Datascape: speculative city for data to inhabit

La creciente exponencial de datos está afectando profundamente el entorno físico, y su proliferación descontrolada continuará reconfigurando y alterando el paisaje. Sin embargo, estas afectaciones pueden no ser inmediatamente aparentes. Este proyecto tiene como objetivo explorar y representar visualmente el impacto de la producción masiva de datos en el paisaje físico, diseñando una ciudad especulativa para que los datos la habiten para ilustrar las posibles implicaciones de esta posibilidad en el futuro. El objetivo es estudiar el estado actual de la producción de datos, comprender sus efectos en el medio ambiente y crear una representación visual que resalte las posibles consecuencias del crecimiento de los datos. A través de la investigación, el análisis y el diseño, este proyecto pretende contribuir al discurso sobre las implicaciones ambientales de la producción de datos y ofrecer ideas sobre los posibles escenarios futuros que esperan a nuestro entorno construido. Se invita a realizar un examen crítico de nuestras prácticas digitales y se fomenta un enfoque responsable y sostenible en la producción y consumo de datos.The exponential rise in data is profoundly affecting the physical environment, and its uncontrolled proliferation will continue to reshape and alter the landscape. However, these impacts may not be immediately apparent. This project aims to explore and visually represent the impact of massive data production on the physical landscape by designing a speculative city for data to inhabit, illustrating the potential implications of this impact in the future. The objective is to study the current state of data production, understand its effects on the environment, and create a compelling visual representation that highlights the potential consequences of data growth. Through research, analysis, and design, this project aims to contribute to the discourse on the environmental implications of data production and offer insights into potential future scenarios that await our built environment. It calls for a critical examination of our digital practices and encourages responsible and sustainable approaches to data production and consumption

Chaos controller for switching regulators aiming enhanced design-space towards miniaturization

This paper tackles the control of fast-scale instabilities in a buck switching power converter aiming to expand its design-space towards miniaturization. After briefly revisiting the working principle of existing chaos controllers, the paper explores an alternative approach based on amplifying the harmonic at the switching frequency. Numerical simulations show that the proposed controller can concurrently improve both fast-scale and slow-scale stability margins. Finally, the paper proposes a chaos controller combined with an output ripple reduction network and studies their interaction with the aim of achieving both low-ripple and improved stability.Preprin

Recurso virtual que favorece el autoaprendizaje

Las verdaderas transformaciones en la educación comienzan en las aulas y los propios docentes deben ser generadores de estrategias que construyan el conocimiento en la mente del estudiante. Un profesor que opera con este criterio crea un ambiente centrado en el estudiante y le ayuda a construir el conocimiento basado en sus habilidades y sus propios saberes. Para optimizar el aprendizaje se diseñaron autoevaluaciones opcionales, que el alumno desarrolló en forma simultánea con el cursado de la asignatura, a través del Campus Virtual de la FRT de la UTN. El objetivo de este trabajo es mostrar los resultados de su implementación y sus efectos en el rendimiento académico. Este mejoró para los alumnos que optaron por las autoevaluaciones y proponemos la obligatoriedad de su práctica

Effect of mold temperature on the impact behavior and morphology of injection molded foams based on polypropylene polyethylene–octene copolymer blends

Producción CientíficaIn this work, an isotactic polypropylene (PP) and a polyethylene–octene copolymer (POE) have been blended and injection-molded, obtaining solids and foamed samples with a relative density of 0.76. Different mold temperature and injection temperature were used. The Izod impact strength was measured. For solids, higher mold temperature increased the impact resistance, whereas in foams, the opposite trend was observed. In order to understand the reasons of this behavior, the morphology of the elastomeric phase, the crystalline morphology and the cellular structure have been studied. The presence of the elastomer near the skin in the case of high mold temperature can explain the improvement produced with a high mold temperature in solids. For foams, aspects as the elastomer coarsening in the core of the sample or the presence of a thicker solid skin are the critical parameters that justify the improved behavior of the materials produced with a lower mold temperature.Ministerio de Economía, Industria y Competitividad (grant DI-15-07952

PAMP-triggered immunity against Pseudomonas syringae involves microRNA-mediated regulation of several uncharacterized R genes

Two main types of noncoding small RNA molecules have been found in plants: microRNAs (miRNAs) and small interfering RNAs (siRNAs). They differ in their biogenesis and mode of action, but share similar sizes (20-24 nt). Their precursors are processed by Dicer-Like RNase III (dcl) proteins present in Arabidopsis thaliana, and in their mature form can act as negative regulators of gene expression, being involved in a vast array of plant processes, including plant development, genomic integrity or response to stress. Small-RNA mediated regulation can occurs at transcriptional level (TGS) or at post-transcriptional level (PTGS). In recent years, the role of gene silencing in the regulation of expression of genes related to plant defence responses against bacterial pathogens is becoming clearer. Comparisons carried out in our lab between the expression profiles of different mutants affected in gene silencing, and plants challenged with Pseudomonas syringae pathovar tomato DC3000, led us to identify a set of uncharacterized R genes, belonging to the TIR-NBS-LRR gene family, differentially expressed in these conditions. Through the use of bioinformatics tools, we found a miRNA* of 22 nt putatively responsible for down-regulating expression of these R genes through the generation of siRNAs. We have also found that the corresponding pri-miRNA is down-regulated after PAMP-perception in a SA-dependent manner. We also demonstrate that plants with altered levels of miRNA* (knockdown lines or overexpression lines) exhibit altered PTI-associated phenotypes, suggesting a role for this miRNA* in this defence response against bacteria. In addition we identify one of the target genes as a negative regulator of defence response against Pseudomonas syringae.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. MINECO, FEDE

Técnicas de compresión e estruturas de indexación compactas para texto en linguaxe natural e contidos dixitais: aplicacións prácticas

