Thesis (M.S.)--University of Florida, 2004. / Title from title page of source document. Document formatted into pages; contains 61 pages. Includes vita. Includes bibliographical references.

Thesis (M.S.)--Brigham Young University. School of Technology, 2006. / Includes bibliographical references (p. 65-67).

Thesis--Auburn University, 2008. / Abstract. Vita. Includes bibliographical references (p. 67-68).

Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2009. / Committee Chair: Stasko, John T.; Committee Member: Edwards, Keith; Committee Member: Greenberg, Saul; Committee Member: Grinter, Beki; Committee Member: Guzdial, Mark. Part of the SMARTech Electronic Thesis and Dissertation Collection.

Os objetivos deste trabalho foram desenvolver um dispositivo apontador, com as mesmas funções de um mouse, controlado pelo movimento da cabeça, e comparar a eficiência do dispositivo proposto, utilizando o controle do cursor do computador no modo absoluto e relativo (joystick), operado por dez indivíduos tetraplégicos e por dez indivíduos sem acometimento neuromuscular. A maioria dos parâmetros estudados apresentou diferença significativa, entre as situações de controle absoluto e relativo, para os indivíduos de ambos os grupos, evidenciando que os parâmetros medidos no modo absoluto foram melhores que os medidos no modo relativo. O dispositivo apontador emula adequadamente as funções de deslocamento do cursor, mostrando que o modo de controle absoluto é mais eficiente que o modo de controle relativo / The objectives of this study were to develop a head controlled pointer device with mouse functions and compare its performance when operated in absolute versus relative (joystick like) modes by ten quadriplegic subjects and ten people without neuromuscular impairment. The device was composed of a video camera, a computer program and a reflective paper target attached to a cap which was then placed on the user´s head. Most of the measured parameters revealed a significant difference between the control modes, favouring the absolute one, for both studied groups. The developed head pointer adequately emulates the computer cursor displacement, with the absolute control mode being functionally more efficient than the relative control mode in this study.

Thesis (Ph.D.)--University of Alberta, 2009. / A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Neuroscience, Centre for Neuroscience. Title from pdf file main screen (viewed on October 18, 2009). Includes bibliographical references.

Os objetivos deste trabalho foram desenvolver um dispositivo apontador, com as mesmas funções de um mouse, controlado pelo movimento da cabeça, e comparar a eficiência do dispositivo proposto, utilizando o controle do cursor do computador no modo absoluto e relativo (joystick), operado por dez indivíduos tetraplégicos e por dez indivíduos sem acometimento neuromuscular. A maioria dos parâmetros estudados apresentou diferença significativa, entre as situações de controle absoluto e relativo, para os indivíduos de ambos os grupos, evidenciando que os parâmetros medidos no modo absoluto foram melhores que os medidos no modo relativo. O dispositivo apontador emula adequadamente as funções de deslocamento do cursor, mostrando que o modo de controle absoluto é mais eficiente que o modo de controle relativo / The objectives of this study were to develop a head controlled pointer device with mouse functions and compare its performance when operated in absolute versus relative (joystick like) modes by ten quadriplegic subjects and ten people without neuromuscular impairment. The device was composed of a video camera, a computer program and a reflective paper target attached to a cap which was then placed on the user´s head. Most of the measured parameters revealed a significant difference between the control modes, favouring the absolute one, for both studied groups. The developed head pointer adequately emulates the computer cursor displacement, with the absolute control mode being functionally more efficient than the relative control mode in this study.

Increasingly abundant access to data and cheaper display technology costs are creating an exciting opportunity to create new information awareness tools that can present information calmly through peripheral and ambient interfaces. These tools offer the potential to help people better manage their attention and to avoid information overload. Different people, however, have distinct information needs, and customizing these systems is often difficult. Existing interfaces typically provide too coarse or too fine a granularity of customization, resulting in tools that are too rigid or too difficult to configure. We present an extensively customizable information awareness system, The Buzz, that supports end users, tinkerers, and developers at using, modifying, creating, and sharing powerful and flexible customizations. These customizations are powerful in the sense that the user can control abstract behaviors of the system, and flexible in the sense that the complexity of the customization can vary with the power needed to express it. We further chart the broader information awareness customization space through the lens of existing customizable information tools. Through this analysis, we show that this system provides more extensive customization capabilities than other customizable awareness applications, without requiring significant programming.

Diss. (sammanfattning) Göteborg : Univ., 2003. / Härtill 5 uppsatser. Del av upplagan utan uppsatser.

