Overview of the treatment of historical industrial heritage in engineering graphics

This article presents a comprehensive review of the stages of research when addressing the issue of historical industrial heritage from the point view of engineering graphics, looking at its influence on all stages of the value chain. It provides a contextual introduction, explaining the research, the aim pursued and the priority objectives of this type of work. It also presents the methodology and the materials used, specifying important details needed to obtain a realistic result, such as fieldwork, 3D virtual modeling, virtual reconstruction, and more usual techniques used such as augmented reality and virtual reality. Finally, the dissemination of the results and the advantages and disadvantages of the virtual reconstructions are presented

Calidad de vida, salud y ejercicio físico : una aproximación al tema desde una perspectiva psicosocial

El propósito del presente artículo es ofrecer algunas de las relaciones que se han establecido entre la Actividad Física y la Calidad de Vida. Asimismo, se pretende exponer algunas de las aportaciones surgidas de las investigaciones en este ámbito científico. En la última década, la Psicología del Deporte ha ampliado su ámbito de actuación, pasando a ocuparse entre otras cuestiones de la relación existente entre la Actividad Física y los posibles beneficios para los practicantes. Estos beneficios quedan reflejados en aspectos tanto físicos, como psicológicos y sociales.The aim of this paper consists of offering some ot the relationships that have been established between physical activity and quality of life. Furthermore, we attempt to show some of the suggestions appearing in researches related to this scientific field. In the last decade, Sport Psychology has widened it

A new and fast index for the quantification of short range self-similarity in RR time series

We propose a new and very fast index (the frequency of sign changes of the mirrored differences or fscmd) with good correlation with the short range scaling exponent ( Ｒ) estimated among scales 4 to 16 of the DFA. fscmd computes the relative number of sign changes of the difference of the RR time series minus their corresponding reversed RR time series after a moving average detrending procedure is applied using a window of 30 samples. Linear regression results with simulated time series with Fractional Brownian Noise and with actual time series using the Fantasia (FT), Normal Sinus Rhythm RR time series (NSR) and Congestive Heart Failure RR interval (CHF) databases after artifact correction show good agreement between fscmd and Ｒ. Finally, Mann-Whitney Rank Sum tests applied to Ｒ and fscmd when comparing NSR and CHF databases show very significant differences (p<0.001) between groups for both indices.Postprint (published version

Estimation of the uncertainty in time domain indices of RR time series

A method for estimating the uncertainty in time-domain indices of RR time series is described. The method relies on the central limit theorem that states that the distribution of a sample average of independent samples has an uncertainty that asymptotically approaches to the sample standard deviation divided by the square root of the number of samples. Because RR time series cannot be characterized by a set of independent samples, we propose to estimate the uncertainty of indices by computing them in blocks that satisfy that the obtained partial indices are independent. We propose a methodology to search sets of independent partial indices and apply this methodology to the estimation of the uncertainty in the mean RR, SDRR, and r-msDD indices. The results show that the uncertainty can be higher than the 10% of the index for the SDRR and even higher for the r-msDD. Moreover, a statistical test for the difference of two indices is proposed.Peer Reviewe

Falsedades y mitos en los estudios sobre migraciones: consecuencias para las Relaciones Internacionales

La reproducción de nociones falsas y mitos en los estudios sobre migración disminuye la credibilidad en su conexión con las Relaciones Internacionales y la Seguridad. Para evitar eso, proponemos la utilización del escepticismo creativo como herramienta académica. De esta manera, valoramos el área de estudios sobre migración analizando su desarrollo institucional y la calidad de sus resultados de investigación. Como segundo paso, describimos los seis mitos más persistentes en los estudios sobre migración en las siguientes áreas: en el del Derecho; en el de las Políticas Públicas; en el de la Demografía; en el de la Economía; en el de la cooperación y el desarrollo y, en el de la cultura; por la importancia que para estas investigaciones tienen las distintas etnias y religiones. Concluye el artículo con ejemplos de las implicaciones que el uso de mitos tiene para las relaciones internacionales entre Estados miembros de la Unión Europea

Driver drowsiness detection based on respiratory signal analysis

Drowsy driving is a prevalent and serious public health issue that deserves attention. Recent studies estimate around 20% of car crashes have been caused by drowsy drivers. Nowadays, one of the main goals in the development of new advanced driver assistance systems is the trustworthy drowsiness detection. In this paper, a drowsiness detection method based on changes in the respiratory signal is proposed. The respiratory signal, which has been obtained using an inductive plethysmography belt, has been processed in real-time in order to classify the driver’s state of alertness as drowsy or awake. The proposed algorithm is based on the analysis of the respiratory rate variability (RRV) in order to detect the fight against to fall asleep. Moreover, a method to provide a quality level of the respiratory signal is also proposed. Both methods have been combined to reduce false alarms due to changes of measured RRV associated not to drowsiness but body movements. A driving simulator cabin has been used to perform the validation tests and external observers have rated the drivers’ state of alertness in order to evaluate the algorithm performance. It has been achieved a specificity of 96.6%, sensitivity of 90.3% and Cohen’s Kappa agreement score of 0.75 on average across all subjects through a leave-one-subject-out cross-validation. A novel algorithm for driver’s state of alertness monitoring through the identification of the fight against to fall asleep has been validated. The proposed algorithm may be a valuable vehicle safety system to alert drowsiness while drivingPeer ReviewedPostprint (published version

