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简介：

简介：动作描述：身体呈后置支撑的姿势，身体呈一条直线（图1）。

简介：为一个常规短期的设计配方的紧张腿站台(TLP)设计焦点的典型工业实践，它假设N年设计环境导致N年回答。在基于反应的设计方法，TLP被设计承受N年回答而非对N年环境条件作出回应。在这份报纸，我们在场为基于反应的设计方法和使用的概述和一个一般过程比较在二个方法之间的批评TLP回答的案例研究。我们的比较的结果证明常规短期的设计方法经常包含保守主义的一个元素并且基于反应的设计方法能减少设计条件并且从而完成费用积蓄。

简介：芝加哥TARP(隧洞和水库规划)第一期工程地下段经过30年隧洞挖掘终于即将完工。随着6月中旬该施工段的第一段隧洞贯通。深挖隧洞即将到达LittleCalumetLeg。

简介：ThesolutionfortheDuffingequationinanonlinearvibrationproblemisstudiedinthispaper.Clearly,inthecaseoftheperturbparameterbeingalargervalue,thetraditionalperturbationmethodisnolongervalidbuttheHomotopyPerturbationMethod（HPM）isapplicableusually.HPMisusedtosolvetheweakandstrongnonlineardifferentialequationsforfindingtheperturbedfrequencyoftheresponse.TheobtainedfrequenciesviaHPMandtheapproximatemethodhavegoodaccordanceforweakandstrongnonlineardifferentialequations.Additionally,thecalculatedresponsesbyuseoftheapproximatemethodarecomparedwiththeresponsesobtainedfromtheNumericalmethodinthetimehistoryoftheresponseandphaseplane.Theresultsrepresent~oodaccordancebetweenthem.

简介：Thecentralpostisoneofthecriticalcomponentsforthelowaspectratiotokamak,whichenduresnotonlyatremendousohmicheatingbecauseitcarriesaratherhighcurrent,butalsoalargeneutronheatingandirradiationowingtotheplasmaoperation.TheDScopperalloyGlidcopAL-25[8]waschosenastheconductormaterialforitsadequatemechanicalpropertiesandphysicsproperties.Thecentralposthasacylindricalstructurewithlotsofcoolingchannels.Thelengthofthecentralpostforthenextgenerationofnuclearfusionsphericaltokamakswillbemorethan10mor20m.Thestructuralstabilityisverycrucial.Whentheappliedloadislargerthanthestructurecriticalbucklingload,thedevicewillloseitsstabilityandcollapse.Inordertocal'culatethecriticalbucklingload,a1/6-segmentfiniteelementmodelwasusedandtheforceactingonthecentralpostwassimulated.Theresultsshowedthattheverticalcompressivestressesmainlyaffectthestabilityofthecentralpost.Thelinearbucklinganalysisresultswithfiniteelementmethodbasedonsmalldeformationtheoryweregiveninthispaper.Therelationcurvesandfunctionsforbucklingfactor,dependingonthedifferentlengthsandtheradiusofthecentralpost,thediameterofcoolingchannelandthemaximumallowablecurrentdensity,werealsoshown.

简介：Inthispaperweinvestigatedhowtherunningspeedwouldaffectthedynamicsofbodypitching,andwhetherbodyinertiaisimportantforanimals.Passivetrottingofspring-massmodelandpassiveboundingofspring-beammodelwerestudiedatdifferentspeedsfordifferentsetsofbodyparametersrespectively.Furthermore,differentbodyinertiaswereusedinbounding.Wefoundthatrunningspeedexertseffectonlegperformancebymeansofcentrifugalforce.Thecentrifugalforcecanbeunderstoodasanenhancementtothenaturalfrequencyofthespring-masssystem.Thedisadvantageofbodypitchingmaybeoffsetbythegreatincreaseincentrifugalforceathighspeed.Theresultsalsorevealthatbodymassdistributionmightnotbethemainreasonforthedifferenceinmaximalrunningspeedsofdifferentanimals.

