“Por un futuro sustentable y una gestión democrática de la energía”: la experiencia de construir un sistema de generación alternativa en la ciudad de Armstrong, Argentina

El desarrollo de energías renovables no convencionales es un tema de agenda pública central en diferentes países de América Latina desde hace dos décadas. Esta relevancia se puede explicar por una multiplicidad de causas, entre las cuales destaca un contexto de crisis energética que experimentaron varios países de la región y que tuvieron como elemento común y principal la escasa diversificación de sus matrices energéticas.En este contexto, el Estado argentino impulsó leyes y políticas públicas para favorecer el desarrollo de las energías renovables buscando modificar la situación fósil-dependiente de la matriz energética nacional, pero con pobres resultados. Problemas similares afectaron a las iniciativas orientadas a desarrollar sistemas de generación distribuida, aunque en los últimos años surgieron algunas experiencias que proponen un modelo alternativo al que se venía implementando.El objetivo de este trabajo es analizar el desarrollo de una experiencia de generación distribuida implementada en la provincia de Santa Fe como un modelo alternativo de aplicación de este tipo de sistemas. Para ello se propone responder las siguientes preguntas: ¿Cómo las racionalidades cooperativas pueden operar en el desarrollo de dinámicas de innovación inclusiva? ¿Es posible desarrollar modelos de electrificación que superen la concepción de la energía como un bien de mercado

Phase Magnitude Diagram for Linear Systems With Delay

[Abstract] Transfer functions can be viewed as complex functions where the magnitude and the phase of a system depend on complex numbers. In our previous work, we have developed a graphical tool where transfer functions are represented in a four-dimensional space. The magnitude is represented in decibels in the third dimension and a color code is applied to represent the phase in a fourth dimension. Level curves are used to compare points with the same magnitude or phase. This tool, which is called Phase Magnitude diagram, makes it more intuitive to understand complex functions. This representation allows the user to visually obtain the phase and the gain that have to be added to a system to meet some design specifications. After that, any control approach can be employed. The application to systems with delay is discussed in this paper. It is demonstrated that the Phase Magnitude diagram can be efficiently applied to design an ideal PD controller for a system with delay. In addition, it is deduced that this instrument is not limited to this class of system.https://doi.org/10.17979/spudc.978849749808

Introductory Note

The dossier presented in this issue of Interlitteraria analyzes the complex relation between literary and artistic practices, and the situations of censorship and political repression suffered, opposed or responded to, in Lusophone and Hispanophone contexts during the 20th and 21st centuries. Even if many of the case studies deal with Iberian and Ibero-American dictatorships, with this special issue we want to reflect on the concepts of “repression” and “censorship” beyond the scope of authoritarian regimes, for these are processes that manifest themselves in different forms and also in apparently or superficially democratic scenarios. In fact, Iberian and Latin American contexts offer good examples of the persistence of patterns of rejection, repression and censorship in recent times, as well as of the range and potentialities of artistic and creative responses to these patterns. In both cases, we find models and manifestations of “direct violence”, but also more complex and concealed articulations leading to more subtle, and sometimes more dangerous ways, of censorship. From that viewpoint, this special issue discusses topics such as the individual construction of memories of political violence; the reflection of the artists’ own role in a context of repression, or the possibilities of artistic creation as self-affirmation against censorship.info:eu-repo/semantics/publishedVersio

The behavior of parents in municipals sports schools of Sevilla

El objetivo principal de este trabajo es conocer el interés que muestran los padres en las Escuelas Deportivas Municipales donde participan sus hijos, analizando su implicación tanto en los entrenamientos como en las competiciones deportivas. Los participantes que formaron parte del estudio fueron 357 padres y madres, 448 niños/as y 36 técnicos deportivos de 45 Escuelas Deportivas Municipales de la ciudad de Sevilla. Las modalidades deportivas estudiadas fueron el fútbol sala, fútbol 7, baloncesto, voleibol, balonmano, bádminton y tenis. La metodología se llevó a cabo a través de tres cuestionarios diferentes, los cuales estaban conformados por diferentes bloques de dimensiones, entre las que se encuentran la relación del padre con el técnico de su hijo, el nivel de satisfacción con el trabajo del técnico y la actuación del padre en el partido, entre otras. Los análisis llevados a cabo relacionaban los datos de los diferentes cuestionarios respondidos por padres, técnicos y niños de las Escuelas Deportivas Municipales, a través de una triangulación estadística. Tras el análisis de los resultados se pudo observar que la implicación de dichos padres es baja aunque asimismo depende en gran medida del deporte en el que participen, tal como revelan las diferencias encontradas en cuanto a distritos y modalidades deportivas.The aim of this study was to determine the interest shown by parents in the Municipal Sports Schools where children are involved, analyzing their involvement both in training and in competitions. Participants who took part in the study were 357 parents, 448 children and 36 technicians from 45 sports Municipal Sports Schools Seville. Several types of sports were studied: indoor soccer, soccer 7, basketball, volleyball, handball, badminton and tennis. The methodology was carried out through three different questionnaires, which were composed of different blocks of dimensions, among which we can find the father's relationship with the coach of your child, the level of satisfaction with the technical work and actions of the father in the party. The analysis carried out related data from different questionnaires answered by parents and children at Municipal Sports Schools, through a statistical triangulation. After analyzing the results, it was observed that the involvement of parents is low, although these also depend largely on the sport in which they participate, as it is revealed by the differences found in terms of districts and sport

