A fuzzy logic proposal for diagnosis multiple incipient faults in a power transformer

For the safety and continuity of service in industrial electrical systems, the availability of transformers is essential. For this reason, it is necessary to develop intelligent fault diagnosis techniques to reduce repair and maintenance costs. Recently, several methods have been developed that use artificial intelligence techniques such as neural networks, support vector machines, hybrid techniques, etc., for the diagnosis of faults in power transformers using gas analysis. These methods, although they present very good results, encounter restrictions to determine the precise moment before the occurrence of multiple fault of small magnitude and are difficult to implement in practice. This document proposes a method to diagnose multiple incipient faults in a power transformer using fuzzy logic. The proposal, based on historical data from the composition of the gases dissolved in the oil, achieves a performance in the classification of multiple incipient fault of 98.3%. With reliable samples of dissolved gas, it guarantees an overall rate of accuracy in detecting incipient faults that is superior to that obtained by the most successful conventional methods in the industry. The proposal does not encounter generalization difficulties and constitutes a simple solution that allows determining the state of the transformer in service without affecting the continuity of the electricity supply

Conociendo el medio natural, social y cultural de La Siberia

De las tierras de la provincia de Badajoz, La Siberia es una de las más hermosas y menos conocidas. Su historia ha estado fuertemente marcada por su naturaleza y su posición dentro de la península y en Extremadura. Desde la prehistoria hasta nuestros días, los ríos Guadiana y Zújar, junto a las sierras y llanos que los acompañan han sido protagonistas principales en el transcurso de los acontecimientos. Estos ríos y la riqueza de sus montes proporcionaban ya a los pobladores prehistóricos todo lo necesario para que estos decidieran asentarse aquí: agua, pesca, caza y un bosque repleto de frutos hacían de La Siberia un lugar idóneo donde vivir. Es una región con una gran variedad de paisajes, en su horizonte se entremezclan el azul de los cielos y las aguas junto a las tonalidades verdes de sus sierras. La variedad del paisaje alterna las sierras accidentadas, con los frondosos bosques de encinas, alcornoques, dehesas y áreas de cultivos. Destacan además los campos donde abundan las jaras, el tomillo y las flores silvestres. La orografía de la comarca está marcada por la cuenca de los embalses construidos en los tramos de los dos grandes ríos que cruzan la zona, el río Guadiana y el río Zújar. La construcción de estos embalses ha transformado la zona y la fauna se ha adaptado a estas nuevas condiciones ambientales.Of the lands of the province of Badajoz, La Siberia is one of the most beautiful and least known. Its history has been strongly marked by its nature and its position within the peninsula and in Extremadura. From prehistory to the present day, the Guadiana and Zújar rivers, together with the mountains and plains that accompany them, have been main protagonists in the course of events. These rivers and the richness of their mountains already provided the prehistoric settlers with everything they needed to settle here: water, fishing, hunting and a forest full of fruits made La Siberia an ideal place to live. It is a region with a great variety of landscapes, in its horizon the blue of the skies and the waters are mixed together with the green tonalities of its mountains. The variety of the landscape alternates the rugged mountain ranges, with the leafy forests of oaks, cork oaks, meadows and areas of crops. They also emphasize the fields where the rockrose, the thyme and the wild flowers abound. The orography of the region is marked by the basin of the reservoirs built on the stretches of the two great rivers that cross the area, the Guadiana River and the Zújar River. The construction of these reservoirs has transformed the area and the fauna has adapted to these new environmental conditions

Disease activity influences cardiovascular risk reclassification based on carotid ultrasound in patients with psoriatic arthritis

