简介：Anewsystemisdevelopedtorecognizepromotersequencesfromnon-promotersequencesbasedonpositionweightmatrixandbackpropagationneuralnetworkinthispaper.Thesystemperformssignificantlybetteronthetrainingsetandthetestset,themeanrecognitionrateisashighas99%onthetrainingsetand97%onthetestingset.Experimentalresultsdemonstratetheeffectivenessofthesystemtorecognizethepromotersequencesthathavebeentrainedandthepromotersequencesthathavenotbeenseenpreviously.

简介：在这个工作，有为BP神经网络的动量的一个坡度方法被考虑。动量系数以一种适应方式被选择加速并且稳定网络重量的学习过程。相应集中结果被证明。

简介：无

简介：Accordingtothestudyonseat-backcurvesaboutdifferentpeople,themethodthatusingtwoarc-shapedroofstogivebacksupportingforceofthehumanbodyisproposed.Throughacleverdesignapplicationofpiezoelectricsensor,microcontroller,motors,andarc-shapedroofsformaclosedloopcontrolsystem.Throughthedesignofhorizontalandverticaladjustmentmechanism,aflexibleandadaptivemulti-dimensionalbackcanreducetheharmtohumanspinewhichcausedbypoorpostureandsedentarylifestyle.ModelbuildingandstressanalysisaredonebyInventorsoftwaretoverifythemechanismofstrength.

简介：It'snotamiracle.Yousee,hereinJakarta,thereareballbayswhoarealwaysreadytoreturnanygolfbanthathappenstogolost.

简介：

简介：ⅠLowerBackPainLowerbackpainisacommondiseasechar-acterizedbypaininthelumbarregion.Thepainmaybeononesideandmaybeontwosides.Clinically,lowerbackpaincanbefoundinvari-ousdiseasessuchassofttissueinjury,diseasesofthespine,anddiseasesoftheinternalorgans,etc..

简介：100piecesof26650-typeLithiumironphosphate（LiFePO4）batteriescycledwithafixedchargeanddischargeratearetested,andtheinfluenceofthebatteryinternalresistanceandtheinstantaneousvoltagedropatthestartofdischargeonthestateofhealth（SOH）isdiscussed.Abackpropagation（BP）neuralnetworkmodelusingadditionalmomentumisbuiltuptoestimatethestateofhealthofLi-ionbatteries.Theadditional10piecesareusedtoverifythefeasibilityoftheproposedmethod.Theresultsshowthattheneuralnetworkpredictionmodelhaveahigheraccuracyandcanbeembeddedintobatterymanagementsystem（BMS）toestimateSOHofLiFePO4Li-ionbatteries.

简介：针刺阿是穴、肩井、天柱和天宗为主穴，配合疼痛部位拔罐治疗背肌筋膜炎患者29例，经2个疗程治疗，全部有效。

简介：BasedonthecontinuityofthederivativesoftheNon-UniformRationalB-Splines(NURBS)curveandtheJaumannstrainmeasure,thepresentpaperadoptedthepositioncoordinatesofthecontrolpointsasthedegreesoffreedomanddevelopedaplanarrotation-freeEuler-Bernoullibeamelementforisogeometricanalysis,wherethederivativesofthefieldvariableswithrespecttothearc-lengthwereexpressedasthesumoftheweightedsumofthepositioncoordinatesofthecontrolpoints,andtheNURBSbasisfunctionswereusedastheweightfunctions.Furthermore,theconceptofbendingstripwasusedtoinvolvetherigidconnectionbetweenmultiplepatches.Severaltypicalexampleswithgeometricnonlinearitieswereusedtodemonstratetheaccuracyandeffectivenessoftheproposedalgorithm.Thepresentedformulationfullyaccountsforthegeometricnonlinearitiesandcanbeusedtostudythesnap-throughandsnap-backphenomenaofflexiblebeams.

