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500 个结果
  • 简介:Resolution5是一款效率高、扩散角度窄、投射距离远的高/中/低频3路阵列系统音箱。它采用专利的斧头形相位塞,可配合方形波导形成边界清楚的方形投射图形,准确地投射声音,并将反射声降低至最小,从而大大提高了声音的清晰度:

  • 标签: 音箱 投射距离 扩散角 反射声 清晰度 方形
  • 简介:这份报纸在线和其生成器承认空必要系列的出生鈥揹eath进程上为散开进程给描述。为为一般Markov发电机的空必要系列的一些相等的条件也被讨论。关键词Markov生成器-必要光谱-紧缩的嵌入-强壮的鈥搕ype不平等先生(2000)题目分类46E35-60J60-RFDP(号码2001002707)部分地支持的60J75研究,973工程,和NSFC(号码10121101)

  • 标签: Markov生成元 本质光谱 HARDY型不等式 扩散过程 数学分析
  • 简介:Apracticalmethodforcomputingtheone-wayrectangularorthotropicplate(isotropicplateasaspecialcase)issuggestedinthispaper.Thesupportedcondi-tionsintwooppositeedgesmaybesimplysupported,continuousorsupportednonsymmetricallyandtheothertwooppositeedgesareslide-supportedorfree.Aseriesofsimplifiedformulasaregivenforcalculatingthebendingmomentsalongthecrosssection(loadedsection),inwhichtheactingpointoftheconcentratedloadorthecenterofarec-tangularuniformloadislocated.Thevalidrangeandaccuracyoftheseformulaswerestud-iedandtheapproximateresultswereexaminedandcomparedextensivelywiththosebythetriangularseriessolutionorfiniteelementmethod.

  • 标签: stress analysis BRIDGE structure piers/plate structures
  • 简介:Infantileaphasia,frequentlyseenofterin-fantileencephalopathysuchasbraintraumaandmeningitis,belongstothecategoriesof"suddenlossofvoice"and"difficultyinspeechduetore-tractionofthetongue"inTCM.Asthereisnoeffectivespecifictherapyintreatingthisdis-easeinmodernmedicine,acupunctureissuperi-ortoothertherapiesinthetreatmentofinfantileaphasia.Inourclinicfordifficultdisease,wehavetreatedtheillnessbyacupuncturewithfili-formandmagneto-plum-blossomneedlecom-binedwithChineseherbsandtutorialmethods.Ourtherapyiseffectiveandquickinproducingtherapeuticeffectswithshorttreatmentcourse,whichisreportedindetailinthefollowing:

  • 标签: 针灸 科技出版社 卫生 中国当代 头皮针 人民
  • 简介:英语中有一些习语,其名词前用one’s与用sb’s的意义是不同的,择其常见者,介绍如下:1.goone’sway动身,前往gosb’sway事情对某人有利MrBournehospitablyaskedifIweregoinghisway.伯恩先生客气地问我是不是和他一起走。Iwokeuplatethismorning,andthenthetrafficdelayedmeasIcametowork—nothingseemstobegoingmywaytoday.我今天早晨醒得迟了,上班路上又因交通拥挤而耽误了时间,看来今天我没有碰上一件顺心事。2.takeone’splace就座,就位takesb’splace代替某人WhileIwaswondering,atthis,ourschool-mastertookhisplace.当我正为这些情景感到诧异

  • 标签: 交通拥挤 习语 英语 名词 就位 情景
  • 简介:Anewpolymer,polyzirconoxanesal(PZS),issynthesizedfromthereactionofzirconiumoxychlorideoctahydrate(ZrOCl2-8H2O)withacetylacetone(Hacac)andsalicylalcohol(SA)byone-potprotocol.Thepolymerissolubleincommonorganicsolvents,suchasethanol,methanol,acetone,tetrahydrofuranandchloroform,andexhibitsrheologywithviscosityof100-300mpasat25℃.Thesepropertiesaresuitableforusesinfabricationofceramicmatrixfibercomposites.Pyrolysisofthispolymerat1300℃inargonprovidesnanosizedZrCwithsphericalmorphologyandsizeof20-100nm.

  • 标签: ZIRCONIUM CARBIDE Preceramic POLYMER MORPHOLOGY
  • 简介:LikeeverylanguageAmericanEnglishisfullofstrangeexpressions,phrasesthatcomefromdaytodaylifeofthepeopleanddevelopintheirownway.Wheredidtheseexpressionscomefrom,andhowdidtheygetintothelanguage?Ourexpressiontodayis'togetone’sgoat'andotherphrasesthatcomefromthegoat.Thegoatisanancientcreaturethathasdonemuckforman,providingmilk,meat,cheese,andothergoodandusefulthings.

  • 标签: STRANGE providing ancient today things mankind
  • 简介:BeijingJeepTakesThirtyYearsinOneStepBystaffreporterTANMINTHEFIRSTfour-wheeldeive,cross-countryvehicleintheworld-thejeep-was19...

