release it design and deploy productionready software pdf download
Tài liệu What it is and How to Prepare pdf
... be sure to: • Wash your hands often with soap and water. Use alcohol-based hand sanitizer when soap and water are not available. • Avoid touching your eyes, nose, and mouth. The flu often ... telephones and light switches with a disinfectant cleaner or a cleaner with bleach. You can also mix your own water and bleach solution. Mix ten parts water with one part bleach. • Limit your ... ăn cho thú nuôi trong nhà 1 Pandemic Flu: What it is and How to Prepare When many people get a disease at the same time, it is called a pandemic. Pandemic flu is caused when people...
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Design and Technology: Food Technology pdf
... knowledge, understanding and skills in a variety of contexts and in designing and making products. AO3 Analyse and evaluate products, including their design and production.Quality of Written Communication ... weaknesses which limit its suitability for the •target market Criterion 4Mark BandTesting and Evaluation9 –12 Detailed testing and evaluation as appropriate throughout the designing and •making ... little evidence of research and analysis of context • Design criteria is very general and is lacking in any detail•Limited understanding of the target market/user evident•16GCSE Design and...
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Software Design and Development (A guide) is help you how to managed IT Project. Especially for Design and Develop software project.
... Software Design & Development Software Design & Development Day 1 - Definitions and OverviewDay 2 - Software Design Software Development Day 2 - Software Design Reviewing the design ... testing Software Design Software Design Day 2 - Software Design AnalyzerequirementsCreate design Analyze and reviewCorrect and improveUtilize prototype to investigate and resolvekey ... Day 2 - Software Design Reviewing the design - finally Scrutinize the list of planned activities and test activities to ascertain whether any changes or additions are needed The design...
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EMBEDDED LINUX SYSTEM DESIGN AND DEVELOPMENT.pdf
... I2C subsystem, and USBgadgets. vi Embedded Linux System Design and Development Ⅲ Borland is a registered trademark of Borland Software Corporation in the United States and other countries. ... Sriram Neelakandanxx Embedded Linux System Design and DevelopmentLinux-based embedded system does not stop with the OS but has to doa lot with writing and building applications. And applications ... leaks and memory corruption in applica-tions and drivers.Ⅲ Learn methods to profile applications and the kernel.Ⅲ Understand uCLinux architecture and its programming model.Ⅲ Understand the...
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Tài liệu Mastering Photoshop CS3 for Print Design and Production P1 pdf
... logo, and the Sybex logo are trademarks or registered trademarks of John Wiley & Sons, Inc. and/ or its affiliates, in the United States and other countries, and may not be used without written ... years, and has created lay-outs and designs for many successful software training books, videos, and magazines.Ted is the author of InDesign CS2 at Your Fingertips, The InDesign Effects Book, and ... CreativeSuite 2 Integration: Print Project Workflow, Getting Started with Quark Interactive Designer, and Bridge and Version Cue CS3 Essential Training—all available at Lynda.com. And he teaches a digital...
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Tài liệu Design and Implementation Guidelines for Web Clients- P1 pdf
... overcome the complexity that exists in large applications. The following is a brief summary of the benefits of design patterns and reusable components: ● Design patterns – Design patterns provide ... methodologies for solving general problems and the ability to use the collective knowledge and experience of the IT community to improve the quality of your own applications. You can use ... well-documented and wellunderstood design patterns. The purpose of design patterns is to: ● Document simple mechanisms that work ● Provide a common vocabulary and taxonomy for developers and architects...
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Tài liệu Design and Implementation Guidelines for Web Clients- P2 pdf
... world-ready Web applications and also simplifies maintenance and extensibility after the application has been deployed. Chapter 7: Globalization and Localization 135 Additional Information For ... to fit on the screen, and regenerating images for specific cultures. To simplify localization efforts and minimize costs, deal with globalization and localization issues during the design ... Design and Implementation Guidelines for Web Clients With such a rich selection of synchronization mechanisms available to you, you must plan your thread synchronization design carefully and...
