简介：Timereversalisappliedtotheunderwaterspreadingspectrumcodingcommunication.Onthebaseofanalyzingthefocusingcharacteristicsofthetimereversalinunderwaterwaveguide,thetimereversalisstudiedtoovercomethewavedistortionoftheencodedsignalcausedbythemulti-patheffect.TheexperimentresearchforunderwatercodingcommunicationiscarriedoutinalabwatertankandthecorrespondingtheoreticalanalysisisalsoconductedbyBinaryPhaseShiftKeying(BPSK)encodingandBarkercodewith7chipsforthespreadingspectrumsignal.Theresultsshowthatthetimereversalcanimprovethefocusinggainandincreasetheratiooftheprincipaltothesecondlobeofthecodingsignal,andcandecreasethebiterrorrateandincreasethecommunicationdistance.

简介：AbstractTic disorders (TD) is a neurodevelopmental disorder that is often first recognized in children and adolescents and is characterized mainly by motor and phonic tics. Drug treatment of TD has been criticized because of serious side effects, and TD treatment emphasizes behavioral psychotherapy. This study reviewed the most common behavioral psychotherapy for TD: habit reversal training (HRT). We examined the contents, variation, curative effects, and premonitory urge control of HRT and other behavioral psychotherapies. The findings suggest that current understanding of HRT is insufficient and further studies are needed. First, studies of online guidance training are needed to implement technology that can help more patients. Second, the future integration of HRT and other technologies is important. Third, imaging techniques could be used to further explore the brain mechanisms underlying HRT. Research on HRT for TD in China is insufficient. We call on more Chinese researchers to study, investigate, and develop technology to promote the development of behavioral psychotherapy for TD in China.

简介：ThemagnetizationreversalmechanismsforNinanowireswithdifferentdiameterswereinvestigatedbymi-cromagneticsimulations.Theresultsshowthatthereversalmechanismsaresignificantlydependentonthediameterofwire.Forverythinwires,thereversaloccursbypseudo-coherentrotation.Withincreasingdiam-eter,magnetizationreversaltakesplaceviadifferentnucleation(thetransversedomainwallandthevortexdomainwall)andsubsequentpropagation.Thereasonoftransitionfromthetransversedomainwalltothevortexdomainwallisgivenbyanalyticalstudies.Withfurtherincreaseofthediameter,thereversalnucleardomainwallbecomestundish-shapedform.Asthediameterincreases,thewidthofwallbecomeslarger.

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简介：Weproposethatdomaininversioncanbedirectlyinducedbyfemtosecondlaserboththeoreticallyandexperimentally,whichopensapathtoachievethree-dimensional(3D)nonlinearcrystalwithaperiodinsub-micron-scale.Asimulationofdomaininversionismodeledbyconsideringthetemporaldistributionoffemtosecondpulses.Thecalculationresultsclarifythatthedomaininversionscanhappenwithinoraftertheinteractionwiththelaserpulse,andtheresponsetimeofdomaininversionisinthepicosecondleveldependingontheintensityandthematerials.Thedomainreversalwindowsoflithiumniobatebyfemtosecondlaserareobservedwhichagreeswiththeoreticalpredictionsqualitatively.

简介：目的：研究手法对于颈本体觉紊乱的眩晕患者的头颅空间回复能力的影响。方法：利用头颅三维空间运动测量仪，临床观察72例颈本体觉紊乱的眩晕患者手法治疗前后其头颅空间回复能力的变化。另外选取51颈椎动脉供血不足的眩晕患者及138例正常人作对照组。结果：手法治疗后本体觉组在三个运动轴线上的头颅空间偏移度均有明显减小，结论手法有即刻改善颈本体觉功能的作用，在临床椎动脉供血不足型眩晕的发病也存在着本体觉紊乱的因素。

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简介：ＳＩＧＮ－ＲＥＶＥＲＳＡＬＰＲＯＰＥＲＴＹＦＯＲＦ－ＭＡＴＲＩＣＥＳＡＮＤＮ－ＭＡＴＲＩＣＥＳＸＵＳｏｎｇ（ＧｒａｄｕａｔｅＳｃｈｏｏｌ，ＣｈｉｎａＡｃａｄｅｍｙｏｆＲａｉｌｗａｙＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００８１，Ｃｈｉｎａ）Ａｂｓｔｒａ...

