteringofLovewavesbyaninterfacecrackbetweenapiezoelectriclayerandanelas-ticsubstrateisinvestigatedbyusingtheintegraltransformandsingularintegralequationtechniques.Thedy-namicstressintensityfactorsoftheleftandtherightcracktipsaredetermined.Itisfoundfromnumericalcalculationthatthedynamicresponseofthesystemdependssignificantlyonthecrackconfiguration,thema-terialcombinationandthepropagatingdirectionoftheincidentwave.Itisexpectedthatspecifyinganappro-priatematerialcombinationmayretardthegrowthofthecrackforacertaincrackconfiguration.