Fast Fault Location Method for a Distribution System with High Penetration of PV

Distribution systems with high levels of solar PV may experience notable changes due to external conditions, such as temperature or solar irradiation. Fault detection methods must be developed in order to support these changes of conditions. This paper develops a method for fast detection, location, and classification of faults in a system with a high level of solar PV. The method uses the Continuous Wavelet Transform (CWT) technique to detect the traveling waves produced by fault events. The CWT coefficients of the current waveform at the traveling wave arrival time provide a fingerprint that is characteristic of each fault type and location. Two Convolutional Neural Networks are trained to classify any new fault event. The method relays of several protection devices and doesn’t require communication between them. The results show that for multiple fault scenarios and solar PV conditions, high accuracy for both location and type classification can be obtained

Reliability of countermovement jump estimation using the Chronojump jump mat: intra-session and within-session

Vertical jump is a fundamental metric for monitoring and regulating lower body capacities, especially in assessing sports performance through the countermovement jump (CMJ). In recent years, various instruments aimed at estimating vertical jump heights have emerged. However, ensuring effective performance monitoring requires that jump mats prove consistency in measuring jumps across repeated tests, i.e., they must prove reliability. This study focuses on evaluating the intra-session and within-session test-retest reliability of the Chronojump jump mat in highly trained female volleyball players. Ten athletes from the Spanish Superliga 2 league participated in 100 CMJs over two sessions spaced a week apart. A repeated measures design collected jump height data using Chronojump jump mat. The protocol included a 10-min warm-up, a 5-min rest, and the execution of 5 CMJs with 2 min of rest between trials. Intra-session test-retest consistency was assessed by analyzing consecutive pairings of the first five trials. The study reveals moderate noise for SEM (1.56 cm) and standardized SEM (0.37), accompanied high SDC (4.33 cm) and SWC (0.44 cm). Correlation analysis indicated very high reliability (ICC =0.89), high concordance (CCC = 0.82) and a moderate CV (5.97%). Regarding within-session reliability, no significant differences were observed (Paired t-test p = 0.08; Hedges effect size g = 0.09). Additionally, very high correlations between both sessions were observed (r = 0.86). Absolute reliability analysis revealed a noise of 1.65 cm (SEM), resulting in high SDC (4.59 cm) and SWC (0.47 cm). Relative reliability, assessed through correlation coefficients, displayed very high values (ICC = 0.89 and CCC =0.89), although a moderate standardized SEM of 0.44 was observed. The Bland-Altman plot indicated systematic errors of the mean of 0.41 cm without substantial dispersion. Linear regression analyses between sessions showed a high correlation (r = 0.86), with a systematic error of 6.65 cm (intercept) and a random error of 2.01 cm (SEE). To sum up, the Chronojump jump mat proves reliability in measuring CMJ in female volleyball players across both intra-session and within-session contexts. High reliability suggests that this instrument can be deemed reliable for such measurements.This work was supported by Generalitat Valenciana (grant number GV/2021/098). Article developed during Dr. Jimenez-Olmedo's research intership with the Sports Biomechanics Research Group (GIBD) (GIUV2019-454) at University of Valencia

Increasing Jaundice Secondary to an Acute Toxic Hepatitis Induced by Levofloxacin in a 20-year-old Man with a Fibrolamellar Hepatocarcinoma

Introduction: Levofloxacin-induced liver injury is rare and usually mild and transient. Presentations in the form of acute fulminant hepatitis are extremely uncommon.Presentation of the case: We report the case of a 20-year old man with a fibrolamellar hepatocellular carcinoma (fHCC), with affected retroperitoneal lymph nodes but no hepatic disease involvement. After receiving levofloxacin for the treatment of a community-acquired pneumonia, he developed hyperbilirrubinemia and abnormal liver function tests in the context of an acute cholestasic toxic hepatitis. In spite of optimal supportive treatment, that included admission in the Intensive Unit Care and extracorporeal albumin dialysis detoxification, the patient developed a rapidly progressive liver failure and died a month after the beginning of the process. The necropsy findings confirmed extensive drug-induced hepatic necrosis. No liver involvement by the fHCC was found in the autopsy.Conclusion: Rarer intercurrent conditions, such as drug-induced hepatotoxicity, should be taken into account in cancer patients with deranged liver function tests, even in those patients with advanced disease.

