Global optimization approach for the H2-norm model reduction problem

A branch and bound algorithm is proposed to solve the H2-norm model reduction problem for continuous-time linear systems, with conditions assuring convergence to the global optimum in finite time. The lower and upper bounds used in the optimization procedure are obtained through Linear Matrix Inequalities formulations. Examples illustrate the results.

A study of the relative velocities of small particles that are orbiting the earth

The evolution of the velocity of the particles with respect to the circular orbits of satellites that are around the Earth that the particles will cross, suggests a range of possible velocities of impact as a function of the altitude of the satellite. A study made from those results show that the maximum relative velocities occur at the semi-latus rectum, independent of the initial semi-major axis of the particle. Considering both the solar radiation pressure and the oblateness of the Earth, it is visible that a precession in the orbit occurs and there is also a variation in the eccentricity of the particle as a function of its orbital region and its size. This is important information, because the damage caused in a spacecraft depends on the impact velocity.

Sustainable development 20 years on from the earth summit: progress, gaps and strategic guidelines for Latin America and the Caribbean. Summary

Includes bibliography

e-Health in Latin America and the Caribbean: progress and challenges

Includes bibliography

Economic efficiency of free and open source software in the public sector: the example of Chile

Includes bibliography

FTMOntology: An ontology to fill the semantic gap between music, mood, personality, and human physiology

This paper presents a domain ontology, the FeelingTheMusic Ontology - FTMOntology. FTMOntology is designed to represent the complex domain of music and how it relates to other domains like mood, personality and physiology. This includes representing the main concepts and relations of music domain with each of the above-mentioned domains. The concepts and relations between music, mood, personality and physiology. The main contribution of this work is to model and relate these different domains in a consistent ontology. © 2011 Springer-Verlag.

Latin America and the Caribbean. International migration and the global market: background to the decent work agenda

Includes bibliography

How to plan, AFROSIBER: the nine point method and its application to development planning

Includes bibliography

Global development plan, 1980-1982: synopsis

Includes bibliography

Mexico: the plan and the current situation

Includes bibliography

The quality gap in Chile's education system

Includes bibliography

Medium-term plan for the period 1976-1979 = Plan de mediano plazo para el período 1976-1979

Incluye Bibliografía

Proyecto de plan de mediano plazo para el período 1984-1989 = Draft medium-term plan for the period 1984-1989

Incluye Bibliografía

Estrategia Internacional del Desarrollo: programa de acción de la Asamblea General para el Segundo Decenio de las Naciones Unidas para el Desarrollo = International Development Strategy: action programme of the General Assembly for the Second United Nations Development Decade

Incluye Bibliografía