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简介：本文详细论述了高速接入技术的热点---CableModem技术的概念、特点、工作方式、技术标准及实际应用,着重从Internet高速接入方面作了介绍,并指出该技术蕴含的巨大发展潜力。

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简介：本文较为详细地介绍了如何通过wingate代理软件,来共享cablemodem宽带上网的安装与配置操作.因它源于实践中摸索出的经验,因此具有较好的实用价值.

简介：Theapproximateeigenfrequenciesforthein-planevibrationsofacablestruc-tureconsistingofinclinedcables,togetherwithpointmassesatvariouspointswerecom-puted.Itwasdiscoveredthattheclassicaltransfermatrixmethodwasinadequateforthistask,andhencethelargerexteriormatriceswereusedtodeterminetheeigenfrequencyequation.Thenpredictionsofthedynamicsofthegeneralcablestructurebasedontheasymptoticestimatesoftheexteriormatricesweremade.

简介：TheREapplicationinaluminumbasealloy,auniquebranchofREapplicationinmetallurgyinChi-na,hasdevelopedrapidly.Boththeoutputandtech-niqueareinaleadingpositionintheworld.Particular-ly,theREapplicationinpowertransmissioncablehasmadeaconsiderableprogress.UptonowChinacanfabricatethreekindsofRE-containingconductors.Oneisahighconductivitycon-ductor;theothertwoarehighstrengthandheat-re-

简介：从USI(通用串行接口)及I2C的工作原理出发,以AVR系列Attiny26为例,详细的阐述了如何采用USI实现I2C的主机模式和从机模式,并简要介绍了如何利用Mastermode对EEPROM进行读写.

简介：介绍采用ALTERA公司的可编程器件，实现I^2C总线的通信接口的基本原理；给出部分VHDL语言描述。该通信接口与专用的接口芯片相比，具有使用灵活，系统配置方便的特点。

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简介：Boththeinplaneandout-of-planetransversevibrationsofaviscoelasticcablesubjectedtoaninitialstressdistributinguniformonthecrosssectionarestudied.Theconstitutionofthecablematerialisas-sumedtobeofthehereditaryintegraltype.Thepartialdifferential-integralequationsofmotionarederivedfirst.ThenbyapplyingGalerkin’smethod,thegoverningequationsarereducedtoasetofsecond-ordernon-lineardifferential-integralequationswhicharesolvedbyfinitedifferencenumericalintegrationprocedures.Finally,theeffectsoftheviscosityparameterandtheelaslicparameteronthetransientamplitudesofthefirstmodeareinvestigatedbynumericalsimulation.

简介：在过去的地震基于海底的电报的表演，在海床差错运动下面决定电报性能的一个分析方法在这篇论文被建议。首先，海底的电报的地震损坏的普通类型被总结，它包括差错运动，海底的山崩和海床土壤液化导致的海床排水量，等等。损坏类似于观察到跟随陆地地震的埋葬的管道的损坏。2006年12月26日的Hengchun地震被用作案例研究。M7.2地震在20:26北京时间在华南海发生了，并且引起了14国际海底的电报切断并且碎。结果证明建议方法预言类似于在Hengchun地震观察了那的损坏。基于水深度和海底的地震的大小的影响的参量的研究，阻止损坏到海底的电报的反措施被建议。

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简介：AsimplifiedfragilityanalysisoffantypecablestayedbridgesusingProbabilisticRiskAnalysis(PRA)procedureispresentedfordeterminingtheirfailureprobabilityunderrandomgroundmotion.Seismicinputtothebridgesupportisconsideredtobeariskconsistentresponsespectrumwhichisobtainedfromaseparateanalysis.Fortheresponseanalysis,thebridgedeckismodeledasabeamsupportedonspringsatdifferentpoints.Thestiffnessesofthespringsaredeterminedbyaseparate2Dstaticanalysisofcable-tower-decksystem.Theanalysisprovidesacoupledstiffnessmatrixforthespringsystem.Acontinuummethodofanalysisusingdynamicstiffnessisusedtodeterminethedynamicpropertiesofthebridges.Theresponseofthebridgedeckisobtainedbytheresponsespectrummethodofanalysisasappliedtomultidegreeoffreedomsystemwhichdulytakesintoaccountthequasi-staticcomponentofbridgedeckvibration.Thefragilityanalysisincludesuncertaintiesarisingduetothevariationingroundmotion,materialproperty,modeling,methodofanalysis,ductilityfactoranddamageconcentrationeffect.ProbabilityoffailureofthebridgedeckisdeterminedbytheFirstOrderSecondMoment(FOSM)methodofreliability.Athreespandoubleplanesymmetricalfantypecablestayedbridgeoftotalspan689m,isusedasanillustrativeexample.Thefragilitycurvesforthebridgedeckfailureareobtainedunderanumberofparametricvariations.Someoftheimportantconclusionsofthestudyindicatethat(i)notonlyverticalcomponentbutalsothehorizontalcomponentofgroundmotionhasconsiderableeffectontheprobabilityoffailure;(ii)groundmotionwithnotimelagbetweensupportexcitationsprovidesasmallerprobabilityoffailureascomparedtogroundmotionwithverylargetimelagbetweensupportexcitation;and(iii)probabilityoffailuremayconsiderablyincreaseforsoftsoilcondition.

简介：这篇文章讨论动态州的分析在水下拖引电缆线当拖引轮船在成为寓言的一个方向改变它的速度时，介绍路径。一个三维的模型在水下拖引的系统被学习。为系统的确定的管理方程用中央含蓄的有限差别的方法被解决了。获得的差别非线性的联合方程被牛顿鈥檚方法解决，令人满意的结果被完成。这个问题的答案在动态装载和运动的评价有实际重要性，并且因此它对安全的改进和有效性直接适用近海活动。

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