简介：<正>PresidentXiJinpingputforwardtheterm"SilkRoadEconomicBelt"onSeptember7th,2013inKazakhstanwhenheproposedinhisspeech"toforgeclosereconomicties,deepencooperationandexpanddevelopmentspaceintheEurasianregion,weshouldtakeaninnovativeapproachandjointly

简介：追溯历史，1890年，WilliamStewartHalsted成为约翰-霍普金斯医院的第一任外科主任，并创建了外科住院医师培训体系，改写了外科教育历史。此前，美国并无正式的临床医生培训体系，有志于外科的医科毕业生或自学，或拜师学艺。Halsted提出的“Seeone,Doone,Teachone”模式[1]的目的，是使住院医师在训练中逐步增加业务难度，锻炼能力，积累经验，最终独当一面。Halsted创建该系统时，不仅着眼于外科医生的训练，亦关注于他们日后成为老师的培训。一个正规的培训体系，是确保先进外科技术传承与传播的唯一方法。

简介：经过八年的设计和缜密的检测程序，这座位于曼哈顿中心的one57高层住宅即将竣工。Christiandeporlzamparc事务所根据当地规范，将建筑设计成不规则的L形，成为纽约最高的住宅。

简介：Weproposeaphotonicstructurestackedsequentiallybyone-dimensionalphotoniccrystalsandcavities.Thewholestructureiscomposedofsingle-negativeanddouble-negativematerials.TheopticalWannier–Starkladder(WSL)canbeobtainedinalowfrequencyregionbymodulatingthewidthsofthecavitiesinorder.Wesimulatethedynamicalbehavioroftheelectromagneticwavepassingthroughtheproposedphotonicstructure.Duetothedispersivecharacteristicsofthemetamaterials,averynarrowWSLcanbeobtained.Thelong-periodelectromagneticBlochoscillationisdemonstratedtheoreticallytohaveaperiodonamicrosecondtimescale.

简介：Tworecentstudieshavediscoveredasurprisinglinkbetweenthreeseeminglydifferentclinicaldiseases:onethatdestroysbonemarrow,anotherthatpreventssundamagefrombeingrepaired,andathirdwhichcauseschildrentoshowsignsofagingextremelyearly.Ithasbeenfoundthatallthreediseasesarecausedbymutationsinthesamegene.Mutationscomeinanumberofdifferentflavors,

简介：Inthisstudy,aerodynamicbehaviorsofsweptandleanedbladeswereinvestigated.Axialandtangentialbladecurvaturesimpactsoncompressor'soperatingparameterswereanalyzedseparately.AcommercialCFDprogramwhichsolvestheReynolds-averagedNavier-Stokesequationswasusedtofindoutthementionedimpactandthecomplicatedflowfieldoftransoniccompressor-rotors.TheCFDmethodthatwasusedforsolvingflowfield'sequationwasvalidatedbyexperimentaldataofNASARotor67.Theresultsshowedthatthecompressorwithcurvedrotorshadhigherefficiency,rotorpressureratioandstableoperatingrangecomparedtothecompressorwithun-curvedrotors.Usingcurvedrotorsmostlyhadhigherimpactontheoverallstableoperatingrangecomparedtotheotheroperatingparameters.Operatingrangeinvolveschokingpointandstallpointthatwerechangedseparatelybyusingofbendedblade.Forfindingthedetailedimpactofsweepandleanangleontransonicblades,variousformsofleanandsweepangleswereexertedtobasicrotor.Itwasfoundthatsweepanglesincreasedoveralloperatingrangeupto30%,efficiencyupto2%andpressureratioupto1%.Leaningthebladesincreasedthesafeoperatingrange,thepressureratioandefficiencyby14%,4%and2%respectively.

简介：Byusingthecoupledclustermethodandthenumericaldensitymatrixrenormalizationgroupmethod,weinvestigatethepropertiesofthequantumplateaustateinanalternatingHeisenbergspinchain.Intheabsenceofamagneticfield,theresultsobtainedfromthecoupledclustermethodanddensitymatrixrenormalizationgroupmethodbothshowthatthegroundstateofthealternatingchainisagappeddimerizedstatewhentheparameterαexceedsacriticalpointαc.Thevalueofthecriticalpointscanbedeterminedpreciselybyadetailedinvestigationofthebehaviorofthespingap.Thesystemthereforepossessesanm=0plateaustateinthepresenceofamagneticfieldwhenα>αc.Inadditiontothem=0plateaustate,theresultsofdensitymatrixrenormalizationgroupindicatethatthereisanm=1/4plateaustatethatoccursbetweentwocriticalfieldsinthealternatingchainifα>1.Themechanismforthem=1/4plateaustateandthecriticalbehaviorofthemagnetizationasoneapproachesthisplateaustatearealsodiscussed.

简介：这篇论文集中于与一个帮助DP的绳索系统装备的一个半能沉入水中的平台的研究。基于帮助DP的绳索系统的工作原则和平台运动的模型，一个时间域模拟程序被使用分析影响在一线失败的情况中，在平台运动上，驱动推进器和系在的线的紧张的消费。结果显示出那，在10年的风下面主导，一线失败几乎没在系在的线的紧张上有很少影响。当失败线是上风的时，电源消费将与精确性的一个削弱的位置极大地增加。然而失败线是什么时候下风，电源消费将与精确性的一个部分加强的位置被减少。

简介：在经过了14年的游戏机禁令之后，微软Xbox0ne终于得以在中国市场正式销售，而索尼国行PS4也正在布局之中。并预计年底或明年初与中国玩家见面．但一系列问题也随之而来：锁区7价格7中文游戏7捆绑服务7从用户、市场和内容三个层面来看，XboxOne、PS4入华的破冰之旅并不容易，要想在中国市场茁壮成长更是难上加难．

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.