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Tài liệu Clutches and brakes design and selection P4 pdf
... Inc.4LinearlyActingExternalandInternalDrumBrakesLinearlyactingdrumbrakesarethosefittedwithshoeswhich,whenacti-vated,approachthedrumbymovingparalleltoaradiusthroughthecen-teroftheshoe.TypicallinearlyactingdrumbrakesareillustratedinFigures1–3.Analysisoflinearlyactingbrakesincludesthoseinwhichthecentrallypivotedshoesareattachedtopivotedlevers,asinFigure1.Includingbrakesofthisdesignwithinthecategoryoflinearlyactingbrakesisjustifiediftheyaredesignedsothattheappliedforcesontheshoesandliningsactalongtheradiioftheshaftsthattheygripwhenthebrakesareapplied.Brakesofthistypemayacteitheruponbrakedrumsordirectlyuponrotatingshaftsandaresuitableforuseinheavy-dutyapplications,suchasfoundinminingandconstructionequipmentandinmaterials-handlingmachinery.Internallinearlyactingdrumbrakes,suchasusedontrucksinEurope,maybedesignedasinFigure2.Eitherpneumaticorhydrauliccylindersorcams ... signreversalfoundintheexpression(RcosuÀr)whenequation(1-5a)isappliedtoaninternalshoe.ThesignreversalsimplychangesthedirectionofrotationimpliedbyapositivevalueofMf,aswasdiscussedinanearliersection.Thenearlyhorizontalportionfrom0jtoabout30jimpliesthatforexternalshoeswhichsubtendananglelessthan30j,anychangesinthelengthoftheshoethatdonotincreasethesubtendedanglebeyond30jwillhaveanegligibleeffectontheR/rratio.Thiscorrelateswiththeshort-shoesegmentsusedinthebrakesshowninFigure3.Moreover,thevalueofMfcausedbyadeviationfromtheR/rratiothatyieldsazerovalueofMfwillbesmalliff0remainssmall.Inparticular,iftheRvaluethatyieldsMf=0isreplacedbyR+yRinequation(1-5a),themomentduetofrictionwillincreasetoonlyApmaxrwyR2ðf0þsinf0ÞwhichissmallenoughtobeeasilyresistedbytheshouldersshownontheshoesinFigure3.ActivationforceFsandtangentialforceFtonasymmetricallyplacedpivotaregivenbytherelationsFs¼2pmaxrwZf0=20cos2udu¼12pmaxrwðf0þsinf0Þð1-8Þ and Ft¼2ApmaxrwZf0=20cos2udu¼AFsð1-9ÞFIGURE5VariationofR/rwithanglef0.Linearly Acting External and Internal Drum Brakes 73Copyright © 2004 Marcel Dekker, Inc.Substitution for Mp and Mffrom equations (2-7) and (2-11) into equation(2-12) ... Acting External and Internal Drum Brakes 79Copyright © 2004 Marcel Dekker, Inc.Let the shoe be restrained at A to prevent it from rotating with the drum,with the restraint moving with the shoe....
