130 research outputs found
TRIMÁLAGA
[ES] La siguiente comunicación pretende hacer la presentación del proyecto TRIMÁLAGA en el contexto del presente Congreso Internacional de Arqueología e Informática Gráfica, Patrimonio e Innovación. Creemos que es el foro ideal para dar a conocer nuestro trabajo. Básicamente con el proyecto TRIMÁLAGA se pretende hacer una maqueta virtual, un modelo tridimensional de la Málaga de finales del siglo XVIII (haciendo uso de las nuevas tecnologías informáticas que nos brinda el s. XXI) tomando como referencia el plano de 1791 de D. Joseph Carrión de Mula.[EN] The following communication tries to do the presentation of the project TRIMÁLAGA in the context of the present International Congress of Archaeology and Graphical Computer science, Heritage and Innovation. We believe that it is the ideal forum to announce our work. Basically with the project TRIMÁLAGA one tries to do a virtual model, a three-dimensional model of the Malaga of ends of the 18th century (using the new IT technologies that it offers to us s. The XXIst) taking as a reference the plane of 1791 of D. Joseph Carrión de Mula.Guerrero-Strachan Carrillo, J.; Contreras López, MÁ. (2012). TRIMÁLAGA. Virtual Archaeology Review. 3(5):121-125. https://doi.org/10.4995/var.2012.4540OJS12112535AYALA ÁLVAREZ, Francisco Javier (1992): Análisis sobre la evolución de la arquitectura de Málaga en los siglos XVIII y XIX, Colegio Oficial de aparejadores y arquitectos técnicos de Málaga.BARBÁN DE CASTRO, F. y MEDINA CONDE, C. (2000): Descripción de Málaga. Universidad de Málaga. (342)BEJARANO ROBLES, Francisco (2000): Las calles de Málaga. Ed. Sarria.CABRERA PABLOS, Francisco; OLMEDO CHECA, Manuel (2006): Málaga a finales del siglo XVIII, Real Academia de Bellas Artes de San Telmo.CAMACHO MARTÍNEZ, Rosario (1981): "Málaga Barroca. Arquitectura religiosa de los s. XVII y XVIII", Málaga, Universidad, 1980, pp. 234-237.OLMEDO CHECA, Manuel (1997): "José Carrión de Mula", en Revista Péndulo XVI, Málaga, Colegio Oficial de ingenieros técnicos industriales, s.a., pp. 196-210.PORTILLO FRANQUELO, Pedro (1983): "Presentación de los Planos de la ciudad y puerto de Málaga de Joseph Carrión de Mula y de Onofre Rodríguez", Málaga.REINA MENDOZA, José Manuel (1982): La vivienda en la Málaga de la segunda mitad del siglo XVIII, Biblioteca popular malagueña, D.L.RODRÍGUEZ MARÍN, Francisco José (2000): Málaga Conventual. Estudio histórico, artístico y urbanístico de los conventos malagueños, Ed. Argaval.TEMBOURY ÁLVAREZ, Juan, Colección fotográfica disponible en el Archivo Provincial de Málaga
División proporcional con múltiples referencias. Aplicación al caso de agregación y actualización de probabilidades
En este trabajo se considera una extensión de los problemas clásicos de reparto en los
que las referencias relevantes de cada agente están expresadas por un vector, es decir, problemas
de división con múltiples referencias. Nuestro propósito es definir una regla que, permitiendo
que se reduzca el número de agentes, se comporte como una regla de división no manipulable y
satisfaga algunas propiedades deseables en este tipo de problemas. Como aplicación se analizan
los problemas de agregación y actualización de probabilidades.In this paper, we consider an extension of classic division problems in which the
relevant references of each agent are represented by a vector, that is, division problems with
multiple references. We define a non-manipulable division rule satisfying some desirable
properties in the class of multi-issue allocation problems. As an application we analyze the
probability aggregation problem and the probability updating problem.Ministerio de Ciencia y Tecnología SEJ2007-62711Consejería de Innovación de la Junta de Andalucía P06-SEJ-0180
Adjustment of Lighting Parameters from Photopic to Mesopic Values in Outdoor Lighting Installations Strategy and Associated Evaluation of Variation in Energy Needs
The sensitivity of the human eye varies with the different lighting conditions to which it is exposed. The cone photoreceptors perceive the color and work for illuminance conditions greater than 3.00 cd/m2 (photopic vision). Below 0.01 cd/m2, the rods are the cells that assume this function (scotopic vision). Both types of photoreceptors work coordinately in the interval between these values (mesopic vision). Each mechanism generates a different spectral sensibility. In this work, the emission spectra of common sources in present public lighting installations are analyzed and their normative photopic values translated to the corresponding mesopic condition, which more faithfully represents the vision mechanism of our eyes in these conditions. Based on a common street urban configuration (ME6), we generated a large set of simulations to determine the ideal light point setup configuration (luminance and light point height vs. poles distance ratio) for each case of spectrum source. Finally, we analyze the derived energy variation from each design possibility. The results obtained may contribute to improving the criterion of light source selection and adapting the required regulatory values to the human eye vision process under normalized artificial street lighting condition, reaching an average energy saving of 15% and a reduction of 8% in terms of points of light required. They also offer a statistical range of energy requirements for lighting installation that can be used to generate accurate electrical designs or estimations without the necessity of defining the exact lighting configuration, which is 77.5% lower than conventional design criteria
