Visualización y talento matemático: una experiencia docente

Un debate abierto en educación matemática estudia qué relación existe entre visualización y talento matemático. En este artículo describimos una experiencia con alumnos con talento matemático, encaminada a observar la visualización durante la realización de actividades geométricas y a analizar algunas de las dimensiones de la visualización que ponen en juego este tipo de alumnos

Radiative two-pion decay of the tau lepton

We consider the bremsstrahlung and model-dependent contributions to the radiative decay $\tau^- \to \pi^-\pi^0\nu_{\tau}\gamma$ in the context of a meson dominance model. We focus on several observables related to this decay, including the branching ratio and the photon and di-pion spectra. Particular attention is paid to the sensitivity of different observables upon the effects of model-dependent contributions and of the magnetic dipole moment of the $\rho^-(770)$ vector meson. Important numerical differences are found with respect to results obtained in the framework of chiral perturbation theory.Comment: 14 pages, 8 figures, submitted for publicatio

CONSULTATION ON THE WHITE PAPER ON ARTIFICIAL INTELLIGENCE - A EUROPEAN APPROACH: LUSÓFONA UNIVERSITY OF PORTO, FACULTY OF LAW AND POLITICAL SCIENCE (ULP) COMMENT on COM(2020) 65 White Paper on Artificial Intelligence – A European approach to excellence and trust, and COM(2020) 64 final – Report on the safety and liability implications of Artificial Intelligence, the Internet of Things and robotics

SUMMARY   From 19 February to 14 June 2020, the European Commission held a Public Consultation on several policy and regulatory proposals that are currently being considered in the area of Artificial Intelligence (AI). This consultation was centered on two main documents presented by the Commission: the White Paper on Artificial Intelligence[1] and the “Report on the safety and liability implications of Artificial Intelligence, the Internet of Things and robotics”[2]. The consultation also included an online survey[3], where the central themes of those two documents were covered in a summarized way. In November 2020, the results of the consultation were presented, as well as the texts accepted for publication[4]. In order to participate in this pre-legislative process, a working group was created within the Faculty of Law and Political Science of the Lusófona University of Porto, which presented a contribution that was accepted and published by the European Commission[5]. The White Paper is centred in one powerful objective which is “to enable a trustworthy and secure development of AI in Europe, in full respect of the values and rights of EU citizens”, and for that presents two central ideas considered essential to attain it that are to create an ecosystem of excellence along the entire value chain and an ecosystem of trust that ensure compliance with EU rules, including rules protecting fundamental rights and consumers’ rights.  The text that follows is divided in two main parts: Part I is focused on presenting an overview on the three main topics pointed out at the consultation: Excellence, Trust and Liability; Part II corresponds to text of the contribution submitted in the Public Consultation held by the European Commission.   Keywords: Artificial Intelligence; Liability; Cybercrime; Ethics; Competition   [1] White Paper on Artificial Intelligence - A European approach to excellence and trust (COM(2020) 65 final), available on: https://ec.europa.eu/info/sites/info/files/commission-white-paper-artificial-intelligence-feb2020_en.pdf  [2] Report on the safety and liability implications of Artificial Intelligence, the Internet of Things and robotics (COM/2020/64 final), available on: https://eur-lex.europa.eu/legalcontent/en/TXT/?qid=1593079180383&uri=CELEX%3A52020DC0064 [3] https://ec.europa.eu/newsroom/dae/document.cfm?doc_id=68461 [4] https://ec.europa.eu/newsroom/dae/document.cfm?doc_id=68462 - Public consultation on the AI White Paper Final report. [5]https://ec.europa.eu/info/law/better-regulation/have-your-say/initiatives/12270-White-Paper-on-Artificial-Intelligence-a-European-Approach/public-consultation   DOI: https://doi.org/10.46294/ulplr-rdulp.v14i1.7475    RESUMO De 19 de Fevereiro a 14 de Junho de 2020, a Comissão Europeia realizou uma Consulta Pública sobre várias propostas políticas e regulamentares que estão actualmente a ser consideradas na área da Inteligência Artificial (IA).Esta consulta foi centrada em dois documentos principais apresentados pela Comissão: o Livro Branco sobre Inteligência Artificial e o "Relatório sobre as implicações da Inteligência Artificial, a Internet das Coisas e a Robótica em termos de segurança e responsabilidade" . A consulta incluiu também um inquérito em linha, onde os temas centrais desses dois documentos foram abordados de uma forma resumida.Em Novembro de 2020, foram apresentados os resultados da consulta, bem como os textos aceites para publicação .A fim de participar neste processo pré-legislativo, foi criado um grupo de trabalho na Faculdade de Direito e Ciência Política da Universidade Lusófona do Porto, que apresentou uma contribuição que foi aceite e publicada pela Comissão Europeia.O Livro Branco está centrado num objectivo poderoso que é "permitir um desenvolvimento fiável e seguro da IA na Europa, no pleno respeito pelos valores e direitos dos cidadãos da UE", e para isso apresenta duas ideias centrais consideradas essenciais para o alcançar que são a criação de um ecossistema de excelência ao longo de toda a cadeia de valor e um ecossistema de confiança que assegure o cumprimento das regras da UE, incluindo regras de protecção dos direitos fundamentais e dos direitos dos consumidores. O texto que se segue está dividido em duas partes principais: A Parte I está centrada na apresentação de uma visão geral sobre os três principais tópicos apontados na consulta: Excelência, Confiança e Responsabilidade; a Parte II corresponde ao texto da contribuição apresentada na Consulta Pública realizada pela Comissão Europeia. Palavras-chave: Inteligência Artificial; Responsabilidade; Cibercriminalidade; Ética; Concorrência   DOI: https://doi.org/10.46294/ulplr-rdulp.v14i1.747

