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computer operating system built on top of open source linux kernel

focal press working with jqtouch to build websites on top of jquery

focal press working with jqtouch to build websites on top of jquery

Tin học

... iPhone AppThe web browser built into the iPhone is one of the most advanced browsers on the market. Features such as CSS transi-tions and animation were part of the iPhone Mobile Safari web browser ... although jQTouch is built using HTML5 standards on top of the jQuery framework, it has not been optimized to run on all devices. For instance, response time on Windows Phone 7 has not been ... 3.16.Location Aware SolutionsThe final plug-in leverages the geolocation features built into the phone to present the longitude and latitude of your current position.This one will take a little...
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THE RISE OF OPEN SOURCE LICENSING ppt

THE RISE OF OPEN SOURCE LICENSING ppt

Cao đẳng - Đại học

... safely deploy Linux in a mission critical environment.”(otn.oracle.com/tech /linux) HP: “HP is hosting a number of open source software projects thatrun on various HP systems.” (opensource.hp.com)Apple: ... difficult to estimate the size of open source software in-dustry”. Pure open source companies are tiny and many of them are pri-vately held. However, the popularity of open source is significant andpractically ... for both systems and applications FROM PROPRIETARY TO OPEN ã 18 Operating system: BSD*, Linux* , Solaris,WindowsServer software:Apache*, Microsoft IIS,SunONE, Zope*Database: MicrosoftSQL,...
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the mit press perspectives on free and open source software jun 2005

the mit press perspectives on free and open source software jun 2005

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... general.In this chapter, we report on the results of a continuing study of theeffort and motivations of individuals to contributing to the creation of Free /Open Source software. We used a Web-based ... engineer-ing, of organizations and organizing, of the software industry, and of software as a component of contemporary society.JF, BF, SAH, and KRL phenomenon. Starting with the collapse of the Berlin ... Software Development 794 Standing in Front of the Open Source Steamroller 81Robert L. Glass5 Has Open Source Software a Future? 93Brian Fitzgerald6 Open Source Software Development: Future or Fad?...
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The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

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... context switching and scheduling.One of the goals of Mach is to provide an extensible kernel basis upon which operating system environments suchas UNIX can be built. Emulation of UNIX-like system ... exception of the hardware validation, all of these steps are implemented in a machine-independentfashion. 178.2. Copy -On- Reference Task MigrationOne of the thorniest problems of task migration ... experimental addition. A production version of Mach is in use on over 200 workstations and large timesharing systems within the CMU Department of Computer Science. It is alsobeing used on dozens of machines...
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Reliability analysis of power system based on generalized stochastic petri nets

Reliability analysis of power system based on generalized stochastic petri nets

Tài liệu khác

... evaluationand description of distributed systems characterized by sequen-tiality, concurrency, synchronization, among others. Specifi-cally, the GSPN [8] is one of the several extension of standardPNs ... transitions were supposedto have constant probability of firing. However, there is astrong correlation between the operating conditions of powersystems and the probability of harmful events. To consider ... producedifferent consequences depending on the power system state.In conclusion, the reliability of protection schemes, understoodas the union of dependability and security, and its dependency on the system...
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Reliability analysis of a power system based on the multi state system theory

Reliability analysis of a power system based on the multi state system theory

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... function of subsystem ; is the number of components in subsystem i; iniM is the number of possible states of subsystem i. is the performance of subsystem i; is the corresponding ... function of the system; is the number of subsystems in the system; NsysM is the number of possible states of the system; sG is the performance of the system; sq is the corresponding ... multi-state system theory. II. PROBLEM FORMATION The power system is composed of eight identical batteries. A branch consists of two batteries connected in series, and the system consists of...
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Tài liệu Báo cáo

Tài liệu Báo cáo " Survey of WO3 thin film structure built on ito/glass substrates by the Raman and xrd spectroscopies" doc

Báo cáo khoa học

... 267.66 cm-1 of the deformation mode and 802.5 cm-1 of covalent bonds W – O, there is only one clear modification, comparing to Raman spectra of film on thinner ITO layers. The only difference ... crystalline phase of WO3. The Raman peak at 256.6 cm-1 indicates the deformation vibration of O – W – O bond and 600 – 900 cm-1 region relates to stretching vibrations of W – O bonds [24]. The ... Gaussian function. This information gives us exact evaluation of the existence of different phases in our films. 3. Results and discussion 3.1. The effect of the thickness of ITO layer on XRD spectrum...
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Aging of the Respiratory System: Impact on Pulmonary Function Tests and Adaptation to Exertion pdf