[Resumo] A aplicación dos resultados da investigación ao desenvolvemento software permite crear sistemas innovadores que resolven problemas, organizan procesos ou ofrecen servizos á sociedade dun modo máis eficaz e eficiente. Na primeira parte desta tese preséntanse dúas novas técnicas da área de investigación en compresión e indexación de texto en linguaxe natural. Dunha banda, un autoíndice de palabras que permite obter unha representación comprimida do texto empregando tan só un 35–40% do seu tamaño orixinal, á vez que realizar buscas moi eficientes dentro del. Doutra banda, un compresor orientado a frases que permite reducir un texto até ocupar un 25–30% do seu tamaño orixinal, ofrecendo unha descompresión moi rápida e a posibilidade de realizar buscas eficientes no texto comprimido. Na segunda parte preséntanse distintas solucións tecnolóxicas que desenvolvemos e integramos en sistemas reais en produción para resolver diferentes aspectos relacionados co consumo de contidos dixitais, como a súa creación e distribución protexida, e como estas fan uso de diferentes resultados da investigación en compresión e indexación para mellorar a eficiencia no almacenamento, acceso, procesado e transmisión dos contidos de natureza textual.[Resumen] La aplicación de los resultados de la investigación al desarrollo software permite crear sistemas innovadores que resuelven problemas, organizan procesos o que ofrecen servicios a la sociedad de una forma más eficaz y eficiente. En la primera parte de esta tesis se presentan dos nuevas técnicas del área de investigación en compresión e indexación de texto en lenguaje natural. Por una parte, un autoíndice que permite obtener una representación comprimida del texto utilizando tan solo un 35–40% de su tamaño original, a la vez que realizar búsquedas muy eficientes dentro de él. Por otra parte, un compresor orientado a frases que permite reducir un texto hasta ocupar un 25–30% de su tamaño original, ofreciendo una descompresión muy rápida y la posibilidad de realizar búsquedas eficientes en el texto comprimido. En la segunda parte se presentan distintas soluciones tecnológicas que hemos desarrollado e integrado en sistemas reales en producción para resolver diferentes aspectos relacionados con el consumo de contenidos digitales, como su creación y distribución protegida, y cómo estas hacen uso de diferentes resultados de la investigación en compresión e indexación para mejorar la eficiencia en el almacenamiento, acceso, procesado y transmisión de los contenidos de naturaleza textual.[Abstract] The application of research results to software development allows creating innovative systems that solve problems, organize processes or provide services for the society in a more effective and efficient manner. In the first part of this thesis, we present two new techniques in the research area of compression and indexing of natural language texts. On the one hand, a self-index that obtains a compressed representation of the text using just 35–40% of its original size, while enabling very efficient searches. On the other hand, a phrasebased compressor that reduces the text to 25–30% of its original size, providing very fast decompression and the capability of performing efficient searches over the compressed text. In the second part, we present several technological solutions that we have developed and integrated into real production systems to solve various aspects related to the consumption of digital contents, such as their creation and protected distribution, and how they make use of different techniques that are product of the research in the field of compression and indexing to improve the efficiency of storing, accessing, processing and transmitting textual contents

Diseño y desarrollo de una guía para la implementación de un ambiente Big Data en la Universidad Católica de Colombia

Trabajo de InvestigaciónEl proyecto busco la implementación de una arquitectura para crear un ambiente Big Data en la Universidad Católica de Colombia, teniendo en cuenta aspectos importantes como el software y el hardware que se debía utilizar para realizar dicha labor, de igual manera todos los procedimientos que implicaba empezar a utilizar bases de datos no relacionales, con el propósito de diseñar estrategias y buscar patrones que permitan una buena gestión de la información.PregradoIngeniero de Sistema

Development and experimental evaluation of the control system of a hybrid fuel cell vehicle

This work presents the development and experimental evaluation of a Fuel Cell Hybrid Vehicle, focusing on the control system. The main objective of this paper is to present a real vehicle which has been designed in order to demonstrate the feasibility of the use of hydrogen as an energy source for automotive applications. The paper describes the components that are integrated in the vehicle and presents several experimental results obtained during normal operation. A control system is designed and tested in order to perform all the operations related to the coordinated operation of the fuel cell, the intermediate electrical storage and the power train. Its main task is to compute the power that must be demanded to the fuel cell in real time. This computation is done in order to satisfy the power demand of the electric motor taking into account the state of charge of the batteries and the operating regime of the fuel cell. This is accomplished by manipulating the electronic converter which regulate the current that the fuel cell supplies to the batteries.Ministerio de Ciencia y Tecnología DPI2007-66718-C04-0

Effector-mediated suppression of plant defense against biotrophs through activation of antagonistic defense against necrotrophs

Plant hormones are small molecules involved in the regulation of plant growth, development, reproduction and stress responses. Salicylic acid (SA) and jasmonates (JA) are essential for the activation of defence responses against pathogens. SA signaling is involved in triggering immunity against biotrophic pathogens while JA activates resistance against necrotrophic pathogens. The SA and JA pathways are mostly antagonistic: elevated biotroph resistance correlates with increased necrotroph susceptibility, and vice versa. Using transcriptomics to look for a functional overlap between plant gene silencing and type III-mediated plant responses we found that genes associated to JA signaling were overrepresented in the overlapping set, more so than SA-related genes. We present here the results of the ensuing analysis, showing effector-mediated activation of the JA pathway as a virulence mechanism, and establishing a novel role for gene silencing in the regulation of the JA pathway.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech - See more at: http://riuma.uma.es/xmlui/handle/10630/5393/submit/12176e8e39815b4d6112192a6815221718868c2f.continue#sthash.RYCQTkwy.dpu