Dissertations / Theses on the topic 'Usability'
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Howarth, Jonathan Randall. "Supporting Novice Usability Practitioners with Usability Engineering Tools." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/27064.
Full textPh. D.
Waegner, Lars, Philipp Schupp, Lisa Lahr, Janina Mau, Julia Richter, Ina Pilz, and Annett Wolf. "Usability - Bericht." Thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-78532.
Full textCampello, Silvio Romero Botelho Barreto. "Usability for learning : a socio-cultural approach to the usabilty of VLEs." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437132.
Full textVelander, Alexander. "Aiding Web Usability : Integrating usability with Web Content Management Systems." Thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-13517.
Full textKeenan, Susan Lynn. "Product usability and process improvement based on usability problem classification." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/39100.
Full textPh. D.
Capra, Miranda Galadriel. "Usability Problem Description and the Evaluator Effect in Usability Testing." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/26477.
Full textTen guidelines for writing UPDs were developed by consulting usability practitioners through two questionnaires and a card sort. These guidelines are (briefly): be clear and avoid jargon, describe problem severity, provide backing data, describe problem causes, describe user actions, provide a solution, consider politics and diplomacy, be professional and scientific, describe your methodology, and help the reader sympathize with the user. A fourth study compared usability reports collected from 44 evaluators, both practitioners and graduate students, watching the same 10-minute UT session recording. Three judges measured problem detection for each evaluator and graded the reports for following 6 of the UPD guidelines.
There was support for existence of an evaluator effect, even when watching pre-recorded sessions, with low to moderate individual thoroughness of problem detection across all/severe problems (22%/34%), reliability of problem detection (37%/50%) and reliability of severity judgments (57% for severe ratings). Practitioners received higher grades averaged across the 6 guidelines than students did, suggesting that the guidelines may be useful for grading reports. The grades for the guidelines were not correlated with thoroughness, suggesting that the guideline grades complement measures of problem detection.
A simulation of evaluators working in groups found a 34% increase in severe problems found by adding a second evaluator. The simulation also found that thoroughness of individual evaluators would have been overestimated if the study had included a small number of evaluators. The final recommendations are to use multiple evaluators in UT, and to assess both problem detection and description when measuring evaluation effectiveness.
Ph. D.
Gellner, Michael. "Usability evaluation patterns best practices zur Durchführung von Usability-Evaluationen." Saarbrücken VDM Verlag Dr. Müller, 2004. http://d-nb.info/988799375/04.
Full textJordan, Patrick William. "Consistency and usability." Thesis, University of Glasgow, 1993. http://theses.gla.ac.uk/5577/.
Full textDe, Klerk W. A. (Willem Abraham). "Web site usability." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52610.
Full textENGLISH ABSTRACT: A multitude of factors affects the experience of the user on a specific site. Slow downloading, navigational difficulties and complex designs all play a role in destroying what could be an enjoyable experience to the user. Usability exists when the design of the system matches what the intended end users need and want. Most Web site designers agree that great design essentially has the user as its priority. Companies tend to forget that the user's hand is on the mouse. The most successful Web sites are those that not only respond to user feedback, but actively seek it out. We have to realise that the cost of flipping to another Web site is so low, it doesn't make any sense for people to go back to a site that failed them the first time. Most Web sites fail miserably at their prime directive: usability. The best way to run a user test is one-on-one, writes Fleming (1998:1). You don't need a large quantity of users for the tests to be effective. The costs in user testing are often exaggerated and there is no excuse for not performing some sort of user test on your Web site. When a page comes up Jakob Nielsen says, people look only one place, in the middle, at the content. (Head, 1999:2) If a page