• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 81
  • 13
  • 12
  • 11
  • 8
  • 4
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • Tagged with
  • 164
  • 82
  • 35
  • 32
  • 20
  • 19
  • 18
  • 18
  • 16
  • 14
  • 13
  • 12
  • 11
  • 11
  • 10
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Tecnologia assistiva: um teclado virtual evolutivo para aplicação em sistemas de comunicação alternativa e aumentativa

Loja, Luiz Fernando Batista 03 December 2015 (has links)
People withmobilityandspeechrestrictionssimultaneoushaveverbalcommunicationandbody language impaired.Inthemostextremecasesthepatientsaredeprivedofalltheirmovements and speechcapabilities.ThissituationischaracterizedastheLocked-inSyndrome(LIS).The augmentativeandalternativecommunicationtechnologiesprovidemethodsandsoftwaresthat allowthesepatientstocommunicatewiththeexternalenvironmentandpeoplearoundthem. Among thevariousmethodsandexistingcommunicationprogramswecanhighlightthevirtual keyboard.However,datainputusingthiskindofkeyboardisconsiderablyslowerandmore tiresome forpeoplewithLIS.Thisworkaimstobuildanassistivevirtualkeyboardtoassist patients withseveremobilityrestrictionsandspeechtocommunicate.Toachievethisgoalit wasconductedtwosystematicreviewsandaliteraturereview.Fromtheknowledgegained from theseresearchswemodeledanddevelopedanassistivevirtualkeyboard.Moreover,we designed andimplementedanevolutionarymethodologythatallowsthekeyboardtoadaptitself to user svocabularyandwritingmode.Finally,anexperimentthatcomparesthetraditional method keyboardsoptimizationwiththemethodologyproposedinthisthesiswascarriedout. / Pessoas comrestriçõesmotorasedefalasimultâneastêmacomunicaçãoverbalealinguagem corporal prejudicadas.Noscasosmaisextremosopacienteéprivadodetodososseusmovimen- tos edacapacidadedefala.EssasituaçãoécaracterizadacomoaSíndromedoEncarceramento (SE). Astecnologiasdecomunicaçãoaumentativaealternativasãoresponsáveisporproporcio- narem métodose softwares que possibilitamacomunicaçãodospacientescomoambienteeas pessoas queoscercam.Entreosváriosmétodoseprogramasdecomunicaçãoexistentespode-se destacar otecladovirtual.Porém,aentradadedadosutilizandotecladosvirtuaiséconsidera- velmentemaislentaecansativaparapessoascomSE.Oobjetivodestetrabalhoéconstruirum teclado virtualassistivoparaauxiliarpacientescomrestriçõesmotorasgravesedefalaaseco- municarem. Paraatingiresseobjetivoforamrealizadasduasrevisõessistemáticaseumarevisão de literatura.Apartirdoconhecimentoadquiridodessasrevisõesfoimodeladoedesenvolvido um tecladovirtualassistivo.Alémdisso,foielaboradaeimplementadaumametodologiaevolu- tivaquepermiteotecladoseadaptaraovocabulárioeomododeescritadousuário.Finalmente, foi realizadoumexperimentoquecomparaométodotradicionaldeotimizaçãodetecladoscom a metodologiapropostanestatese. / Doutor em Ciências
162

