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28 个结果
  • 简介:FUNKTION—ONE发布的F55和F81音箱,体形小巧而具有高声学素质,为用户提供新的选择。

  • 标签: 小型音箱 F55 ONE
  • 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:Alargeclassoflinearstructuralfunctions(LSF)satisfyingtheconditionofcorrelationalimmunityoforderoneareconstructedbystudyingthelinearstructuralBooleanfunctions.Withthesenewfoundedfunctions,theknownenumerationboundsofcorrelation-immunefunctionsoforderonearegreatlyimproved.Infact,thebest,uptonow,lowerboundisfound.

  • 标签: BOOLEAN FUNCTION STREAM ciphers Correlation-immune FUNCTION
  • 简介:今秋北京的夜晚,凉爽舒适。9月9日,时逢周末.朝阳公园西门前的马路上车水马龙,人流涌动,一场大型聚会即将开始。聚会的主办者是在京城已颇有名气的苏西黄俱乐部,俱乐部装饰古朴、格调高雅,成立3年多以来,已成为高级宾馆,银行等行业中的高级白领以及外国驻华使馆人员休闲、交流和娱乐的理想场所,宾客盈门。为使更多的宾客相聚一堂,

  • 标签: 声音 俱乐部 聚会 高级
  • 简介:东门是深圳市最繁华的商业购物区,有很大面积的步行街,世界上许多知名消费品品牌都在这里开设了专卖店,人们可以悠闲地逛街购物。不论是日间或晚上,这里都是人流涌动、熙来攘往,有如东京的新宿和香港的尖沙咀。

  • 标签: 深圳市 导向 制造 步行街 专卖店 消费品
  • 简介:FuzyLogicBasedEvolvingSystemandOneKindofCompetitionMechanismZhongxiong,HuWanjun&PengFeiAutomationSystemInstitute,NorthernJiao...

  • 标签: FUZZY LOGIC EVOLVING system Competing controller.
  • 简介:2007年12月3日,位于深圳的繁华商业步行街东门的朱古力酒吧(ClubChocolate)高调开业。这是一间具全新概念、将现代流行音乐与传统酒吧融为一体的俱乐部,装潢典雅高贵。酒吧主舞台的DJ台前吊挂了一座高达8英尺的水晶吊灯,场地周围环拱着10多座3英尺高的挂墙水晶吊灯。

  • 标签: 地标 音响 娱乐 制造 水晶吊灯 商业步行街
  • 简介:ItiswellknownthatthealgebraicexpressionofASSS-boxisverysimpleandonly9termsareinvolved.Hence,AESsecurityissuspectedalthoughthereisnovulnerabilityonitsofar.ToeliminatetheweaknessofextremelysmalltermsinthealgebraicexpressionofAESS-box,oneimprovedAESS-boxisproposed,whichpreservesthealgebraicdegreeinvariablebutsignificantlyincreasesthenumberofitsalgebraicexpressiontermsfrom9to255.Atthesametime,Booleanfunctionhasgoodcharactersinbalanceandstrictavalanchecriterion(SAC),etc.Finally,itisprovedthattheimprovedAESS-boxschemeissecuregainstthepowerfulknowndifferentialandlinearcryptanalysis.

  • 标签: 线性密码分析 复杂性 AES 高级保密标准 美国国家标准所 S-BOX
  • 简介:上海,作为时尚之者,有一种任何城市都无法比拟的气质。而上海的夜色更是美仑美奂,夕阳西下,夜幕低垂,上海变得更加炫目而前卫,灯光与霓虹交错,亮丽斑斓。2005年12月15日晚,坐落在代表着中国最尖端的流行风潮与最顶级消费的淮海路上的BonBon迪厅开业庆典Party就在这迷人的夜色中拉开了帷幕。

  • 标签: 中国 登陆 上海 淮海路
  • 简介:Amagneto-photoniccrystal(MPC)isdefinedasaperiodiclight-guidedstructureinvolvingmagneticmaterialsoraphotoniccrystalwithsomemagnetic-materialdefects.Thetransfermatricesofguidedopticalwaves(GOWs)propagatingrespectivelyinmagneto-opticalandnon-magneticdielectriclayersarededucedaccordingtothecoupled-modetheory.ThetransmissionspectraofGOWsinone-dimensionalmagneto-photoniccrystals(1D-MPC)areinvestigatedbythetransfermatrixmethod.Itisshownthatthetwosharppeaksinthe1D-MPC'stransmissionspectracanbeusedforhigh-resolutionmagneticfieldsensing;andacombfilterwithsixchannelscanbeachievedbyoptimizingthe1D-MPCstructureandcontrollingtheexternalmagneticfield.