does not appear relevant to the user's current goals, then the user will ruthlessly click the Back button after as little as two to three seconds. Users rarely look at logos, mission statements, slogans, or any other elements they consider fluff. Usability is practically guaranteed if you have a solid information architecture at the outset. Make sure information is not more than two clicks away from the homepage. (Radosevich, 1997:3) According to the GVU7 survey, speed is the number one complaint of Web users (76,5 %). (Hamilton, 1997:1) Since users need web pages to load quickly, you should make your image files small. Try to limit the size of individual images to 5k, and try to limit the total size of all the images on any single page to 20k. Generally, a user with a 28.8 modem should have a sense of the page content or be able to navigate off the page within 10 seconds of download. The rest of the page should load within the next 30 seconds. Any site needs a good search feature since even the best navigation support will never be enough. (Nielsen, 1996a: 1) A search function should be provided if the site has more than 100 pages. Even if you haven't created perfect navigation, at least be consistent. (Berst, 1998: 1) The Back button is the lifeline of the Web user and the second-most used navigation feature (after following hypertext links). People rarely read web pages word by word - they scan pages to find the information they want. Make the text scannable with bulleted lists, highlighted keywords, meaningful headings, and short sections of text. The essential purpose of graphics, especially animated graphics, is to set the tone and communicate the company's personality in a unique and fun way. (Heath, 1997:1)
AFRIKAANSE OPSOMMING: 'n Menigte faktore beïnvloed die gebruiker se ondervinding van 'n spesifieke Webblad. Aflaai spoed, navigasie en komplekse bladontwerp kan almal 'n gebruiker se belewenis van 'n Webblad verongeluk. Bruikbaarheid (Usability) bestaan wanneer die ontwerp van die sisteem voldoen aan die behoeftes van die eindgebruiker. Web ontwerpers het dit eens dat goeie ontwerp die gebruiker se behoeftes as prioriteit sien. Maatskappye vergeet dikwels dat die gebruiker se hand die muis beheer. Die mees suksesvolle Webblaaie is nie net die wat reageer op verbruiker terugvoer nie maar dit selfs aanmoedig. Ons moet verstaan dat dit so maklik is om na 'n volgende Webblad te spring dat dit nie sin maak om terug te keer na 'n Webblad wat jou eenkeer in die steek gelaat het nie. Die meeste Webblaaie misluk tragies in hul poging tot bruikbaarheid. Die beste gebruikerstoets metode is een-tot-een, skryf Heming (1998: 1) Die toets lewer betekenisvolle resultate selfs met enkele gebruikers. Nielsen sê gebruikers stel deesdae net in inligting belang. Indien inligting irrelevant voorkom sal die gebruiker nie skroom om die "Back" sleutel te gebruik nie. Gebruikers kyk selde na logos, missie stellings en slagspreuke en beskou dit as onbenullighede. Maak seker dat inligting nie meer as twee klikke vanaf die tuisblad is me. (Radosevich, 1997:3) Die GVU7 studie het bevestig dat aflaaispoed die gebruikers se grootste beswaar is.(Hamilton, 1997: 1) Enige Webblad benodig 'n goeie soek ("search") funksie veral as die Webwerf meer as 100 bladsye het. Die "back" sleutel is die reddingslyn van die gebruiker en die tweede mees gebruikte sleutel op navigasiestelsel. Gebruikers lees selde woord vir woord wat voor hulle staan, maar skandeer eerder 'n blad. Hou dus teks kort, met kort sinsnedes en kort kragtige begrippe. Grafieke se hoofdoel is om Webblad atmosfeer op unieke wyse te skep.(Heath,1997:1)
Speicher, Maximilian. "What is Usability?" Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-159949.
Full textWilliams, Andrea E. Gilbert Juan E. "Usability size N." Auburn, Ala., 2007. http://hdl.handle.net/10415/1386.
Full textDunlea, Allen Leo. "Evaluating Usability Evaluations." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1014.
Full textSublette, Michelle A. "USABILITY IS NOT JUST USABILITY: DISCOVERING THE STRATEGIES USED BY NON-EXPERTS IN MAKING USABILITY PREDICTIONS." UKnowledge, 2017. http://uknowledge.uky.edu/psychology_etds/114.
Full textFaulkner, Xristine. "The impact of usability : integrating usability engineering into the computing curriculum." Thesis, London South Bank University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412420.
Full textBjelkenstedt, Alf. "Web-Based Drawing Tool in GWT with Usability Testing and Usability Evaluation." Thesis, Linköpings universitet, Programvara och system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-104975.
