Optimizing Human Performance in Mobile Text Entry

Although text entry on mobile phones is abundant, research strives to achieve desktop typing performance "on the go". But how can researchers evaluate new and existing mobile text entry techniques? How can they ensure that evaluations are conducted in a consistent manner that facilitates comparison? What forms of input are possible on a mobile device? Do the audio and haptic feedback options with most touchscreen keyboards affect performance? What influences users' preference for one feedback or another? Can rearranging the characters and keys of a keyboard improve performance? This dissertation answers these questions and more. The developed TEMA software allows researchers to evaluate mobile text entry methods in an easy, detailed, and consistent manner. Many in academia and industry have adopted it. TEMA was used to evaluate a typical QWERTY keyboard with multiple options for audio and haptic feedback. Though feedback did not have a significant effect on performance, a survey revealed that users' choice of feedback is influenced by social and technical factors. Another study using TEMA showed that novice users entered text faster using a tapping technique than with a gesture or handwriting technique. This motivated rearranging the keys and characters to create a new keyboard, MIME, that would provide better performance for expert users. Data on character frequency and key selection times were gathered and used to design MIME. A longitudinal user study using TEMA revealed an entry speed of 17 wpm and a total error rate of 1.7% for MIME, compared to 23 wpm and 5.2% for QWERTY. Although MIME's entry speed did not surpass QWERTY's during the study, it is projected to do so after twelve hours of practice. MIME's error rate was consistently low and significantly lower than QWERTY's. In addition, participants found MIME more comfortable to use, with some reporting hand soreness after using QWERTY for extended periods

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994.

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994.

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994.

Annual Report Of Research and Creative Productions by Faculty and Staff from January to December, 1994

Tongues Tide: Translingual Directions for Technologically-Mediated Composing Platforms

This dissertation examines the link between classroom practices, language policies, and writing technologies in a translingual framework. Specifically, in the context of higher education, I explore the ways in which English-only policies dominate the academy and discourage linguistic diversity and inclusivity. This monolingual approach is emulated by composing software like MS Word and Google Docs, which surveil and constrain the languages and discourses available to student writers. These programs take a Current-Traditionalist approach to writing that is characterized by preoccupation with error and the positioning of the teacher as disciplinarian. In doing so, they inhibit translingual teaching and learning. Drawing upon the results of my ethnographic study on the composing processes of students in ENGL 109: Introduction to Academic Writing (a course taught at the University of Waterloo), I offer suggestions for improving the design of these technologically-mediated composing platforms to better accommodate translingual users