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Submitted for publication; do not copy or cite without permission. ABSTRACT Among interactive system developers and users there is now much agreement that usability is an essential quality of software systems. The introduction of usability evaluation methods (UEMs) to assess and improve usability in such systems has led to a variety of alternative(More)
Much traditional user interface evaluation is conducted in usability laboratories, where a small number of selected users is directly observed by trained evaluators. However, as the network itself and the remote work setting have become intrinsic parts of usage patterns, evaluators often have limited access to representative users for usability evaluation(More)
A series of 3 studies was conducted to test free-modulus magnitude estimation as a measure of perceived presence in virtual environments (VEs) and to model the first- and second-order effects of 11 VE system parameters on perceived presence across 5 subtasks. Sequential experimentation techniques were used to build 4 empirical models using polynomial(More)
The term telesupport is broad and encompasses many different applications with the shared mission of relying on electronic means to deliver services that improve quality of life. However, telesupport systems lack empirical research and efficient methods for the development of user requirements and design guidelines. Remote assessment methods using focus(More)