Las auditorías, una metodología para planificar la preservación digital. Experiencias en España.

Se presentan los resultados obtenidos en la aplicación de diversas metodologías de auditoría para comprobar el estado de la preservación digital en distintas instituciones de España. Se concluye que las auditorías también se pueden usar como herramienta de ayuda a la planificación de sistemas de preservación digital.

Tractament digital de la imatge com a suport per a la recerca

La investigació actual necessita recórrer en nombroses ocasions a la imatge, i encara ho podria fer més. El registre d'imatges s'ha convertit avui en una feina senzilla i económica, almenys en relació amb la situació de fa vint anys. I des de fa amb prou feines un parell d'anys, el tractament de la imatge animada mitjançant tècniques digitals encara s'ha simplificat més, alhora que ha proporcionat nous canvis que permeten explorar la realitat.

CBS: an open platform that integrates predictive methods and epigenetics information to characterize conserved regulatory features in multiple Drosophila genomes.

Background: Information about the composition of regulatory regions is of great value for designing experiments to functionally characterize gene expression. The multiplicity of available applications to predict transcription factor binding sites in a particular locus contrasts with the substantial computational expertise that is demanded to manipulate them, which may constitute a potential barrier for the experimental community. Results: CBS (Conserved regulatory Binding Sites, http://compfly.bio.ub.es/CBS) is a public platform of evolutionarily conserved binding sites and enhancers predicted in multiple Drosophila genomes that is furnished with published chromatin signatures associated to transcriptionally active regions and other experimental sources of information. The rapid access to this novel body of knowledge through a user-friendly web interface enables non-expert users to identify the binding sequences available for any particular gene, transcription factor, or genome region. Conclusions: The CBS platform is a powerful resource that provides tools for data mining individual sequences and groups of co-expressed genes with epigenomics information to conduct regulatory screenings in Drosophila.

La bretxa digital: gènere i jocs d'ordinador

La finalitat d"aquest article és reflexionar sobre una pràctica concreta que s"ha revelat creadora de desigualtat social en l"era digital: els jocs d"ordinador des de la perspectiva del gènere. Per això, es fa una revisió de la literatura existent per mostrar com, malgrat les bondats educatives de l"activitat lúdica, l"ús educatiu dels jocs d"ordinador és mínim. A més, es detallen diverses investigacions que mostren el biaix de gènere en diferents aspectes relacionats amb els jocs multimèdia.

Digital Audio Broadcasting: Technology and Prospects

The subject of the thesis was the digital audio broadcasting technology developed in the Eureka project 147. The research was based on the literature on the subject. At first, some reasons for the digitisation of broadcasting technology were given. Next, the channel multiplexing and channel coding methods employed by digital radio were discussed. The design of these methods is based on certain phenomena related to the propagation of radio-frequency signals, and these phenomena were also described. After that, audio and data transfer mechanisms as well as the structure of digital radio network were explained. Furthermore, digital audio and data services were considered. Finally, the digital radio was examined from marketing and administrative aspects. From a merely technical point of view, the digital radio technology offers several improvements in comparison with analogue technology. However, the digital radio has not become as widespread as it was perhaps originally expected during its development.

Determinants of Broadband Access: Is Platform Competition always the Key Variable to Success?

Previous studies have identified the rivalry among technological platforms as one of the main driving forces of broadband services penetration. This paper draws on data from the Spanish market between 2005 and 2011 to estimate the main determinants of broadband prices. Controlling for broadband tariffs features and network variables, we examine the impact of the different modes of competition on prices. We find that inter-platform competition has no significant effects over prices, while intra-platform competition is a key driver of the prices charged in the broadband market. Our analysis suggests that the impact of different types of competition on prices is critically affected by the levels of development of the broadband market achieved by the considered country

Sucção digital: observação em ultra-sonografia e em recém-nascidos

OBJETIVO: Observar a sucção digital ou da mão em fetos, identificar os fatores relacionados à gravidez de importância para sua manifestação e identificar, após o nascimento do bebê, a permanência da sucção digital. MATERIAIS E MÉTODOS: Dois exames de ultra-sonografias fetais foram realizados em 55 gestantes, nos períodos de 20-24 e 25-32 semanas. Para avaliar os fatores relacionados à gravidez, foram utilizados questionários. Para identificar a permanência da sucção digital, visitas foram realizadas uma semana após o nascimento. RESULTADOS: A sucção digital foi detectada na maioria dos fetos, exceto em 20. Estatisticamente não houve diferenças significativas entre estado de saúde da gestante e o grau de aceitação da gravidez com a manifestação da sucção digital em fetos. O teste Q de Cochran não evidenciou diferenças significativas entre os sinais de sucção digital em fetos e a instalação do hábito em recém-nascidos. CONCLUSÃO: A ultra-sonografia é um método importante para a observação de sinais de sucção digital em fetos. Esses sinais não implicam hábito bucal após o nascimento.

Broadband prices in the European Union : competition and commercial strategies

This paper analyses the determinants of broadband Internet access prices in a group of 15 EU countries between 2008 and 2011. Using a rich panel dataset of broadband plans, we show the positive effect of downstream speed on prices, and report that cable and fibre-to-the-home technologies are available at lower prices per Mbps than x DSL technology. Operators’marketing strategies are also analysed as we show how much prices rise when the broadband service is offered in a bundle with voice telephony and/or television, and how much they fall when download volume caps are included. The most insightful results of this study are provided by a group of metrics that represent the situation of competition and entry patterns in the broadband market. We show that consumer segmentation positively affects prices. On the other hand, broadband prices are higher in countries where entrants make greater use of bitstream access and lower when they use more intensively direct access -local loop unbundling-. However, we do not find a significant effect of inter-platform competition on prices.