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  • 简介:Theintroductionofdesigneroestrogensasatreatmentmedalityinhormonereplacementinwomenhasinvitedtoconsidertheconceptofcompoundswithselectiveandrogeniceffectsformalehonnonereplacementtherapy.Thefullspectrumoftheactionsoftestosteronemaynotbenecessaryofevenundesiredforcertainindicationsfortestosteronetreatment,Todefineforwhatindicationscertainandrogenicpropertiesaredesiredandundesiredmoreinsightinbasicandrogen(patho)physiologyisrequired.Thereisconvincingevidencethataromatizationofandrogeniccompoundstonestrogensmightbeanadvantageformaintenanceofbonemassanditmightalsomitigatenegativeeffectsofandrogensonbichemicalparametersofcardiovascularrisks:thepotentiallynegativeeffectsofoestmgensonprostatepathologyinageingmenneedsfurtherelucidation.Whiletheroleofdihydro-testosterone(DHT)forthemalesexualdifferentiationandforpubertalsexualmaturationisevident,itsroleinmatureandageingmalesseemslesssignificantormayevenbeharmful.Itis,however,ofnotethatanegativeeffectofDHTonprostatepathophysiolog~iscertainlynotproven.Formalecontraceptionaprogestationalagentwithstrongandrogenicpropertiesmightbeanasset.Formostoftheandrogenicactionsthecriticallevelsofandrogensarenotwellestablished.Thelatterisrelevantsincethelargeamountofandrogenmoleculesrequiredforitsbiologicalactions(ascomparedtooestrogens)isanimpedimentinandrogenreplacementmedalities.Theremayberoomformorebiopotentandrogenssincedeliveryoflargeamountsofandrogenmoleculestothecirculationposesproblemsfurtreatmentmodalities.(AsianJAndro11999Jun;1:21-28)

  • 标签: 亚洲 男科学 荷尔蒙 性激素 生殖健康
  • 简介:AnanalysisonthepropertyofSelf-ScalingRankOneUpdate(SSR1)isgiven.Inviewofit,weexplorewhethertheSSR1updatewithoutusingexactlinesearchpossessesthefiniteterminationpropertywhenitisappliedtominimizeapositivedefinitequadraticobjectivefunction.

  • 标签: quasi-Newton finite termination INEXACT line search
  • 简介:Inthispaperwestudytheexistence,pathwiseuniquenessandhomeomorphismflowofstrongsolutionstoaclassofonedimensionalSDEsdrivenbyinfinitelymanyBrownianmotions,andwithYamada-Watanabediffusioncoefficientsanddistributionaldriftcoefficients.

  • 标签: 随机微分 方程式 漂移 同拓扑
  • 简介:Acer并不是第一个推出上网本的品牌。其推出AspireOne也并非价格最低的产品,然而凭着时尚的外观和出众的工业制作实力,AspireOne却成为2008年上网本市场最大的黑马.在上网本市场占有一度达37.28%,甚至超越最早进入上网本领域的华硕。

  • 标签: ASPIRE ACER 上网 市场 华硕
  • 简介:Weintroducethecategoryoft-foldmoduleswhichisafullsubcategoryofgradedmodulesoveragradedalgebra.Weshowthatthissubcategoryandhencethesubcategoryoft-Koszulmodulesarebothclosedunderextensionsandcokernelsofmonomorphisms.Westudytheone-pointextensionalgebras,andanecessaryandsufficientconditionforsuchanalgebratobet-Koszulisgiven.Wealsoconsidertheconditionssuchthatthecategoryoft-Koszulmodulesandthecategoryofquadraticmodulescoincide.

  • 标签: 等级代数 KOSZUL代数 Koszul模数 扩展
  • 简介:这篇论文讨论在二力量之间的一个随机的决斗模型。在一个方面上是有仅仅一件武器或人的游击队员或恐怖主义者,并且在其它上有许多武器的某种类的组织力量。模型被称为many-versus-one游击队员战争。游击队员方面有象地点的选择和约会,由地形学的隐匿,打算的目标的观察,和火的线的时间那样的很多个优点。在场的作者在他们相信的这些优点是在游击队员力量和组织力量之间的一个决斗的一种现实主义的情形。由与实际决斗背景与一致的四想象,论文论述公式计算令人满意的概率,弱令人满意的概率,和攻击方面的可接受的概率。

  • 标签: 概率分析 战争 恐怖分子 接受概率 力模型 消防队
  • 简介:Let∑,Гbetwon-by-ndiagonalmatriceswithσi,γiastheirdiagonals.Fortheinverseeigenvalueproblem:lookfory∈RnsuchthatГ+yyTissimilarto∑,weprovethatualsothesufficientconditionforthesolvabilityofthisinverseproblem.Itssolution(set)isgivenexplicitly.Insomecase,theproblemisunstable.Butweprovethatthesumsofthesquareofsomecontigiouscomponentskeepstable,i.e.,smallsumkeepssmall,largesumhasasmallrelativeperturbation,seeTheorem3.

  • 标签: INVERSE EIGENPROBLEM rank-one updating stablity