207 research outputs found
To rediscover their public value universities can learn from the free culture movement
No full textThe culture of acceleration and quantification that arguably defines contemporary academic research is closely related to the information society in which we live and the technologies that support it. In this post Dafne Calvo, argues that the democratic decentralised principles of the free culture movement provide a blueprint for how academics and academic institutions might create an alternative to the accelerated academy
Reseña/Review (Calvo, Dafne; Sánchez-Duarte, José Manuel y López-García, Guillermo, “Ciudadanía, Comunicación y Pandemia”, Universitat de València, ISBN: 978-84-1118-181-5, 211 págs., 2023)
Get PDFReseña/Review (Calvo, Dafne; Sánchez-Duarte, José Manuel y López-García, Guillermo, “Ciudadanía, Comunicación y Pandemia”, Universitat de València, ISBN: 978-84-1118-181-5, 211 págs., 2023)Reseña/Review (Calvo, Dafne; Sánchez-Duarte, José Manuel y López-García, Guillermo, “Ciudadanía, Comunicación y Pandemia”, Universitat de València, ISBN: 978-84-1118-181-5, 211 págs., 2023)Quando a pandemia atingiu em 2020 e nos obrigou a parar, todos puderam testemunhar a imposição de uma tendência que já estava ocorrendo - a mediação digital em todas as interações. A resposta necessária ao distanciamento físico acelerou a adoção de ferramentas tecnológicas e impulsionou uma mudança significativa no comportamento dos cidadãos em termos de interação e conexão. No entanto, também renovou debates anteriores sobre a justiça e a equidade das tecnologias, que ficam evidentes no livro aqui resenhado. Nesse sentido, a trajetória de pesquisa de seus editores garante uma perspectiva crítica na qual a iniciativa e resiliência dos cidadãos locais na Ibero-América terão destaque
FINUDA and Hypernuclei Production at DAFNE
No full textThe DAFNE project at the Laboratori Nazionali di Frascati (LNF) is an e+e- collider with electron and positron beams accelerated to 510 MeV by a Linac injector. DAFNE is designed to reach a top luminosity L 1033cm-2s-1, that is, to produce 4 × 103 F(1020)s-1. The hypernuclear research program at DAFNE relies on low-energy kaons, 16MeV, being produced by F-meson decays at rest: F K- K+ with a B.R.49%. In the initial stage, DAFNE will operate at a L 1032cm-2s-1, however the number of F produced, and the large geometrical acceptance of the FINUDA detector, 3sr, will allow a strong hypernuclear physics program to be pursued
Comunal, colaborativa y libre: enseñanzas de la cultura libre para la investigación social
Get PDFEl informacionalismo ha venido a designar un paradigma articulado por las nuevas capacidades técnicas para la producción y procesamiento de datos. Por su parte, el trabajo académico ha resultado permeable al desarrollo tecnológico y a las dinámicas de producción contemporáneas, instaladas dentro de una retórica neoliberal más extensa. Ello se ha traducido en críticas sobre la elitización de las universidades debida a la aceleración de los ritmos de trabajo y la reproducción de las desigualdades sociales. En este ensayo desarrollamos cuatro premisas que desde la cultura libre subvierten las dinámicas dominantes de la producción del conocimiento y, con ello, facilitan una interpretación política de las prácticas de investigación social. El uso de software libre, la disposición pública de los resultados de la investigación, la construcción colectiva del conocimiento, y la vocación a la transformación social proponen estrategias para reformular y debatir sobre el trabajo académico actual
The FINUDA experiment at DAFNE
No full textFINUDA is a large acceptance, high resolution magnetic spectrometer dedicated to hypernuclear physics. The experiment is an an advanced stage of construction and will run in 1997 at DAFNE, the Frascati f-Factory. Motivations, physics goals and expected performance are illustrated
Konzept Deutsch als Fremdsprache nach Englisch (DaFnE) – Notwendigkeit oder Wunschvorstellung? Empirische Untersuchung in Grundschulen in Großpolen
Get PDFDaFnE (German abbreviation: Deutsch als Fremdsprache nach Englisch – German after English) is an approach to teaching German as a third language to students who have already learned English. This methodology, which combines a first language (L1) with English as a second language (L2) and German as a third language (L3), is gaining popularity in Poland. This article contains both theoretical background and empirical research related to DaFnE. The first part introduces relevant definitions, aims of the DaFnE method and a short history of Tertiary Language Learning. The second part discusses teaching materials, which were created by the author of the article and used during empirical research in primary schools in the region of Greater Poland. Additionally, the paper includes results of surveys among the students and interviews among the German teachers
Private enterprise and digital participation: business model and the right to petition on Change.org
