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简介：Inthispaper,anovelmultipletrelliscodedorthogonaltransmitschemeisproposedtoexploittransmitdiversityinfadingchannels.Inthisscheme,auniquevectorfromasetoforthogonalvectorsisassignedtoeachtransmitantenna.Eachoftheoutputsymbolsfromthemultipletrellisencoderismultipliedwithoneoftheseorthogonalvectorsandtransmittedfromcorrespondingtransmitantennas.Bycorrelatingwithcorrespondingorthogonalvectors,thereceiverseparatessymbolstransmittedfromdifferenttransmitantennas.Thisschemecanbeadoptedincoherent/differentialsystemswithanynumberoftransmitantennas.Itisshownthattheproposedschemeencompassestheconventionaltrelliscodedunitaryspace-timemodulationbasedontheoptimalcyclicgroupcodesasaspecialcase.Wealsoproposetwobetterdesignsovertheconventionaltrelliscodedunitaryspace-timemodulation.Thefirstdesignuses8PhaseShiftKeying(8-PSK)constellationsinsteadof16PhaseShiftKeying(16-PSK)constellationsintheconventionaltrelliscodedunitaryspace-timemodulation.Asaresult,theproductdistanceofthisnewdesignismuchlargerthanthatoftheconventionaltrelliscodedunitaryspace-timemodulation.Theseconddesignintroducesconstellationswithmultiplelevelsofamplitudesintothedesignofthemultipletrelliscodedorthogonaltransmitscheme.Forbothdesigns,simulationsshowthatmultipletrelliscodedorthogonaltransmitschemescanachievebetterperformancethantheconventionaltrelliscodedunitaryspace-timeschemes.

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简介：一台哑的收音机和与普通接收装置同时交流的多重认知收音机被考虑的一种情形。在这份报纸，我们在两添加剂白人Gaussian噪音(AWGN)下面导出多重用户的认知多重存取的隧道(MUCMAC)的一个可完成的率区域隧道和rayleigh褪色隧道，由使用多重用户的联合弄脏编码的纸(DPC)和编码的重叠。通过认知，这被假定第二等的用户(怀疑)能获得主要用户(PU)的消息非有原因地预先准备。用这个方面信息，SUs能执行多重用户DPC从苏避免干扰。而且，SUs能也分配他们的transmit力量的部分帮助PU，用编码的重叠。因此，传统的多重存取的隧道(MAC)的能力区域能被扩大。而且，一些asymptotic结果作为数字被显示出怀疑增加。在AWGN盒子中，PU的最大的可完成的率随数字的增加对数地成长，这被说明，在瑞利盒子中怀疑，我们证明认知获得将与隧道信号减少到噪音比率(SNR)增加。

简介：ATjust18yearsold,YangJingistheonlySichuanoperaactressskilledintheancientartoffacetransformation.Yanglightsupasshetalksaboutit:'Twoyearsago,IhappenedtoseeaprogramonTVaboutface-transformation.Itwasfascinatingtoseehow,withaflickofhissleevesandaturnofhishead,theactorchangedhisfaceintotenstylesofstagemake-up.'Yangwassodrawntothisartthatshedecidedtolearnitforherself.

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简介：Asetofcoupledwaveequationsofacoustoopticdiffractionwithmultipleacousticwavesalongdifferentdirectionsisputforwardandits,solutionsarederived.Thecharacteristicsofthediffractionefficiency,com-pression,crossmodulation,andintermodulationintensitiesareanalyzedtheoretically.Thetheoreticalresultsaresupportedbyexperimentalmeasurementsthroughournewmultipledirectionalacoustoopticdevices.

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简介：In2014,wewitnessedthepolarizationofglobaleconomicgrowtti,aproliferationinthenumberofregionalhotspotsthathadwidespreadrepercussions,incrediblycomplexandzealousbigpowerrelationsandsomeeye-catchingdiplomaticachievementsfromChina.Thisauthorattemptstogiveaforecastofglobaltrendsin2015basedonthedevelopmentsinthepreviousyear.In2014,countriesshowedtheirstrengthsandweaknessesinthepolitico-economicdomain,whiletheglobaleconomygaveapoorperformance.Inthedevelopedworld,theU.S.registeredastrongeconomicrecovery,whereasEuropeandJapanstruggledwithsluggishgrowth.Ofthe

简介：客观：探索multiple-ligamentinjured膝的临床的特征并且为multiple-ligamentinjured膝评估处理的协议，技术和结果。方法：从2001年10月，到在9的2005年3月，有联合前面的十字形的系带(ACL)的9膝和以后的十字形的系带(打印机控制语言)眼泪，病人们被识别与临床并且arthroscopic考试。他们，5膝与破裂ofposteromedial角落(PMC)和中间的并行的系带(MCL)被相结合，4与混乱ofposterolateral角落(PLC)，2与腿弯部的脉管的损害并且1与小腿侧的神经损害。六个病人在损伤的尖锐阶段被就医，腿弯部的动脉and4的2个收到的修理举办了PMC和MCL的修理。有在arthroscope下面的自体移植的ACL和打印机控制语言的重建在损伤以后在4～10个星期在所有病人被执行，包括有在4个病人的二头肌femoris腱tenodesis的以后的一半的PLC的重建和PMC和MCLwith的重建在1个病人的大腿骨的扁带。结果：没有严重复杂并发症在9个病人在手术以后发生在早舞台。所有他们被跟随在上面为有23的一般水准的10-39月。00months±9。46个月。Lysholm分数是有85.00±的一般水准的70-958.29。InternationalKnee文档委员会(IKDC)分数从严重地反常(等级D)在在到在2膝的正常(等级A)的起始的检查的9膝，将近在6膝的正常(等级B)并且在在最后后续的1knee反常。9个病人，7在损害前回到了一样的活动水平，2在水平下面。结论：有严重不稳定性的多重系带的受伤的膝通常与另外的重要结构损坏被相结合。因此，对联合损害的小心的评价和治疗是必要的。在arthroscope下面的ACL和打印机控制语言的重建，同时或在阶段与额外的关节的系带的修理或重建结合了，在外科和令人满意的结果有最小的损伤的优点。