Epidemiological Changes in Leishmaniasis in Spain According to Hospitalization-Based Records, 1997-2011: Raising Awareness towards Leishmaniasis in Non-HIV Patients

In Spain, Leishmania infantum is endemic, human visceral and cutaneous leishmaniasis cases occurring both in the Peninsula, as well as in the Balearic Islands. We aimed to describe the clinical characteristics of leishmaniasis patients and the changes in the disease evolution after the introduction of antiretroviral therapy in 1997. In this descriptive study, we used Spanish Centralized Hospital Discharge Database for the hospitalized leishmaniasis cases between 1997 and 2011. We included in the analysis only the records having leishmaniasis as the first registered diagnosis and calculated the hospitalization rates. Disease trend was described taking into account the HIV status. Adjusted odds-ratio was used to estimate the association between clinical and socio-demographic factors and HIV co-infection. Of the total 8010 Leishmaniasis hospitalizations records, 3442 had leishmaniasis as first diagnosis; 2545/3442 (75.6%) were males and 2240/3442 (65.1%) aged between 14-65 years. Regarding disease forms, 2844/3442 (82.6%) of hospitalizations were due to visceral leishmaniasis (VL), while 118/3442 (3.4%) hospitalizations were cutaneous leishmaniasis (CL). Overall, 1737/2844 of VL (61.1%) were HIV negatives. An overall increasing trend was observed for the records with leishmaniasis as first diagnosis (p=0.113). Non-HIV leishmaniasis increased during this time period (p=0.021) while leishmaniasis-HIV co-infection hospitalization revealed a slight descending trend (p=0.717). Leishmaniasis-HIV co-infection was significantly associated with male sex (aOR=1.6; 95% CI: 1.25-2.04), 16-64 years age group (aOR=17.4; 95%CI: 2.1-143.3), visceral leishmaniasis aOR=6.1 (95%CI: 3.27-11.28) and solid neoplasms 4.5 (95% CI: 1.65-12.04). The absence of HIV co-infection was associated with lymph/hematopoietic neoplasms (aOR=0.3; 95%CI:0.14-0.57), other immunodeficiency (aOR=0.04; 95% CI:0.01-0.32) and transplant (aOR=0.01; 95%CI:0.00-0.07). Our findings suggest a significant increase of hospitalization in the absence of HIV co-infection, with a predomination of VL. We consider that clinicians in Spain should be aware of leishmaniasis not only in the HIV population but also in non HIV patients, especially for those having immunosuppression as an associate condition

Social Media, Thin-Ideal, Body Dissatisfaction and Disordered Eating Attitudes: An Exploratory Analysis

Disordered eating attitudes are rapidly increasing, especially among young women in their twenties. These disordered behaviours result from the interaction of several factors, including beauty ideals. A significant factor is social media, by which the unrealistic beauty ideals are popularized and may lead to these behaviours. The objectives of this study were, first, to determine the relationship between disordered eating behaviours among female university students and sociocultural factors, such as the use of social network sites, beauty ideals, body satisfaction, body image and the body image desired to achieve and, second, to determine whether there is a sensitive relationship between disordered eating attitudes, addiction to social networks, and testosterone levels as a biological factor. The data (N = 168) was obtained using validated surveys (EAT-26, BSQ, CIPE-a, SNSA) and indirect measures of prenatal testosterone. The data was analysed using chi-square, Student’s t-test, correlation tests and logistic regression tests. The results showed that disordered eating attitudes were linked to self-esteem (p < 0.001), body image (p < 0.001), body desired to achieve (p < 0.001), the use of social media (p < 0.001) and prenatal testosterone (p < 0.01). The findings presented in this study suggest a relationship between body image, body concerns, body dissatisfaction, and disordered eating attitudes among college women

Consistency and agreement between professors and students in the employment of rubrics for the development and assessment of written projects in the subject of sport biomechanics

[EN] The implication of the students in assessment process has grown in Superior Studies through the use of rubrics. However, the design of the instruments is a complex task and it must be adapted to the subject with the aim to ensure an optimal evaluation. The objective of this study was to identify differences in the results obtained between self-assessment and teacher assessment and to analyse the inter-evaluative reliability. 48 students participated in the study. At the end of practice session in Biomechanical subject the students prepared a task according to the items included in the rubric and it was delivered together with selfassessment rubric. After that, professors assessed the tasks with the same rubric. The mark obtained by student assessment was higher than the provided by the professor assessment. 67% of the items present a good or excellent repeatability but the remaining 33% showed a regular repeatability. It suggests the need to improve the item description accurary in the different grades of achieve.[ES] La implicación del alumnado en el proceso de evaluación ha aumentado en las Enseñanzas Superiores mediante el uso de rúbricas. Sin embargo, el diseño del instrumento es una tarea compleja y se debe adecuar a cada asignatura para garantizar una adecuada evaluación. El objetivo del estudio ha sido identificar posibles diferencias en los resultados de las evaluaciones realizadas por el profesorado y el alumnado, así como analizar la fiabilidad inter-evaluador de la rúbrica diseñada. En el estudio participaron un total de 48 estudiantes. Al finalizar la sesión práctica de la materia de Biomecánica, el alumnado realizó una memoria de la práctica y lo entregó junto a la rúbrica proporcionada para su auto evaluación. Posteriormente, el profesorado evaluó dichos trabajos con la misma rúbrica. Las calificaciones realizadas por el alumnado fueron mayores que las del profesorado en todos los ítems. La repetibilidad intraevaluador fue excelente o buena en el 67% de los ítems, mientras que el 33% restante obtuvo una repetibilidad regular. Por lo tanto, se requiere un aumento de la precisión en la descripción de los distintos niveles de logro.Sánchez-Jiménez, J.; Marzano-Felisatti, J.; Aparicio-Aparicio, I.; Encarnacion-Martinez, A.; Jimenez-Perez, I.; Perez-Soriano, P.; Priego-Quesada, J. (2022). Repetibilidad y concordancia entre profesorado y alumnado en el uso de rúbricas para desarrollo y evaluación de trabajos escritos en la materia biomecánica deportiva. Editorial Universitat Politècnica de València. 272-284. https://doi.org/10.4995/INRED2022.2022.1586727228