Efeito da atmosfera modificada na qualidade pós-colheita de tangerinas "ponkan" durante o armazenamento refrigerado.

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Qualidade pós-colheita de laranja cv. salustiana sob atmosfera modificada durante o armazenamento refrigerado.

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Avaliação da qualidade de laranjas da cv. navelina em atmosfera modificada durante o armazenamento refrigerado.

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Production management model through MPS and line balancing to reduce the non-fulfillment of orders in lingerie clothing MSEs in Peru

The focus of this research is to establish control and planning management in the sewing production process of lingerie clothing to better prepare companies for demand growth. The lack of improvement tools in this sector, the lack of staff training and a lack of quality culture has led to companies, especially MYPES, not being able to meet the established delivery times and non-fulfillment of orders with the customers, which represents 80% of dissatisfied orders due to the limited production capacity and non-productive time in the plant. This problem is due to limited production capacity, deficient production planning, and lack of materials. In order to solve this problem, industrial engineering tools were used. The application of these tools improved production from 79% to 95%

Polymorphic transformation from body-centered to face-centered cubic vanadium metal during mechanosynthesis of nanostructured vanadium nitride determined by extended x-ray absorption fine structure spectroscopy

The pathway for vanadium nitride VN formation obtained by milling treatment has been traced out. At the initial stages of the process, the reactant, vanadium metal, showing body-centered cubic bcc structure, becomes highly distorted. Simultaneously, the formation of a small nucleus of the product, VN, takes place. X-ray absorption spectroscopy XAS has allowed the quantification of the distortion degree as well as the detection of the VN nucleus in the early stages of their formation, while other standard structural characterization techniques are unable to detect such phenomena. For increasing milling times, apart from the expected increase in the size of the VN nucleus, a polymorphic transformation from bcc to fcc vanadium metal has been recorded. This phase might play a key role in the overall synthesis process and could be a reaction intermediate in other solid state processes involving V metal. The sensitivity of XAS to noncrystalline domains and to highly distorted environments, as well as the use of high resolution x-ray diffraction, has provided the relevant information to understand the whole reaction process.European Synchrotron Radiation Facility (ESRF)-ME-737SpLine CRG (beamline BM25 at the ESRF)-25- 01-657Ministerio de Educación y Ciencias de España-BQU2002-04364-C02-01 y BQU2002- 04364-C02-

Realidad aumentada en visualización

La manera en la que las personas interactúan con las computadoras no siempre es la misma. A medida que la tecnología y las herramientas desarrolladas sobre las mismas avanzan, nuevas propuestas de interacción emergen y se crean nuevas interfaces. Las interfaces de Realidad Aumentada constituyen un ejemplo de tal desarrollo. Las mismas generan un entorno combinado para el usuario, por un lado información del mundo real, y por otro, información sintética creada y manejada por la computadora. Una correcta fusión de estos dos mundos en un único entorno o interfaz de usuario es el objetivo principal de un sistema de Realidad Aumentada. Por otro lado, la Visualización de Información es una de las herramientas más poderosas para lograr obtener una visión global de las posibles relaciones entre los datos y poder extraer conclusiones mediante el análisis. La línea de investigación presentada en este artículo se enfoca sobre la aplicación de las técnicas y los principios de la Realidad Aumentada al campo de la Visualización, teniendo en cuenta los aspectos importantes, ventajas, desafíos, etc. de ambas áreas tanto por separado como en su conjunto.Eje: Computación gráfica, imágenes y visualizaciónRed de Universidades con Carreras en Informática (RedUNCI