简介：ＥＸＴＲＥＭＥＰＯＩＮＴＲＥＳＵＬＴＳＦＯＲＳＴＲＩＣＴＰＯＳＩＴＩＶＥＲＥＡＬＮＥＳＳＯＦＴＲＡＮＳＦＥＲＦＵＮＣＴＩＯＮＦＡＭＩＬＩＥＳＷＡＮＧＬｏｎｇ；ＨＵＡＮＧＬｉｎ（ＤｏｐａｒｔｍｅｎｔｏｆＭｅｃｈａｎｉｃｓ，ＰｅｋｉｎｇＵｎｉｖｅｒｓｉｔ...

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简介：ThisinvestigationpresentstheGreenfunctionsforadecagonalquasicrystallinematerialwithaparabolicboundarysubjecttoalineforceandalinedislocationbymeansofthecomplexvariablemethod.ThesurfaceGreenfunctionsaretreatedasaspecialcase,andtheexplicitexpressionsofdisplacementsandhoopstressattheparabolicboundaryarealsogiven.Finally,thestressesanddisplacementsinducedbyaphononlineforceactingattheoriginofthelowerhalf-spacearepresented.

简介：Structuraloptimizationforcrashworthinesscriteriaisofparticularsignificanceespeciallyatearlystageofdesign.ThecomparativestudyofKrigingandradialbasisfunctionnetwork(RBFN)wasperformedinordertoimprovethecrashworthinesseffectsofhoneycomb.ImprovingthecrashworthinesscharacteristicofhoneycombwasachievedusingLS-OPTanddomainreductionstrategy.Thisoptimizationisperformedonthebasisofvalidatednumericalsimulationtoestablishtheapproximatedmodeltoillustratetherelationshipbetweentheresponsesanddesignvariables.TheresultsshowedthatKrigingmeta-modelisexcelledinaccuracy,robustnessandefficiencycomparedtoradialbasisfunction(RBF)andcrashworthinesscharacteristicofhoneycombisimprovedby4%.

简介：Inthispaper,byusingtheexplicitexpressionofthekernelofthecubicsplineinterpolation,theoptimalerrorboundsforthecubicsplineinterpolationoflowersoomthfunctionsareobtained.

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简介：Aim:ToevaluatetheantifertilityeffectofAlstoniascholarisbarkextractinmalerats.Methods:InmaleWistarratsAlstoniascholarisbarkextractwasgivenbyoralrouteatadoseof200mg/dayfor60days,Thefertilityandtesticularfunctionwereassessedbymatingtests,spermmotility,spermconcentration,biochemicalindicesandtesticularcellpopulationdynamics.Results:Oralfeedingwiththeextractatadoseof200mg/dayfortheperiodof60daysdidnotcausebodyweightloss,whiletheweightsoftestes,epididymides,seminalvesicleandventralprostateweresignificantlyreduced.Theproductionofstep-19spermatidswasreducedby79.6%intreatedrats.Thepopu-lationofpreleptoteneandpachytenespermatocytesweredecrasedby61.9%and60.1%,respectively.Spematogo-niaandSertolicellpopulationwerealsoaffected.TheseminiferoustubuleandLeydigcellnuclearareawerereducedsignificantly(P<0.01)whencomparedtothecontrols..Reducedspermcountandmotilityyesultedinatotalsupprs-sionoffertility.Asignificantfallintheproteinandsialicacidcontentofthetestes,epididymides,seminalvesicleandventralprostateaswellasglycogencontentoftesteswerealsonoticed.Thefructosecontentintheseminalvesiclewasloweredwhereasthetesticularcholesterolwaselevatedascomparedwiththecontrols.Thefollowingcom-poundswereobtainedfromtheextractwithchromatographicseparationoverSi-gelcolumn;α-amyrin,β-amyrin,lupiolacetate,venenative,rhazineandyohimbine,Conclusion:Atthedoselevelemployed,Alstoniascholarisbarkextracthasasignificantantifertilityeffectinmalerast;theprimarysiteofactionmaybepostmeioticgermcells(Step19spermatids).

简介：在海底部是几乎扁平、随机不平的薄层的假设下面，为底部回响的一个空间关联模型被构造。在高信号噪音比率，空间关联函数的阶段是在二个水中听音器之间的声波数字和垂直向量的产品。在一架有名无实地水平的飞机，转动和沥青导致在水中听音器之间的垂直向量。然后，包括转动，沥青和空间关联功能的阶段的一个方程被发现。如果一个平行四边形能被3个水中听音器构造，它到对角线的面积的比率不比波长的一半小，滚动并且投球能被获得经分解或旁边最佳的方法。然而，因为阶段歧义，转动和沥青的范围被限制。用菲希尔信息矩阵，Cramer-Rao更低的界限被获得。从计算机模拟和海测试数据的结果证明方法的可行性。

简介：在这份报纸，我们在LINEX损失功能下面考虑continuousdistribution功能的评价的问题。最好的不变的评估者被获得，是为任何样品尺寸n≥的得最高分的战略的andproved1。

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简介：这份报纸为numberresolved主人方程的推导论述波浪功能途径的全面评论，在mesoscopic系统为对运输和测量的描述使用。评论包含重要修正案，澄清在主人方程和他们的有效性的推导的微妙的点。这在这个题目上完成更早的工作。推导不假定弱结合，这被表明环境和水库，而是需要仅仅高偏导状况。这个条件为Markovian主人方程的有效性是很必要的，广泛地为对不同物理过程的现象学的描述使用。

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简介：为最大的multilinear考尔德？

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简介：在这份报纸，我们调查为剩余进程的打折的惩罚功能由piecewise描述了的Gerber-Shiu确定的Markov进程(PDMP).We导出一个不可分的方程因为Gerber-Shiu打折惩罚功能，并且当起始的剩余是零时，获得准确解决方案。Dickson公式也被概括到现在的剩余过程。关键词Gerber-Shiu打折惩罚功能-piecewise确定的Markov过程-最终的毁灭概率-Volterra不可分的方程先生(2000)题目分类91B30-62P20由中国的国家自然科学基础支持了(资助Nos.10926161，10901086，10871102)，2007CB814905和研究为高等教育的博士程序资助的中国(973程序)的国家基本研究节目

简介：Theequationofstressintensityfactors(SIF)ofinternallypressurizedthick-walledcylinderwasusedasthereferencecase.SIFequationofrotatingthick-walledcylindercontainingaradialcrackalongtheinternalborewaspresentedinweightfunctionmethod.Theweightfumctionformulaswereworkedoutandcanbeusedforallkindsofdepthofcracks,rotatingspeed,material,sizeofthick-walledcylindertocalculatethestressintensityfactors.Theresultsindicatedthevalidityandeffectivenessoftheseformulas.Meanwhile,therulesofthestressintensityfactorsinrotatingthick-walledcylinderwiththechangeofcrackdepthsandtheratioofouterradiustoinnerradiuswerestudied.Thestudiesarevaluabletoengineeringapplication.

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简介：Thediscoveryofexcitationfunctionfluctuationindissipativehearyioncollisions(DHIC)isasimportantasthediscoveryofDHICitself.ManyquantitativeinterpretationofDHICdataonlyarerestrictedtothedeseriptionoftheenergyaverageddifferentialcrosssections.However,thedescriptionofphysicalsystemsshouldinvolveboththeanalysisofaveragedvaluesandfluctuationsofobservables.Thephenomenonofexcitation