Cognitive assessment in patients with multiple sclerosis: A Spanish consensus

Cognitive assessment; Consensus; Multiple sclerosisEvaluación cognitiva; Consenso; Esclerosis múltipleAvaluació cognitiva; Consens; Esclerosi múltipl

El proyecto SafetyNet para la obtención de Indicadores de velocidad de flujo libre: contribuciones metodológicas y aplicación al caso español.

En este trabajo se presentan los resultados de la aplicación de las recomendaciones del proyecto europeo SafetyNet para la estimación de indicadores de SPI (Safety Performance Indicators) de la velocidad de flujo libre (VFL), es decir, circulación en tramos en perfectas condiciones de firme y visibilidad y tráficos moderados, de forma que la única restricción que se le presenta al conductor es la velocidad que marca la ley, con el objetivo de tener un marco común de indicadores (en este caso el de VFL) en los países europeos. Para ello, en España, se ha diseñado un muestreo estratificado por regiones, dividiendo el territorio en 8 regiones: Andalucía (R-1); Meseta Central excluyendo Madrid, es decir, las dos Castillas y Extremadura (R-2); Madrid (R-3); Valencia y Murcia (R-4); Cataluña (R-5); Galicia y Asturias (R-6); País Vasco, Navarra, Cantabria y La Rioja (R-7) y Aragón (R-8). Se han elegido al azar 100 puntos de observación repartiendo en cada estrato región-tipo de vía proporcionalmente a las poblaciones e IMD respectivamente. Se ha estimado la distribución de la VFL en cuatro tipos de vía (autopistas, autovía, carreteras convencionales de la red estatal y autonómicas con dos tipos de límite de velocidad: 90 y 100 km/h y tres tipos de vehículos (ligeros, motos y pesados). Los tramos de la muestra fueron sometidos a dos fases de verificación del cumplimento de las recomendaciones de SafetyNet para la obtención de los indicadores de VFL: la primera fase de gabinete, con herramientas informáticas y la segunda fase in situ, cuya criba y reemplazo de los tramos seleccionados en la etapa de gabinete, ha sido mínima. Se han instalado dispositivos de medición de velocidades muy precisos en cada punto de observación. Aunque la hipótesis de normalidad (distribución gaussiana) es habitual en estudios de velocidad y en muchos casos razonable a la luz de los datos, en este estudio se ha utilizado la herramienta estadística más general, no paramétrica de bootstrap en inglés o remuestreo en español. Los resultados de las mediciones nocturnas superan claramente el límite establecido por la ley y los valores diurnos, lo cual podría conducir a recomendar mayor . vigilancia de la velocidad en tipos de vías y horarios concretos. Se ha estimado la distribución de velocidades dando valores puntuales e intervalos de confianza para la velocidad media, desviación típica, percentiles (85%, 2,5% y 97,5%), así como la proporción de vehículos que superan la velocidad máxima permitida por la ley y de vehículos que superan la velocidad máxima permitida por la ley en 10 km/

A Bibliometric Analysis of the Health Field Regarding Social Networks and Young People

Social networks have historically been used to share information and support regarding health-related topics, and this usage has increased with the rise of online social media. Young people are high users of social media, both as passive listeners and as active contributors. This study aimed to map the trends in publications focused on social networks, health, and young people over the last 40 years. Scopus and the program VOSviewer were used to map the frequency of the publications, keywords, and clusters of researchers active in the field internationally. A structured keyword search using the Scopus database yielded 11,966 publications. The results reveal a long history of research on social networks, health, and young people. Research articles were the most common type of publication (68%), most of which described quantitative studies (82%). The main discipline represented in this literature was medicine, with 6062 documents. North American researchers dominate the field, both as authors and partners in international research collaborations. The present article adds to the literature by elucidating the growing importance of social networks in health research as a topic of study. This may help to inform future investments in public health research and surveillance using these novel data sources