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Copyright of Tiempos Modernos is the property of Tiempos Modernos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article explores how informal indigenous slave communication networks developed and were maintained in sixteenth-century Castile, as men and women served as witnesses or sources of information for those indigenous slaves initiating lawsuits to gain their freedom. Based on dozens of lawsuits in the section Justicia of the Archive of the Indies (Seville, Spain), I argue that the distinct oral communication channels formed by indigenous men and women living in different cities and towns of Castile constituted an important element of litigation suits, before, during and after a sentence was reached or the lawsuit ended. In the heart of the Spanish empire -Castile- slaves and freedmen and women inside and outside of the legal "courtroom" engaged with legal discourse about what it meant to be identified or to identify oneself as an indio (person of the Spanish Indies). [ABSTRACT FROM AUTHOR]

In the Chiapas of the second half of the twentieth century, tensions arising from economic, social and political inequalities led to a resurgence of indigenous claims for greater autonomy. One of the most common claims was the right to administrate the territories in which indigenous groups reside. The actors were organized in order to design political-territorial projects that were conceived thanks to the use or creation of communication or support networks. After a presentation of the diversity of the networks mobilized in recent processes of territorial reconstruction, real or desired, this contribution questions the generalization and expansion of the use of networks as a model of privileged action in the demands for greater autonomy. Likewise, it will reflect on the exacerbation of intra-community turmoil, born of competition between different networks pursuing the same objective, but inscribed in different political, social or religious frameworks. [ABSTRACT FROM AUTHOR]

Copyright of Ecos de Economía is the property of Universidad EAFIT and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of F@ro: Revista Teórica del Departamento de Ciencias de la Comunicación y de la Información is the property of Universidad de Playa Ancha de Ciencias de la Educacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The scientific production of periodicals that belong to the SciELO database in the area of Information Science specifically to the subject metric studies is evaluated in a two-years period. The existing trends in the scientific community, related to this thematic, have been analyzed in the following variables: specific subsubjects approached, institutions of origin, co-authors, more cited periodicals, native country and language, with the purpose of characterizing and subsidizing the current vision of research trends in this subject. The most frequent subjects are the scientific production and the questions connected to the evaluation of periodicals, evaluation of the scientific production through metric indicators, such as, impact factor and citation analysis, totalizing 48% of articles; followed by webometric, link, informetric, scientometric and bibliometric evaluations; and, finally, quantitative methods in general, these in minor percentage. The hotter questions in the subject, such as domain analysis and scientific communication nets, are seldom contemplated. The most productive institution is the Universidade de São Paulo, including its system of libraries (20%), followed by foreign universities from Spain, Mexico, United States, Uruguay, Belgium and France (17,77%), (demonstrating the international character of the SciELO base and the dissemination of the subject), and, later, the universities of the different States of Brazil with great dispersion. The analysis of others variables is still in progress. In conclusion, we point out the importance of the evaluations of scientific production for the visibility of the science, because it points the routes taken in the national and international scope, supplies a panorama of the most productive institutions and research groups inside this thematic, and provides a panoramic view of the Information Science area, that is having more and more relevance. We recommend extending the evaluation be extended to others themes, database or electronic libraries. [ABSTRACT FROM AUTHOR]

La presencia y la actividad virtual de las universidades públicas y privadas en el ciberespacio, vía sitios web de Internet, es cada vez más frecuente. Lo importante, sin embargo, no son los datos respecto de cuántos campi virtuales disponen, sino qué tipo de presencia tienen y tendrán en estos entornos y qué uso harán sus estudiantes y profesores de sus centros de servicio informático y de sus plataformas educativas. En la Universidad Autónoma Metropolitana Xochimilco se ha implementado, como fruto del modelo educativo basado en proyectos de investigación llamado sistema modular, un proceso educativo innovador, no lineal, de apropiación, construcción y socialización de los conocimientos mediante la estrategia de redes de educación virtual y a distancia, inicialmente en el campo de las Ciencias Biológicas y de la Salud. [ABSTRACT FROM AUTHOR]

This paper describes the development of a system for monitoring, control, and data acquisition of several process controllers from any computer with internet conecction by means of both different physical media (Ethernet, RS232 y RS485) and communication protocols (Modbus/TCP, Modbus, and ASCII protocols). Basic concepts about Modbus/TCP protocol are presented. This particular application solved a problem at the automatic control laboratory at Universidad del Valle. [ABSTRACT FROM AUTHOR]