clarke@utcsri.UUCP (Jim Clarke) (03/12/86)
(SF = Sandford Fleming Building, 10 King's College Road) (GB = Galbraith Building, 35 St. George Street) COLLOQUIUM, Tuesday, March 18, 11 am, SF 1105 Dr. N. Meyerowitz Brown University, Rhode Island "Networks of Scholars' Workstations" A.I. SEMINAR, Thurs. Mar. 20, 3 pm, SF1101 Dr. Ernest Chang Alberta Research Council "Participant Systems" NUMERICAL ANALYSIS SEMINAR, Fri. Mar. 21, 2 pm, GB 248 Professor R.S. Varga Kent State University "Scientific Computations on some Mathematical Conjectures" ABSTRACTS Professor R.S. Varga Scientific Computations on some Mathematical Conjectures This talk will show how some recent computational work has shed new light on the following unsolved mathematical conjectures: 1) Bernstein's conjecture in approximation theory; 2) Polya conjecture (related to the Riemann Zeta hypothesis); 3) conjectures with respect to global descent methods for determining zeros of polynomials; 4) one-ninth conjecture in rational approximation. Dr. Ernest Chang Participant Systems A Participant System is a distributed computer system that facilitates the simultaneous interaction of several persons working together, possibly over several physical locations, on a shared complex task. To do so, it must support communications, multiple views, and common data, action and cognitive space. Such a system must coordinate access to a common problem representation, and contain sufficient knowledge and exper- tise in the problem domain to integrate the activities of the users, and even to participate as one of the experts. This represents a new paradigm for computing, a departure from the traditional one-person-to-one virtual machine mode, to one that more directly reflects the nature of human prob- lem solving in the group situation. Participant Systems differ from computer conferencing systems in several ways. They are real time, rather than asyunchronous. They deal with the solution of specific tasks, rather than the communication of text-based messages; they are therefore knowledge based, in contrast to computer conference systems, which are communications oriented but have no specific semantic knowledge of what is being discussed. -- Jim Clarke -- Dept. of Computer Science, Univ. of Toronto, Canada M5S 1A4 (416) 978-4058 {allegra,cornell,decvax,ihnp4,linus,utzoo}!utcsri!clarke