Interfaz gráfica de aplicaciones de control desarrolladas con Python

La revolución industrial 4.0 tiene entre sus bases la optimización de la operación de procesos industriales, permitiendo así desarrollar herramientas de cálculo potentes y eficientes en estos procesos. Sin embargo, esta revolución no es un indicativo fiable de su presencia en la cotidianidad de los entornos industriales, en muchas ocasiones por falta de conocimientos de utilización de los operarios. Por esto el presente TFG, propone el diseño de interfaz gráfica que permita la comunicación entre un algoritmo desarrollado en Python, que busca optimizar la simulación de una planta azucarera para mejorar su competitividad en el mercado eléctrico español. La interfaz gráfica que comunica al operario y la optimización, ha sido realizada a través del software industrial Wonderware, mediante el protocolo de comunicaciones OPC UA. Como resultado, gracias al trabajo realizado cualquier operario sería capaz de lanzar optimizaciones sin necesitar conocimiento alguno de programaciónDepartamento de Ingeniería de Sistemas y AutomáticaGrado en Ingeniería en Electrónica Industrial y Automátic

Gestión de datos de investigación en los Observatorios de Turismo Regional en Chile

The article presents the results of a study about Chile's experience in the creation of Tourism Observatories in regions of Chile, considering two dimensions of study: firstly, regarding the level of performance achieved according to its basal purposes: To monitor tourism activity and generate information to aid decision-making, and secondly, to the way in which they conducted the management of tourism research data, considering management and opening processes. The main problem evidenced in the Observatories of tourism was the constitution, management and diffusion of the data that they had to provide.En el artículo se exponen los resultados de un estudio sobre la experiencia que tuvo Chile en la creación de Observatorios de turismo en regiones de Chile, considerando dos dimensiones de estudio: en primer lugar, respecto al nivel de desempeño alcanzado atendiendo a sus propósitos basales: monitorear la actividad turística y generar información de ayuda a la toma de decisiones, y en segundo lugar, respecto a la manera en que realizaron la gestión de datos de investigación en turismo, considerando procesos de gestión y apertura. El principal problema evidenciado en los Observatorios de turismo fue la constitución, gestión y difusión de los datos que debían proveer

Diagnóstico y propuesta para optimizar la red de aire comprimido en la planta de producción de la industria textilera Tennat, S. A.

Elaborar el diagnóstico y propuesta para optimizar la red de aire comprimido en la planta de producción de la industria textilera Tennat, S. A., así realizar el diagnóstico sobre la situación actual a la red de distribución de aire comprimido para determinar las pérdidas de presión y el costo energético que representan para la empresa y brindar a los mecánicos y encargados del sistema de aire comprimido, conceptos fundamentales sobre el manejo y mantenimiento del sistema, enfocados a minimizar la caída de presión en la red de distribución

Validation study of the Functional Assessment Scale for Acute Hamstring injuries in Spanish professional soccer players

Objective: To cross-culturally adapt and validate the Functional Assessment Scale for acute hamstring injury for professional Spanish-speaking soccer players. Design: Clinical measurement study. Cross-cultural adaptation was conducted following international recommendations. Indicators of validity, reliability and responsiveness are provided. Subjects: The Spanish version of the Functional Assessment Scale for acute hamstring injury scale was administered to 165 participants: 45 professional soccer players with acute hamstring muscle injury diagnosis, 40 healthy subjects, 40 individuals at-risk for a hamstring muscle injury and 40 patients with injuries of the lower limb other than hamstring muscle injury. Main measures: The Functional Assessment Scale for acute hamstring injury. Reference measures: Spanish version of the Quality of Life Short-Form 36 questionnaire (SF-36) and the Lower Limb Functional Index (LLFI). Results: Cronbach’s alpha (internal consistency) for the Spanish version of the Functional Assessment Scale for acute hamstring injury scale was >0.8. The intraclass correlation coefficient using the two-way random model (ICC2,1) (test–retest) was 0.993 (95% confidence interval (CI): 0.991–0.995; P < 0.05). In the exploratory factor analysis, a one-factor solution explained 85% of the variance. Subjects with hamstring muscle injury scored significantly lower than the other groups in the Spanish version of the Functional Assessment Scale for acute hamstring injury scale (P < 0.001). The Spanish version of the Functional Assessment Scale for acute hamstring injury scale score within the hamstring muscle injury group showed moderate and significant correlations with SF-36 physical components (Spearman’s rs > 0.6; P < 0.001), and LLFI score at baseline (rs = 0.42; P < 0.01). The standard error of measurement (SEM) and minimum detectable change threshold (MDC95%) were 2.6 and 7.2 points, respectively. The responsiveness indicators have an effect size of 3.62, and the standardized response mean is 3.24. Conclusion: The Spanish version of the Functional Assessment Scale for acute hamstring injury scale showed satisfactory psychometric properties. It can be considered a reliable and valid instrument to assess the functional impact of acute hamstring muscle injury in professional Spanish-speaking football players

