Adding multiscale capabilities to collaborative virtual environments can potentially help people work on very large electronic worlds. Our experiment shows that user performance o...
Two experiments investigated the effects of system response time (SRT) on hypertext navigation. Dependent variables were residence time, emotional strain and memory performance. A...
This paper describes some recent experiments that assess user behavior in a multi-modal environment in which actions can be performed with equivalent effect in speech, keyboard or...
Information Technology system administrators (sysadmins) perform the crucial and never-ending work of maintaining the technical infrastructure on which our society depends. Comput...
This paper describe the new concepts of collaborative systems metrics validation. The paper define the quality characteristics of collaborative systems. There are proposed a metri...