简介:介绍了用HAJIF(X)软件进行线性屈曲分析的方法,包括屈曲分析的理论,屈曲分析特征值方程的推导,特征值问题的解法,屈曲分析的步骤,屈曲分析有限元数据的准备,随后,给出了几个例题,包含输入数据和计算结果,并同理论解作了比较,最后讨论了实际工程结构进行屈曲分析要注意的一些问题。
简介:1.IntrodnctionThispaperextendsthestudyofthesingularmatrixvariatebetadistributionofrank1[1]tothecaseofageneralrank.Astherelateddistributiontonormalsampling,thematrixvariatebetadistribution(alsocalledthemultivariatebetadistribution)hasbeenstudiedextens...
简介:句式组合是多乐句音乐结构中常见的结构现象。为了进一步认识西方传统音乐主题中的句式组合问题,选取了莫扎特钢琴奏鸣曲的主部主题为研究对象,在梳理其句式组合的基础上,提炼出3种组合原则:“重复”,“混搭”,“重复+混搭”。并以此3种组合原则为蓝本,结合常见的句式,对西方传统器乐主题写作中可能出现的句式组合进行汇总。通过以上研究,认为西方传统器乐主题中句式组合的特点有三:句式的选择最为自由;不同的句式组合对句数各有规定;乐句句尾的和声语汇比较固定。最后,又从音乐语言“统一性”和“多样性”辩证结合原理出发,对莫扎特3种主题句式组合原则作进一步剖析和解码。
简介:Aprobabilitydensityfunction(PDF)isderivedofbetadistributionwithbothλ3(skewness)andλ4(kurtosis)asparametersforweaklynonlinearwavesurfaceelevationbyuseofamethodrecentlyproposedbySrokosz.ThisPDFnotonlyhasasimplerformthanthewell-knownGram-CharlierSeriesPDFderivedbyLonguet-Higgins,butalsoovercomesanobviousshortcomingofthelatterthatwhentheseriesisunsuitablytruncated,theresultingPDFislocallynegative.TotestthederivedbetaPDF,laboratorialexperimentsofwindwavesareconducted.TheexperimentaldataindicatethatthetheoreticalrequirementsoftheparametersinthebetaPDFarefulfilled.TheexperimentalresultsshowthatthepresentPDFisinbetteragreementwiththemeasureddatathanthebetaPDFonlyincludingparameterλ3,andalsothantheGram-CharlierSeriesPDFtruncateduptothetermofH6.
简介:趋势科技近日在其网站上推出企业桌面安全解决方案趋势科技OfficeScan7.8beta版,该产品将随着WindowsVista的问世而为其提供防病毒和其他保护。WindowsVista是Windows客户端操作系统的下一代产品。趋势科技OfficeScan可以保护企业的WindowsVista计算机免遭病毒和恶意代码攻击,包括文件病毒、宏病毒和恶意间谍软件、JavaApplet以及ActiveX控制。面向WindowsVistabeta版的趋势科技OfficeScanbeta版是在2006年5月参加微软的技术采纳计划(TAP)最先推出的,现在可以通过趋势科技的公开网站立即下载OfficeScan7.8beta版。
简介:AbstractThalassemia, classified as the main types α- and β-thalassemia, is a single gene disorder resulting from globin chain synthesis impairment through the mutation or deletion of globin genes. The incidence of thalassemia is high worldwide, with high associated mortality. Therefore, treatment is important to improve patient outcomes. This paper reviews the current status of β-thalassemia major in China, including its epidemiology and treatment.
简介:ObjectivesToinvestigatetheeffectsoftestosteroneenanthate(TE)onserumlipidsandlipoproteinsmetabolismandtheexpressionofandrogenreceptor(AR),estrogenreceptorbeta(ER-β)andplateletderivedgrowthfactorbeta(PDGFR-β)inaorticvascularsmoothmuscletissues(VSMTs).MethodsFortyagedmaleratswererandomlydividedinto4groups,groupA(placebogroup),groupB(2.5mg/kgintramuscularinjectionofTEonceaweek),groupC(5.0mg/kgintramuscularinjectionofTEonceaweek),groupD(10.0mg,/kgintramuscularinjectionofTEonceaweek).Allanimalswerefedfreelyduring16-weektreatmentperiods.TheexpressionofAR,ER-βandPDGFR-βwerestudiedbyWesternbolt.ResultsAverageserumLDL-CwasloweringroupDthanthatingroupA(p<0.01).Comparedwiththeothergroups,averageserumTCwasalsoloweringroupD(p<0.05).ARexpressioninaorticvascularsmoothmuscletissuescouldberegulatedbyTE:99.50±21.74,125.38±28.68and101.98±15.42forTEconcentrationsat2.5mg/kg,5.0mg/kgand10.0mg/kg,respectively,theexpressionofER-βcouldberegulatedbyTE:92.34±18.68,47.72±18.12,82.13±23.50,andtheexpressionofPDGFR-βcouldberegulatedaswellbyTE:219.70±45.59,50.16±9.72,125.36±15.74(DataforAR,ER-βandPDGFR-βproteinbandintensitywereexpressedwithx±s,withcontrolgrouptakenas100).ConclusionsThisstudyindicatesthatandrogenshavesignificanteffectsonserumlipidsandlipoproteinmetabolism.Testosteroneenanthateat5.0mg/kgcanstimulatetheexpressionofAR,butinhibitetheexpressionofPDGFR.Testosteroneenanthateattheconcentrationsof5.0mg/kgand10.0mg/kgcaninhibitetheexpressionofER-β.
简介:Inthepresentpaper,weproposetheqanalogueofSza′sz-Beta-Stancuoperators.Byestimatethemoments,weestablishdirectresultsintermsofthemodulusofsmoothness.Investigatetherateofpoint-wiseconvergenceandweightedapproximationpropertiesoftheqoperators.Voronovskajatypetheoremisalsoobtained.Ourresultsgeneralizeandsupplementsomeconvergenceresultsoftheq-Sza′sz-Betaoperators,thustheyimprovetheexistingresults.