Aging of the Respiratory System: Impact on Pulmonary Function Tests and Adaptation to Exertion pdf

Sức khỏe người cao tuổi

... collapse.Pulmonary function testsSpecifics of pulmonary function testing in an olderpopulationThe application of conventional quality controlstandards to objective assessment of pulmonaryfunction ... index de-scribes the relationship between force of contraction(Pdi/Pdimax) and duration of contraction (ratio of inspiratory time to total respiratory cycle duration[TI/TTOT]) and is related ... Quality control of spirometry in the elderly. The S.A.R.A. study.SAlute Respiration nell’Anziano = Respiratoryaging of the respiratory system 481 Aging of the Respiratory System: Impact on PulmonaryFunction...
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Báo cáo khoa học: Crystal structures of open and closed forms of D-serine deaminase from Salmonella typhimurium – implications on substrate specificity and catalysis pptx

Báo cáo khoa học: Crystal structures of open and closed forms of D-serine deaminase from Salmonella typhimurium – implications on substrate specificity and catalysis pptx

Báo cáo khoa học

... conformational states. Open conformation of WtDSD is shown indark grey while the closed conformation of SeMetDSD is shown in light grey. The smalldomains are related by a residual rotation of 15°. ... for the cofactor under crystallization conditions. Interestingly,unexpected conformational differences were observed between the two struc-tures. The WtDSD was in an open conformation while ... reac-tions catalysed include the transfer of amino group,decarboxylation, inter-conversion of l- and d-aminoacids and removal or replacement of chemical groupsat a, b or c positions [1]. Functionally,...
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A quarterly bulletin of the IEEE computer society technical committee on Database engineering (VOL. 8) ppt

A quarterly bulletin of the IEEE computer society technical committee on Database engineering (VOL. 8) ppt

