Young with Down Syndrome and recreation swimming activity: Inclusion posibilities

El propósito del estudio fue analizar las percepciones de los agentes participantes y los factores que inciden en la inclusión de un niño con síndrome de Down (SD) en un programa de natación recreativa. Los participantes fueron: un joven con SD, nueve jóvenes sin discapacidad diagnosticada, la monitora de natación, el coordinador de la actividad y la madre del niño con SD. El presente estudio, basado en una metodología cualitativa, recogió la información a través de entrevistas semi-estructuradas, observación sistemática y diario de la investigadora. La utilización de un proceso inductivo permitió categorizar la información y obtener los siguientes resultados: es necesaria una mayor coordinación entre los agentes implicados, adaptar el programa en función de las características de todos los participantes, mejorar la formación específica de los técnicos responsables y la fluidez de la comunicación entre los agentes implicados para posibilitar la inclusión del niño con SD a través de la natación recreativaThe purpose of this study was to analyse the perceptions of the participant agents and factors affecting the inclusion of a child with Down syndrome (DS) in a recreational swimming activity program. Program participants included: a child with DS, nine children without diagnosed disabilities, the swimming instructor, the mother of a child with DS and the coordinator of the activity. This study was based on qualitative research approach and data were collected through semi-structured interviews, systematic observation and research diary. The following results were obtained after the inductive process: the need of greater coordination among those involved, designs appropriate programs based on the characteristics of all participants, improve specific training of technicians responsible as well as improve the communication of the agents participating in order to enable the inclusion of a child with DS in a recreational swimming activit

Synchronization in Random Geometric Graphs

In this paper we study the synchronization properties of random geometric graphs. We show that the onset of synchronization takes place roughly at the same value of the order parameter that a random graph with the same size and average connectivity. However, the dependence of the order parameter with the coupling strength indicates that the fully synchronized state is more easily attained in random graphs. We next focus on the complete synchronized state and show that this state is less stable for random geometric graphs than for other kinds of complex networks. Finally, a rewiring mechanism is proposed as a way to improve the stability of the fully synchronized state as well as to lower the value of the coupling strength at which it is achieved. Our work has important implications for the synchronization of wireless networks, and should provide valuable insights for the development and deployment of more efficient and robust distributed synchronization protocols for these systems.Comment: 5 pages, 4 figure

Arc Stability Characterization of Double Coated Electrodes for Hardfacing

The aim of this work is to establish the influence of the relative position of the alloy charge C-Cr-Mn in the structure of the coating of rutile electrodes for hardfacing, on the operational behavior (arc stability). For this, three variants of electrodes with similar chemical composition are elaborated in the metallic core and the coating, differentiating only in the relative position that occupies the alloy charge (C-Cr-Mn) in the structure of the coating: internal, external and homogeneous. For the development of the research, a completely random design is used. The operative characterization of the electrodes is performed in terms of the arc stability. In conclusion, it can be seen that the position of the alloy load influences the operation behavior (stability of the arc). The variant of internal alloy charge in the coating presents the better arc stability performance

Neural Network calibration method for VARANS models to simulate wave-coastal structures interaction.

[EN] This study develops a calibration method for the porous media to properly model the interaction between waves and coastal structures using VARANS models. The proposed method estimates the porosity, np, and the optimum values of the Forchheimer coefficients, and , that best represent the wave-structure interaction for a complete set of laboratory tests. Physical tests were conducted in a 2D wave flume for a homogeneous mound breakwater under regular wave conditions. Numerical tests were carried out using the IH-2VOF model to simulate the corresponding physical tests and incident wave conditions (HI, T). The numerical tests covered a wide range of Forchheimer coefficients found in the literature, and , and the porosity, np, with a total of 555 numerical tests. The results of 375 numerical tests using IH-2VOF were used to train a Neural Network (NN) model with five input variables (HI, T, np, and ) and one output variable . The NN model explained more than 90% (R2 > 0.90 and RMSE <5%) of the variance of the squared coefficient of reflection, . This NN model was used to estimate the in a wide range of np, and , and the error () between the physical measurements with regular waves and the NN estimations of was calculated. The results of as function of np, and showed that for a given porosity, np, it was difficult to obtain a pair of and values that gave a common low error if few physical tests are used for calibration. Then to calibrate properly a VARANS model it seems necessary to check the results obtained for each combination of and with many laboratory {HI, T} tests. The minimum root-mean-square error of ( was calculated to find the optimum values of porosity and Forchheimer coefficients: np = 0.44, = 200 and = 2.825 for the tested structure. Blind tests were conducted with the remaining 180 numerical tests using IH-2VOF to validate the proposed method for VARANS models. In this study, eight or more physical tests were required to find adequate values of np, and for VARANS models related to the best performance of wave-porous structure interaction.The first author is funded through the Juan de la Cierva 2020 program (FJC 2020-044778-I) by " Union Europea - NextGenerationEU en el marco del Plan de Recuperacion, Transformacion y Resiliencia de Espana ", Spanish Ministry of Science and Innovation. This work is supported by two projects (1) PID 2021-126475OB-I00 and (2) PID 2021-128035OA- I00, funded by the MCIN/AEI/10.13039/501100011033 and, as appropriate, by " ERDF A way of making Europe", by the " European Union NextGenerationEU/PRTR". The authors thank Professor Javier L. Lara and the Environmental Hydraulics Institute of Cantabria (IH-Cantabria, Spain) for providing the IH-2VOF numerical model.Díaz-Carrasco, P.; Molines, J.; Gómez-Martín, ME.; Medina, JR. (2024). Neural Network calibration method for VARANS models to simulate wave-coastal structures interaction. Coastal Engineering. 188. https://doi.org/10.1016/j.coastaleng.2023.10444318

40Ar/39Ar laserprobe dating of mylonitic fabrics in a polyorogenic terrane of NW Iberia

The tectonothermal evolution of a polyorogenic terrane in the Variscan belt of NW Spain has been constrained by 40Ar/39Ar laserprobe incremental heating experiments on mylonitic fabrics developed in major structures. Transitional levels between HP–HT and IP upper units in the O´ rdenes Complex where metamorphic and structural records demonstrate two cycles of burial and exhumation were selected for dating. Two groups of ages have been defined: (1) Silurian–Early Devonian, obtained from mylonites of the Forna´s extensional detachment, here considered as the minimum age for the start of tectonic exhumation of the HP– HT units and an upper age-limit for the HP–HT event itself; (2) Early to Mid-Devonian, from structures related to the Variscan convergence in the area, which include top-to-the-east thrusts and extensional detachments. A single, younger Carboniferous age obtained from the uppermost allochthonous sequences possibly reflects the final stages of emplacement of the allochthonous complexes. Our data indicate a polyorogenic character for a part of the Iberian allochthonous complexes, including Variscan (sensu stricto) and Early Variscan convergence, as well as an older, Early Palaeozoic cycle