简介：Thispaperisconcernedwiththeerrorbehaviourofone-legmethodsappliedtosomeclassesofone-parametermultiplestiffsingularlyperturbedproblemswithdelays.WederivetheglobalerrorestimatesofA-stableone-legmethodswithlinearinterpolationprocedure.

简介：Purpose:Thisstudywasdesignedtocharacterizeandcomparethevertical(kvert)andleg(kleg)stiffnessmeasuredduringrunningintwodifferentfootwearconditionsonnegative,level,andpositiveslopes,usingkinematicdataonly.Methods:Fourteenmalerecreationalrunners(age23.44.4years,height177.55.2cm,andbodymass69.55.3kg)weretestedon2separatedayswithin1week.Ateachsession,subjectsranseven5-mintrialsonatreadmillat10km/h,interspersedwith5minofsittingpassiverecovery.Eachtrialwasperformedonadifferentslopegradient,rangingfrom8%(downhill)tot8%(uphill),assignedinarandomorder.Furthermore,eachsubjectranone5-mintrialwearingminimalshoes(MS)andthesubsequenttrialwearingtraditionalshoes(TS)inacounterbalancedrandomizedorderensuringthateachslopewasranonceinMSandonceinTS.Kinematicdatawerecollectedusingaphotocellmeasuringsystemandhigh-speedvideocamera,withkvertandklegstiffnessbeingcalculatedfromthesedata.Results:Legcompression,contacttimes,andverticaldisplacementofthecenterofmassduringrunningweresignificantlysmallerinMScomparedtoTSacrossallslopes.Inthetwofootwearconditions,stepfrequencysignificantlyincreasedwitha(positive)increaseinslope.KinematicanalysesindicatedthatklegwasgreaterwhenrunninginMSthanTSandthisbetween-footweardifferenceremainedsimilaracrossslopes.Onthecontrary,kvertdidnotchangeonthebasisoffootwear,butincreasedwithpositiveincreasesinslope.Conclusion:Thisstudyshowedthatkvertandklegduringrunningresponddifferentlytochangeinfootwearand/orslope.Thesetwostiffnessmeasurescanhenceprovideauniqueinsightonthebiomechanicaladaptationsofrunningundervaryingconditionsandtheirrespectivequantificationmayassistinfurtheringourunderstandingoftraining,performance,and/orinjuryinthissport.

简介：Theparallelalgorithmsofiterateddefectcorrectionmethods(PIDeCM’s)areconstructed,whichareofefficiencyandhighorderB-convergenceforgeneralnonlinearstiffsystemsinODE’S.AsthebasisofconstructinganddiscussingPIDeCM’s.aclassofparallelone-legmethodsisalsoinvestigated,whichareofparticularefficiencyforlinearsystems.

简介：昆虫手足在变形期间从想象的圆盘或幼虫的腿发展。涉及发展从的分子的机制对成年的腿幼虫糟糕被理解。此处，我们克隆从Bombyxmori(Bmrn)圆胖的锌手指基因的完整的长度，它包含了1419bp开的读框架，并且编码了473氨基酸蛋白质。反向的抄写聚合酶链反应和西方的污点分析证明Bmrn比在测试的另外的纸巾在外皮在高水平被表示，并且它在变形期间显示出很高的表示水平。生产的Bmrn击倒在跗骨和pretarsus背叛包括tarsomeres的熔化和减小，并且pretarsus的发展拘捕。而它在果蝇的相应基因被显示了影响三个跗骨的片断(t2-t4)，我们的数据证明Bmrn涉及跗骨和pretarsus的形成，建议改变腿包含了在在进化期间的基因规定的patterning的变化。