Fine-grained high-performance Ba0.85Ca0.15 Zr0.1Ti0.9O3 piezoceramics obtained by current-controlled flash sintering of nanopowders

Due to environmental concerns, extensive research has been carried out to develop high-performance lead-free piezoceramics capable of replacing commercial lead-based materials. The lead-free (Ba0.7Ca0.3)TiO3 -Ba(Zr0.2Ti0.8)O3 system has emerged as a candidate for room temperature transducer applications because a high piezoelectric charge coefficient is achieved in this system for compositions at the morphotropic phase boundary. However, conventional ceramic processing of these eco-friendly piezoceramics demands high energy consumption because long-lasting, high-temperature heat treatments are needed, which often lead to microstructural degradation that compromises the material reliability. Field-assisted flash sintering has started to be explored since the application of an adequate electric field was shown to significantly reduce the sintering time and temperature, thereby controlling grain growth. In this work, Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics are obtained by current-controlled flash sintering of mechanosynthesized nanopowders. Exhaustive control of the sintering parameters allows tailoring of the microstructure, which allows dense fine-grained flash-sintered ceramics exhibiting a high electric field-induced strain response to be obtained.This work was supported by the Agencia Estatal de Investigación (AEI), Spain, projects PGC2018-099158-B-I00 and PID2021–122708OB-C33. S. L-B. thanks Agència de Gestió d′Ajuts Universitaris i de Recerca (AGAUR), Catalonia, Spain, for the FI-SDUR contract (2020 FISDU 00489). The authors acknowledge the ESRF (The European Synchrotron) for provision of synchrotron radiation facilities, and we would like to thank the BM25 (SpLine) staff for assistance in using the beamline.Peer ReviewedPostprint (published version

A comparison of heartbeat detectors for the seismocardiogram

The study aimed to study the accuracy in RR time series derived from the seismocardiogram when employing different heartbeat detectors in subjects measured in a quiet environment. The ECG and seismocardiogram of 17 healthy volunteers was recorded at a sampling frequency of 5 kHz using a Biopac acquisition system. The seismocardiogram was acquired using a triaxial accelerometer (LIS344ALH, ST Microelectronics). Four detectors of the heartbeat from the seismocardiogram were employed relying either on the Continuous Wavelet Transform or bandpass filtering. The detectors adapt their parameters to the morphology of the signal by estimating mean heart rate and the bandwidth of the signal associated to the heartbeat. For all detectors, the standard deviation of the error in the obtained RR time series is in mean slightly higher than 2 ms and the percentage of obtained RR time intervals that have an error higher than 30 ms is around 3.5%. The seismocardiogram, when measured in a quiet environment, can be used instead of the ECG to obtain reliable RR time series when using proper heartbeat detectors.Peer ReviewedPostprint (published version

Software architecture for smart emotion recognition and regulation of the ageing adult

This paper introduces the architecture of an emotion-aware ambient intelligent and gerontechnological project named “Improvement of the Elderly Quality of Life and Care through Smart Emotion Regulation”. The objective of the proposal is to find solutions for improving the quality of life and care of the elderly who can or want to continue living at home by using emotion regulation techniques. A series of sensors is used for monitoring the elderlies’ facial and gestural expression, activity and behaviour, as well as relevant physiological data. This way the older people’s emotions are inferred and recognized. Music, colour and light are the stimulating means to regulate their emotions towards a positive and pleasant mood. Then, the paper proposes a gerontechnological software architecture that enables real-time, continuous monitoring of the elderly and provides the best-tailored reactions of the ambience in order to regulate the older person’s emotions towards a positive mood. After describing the benefits of the approach for emotion recognition and regulation in the elderly, the eight levels that compose the architecture are described.This work was partially supported by Spanish Ministerio de Economía y Competitividad/FEDER under TIN2013-47074-C2-1-R grant. José Carlos Castillo was partially supported by a grant from Iceland, Liechtenstein and Norway through the EEA Financial Mechanism, operated by Universidad Complutense de Madrid.Publicad

Aplicación del modelo trans-teórico en la planificación docente de educación física de Nuevo León

Resumen: El propósito del siguiente estudio es identificar las etapas de cambio de la planificación en educación física en docentes del nivel primaria, del sistema federal del estado de Nuevo León. Participaron 98 docentes quienes aceptaron responder una encuesta. Nuestros resultados indican que el 62% de nuestra muestra se encuentra en una etapa de Precontemplación, el 5% en la etapa de Contemplación, un 4% de la muestra está en una etapa de Preparación, 10% de la muestra se encuentra en la etapa de Acción, y el 19 % de la muestra está en una etapa de Mantenimiento. Este es un estudio piloto descriptivo de tipo transversal, donde la muestra fue por conveniencia y se utilizó una encuesta basada en las etapas de cambio. El modelo trans-teórico se podría utilizar para un estudio a nivel estatal y establecer estrategias para la mejora de la práctica de la planificación en Educación Física. Abstract: The purpose of this study is to identify the stages of change of planning in teaching physical education at the primary level, the federal system of the state of Nuevo Leon. They participated 98 teachers who agreed to answer a survey. Our results indicate the 62% of our sample is in a stage of Precontemplation, 5% in the contemplation stage, 4% of the sample is at a stage of preparation, 10% of the sample is in the action stage, and 19% of the sample is at a stage of maintenance. This is a descriptive cross-sectional pilot study where the sample was for convenience and a survey based on the stages of change was used. The trans-theoretical model could be used for a statewide study and develop strategies for improving the planning practice in Physical Education