ABSTRACT: Objective. Because the addition of carotid ultrasound (US) into composite cardiovascular (CV) risk scores has been found effective for identifying patients with inflammatory arthritis and high CV risk, we aimed to determine whether its use would facilitate the reclassification of patients with psoriatic arthritis (PsA) into the very high Systematic Coronary Risk Evaluation (SCORE) risk category and whether this might be related to disease features. Methods. This was a cross-sectional study involving 206 patients who fulfilled ClASsification for Psoriatic ARthritis criteria for PsA, and 179 controls. We assessed lipid profile, SCORE, disease activity measurements, and the presence of carotid plaques and carotid intima-media thickness by ultrasonography. A multivariable regression analysis, adjusted for classic CV risk factors, was performed to evaluate whether the risk of reclassification could be explained by disease-related features and to assess the most parsimonious combination of risk reclassification predictors. Results. Forty-seven percent of patients were reclassified into a very high SCORE risk category after carotid US compared to 26% of controls (p < 0.001). Patients included in the low SCORE risk category were those who were more commonly reclassified (30% vs 14%, p = 0.002). The Disease Activity Index for PsA (DAPSA) score was associated with reclassification (? 1.10, 95% CI 1.02?1.19; p = 0.019) after adjusting for age and traditional CV risk factors. A model containing SCORE plus age, statin use, and DAPSA score yielded the highest discriminatory accuracy compared to the SCORE-alone model (area under the receiver-operating characteristic curve 0.863, 95% CI 0.789?0.936 vs 0.716, 95% CI 0.668?0.764; p < 0.001). Conclusion. Patients with PsA are more frequently reclassified into the very high SCORE risk category following carotid US assessment than controls. This was independently explained by the disease activity.Funding: This work was supported by a grant to I.F-A. from the Spanish Ministry of Health, Subdirección General de Evaluación y Fomento de la Investigación, Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 and by Fondo Europeo de Desarrollo Regional -FEDER - (Fondo de Investigaciones Sanitarias, FIS PI14/00394, PI17/00083) Professor González-Gay research was supported by European Union FEDER funds and by the “Fondo de Investigación Sanitaria” (grants PI06/0024, PS09/00748, PI12/00060, PI15/00525 and PI18/00043) of the ‘Instituto de Salud Carlos III’ (ISCIII, Health Ministry, Spain). It was also partially supported by RETICS Programs RD12/0009 (RIER), RD12/0009/0013 and RD16/0012 from the ‘Instituto de Salud Carlos III’ (ISCIII, Health Ministry, Spain)

Plant characterization of genetically modified maize hybrids MON-89Ø34-3 × MON-88Ø17-3, MON-89Ø34-3 × MON-ØØ6Ø3-6, and MON-ØØ6Ø3-6: alternatives for maize production in Mexico

Environmental risk assessment (ERA) of genetically modified (GM) crops is a process to evaluate whether the biotechnology trait(s) in a GM crop may result in increased pest potential or harm to the environment. In this analysis, two GM insect-resistant (IR) herbicide-tolerant maize hybrids (MON-89Ø34-3 9 MON-88Ø17-3 and MON-89Ø34-3 9 MON-ØØ6Ø3-6) and one herbicide-tolerant GM hybrid (MON-ØØ6Ø3-6) were compared with conventional maize hybrids of similar genetic backgrounds. Two sets of studies, Experimental Phase and Pilot Phase, were conducted across five ecological regions (ecoregions) in Mexico during 2009–2013, and data were subject to meta-analysis. Results from the Experimental Phase studies, which were used for ERA, indicated that the three GM hybrids were not different from conventional maize for early stand count, days-tosilking, days-to-anthesis, root lodging, stalk lodging, or final stand count. Statistically significant differences were observed for seedling vigor, ear height, plant height, grain moisture, and grain yield, particularly in the IR hybrids; however, none of these phenotypic differences are expected to contribute to a biological or ecological change that would result in an increased pest potential or ecological risk when cultivating these GM hybrids. Overall, results from the Experimental Phase studies are consistent with those from other world regions, confirming that there are no additional risks compared to conventional maize. Results from Pilot Phase studies indicated that, compared to conventional maize hybrids, no differences were detected for the agronomic and phenotypic characteristics measured on the three GM maize hybrids, with the exception of grain moisture and grain yield in the IR hybrids. Since MON-89Ø34- 3 9 MON-88Ø17-3 and MON-89Ø34-3 9 MONØØ6Ø3- 6 confer resistance to target insect pests, they are an alternative for farmers in Mexico to protect the crop from insect damage. Additionally, the herbicide tolerance conferred by all three GM hybrids enables more cost-effective weed management

