En este artículo se revisan los estudios realizados sobre la influencia
que tienen los procesos erosivos sobre la vegetación. Fundamentalmente
se revisan las tendencias generales en la composición florística
de las comunidades vegetales sometidas a fuertes procesos erosivos,
así como…

This paper presents an overview of a theory of discourse structure, and discusses a model for assimilating text into a frame-based data structure. The model has been applied to the analysis of news articles. The theory assumes sentences contain links…

The use of concepts underlies the most basic cognitive processes. Consequently, psychologists have long been interested in understanding the behavioral and neural correlates of conceptual knowledge and its manipulation. This has led to a rich set of research results that…

Policies to avert the threat of dangerous climate change focus on stabilizing atmospheric carbon dioxide concentrations by drastically reducing anthropogenic emissions of carbon. Such reductions require limiting the use of fossil fuels-which supply the bulk of energy to economic activity,…

by Lori Faith Lamel., Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988., Bibliography: leaves 140-150.

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

Signature schemes are fundamental cryptographic primitives, useful as a stand-alone application, and as a building block in the design of secure protocols and other cryptographic objects. In this thesis, we study both the uses that signature schemes find in protocols,…

In this work we present an approach to model an action-oriented system controlled by BDI agents using a defeasible argumentation formalism to represent its knowledge. Here, our main concern will be modelling the software agents that drive the physical robots.

Chapter one is titled "Social Capital and Group Banking." Lending to the poor is costly due to high screening, monitoring, and enforcement costs. Group lending advocates believe individuals are able to select creditworthy peers, monitor the use of loan proceeds,…

(cont.) outlined. 2. Demonstration that computer systems can use the discovered relations among data items to help users search for relevant information, prioritize the data exchange between collaborating users, and visualize data in various ways. This investigation looks at how…