Proposal on indicators for follow-up to the goals of the International Conference on Population and Development in Latin America and the Caribbean

Includes bibliography

Commemoration of the tenth anniversary of the International Conference on Population and Development: actions undertaken to implement the programme of action of the conference in Latin America and the Caribbean

Includes bibliography

Labeling methods for association rule clustering

Although association mining has been highlighted in the last years, the huge number of rules that are generated hamper its use. To overcome this problem, many post-processing approaches were suggested, such as clustering, which organizes the rules in groups that contain, somehow, similar knowledge. Nevertheless, clustering can aid the user only if good descriptors be associated with each group. This is a relevant issue, since the labels will provide to the user a view of the topics to be explored, helping to guide its search. This is interesting, for example, when the user doesn't have, a priori, an idea where to start. Thus, the analysis of different labeling methods for association rule clustering is important. Considering the exposed arguments, this paper analyzes some labeling methods through two measures that are proposed. One of them, Precision, measures how much the methods can find labels that represent as accurately as possible the rules contained in its group and Repetition Frequency determines how the labels are distributed along the clusters. As a result, it was possible to identify the methods and the domain organizations with the best performances that can be applied in clusters of association rules.

Evaluating serial ZigBee devices for application in wireless networked control systems

Networked control systems (NCS) are distributed control system where the sensors, actuators and controllers are physically separated and connected through communication networks. NCS represent the evolution of networked control architectures providing greater modularity and control decentralization, ease maintenance and diagnosis and lower cost of implementation. A recent trend in this research topic is the development of NCS using wireless networks (WNCS) enabling interoperability between existing wired and wireless systems. This paper evaluates a serial RS-232 ZigBee device as a wireless sensor link in NCS. In order to support this investigation, relevant performance metrics for wireless control applications such as jitter, time delay and messages lost are highlighted and calculated to evaluate the device capabilities. In addition the control performance of an implemented motor control system using the device is analyzed. Experimental results led to the conclusion that serial RS-232 ZigBee devices can be used to implement WNCS and the use of this device delay information in the PID controller discretization can improve the control performance of the system. © 2012 IEEE.

América Latina y la Conferencia Mundial de Población = Latin America and the World Population Conference

Incluye Bibliografía

Latin American Economic Conference

Presenta la "Declaracion de Quito" y el "Plan de Accion" de la Conferencia Economica Latinoamericana (Quito, 9 al 13 de enero de 1984), que proponen una accion concertada para enfrentar la crisis y la adopcion de diversas medidas para reactivar la economia y enfrentar la deuda externa en los paises de America Latina y el Caribe.

Informe de la Reunión Regional Latinoamericana Preparatoria de la Conferencia Internacional sobre Población, realizada en el marco del Séptimo Período de Sesiones del Comité de Expertos Gubernamentales de Alto Nivel = Report of the Latin American Regional Preparatory Meeting for the International Conference on Population, held within the Seventh Session of the Committee of High-Level Government Experts

Incluye Bibliografía