简介：ForforeignersinBeijing,thesportsbarisaspecialplace,aplacetogatherforwatchingmatchesandaplacetofeelthefamiliarityofhome,whileforsomesportsenthusiastsitservesastheirsecondhome.Keyfactorsforsportsbars

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简介：Inthispaper,auniformanalysisoftheasymptoticpropertiesofhighfrequenciesofnon-uniformbars,beamsandcircularmembranesisgivenbyusingperturbationmethod,andthecaseofdiscontinuousphysicalparametersisalsodiscussed.

简介：一台新、创新的基础隔离设备基于作者和他们的同事执行的广泛的研究在这篇论文被介绍。设备的一个原型在摇晃的桌子上被造并且试验性地测试了。新基础隔离设备由二个磁盘，有三水平伸臂支撑的上面的增大的一垂直柱体，和记忆合金(SMA)锁的至少三使倾向的形状组成。SMA酒吧的角色是限制在底和上层建筑之间的相对动议，到由他们的超级橡皮的组成的法律并且到保证浪费体力设备重新集中。验证期望的表演，一个原型在正弦曲线下面被造并且测试与不同振幅增加频率的排水量的波浪。建议基础隔离设备的主要特征是为周期的装载，合金的超级橡皮的行为导致宽负担排水量环，这被显示出，在大量体力被浪费的地方。

简介：本期主题是bars（酒吧）。Ibetsomeofyouguyshitthebarsallthetime,butsomedon＇t.Sotoday,let＇stalkaboutbars.（我肯定你们中的一些人经常泡酒吧，但有些人从没泡过酒吧。那么今天，我们就来谈谈酒吧这个话题。）

简介：ExperimentsareperformedinawaveflumetodemonstratetheBraggreflectionoflineargravitywavesbyartificialbars.Threedifferentartificialbarswithrectangular,triangularandrectifiedcosinoidalshapesareplaceddiscretelyontheseabedformeasurementoftheBraggreflection.Aseriesofexperimentalconditionsincludingthenumberofbars,thepe-riodicbarspacing,thewaterdepthandvariouswaveconditionsaretested.KeyparametersinfluencingtheBraggreso-nancesareinvestigated.Theexperimentaldataarecomparedwiththevaluesfromboththeoreticalandnumericalmodels.Somekeyparametershaveprovedtobeeffectiveindescribingtheprimaryresonances.Predictiveequationsofthecharac-teristicsfortheBraggreflectionareproposedinthispaper.

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简介：Theimpactbucklingofalaminatedcompositebarisinvestigatedincaseofoneofitsendsmovingduetoaxialimpactcompression.Thegoverningequationsconsideringthefirst-ordersheardeformationeffectarederivedbytheHamiltonprincipleandsolvedbythefinitedifferencemethod.ThecriticalaxialshortnessisdeterminedbytheB-Rcirterion.Thegivenexampleisusedtohighlightthein-fluencesofinitialimperfection,impactvelocity,stresswaveandcoupledstiffness.Itisfoundthattheunsymmetricallylaminatedbarhasaquitedifferentdynamicbucklingbehaviourfromthatofthesymmetricallylaminatedbar.

简介：Themicrostructuresaftercastingandextruding,themechanicalpropertiesandelectricalconductivityafterRRAtreatmentofconventionalDCcastingandlowfrequencyelectromagneticcasting(LFEC)7075aluminumalloywereinvestigated.TheresultsshowedthatfinergrainswhichdistributedmorehomogeneouslywasobtainedinLFECingotscomparedwiththoseconventionalDCingots.TheextrudedbarsofLFECalloykeptitsfinegrainfeaturesoforiginalas-caststructure.IntheRRAtreatment,withtheextensionofsecondagingtime,thetensilestrengthandhardnessofalloydecreased,buttheelectricalconductivityincreased.Meanwhile,asthesecondagingtemperatureraised,thephasechangerateinprecipitationalsoincreased.Underthesameconditions,extrudedbarsofLFECalloyhadbetterperformancethanthatofconventionalDCcastalloy.TheoptimumRRAheattreatmentprocesswas120℃/24h+180℃/30min+120℃/24h.TheLFECextrudedbarsacquiredtensilestrength676.64MPa,hardness198.18,andelectricalconductivity35.7%IACSrespectively,whichwerehigherthanthatintheT6temper,indicatingthatanotableRRAresponsetakesplaceinLFECextrudedbars,whosesecond-stepretrogressiontimewas30min,anditwassuitableformassproduction.

简介：河Usri的四曲邻侧沙洲的形态学和生长模式，比哈尔省，印度乘飞机被学习表格在季风前后印射二～三连续的年。在计划，所有这些酒吧是在有下游的尾巴的形状的crescentic。酒吧的中央部分比他们的二结束宽。酒吧表示沉积的脱衣的总数旁边地增加了。举起等高线由突然地切在二邻近的脱衣的连接界定单个脱衣。在横向的侧面，脱衣表演在上面作为步的系列。尽管这个斜坡被这些步打断，酒吧的一般斜坡向邻近的隧道。在3尺寸，所有这些酒吧在下游的结束附近展出雪崩脸。在这张雪崩脸上的酒吧的纵向剖面类似于不均匀的涟漪的侧面，是的庇护脸这张雪崩脸。越过雪崩脸的沟揭示与在个人以内的粒子大小的阶段跨层化跨阶层，类似于在移植涟漪前面产生的特征。当全部酒吧被淹没时，所有这些特征建议曲邻侧沙洲是在高洪水期间下游地移居的大涟漪(宏床形式)。SEPM床形式分类也记录沙丘是有比100m和比5m大的高度大的波长的床形式。亲戚的方程是从Chézy和曼宁方程由Sundborg(个人通讯)锻炼身体排出，被使用了在曲邻侧沙洲建立在相对分泌物和沉积的相对体积之间的一种关系。