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Tài liệu Clutches and brakes design and selection P7 pdf
... Inc.SimplatrolDanaproducesasmall-capacity(under8oz-in.)unitde-signedtohaveanadjustabletorquerangeandtousetheconstructionsim-ilaritiesbetweeneddy-currentandhysteresisbrakes/clutches.InittheIMandOMarereplacedbyapermanent-magnetdiskandeitheraneddy-currentorhysteresisdisk.Torquecapacitymaybeadjustedbymeansofthefluxgateplacedbetweenthem,asshowninthebrakeversioninFigure18.Manualrotationofthefluxgaterelativetothemagneticdiskdeterminesthestrengthofthemagneticfieldthatactsoneitherthehysteresisoreddy-currentdiskattachedtothefront,unthreaded,shaftontheassemblyshown.Thereardisk,themagneticplate,andthefluxgaterotatetogetherinthecaseofaclutch,orremainstationaryinthecaseofabrake.Clutchandbrakeunitsdifferonlyinthattherearshaftofthebrakeisthreaded,asshowninthefigure.Thetorqueversusspeedcurvesforaneddy-currentbrakeinFigure16mayalsobeusedtodeducethecharacteristicsofaneddy-currentclutch;namely,thataneddy-currentclutchcanprovideacontrolledsoftstartbe-tweenadriverandadrivenunitbycontrollingtheexcitationcurrentasafunctionofthespeeddifference.Likewise,aneddy-currentclutchmayalsobeconsideredwhenadrivenmachinemayexperiencespeedchangesofseveralhundredrpmthatshouldnotimposealargetorquechangeondrivingma-chine.Sincethetorqueavailabletoaccelerateadrivenmachinebackuptospeedwillbesmall,aneddy-currentclutchwillbesuitableonlyifprolongedFIGURE16Combinedtorquerotationalspeedcurveandtorqueexcitationcurvesfor ... Inc.OMandtheIM.ThebrakeconfigurationdiffersfromtheclutchonlyinthattheIMisrigidlyattachedtothebrakeframe.AnelectromagneticcoiloutsidetheOMandconcentricwithitisusedtoactivatethebrakeorclutch.WhenthecoilinenergizedbypassingcurrentthroughitamagneticfieldisestablishedwhichcausestheparticlestobridgethegapbetweentheIMandtheOMandformlinksbetweenthetwo,asrepresentedinFigure6(b).Theselinksarealongthemagneticlinesofforce,whicharemadenearlyperpendiculartotheOMbytheconfigurationoftheOMandthecoilhousing,asshowninFigures 6and7 .BoththeshearandtensilestressesintheselinksresistrelativemotionbetweentheIMandtheOMandsotransmittorqueforthebrake/clutch.TheseshearandtensilestressesdevelopedaredependentonthecoilcurrentFIGURE4Hysteresisbrakewitha8-lb-ftcapacity.(CourtesyofMagneticPowerSystems, ... and j Á D ¼ UD ¼ qoE and H ¼BAoð1-2Þwhere U denotes the charge density (coulombs/meter3) and constants qo and Aodenote the electric and magnetic permeabilities of free space, respectively....
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Tài liệu Clutches and brakes design and selection P10 pdf
... Inc.maximuminFigure16,setg=13.52j,asreadusingtheMathcadTracefeature.Evaluationofequation(1-13)forn=0.2,g=180,U=0.3,a=14j,andh=20foru=13.52jandforu=20jgivesadetentforceof4.544lb,whichiswithintheacceptablerange.Substitutionofg=180andq=1/32in.intoa=gq=180/32=5.625in.enablesdeterminationofrfromr=Ua=0.