123 research outputs found
Automatic identification of gait events using an instrumented sock
No full textAbstract Background Textile-based transducers are an emerging technology in which piezo-resistive properties of materials are used to measure an applied strain. By incorporating these sensors into a sock, this technology offers the potential to detect critical events during the stance phase of the gait cycle. This could prove useful in several applications, such as functional electrical stimulation (FES) systems to assist gait. Methods We investigated the output of a knitted resistive strain sensor during walking and sought to determine the degree of similarity between the sensor output and the ankle angle in the sagittal plane. In addition, we investigated whether it would be possible to predict three key gait events, heel strike, heel lift and toe off, with a relatively straight-forward algorithm. This worked by predicting gait events to occur at fixed time offsets from specific peaks in the sensor signal. Results Our results showed that, for all subjects, the sensor output exhibited the same general characteristics as the ankle joint angle. However, there were large between-subjects differences in the degree of similarity between the two curves. Despite this variability, it was possible to accurately predict gait events using a simple algorithm. This algorithm displayed high levels of trial-to-trial repeatability. Conclusions This study demonstrates the potential of using textile-based transducers in future devices that provide active gait assistance.</p
Athabasca Hockey Team
No full textPhotograph - A team photo of players in uniform. Left to right: Charlie Conquest (coach), Vince Preece, Ken McLeod, Tony Schinkinger, Bruce Best, Eugene Bissell, Bob Preece, Dennis Cocke, George Bergeron, Ronnie Brade
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Interaction Design: Beyond Human-Computer Interaction
No full textAccomplished authors, Preece, Rogers and Sharp, have written a key new textbook on this core subject area. Interaction Design deals with a broad scope of issues, topics and paradigms that has traditionally been the scope of Human-Computer Interaction (HCI) and Interaction Design (ID). The book covers psychological and social aspects of users, interaction styles, user requirements, design approaches, usability and evaluation, traditional and future interface paradigms and the role of theory in informing design. The topics will be grounded in the design process and the aim is to present relevant issues in an integrated and coherent way, rather than assembling a collection of chapters on individual HCI topics.KEY FEATURES: This truly integrated approach to HCI provides students with background information from psychology, sociology, anthropology, information systems and computer science provides principles and skills for designing any technology through the use of many interesting and state of the art examples. The author supported, highly interactive Web Site provides resources that allow students to collaborate on experiments, participate in design competitions, collaborate on design, find resources and communicate with others. The accompanying Web Site also features examples, step-by-step exercises and templates for questionnaires
Klondike Days Celebration - 15
No full textPhotograph - Actors in costume on a stage, Athabasca, Alberta. Left to right: Ricky Noel, Vince Preece, Don Stephenson, Charlie Tymchuk and Frank Falconer (seated
Klondike Days Celebration - 08
No full textPhotograph - Actors on stage at the Klondike Days celebration, Athabasca, AlbertaTymchuk, Zinnia; Grainger, Terry; Parker, Lois; Preece, Vera; Jorgenson, Inga; Corness, Dennis; Lewis, Vern; Parker, Charles; Garton, Bo
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