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简介：LedbyfourgenerationsofleadershipfromlateProf.JIANGSichang(academician,ChineseAcademyofEngineering),Prof.YANGWeiyan(HonoraryPresident,DivisionofOtolaryngologyHeadandNeckSurgery,ChineseMedicalAssociation),Prof.HANDongyi(PresidentElected,DivisionofOtolaryngologyHeadandNeckSurgery,ChineseMedicalAssociation)tonowProf.YANGShiming(President,DivisionofOtolaryngologists,

简介：摘要高模量沥青混凝土在国内尚无成熟的施工工艺和相应权威的检测标准。本文结合阿尔及利亚东西高速高模量沥青混凝土的施工经验，对高模量沥青混凝土在施工中的应用做如下总结，为类似工程提供积极的借鉴意义。

简介：摘要随着交通量、车辆轴载的不断增加，交通渠化程度的不断提高，以及持续高温天气的综合影响，车辙问题日益严重，成为高速公路沥青混凝土路面最严重的早期病害之一。车辙的产生会影响路面的平整度，削减面层以及路面结构的整体强度，降低路面的抗滑能力，甚至会由于车辙内积水而影响高速行车时的安全性，还可能影响车辆在超车或变更车道时的操作稳定性。

简介：摘要路基是路面结构的支撑体，而路基回弹模量是其主要的控制参数，因此对回弹模量的检测极其重要。目前主要的检测方法有现场承载板法、贝克曼梁法、现场CBR法、FWD法等4种方法。本文在综述国内外路基回弹模量检测技术研究的基础上，阐述了各种检测方法特点、各种检测方法的优缺点、相应的改进方法。

简介：摘要：在评估我国路面的表面设计、施工质量和性能时，路基回弹模量是反映路基承载能力的主要机械参数，直接影响路面表面的厚度。因此，路基回弹模量的研究具有重要意义同时，每个路基回弹模量的结构指标和回弹模量会出现不一致的现象。因此，为了寻找一种快速、方便、实用的反射模块测试方法，应方便地控制结构设计和应用，以控制路面结构的质量。

简介：摘要:为有效保证路基的填筑质量，通常采用贝克曼梁法、荷载板法、 FWD法和贯入度测试仪等方法对路堤的弹性模量进行检测。为了更好地提高路基回弹模量的测试技术，依据已有的理论成果，结合工程实践，开展了多种检测方法的对比分析。研究表明：与传统的静力试验（贝克曼梁法）相比，动力试验（FWD）能更准确、更有效地表征填筑材料的填筑效果。

简介：Lightweightdesignisoneofthedevelopmenttrendsoftheautomobileindustry.AneffectivewaytoachievelightweightautobodiesistouseAHSS(advancedhighstrengthsteel)forthesafetycomponentsofautomobiles.ThisstudyhastakendoorsillreinforcementsmadeofmartensiteAHSSastheobject,andperformedresearchontheAHSSrollformingtechnologiesandprototypedevelopmentoftypicalasymmetricopencomponents.Bymeansoffiniteelementanalysis(FEA)andsimulation,studieshavebeencarriedoutonthespringbackandedgewavedefectsduringAHSSrollforming,andanoptimizedprocessdesignhasbeenachieved.Thegenerationmechanismsofverticalbows,horizontalcambers,twists,pre-punchedholedistortionandcutendflarehavebeenanalyzed,andsolutionstothesedefectshavebeengiven.Inaddition,tesingoftherollformingprocessforAHSShasbeenconductedandtypicalsampleswithrequireddimensionalaccuracyhavebeenmanufactured.Thisstudyhasprovidedtechnicalsupportforthelarge-scaleapplicationofAHSS.