(5.625)=1.688in.Withlengthlgivenbyl=r/n=1.688/0.2=8.44in. ,it followsthattheclearancegivenbylÀr=8.440À1.688=6.752in.exceedsthatspecified.Thisclearancerequirementmaybesatisfiedbyincreasingthemagni-tudeofnandreducingthemagnitudeofg.Thus,ifn=0.28andg=150,thedetentforcebecomes4.702lb,aisreducedto4.688in.,andrbecomes1.406in.Thesevaluesgivel=5.021in.,sotheclearanceis5.021À1.406=3.615in.,whichiswithinthedesiredrange.VI.EXAMPLE3:CONEDRIVESelectaconedriveforacombinationgolfcardandaproposedcongestedareacommutercartforuseincommunitiesthatacceptthem.Analysisoftorquetransmissiononthebasisofthedynamiccoefficientsoffrictionforacceptableliningsindicatesthata2.00-in.overlapwouldbesufficient.Forcomparison,consideronedesignwiththedriverconehavinganapexhalf-angleof40janddrivenconeshavingapexhalf-anglesof50jandaseconddesigninwhichboththedriveranddrivenconeshaveapexhalf-anglesof45j.Inbothcasesinitiallyselectaconegeneratorlengthof6.00in.toallowtheoverlaptobegreaterthan2.00in.intheeventthattheprototypeshouldrequiremodification.Beginwiththe40j,50jcombinationandturntoFigure11toselectthedimensionsoftheconesbyenteringthecurveatz=6andreadinguptothe40jline.Theprincipalradiusofcurvatureatthatpointis5.0346.Sincezismeasuredininches,theprincipalradiusofcurvatureis5.0346in.ReadingtotheleftatthisvalueofUyieldsthatatz=4.25in.,theprincipalradiusofcurvatureofthe50jhalf-angleconeis5.0650in.Aplotofthex-dimensionforeachcone,showninFigure17(a),confirmsthatthetwoconesshouldrollwithout ... between the driver and driven cones coincidewith the z-axis so that u = f in (3-4), (3-6), and (3-7). Since the driver conemust roll freely within a driven cones, it is essential that its radius of ... Inc.setofunitstobeusedforeachratio,andtheresultingratiosareindependentoftheunitsused.Relativelybroadcurvesareshowninthefollowingcomputer-generatedgraphsforeasyreadingtoshowcharacteristicbehaviorandtoprovidecontrastagainstthegridlines.Associatedroutines,suchasMathcadTrace,appeartoreadthemfromtheoriginatingdata,therebyeliminatingtheread-ingerrorsassociatedwithtracewidths.I.BELTDRIVESEquipmentusingnonmetallicbeltdrivesmayincludetheclutchcapabilitybymountingthemotor(becauseitisusuallysmallerthanthedrivenmachine)eitheruponahingedbaseoruponaslidingbasefittedwithaleveroralinkagethatpermitsthemotortobemovedtoandfromthedrivenmachineinordertoapplyandrelievethebelttensionandtherebygiveclutching(applyingbelttension)anddeclutching(relievingbelttension)capability.Thesedesignseliminatetheneedforamechanicalclutch.Theirsim-plicityisachieved,however,attheriskofintroducingthepossibilitythatfrictionalheatingofthebeltduringidling,whenthebelt(orbelts)mayrestonthemotor’srotatingsheave(pulley).Thatmaygenerateenoughheattocausebeltingmaterialstoslowlyshrink.Thisreductioninthecenterdistancebetweenthedrivinganddrivenpulleys,orsheaves,maybegreatenoughtocauseanunintendedre-engagementofthemotorandthedrivenmachine .It mayalsoinhibittheirdisengagement.Consequently,somebeltmanufacturersproducebeltsthatresistshrinkageduetoheatingforuseintheseclutchinganddeclutchingapplications.Torquecapabilityforthesedrivesisaseparatecalculationtobeperformedaccordingtotheproceduresgivenbythebeltmanufacturers.Therefore,itwillnotbeconsideredinthefollowingdiscussion.A.HingedBaseAtfirstglanceitmayappearthatmovingamotorbymountingiteitheronahingedbaseoronaslidingbaseissosimplethatnoanalysisisnecessary.Ananalysis,however,doesbringforthseveralconsiderationsthatmaybemissedinselectingthedimensionsofthebaseplate,inlocatingthepositionofthebaseplatehinge,orindesigningthelinkagefortheslidingbaseplate.Twosimilar,butdistinct,mountingdesignsforhingedbaseswillbeconsidered.Intheseconfigurationsitistheweightofthemotoralonethatprovidesthebelttension.ThetensionvectorshowninFigure1(a )and( b)acting...