Full textSwartz, Kent Olen. "Virtual Environment Usability Assessment Methods Based on a Framework of Usability Characteristics." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34890.
Full textDeveloping economical yet effective methods of incorporating usability engineering as an integral part of software engineering is a primary focus of human-computer interaction (HCI) research. However, much HCI research has focused primarily on inspecting and evaluating applications supporting command-line or graphical user interface (GUI) interaction styles. With the dramatic increase in virtual environment (VE) research in recent years, the HCI community is beginning to place an added emphasis on creating methodologies to ensure usability in VE development. While the demand for VE-specific usability engineering methods and criteria is dire as the amount of money invested by military, government, commercial, and industrial organizations continues to grow, widely accepted methodologies for assessing VE usability are, at this point in time, minimal. There has been a recent increase in research discussing the need of VE-specific usability engineering methodologies, but few research projects have concentrated their efforts on providing such methodologies. Therefore, application developers attempting to apply a user-centered design approach in constructing VEs must often perform largely ad-hoc assessments or in-house evaluations using existing non-VE-specific usability engineering methodologies.
The primary focus of this research was to develop a method to guide usability engineering of VEs. The strategy used to develop this usability evaluation method was to modify existing usability evaluation methodologies to support VE development by leveraging the results of previous VE usability research performed at Virginia Tech and elsewhere. The result was a VE-specific usability evaluation methodology that encompasses two existing usability assessment techniques: usability inspections and formative evaluations. We applied this methodology to Crumbs, an immersive visualization VE developed at the National Center for Supercomputing Applications (NCSA).
A multi-dimensional framework of VE usability characteristics was a topic of research at Virginia Tech. This framework provided the backbone for VE-specific modifications to the existing usability evaluation techniques proposed in this research. Framework design guidelines permitted usability specialists to perform guidelines-based usability inspections of Crumbs. Results gathered from the guidelines-based usability inspections were used not only to redesign the Crumbs user interface but also drive creation of a formative evaluation plan. Application of the methodology not only uncovered usability issues with Crumbs, but also provided invaluable information regarding the effectiveness of the methodology itself. We conclude this thesis by describing a usability evaluation methodology, called the Modified Concept Book Usability Evaluation Methodology, proposed to improve the usability evaluation methodology performed on Crumbs and other VEs. Our methodology was adapted from an established methodology for performing content analysis on a large volume of qualitative data.
Because the realm of VEs is so vast and diverse in application domains and devices, we do not claim that our methodology supports an exhaustive usability evaluation of all VEs. However, the proposed technique is a first attempt at modifying existing usability evaluation methods, and therefore can be used as a launching pad for methodologies to evaluate other aspects of specific VE applications.
Master of Science
Berges, Vanessa. "Die Usability suchmaschinenbasierter Bibliothekskataloge." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-107527.
Full textSampath, Krishna. "Visual aesthetics and Usability." Thesis, Linköpings universitet, Interaktiva och kognitiva system, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-97706.
Full textHough, Darren William. "Aesthetics and product usability." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/23107.
Full textRöning, Nadia. "Usability Analysis of SmartPaint." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234484.
Full textHyde, Joanne Krysia. "Multi-modal usability evaluation." Thesis, Middlesex University, 2001. http://eprints.mdx.ac.uk/6693/.
Full textSmith, Pauline. "Navigating hyperspace : assessing usability." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240543.
Full textBonas, Calvin (Calvin A. ). "Re-usability of plastics." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32877.
Full textIncludes bibliographical references (p. 42-43).
A research project was designed in order to learn more about the quality of recycled plastics when compared to new material. The study was carried out by researching and learning about how the recycling process operates. Further research was then conducted on the seven different types of resins that exist in the recycling world today. After collecting the data, an experiment was devised in order to learn more about the capabilities of using recycled plastics for regular household applications. The results of the experiment showed that most of the seven recyclable plastics could actually be used again as along as special care was taken to ensure that the quality of the recycled product was equivalent to that of the virgin material. However, it was determined that a more rigorous recycling program for plastic would be feasible but it is not a practical endeavor for economic purposes. As a result, many of the manufacturers within the plastics realm prefer to use new plastic as opposed to recycling their products.
by Calvin Bonas.