Ultrasonography in rheumatology: time to learn from patient views

Objective: The objective of this observational, descriptive, cross-sectional, multicentre study was to assess the perceived quality and grade of satisfaction expressed by patients with chronic arthropathies regarding the use of musculoskeletal (MSK) ultrasonography by rheumatologists as an integrated clinical care tool. Methods: All Spanish rheumatology departments with MSK ultrasonography incorporated in their healthcare services were invited to participate in the study. A Spanish-language survey was offered to fill out anonymously to all consecutive patients with chronic arthropathies under follow-up in the rheumatology outpatient clinics who attended their centre for a period of 3 months. The survey consisted of three sections. The first section contained patients’ demographics, disease data, frequency of performing rheumatological ultrasound and information about who performed their ultrasound assessments. The second section consisted of 14 questions about patient’s experience and opinion on different aspects of the management, performance and perceived usefulness of performing ultrasound, to be answered on a Likert scale 1–5. The third section of the survey was addressed to the rheumatologist ultrasonographers. Results: Nine hundred and four patients from 16 university hospital rheumatology departments completed the survey. All questions reached an overall favourable response ≥ 80%. Patients who reported usual ultrasound examinations in their rheumatology care and those in which it was their attending rheumatologist who performed the ultrasound assessments responded more favourably. Conclusion: Our encouraging patient-centred results may be useful in facilitating the implementation of rheumatological ultrasound in rheumatology care worldwide. Key Points • This is the largest multicentre survey carried out in patients with chronic joint diseases designed to assess their experience and perceived benefits with the use of ultrasonography performed by rheumatologists in daily practice. • Musculoskeletal ultrasound incorporated into rheumatology care was very well accepted and valued by most patients. • The patients perceived that ultrasonography helps not only their rheumatologist but also themselves to better understand their condition. • The patients believed that ultrasonography helps them accept and comply with the proposed treatmen

SARS-CoV-2-reactive antibody detection after SARS-CoV-2 vaccination in hematopoietic stem cell transplant recipients: Prospective survey from the Spanish Hematopoietic Stem Cell Transplantation and Cell Therapy Group

This is a multicenter prospective observational study that included a large cohort (n = 397) of allogeneic (allo-HSCT; (n = 311) and autologous (ASCT) hematopoietic stem cell transplant (n = 86) recipients who were monitored for antibody detection within 3–6 weeks after complete severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination from February 1, 2021, to July 20, 2021. Most patients (n = 387, 97.4%) received mRNA-based vaccines. Most of the recipients (93%) were vaccinated more than 1 year after transplant. Detectable SARS-CoV-2-reactive antibodies were observed in 242 (78%) of allo-HSCT and in 73 (85%) of ASCT recipients. Multivariate analysis in allo-HSCT recipients identified lymphopenia < 1 × 109/ml (odds ratio [OR] 0.33, 95% confidence interval [95% CI] 0.16–0.69, p = .003), active graft versus host disease (GvHD; OR 0.51, 95% CI 0.27–0.98, p = .04) and vaccination within the first year of transplant (OR 0.3, 95% CI 0.15–0.9, p = .04) associated with lower antibody detection whereas. In ASCT, non-Hodgkin's lymphoma (NHL; OR 0.09, 95% CI 0.02–0.44, p = .003) and active corticosteroid therapy (OR 0.2, 95% CI 0.02–0.87, p = .03) were associated with lower detection rate. We report an encouraging rate of SARS-CoV-2-reactive antibodies detection in these severe immunocompromised patients. Lymphopenia, GvHD, the timing of vaccine, and NHL and corticosteroids therapy should be considered in allo-HSCT and ASCT, respectively, to identify candidates for SARS-CoV-2 antibodies monitoring.Peer reviewe