Abstract The purpose of this study was to investigate the quality of displays at radiology departments and healthcare centers, viewing conditions, quality control practices and user experiences of viewing radiological images from displays during 2007. The study aimed to provide guidelines to improving the quality of image viewing from displays and viewing conditions in healthcare. The data was gathered from radiology departments at university hospitals in Finland and healthcare centers in the treatment area of responsibility of the Oulu University Hospital. Display technology, quality control practices and users experiences of viewing were determined using questionnaires. Technical measurements were performed in order to acquire information on displays performance and viewing conditions. In addition, observation was used to evaluate viewing conditions. Almost all displays at radiological departments were applicable for diagnostics. At healthcare centers all displays were inapplicable for diagnostics. Both organization groups had displays using obsolete cathode ray tube technology and these displays did not pass current acceptance criteria. Most radiology departments had viewing conditions which were compatible with existing guidelines, whereas at healthcare centers lighting conditions were too bright for viewing radiological images from displays. Acceptance testing was done only for few of the displays and quality control was not performed regularly. Personnel responsible for quality assurance felt they were provided with inadequate resources for performing display quality control. Clinicians at healthcare centers did not identify the poor performance of displays. Radiologists and clinicians at healthcare centers rarely performed quality assurance for displays. The quality of displays, viewing conditions and the assessment of display performance at healthcare organizations was not at the level required by the existing guidelines. Both the cathode ray tube displays and uncalibrated liquid crystal displays should either be replaced with new ones or calibrated. Lighting and positioning of displays ought to be rearranged in order to diminish reflections. Furthermore, doctors ought to be able to rearrange lighting conditions with ease. More resources ought to be directed to display quality control and different quality control practices should be unified. Both the users and the quality control personnel should also be provided with more training in display quality control. Regular display quality control should be extended to all healthcare organizations. Clinicians working at healthcare centers should be provided with adequate training in the use of image viewing software. / Tiivistelmä Tämän tutkimuksen tarkoituksena oli selvittää vuoden 2007 aikana radiologisten yksiköiden ja terveyskeskusten radiologisten kuvien katseluun tarkoitettujen näyttöjen laatu, kuvankatseluolosuhteet ja laadunvalvontakäytännöt sekä käyttäjien kokemuksia röntgenkuvien katselusta näytöiltä. Tutkimuksen tavoitteena oli antaa toimenpide-ehdotuksia kuvankatselun ja kuvankatseluolosuhteiden kehittämiseksi terveydenhuollossa. Aineisto muodostui otoksesta viiden yliopistollisen sairaalan radiologisista yksiköistä ja Oulun yliopistollisen sairaalan erityisvastuualueen terveyskeskuksista. Näyttöjen laitekanta, laadunvalvontakäytännöt ja lääkäreiden kokemuksia näyttötyöskentelystä selvitettiin kyselyllä. Mittausten ja havainnoinnin avulla saatiin tietoa näyttöjen suorituskyvystä ja kuvankatselutilojen valaistusolosuhteista. Radiologisten yksiköiden näytöt olivat teknisesti pääosin radiologisista kuvista tehtävään diagnostiikkaan soveltuvia. Terveyskeskuksissa käytettiin näyttöjä, jotka eivät soveltuneet diagnostiikkaan. Molemmissa ryhmissä poistuvaan katodisadeputkitekniikkaan perustuvia näyttöjä oli vielä käytössä, eikä yksikään mitatuista näytöistä saavuttanut hyväksyttävyyskriteereitä kaikkien suorituskyvyn mittaustulosten osalta. Suurimmassa osassa radiologisten yksiköiden työpisteissä huoneen valaistus oli suositusten mukainen, kun taas terveyskeskuksissa huoneiden valaistus oli liian voimakas radiologisten kuvien katseluun käytetyillä näytöillä. Vastaanottotarkastus oli tehty vain pienelle osalle näytöistä ja säännöllistä laadunvalvontaa tehtiin näytöille vähän. Laadunvalvojat kokivat resurssit riittämättömiksi näyttöjen laadunvalvontaan. Terveyskeskuslääkärit eivät itse tunnistaneet näytön huonoa suorituskykyä. Radiologit ja terveyskeskuslääkärit tekivät laadunvalvontaa käyttämilleen näytöille hyvin vähän. Tutkimuksen kohteena olleissa radiologisissa yksiköissä ja terveyskeskuksissa röntgenkuvien katseluun tarkoitettujen näyttöjen laatu, valaistusolosuhteet ja laadunvalvonta eivät vastanneet suosituksia. Katodisädeputkinäytöt ja kalibroimattomat nestekidenäytöt tulisi vaihtaa uusiin tai kalibroida. Valaistusta ja näyttöjen sijoittelua tulisi muuttaa heijastusten vähentämiseksi. Lisäksi lääkärillä tulisi olla mahdollisuus muuttaa valaistusta helposti. Näyttöjen laadunvalvontaan tulisi saada enemmän resursseja, laadunvalvontakäytännöt tulisi yhtenäistää ja käyttäjille sekä laadunvalvojille tulisi antaa lisää koulutusta näyttöjen laadunvalvontaan. Säännöllinen näyttöjen laadunvalvonta tulisi ulottaa kaikkiin terveydenhuollon organisaatioihin. Terveyskeskuslääkäreille tulisi antaa koulutusta kuvankatseluohjelmien käyttöön.