S.B.
Kodiyalam, Narayanan Gopalakrishnan. "Remote Usability Evaluation Tool." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/33324.
Full textMaster of Science
Buccarella, Bruno. "Generazione automatica di applicazioni web: widget usabili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3168/.
Full textJonsson, Andreas. "Usability in three generations business support systems - Assessing perceived usability in the banking industry." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91321.
Full textPärsson, David. "Guidelines for Web Application Usability." Thesis, Linköping University, Department of Computer and Information Science, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56996.
Full textMore people are connecting to the Internet, by using computers and other devices. At the same time web applications are replacing locally installed applications. This makes web application usability an interesting and important subject.
The aim of this thesis was to find a set of usability recommendations and guidelines specifically suited for web-based applications. The guidelines were derived both from studies on how web applications and regular web sites should be designed, usability studies for locally installed applications as well as more general usability and interaction design guidelines.
A prototype was created based on the list of guidelines. The prototype was then evaluated from a usability perspective, using heuristic evaluation with Nielsen’s 10 usability heuristics, to test the validity of the guidelines.
The results of the evaluation says that while the list of guidelines can be used to help creating usable web applications, following the guidelines is not alone a mean of getting rid of all usability problems.
Holmquist, Martina, and Ann-Marie Pettersson. "The Usability in IT-system." Thesis, Blekinge Tekniska Högskola, Institutionen för arbetsvetenskap och medieteknik, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1659.
Full textAnvändbarhet är ett populärt ord i dagens IT-samhälle, men vad innebär det egentligen? I kandidatrapporten vill vi betona begrepp som användbarhet, design, användare och användarnas deltagande i design processen. Kandidatrapporten har ett människo-centrerat synsätt i utveckling av program. Vi har utvärderat användbarheten i ett system. I kandidatrapport finns resultat från vår utvärdering och metoderna vi tillämpat. Vårt bidrag är motiverade designförslag. Vi hoppas ni uppskattar läsningen!
Martina Holmquist Lotsgatan 27B 374 34 KARLSHAMN, 0454-88188 Ann-Marie Pettersson Lurevägen 285-30 374 91 ASARUM, 0454-326176
Sjöberg, Hanna. "A GUI Designer's Usability Toolbox." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik och datavetenskap, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2995.
Full textPersson, Hannes, and Christian Toft. "Support usability in online communities." Thesis, Blekinge Tekniska Högskola, Institutionen för arbetsvetenskap och medieteknik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2570.
Full textDenna uppsats kommer att dela på konceptet medlems-feedback i online communities i tre olika typer, nämligen feedback genom konversation, beteende och community innehåll. Vi kommer att argumentera för fördelarna med att involvera användarna i design processen och hur de tre olika typerna av feedback kan användas i denna process. Genom att kombinera traditionella metoder som tex. personas och fokus grupper med dessa typer av feedback kan ett användbarhets mål uppnås.
Hannes Persson 0702-229542 Christian Toft 070-7981770
Borälv, Erik. "Design and usability in telemedicine." Licentiate thesis, Uppsala universitet, Avdelningen för människa-datorinteraktion, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-86020.
Full textAdikari, Sisira, and n/a. "Usability Modelling For Requirements Engineering." University of Canberra. Information Sciences & Engineering, 2008. http://erl.canberra.edu.au./public/adt-AUC20081204.145827.
Full textKaur, Kulwinder. "Designing virtual environments for usability." Thesis, City University London, 1998. http://openaccess.city.ac.uk/7567/.
Full textAlShamari, Majed Aadi. "Task formulation in usability testing." Thesis, University of East Anglia, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533712.
Full textIbrahim, Ag Asri Ag. "Usability inspection for sonification applications." Thesis, University of York, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479510.
Full textTRISTAO, MARCIO LUIZ RODRIGUES. "WEB 2.0: STRATEGY AND USABILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12035@1.
