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"La región del Alto Golfo de California (AGC) posee gran interés biológico, geológico, químico y físico debido a sus características endémicas, que han sido fuertemente modificadas por actividades humanas en el último siglo. El conocimiento del transporte de sedimentos en…

The aim of this work is to relate two apparently independent concepts as belief revision and relevance. We propose a formal characterization for the notion of (ir)relevance by means of a set of postulates. Then we define (ir)relevance using change…

Effective document retrieval using domain knowledge and semantics is one of the major challenges in Information Retrieval. Over the last years, there has been a growing interest in ontologies as an artifact for human knowledge representation and a critical component…

by Shawn W. Ritchie., Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 1999., Includes bibliographical references (leaves 80-81).

by Roberta M. Braum., Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999., Includes bibliographical references (p. 57).

by Gloria G. Moncayo., Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management, 1999., Includes bibliographical references (leaves 87-88).

by Leslie Prince Rudolph., Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999., Includes bibliographical references (leaves 70-72).

by Qi Dong., Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999., Includes bibliographical references (p. 169-171).

by Gregory K. Clancey., Thesis (Ph.D.)--Massachusetts Institute of Technology, Program in Science, Technology and Society, 1999., Includes bibliographical references.