简介：<正>Background:Stochasticresonancestimulation(SRS)transmitssubsensoryelectricalGaussianwhitenoiseintothebodytoenhancesensorimotorfunction.Thistherapyhasimprovedstaticsinglelegbalanceinsubjectswithfunctionalankleinstability.However,theeffectofthisstimulationondynamicsinglelegbalanceisnotknown.ImprovementsindynamicsinglelegbalancewithSRSmayhaveimplicationsForenhancingfunctionalrehabilitationforankleinstability.Thus,thepurposeofthisstudywastodeterminetheeffectsofSRSondynamicsinglelegbalanceinsubjectswithfunctionalankleinstability.Methods:Thisstudywasanexperimentalresearchdesignanddatawerecollectedinasportsmedicineresearchlaboratory.Twelvesubjectswithfunctionalankleinstability(69±15kg;173±10cm;21±2years)reportedahistoryofanklesprainsandinstabilityattheanklewithphysicalactivity.Asinglelegjump-landingtestwasusedtoassessdynamicbalance.Subjectswererequiredtojumpbetween50%and55%ofthemaximalverticaljumpheight,landonasinglelegatopaforceplate,andstabilizeasquicklyaspossible.Jump-landingtestswereperformedwithandwithoutSRS.Threetrialswereperformedforeachtreatmentcondition(SRSandcontrol).Arandomizedblockdesignwasusedtodeterminetestorder.Anterior/posteriorandmedial/lateraltime-to-stabilizationwerecomputedtoassessdynamicbalance.Lessertimeindicatedbetterstability.One-tailedpairedsamplesttestswereusedforanalysis(α≤0.05).Results:SRSimprovedanterior/posteriortime-to-stabilization(stochasticresonance=1.32±0.31s,control=1.74±0.80s,p=0.03),butdidnotenhancemedial/lateraltime-to-stabilization(stochasticresonance=1.95±0.40s,control=1.92±0.48s,p=0.07).Conclusion:CliniciansmightuseSRStofacilitatebalanceimprovementswithsagittalplanedynamicsinglelegbalanceexercisesthatpatientsmaynotbeabletoperformotherwise.

简介：客观：由使用不同拍动和外部fixators探索严重的胫骨的柄破裂的重建的一个好方法。方法：有42.5年的平均年龄的TypeIIIC胫骨的柄破裂的85个病人从1990to2005在我们的医院里被对待。损害被摩托车事故在66个病人引起，由在16patients的机器事故，并且由在3个病人的石头伤痕。管理过程由抗菌素的管理组成了，连续debridment，骨头grafting如果需要，不同拍动的申请例如免费thoracoumbilical拍动，fasciocutaneous拍动，saphenousneurocutaneous脉管的拍动，suralneurocutaneous脉管的拍动和gastrocnemius肌肉发达的拍动，和不同外部固定，例如一半戒指fixators，单方的轴的动态fixators，AOfixators，Weifangfixators，和混合fixators。一般水准列在后面在上面是6.3年。结果：所有拍动幸存。83个盒子把骨头愈合。平均骨头不同外部固定的愈合的时间是在有一半戒指fixators的47种情况中的5.5个月，在与单方的轴的动态fixators对待的4种情况中的9.2个月，在有AOfixators的6种情况中的8.5个月，在有Weifangfixators的16种情况中的10.7个月，并且在有集会fixators的10种情况中的7.8个月。除了一半戒指固定，另外的固定都需要必要骨头接枝。二个盒子与骨头不属于工会、开发的单方的轴的动态fixatorshad对待骨髓炎。创伤由灰浆在thefixators和固定的移动以后愈合了。最后在显示出的检查上面列在后面脚关节和膝运动是正常的，没有疼痛被注意。结论：一半戒指的联合有各种各样的拍动的外部fixators为类型IIIC胫骨的柄破裂提供好结果。