Implementación en FPGA del algoritmo ICA para Cancelación de ruido en dispositivos móviles
Actualmente se ha incrementado el uso de dispositivos móviles como celulares y tabletas electrónicas, las cuales manipulan muchas aplicaciones, y requieren de procesadores con mayor potencial de procesamiento. En este artículo se propone el uso de una arquitectura paralela en un FPGA (del inglés Field Programmable Gate Array), que realice la cancelación del ruido en tiempo real e independiente de las tareas del procesador de un equipo. La técnica utilizada es el Análisis de Componentes Independientes (ICA del inglés Independent Component Analysis), que se basa en las propiedades estadísticas de las señales en espacios multidimensionales, calcula los pesos sinápticos dato a dato y originalmente está inspirada en la arquitectura de las Redes Neuronales Artificiales. En el desarrollo se realizó la arquitectura con Simulink mediante el software de Matlab y posteriormente con un lenguaje de Descripción de Hardware HDL-Verilog (HDL del inglés hardware description language), se realizó la implementación en un FPGA; La conversión de las señales analógicas a digitales y digitales a analógicas, se realizó mediante un ADC y un DAC de 12 bits a una frecuencia de muestreo de 44Khz; y se obtuvieron resultados de la simulación y de losexperimentales
Evolution of COVID-19 pregnancies treated with nitazoxanide in a third-level hospital.
Background Nitazoxanide shows adequate in vitro activity against coronavirus. The aim of this study was to describe the behavior of coronavirus disease 2019 (COVID-19) in pregnant women treated with nitazoxanide. Methodology This cross-sectional study included the files of COVID-19 positive pregnant women treated with nitazoxanide 500 mg every 6 hours, levofloxacin every 12 hours, and clarithromycin 500 mg every 12 hours. Results The data of 51 women (mean age: 27.4 ± 7.2 years) were analyzed. Eleven (21.56%) patients had to receive medical attention in the intensive care unit. There were 22 (43.13%) preterm deliveries, 21 by cesarean and one by vaginal delivery. The medical attention of this population was as follows: 31 cesareans, five vaginal deliveries, nine still pregnant, two requiring manual vacuum aspiration, two ectopic pregnancies, one requiring curettage, and one requiring hysterotomy. There were seven (13.72%) cases of preeclampsia, and there were two (3.92%) deaths. Conclusion Nitazoxanide prescription could be an option against COVID-19 in pregnancy due to its safety profile
Study on the Acceptability of an ICT Platform for Older Adults with Mild Cognitive Impairment
EhcoBUTLER is an Information and Communication Technology (ICT) solution funded by the EuropeanUnion (H2020; ID: 643566)and intended especially for elderly people with mild cognitive impairment (MCI) to improve their health, independence and quality oflife, particularly at the social level. The purpose of this study is to assess the acceptability of ehcoBUTLER based on a survey deliveredto potential users and actors involved in their care, exploring theirexpectations and preferences, while anticipating the system'sfunctional requirements. The survey was delivered online to 313participants (11% end users, 25% informal caregivers, 48% formalcaregivers and 16% administration/management staff) from eight countries. Participants rated the different functionalities ofehcoBUTLER positively, 86.1% perceiving it as an interesting and useful system. Likewise, they assessed it as a commerciallyattractive product (75.1%). End users expressed a stronger preference for the social module. Nevertheless, they would be ready topay a low monthly price for ehcoBUTLER. Professionals would be willing to pay choosing its functionalities modularly, but theywould also expect it to be funded by the National Health System, centres or businesses. The conclusion is that all participants foundehcoBUTLER interesting, useful and ergonomic. However, to effectively implement it, it is necessary to bridge the digital gap andaddress the issue of insufficient investment in products aimed atolder adults with cognitive impairment. To supplement cognitivetraining systems with social, emotional or entertainment functionalities could improve adherence to their use
Rice and bean AHL-mimic quorum-sensing signals specifically interfere with the capacity to form biofilms by plant-associated bacteria
Many bacteria regulate their gene expression in response to changes in their population density in a process called quorum sensing (QS), which involves communication between cells mediated by small diffusible signal molecules termed autoinducers. n-acyl-homoserine-lactones (AHLs) are the most common autoinducers in proteobacteria. QS-regulated genes are involved in complex interactions between bacteria of the same or different species and even with some eukaryotic organisms. Eukaryotes, including plants, can interfere with bacterial QS systems by synthesizing molecules that interfere with bacterial QS systems.