简介：Inthispaper,theapproximationforfourkindsofknapsackproblemswithmultipleconstraintsisstudied:0/1MultipleConstraintKnapsackProblem(0/1MCKP),IntegerMultipleConstraintKnapsackProblem(IntegerMCKP),0/1k-ConstraintKnapsackProblem(0/1k-CKP)andIntegerk-ConstraintKnapsackProblem(Integerk-CKP).Thefollowingresultsareobtained:1)UnlessNP=co-R,nopolynomialtimealgorithmapproximates0/1MCKPorIntegerMCKPwithinafactrok^(1/2)-σforanyσ>0;unlessNP=P,nopolynomialtimealgorithmapproximates0/1MCKPorInterMCKPwithinafactork^(1/4)^-σforanyσ>0wherekstandsforthenumberofconstraints.2)Foranyfixedpositiveintegerk,0/1k-CKPhasafullypolynomialtimeapproximationscheme(FPTAS).3)Foranyfixedpositiveintegerk,Integerk-CKPhasafastFPTASwhichhastimecomplexityO(n+1/ε^3+1/ε^3k+1-2)andspacecomplexityO(n+(1/ε^3)),andfindsanapproximatesolutiontowithinεoftheoptimalsolution.

简介：ThisarticleinvestigatestheconvergenceandgrowthofmultipleDirichletseries.TheValironformulaofDirichletseriesisextendedton-tupleDirichletseriesandanequivalencerelationbetweentheorderofn-tupleDirichletseriesanditscoefficientsandexponentsisobtained.

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简介：ＤＩＡＧＮＯＳＩＳＡＮＤＴＲＥＡＴＭＥＮＴＯＦＭＵＬＴＩＰＬＥＰＲＩＭＡＲＹＣＡＲＣＩＮＯＭＡＳＺｈａｎｇＳｈｕａｎｇｍｉｎ张双民ＭａＳｏｎｇｚｈａｎｇ马颂章ＹａｎｇＤａｌａｉ杨大来ＣｈｅｎＳｈｕｇｕａｎｇ陈曙光ＹａｎｇＣｈｕｎｍｉｎｇ杨春明Ｓｏｎ...

简介：TheorderofmagnitudeofmultipleFouriercoefficientsofcomplexvaluedfunctionsofgeneralizedboundedvariationslike(Λ1,,ΛN)BV(p)andr-BV,over[0,2π]N,areestimated.

简介：Themultiple-choicetestisacommonexaminationformthatiswidelyusedasastandardinternationaltestingmethodinvariousacademicfields,especiallyinlanguagetesting.However,aftermanyyearsofapplication,investigationandresearch,manyteachersandeducatorshaveadmittedthattojudgestudents""realandpracticalabilities,suchtestingmethodhasmanylimitationsanddrawbacks.

简介：与多重损伤在病人为错误诊断探索特征，治疗结果和原因的目的，以便减少错误诊断的发生。从1997年8月被同意进入我们的部门到2008年8月的有多重损伤的3163个病人全部的方法A，回顾地被学习比较诊断和治疗的特征。有2117男性(66.93%)，有平均数的1046女性(33.07%)36.46年变老(范围，14-80年)。象一般地位，创伤的条件，诊断和治疗状况，预后和死亡那样的参数被分析。错误诊断组和正确诊断组之间的差别以阐明的损害，复杂并发症和治疗结果的严厉被比较错误诊断的原因和预防。结果在这研究的多重损伤的错误诊断率是16.19%。误诊的主要解剖地点是手足和骨盆(299个位置，39.50%)，腹的区域和骨盆的机关(148个位置，19.55%)，并且胸的区域(109个位置，14.40%)。在错误诊断组，ISS，一些医院停留，知觉的骚乱的率，批评盒子和吃惊，盒子是33.78吗？

简介：Anoverviewispresentedonthestatusofstudiesonmultiplecodesingeneticsequences.Indirectly,theexistenceofmultiplecodesisrecognizedintheformofseveralrediscoveriesofSecondGeneticCodethatisdifferenteachtime.Aduecreditisgiventoearlierseminalworkrelatedtothecodesoftenneglectedinliterature.Thelatestdevelopmentsinthefieldofchromatincodearediscussed,aswellasperspectivesofsingle-baseresolutionstudiesofnucleosomepositioning,includingrotationalsettingofDNAonthesurfaceofthehistoneoctamers.

简介：LetXbeaBanachspaceand{ej}j=1beasequenceinX.Theauthorshowse∞that{ej}∞j+1isabasicsequenceifandonlyif∑n∞=1rnαnjconvergesforeveryj＞1ande∞-∞∞e∑∞n=1rn∑∞j=1αnjej=∑j=1(∑∞n=1rnαnj)jholdsforeverychoiceofscalarvariables{αnj}suchthat∑∞n=1αnjejconvergesforeachn>-1andanychoiceofscalarvariables{rn}suchthat∑∞n+1∑∞f=1rnαnjejconverges.Moreover,someapplicationsabouttheresultaregiven.