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简介：Large-scaleMIMO(multiple-inputmultiple-output)systemswithnumerouslow-powerantennascanprovidebetterperformanceintermsofspectrumefficiency,powersavingandlinkreliabilitythanconventionalMIMO.Forlarge-scaleMIMO,thereareseveraltechnicalissuesthatneedtobepracticallyaddressed(e.g.,pilotpatterndesignandlow-powertransmissiondesign)andtheoreticallyaddressed(e.g.,capacitybound,channelestimation,andpowerallocationstrategies).Inthispaper,weanalyzethesumrateupperboundoflarge-scaleMIMO,investigateitskeytechnologiesincludingchannelestimation,downlinkprecoding,anduplinkdetection.Wealsopresentsomeperspectivesconcerningnewchannelmodelingapproaches,advanceduserschedulingalgorithms,etc.

简介：随机的地震倒置是geostatistics和从地震记录，井木头，和geostatistics把信息集成到表面下的模型的以后的概率密度功能(PDF)的地震倒置技术的联合。Markov链蒙特卡罗(MCMC)方法被用来取样以后的PDF，表面下的模型特征能被分析推断一套以后的PDF样品。在这份报纸，我们首先介绍随机的地震倒置理论，讨论并且分析四个关键参数：地震数据signal-to-noise比率(S/N)，variogram，以后的PDF样品数字，和井密度，并且建议这些参数的最佳选择。分析结果证明地震数据S/N调整在地震数据的影响之间的妥协，倒置上的geostatistics结果，variogram控制倒置结果的光滑，以后的PDF样品数字决定统计特征的可靠性源于样品，并且很好，密度影响倒置无常。最后，在随机的地震倒置之间的比较和确定的模型基于地震倒置显示随机的地震倒置能提供表面下的特性的更可靠的信息。

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简介：Inordertoovercomethepoorlocalsearchabilityofgeneticalgorithm,resultinginthebasicgeneticalgorithmistime-consuming,andlowsearchabilityinthelateevolutionary,weusethegraycodinginsteadofbinarycodingatthebeginningofthecoding;weusemulti-pointcrossovertoreplacetheoriginalsingle-pointcrossoveroperation.Finally,theexperimentshowsthattheimprovedgeneticalgorithmnotonlyhasastrongsearchcapability,butalsothestabilityhasbeeneffectivelyimproved.

简介：DriftmarkedChina-Japantiesinmostpartofthe1990s,accompaniedwithwildswings.Thelastdecadeofthe20thcenturywitnessedthecommemorationofthe20thanniversary(1972-1992)ofdiplomaticnormalization,the50thanniversary(1945-1995)ofthevictoryoftheWarofResistanceAgainstJapaneseAggression,thefuroroverthe"NoWardecision"inJapan,andtheshockwavesfromthereorientationofJapan-U.S.relationshipin1996andtherevisionoftheguidelines

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简介：AbstractMandibular condylar fractures are among the most common facial fractures and some of the most difficult to manage. Opinions about the management of mandibular condylar fractures differ among surgeons. With the implementation of new technology, an increased understanding of fracture management, and better functional and morphological outcomes reported in the literature, open reduction and internal fixation is becoming many surgeons’ preferred choice for the treatment of condylar fractures. Because surgical treatment of such fractures is complex, certain factors must be considered to achieve satisfactory outcomes. In this article, we summarise six key points in the management of mandibular condylar fractures: virtual evaluation of condylar fracture, a suitable surgical approach, good reduction, stable internal fixation, repair of the articular disc, and restoration of the mandibular arch width. We believe that these points will help to improve the prognosis of mandibular condyle fractures.

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简介：Densechromiumsesquioxiderefractorieshavewidelybeenusedinthekilnsformakingalkai-freeandanti-alkaliglassfibersduetotheirexcellentre-sistancetomoltenglasses.Densificationsofchromiumsesquioxideduringsinteringcanbeblockedbyevaporationofchromiumtrioxidederivedfromoxidationathightemperature,Inthispaperthemech-anismofsinteringchromiumoxideandtheprocess-ingtechniqueformakingdensechromiumsesquiox-iderefractoriesarediscussed.Aprocessinlaboratoryscaleformakingdensechromiumsesquioxidebricksisdemonstrated.