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简介：Inthispaper,thefeedbackloadreductionprobleminwirelesssystemsbasedonorthogonalfrequencydivisionmultiplexing(OFDM)isinvestigatedandanopportunisticfeedbackscheme(OFS)isproposed.ThekeyideabehindOFSisthatonlythekeychannelgainswhichcansignificantlyaffectthesystemthroughputarefedbacktotheBS.Firstly,thekeychannelgainsareprovedtobelongtoachannelgaininterval.Secondly,astatisticalmethodisproposedtoestimatethechannelgaininterval.Thirdly,theopportunisticfeedbackschemeisformulatedandthefeedbackloadofOFSisanalyzed.TheadvantageofOFSisthreefold:thefirstisOFScanworkinbothOFDM-basedmulticastsystemandOFDM-basedunicastsystem.ThesecondisthechannelfadingtypeoftheBS-userlinkisnotrequired,whichismorerealistic.ThethirdisOFScangetbetterfeedbackloadperformancecomparedwithotherschemes,whileachievingalmostthesamethroughputperformancecomparedwiththatoffullfeedbackscheme.

简介：这份报纸的目的是在在SPECT重建治好TV模型的staircasing人工制品调查infimal卷绕旋转规则化的能力。我们作为一个凸的三块的优化问题与infimal卷绕旋转规则化提出SPECT重建的问题并且以涉及它的客观函数的函数的最近操作符由定点方程的一个系统描绘它的解决方案。我们然后基于定点方程开发一个新奇定点最近算法。而且，我们介绍古典MLEM(最大可能性的的期望最大化)激发的一个preconditioning矩阵算法。我们证明建议算法的集中。数字结果被包括证明infimal卷绕旋转规则化能够有效地减少staircasing人工制品，当以signal-to-noise比率和系数恢复对比维持可比较的图象质量时。

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简介：Excavatingsandsandgravelonlandincombinationwithconstructingreservoirsforstoringfreshwaterisanidealapproachinatolls.Appropriateminingofgravelfromtheprogradinggravelbeachisacceptable.Diggingreefrockclosetotheedgeofthewideoceanreefflatwithoutsurfaceloosesedimentsonitorsandbeachcanbeaccepted.Excavatingsandfromsomedepthsinlagoonisascientificapproachparticularlyimportantforurbanizedatolls.However,selectingappropriatesitesforminingsandotherthanatsomedepthsinlagoonissuitabletoruralislandswithoutdensepopulations.Thesesitesincludeupdriftsideoflonggroinonthereeffiat,partlyfilledaccesschannel-port,outletofartificialchannelandlagoonmarginontheprogradingcoast.

简介：InBaotourareearthtailingsore,thegradeofrareearthisclosetothatoftheraworenearly.Therareearthsarediscardedintailingsdamcausedbyaseriouswasteofresources.Firstofall,thedecompositionproductsofbastnaesite-andmonazite-mixedrareearthtailingsinCaOinreducingatmospherewerestudiedbymeansofX-raydiffraction(XRD).TheresultsshowthatthenormalproductsareCeO_2,Ce_2O_3,Ca_5F(PO_4)_3,andCe_(0.75)Nd_(0.25)O_(1.875),andtherearenoREPO_4andREFCO_3.Secondly,theroastedproductwasextractedinHCl,andtherelationshipamongroastingtime,roastingtemperature,CaOaddition,andextractiontemperaturewasstudiedbythequadraticregression-orthogonalanalysis.Throughanalysis,theoptimumprocessconditionsofmixedrareearthtailingsextractedareobtainedasfollows:roastingtimeof60min,roastingtemperatureof800℃,CaOadditionof30%,extractiontemperatureof80℃,andextractionratioof99.18%.

简介：现在，内部任务的干扰是在分析multicores的预定行为的主要困难。预定可预言的嵌入的multicore体系结构MERASA，它允许安全最坏的执行时间(WCET)评价，作为一个吸引人的解决方案出现了。在建筑学，WCET能被能被干扰知道的公共汽车仲裁人(IABA)和划分例如columnization或bankization的动态缓存围住的上面的界限延期(UBD)估计。然而，这体系结构面对在减少的UBD和有效分享的缓存利用之间的窘境。获得更紧密的WCET评价，我们建议由优化与IABA和二水平的划分缓存在multicore系统上印射的bank-to-core减少UBD的一条新奇途径。为这，我们首先基于内部任务的干扰延期的分析介绍一个新UBD计算模型，然后提出bank-to-core与最小的UBD印射和优化算法的核心顺序优化方法。试验性的结果证明我们的途径能从4%～37%减少WCET。

