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简介：在2004年奥林匹克赛事中，中国的李婷，孙甜甜取得了中国网球第一个金牌一女子双打冠军。忘记不了当时李婷挥动着她的BABOLAT（百保力）网拍PureDriveZylon360°激动地拥抱着孙甜甜吵闹着，幸福地哭着的情景。

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简介：ＰｒａｃｔｉｃａｌＤｒｉｖｅａｎｄＰｒｏｔｅｃｔｉｏｎＣｉｒｃｕｉｔｓｆｏｒｔｈｅＩＧＢＴ①ＧＵＨｅｒｏｎｇ，ＺＨＡＮＧＣｈｕｎｊｉａｎｇ，ＬＩＵＹａｎｍｉｎ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂｓｔｒ...

简介：Shingledmagneticrecording(SMR)caneffectivelyincreasethecapacityofharddiskdrives(HDDs).HostawareSMR(HA-SMR)isexpectedtobemorepopularthanotherSMRmodelsbecauseofitsbackwardcompatibilityandnewSMR-specificAPIs.However,anHA-SMRdriveoftensuffersperformancedegradationunderwrite-intensiveworkloadsbecauseoffrequentnon-sequentialwritesbufferedinthediskcache.Thenon-sequentialwritesmainlycomefromupdatewrites,smallrandomwritesandout-of-orderwrites.Inthispaper,weproposeahybridstoragesystemcalledROCOwhichaimstouseasolidstatedrive(SSD)cachetoimprovetheperformanceofanHA-SMRdrive.ROCOreordersout-of-orderwritesbelongingtothesamezoneandusestheSSDcachetoabsorbupdatewritesandsmallrandomwrites.WealsodesignadatareplacementalgorithmcalledCREAfortheSSDcache.CREAfirstconductszone-orientedhot/colddataidentificationtoidentifycold-cachedzonesandhot-cachedzones,andthenevictsdatablocksbelongingtocolderzoneswithhigherprioritiesthatcanbesequentiallywrittenorwrittenthroughhost-sideread-modify-writeoperations.Itgivesthelowestprioritytodatablocksbelongingtothehottest-cachedzonethathavetobenon-sequentiallywritten.ExperimentalresultsshowthatROCOcaneffectivelyreducenon-sequentialwritestotheHA-SMRdriveandimprovetheperformanceoftheHA-SMRdrive.

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简介：1.REPermanentMaterialsChinesedemandforREpermanentmagnetsincreasesat20%peryear.TheoutputofsinteredNdFeBmagnetswillreach70,000tonsin2010,75%oftheworldtotal,withsalesvalueofRMB$26billion.2.RECatalystMaterials

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简介：Firms’transformationfrompassiveenvrionmentalmanagementtoactiveenvironmentalmanagementisthekeytosolvingenvironmentalproblems.Thispaperempiricallystudiestheimpactofenvironmentalmanagementincen-tivesonenvironmentalmanagementthroughmodelconstruction.BasedonthedataandrealityofChina,wecanbuildaconceptmodelofenvironmentalmanagementdrivingmechanism,andputforwardtheoreticalhypothesisthatcanbetested:takethe13environmentalmanagementbehaviors(EMBs)assubstituteofthecomprehensiveness,introducecountingvariables,anduseNBmodel,PossionModelandOrderedProbitmodeltheregressionanalysis.ThetheoryandmethodsbroughtforwardinthispaperwillprovidereferencesforfirmsinChinatofurtherimplementvoluntaryenvironmentalmanagement,andofferadvisesandcountermeasuresforleaderstoimplementenvironmentalmanage-menteffectively.

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简介：IntheMetalsIndustry,interruption-freeprocessestoproducehigh-qualityendproductsareaprerequisite.Themaindrivestogetherwiththemillstandsplayakeyroleinthesuccessofrollingmills.Thecrucialdemandsplacedonthedrivesystemare:high-dynamicperformanceofdriveanditscontrolsystem,abilitytohandletheprocessrelatedoverloads,smoothrunning,highavailability,highefficiency,easyserviceabilityandabilitytointegrateseamlesslywiththeautomationsystems.WithnumerousreferenceinstallationsandmanyyearsofexperienceSiemensVAIhasthewiderexpertiseandtheportfoliotoprovidetherightdriveforeveryapplication.Thispaperexaminesthelatestinnovation,SINAMICSdrivetechnology,forbothnewdriveapplicationsaswellasformodernizingtheexistingdrivesinrollingmillapplicationslikehotstripsmills,platemills,coldrollingmills,andlongrollingmills.

简介：Commercializedcapsule-typeendoscopesmovepassivelybyperistalticwaves(andgravity),whichmakesitdifficultfordoctorstodiagnosetheareasofinterestmorethoroughlyandactively.Toresolvethisproblemofpassivity,itisnecessarytofindaspeciallocomotionprinciple,whichfitsthegastrointestinal(GI)tract.Inthispaper,aleggedlocomotivemechanismwithshapememoryalloy(SMA)actuationbasedontheperistalticprincipleisproposed,andthenthestructureofthelocomotionmechanismisintroduced.Basedonthepreliminaryresults,thedesign,modeling,andfabricationofanSMAmicroactuationconceptforapplicationinanendoscopiccapsulearegiven,aswellastheSMAspringandleggedcomponentdesign,whichisthecoresectionofthesystemdesign.Weusedthepseudo-rigid-bodymodel(PRBM)toanalyzenonlinearandlargedeflectionsoftheSMAleggedcomponent.Thus,aprototypeendoscopewithanSMAspringandsixleggedcomponentswasdesignedandfabricated.Itis15mmindiameterand33mmintotallength,withahollowspacetohouseotherpartsneededforendoscopysuchasacamera,aradiofrequency(RF)module,andsensors.Duringtesting,thelocomotivemechanismwaseffectiveinaplastictubeenvironment.

简介：MrJenkinslivesinatown.Heworksina1.Therearealotofoldwonderfulthingsinit.Helikeshisworkandoftengoestohisofficeontime.

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