Cơ sở dữ liệu

... Figure5:AcquiringtheVirtualRelationsPKCONTandHEMICwindowforquestionsandanswers.WhentheDBEusesthemousetoselectone of theitemsfromthethreemenus,aset of questionsappearsinthequestion-answeringareaatthebottom of thedisplay,towhichhecanthenrespond.One of thegeneralprinciples of acquisitionisevidentfromthisdisplay,namely,thattheacquisitioniscenteredupontherelationsandfieldsinthedatabase,becausethisistheinformationmostfamiliartotheDBE.Theanswerstoeachquestioncanaffectthelexicon,theconceptualschema,andthedatabaseschema.TheDBEneednotbeaware of exactlywhyTEAMposesthequestionsitdoes—allhehastodoisanswerthemcorrectly.Eventheentriesdisplayedinthewordmenuowetheirpresencetoquestionsaboutthedatabase.TheDBEvolunteersentriestothismenuonlyinthecase of verbacquisition,tosupplyanadjectivecorrespondingtosomenounalreadyinTEAM’slexicon,ortoenterasynonymforsomelexicon-residentword.TheDBEisassumednottohaveanyknowledge of formallinguisticsor of natural-languageprocessingmethods.Heisassumed,however,toknowsomegeneralfactsaboutEnglish—forexample,whatpropernouns,verbs,plurals,andtenseare,butnothingmoredetailedthanthat.Ifmoresophisticatedlinguisticinformationisrequired,asinthecase of verbacquisition,TEAMproceedsbyaskingquestionsaboutsamplesentences,allowingtheDBEtorely on hisintuitionasanativespeaker,andextractingtheinformationitneedsfromhisresponses.Virtualrelationsarespecifiediconically.Theleftside of Figure5showstheacquisition of avirtualrelationthatidentifiesthecontinent(PKCONT-CONTINENT,derivedfromWORLDC-CONTINENT) of apeak(PKCONT-NAME,fromPEAK-NAME)byperformingadatabasejoin on thePEAK-COUNTRYandWORLDC-CONTINENTfields.Similarly,therightside of Figure5showstheacquisition of thevirtualrelationthatencodesthehemisphere(HEMIC-HEMI) of acountry(HEMIC.NAME)byjoining on theWORLDC-CONTINENTandCONT-NAMEfields.Ifhewishes,theDBEcanchangepreviousanswers.Incrementalupdatesarepossiblebecausemost of themethodsforupdatingthevariousTEAMstructures(lexicon,schemata)weredevisedtoundotheeffects of previousanswersbeforetheeffects of newanswerscouldbeasserted.HelpinformationisalwaysavailabletoassisttheDBEwhenheisunsurehowtoansweraquestion.Selectingthequestiontextwiththemouseproducesamoreelaboratedescription of theinformationTEAMistryingtoelicit,usuallyaccompaniedbypertinentexamples.Finally,theacquisitioncomponentkeepstrack of whatinformationremainstobesuppliedbeforeTEAMhastheminimumitneedstohandlequeries.TheDBEdoesnothavetodeterminehimselfhowmuchinformationissufficient;allhehastodoistoperceivethatnoacquisitionwindowindicatesremainingunansweredquestions. Of course,theDBEcanalwaysprovideinformationbeyondtheminimum—forexample,bysupplyingadditionalverbs,derivedadjectives,orsynonyms.—20— ... schema;7,hence,thechoice of logicalformindirectlyaffectsthedesign of thosecomponents of the system anddetermines,inpart,theinformationtheDBEmustsupply.ThelogicalformemployedbyTEAMisfirst-orderlogicextendedbycertainintensionalandhigher-orderoperatorsandaugmentedwithspecialquantifiersfordefinitedeterminersandinterrogativedeterminers.Muchresearchhasbeendonetodeviseappropriatelogicalformsformanykinds of sentencesMoor8l],butthatinvestigationliesbeyondthescope of thisarticle.2.3WhatInformationIsAcquired2.3.1TheLexiconThelexiconisarepository of theinformationabouteachwordthatisnecessaryformorphological,syntactic,andsemanticanalysis.Therearetwoclasses of lexicalitems:closedand open. Closedclasses(e.g.,pronouns,conjunctions,anddeterminers)containonlyafinite,usuallysmallnumber of lexicalitems.Typically,thesewordshavecomplexandspecializedgrammaticalfunctions,alongwithatleastsome]fixedmeaningsthatareindependent of thedomain.Theyarelikelytooccurwithhighfrequencyinqueriestoalmostanydatabase. Open classes(e.g.,nouns,verbs,adjectives)aremuchlargerandthemeanings of theirmemberstendtovary,depending on theparticulardatabaseanddomain.Therefore,mostclosed-classwordsare built intotheinitialTEAMlexicon,while open- classwordsareacquiredforeachdomainseparately.However,thereareanumber of open- classwords,suchasthosecorrespondingtoconceptsintheinitialconceptualschema(seeSection2.3.2)andwordsforcommonunits of measure(e.g.,“meter”,“pound”),thataresobroadlyapplicabletosomanydatabasedomainsthattheyareincludedintheinitiallexiconaswell.Lexicalentriesincludethoseforthenames of filesubjects(i.e.,theentitiesaboutwhichsomerelationcontainsinformation—e.g.,peaksforPEAK,andcountriesforWORLDCinthesampledatabaseillustratedinFigure1.3),fieldnames,andfieldvalues.Inaddition,theDBEcansupplyadjectivesandverbs,aswellassynonymsforwordsalreadyacquired(seeSection2.4).Associatedwitheverylexicalentryissyntacticandsemanticinformationforeach of itssenses.Syntacticinformationconsists of itsprimarycategory(e.g.,noun,verb,oradjective),subcategory(e.g.,count,unit,ormassfornouns;objecttypesforverbs),andmorphology.Semanticinformationdepends on thesyntacticcategory.Theentryforeachnounincludesthesort(s)orindividual(s)intheconceptualschema(Section2.3.2)towhichthatnouncanrefer.Entriesforadjectivesandverbsincludetheconceptualpredicatetowhichtheyrefer,plusinformationabouthowthevarioussyntacticconstituents of asentencemapontoarguments of thepredicate.Scalaradjectives(e.g.,“high”)alsoincludeanindication of direction on thescale(plusorminus).2.3.2ConceptualSchemaTheconceptualschemacontainsinformationabouttheobjects,properties,andrelationsinthedomain of thedatabase.Itincludessets of individuals,predicates,constraints on thearguments of predicates,andtheinformationneededforcertainpragmaticprocessing.Theinformationalcontentissimilartothatcommonlyencodedinsemanticnetworks,buttheapparatususedismoreeclectic.Theconceptualschemaconsists of asorthierarchyanddescriptions of variousproperties of nonsortpredicates.Thesorthierarchyrelatescertainmonadicjpredicatesthatplayaprimaryroleincategorizingindividuals.Thesearecalledsortpredicates(representedhereinitalicsasinPERSON).TEAMwasdesignedwithaconsiderableamount of thisconceptualinformation built in.Figure3illustrates7Asnotedpreviously,thespecificformdependsalso on generalsyntactic,semantic,andpragmaticrulesforEnglishthatareencodedinthevariouscomponents of DIALOGIC.—16— ... continent of thecountry.Likewise,thehemisphereinwhichacountryislocatedcanbedeterminedfromthecontinent on whichthecountryislocatedandthehemisphere of thatcontinent.TEAMallowstheDBEtospecifyvirtualrelationsthatconveysuchadditionalinformation.2TheTEAM System ArchitectureThedesign of TEAMreflectsseveralconstraintsimposedbythedemandfortransportability;ourdiscussionwillemphasizethoseaspects of thedesign.Theneedtodecoupletherepresentation of whatausermeansbyaqueryfromtheprocedureforobtainingthatinformationfromthedatabaseobviouslyaffectedthechoice of system components.Inaddition,theneedtoseparatethedomain-dependentknowledgetobeacquiredforeachnewdatabasefromthedomain-independentparts of the system influencedthedesign of theparticulardatastructures(or“knowledgesources”)selectedforencodingtheinformationusedbythesecomponents.Figure2illustratesthemajorprocesses of TEAM,thevarioussources of knowledgetheyuse,andtheflow...
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A quarterly bulletin of the IEEE computer society technical committee on Database engineering (VOL. 9) pptx