简介：在探索了延期的数字答案的研究上集中微分方程。数字方法的线性稳定性；一个腿方法的申请；错误分析。

简介：<正>Background:Short-legwalkingbootsareacommoninterventionforacuteandchroniclowerextremityinjury.Fewstudieshaveexaminedtheneuromuscularadaptationsassociatedwithshort-legwalkingbootsandnopreviousstudyhasinvestigatedtimingcharacteristicsofmuscleactivationduringgait.Thepurposeofthecurrentstudywastoexaminethetimingandamplitudesofmuscleactivationoftheextrinsicanklemusculatureduringwalkingintwotypesofshort-legwalkingboots.Methods:Elevenhealthyyoungadultsperformedfivelevelwalkingtrialsataself-selectedpaceineachofthreeconditions:normalwalking.GaitWalkerandEqualizershort-legwalkingboots.Groundreactionforceswerecollectedfromaforceplatformwhilesurfaceelectromyography(EMG)wascollectedfromthetibialisanterior,peroneuslongusandmedialgastrocnemius.EMGsignalswererectifiedandsmoothedusingtherootmeansquaredwitha20-mssmoothingwindowandwerenormalizedtothelargestmeanofthenormalwalkingtrials.Arepeatedmeasuresanalysisofvariancewasusedtoassesstheeffectofshort-legwalkingbootsontheonset,durationandamplitudeofmuscleactivation.Results:Short-legwalkingbootsweregenerallyassociatedwithearlieronsetsofmuscleactivationandlongerdurationsofmuscleactivation.However,therewasnoreductioninEMGamplitude.Conclusion:Thefindingsofthisstudyshowthattheinducedalterationsinmuscleactivationpatternsmaylimittheshort-legwalkingboots.

简介：腱垂直地系在因此，物理腱压力的深理解要求的紧张腿平台(TLP)腱的全部的轴的变丑的决心，它是举，沥青，和澎湃的回答的联合。TLP的侧面的方面的垂直运动被结合巨浪并且组成沥青运动的部分。腱被连接到TLP的方面；因此，侧面的方面的全部的排水量与腱和全部的轴的压力的全部的变丑有关。因此，在TLP的方面调查全部的垂直反应是必要的。在自由的各种各样的度之间联合没在反应振幅操作员(RAO)被考虑。因此在频率领域分析，估计的垂直RAO是不完全的。在时间领域，另外，在TLP的中心的仅仅举运动典型地被学习；这个问题需要被处理。在这份报纸，我们在频率和时间领域在TLP的方面在垂直反应调查沥青运动的部分。数字结果在一些时期范围在TLP的边的垂直运动表明沥青运动的重要效果。

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简介：在原22000m3LPG船的基础上,进行了全面的优化设计,研发设计了满足最新规范规则要求的新一代21000m3LEG（液化乙烯）运输船.从结构设计着手,以21000m3LEG船为主要研究对象,从结构布置、规范校核、建造工艺等多方面进行了研究.对液化气船（C型舱）结构设计需要考虑的几个重点方面作出论述：船体梁结构强度计算校核,确定船体梁剖面模数;有限元直接强度计算,评估构件强度、疲劳寿命;全船振动分析和局部振动分析,确保船员的居住舒适性和船体构件的稳定可靠性;液化气船特有的船体结构温度场分析,得到温度分布并确定钢材级别等.对全船结构进行了大量优化改进工作,解决了设计中碰到的难点.推出一个优秀的设计方案,使该船结构更可靠,加工建造更为便利,提升了该船的市场竞争力.

简介：Deep-waterregionsoftenhavewindsfavorableforoffshorewindturbines,andfloatingturbinescurrentlyshowthegreatestpotentialtoexploitsuchwinds.Thisworkestablishedproperscalinglawsformodeltests,whichwerethenimplementedintheconstructionofamodelwindturbinewithoptimallydesignedblades.Theaerodynamic,hydrodynamic,andelasticcharacteristicsoftheproposednewmulti-columntension-leg-typefloatingwindturbine(WindStarTLPsystem)wereexploredinthewavetanktestingofa1:50scalemodelattheStateKeyLaboratoryofOceanEngineeringatShanghaiJiaoTongUniversity.Testswereconductedunderconditionsofstillwater,whitenoisewaves,irregularwaves,andcombinedwind,wave,andcurrentloads.Theresultsestablishedthenaturalperiodsofthemotion,damping,motionresponseamplitudeoperators,andtendontensionsoftheWindStarTLPsystemunderdifferentenvironmentalconditions,andthuscouldserveasareferenceforfurtherresearch.