Full textEsta pesquisa teve a finalidade de entender a estratégia e a usabilidade dos badges no contexto da Web 2.0, nome dado a fase atual da Internet. Os badges são trechos de código disponibilizados por alguns sites para serem acoplados a outros, com a função de importar o conteúdo - gerado pelos usuários ou não - de maneira dinâmica. A hipótese levantada nesta pesquisa afirma que a inexistência de orientações claras sobre qual a melhor forma de comunicar a disponibilidade dos badges em um site e a falta de um conjunto de boas práticas para tornar o uso dos badges simples, fácil e, principalmente, viral pode ser um empecilho para a utilização deste recurso por um maior número de pessoas. Para comprovar esta hipótese a metodologia de pesquisa aplicada foi baseada em questionário enviado aos autores de blogs, diários virtuais de fácil atualização dentro do conceito da Web 2.0. A partir dos resultados obtidos é possível afirmar que estes usuários já usam badges, acreditam que os badges agregam valor aos seus blogs e são uma maneira de trazer conteúdo publicado (por eles ou não) para o seu blog. Além disso, ficou claro que a escolha de badges é descentralizada, ocorrendo principalmente nos sites onde o blogueiro navega regularmente e/ou em outros blogs que já usam badges. Também ficou evidente a necessidade de identificar os badges usando ícone e nome.
This research had the purpose of understanding the strategy and usability of the badges in the context of the Web 2.0, name given to the current Internet phase. The badges are excerpts of codes that some websites make available to be coupled one with another, with the function of importing the content - generated by users or not - in a dynamic way. The given hypothesis affirms that the non existence of clear orientations about the best way to announce the availability of badges in a website and the lack of an amount of good practices to turn the usage of the badges simple, easy and, mainly, viral can be an impediment to the usage of this resource by a biggest number of people. To prove this hypothesis it was used a methodology of research based on questionnaire sent to the authors of blogs - virtual diaries of easy update inside the context of the Web 2.0. According to the results, it s possible to affirm that these users already use badges, they believe that badges aggregate value to their blogs and are a way of bringing published content (by them or not) into the their blog. It s clear that the choice of badges isn t centralized, occurring mainly in websites where the blogger usually goes to and/or other blogs that already use badges. It s also evident the necessity of identifying the badges using an icon and a name.
Svedin, Elin. "Usability evaluations of vectorgraphic editors." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-310916.
Full textMachado, Ana Teresa Martins. "Usability : impact on e-commerce." Doctoral thesis, Instituto Superior de Economia e Gestão, 2011. http://hdl.handle.net/10400.5/2959.
Full textWhile many factors can affect a Web site's ability to attract new customers, retain current customers, and efficiently facilitate online transactions, usability is becoming increasingly more important, particularly in light of the increased use of the Internet by both businesses and consumers. Numerous researchers and Web development practitioners have proposed various techniques and instruments for measuring usability however there is still no consensus on how to measure Web site usability. Of particular concern to designers of Web sites is the question of whether consumers' reactions to a Web site are likely to induce subsequent visits or purchases from the site in the future Thus a theoretical model of Web site usability would provide a better understanding on the influence of Web site usability on online consumer's perceptions. Bearing in mind the call for a better understanding of the usability effects on consumer behaviour this study has two research objectives: (1) to propose and validate Web site usability constructs that mainly captures human perceptions on Web site sability; (2) to propose and validate a theoretical model of Web site usability by adopting the Technology Acceptance Model (TAM). To provide evidence in support of the first question, this study will create valid and reliable instruments for measuring Web site usability. To provide evidence in support of the second question, this study will investigate the relationship between Web site perceived usability and consumers' beliefs, attitude and behaviour intentions towards Web sites in the context of e-commerce, through the inclusion of usability constructs within the Technology Acceptance Model.
