This paper describes the main aspects of Project Geosis. It is an ongoing three year project between the Brazilian oil company Petrobras and the Pontifical Catholic University of Rio de Janeiro, Brazil. Its main objective is to extract information from seismic data through the use of geometric and topological modeling, as well as scientific visualization.
Single-valued tubular surfaces are built from a 3D directrix curve. Given a point on the directrix curve and an angular direction, a point on the surface is obtained by a function that corresponds to the distance between these two points along the given direction. This work presents a new algorithm for intersecting and trimming single-valued tubular… (More)
Paper prepared for the DIME Workshop " Motivations and Incentives: creating and organizing knowledge in organisational contexts " , Lisboa, March 30-31 Abstract: Work within firms is in a sense always a cooperative venture thus involving a social dilemma. This paper addresses the following related questions: 1. How is the problem of aligning the motivations… (More)