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Tài liệu Clutches and brakes design and selection P13 pdf
... Inc.TypicalmodesofbackplatevibrationinthefirstmodeareshowninFigure7anditsnodallines,indicatedbydashedcurvesinFigure7,areshownaloneinFigure8.Figures 9and1 0showabackplatebeforeandafteraraisedportion(Figure11)wasaddedtoreducethefrequencyofthenoisegenerated.III.FINITEELEMENTANALYSISMurakami,Tsudada,andKitamura[13]reportedonafiniteelementanalysisofautomotivediskbrakestocomparethecalculatedresonancefrequencieswithpreviousmeasurementsofbrakesquealonachassisdynamometerandtoassociatethemwithcalculateddeformationofthebrakecomponents.Secondarylow-frequencysquealfrom2to3kHzandprimaryhigh-frequencysquealfromabout5.5to10.5kHz,asshowninthehistograminFigure12,correlatedwellwiththeclusteringoffrequenciesfoundforthebrakedisk,cylinder,pad,andtorquemember,showninFigure13.Calculateddiskandcaliperfrequencymodeswhereverifiedbyholographicinterferometryandbyaccelerometermeasurementsinthecaseofthecaliper,orcylinder.Althoughtheclusteroffrequenciescorrelatedwiththeprimaryandsecondarysquealregions,severalcomponentresonantfrequenciesbetween3 and5 .5kHzdidnotresultinbrakesquealinthisfrequencyrange.Thisimpliedthatthedrivingforce,thestick-slipphenomenon,didnotexcitethesefrequenciesandthattheywerenotexcitedbystructuralcoupling.Linearized,seven-degree-of-freedomanalysisofthesystemusingthelumped-parametermodel,asshowninFigure14,gavesolutionsoftheformu¼AeatsinðNtþfÞð3-1Þforeachofthesevenvariablesinwhichexponenta,whichdeterminedtheregionsofinstabilityintheJarvisandMillsanalysis,wastermedthesquealindex.Thisanalysisindicatedthatthesquealindexwasrelatedtothenegativegradientofthefrictioncoefficient,asillustratedinFigure15,whichalsoshowstestresultsfortwotestbrakeliningpads.TheseresultsalsocorrelatewithSpurr’sfindingthatthesquealprobabilityincreasedasthefrictionco-efficientincreased.Thelowsquealindexbetween3. 0and5 .5kHzanditsslopealsocorrelatewiththehistogramshowninFigure12,whichimpliesthatnegativeslopeofthefrictioncoefficientversusvelocitycurveisoneofseveralsignificantparametersinthegenerationofbrakesqueal.Analysisoftheinfluenceofthetorquemember,showninFigure16,indicatedthatitsinfluencewasalsominimuminthevicinityof3kHz,asshowninFigure17,whichalsoaccountsforthelowsquealamplitudebetween3. 0and 5.5. ... Inc.ingsurfacessufficientlyforthecomponentstonearlyreassumetheiroriginalconfigurationandtheprocesstorepeat.Intheyearsthatfollowed,manyinvestigationswereconductedtobetterunderstandtheroleofthefactorsthataffectedbrakeandclutchvibration.Onlyafewofthemanycontributorstotheliteratureofbrakevibrationwillbediscussedexplicitlyinthissection.Thispartiallistingissufficient,however,toportraythegeneraltrendsintheyearsafter1935.AnexperimentalinvestigationbyHollmann[2],reportedin1954,indicatedthatthetendencyforfrictionalvibrationincreasedwiththecontactpressureandthatitalsoincreasedwiththetemperatureofthefrictionma-terialsupto100jCbutthendecreasedrapidlyasthetemperatureroseabove100jC.Afterstudiesofbrakesquealonrailwayvehicles,Broadbent[3]alsoconcludedthatbrakevibrationwasdependentonthemechanicallinkageusedandwasassociatedwithafrictioncoefficientthatdecreasedwithincreasingvelocitybetweenshoeandbrake.Healsoobservedthatnochatterwasfoundwhenwoodenbrakeswhosefrictioncoefficientincreasedwithincreasedslipspeedwereused.SimilarresultswerefoundbySinclair[4],whoalsoreportedthatthefrequencyofoscillationwasstronglydependentontheequivalentmassandspringconstantofthemechanicalsystemthatheldthebrakelininginplaceinthesliderblockconfigurationusedinthelaboratorymodel.Spurr[5]rejectedthenotionthatitwasnecessaryforthefrictioncoefficienttodecreasewithincreasingslipspeedinordertohavefrictionalvibration.Hisexperimentswithrailwayblockbrakesonarailwaywheelin-dicatedthatvibrationwasindependentofthechangeinthefrictioncoefficientwithslipspeedbutthatitwasmorelikelyifthefrictioncoefficientwaslarge.Thestick-sliptheoryoffrictionappearedtoholdasthedrivingmeans,however,andSpurralsoobservedthatthefrequencyofoscillationdependedontheassociatedmechanicalsystemusedtoforcethebrakeblockagainstthewheel.InthediscussionofSpurr’spaper,F.R.MurrayintroducedwhathasbeencalledthespragtheoryinBritishliterature,involvingasprag(acan-tileveredbeampressedagainstamovingsurface),asshowninFigure1.Asomewhat ... Inc.TypicalmodesofbackplatevibrationinthefirstmodeareshowninFigure7anditsnodallines,indicatedbydashedcurvesinFigure7,areshownaloneinFigure8.Figures 9and1 0showabackplatebeforeandafteraraisedportion(Figure11)wasaddedtoreducethefrequencyofthenoisegenerated.III.FINITEELEMENTANALYSISMurakami,Tsudada,andKitamura[13]reportedonafiniteelementanalysisofautomotivediskbrakestocomparethecalculatedresonancefrequencieswithpreviousmeasurementsofbrakesquealonachassisdynamometerandtoassociatethemwithcalculateddeformationofthebrakecomponents.Secondarylow-frequencysquealfrom2to3kHzandprimaryhigh-frequencysquealfromabout5.5to10.5kHz,asshowninthehistograminFigure12,correlatedwellwiththeclusteringoffrequenciesfoundforthebrakedisk,cylinder,pad,andtorquemember,showninFigure13.Calculateddiskandcaliperfrequencymodeswhereverifiedbyholographicinterferometryandbyaccelerometermeasurementsinthecaseofthecaliper,orcylinder.Althoughtheclusteroffrequenciescorrelatedwiththeprimaryandsecondarysquealregions,severalcomponentresonantfrequenciesbetween3 and5 .5kHzdidnotresultinbrakesquealinthisfrequencyrange.Thisimpliedthatthedrivingforce,thestick-slipphenomenon,didnotexcitethesefrequenciesandthattheywerenotexcitedbystructuralcoupling.Linearized,seven-degree-of-freedomanalysisofthesystemusingthelumped-parametermodel,asshowninFigure14,gavesolutionsoftheformu¼AeatsinðNtþfÞð3-1Þforeachofthesevenvariablesinwhichexponenta,whichdeterminedtheregionsofinstabilityintheJarvisandMillsanalysis,wastermedthesquealindex.Thisanalysisindicatedthatthesquealindexwasrelatedtothenegativegradientofthefrictioncoefficient,asillustratedinFigure15,whichalsoshowstestresultsfortwotestbrakeliningpads.TheseresultsalsocorrelatewithSpurr’sfindingthatthesquealprobabilityincreasedasthefrictionco-efficientincreased.Thelowsquealindexbetween3. 0and5 .5kHzanditsslopealsocorrelatewiththehistogramshowninFigure12,whichimpliesthatnegativeslopeofthefrictioncoefficientversusvelocitycurveisoneofseveralsignificantparametersinthegenerationofbrakesqueal.Analysisoftheinfluenceofthetorquemember,showninFigure16,indicatedthatitsinfluencewasalsominimuminthevicinityof3kHz,asshowninFigure17,whichalsoaccountsforthelowsquealamplitudebetween3. 0and 5.5....
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Tài liệu Design and access statements - How to write, read and use them pdf
... colour and texture.• Access – the accessibility to and within the site for vehicles, cycles and pedestrians in terms of the positioning and treatment of access and circulation routes and how ... respect, territorial responsibility and community• Physical protection places that include necessary, well-designed security features• Activity activity appropriate to location, with reduced ... WhitstableNew flats and shops work with existing buildings and uses in the area, making it a vibrant and attractive place to use. © Mark Ellis and Ashley Binghan ICD Ltd Design 23 .Design...
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