A quarterly bulletin of the IEEE computer society technical committee on Database engineering (VOL. 9) pptx

Cơ sở dữ liệu

... usedtodeflectthereadingbeamveryfast.Asaresult,itismuchfastertoretrieveinformationfromtracksthatarelocatednearthecurrentlocation of thereadinghead.Wecallthisaspanaccesscapability.Thespanaccesscapability of opticaldiskshasimplicationsforschedulingalgorithmsanddatastructuresthatareappropriateforopticaldisks,aswellassignificantimpact on retrievalperformanceChristodoulakis87a].InChristodoulakis87]wealsoderiveexactanalyticcostestimatesaswellasapproximationsthatarecheapertoevaluate,fortheretrieval of recordsandlongerobjectssuchastext,images,voice,anddocuments(possiblycrossingblockboundaries)fromCAVopticaldisks.Theseestimatesmaybeusedbyqueryoptimizers of traditionalormultimediadatabases.RetrievalPerformance of CLVOpticalDisksConstantLinearVelocity(CLV)opticaldiskshavedifferentcharacteristicsthantheCAVopticaldisks.CLVopticaldisksvarytherotationalspeedsothattheunitlength of thetrackwhichisreadpassesunderthereadingmechanisminconstanttime,whichisindependent of thelocation of thetrack.Thishasimplications on therotationaldelaycostwhich,inCLVdisks,depends on thetracklocation.Thisalsoimpliesthat,inCLVdisks,thenumber of sectorspertrackvaries(outsidetrackshavemoresectors).Thelatter(variablecapacity of atrack)hasmanyfundamentalimplications on selection of datastructuresthataredesirableforCLVopticaldisksandtheparameters of theirimplementation,fortheselection of accesspathstobesupportedfordatabasesstored on CLVdisks,aswellasfortheretrievalperformanceandtheoptimalqueryprocessingstrategytobechosen.(TheseimplicationsarestudiedindetailinChristodoulakis87b],inwhichisshownthatthesedecisionsdepend on thelocation of dataplacement on thedisk.)Analyticcostestimatesfortheperformance of retrieval of recordsandobjectsfromCLVdisksarealsoderivedinChristodoulakis87b]).Theseestimatesmaybeusedbytraditionalormultimediaqueryoptimizers.Itisshownthattheoptimalqueryprocessingstrategydepends on thelocation of files on theCLVdisk.Thisimpliesthatqueryoptimizersmayhavetomaintaininformationaboutthelocation of files on thedisk.Estimation of SelectivitiesinTextInmultimediainformationsystemsmuch of thecontentspecificationwillbedonebyspecifyingapattern of textwords.Queriesbased on thecontent of imagesaredifficulttospecify,andimageaccessmethodsareveryexpensive.Voicecontentistransformedtotextcontentifagoodvoicerecognition18 ... Ajoinindexcapturesthesemanticlinksthatexistbetweentuples.Ifweviewthejoin of twotuplesasanarcconnectingthosetupleidentifiers,ajoinindexcanrepresentdirectedgraphsinaverycompactway.Therefore,itwillbeveryusefultooptimizegraphoperationsliketransitiveclosure.LetusconsideragainthePARTrelation:PART(pname,weight,price,spname)wherespnameisthename of asubpart(orcomponentpart).AssumingthatPIDandSPIDstandforPARTtupleidentifiers,thenwecanhavetwojoinindices(eachclustered on itsfirstattribute)Jl1(PID,SPID)J12(SPID,PID)J11associatesapart_idwithitssubpart_id’s,whileJ12associatesasubpart_idwithitsparentpart_id.Therefore,Jl1iswellsuitedfortraversalsinthepart—subpartdirection.J12allowsefficienttraversalsthatfollowthesubpart—partdirection.Assumingthatarecursivequeryismappedintoaconceptualquerytree of relationalalgebraoperatorsandtransitiveclosure,thequeryoptimizationalgorithmdiscussedinSection3stillapplies.However,theintroduction of transitiveclosureyieldsalargersolutionspace,sincetransitiveclosuremaybepermutedwithotherrelationaloperators(e.g.,selectandjoin).Thetransitiveclosureoperatorcanbeimplementedefficientlybyaloop of joins,unions,andpossiblydifference(forcyclicrelations).Superiorperformanceisconsistentlyattainedwhentransitiveclosureisappliedusingjoinindexratherthantheprimarycopy of therelationValduriez86a].Forinstance,letusconsidertherecursivequery on thePARTrelation“listthecomponentpartsandtheirpricesforpartA”.Figure3illustratesthecorrespondingquerytreeandapossibleprocessingtree,inwhichtransitiveclosure(notedIC)isappliedtothejoinindex.Theselection“pname=A”precedesthetransitiveclosuresothatonlythosepartsthatare(transitively)components