  • 标签: 传输矩阵法 光子晶体 一维结构 透射光谱 磁光 耦合模理论
  • 简介:1960年,改编自小说《苏西黄的世界》的同名电影在世界各地放映了,女主角苏西黄由关南施饰演,男主角由威廉荷顿(WilliamHolden)饰演。由于小说和电影体现了五六十年代香港的美丽风情,当年在国外掀起一阵香港热,令外国人认识香港。

  • 标签: 俱乐部 北京 应用 香港 外国人 世界
  • 简介:Atunablephotoniccrystal(PC)filterisproposedwiththetwistednematic(TN)liquidcrystal(LC)asadefectlayer.Thepolarizationsensitiveperformanceandtheeigenmodesareanalyzed.Theresultsshowthattherearetwokindsoftransmissionmodes,namelyoande,whenthevoltageislow.Thedifferentmodescanbeselectedbyrotatingthefilteraxially.Theemodeshiftstowardtheshorterwavelengthsideastheappliedvoltageincreases.Thenthepeaksoftwomodesmergeintoeachotherandthepolarizationsensitiveperformancedisappears.Thephotonicbandgapisinsensitivetothevoltage.Thetunablerangeofthefilteris53nm.

  • 标签: 光子晶体滤波器 敏感性能 极化敏感 液晶层 一维 扭曲向列
  • 简介:MixClub(图1)对于每个北京的Partyanimal(派对爱好者)来说.应该是再熟悉不过了。MixClub凭借着纯正的电音、hip-hop音乐、时尚的装修和布局、绚丽的灯光效果及力度十足的音响效果吸引了第一批Club玩家。从此.人们想起北京的DISCo时.总会条件反射地记得MiX。MiXClub在拓宽场地之后.已经成为一个现场演出的舞台,是国际大牌hip—hopDJ来北京的必经之地。

  • 标签: 北京 音响系统 MIX DISCo 音响效果 灯光效果
  • 简介:Thispaperintroducesdecimatedfilterbanksfortheone-dimensionalempiricalmodedecomposition(1D-EMD).Thesefilterbankscanprovideperfectreconstructionandallowforanarbitrarytreestructure.SincetheEMDisadatadrivendecomposition,itisaveryusefulanalysisinstrumentfornon-stationaryandnon-linearsignals.However,thetraditional1D-EMDhasthedisadvantageofexpandingthedata.Largedatasetscanbegeneratedastheamountofdatatobestoredincreaseswitheverydecompositionlevel.The1D-EMDcanbethoughtashavingthestructureofasingledyadicfilter.However,amethodologytoincorporatethedecompositionintoanyarbitrarytreestructurehasnotbeenreportedyetintheliterature.Thispapershowshowtoextendthe1D-EMDintoanyarbitrarytreestructurewhilemaintainingtheperfectreconstructionproperty.Furthermore,thetechniqueallowsfordownsamplingthedecomposedsignals.Thispaper,thus,presentsamethodtominimizethedata-expansiondrawbackofthe1D-EMDbyusingdecimationandmergingtheEMDcoefficients.Theproposedalgorithmisapplicableforanyarbitrarytreestructureincludingafullbinarytreestructure.

  • 标签: 滤波器组 EMD 可重构 一维 经验模式分解 二叉树结构
  • 简介:Oneofthemainrequirementsofcognitiveradiosystemsistheabilitytodetectthepresenceoftheprimaryuserwithfastspeedandpreciseaccuracy.Toachievethat,apossibletwo-stagespectrumsensingschemeissuggestedinthispaper.Morespecifically,afastspectrumsensingalgorithmbasedontheenergydetectionisintroducedfocusingonthecoarsedetection.Acomplementaryfinespectrumsensingalgorithmadoptsone-ordercyclostationarypropertiesofprimaryuser'ssignalsintimedomain.Sincetheone-orderfeaturedetectionisperformedintimedomain,thereal-timeoperationandlow-computationalcomplexitycanbeachieved.Also,itdrasticallyreduceshardwareburdensandpowerconsumptionasopposedtotwo-orderfeaturedetection.Thesensingperformanceoftheproposedmethodisstudiedandtheanalyticalperformanceresultsaregiven.Theresultsindicatethatbetterperformancecanbeachievedinproposedtwo-stagesensingdetectioncomparedtotheconventionalenergydetector.

  • 标签: 循环平稳特性 无线电系统 检测技术 特征检测 能量检测 一阶
  • 简介:Weintroduceanewmodelofone-dimensional(1D)photoniccrystalcomposedofalternatelyarrangedRHMandLHMlayerswithpositiveandnegativerefractiveindicesrespectively,forwhichthetransmissionspectraofthemodelarecalculatednumericallywiththetransfermatrixmethod,andtheband-gapstructureandthepolarizationpropertiesareanalyzed.Wefoundthattheintroductionofnegativerefractiveindexlayers(i.e.LHMmediumlayers)givesrisetosomepeculiarband-gapstructureandpolarizationpropertiesasfollows.Firstly,theforbiddenbandsareextremelywideandthetransmissionbandsareverysharpwithoutoscillation;andsecondly,thechangeofincidentanglehasdifferentinfluencesontheforbiddenbandsofTEandTMmodes.FortheTMmode,theforbiddenbandwidthdecreasessubstantiallyandfinallyvanishes,andfortheTEmodewithcentralwavelength,thetotalreflectionhappensatanyincidentangle.

  • 标签: 光子晶体 光谱传输 折射系数 能隙带 偏振性质