简介：减少硫的功能的部件--吊楔酸硷的对化合物--并且联系活跃沸石部件被开发为在汽油减少硫内容准备RFCC催化剂DOS。催化剂评估的结果表明了酸硷的对化合物在此开发了的吊楔能提高分子的硫由催化剂加重支持desulfurization反应继续的宏的变换，并且酸硷的对化合物能毫无疑问减少的选择沸石和吊楔的合作行动在汽油的石蜡和硫内容。因此开发的催化剂DOS的重油变换能力更高结合了一个提高的电阻到重金属污染在超过20%在汽油减少硫内容。在西诺佩克·久贾恩格·布朗奇公司的这催化剂的商业应用程序表明了与GRV-C催化剂相比，催化剂DOS获得的油泥浆收益在汽油与一种改进coke选择，增加的全部的液体收益，和一个减少的石蜡内容一起被减少。在汽油/硫在的硫的比率喂油能被20.3m%减少。

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简介：一个巢模型系统被把地区性的气候模型RegCM3嵌进一般发行量模型tbr构造在华东上的每月规模的地区性的气候预报。系统的错误为这个区域被提出根据10年(1991-2000)巢模型系统，并且气候预言中心(CPC)的数据集的结果合并了降水(CMAP)的分析和国家气象学的中心(NMC)的温度分析，美国，它然后被使用为时期2001-2005由系统改正原来的预报。在对为每月的降水和surthce空气温度的原来、改正的预报的评价以后，改正的预报比原版显然好，这被发现，建议途径能被申请改进每月规模的地区性的气候动态lbrecast。

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简介：Targetdynamicsareassumedtobeknowninmeasuringdigitalspeckledisplacement.Useismadeofasimplemeasurementequation,wheremeasurementnoiserepresentstheeffectofdisturbancesintroducedinmeasurementprocess.Fromtheseassumptions,Kalmanfiltercanbedesignedtoreducevarianceofmeasurementnoise.Anopticalandanalysissystemwassetup,bywhichobjectmotionwithconstantdisplacementandconstantvelocityisexperimentedwithtoverifyvalidityofKalmanfilteringtechniquesforreductionofmeasurementnoisevariance.

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简介：AbstractObjective:To describe the procedure and results of an adapted closure and reconstruction technique for translabyrinthine surgery that focuses on identifying and managing potential pathways for CSF egress to the middle ear and Eustachian tube.Methods:Retrospective review of a cohort of translabyrinthine acoustic neuroma cases that were reconstructed using this technique.Results:In addition to meticulous packing of potential conduits using soft tissue, hydroxyapatite cement is used to seal opened air cell tracts prior to obliteration of the mastoid defect using adipose tissue. Early results of a small patient cohort using this technique are encouraging and there were no wound infections. There was a single case of CSF rhinorrhea associated with incomplete sealing of opened petrous apex cells, with no recurrence after appropriate implementation of the described protocol during revision surgery.Conclusion:Proactive management of potential conduits of CSF egress including opened air cell tracts has a high likelihood of reducing rates of rhinorrhea and need for revision surgery after the translabyrinthine approach to the posterior fossa.

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简介：Thereisanincreasingtrendforproducingcopper-containingsteels,withcopperbeingeitheraresidualelementfromscrapsoranintentionaladdition,i.e.,inweatheringsteel.Theissueofsurfacehotshortnessoccursduringthehotworkingofsteelscontainingcopper,andasignificantamountofworkhasbeenperformedonthistopic.Thispaperprovidesareviewofrelatedstudiesonthisphenomenon.Theformationmechanism,asanalyzed,istheliquidmetalembrittlementcausedbytheliquidcopperpenetrationintoaustenitegrainboundariesatthemetalsurface,wherethecopperoriginatesfromtheselectiveoxidationofthesteelathightemperature.Onthebasisofthemechanism,moreimportanceisplacedonanalyzingtheeffectonthephenomenonbyvaryingthecontrollingfactors,includingtheheatingprocess,alloyingadditions,anddeformationconditions.Possiblesolutionstotheproblemarefinalized,andsomefurtherworkmustbeperformedinthefuture.

简介：目的:观察针灸治疗萎缩性胃炎的临床疗效.方法:取中脘、足三里穴,用阳中隐阴法治疗38例萎缩性胃炎患者,评定疗效,并与药物组进行疗效比较.结果:针灸组与药物组临床综合疗效比较,有效率分别为81.6%和84.2%,两者统计学处理P＞0.05,临床无显著性差异.结论:表明针灸治疗萎缩性胃炎具有与药物相同的治疗效果.

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