Instrument validation to measure teachers' perceptions of universal design for learning

El diseño universal para el aprendizaje (dua) ha sido estudiando en los últimos años como modelo para responder a la diversidad en el aula. Sin embargo, hay pocas investigaciones que proporcionen datos sobre su eficacia. El objetivo de este artículo es validar una herramienta que permita evaluar las percepciones basadas en dua de los profesionales, a través del análisis factorial confirmatorio de una muestra de 230 profesionales. Para ello, una escala fue creada con 26 ítems: 9 ítems para el principio 1, 8 ítems para el principio 2 y 9 ítems para el principio 3. Los resultados muestran que la escala tenía una solución confirmatoria válida de tres factores, índices de confiabilidad satisfactorios y adecuada validez relacionada con los criterios. Los autores concluyen que se debe avanzar en la medición efectiva del dua en la literatura científica, que el concepto está en constante evolución y, que, por tanto, la literatura científica y los trabajos académicos deben acompañar esta corriente basada en la inclusión y el derecho de todos a tener una educación en igualdad de oportunidadesThe universal design for learning has been studied in recent years as a model for addressing diversity in the classroom. However, there are few scientific studies that provide data on their efficacy. The aim of this paper is to validate a tool which to evaluate the perceptions based on universal design for learning framework by professional, via confirmatory factor analysis, with a sample of 230 professionals. Reliability, factorial and criterial validity estimates are presented. A final scale was composite with 26 items: 9 items for principle 1, 8 items for principle 2 and 9 items for principle 3. Overall, the results shown that the scale had an adequate three-factor confirmatory solution, satisfying reliability indices, and adequate criterion-related validity. The authors conclude that we must advance in the effective measurement of udl in the scientific literature, that the concept is constantly evolving and that, therefore, scientific literature and academic work should accompany this trend based on inclusion and the right of everyone to have an equal opportunity educatio

Validation of the International Consultation on Incontinence Questionnaire‑Pediatric Lower Urinary Tract Symptoms (ICIQ‑CLUTS) for Spanish‑speaking children

The International Consultation on Incontinence Questionnaire-Pediatric Lower Urinary Tract Symptoms (ICIQ-CLUTS) is a 12-item self-administered tool to screen lower urinary tract symptoms (LUTS) in children. The aim of this study is to translate and validate the ICIQ-CLUTS into Spanish (ICIQ-CLUTS-Sp) and to study its psychometric properties. The cross-cultural adaptation of the ICIQ-CLUTS was performed following international recommendations. The psychometric analysis of the ICIQ-CLUTS-Sp was carried out to determine the reliability, validity, and diagnostic accuracy in a sample of 155 children and parents who completed the Spanish version ICIQ-CLUTS. The reliability indicators for the ICIQ-CLUTS-Sp were excellent (Cronbach's alpha was > 0.8 and ICC > 0.9 both for children's and parents' versions). There was a high Pearson r > 0.6 and a high agreement level between children's and parents' answers (ICC > 0.6), except in 4 items. For parents, the standard error of measurement (SEm) was 0.41, and the minimal detectable change (MDC) was 1.14 points. In children, these results were 0.42 and 1.16 points, respectively. Cut-off points greater than 15 points in the parent version or 16 points in the children version have the highest sensitivity and specificity for detecting LUTS. Conclusion: The Spanish version of the ICIQ-CLUTS questionnaire is a valid, reliable, and diagnostically accurate instrument to identify cases of children with LUTS. Therefore, it can be used to screen for lower urinary tract symptoms in Spanish speaking children and/or parents, as well as to monitor the effects of interventions. What is Known: • Lower urinary tract symptoms in children should be assessed multimodally using minimally invasive diagnostic procedures. One way to do this is to use the questionnaire to differentiate these cases in paediatric patients. • A cross-cultural adaptation of the ICIQ-CLUTS questionnaire to Spanish has not yet been done. What is New: • Based on a comprehensive validation methodology, this study highlights that the ICIQ-CLUTSSp questionnaire has good psychometric properties

Comparison between two-fluid model simulations and particle image analysis & velocimetry (PIV) results for a two-dimensional gas-solid fluidized bed