Fomento de la inserción laboral desde el aprendizaje servicio y emprendimiento social en los estudiantes del grado de trabajo social

Este proyecto ha seguido las principales líneas definidas en anteriores proyectos de innovación entre los que se encuentran: 1. El Proyecto de Innovación y Mejora de la Calidad Docente de la Convocatoria 2016/2017, con el nº 109, con el tema: “El impulso del emprendimiento como competencia transversal en los estudiantes del Grado de Trabajo Social”, premiado en la VII EDICIÓN de PREMIOS EMPRENDEDOR UNIVERSITARIO UCM, en la 4ª modalidad de Premio Innova docente. 2. El Proyecto de innovación y Mejora de la Calidad Docente de la Convocatoria 2017/2018, con el nº 54, con el tema: “ Red de Empleabilidad y Emprendimiento en los estudiantes del Grado de Trabajo Social” Se ha seguido investigando sobre el emprendimiento social como competencia transversal “iniciativa y espíritu emprendedor” en las asignaturas de: 1. Bases Teóricas del Trabajo Social, 2º Practicum (donde debe realizarse un Proyecto Social); 3. en el Trabajo Fin de Grado (TFG), ayudando a configurar el perfil profesional del alumnado, visualizando nuevas formas de dar respuesta a las necesidades de la población. En otras universidades españolas estos proyectos de innovación, son definidos en sus convocatorias como proyectos de investigación en innovación ya que la innovación conlleva un previo trabajo de investigación. Estas universidades reconocen la investigación que se realiza. En esta línea se encuentran universidades como la Universidad de Alicante, la Universidad Nacional de Educación a Distancia (UNED), la Universidad de Barcelona, etc., que definen la convocatoria como redes de investigación e innovación. Este reconocimiento y acreditación ha sido solicitado a la Universidad Complutense el 30 de Junio de 2016 por email. La existencia de emprendedores sociales como referentes históricos que vincularon su actividad universitaria con la innovación social y el progreso de la humanidad, justifican esta línea de trabajo. En este sentido se ha continuado con el Proyecto de Aprendizaje Servicio “UCM_MEDIMAYOR_ ALUMNI”, de formación en mediación a un grupo de mayores pertenecientes al Centro de Día Peñagrande del Ayuntamiento de Madrid. La responsabilidad social de la universidad, puede encontrase en esta función ya que se ha potenciado la adquisición de competencias profesionales a través de la colaboración en la sociedad Se ha continuado trabajando el fortalecimiento del emprendimiento social relacionado con el desarrollo social y humano, para la realización de una sociedad más equitativa y participativa desde distintas iniciativas que motiven la participación y la cooperación en esta sociedad desde sus instituciones. Entre los resultados obtenidos está la presentación a los estudiantes de buenas prácticas de emprendedores sociales y de estudiantes que han conseguido su inserción laboral, con el fin de incentivar la generación de nuevas experiencias en los estudiantes del Grado de Trabajo Social. Se destaca el hecho de que 12 estudiantes han terminado con un contrato de trabajo en su centro de practicas externas

Modernización del Sistema Aduanero y su vinculación con la sociedad civil

Informe de investigación--Universidad de Costa Rica, Vicerrectoría de Acción Social, Trabajo Comunal Universitario. 2012. Para mayor información puede escribir a [email protected] documento es una guía a los agroexportadores para que conozcan información general sobre los formularios exigidos en el tema de exportación, tales como modernización del sistema aduanero costarricense, notificaciones previas, el compendio de leyes en materia aduanera, la inscripción como importador, entre otras. La información del presente documento se complementa con las presentaciones adjuntas en este fichero.Universidad de Costa RicaUCR::Vicerrectoría de Acción Social::Trabajo Comunal Universitario (TCU