In this work, the presence of AHL-mimic QS molecules in diverse Oryza sativa (rice) and Phaseolus vulgaris (bean) plant-samples were detected employing three biosensor strains. A more intensive analysis using biosensors carrying the lactonase enzyme showed that bean and rice seed-extract contain molecules that lack the typical lactone ring of AHLs. Interestingly, these molecules specifically alter the QS-regulated biofilm formation of two plant-associated bacteria, Sinorhizobium fredii SMH12 and Pantoea ananatis AMG501, suggesting that plants are able to enhance or to inhibit the bacterial QS systems depending on the bacterial strain. Further studies would contribute to a better understanding of plant–bacteria relationships at the molecular level
Filtros suavizadores en imágenes sintéticas de resonancia magnética cerebral: un estudio comparativo
This paper presents the evaluation of two computational
techniques for smoothing noise that might be present
in synthetic images or numerical phantoms of magnetic
resonance (MRI). The images that will serve as the databases (DB) during the course of this evaluation are available freely on the Internet and are reported in specialized literature as synthetic images called BrainWeb. The
images that belong to this DB were contaminated with
Rician noise, this being the most frequent type of noise
in real MRI images. Also, the techniques that are usually
considered to minimize the impact of Rician noise on the
quality of BrainWeb images are matched with the Gaussian filter (GF) and an anisotropic diffusion filter, based on
the gradient of the image (GADF). Each of these filters has
2 parameters that control their operation and, therefore,
undergo a rigorous tuning process to identify the optimal
values that guarantee the best performance of both the
GF and the GADF. The peak of the signal-to-noise ratio
(PSNR) and the computation time are considered as key
elements to analyze the behavior of each of the filtering
techniques applied. The results indicate that: a) both filters generate PSNR values comparable to each other. b)
The GF requires a significantly shorter computation time
to soften the Rician noise present in the considered DB.
Keywords: Synthetic Cerebral images, Magnetic resonance, Rician noise, Gaussian filter, Anisotropic diffusion
filter, PSNR.Este artículo presenta la evaluación de dos técnicas computacionales para el suavizado de ruido, que puede estar
presente en imágenes sintéticas o phantoms numéricos de
resonancia magnética (MRI). Las imágenes que servirán
como bases de datos (DB) para el desarrollo de la mencionada evaluación están disponibles, de manera libre, en
la Internet y se reportan, en la literatura especializada,
como imágenes sintéticas denominadas BrainWeb. Las
imágenes pertenecientes a esta DB fueron contaminadas
con ruido Riciano debido a que este es el tipo de ruido
más frecuente en imágenes de MRI reales. Por otra parte,
las técnicas consideradas para minimizar el impacto de
este ruido, en la calidad de las imágenes de la BrainWeb,
se hacen coincidir con el filtro Gausiano (GF) y un filtro de
difusión anisotrópica, basado en el gradiente de la imagen
(GADF). Cada uno de estos filtros posee 2 parámetros que
controlan su funcionamiento y, por ende, deben someterse a un proceso de entonación riguroso para identificar
los valores óptimos que garanticen el mejor desempeño
tanto del GF como del GADF. El pico de la relación señal
a ruido (PSNR) y el tiempo de cómputo son considerados
como elementos clave para analizar el comportamiento
de cada una de las técnicas de filtrado aplicadas. Los resultados indican que: a) Ambos filtros generan valores de
PSNR comparables entre sí. b) El GF requiere de un tiempo
de cómputo, significativamente, menor para suavizar el
ruido Riciano presente en la DB considerada.
Palabras clave: Imágenes sintéticas cerebrales, Resonancia magnética, Ruido Riciano, Filtro Gausiano, Filtro de
difusión anisotrópica, PSNR
Development of a disease-specific quality of life questionnaire for adult patients with hereditary angioedema due to C1 inhibitor deficiency (HAE-QoL): Spanish multi-centre research project
BACKGROUND: There is a need for a disease-specific instrument for assessing health-related quality of life in adults with hereditary angioedema due to C1 inhibitor deficiency, a rare, disabling and life-threatening disease. In this paper we report the protocol for the development and validation of a specific questionnaire, with details on the results of the process of item generation, domain selection, and the expert and patient rating phase. METHODS/DESIGN: Semi-structured interviews were completed by 45 patients with hereditary angioedema and 8 experts from 8 regions in Spain. A qualitative content analysis of the responses was carried out. Issues raised by respondents were grouped into categories. Content analysis identified 240 different responses, which were grouped into 10 conceptual domains. Sixty- four items were generated. A total of 8 experts and 16 patients assessed the items for clarity, relevance to the disease, and correct dimension assignment. The preliminary version of the specific health-related quality of life questionnaire for hereditary angioedema (HAE-QoL v 1.1) contained 44 items grouped into 9 domains. DISCUSSION: To the best of our knowledge, this is the first multi-centre research project that aims to develop a specific health-related quality of life questionnaire for adult patients with hereditary angioedema due to C1 inhibitor deficiency. A preliminary version of the specific HAE-QoL questionnaire was obtained. The qualitative analysis of interviews together with the expert and patient rating phase helped to ensure content validity. A pilot study will be performed to assess the psychometric properties of the questionnaire and to decide on the final version
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