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简介：TheJournalofBionicsEngineeringaimstopublishhighqualityoriginalpapersontheimportantsubjectsofbionicengineeringandrelatedtopics.Itisaninternationalforumofhighqualityformultidisciplinarycommunicationsontopicswhichwillinclude:thefundamentalunderstandingofanimalsandplantsforbionicandbiomimeticengineering;mechanical,manufacturing,materials,chemical,medicalandagriculturalengineering;informationandcontroltechnology;constructionandmechanics;locomotion;design;textiletechnology;architecture,buildingdesignsandplanningofthebuiltenvironment;andsystemsintegrationrelatingdirectlytobionicsandbiomimetics.

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简介：SichuanUnverstyofScience&Engineering(SUSE)undertheLawofHigherEducationofPRC,wasconstitutedinApril2003atthemergeroffourinstitutions:SichuanInstituteofLightIndustryandChemicalTechnology,ZigongTeacher'sCollege,ZigongPolytechnicCollegeandZigongEducationCollege.

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简介：-Thispaperdiscussestheapplicationoffractaldimensionandfractalsinoceanengineering.Tohandlesomeoceanenvironmentproblems,theexistingfractalmethod,inwhichthefractaldimensionisaconstant,canbeused.Forsomecomplicatedproblemsinoceanengineering,thispaperpresentstheconceptofthevariabledimensionfractals(D=f(r)),i.e.,thefractaldimensionDisthefunctionofcharacteristicscalerinsteadofaconstant.Byusingvariabledimensionfractals,severaldeformationandstressstatesofoffshorestructuresaredescribed.

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简介：Inhighlypopulatedurbancenters,traditionalseismicsurveysourcescannolongerbeproperlyappliedduetorestrictionsinmoderncivilianlifestyles.Theambientvibrationnoise,includingbothmicroseismsandmicrotremor,thougharegenerallyweakbutavailableanywhereandanytime,canbeanidealsupplementarysourceforconductingseismicsurveysforengineeringseismologyandearthquakeengineering.Thisisfundamentallysupportedbyadvanceddigitalsignalprocessingtechniquesforeffectivelyextractingtheusefulinformationoutfromthenoise.Thus,itcanbeessentiallyregardedasapassiveseismicmethod.Inthispaperwefirstmakeabriefsurveyoftheambientvibrationnoise,followedbyaquicksummaryofdigitalsignalprocessingforpassiveseismicsurveys.ThentheapplicationsofambientnoiseinengineeringseismologyandearthquakeengineeringforurbansettingsareillustratedwithexamplesfromBeijingmetropolitanarea.Forengineeringseismologytheexampleistheassessmentofsiteeffectinalargeareaviamicrotremorobservations.Forearthquakeengineeringtheexampleisforstructuralcharacterizationofatypicalreinforcedconcretehigh-risebuildingusingbackgroundvibrationnoise.Byshowingtheseexampleswearguethattheambientnoisecanbetreatedasanewsourcethatiseconomical,practical,andparticularlyvaluabletoengineeringseismologyandearthquakeengineeringprojectsforseismichazardmitigationinurbanareas.

简介：Electricalconductionbehaviorofpristineandiodinedopedpolyetherimides(PEI)hasbeeninvestigatedunderbothtransientandsteadystateconditionsintheoperatingtemperaturerange50-200℃atvariouselectricfieldsof12-60kV/cm.Thetransientcurrentsshowthehyperbolicdecaycharacter,andthedecayexponentp(ameasureofcurrentdecayrate)decreaseswithtemperature(7)anddopingconcentration.Theoriginoftransientcurrentshasbeenattributedtothedipolarnatureofcarbonyl((?)C=O)groupsandtheetherlinkagespresentinthemainchainofPEI.Thelowfieldsteadystateconductionisohmicinnature.Themagnitudesofionicjumpdistance(a)valuesdonotfavoranionictypeofconductionasapossibleconductionmechanisminpristineaswellasiodinedopedPEI.TheSchottkycoefficientsestimationsdonotshowthepossibilityofSchottkytypeorPoole-Frenkeltypeconductionmechanismsinthelowtemperatureregion(<120℃),however,inthehightemperatureregion(>120℃)thereisacertainpossibilityofPoole-Frenkeltypeconductionmechanisminbothpristineandiodinedopedsamples.Thedualslopeinthe1gIversus1/Tcurvesforiodinedopedsamplesindicatesthepresenceofmorethanonetypeoftrappinglevels.

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简介：Electricaldischargemachining(EDM)process,atpresentisstillanexperienceprocess,whereinselectedparametersareoftenfarfromtheoptimum,andatthesametimeselectingoptimizationparametersiscostlyandtimeconsuming.Inthispaper,artificialneuralnetwork(ANN)andgeneticalgorithm(GA)areusedtogethertoestablishtheparameteroptimizationmodel.AnANNmodelwhichadaptsLevenberg-Marquardtalgorithmhasbeensetuptorepresenttherelationshipbetweenmaterialremovalrate(MRR)andinputparameters,andGAisusedtooptimizeparameters,sothatoptimizationresultsareobtained.Themodelisshowntobeeffective,andMRRisimprovedusingoptimizedmachiningparameters.

简介：有在早年龄的时间的电的抵抗力的变化被用来调查水和进程和孔开发。基于水泥的材料水和的孔减小过程被一个建议方法开发。孔减小在设定的时期是快的。结果发现毛孔断绝比在类似于过滤方法的结果的高水位线比率在更低的水/水泥比率更快发生。