Blackspot seabream early life stages dispersal by hydrodynamic modelling (Strait of Gibraltar - Alboran Sea)

The Blackspot seabream (Pagellus bogaraveo) is a commercially appreciated demersal fish, widespread in the north-eastern Atlantic and middle-western Mediterranean. The Strait of Gibraltar (SoG) is an important fishing area where artisanal fleets from Spain and Morocco target this species using special longline gears known as “voracera”. Different studies on the health status of this species claim an overexploitation of the resource without any kind of objective management measures implemented yet by the associated countries. Improving the knowledge of the population dynamics, and particularly during the spawning window, is crucial for a better management of the fishing effort for this species. There is an agreement in literature in considering the SoG as an especially energetic and dispersive spawning zone for this species. Once spawned, eggs and larvae (ELS) are assumed to be scattered by the currents towards both sides of the SoG, mostly to the eastwards Alboran basin, where high concentrations of juveniles occur. A high resolution hydrodynamic model coupled to a Lagrangian particle tracking system is employed to assess the potential dispersal pathways of blackspot seabream ELS spawned in the SoG. Recursive releases of passive tracers in different virtual spawning spots and depths within the SoG region are tracked under different tidal conditions in order to obtain an overall characterization of the spatial dispersion patterns of the studied species. Semidiurnal tidal currents emerge as the primary factor in determining the horizontal dispersion and pathway of the spawning products, although the spring-neap tidal cycle and the spawning depth can be also important variables depending on the region considered as well as the arrival zone for the ELS dispersal paths over the Alboran SeaUniversidad de Málaga. Campus de Excelencia Internacional CEIMA

Brachial artery peak velocity variation to predict fluid responsiveness in mechanically ventilated patients

Journal Article;ClinicalTrials.gov ID: NCT00890071INTRODUCTION Although several parameters have been proposed to predict the hemodynamic response to fluid expansion in critically ill patients, most of them are invasive or require the use of special monitoring devices. The aim of this study is to determine whether noninvasive evaluation of respiratory variation of brachial artery peak velocity flow measured using Doppler ultrasound could predict fluid responsiveness in mechanically ventilated patients. METHODS We conducted a prospective clinical research in a 17-bed multidisciplinary ICU and included 38 mechanically ventilated patients for whom fluid administration was planned due to the presence of acute circulatory failure. Volume expansion (VE) was performed with 500 mL of a synthetic colloid. Patients were classified as responders if stroke volume index (SVi) increased >or= 15% after VE. The respiratory variation in Vpeakbrach (DeltaVpeakbrach) was calculated as the difference between maximum and minimum values of Vpeakbrach over a single respiratory cycle, divided by the mean of the two values and expressed as a percentage. Radial arterial pressure variation (DeltaPPrad) and stroke volume variation measured using the FloTrac/Vigileo system (DeltaSVVigileo), were also calculated. RESULTS VE increased SVi by >or= 15% in 19 patients (responders). At baseline, DeltaVpeakbrach, DeltaPPrad and DeltaSVVigileo were significantly higher in responder than nonresponder patients [14 vs 8%; 18 vs. 5%; 13 vs 8%; P 10% predicted fluid responsiveness with a sensitivity of 74% and a specificity of 95%. A DeltaPPrad value >10% and a DeltaSVVigileo >11% predicted volume responsiveness with a sensitivity of 95% and 79%, and a specificity of 95% and 89%, respectively. CONCLUSIONS Respiratory variations in brachial artery peak velocity could be a feasible tool for the noninvasive assessment of fluid responsiveness in patients with mechanical ventilatory support and acute circulatory failure. TRIAL REGISTRATION ClinicalTrials.gov ID: NCT00890071.Ye

Study of Recall in Reading Skill with Relationship of Prior Knowledge–Researching Significative Intergrupal Differencies

In this paper we try to assess whether there are differences in a group when their members try to remember the content of a text, and if this fact affects the learning levels through an experimental methodology with a design of two groups only with posttest to assess the readers’ free recall after reading a text. We found firstly interindividual and intergroup differences in recall of textual material. And secondly text comprehension and therefore the memory of the reading depend largely on reader's inferences. In this paper we propose a specific intervention in order to prepare students for a better understanding of the text read, using a simple methodology to apply with materials easy to prepare

Influence Of The Density Of Caulerpa Prolifera (Chlorophyta) On The Composition Of The Macrofauna In A Meadow In Algeciras Bay (Southern Spain)