of partAareproduced.InthePT,theresult of thetransitiveclosure on joinindexJIisaset of pairs(PID of A,PID of asubpart of A).Therefore,anadditionaljoinwithrelationPARTisnecessarytocompletethequery.Thus,themostcomplexpart of thequeryisdone on smalldatastructures(selectionindex,joinindex).Thevalue of performingthetransitiveclosureusingjoinindexistoavoidrepeatedaccesstorelationPART,whichispotentiallymuchlargerthanthejoinindex.pname_INDPARTJl1(PID,SPID)PARTapname=Aapname=A/PARTSPID1~1PID‘ITpname,price‘~pname,priceQueryTreePTwithJoinIndexFigure3:Processing of aRecursiveQuerywithJoinIndex5.ConclusionJoinindicesaredatastructuresespeciallydesignedtospeedupjoinoperations.Theincorporation of joinindicesinastoragemodelprovidesthequeryoptimizerwithalargersolutionspaceandhencemoreopportunitiesforoptimization.Wehaveillustratedtheuse of joinindicestooptimizenon—recur-15 ... condition of theform:“Namerestriction”.Therestrictionappliestobothcomponentswhosepath-namesareSender.NameandReceiver.Name.Theproblemistodecidehowsuchaconditionissatisfied.Therearefourpossibileinterpretations:(1)Namerestriction=Trueif(Sender.Namerestriction=True)A(~(Receiver.Namerestriction=True))(2)Namerestriction=Trueif(Sender.Namerestriction=True)A(V(R.eceiver.Namerestriction=True))(3)Namerestriction=Trueif(Sender.Namerestriction=True)V(V(Receiver.Namerestriction=True))(4)Namerestriction=Trueif(Sender.Namerestriction=True)V(3(Receiver.Namere8triction=True))Our system usesthethirdinterpretation,sinceitisthemostgeneral:theanswertoquery(3)containstheanswerstoqueries(1),(2),and(3).Thischoicereflectstheapproach of givingtotheuserthemostgeneralanswers,whenthereareambiguitiesinthequery.Then,theuser,whodidnotknowexactlythetypesdefinedinthedocumentbase,canrefinethetheoriginalqueryspecifyingexactlythemeaning of thequery.Thefourdifferentsemantics,inourquerylanguage,canbespecifiedexplicitlyas:(1)Sender.NamerestrictionandsomeReceiver.Namerestriction(2)Sender.NamerestrictionandeveryReceiver.Namerestriction(3)Sender.NamerestrictionoreveryReceiver.Namerestriction(4)Sender.NamerestrictionorsomeReceiver.NamerestrictionInadditiontotheprevioustypes of conditions,thelanguagemustallowconditions on theexistence of conceptualcomponentswithindocuments.Thisallowsexpressingqueries on theconceptualstructure of documents.Thereforewehavedefinedtheoperator“with”.Aconditioncontainingthe“with”operatorhastheform:“withcomponent”.Thisconditionexpressesthefactthatthecomponentwhosename(orpathname)isgivenmustbeaconceptualcomponent of thedocumentstoberetrieved.Toexpressconditionsthatrequirethataconceptualcomponenthavingnamenarne~iscontainedinaconceptualcomponenthavingnamename,,thepath-namename1*name,isused.The“with”operatorisconceptuallyveryimportantinourquerylanguage.Whiletheotheroperatorsallowthedefinition of conditions on data(ie.documentinstance),the“with”operatorallowsthedefinition of conditiou8 on meta-data(ie.documenttypes).Anexamplequerythatwillbeusedthroughoutthispaperis:finddocumentswhereDocument.Date>/1/1/1987/and(*Sender.Name=“Olivetti”or*ProductYresentationcontains“Olivetti”)and*Product.Descriptioncontains“PersonalComputerl”and(*Address.Country=“Italy”ortextcontains“Italy”)andwith*CompanyLogo;Itshouldbenoticedthatnotypeisspecifiedforthisquery.Aswewillsee,one of thetasksassociatedwithType-LevelProcessingistodeterminethetype(s),ifany,towhichthequeryapplies.3.InitialStepsinQueryProcessingThetask of queryprocessingconsits of severalsteps,some of whichareconcernedwithqueryoptimizationIBERT87I.Inthispaperweconsiderthepre-processingsteps,inwhichsomeinitialactivitiesareperformed,suchasqueryparsingandaccessingthetypecatalog.Alsoduringthisphase,thequeryismodifiedinlight of thetypehierarchy.3.1.ParsingThequeryisparsedbyaconventionalparser.Theparserverifiesthat...
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Báo cáo sinh học:

Báo cáo sinh học: "UWB system based on energy detection of derivatives of the Gaussian pulse" docx

Điện - Điện tử

... synchronization because of the use of correlators [3].Due to the limitations in Rake receivers, many researchers shift their research tonon-coherent UWB methods. As one of the conventional non-coherent ... spreadfor GFSK and PPM systems despite the pulse duration of a GFSK system is twice that of a PPM system. We also verify our conclusion using the Matlab code in [22] and these twosystems both obtain ... study on performance of an IR-UWB receiver based on energy detection, in IEEE International Conference on WiCOM, Dalian, China, pp.1–5, 20083. N He, C Tepedelenlioglu, Performance analysis of non-coherent...
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báo cáo hóa học:

báo cáo hóa học:" UWB system based on energy detection of derivatives of the Gaussian pulse" pdf

Hóa học - Dầu khí

... effect of synchronization errors on system performance is analyzed in Section 5. In Section 6, the numerical results are analyzed. InSection 7, the conclusions are stated.2 System models2.1 System ... The orthogonality of a GFSK system is achieved in thefrequency domain. Although the integration interval and synchronization error also affectperformance of a GFSK system, its orthogonality is ... pulse duration. Although the single pulse duration of a GFSK system is twicethat of a PPM system, but the values of D are almost the same. Because the multipathcomponents in these two system arrive...
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Báo cáo toán học:

Báo cáo toán học: " UWB system based on energy detection of derivatives of the Gaussian pulse" potx

Toán học

... system is at mostone half of that of a PPM system. But this does notmean that the maximum possible data rate of a G FSKsystemisonehalfofthatofaPPMsystem.InUWBchannels, the multipath components ... study on performance of an IR-UWBreceiver based on energy detection. in IEEE International Conference on WiCOM, Dalian, China 1–5 (2008)3. N He, C Tepedelenlioglu, Performance analysis of non-coherent ... bandpass filter with notched band forthe rejection of 5 GHz WLAN using hexagonal multiple mode resonator. inIEEE International Conference on Communication Control and Technologies,Ramanathapuram,...
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Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot

Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot

Hệ điều hành

... â2005 Operating System Concepts 7thEdition, Jan 12, 2005Four Components of a Computer System Four Components of a Computer System 1.13Silberschatz, Galvin and Gagne â2005 Operating System Concepts ... Gagne â2005 Operating System Concepts 7thEdition, Jan 12, 2005Chapter 1: IntroductionChapter 1: Introduction What Operating Systems Do Computer- System Organization Computer- System Architecture ... aspects of system z Loads operating system kernel and starts execution 1.4Silberschatz, Galvin and Gagne â2005 Operating System Concepts 7thEdition, Jan 12, 2005What is an Operating System? What...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí nội dung cụ thể cho từng kĩ năng ở từng cấp độ phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008