Get PDFEsta investigación pretende aproximarse al papel de Change.org como plataforma de petición electrónica en España, donde no existen alternativas administradas por los poderes públicos. Mediante un análisis de contenido cualitativo y una entrevista semi-estructurada, investigamos el modelo de negocio de la página, con el objetivo de conocer su política de protección de datos, su sistema de verificación de los usuarios y, de forma más general, el marco legislativo en el que opera. Los resultados obtenidos muestran al proyecto alejado del derecho de petición español, con un sistema de testeo laxo y que basa sus beneficios en el coste por adquisición.This research aims to approach the role of Change.org as an electronic petition platform in Spain, where there are no alternatives managed by public authorities. By a qualitative content analysis and a semi-structured interview, we research the business model of the page, in order to examine its data protection policy, its user verification system and, in a broader perspective, the legal framework in which it works. Results show the project is not related to Spanish law, it has a weak authentication system and its benefits are based on cost per acquisition
The (in)visible barriers to free software: Inequalities in online communities in Spain
Get PDFFree culture communities support self-learning, peer production, and the distribution of knowledge generated without any restrictions. However, free culture communities are not isolated from the social inequalities of the outside world. Understanding (in)visibility as the (in)ability to address internal under-representation within these communities, this research aims to analyse their member profiles and their perception of this issue. To this end, an online questionnaire was administered to 290 communities and interviews were conducted with members of 37 of these previously surveyed communities. The respondents and interviewees acknowledged that technopolitics requires a broad knowledge of the technical implications of their values, which makes access to and participation in a community more difficult. They also criticised the gender bias of their communities and, last but not least, pointed to other inequalities relating to the sexual orientation, socioeconomic level, or ethnic origin of the members of their communities
Deep Anatomical Federated Network (Dafne): an open client/server framework for the continuous collaborative improvement of deep-learning-based medical image segmentation
Get PDFSemantic segmentation is a crucial step to extract quantitative information
from medical (and, specifically, radiological) images to aid the diagnostic
process, clinical follow-up. and to generate biomarkers for clinical research.
In recent years, machine learning algorithms have become the primary tool for
this task. However, its real-world performance is heavily reliant on the
comprehensiveness of training data. Dafne is the first decentralized,
collaborative solution that implements continuously evolving deep learning
models exploiting the collective knowledge of the users of the system. In the
Dafne workflow, the result of each automated segmentation is refined by the
user through an integrated interface, so that the new information is used to
continuously expand the training pool via federated incremental learning. The
models deployed through Dafne are able to improve their performance over time
and to generalize to data types not seen in the training sets, thus becoming a
viable and practical solution for real-life medical segmentation tasks.Comment: 10 pages (main body), 5 figures. Work partially presented at the 2021
RSNA conference and at the 2023 ISMRM conference In this new version: added
author and change in the acknowledgmen
Características formales de las plataformas de peticiones online: sistemas públicos anglosajones, opciones privadas en España
Get PDFLas peticiones, que pueden definirse como demandas hacia instituciones gubernamentales concretas firmadas por los ciudadanos, han desarrollado en Internet nuevas posibilidades en relación al feedback con las Administraciones, la comodidad y flexibilidad o el ahorro económico, entre otros (Juris, 2005). En países esencialmente anglosajones se han desarrollado plataformas que canalicen esta forma de participación, como es el caso del Parlamento Escocés, el Bundestag Alemán, o los municipios noruegos (Lindner & Riehm, 2011). Sin embargo, en España este tipo de iniciativas se han gestionado a través de alternativas privadas. El objetivo del presente trabajo es explorar la relación entre una de estas webs, Change.org, a fin de definir su funcionamiento y confrontar los rasgos formales de cada uno de los modelos. Para alcanzar estos objetivos, realizamos un análisis de contenido cualitativo del sitio web de Change.org, y así analizar el procedimiento para crear y firmar peticiones, los foros de discusión, la estructura de la página principal y las posibilidades del usuario para contactar con los miembros de la página. Los datos del trabajo de campo muestran resultados diversos sobre Change respecto a las plataformas públicas de e-petitions. Así, la web de peticiones destaca por su diseño simple y la aportación de instrucciones y guías de uso que facilitan la participación sencilla y rápida por parte de los usuarios. Sin embargo, los escasos espacios de deliberación y las posibilidades de contacto con el equipo y usuarios de Change.org alejan a la página de un modelo público de recogida de firmas online.</jats:p
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