Copyright © 2003, American Association for Artificial Intelligence. All rights reserved. 0738-4602-2003 / $2.00 In the span of a few months, the AI community lost four important figures. The fall of 2002 marked the passing of Ray Reiter, for whom a memorial article by Jack Minker appears in this issue. As the issue was going to press, AI lost Saul Amarel, Norm Nielsen, and Charles Rosen. This s...

1 Hill D, Feldt R, Porter C, Puga F, Danielson G, Perrault J. Protein-losing enteropathy after Fontan operation: a preliminary report. Circulation 1989;80(suppl II):490. 2 Rothman A, Snyder J. Protein-losing enteropathy following the Fontan operation: resolution with prednisone therapy. Am HeartJ 1991;121:618-619. 3 Rychick J, Piccoli DA, Barber G. Usefulness of corticosteroid therapy for prote...

Aunque conocemos la historia de Caperucita Roja a través versiones literarias (principalmente las Perrault y los hermanos Grimm), fortuna este cuento sobre otros concurrencia en él numerosos mitemas permite emparentarlo con el mito tanto que explicación no racional alguna cuestión concerniente existencia humana. La ficción contemporánea ofrece numerosas revisiones historia. El microrrelato leng...

Perrault[2] has presented a formal framework describing communicative action and the change of mental state of agents participating in the performance of speech acts. This approach, using an axiomatization in default logic, su ers from several drawbacks dealing with the persistence of beliefs and ignorance over time. We provide an example which illustrates these drawbacks and then present a sec...