简介：高等院校教学质量的提高，不单只是以高素质教师队伍为前提和保证，高效的教务管理也是教学质量的有效保障之一．针对现有高校教务人员绩效考核的不足，提出了基于BARS（行为锚定等级量表法）的有限360度绩效考核以完善教务人员的绩效考核，进而打造高效的教务管理．

简介：有流动上的不同安排密度的纵的酒吧介绍的不同沉没障碍和一个scour洞的形态学的效果在清楚的水条件下面被调查。声学的Dopplervelocimetry(副词)数据被使用阴谋三维的速度和狂暴的轮廓的垂直分布。试验性的结果显示那安排密度(能也代表孔)，结构的材料(灵活或稳固)，并且sidewall效果是影响狂暴的动能和形态学的主要因素搜索洞。为灵活植被，床表面附近的最大的狂暴的动能与安排密度增加了。为一样的结构，深度和scour洞的侧面的扩大的大小也与安排密度增加了。因为偏转和安排密度，灵活植被减少了scour洞的深度。大量scour在结构在灵活植被比作很好那些的固体的在上游、中间的节发现了。多孔的灵活植被的偏转下游地搬运了狂暴的动能，在沉积床附近减少了狂暴的动能，并且增加了酒吧的稳定性。灵活植被酒吧能在正常条件下面保护河岸和一条河的床，使他们成为在河的管理和恢复的一个好其他的图案。

简介：Commerciallyavailablelatticescontainvariouskindsofmorphologicalimperfectionswhichresultingreatdegradationinlattices’mechanicalproperties,therefore,toobtainimperfectioninsensitivelatticestructureisobviouslyapracticalresearchsubject.Hierarchicalstructurematerialswerefoundtobeaclassofpromisinganti-defectmaterials.Thispaperbuildshierarchicallatticebyaddingsoftadhesiontolattice’scelledgesandnumericalresultsshowthatitsimperfectionsensitivitytomissingbarsisminorcomparedwiththeclassiclattice.Softadhesionwithappropriatepropertiesreinforcecelledge’sbendingstiffnessandthusreducethebendingdeformationinlatticecausedbymissingbarsdefect,whichisconfirmedbystatisticalanalysisofnormalizednodedisplacementsofimperfectlatticesunderhydrostaticcompressionandshearloads.

简介：Investigatingthewavefieldnearstructuresincoastalandoffshoreengineeringisofincreasingsignificance.Inthepresentstudy,simulationisdoneofthewaveprofileandflowfieldforwavespropagatingoversubmergedbars,usingPLIC-VOF(PiecewiseLinearInterfaceConstruction)totracethefreesurfaceofwaveandfinitedifferencemethodtosolvevertical2DNavier-Stokes(N-S)equations.AcomparisonofthenumericalresultsfortwokindsofsubmergedbarswiththeexperimentalonesshowsthatthePLIC-VOFmodelusedinthisstudyiseffectiveandcancomputethewavefieldprecisely.

简介：AmethodtoidentifycomplexYoung’smodulusofviscoelasticmaterialsusingforcedlongitudinalvibrationofslenderrodsisproposed.Themethoddiffersfromthebeamone.Experimentaltestswerecarriedoutatroomtemperaturewithdifferentlengthsin108mm,100mm,90mm,83.5mm,80mm.74.5mm,70mmforthepolycarbonatebars,andthecurvesofratiosA2/A1betweentwoendsofaviscoelasticbarversusfrequenciesareobtained,furthermore,thecorresponding3dBbandwidthandthestorageandlossmoduluscanbecalculated.SufficientnumberofobtainedcomplexYoung’smodulusatdifferentfrequencyallowsustocalculateotheronesusingtheleastsquaremethod.Ifthestepofthetestedfrequencyis5Hz,themaximumerrorofresultscanbelessthan6%.Bycomparisonwiththemeasurementmethodswhichthepreviousliteraturementioned,thisnewmethodsimplifiesthecalculation,andthephysicalmeaningappearsapparentlyandclearly.

简介：Toobtainthecompatiblematerialofhighhardnessandhightoughness,Hadfieldsteelmatrixcomposites,reinforcedbyhigh-Crcastironbarsmadeofflux-coredweldingwires,whichwereinsertedintotheHadfieldsteelmelt,wereinvestigated.Themechanicalpropertiesofthreematerials,ie,compositesforas-castandquenching-watercondition,aswellasHadfieldsteel,werecompared.Theresultsshowthatthealloypowderinsideflux-coredweldingwirescanbemeltedbytheheatcapacityofHadfieldsteelmeltandsolidifyintohigh-Crcastironbars.Theimpacttoughnessofthecompositeforquenching-waterconditionishigherthanthatofthecompositeforas-castconditionandislowerthanthatoftheHadfieldsteel,butitcanstillmeettherequirementsofhardnessandtoughnessinindustrialapplication.Regardlessofloadvariation,compositeforquenching-waterconditionshowsbetterwearresistancethanthoseofthecompositeforas-castconditionandHadfieldsteel.ThemodifiedfracturetoughnessandwearresistanceofcompositesareattributedtonotonlythecombiningactionsofHadfieldsteelmatrixandhigh-Crcastironbars,butalsotheeffectofheattreatment.