简介：

简介：

简介：

简介：在Changjiang河口的北方经过隧道的背淤泥力量的时间、空间的变化是调查u-sing实验直角的函数(文件结束)方法，与目的到决定强加的进程和时间规模。自从2000年3月，在隧道的每个挖出的单位的back-siltingquantity上的数据被收集了，主要一次15d。背淤泥力量的文件结束分析揭示二个重要模式，它完全解释58。第一个文件结束模式显示出的33%全面变化，和相应过程和time-scales.The是的一个清楚的年度周期由河流的水和输沙量决定了从在上游。第二个文件结束模式揭示在back-siltingstrength和工程活动之间的一种靠近的关系。因为这些过程极大地在这个学习案例中被互连，为41的另外的文件结束模式财务。67%全部的变化不显示出清楚的过程andtime规模。

简介：

简介：Whenthehigh-pressuregasisexhaustedtothevacuumchamberfromthenozzle,theunderexpandedsupersonicjetcontainedwiththeMachdiskisgenerallyformed.Theeventualpurposeofthisstudyistoclarifytheunsteadyphenomenonoftheunderexpandedfreejetwhenthebackpressurecontinuouslychangeswithtime.ThecharacteristicoftheMachdiskhasbeenclarifiedinconsiderationofthediameterandpositionofitbythenumericalanalysisinthispaper.ThesonicjetoftheexitMachnumberMe=1isassumedandtheaxisymmetricconservationalequationissolvedbytheTVDmethodinthenumericalcalculation.ThediameterandpositionoftheMachdiskdifferswiththeresultsofasteadyjetandtheinfluenceonthecontinuouslychangingofthebackpressureisevidencedfromthecomparisonwiththecaseofsteadysupersonicjet.

简介：Thechaoticbehaviorofone-dimensional,2-segmentand3-segmentpiecewise-linearmapsisexaminedbyusingtheconceptofsnap-backrepellersintroducedbyMarottoandtheparametersconditionsofexistenceforsnap-backrepellerareobtained.Simulationresultsarepresentedtoshowthesnap-backrepeller,someperiodicpointsandattractingintervalcycleswithchaoticintervals.

简介：Readingisanimportantchannelforstudentstoreceivesecondlanguage（L2）input,butunmindfulordistractedreadingofferslittletoL2acquisition,whichhelpstoexplainwhylearnersoftencomplainabouttheirminimalprogressaftertakingextensivereadingcourses.

简介：Backconversionisanintrinsicphenomenoninnonlinearfrequencydown-conversionprocesses.However,thephysicalreasonforitsoccurrenceisnotwellunderstood.Here,wetheoreticallyrevealthatbackconversionistheresultofaπ-phasejumpassociatedwiththedepletionofoneinteractingwave.Bysuppressingtheidlerphasejumpthroughadeliberatecrystalabsorption,thebackconversioncanbeinhabited,thusenhancingtheconversionefficiencyfromthepumptothesignal.TheresultspresentedinthisLetterwillfurthertheunderstandingofnonlinearparametricprocessesandpavethewaytowardthedesignofhighlyefficientdown-conversionsystems.

简介：目的：调查加拿大针灸从业人员对针灸治疗急性腰痛的有效性及相关费用的认识，从而确定针灸在急性腰痛治疗中的应用情况。方法：于1996年9月对安大咯加拿大针灸基金会的285名会员发放问卷，只对内科医生及理疗医生的反馈问卷进行统计分析。结果：281名符合条件的会员，197名完成了问卷（回收率70．1％），45．0％为内科医生，55．0％为理疗医生。其中87．0％的人过去使用过针灸疗法治疗急性腰痛，66．O％的人调查时正在使用，87．0％的人表示将来会继续使用。87．0％的反馈者认为针灸治疗急性腰痛是有效的，60．0％的人认为针灸疗法可以阻止急性腰痛的发展。针灸平均每次费用为$28，必需的平均治疗次数为5．7次。结论：多数反馈者对针灸治疗急性腰痛持肯定态度，他们在临床上也经常使用针灸疗法治疗此病。绝大多数反馈者认为针灸治疗急性腰痛是有效的。此外，超过一半的反馈者相信针灸可以阻止急性腰痛的病情发展。虽然本研究调查的针灸从业者坚信针灸治疗急性腰痛是有效的，但需要高质量的大样本调查予以验证。