简介：Theemergingperfect-absorbermetamaterials(PAMs)provideanalternativematerialapproachforthenextgenerationofelectromagneticdetectionatanyfrequencybandofinterest.Onetypeofdualcross-shapedPAMsisdevelopedtoobtainmultiplex-bandspectrumabsorptionatmid-infraredregion.Threedistinctabsorptionpeaksareattributedtothepolarizationsensitivityexcitationoftheplasmonicresonance.Thechargedensitydistributions,whichareexcitedbyresonantelectromagneticwavespassingthroughthePAMsmedium,provideinsightsintotheobservedabsorptionbehavior.WefindthattheretrievedopticalpropertiesofthePAMsincludingpermittivityandpermeabilityarestillconsistentwiththesumoftheDrudeandLorentztypemodelsatwavelengthsrangingfrom2.0to10.0mm.Suchmultiplex-bandabsorptionpropertiesenabletheproposedPAMsapowerfultoolforthedirectdetectionofmultiplemolecularvibrationalstructures,andformultiplespectrainfrareddetection.

简介：这研究表明一出新奇一步舞在与搏动的DC电压包含苯胺单体和苯乙烯丙烯酸的乳剂(SAE)的酸磷酸盐电解质在镁合金上制作厚bilayer涂层的电气化学的方法。形态学，XRD和bilayer涂层由内部氧化物层和外部polyaniline(PANI)组成的FTIR结果表演/SAE合成的层。bilayered结构从联合苯胺，SAE的electrophoretic免职(EPD)和镁合金底层的血浆电解质氧化(PEO)的electropolymerization(EPM)的一个混合过程完成了结果，这被相信。电气化学的腐蚀测试显示bilayer涂层能在3.5wt.%NaCl答案提供优异腐蚀保护给镁合金底层。

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简介：AnewmethodtotheproblemoffairingplanarcubicB-splinecurvesisintroducedinthispaper.Themethodisbasedonweightedprogressiveiterativeapproximation(WPIAforshort)andconsistsoffollowingsteps:findingthebadpointwhichneedstofair,deletingthebadpoint,re-insertinganewdatapointtokeepthestructureofthecurveandapplyingWPIAmethodwiththenewsetofthedatapointstoobtainthefairedcurve.Thenewsetofthedatapointsisformedbytherestoftheoriginaldatapointsandthenewinsertedpoint.Themethodcanbeusedforshapedesignanddataprocessing.Numericalexamplesareprovidedtodemonstratetheeffectivenessofthemethod.

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简介：TheYangziPetrochemicalCompanyisthefirstoneamongdomesticaromaticsmanufacturerstoadopttheUOP’slatestnoveladsorbentduringqualityupgradingofitsNo.2xyleneunit.OnOctober23,2013thisunithasbeencontinuouslydeliveringxyleneproductwithapurityof

简介：Aciladivaricata(Hinds,1843)andA.mirabilis(AdamsandReeve,1850)arecommonbenthicbivalvesinChina.Anumberofresearchershaveproposedthatthelatterspeciesisajuniorsynonymoftheformerspecies.Becauseofmorphologicalsimilarities,itisdifficulttodistinguishthesetwospeciesbasedonvisualexaminationonly.Forbetterunderstandingoftheirtaxonomy,themitochondrialCOIgenefragmentsoffiveindividualsofA.divaricatafromtheEastChinaSeaandsixindividualsofA.mirabilisfromtheYellowSeaweresequencedinthisstudy.ThephylogeneticrelationshipsoftheobtainedCOIsequences,togetherwithnineteensequencesofthreespeciesofthegenusNucula,wereanalyzed.Thepairwiseintra-andinter-specificdistancesfortheCOIsequencesrangedfrom0.002to0.017andfrom0.128to0.134,respectively,andnooverlapwasfound.Phylogenetically,A.divaricataandA.mirabilisformdistinctcladesandclusterintoasistertoallotherNuculaspecies.TheresultsindicatedthatA.divaricataandA.mirabilisaretwodistinctspecies.Thedifferencesinthemorphologyanddistributionbetweenthetwospecieswerebrieflydiscussed.

简介：Thisisafollowofpreviousworkentitled"OneElectronAtominSpecialRelativitywithdeSitterSpaceTimeSymmetry"[Commun.Theor.Phys.57(2012)930].Inthispaper,weconsiderthehigherordercalculationsandcontributionsinthepreviousframeworktosolveoneelectronatomsindeSitterinvariantrelativisticquantummechanics.Thenext-to-leading-ordercalculationsin1/R2-expansionsshowthatthefine-structureconstantαisvariantwithcosmologictimegoingbyinthedeSitterinvariantspecialrelativisticquantummechanicswithstandardFRWcosmologicmodel.

简介：瑞士电力与自动化技术巨头ABB近日公布2013年第3季度财务业绩。据财报显示，受到收购美国逆变器制造商Power-One的驱动，ABB三季度营收同比增长10％。

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