An important problem in number theory is to study the distribution of the non-trivial zeros of the Riemann zeta-function which, if one is willing to assume the Riemann Hypothesis, all lie on a vertical line. It is relatively easy to count how many of these zeros lie in a large interval, so the average spacing between consecutive zeros is easy to compute. However, it is a difficult and interesti...

In this talk I will agree with Harry Potter that one should "never trust anything that can think for itself, if you can't see where it keeps its brain". I’ll argue that humans need to locate intelligence, and that this issue poses problems for the disappearing computer. Bodies are the best possible example of located intelligence, of course, and interacting with another person is best done when...

The Internet is one of the major information sources for trip planning. However, sometimes it can be difficult to use, especially for planning a trip to a novel destination with a different culture. Using mixed methods which are comprised of process tracing, think aloud protocol, and clickstream analysis, this research explores the usability problems and barriers when American college students'...

Emerging technologies for children often require the involvement of children as test subjects in software development projects. Previous research studies have indicated that children behave differently than adults when involved in usability test sessions. Thus, children impose new opportunities and limitations in the evaluation and we still need to investigate proper and fruitful ways of involv...

projects are encouraged to express freely their professional judgment. This paper, therefore, does not necessarily represent the positions or the policies of the Canadian government, and no official Almost every scholarly or scientific discipline is, in part, defined by the activities, including the methods and instruments, which systematically advance the teaching, research, and practice withi...

Some theorists argue that the node-link design of the Web mimics human information storage and that Web use encourages individuals to process information efficiently and effectively, potentially increasing meaningful learning. However, critics claim that Web navigation increases cognitive load and often produces disorientation. This reduces the processing devoted to meaningful learning, and, th...

We report an experiment which seeks to determine how novice users’ conceptual understanding of graphs differs depending on the nature of the interaction with them. Undergraduate psychology students were asked to interpret three-variable “interaction” data in either bar or line graph form and were required to either think aloud while doing so or to produce written interpretations. Analysis of th...