Choosing a platform for a billing system

Enterprises have a need in use of billing. Before actual choose of a billing system an appropriate platform has to be deployed. This work presents a study of a platform choosing for a billing system and shows the role of optimally chosen platform. In evaluation of a platform several criteria were considered: cost, scalability, reliability, safety, usability, portability and efficiency. In the thesis three different platforms MAC OS, Linux and MS Windows were studied. The results of the evaluation of each platform are shown and according to this results the most suitable platform for a billing system was chosen.

Mamografia digital: perspectiva atual e aplicações futuras

Na mamografia digital, os processos de aquisição da imagem, demonstração e armazenamento são separados, o que leva à otimização de cada uma dessas etapas. A radiação transmitida através da mama é absorvida por um detector eletrônico, em resposta fiel a uma ampla variedade de intensidades. Uma vez que esta informação é armazenada, ela pode ser demonstrada usando técnicas computadorizadas de imagem, permitindo variações de brilho e contraste e ampliação, sem a necessidade de exposições radiológicas adicionais para a paciente. Neste artigo, o estado atual da tecnologia em mamografia digital e dados sobre testes clínicos que dão suporte ao uso dessa tecnologia são revistos. Além disso, algumas aplicações potencialmente utilizáveis que estão sendo desenvolvidas com a mamografia digital são descritas.

La Transformación del periodismo tradicional en el nuevo entorno digital

Esta investigación se centra en comparar las diferencias existentes entre el periodismo tradicional y el periodismo ciudadano, tanto desde un punto de vista teórico como desde un punto de vista práctico, analizando la situación actual en la que el periodismo tradicional se está transformando a consecuencia del nuevo entorno digital. Proponemos descubrir el cambio provocado por Internet y las nuevas tecnologías en las formas y estructuras de la comunicación, reflexionar sobre la situación actual del periodismo tradicional y conocer las nueves posibilidades del periodismo ciudadano. La investigación consiste en un estudio de caso explorativo donde se hace una comparación entre The New York Times y The Huffington Post, que respectivamente representan las características del periodismo tradicional y ciudadano. Los resultados muestran que el periodismo tradicional se ha quedado atrás de sus rivales por sus ideas estereotipadas, falta de innovación e insuficiente oferta de interacción para sus lectores. De este modo, consideramos que el periodismo tradicional debe replantearse seriamente una transformación profunda para adaptarse a esta nueva situación.

Alfabetización digital y mediática y desarrollo comunitario. Estudio de caso del proyecto "Mi Centro TIC" de la Hedionda Grande (México)

La investigación de este trabajo va encaminada a describir el proceso de alfabetización digital y mediática e identificar los cambios generados en la comunidad La Hedionda Grande (México). El trabajo describe el proceso de alfabetización digital mediática de los habitantes de una comunidad rural. Se relatan actividades de formación y capacitación y la aplicación de sus conocimientos en el desarrollo comunitario. Encontramos en los resultados de la investigación cualitativa cuáles fueron los beneficios y debilidades que los habitantes identificaron, las propuestas que plantean para mejorar y los anhelos para continuar en un proceso de superación a través de las TIC.

La Privacidad en el escenario digital : análisis de la política de la Unión Europea para la protección de datos de la ciudadanía

El objeto de estudio de esta investigación es la privacidad digital, centrada en el marco legislativo del derecho de la protección de datos, que representa una de las consecuencias derivadas de la cultura emergente de la nueva esfera pública digital. Se estudia cómo este contexto tecnológico y digital, que caracteriza la Sociedad de la Información, ha provocado una serie de cambios de comportamiento y de los valores de la ciudadanía. Entre ellos la facilidad de recoger datos, ya sea por las metodologías de extracción de datos o por la publicación en abierto de contenido, es importante saber cuáles son los límites de la legalidad y los fines para los que son recogidos. Ya no se trata sólo de qué datos hay de una persona en el plano virtual, sino de qué tipo de privacidad existe y qué medidas se pueden adoptar tanto para preservarla como para reivindicarla. El estudio se enmarca el derecho de la protección de datos dentro de la política de la Unión Europea, examinando la regulación establecida vigente y los cambios que se pretenden realizar en un futuro próximo.

Prototype of a web-based participative decision support platform in natural hazards and risk management

This paper presents the current state and development of a prototype web-GIS (Geographic Information System) decision support platform intended for application in natural hazards and risk management, mainly for floods and landslides. This web platform uses open-source geospatial software and technologies, particularly the Boundless (formerly OpenGeo) framework and its client side software development kit (SDK). The main purpose of the platform is to assist the experts and stakeholders in the decision-making process for evaluation and selection of different risk management strategies through an interactive participation approach, integrating web-GIS interface with decision support tool based on a compromise programming approach. The access rights and functionality of the platform are varied depending on the roles and responsibilities of stakeholders in managing the risk. The application of the prototype platform is demonstrated based on an example case study site: Malborghetto Valbruna municipality of North-Eastern Italy where flash floods and landslides are frequent with major events having occurred in 2003. The preliminary feedback collected from the stakeholders in the region is discussed to understand the perspectives of stakeholders on the proposed prototype platform.