Technologies for social inclusion and sustainable development dynamics: socio-technical analysis of local development experiences based on renewable energy use

Este trabajo tiene como objetivo principal analizar, desde una perspectiva socio-técnica, un conjunto de iniciativas, proyectos y políticas orientadas al aprovechamiento de energías renovables en la Argentina, prestando atención particular a las acciones desarrolladas con el fin de promover dinámicas de desarrollo local sustentable e inclusión social. En los últimos años en Argentina, se están implementando diversas experiencias y proyectos de este tipo. Sin embargo, la mayoría de estas experiencias, proyectos y políticas se manifiestan en última instancia como paliativos, ya que proveen simplemente el recurso energético, ofreciendo una solución puntual a un problema complejo. De este modo, no se contemplan las necesidades energéticas vinculadas a actividades productivas o estrategias de desarrollo local. Para esto se presentan, en primer lugar, un conjunto de herramientas analíticas que permitirán proceder a la desconstrucción y re-construcción de los problemas y las soluciones vinculadas al desarrollo e implementación de políticas y proyectos de investigación en el campo de las energías renovables. A continuación se presenta un resumen de la trayectoria socio-técnica de algunas ejemplos de este tipo de experiencias en Argentina, y, finalmente, se concluye con algunas observaciones acerca del proceso de co-construcción de tecnologías, problemas sociales, políticas públicas y dinámicas de desarrollo local.The aim of this paper is to analyze, from a socio-technical perspective, a set of initiatives, projects and policies oriented to harnessing renewable energy in Argentina, particularly, actions in order to promote sustainable local development dynamics and social inclusion. In recent years, several experiments and projects are being implemented in Argentina. However, most of these experiences, projects and policies ultimately manifest as a palliative, since only provide energy, offering a point solution to a complex problem. Thus, the energy needs linked to productive activities or local development strategies are not covered. This paper first presents a set of analytical tools that will proceed to the deconstruction and reconstruction of the problems and solutions related to the development and implementation of policies and research projects in the renewable energy field. Secondly, it presents a summary of the socio-technical trajectory of some examples of this type of experience in Argentina, and finally concludes with some remarks about the process of co-construction of technology, social problems, public policies and local development dynamics.Fil: Garrido, Santiago Manuel. Universidad Nacional de Quilmes. Departamento de Ciencias Sociales. Instituto de Estudios Sociales de la Ciencia y la Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Moreira, Ana Josefina. Universidad Nacional de Quilmes. Departamento de Ciencias Sociales. Instituto de Estudios Sociales de la Ciencia y la Tecnología; ArgentinaFil: Lalouf, Alberto. Universidad Nacional de Quilmes. Departamento de Ciencias Sociales. Instituto de Estudios Sociales de la Ciencia y la Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Comparative transcriptomics reveals key differences in the response to milk oligosaccharides of infant gut-associated bifidobacteria.

Breast milk enhances the predominance of Bifidobacterium species in the infant gut, probably due to its large concentration of human milk oligosaccharides (HMO). Here we screened infant-gut isolates of Bifidobacterium longum subsp. infantis and Bifidobacterium bifidum using individual HMO, and compared the global transcriptomes of representative isolates on major HMO by RNA-seq. While B. infantis displayed homogeneous HMO-utilization patterns, B. bifidum were more diverse and some strains did not use fucosyllactose (FL) or sialyllactose (SL). Transcriptomes of B. bifidum SC555 and B. infantis ATCC 15697 showed that utilization of pooled HMO is similar to neutral HMO, while transcriptomes for growth on FL were more similar to lactose than HMO in B. bifidum. Genes linked to HMO-utilization were upregulated by neutral HMO and SL, but not by FL in both species. In contrast, FL induced the expression of alternative gene clusters in B. infantis. Results also suggest that B. bifidum SC555 does not utilize fucose or sialic acid from HMO. Surprisingly, expression of orthologous genes differed between both bifidobacteria even when grown on identical substrates. This study highlights two major strategies found in Bifidobacterium species to process HMO, and presents detailed information on the close relationship between HMO and infant-gut bifidobacteria

ALO: An ultrasound system for localization and orientation based on angles

This is the author’s version of a work that was accepted for publication in Microelectronics Journal. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Microelectronics Journal, Vol 44, Issue 10, (October 2013). http://dx.doi.org/10.1016/j.mejo.2013.01.001This paper presents a low cost system based on ultrasound transducers to obtain the localization and orientation information of a mobile node, such as a robot, in a 2D indoor space. The system applies a new differential time of arrival (DTOA) technique with reduced computational cost, which is called ALO (angle localization and orientation). Instead of directly calculating its position, the system calculates the direction of arrival of the received ultrasonic signal and, through it, its position and orientation. A prototype of a robot has been built in order to show the validity of the method through experimental results