简介：我们现在的新奇向量排列和分支减小方法为小点颠倒算法骑车最小化执行的数字。新方法被使用挑选指令多重数据(SIMD)平行复杂数据浮点的实现快Fourier变换(快速傅里叶变换)。运作的钟周期的数字能被使用我们的分支减小方法被使用我们的向量排列方法并且在1.1被3.5的一个平均因素减少，与常规实现相比。MPC7448的实验(著名SIMD减少了指令集计算处理器)证明我们的最佳的小点颠倒算法一致地在复杂数组操作每元素比二个周期拿少数。

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简介：ＴＨＥＳＴＵＤＩＥＳＯＦＲＥＶＥＲＳＡＬＯＮＩＮＨＩＢＩＴＩＮＧＤＮＡＳＹＮＴＨＥＳＩＳＡＮＤＣＬＯＮＡＬＦＯＲＭＡＴＩＯＮＯＦＨＬ－６０ＣＥＬＬＳＷＩＴＨＨＹＰＥＲＴＨＥＲＭＩＡＣｈｅｎＸｉｅｑｕｎ；ＳｈｅｎＳｕｙｕｎ；ＨｕＳｈｅｎｇｈｕｉ；ＷｕＢ...

简介：在有颠倒(TR)技术是investigated.TR的柔韧的时间的不明确的环境的目标察觉和本地化是物理进程以及信号processing.Therefore的一个方法，经由TR执行beamforming是自然的，即，TRbeamforming(TRBF).To还原剂TR上的环境无常的效果时间空间的集中，播送TRBF与当模特儿而不是物理探查来源被学习，有斜装载的柔韧的最小变化的收到TRBF被放forward.Both

简介：在这份报纸，一个频率领域决定反馈均衡器为单身的搬运人传播被建议，时间颠倒时空块(TR-STBC)编码。斜决定反馈均衡器矩阵能从频率领域隧道反应是计算的，这被显示出。在完美的反馈假设下面，建议均衡器能接近匹配的过滤器界限(MFB)。与存在时间领域决定反馈均衡器相比，建议均衡器与一样的均等复杂性展出更好的性能。

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简介：AIM:Toevaluatewhetherglaucomatousvisualfielddefectparticularlythepatternstandarddeviation(PSD)ofHumphreyvisualfieldcouldbeassociatedwithvisualevokedpotential(VEP)parametersofpatientshavingprimaryopenangleglaucoma(POAG).METHODS:VisualfieldbyHumphreyperimetryandsimultaneousrecordingsofpatternreversalvisualevokedpotential(PRVEP)wereassessedin100patientswithPOAG.ThestimulusconfigurationforVEPrecordingsconsistedofthetransientpatternreversalmethodinwhichablackandwhitecheckerboardpatternwasgenerated(fullfield)anddisplayedonVEPmonitor(colour14')byanelectronicpatternregeneratorinbuiltinanevokedpotentialrecorder(RMSEMGEPMARKII).RESULTS:Theresultsofourstudyindicatethatthereisahighlysignificant(P<0.001)negativecorrelationofP100amplitudeandastatisticallysignificant(P<0.05)positivecorrelationofN70latency,P100latencyandN155latencywiththePSDofHumphreyvisualfieldinthesubjectsofPOAGinvariousagegroupsasevaluatedbyStudent’st-test.CONCLUSION:ProlongationofVEPlatenciesweremirroredbyacorrespondingincreaseofPSDvalues.Conversely,asPSDincreasesthemagnitudeofVEPexcursionswerefoundtobediminished.

简介：Combinedthedecompositionoftimereversaloperatorandthetimereversalre-verberationnulling,anewtimereversalprocessingapproachforecho-to-reverberationratioenhancementisproposed.Inthismethod,a2-dimensionalsignalsubspacefortherangeofthetargetandtwobottomfocusingweightvectorsfortherangesnearthetargetareobtainedbythedecompositionoftimereversaloperator.Fromthesignalsubspaceandfocusingweightvectors,aconstrainedoptimalexcitationweightvectorofsourcereceiverarraycanbededucedtonulltheacousticenergyonthecorrespondingbottomandmaximizetheenergyatthetar-get.Thismethodremediestheshortagesofconventionaltimereversalprocessing,timereversalreverberationnullingandtimereversalselectivefocusingmethod.Itfocusessoundenergyatthetargetandnullstheenergyatthebottomnearthetargetrangesimultaneously,thereforeenhancingtheecho-to-reverberationratiowithoutprobesourceandprior-knowledgeoftherel-ativescatteringintensityoftargetandbottom.Numericalsimulationsintypicalshallowwaterenvironmentsshowedtheeffectivenessoftheproposedmethodanditsimprovedperformanceforecho-reverberationenhancementthanconventionaltimereversalprocessing.

简介：ExperimentalautoimmuneencephalomyelitiscanbeinitiatedspontaneouslyanddevelopedprogressivelyinTCRtransgenicmicespecificformyelinbasicproteinwhenexposedtonon-sterileenvironment,thusmorecloselymimickinghumanmultiplesclerosis.Byintravenousadministrationofmyelinbasicprotein,wesucceededinrapidlyreversingtheclinicalandpathologicalsignsofprogressivespontaneousdiseaseinthesemice.ThemajorityoftransgenicTcellsofMBP-injectedmicewasdeleted,withdramaticallyincreasednumbersofapoptoticcells,inlymphnodesandspleen,butnotinthymus.Proliferativeresponsesofsingle

简介：Usingthetimereversal(TR)-reversetimemigration(RTM)mixedmethod,thenumericalanalysistowardstheacousticfieldfordetectionandlocationoftargetsinlayeredmediaisperformed.Firsttheapproachesandstepsofthenumericalanalysisandsimulationforacousticfieldareproposed,then,theacousticfielddistributionofsingletargetandmultipletargetsarefurthercomputedbyusingtheapproachesofsingleemission-multiplereceivingandmultipleemission-multiplereceiving.Thenumericalsimulationresultsindicatethattargetdetectionandlocationcanbewellrealized.Bycomparison,goodresultsareobtainedfromthebothtwoapproaches,butlargetime-consumingisobservedinwayofmultipleemission-multiplereceiving,andsowouldbeunacceptable.Additionally,theimprovedwayisalsoproposedformultipletargetdetection.

简介：目的：研究电针逆转血管紧张素-（17）[Ang-（1—7）]在大鼠延髓尾端腹外侧区（CVLM）引起血压降低的作用机制。方法：采用中枢核团微量注射和微透析，以及高效液相色谱（HPLC）荧光检测等技术观察Ang（17）及其选择性受体拮抗剂（D-Ala7）-Ang-（1—7）（Ang-779）在大鼠CVLM引起血压改变时氨基酸类神经递质释放的变化以及电针对血压和氨基酸类递质释放的影响。结果：在CVLM微量注射Ang（1—7）可引起血压降低，同时伴该区内兴奋性氨基酸谷氨酸（Glu）释放增多和抑制性氨基酸牛磺酸（Trau）释放减少；相反，在CVLM微量注射Ang779则可引起血压升高，同时伴Glu释放减少和Tau释放增多。在相当于人”足三里”穴位电针20min，可分别抑制在CVLM微量注射Ang—（1-7）或Ang779所引起的血压降低或升高，同时也能部分抵消注射Ang-（17）或Ang779所引起的Glu、Tau释放的改变。结论：电针逆转Ang（1-7）或Ang-779在CVLM引起的降压或升压作用可能与Glu、Tau释放量的改变有关。

简介：Objective:Toexplorethereversaleffectofmifepristoneonmultidrugresistance(MDR)indrug-resistanthumanbreastcancercelllineMCF7/ADRanditsmechanisms.Methods:ExpressionofMDR1andMDR-associatedprotein(MRP)mRNAinMCF7/ADRcellswasdetectedusingreversetranscription-polymerasechainreaction(RT-PCR).WesternblottingwasusedtoassaytheproteinlevelsofP-glycoprotein(P-gp)andMRP.Intracellularrhodamine123retentionand[3H]vincristine(VCR)accumulationweremeasuredbyflowcytometryandliquidscintillationcounter,respectively.MTTreductionassaywasusedtodeterminethesensitivityofcellstotheanticanceragent,adriamycin(ADR).Additionally,aMCF7/ADRcellxenograftmodelwasestablishedtoassessthereversaleffectofmifeprisoneonMDRinMCF7/ADRcellsinvivo.Results:Miferpristonedose-dependentlydown-regulatedtheexpressionofMDR1andMRPmRNAinMCF7/ADRcells,accompaniedbyasignificantdecreaseintheproteinlevelsofP-gpandMRP.Afterexposureto5,10,and20μmol/Lmifepristone,MCF7/ADRcellsshoweda3.87-,5.81-,and7.40-foldincreaseintheaccumulationofintracellularVCR(aknownsubstrateofMRP),anda2.14-,4.39-,and5.53-foldincreaseintheretentionofintracellularrhodamine123(anindicatorofP-gpfunction),respectively.MTTanalysisshowedthatthesensitivityofMCF7/ADRcellstoADRwasenhancedby7.23-,13.62-,and20.96-foldafterincubationwithmifepristoneasabove-mentioneddosesfor96h.Invivo,mifepristoneeffectivelyrestoredthechemosensitivityofMCF7/ADRcellstoADR.After8weeksofadministrationwithADR(2mg·kg-1·d-1)aloneorincombinationwithmifepristone(50mg·kg-1·d-1),thegrowthinhibitoryrateofxenograftedtumorsinnudemicewas8.08%and37.25%,respectively.Conclusion:MifepristoneexertspotentreversaleffectsonMDRinMCF7/ADRcellsinvitroandinvivothroughdown-regulationofMDR1/P-gpandMRPexpressionandinhibitionofP-gp-andMRP-dependentdrugefflux,thusincreasing