简介:利率下跌债券价格就会上升, =$1.05/(1+5%) =$1.00 债券持有人会定期收到利息以及在到期时取回相等于债券面值的 金额,因此预期利率会调低的债券投资者应该投资于较长期的债券
简介:Rocksareheterogeneousfromthepointofmicrostructurewhichisofsignificancetotheirdynamicfailurebehavior.Boththecompressiveandtensilestrengthofrock-likematerialsisregardeddifferentfromthestaticstrength.Thepresentstudyadoptssmoothedparticlehydrodynamics(SPH)whichisavirtualparticlebasedmeshfreemethodtoinvestigatestrainrateeffectforheterogeneousbrittlematerials.TheSPHmethodiscapableofsimulatingrockfracture,freeofthemeshconstraintofthetraditionalFEMandFDMmodels.ApressuredependentJ-Hconstitutivemodelinvolvingheterogeneityisemployedinthenumericalmodeling.Theresultsshowthecompressivestrengthincreaseswiththeincreaseofstrainrateaswellasthetensilestrength,whichisimportanttotheengineeringdesign.
简介:relationship between bond price and interest rates. The, 债券价格与利率的关系,利率如何影响债券的价格
简介:TheArrheniuslawimpliesthatreactionrateisacontinuousfunctionoftemperature.However,thesteadylaminarflameletmodel(SLFM)doesnotexplicitlygivethisfunctionalrelationship.ThepresentstudyaddressesthisrelationintheSLFM.Itisfoundthatreactionrateisnotcontinuousinthemixture-fractionspace.Asaresult,theSLFMisunabletopredictlocalextinctionandreignition.Furthermore,weusetheunstablebranchofthe"S-curve"tofillthegapbetweensteadyburningbranchandextinctio...
简介:NanostructuredtitaniahavebeenintensivelyinvestigatedasanodematerialsofLi-ionbatteriesfortheirexcellenthighrateperformance.ThesizeeffectsofTiO2polymorphs(mainlyrutile,anataseandTiO2-B)ontheirelectrochemicalperformanceandthelatesteffortsinnanoengineeringtitaniaanodesthroughenhancingtheirionicorelectronictransportationorbotharereviewedinthiswork.Wesupposethatmicron-orsubmicronsizedporousstructuresassembledbyTiO2nanoparticles,nanowires/nanotubesornanosheetswithahighpercentageofexposinghighreactivefacetstogetherwithaconductivepercolatingnetworkareidealanodesnotonlyforhighratelithiumstoragebutalsoforhighpackingdensitiesoftheactivematerials.
简介:在这篇论文,我们调查模仿围住的前进的非线性的动力学的与vibro影响的敲击的钻的一个低维的模型。在影响在钻期间引起的粘住滑倒产生的Non-holonomity没能正确地经由古典技术被鉴别。没有non-holonomity的一个减少的模型被一个新州的变量,平均技术成功地被采用检测周期的运动的介绍导出。本地分叉被使用C-L方法直接介绍。沿着参数的不同选择的数字模拟和渗透的率分析被执行了探查非线性的行为和钻的系统的最佳的渗透率。关键词分叉-混乱-Non-holonomity-敲击的钻工程被中国(10872136和10932006)和EPSRC资助(GR/R85556)的国家自然科学基础支持。
简介:ThispapergivestheweightedLpconvergencerateestimationsoftheGruenwaldinterpolatorypolynomialsbasedonthezerosofChebyshevpolymomialsofthefirstkind,andprovesthattheorderoftheestimationsisoptimalforp≥1.
简介:Let{X,Xn;n≥1}beastrictlystationarysequenceofρ-mixingrandomvariableswithmeanzeroandfinitevariance,SetSn=∑^nk=1Xk,Mn=maxk≤n|Sk|,n≥1.Supposelimn→∞ES^2n/n=tα^2>0and^∞∑n=1ρ^2/d(2^n)<∞,whered=2,if-12(b+1),ifb≥0.Itisprovedthat,foranyb>-1,limε^2(b+1)ε→0^∞∑n=1(loglogn)^b/nlognP{Mn≥εσ√2nloglogn}=2/(b+1)√πГ(b+3/2)^∞∑k=0(-1)^k/(2k+1)^2b+2,whereГ(·)isaGammafunction.
简介:为了在萌芽能力(LTG)上调查低温度,有198根线的一张doublehaploid米饭(DH)人口源于与indicalineZhenshan97B混合的F_1的花药培养,长期的装饰用的梨树线AAV002863被用来构造连锁图with140SSR标记。在Zhenshan97B和AAV002863的萌芽率是79.7%和30.1%,当时inDH人口它在6天以后在15°C从0~100%。控制低温度germinabilitywere的量的特点loci(QTL)在染色体上识别了3和10。归因于QLTG-3和QLTG-10的观察phenotypic的百分比分别地是12.6%和12.9%。从Zhenshan97B的等位基因在qLTG-3区域增加了LTG,当时从在qLTG-10的AAV002863increasedtheLTG的等位基因区域。一个个epistatic相互作用在染色体上在loci之间被检测3和10。染色体10上的QTL主要效果也涉及epistaticinteraction。