UTVECKLING AV PROCESSORPLATTFORM / DEVELOPMENT OF µP PLATFORM

Hassanzadeh, Rahman January 2007 (has links)
Abstract   The purpose of this project is to develop a modular processor card which is intended to work as a platform for Kitron Development Karlskoga. The modular processor card is meant to be used as a control system in development projects, mainly in medical and industrial products. The processor card will consist of a central unit with the basic functions for a control system. Furthermore there will be complete modules with machine commodity and programming, to pick exactly the necessary functions for a specific application.   With consideration to the specification of the development and the main unit, I chose an adequate microprocessor (AT90CAN32) as core and interface circuits to stated border areas.   The construction is first completed in the program MultiSim and then remade in the program OrCAD Capture. The programming language C was used in the software model. Then a layout was created in the program Ultiboard.   The project has resulted in the manufacture of a pattern card that can manage I/O units, such as D/A-converter, keyboard, display and serial port RS-232. The purpose was that the units should communicate with the processor. The application decides what the main unit is used for.   The D/A-converter was governed through SPI commands and the result was shown on an instrument (voltage). With the keyboard I was able to write digits to the processor and the result was shown on the display. The keyboard was used to send digits to the processor and was then sent through RS-232 to the PC. In the PC, a terminal program was used to receive digits.   A general platform has been developed through this project, where you can choose which functions you wish to use (see the building block in figure no.1). / Sammanfattning   Projektets syfte var att utveckla ett modulärt uppbyggt processorkort som är tänkt att fungera som en plattform för Kitron Development Karlskoga i utvecklingsprojekt av ett kontrollsystem främst i medicin- och industriprodukter. Processorkortet skall bestå av en kärna med de grundläggande funktionerna för ett kontrollsystem. Sedan skall det finnas färdiga moduler, maskinvaru- och programvarumässigt, att plocka in för att få just de funktioner man behöver för en speciell applikation.   Med avseende på utvecklingsspecifikationen och definitionen av huvudenheten valde jag en lämplig mikroprocessor (AT90CAN32) som kärna och interfacekretsar till angivna gränsytor.   Konstruktionen genomfördes först i programmet MultiSim och ritades sedan om i programmet OrCAD Capture. Till mjukvarudelen användes programmeringsspråket C. Sedan skapades layouten i programmet Ultiboard.   Projektet har resulterat i att ett mönsterkort har tillverkats som kan hantera I/O-enheter, t.ex. D/A-omvandlare, tangentbord, display och serieporten RS-232. Dessa enheter skulle kommunicera med processorn. Applikationen avgör vad enheten skall användas till.   D/A-omvandlaren styrdes via SPI-kommando och resultatet avlästes på en voltmeter. Med hjälp av tangentbordet kunde jag skriva tecken som skickades till processorn, varifrån resultatet sändes vidare och blev synligt på displayen. Ett tangentbord användes för att skicka tecken till processorn som sände dessa vidare via RS-232 till en PC. I PC:n  används ett terminalprogram för att ta emot tecken.   Genom projektet har en generell plattform tagits fram där man kan välja de funktioner man önskar (se byggblocket i figur 1).
163

Berättande elevtexter skrivna med penna och på tangentbord i årskurs 4 och 6 : Jämförelser av textlängd, narrativ kvalitet, lexikal variation och stavning / Narrative texts written by students with pen and keyboard in grades 4 and 6 : Comparisons of text length, narrative quality, lexical diversity, and spelling

Örs, Ebru, Constantinescu, Marie January 2024 (has links)
Denna studie jämför berättande elevtexter som är skrivna med penna och på tangentbord i årskurs 4 och 6. Jämförelsen görs både mellan redskapen inom årskurserna och mellan årskurserna. Studien omfattar 29 texter från årskurs 4 och 27 texter från årskurs 6. Antalet deltagare var 15 elever i årskurs 4 och 15 elever i årskurs 6. Elevtexterna analyserades utifrån fyra olika aspekter: textlängd, narrativ kvalitet, lexikal variation och stavning. Resultatet inom årskurs 6 visade att eleverna skrev signifikant längre texter på tangentbord. Eleverna i årskurs 4 presterade bättre med penna gällande narrativ kvalitet och lexikal variation, men presterade däremot bättre på tangentbord gällande textlängd och stavning. Dessa skillnader var dock inte statistisk signifikanta. Resultatet diskuteras utifrån simple view of writing.
164

Vysokofrekvenční měřič výkonu / RF power meter

Hlaváč, Štěpán January 2013 (has links)
This master’s thesis describes various principles of measurement of electromagnetic waves in a free space and on a line. Used sensors and their real parameters are given for every method. The analysis of protections of high-frequency inputs of measuring instruments is done here and the most suitable method and protections of input for realization are chosen. The analysis of design of secondary protection of high-frequency input is done in this project. The protection of input is realized and measured. The suitable method of measurement is chosen as well as the sensor for measurement of power. The block diagram and circuit diagram of the meter of power are designed. According to designed conception the measuring instrument for measurement of power is realized and its single qualities are measured during the realization. In the final part its precision is measured and the evaluation of results is done.

Page generated in 0.0197 seconds