Despite recent progress in materials synthesis, there are few materials with narrow pore size distributions and well-defined pore structures in the size range of 100 - 500 A. Materials with pores of 100 - 500 A possess a potential combination…

The Internet is a powerful channel that presents new opportunities for touching
customers, enriching products and services with information, squeezing out costs
through process automation, and redesigning internal business processes through
enhanced communication and knowledge sharing. In…

If we are to understand human-level intelligence, we need to understand how meanings can be learned without explicit instruction. I take a step toward that understanding by focusing on the symbol-grounding problem, showing how symbols can emerge from a system…

his dissertation analyzes how local knowledge improves environmental decisions. The premise is that controlling pollution and addressing public health disparities are not problems that professionals alone can solve. Concerned lay publics, especially low-income populations and people of color that experience…

RESUMO: Apesar do grande volume de informações no Brasil sobre atributos dos solos e distribuição na paisagem, surgem vários problemas quando se procura usá-los para planejamento de uso da terra, em particular pequenas áreas como comunidades rurais. No bioma Cerrado,…

Gene expression arrays are a technology used to measure quantities of messenger ribonucleic acid (mRNA). Application of the technology involves a variety of physical processes beginning with the acquisition of mRNA samples and ending with the fluorescence imaging of a…

The family agriculture is an important segment in Brasilian, as on the social point of view, as on the gross value production from the national farming. In spite of its importance, however, it faces many problems as , decapitalization, access…

This thesis developed and applied tools to bridge the gap between available data and action for urban air quality management, focusing on strategies to reduce particle concentrations. One of the principal thesis contributions is a Bayesian method to exploit the…

by Kimberly G. Waters., Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002., Includes bibliographical references (p. 45-46).

Conversational interfaces have received much attention as a promising natural communication channel between humans and computers. A typical conversational interface consists of three major systems: speech understanding, dialog management and spoken language generation. In such a conversational interface, speech recognition…