Os sítios em contexto de comércio electrónico na Web são a principal interface entre vendedores e compradores, tendo como principal objectivo atrair, manter clientes e influenciar comportamentos de compra. A usabilidade tem sido definida de múltiplas maneiras por académicos e profissionais, não existindo um consenso na forma como se mede a usabilidade de sitios da Web. Apesar da reconhecida importância da usabilidade dos sítios da Web, sobretudo ao nível dos designers, é limitada a existência de estudos empíricos que avaliem o modo como a usabilidade influencia o comportamento de compra do consumidores na Internet, através da experiência de utilização do sítio da Web e gerar fidelização Com este estudo pretende-se (1) identificar as dimensões do construto da usabilidade (2) pereceber de que forma a usabilidade tem impacto no comportamento do consumidor. Face a este objectivo, serão criadas e empiricamente validades métricas para avaliação da usabilidade de sitios na Web em contexto de comércio electrónico, assim como será desenvolvido um modelo teórico que examina a relação entre a usabilidade dos sitios na Web e as atitudes e intenções dos potenciais consumidores, com base na aplicação do Modelo de Aceitação Tecnológica.
Toivanen, J. (Joona). "Usability in Finnish ICT industry." Master's thesis, University of Oulu, 2015. http://urn.fi/URN:NBN:fi:oulu-201511212159.
Full textAldoihi, Saad. "Product Usability Driven System Engineering." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAE004.
Full textUsability is vital to every functioning system, especially when the functioning system is intertwined with people's safety and needs. Radiological diagnosis is a critical tool for identifying diseases and tumors. Therefore, its usefulness is beyond questionable despite the risk of radiation. In general, Medical devices follow a trend, just like consumer electronic products, where they are becoming more complicated and performance is doubling every two years. Consequently, medical devices require a multidisciplinary team for design and development. Therefore, with so many commands and systems to deal with, users' cognitive loads are challenged to effectively execute commands. In fact, Current radiology practices face extreme pressure on available resources with demands of multi-dimensional requirements. Technicians are at the center of a constant drive for optimal productivity and optimization with the minimal possible resources. In medical devices, the cognitive workload will play more of a role because it uses advanced technology, is extremely expensive and takes a great deal of specialization to operate. Thus, effective and economical methods are required to evaluate user experience. Heuristic evaluation is an effective method to identify major usability problems and highlight issues faced by users. Heuristic evaluation was adapted to identify the usability of a CT scan on Saudi Arabian users and to identify if operating the CT scan can lead to physical and mental load effort. Subsequently, an in-depth investigation was conducted to identify major contributing factors impacting operational usability of the CT scan
Angles, Joseph Nicholas. "Usability of Fall Arrest Harnesses." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23089.
Full text18 local roofers were recruited to test three different harnesses, while performing both quiet calibration-oriented trials and simulated roofing tasks. Significant correlations between discomfort ratings and pressure values were found only in quiet trials. Questionnaire responses were validated by inter-correlations and by significant correlations with discomfort ratings. Multiple comparisons of objective fit values and questionnaire responses revealed deficits in the low-end harness, while suggesting few differences between the mid- and high-range harnesses.
Results from analysis of both objective and subjective measures were considered alongside free-response prompts to develop a set of four requirements for consideration in future harness design, including a lowered harness weight, an intermediate level of padding, inclusion of rolling style vertical strap quick-adjusters, a belt-style thigh strap adjustment mechanism, and the adoption of a three-sized sizing scheme.
Master of Science
Hogenkamp, Peter. "Web-Usability : Modellentwicklung, Operationalisierung, Überprüfung /." Table on contents, 2008. http://aleph.unisg.ch/hsgscan/hm00231780.pdf.
Full textAdikari, Sisira. "Usability modelling for requirements engineering /." Canberra, 2008. http://erl.canberra.edu.au/public/adt-AUC20081204.145827/index.html.
Full textDillon, Andrew. "The Evaluation of software usability." London: Taylor and Francis, 2001. http://hdl.handle.net/10150/105344.
Full textArslan, Bercis, and Blenda Fröjdh. "E-wallet - designed for usability." Thesis, KTH, Kommunikationssystem, CoS, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252790.