This work compares simulation and experimental results of the hydrodynamics of a two-dimensional, bubbling air-fluidized bed. The simulation in this study has been conducted using an Eulerian–Eulerian two-fluid approach based on two different and well-known closure models for the gas–particle interaction: the drag models due to Gidaspow and Syamlal & O'Brien. The experimental results have been obtained by means of Digital Image Analysis (DIA) and Particle Image Velocimetry (PIV) techniques applied on a real bubbling fluidized bed of 0.005 m thickness to ensure its two-dimensional behaviour. Several results have been obtained in this work from both simulation and experiments and mutually compared. Previous studies in literature devoted to the comparison between two-fluid models and experiments are usually focused on bubble behaviour (i.e. bubble velocity and diameter) and dense-phase distribution. However, the present work examines and compares not only the bubble hydrodynamics and dense-phase probability within the bed, but also the time-averaged vertical and horizontal component of the dense-phase velocity, the air throughflow and the instantaneous interaction between bubbles and dense-phase. Besides, quantitative comparison of the time-averaged dense-phase probability as well as the velocity profiles at various distances from the distributor has been undertaken in this study by means of the definition of a discrepancy factor, which accounts for the quadratic difference between simulation and experiments The resulting comparison shows and acceptable resemblance between simulation and experiments for dense-phase probability, and good agreement for bubble diameter and velocity in two-dimensional beds, which is in harmony with other previous studies. However, regarding the time-averaged velocity of the dense-phase, the present study clearly reveals that simulation and experiments only agree qualitatively in the two-dimensional bed tested, the vertical component of the simulated dense-phase velocity being nearly an order of magnitude larger than the one obtained from the PIV experiments. This discrepancy increases with the height above the distributor of the two-dimensional bed, and it is even larger for the horizontal component of the time-averaged dense-phase velocity. In other words, the results presented in this work indicate that the fine agreement commonly encountered between simulated and real beds on bubble hydrodynamics is not a sufficient condition to ensure that the dense-phase velocity obtained with two-fluid models is similar to that from experimental measurements on two-dimensional bedsThis work has been partially funded by the Spanish Government (ProjectDPI2009-10518) and the Autonomous Community of Madrid (ProjectS2009/ENE-1660). Their supports are greatly appreciatedPublicad

The Effect of Cranio-Cervical Position on Core Muscle Activation during the Prone Plank Exercise

This study aimed to investigate the influence of head position on the electromyographical activity of the core muscles during the prone plank exercise. Twenty healthy participants were enrolled in this study. Muscle activation was registered using surface electromyography in the rectus abdominis, external oblique, internal oblique, and the lumbar portion of erector spinae. Three plank conditions were randomly evaluated, varying the position of the cranio-cervical segment during the plank performance (neutral, flexion and extension). The activation of each individual examined muscle and the overall core muscle activity (Total Intensity), as well as the ratings of perceived exertion were analysed with statistical significance set at p 0.90). The rectus abdominis presented larger activation in flexion compared to the other variations (p 0.70). Flexion elicited a greater response for both sides of external oblique when compared to neutral and extension, and also for both sides of internal oblique compared to the other conditions (p 0.70). Both flexion and extension reported higher exertion rating values compared to neutral (p 0.90). Head position influenced the electromyographical activation of core musculature, showing highest values when performing the plank in a head flexion.This research was funded by Consellería de Educación, Investigación, Cultura y Deporte de la Generalitat Valenciana, and European Social Fund (European Union), Grant Project Number ACIF/2016/048

Solar multiple optimization of a DSG linear Fresnel power plant

Linear Fresnel power plants are currently one of the most promising concentrating solar power plants. However there are only a few commercial projects. These power plants have a lower efficiency than parabolic trough collector plants and are still expensive. To increase the efficiency of these plants, the utilization of water/steam in the receivers (direct steam generation, DSG) and thermal storage (TES) have been considered. As case study, a 50 MWe solar-only linear Fresnel power plant located in Seville, Spain is considered. The effects of the solar field size and the thermal storage size on the annual production of the plant are analyzed: Nine different solar field sizes and up to eight thermal storage sizes have been compared. An economic optimization is presented in order to determine which plant has lowest Levelized Cost of Electricity (LCOE). It has been found that for the power plants with no-storage the optimum solar multiple (SM) is 1.7, whereas for the cases with thermal storage, the optimum configuration is a larger solar field (SM = 2), with a thermal storage of 2 h

Migration of antimony from polyethylene terephthalate used in mineral water bottles.

The influence of storage time and temperature on Sb migration from PET bottles into mineral water was studied in short-term tests lasting up to 15 days and long-term studies lasting up to 220 days. Samples purchased were stored in three different coloured bottles: clear (CL), light blue (LB) and dark blue (DB). Sb migration was assayed by HG-AFS for total determination and HPLC-ICP-MS for speciation analysis. Migration studies showed that waters stored at 4 and 20 oC were not subject to Sb migration. At 40 oC there was a significant increase in Sb concentration, although the maximum limit established by the European Union (5.0 ug/L) was not exceeded, whereas at 60 oC samples were subject to considerable Sb migration after 30 days of storage. In this case, the maximum limit established by the European Union was exceeded and both Sb (V) and Sb (III) were detected