Full textI och med att användning av mobila betalningslösningar (appar) och elektroniskaplånböcker (e-plånböcker) ökar, ökar även efterfrågan på en förbättradanvändarupplevelse vid interaktion med dessa appar. Området människadatorinteraktion(MDI) fokuserar på design, utvärdering och implementeringav interaktiva datorsystem för mänsklig användning. En aspekt av MDI äranvändbarhet, dvs kvaliteten på interaktionerna med en produkt eller ett system.Detta kandidatexamensarbete undersöker hur en e-plånbok kan utformas föratt ge en hög användbarhet genom att anpassas till MDI praxis och formativutvärdering av designen med hjälp av en uppsättning utvärderingsmetoder föranvändbarhet. Forskningsprocessen bestod av en litteraturstudie och utveckling av en prototoyp,som utvärderades iterativt genom Thinking-aloud Protocol (TAP) samt enkombination av prestationsmätningar och frågeformulär av en vald testgrupp.Efter varje iteration förbättrades resultaten av prestationsmätningarna, såvälsom för den verbala datan. Den mest komplexa eller svåra uppgiften,för testpersonerna att utföra, var, enligt resultaten, Betalning via manuelinmatning. Alla mål uppnåddes för alla uppgifter förutom prestationsmålet fören procentandel av fel under 5%. Avslutningsvis var det tydligt att testpersonerna fann det svårare att förståkonceptet av e-plånboken än att navigera och slutföra uppgifterna. Svårigheternalåg i att förstå hur valutor lagrades och hur transaktioner gick till. När viutvecklade den här e-plånboken märkte vi att den viktigaste uppgiften var att göranya funktioner och koncept förståerliga för användaren genom att koppla dem tilligenkännliga idéer.
Guldager, Nikolai. "Usability evaluation of Beebyte’s website." Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74203.
Full textBlanchard, Enka. "Usability : low tech, high security." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCC005/document.
Full textThis dissertation deals with the field of usable security, particularly in the contexts of online authentication and verifiable voting systems.The ever-expanding role of online accounts in our lives, from social networks to banking or online voting, has led to some initially counterproductive solutions. As recent research has shown, the problem is not just technical but has a very real psychosocial component. Password-based authentication, the subject of most of this thesis, is intrinsically linked to the unconscious mechanisms people use when interacting with security systems. Everyday, users face trade-offs between protecting their security and spending valuable mental resources, with a choice made harder by conflicting recommendations, a lack of standards, and the ad-hoc constraints still frequently encountered. Moreover, as recent results from usable security are often ignored, the problem might stem from a fundamental disconnect between the users, the developers and the researchers. We try to address those problems with solutions that are not only simplified for the user's sake but also for the developer's. To this end, we use tools from cryptography and psychology, and report on seven usability experiments.The first part of the contributions uses a service provider's point of view, with two tools to improve the end-user's experience without requiring their cooperation. We start by analysing how easily codes of different structures can be transcribed, with a proposal that reduces error rates while increasing speed. We then look at how servers can accept typos in passwords without changing the general hashing protocol, and how this could improve security. The second part focuses on end-users, starting by a proposed mental password manager that only depends on remembering only a single passphrase and PIN, with guarantees on the mutual security of generated passwords if some get stolen. We also provide a better way to create such passphrases. As mental computing models are central to expanding this field, we finish by empirically showing why the main model used today is not adapted to the purpose.In the third part, we focus on voting protocols, and investigate why changing the ones used in practice is an uphill battle. We try to answer a demand for simple paper-based systems by providing low-tech versions of the first paper-based verifiable voting scheme. To conclude, we propose a set of low-tech primitives combined in a protocol that allows usable verifiable voting with no electronic means in small elections
Burghardt, Manuel [Verfasser], and Christian [Akademischer Betreuer] Wolff. "Engineering annotation usability - Toward usability patterns for linguistic annotation tools / Manuel Burghardt. Betreuer: Christian Wolff." Regensburg : Universitätsbibliothek Regensburg, 2014. http://d-nb.info/1059004674/34.
Full textJohansson, Sara, and Inka Frolov. "An Adaptable Usability Checklist for MOOCs : A usability evaluation instrument for Massive Open Online Courses." Thesis, Umeå universitet, Institutionen för informatik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-90330.
Full textXu, Henrik. "Tablet application GUI usability checklist : Creation of a user interface usability checklist for tablet applications." Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-19168.
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