The coverage and biomass fluctuations of Caulerpa prolifera (Chlorophyta) were used to assess the influence of the alga on the composition of its associated animal community, on a small spatial scale.Bymeans of ordination analysis, based on species abundance, a series of groups, related to the different algal density recorded, were obtained: those stations with highest algal biomass (stations 1, 2 and 8) and the remaining stations (medium and low biomass). According to a canonical correspondence analysis, total algal biomass, coverage and percentage of organic matter explained the differences in the composition of the macrobenthic communities. The response of some species to the spatial distribution of the alga are also discussed. In conclusion, the patchiness of Caulerpa beds cause a high degree of heterogeneity in a spatially reduced system, suggesting the importance of these sites for the biodiversity in coastal ecosystemsLas fluctuaciones de biomasa y cobertura de Caulerpa prolifera (Chlorophyta) se utilizaron para estimar la influencia de la presencia del alga sobre la composición de la comunidad animal asociada, en una pequeña escala espacial. Por medio de análisis de ordenación, basados en la abundancia de las distintas especies, se han obtenido agrupaciones de estaciones relacionadas con la diferente densidad de alga. Fundamentalmente, se han diferenciado aquellos puntos con mayor biomasa algal (estaciones 1, 2 y 8) y el resto de las estaciones de muestreo (biomasa media o baja). De acuerdo con los resultados del análisis de correspondencias canónicas, la biomasa total de alga, la cobertura y el porcentaje de materia orgánica del sedimento son los factores que explican las diferencias en la composición de las comunidades de macrobentos. Se discuten las respuestas de diversas especies a la distribución espacial del alga. En definitiva, las discontinuidades de Caulerpa propician un alto grado de heterogeneidad en un sistema tan reducido espacialmente como éste, lo que pone de manifiesto la importancia de estos enclaves para el mantenimiento de la biodiversidad en el sistema litoral

The policy of transfer of curricular reforms between Spain and Brazil. Towards the psychologization of education

In order to adapt the organization and functioning of the educational system to the constitutional requirements derived from the document of 1978, the Spanish educational reform of the 1980s and 90s went beyond the national borders encompassing international spaces. In its broad and firm expansion to different countries of the Latin American orbit, we want to show how it had a special impact on the reform of the Brazilian education agreed in the nineties reflecting on its development, especially, in the PCNs (National Curricular Parameters). We approach this analysis, derived from the application of the Systematic Literature Review method, which we anticipate of high value and interest, from a threefold dimension that seeks to investigate the influences of Spanish educational policies on Brazil. Firstly, we make use of the essential and classic contribution on school culture made by Professor Escolano (2000). Secondly, we advance until we approach curriculum design (what we understand as“the discourse”) and its consequent projection. And finally, thirdly, we analyze the tensions between psychologists and pedagogues both in interpretative and academic terms that were illustrated in conferences, congresses, seminars and, of course, in the publication of books, articles and reports. Key words: educational system; psychological and pedagogical reform; influences of educational policies; Spain; Brazil

Superimposed training-based channel estimation for miso optical-OFDM vlc

In this paper, we investigate a novel channel estimation (CE)method for multiple-input and single-output (MISO) systems in visible lightcommunication (VLC). Direct current biased optical orthogonal frequencydivision multiplexing (DCO-OFDM) is commonly used in VLC where halfof the available subcarriers are spent to guarantee a real-valued outputafter the inverse fast Fourier transform operation. Besides, dedicated subcarriers are typically used for CE, thus, many resources are wasted andthe spectral efficiency is degraded. We propose a superimposed trainingapproach for CE in MISO DCO-OFDM VLC scenarios. Analytical expressions of mean squared error (MSE) and spectral efficiency are derived whenthe least squares estimator is considered. This analysis is valid for outdoorand indoor scenarios. For the CE error, simulation results of MSE showa perfect match with analytical expressions. Moreover, results prove thatthis technique guarantees a larger spectral efficiency than previous schemeswhere dedicated pilots were used. Finally, the optimal data power allocationfactor is also analytically derived.This work was supported in part by the National Secretary of Higher Education, Science, Technology, and Innovation (SENESCYT) in Ecuador and in part by the Spanish National Project TERESA-ADA (TEC2017-90093-C3-2-R) (MINECO/AEI/FEDER, UE). The work of B. G. Guzmán was supported by the Spanish MECD FPU Fellowship Program

Approx-SMOTE: Fast SMOTE for Big Data on Apache Spark

One of the main goals of Big Data research, is to find new data mining methods that are able to process large amounts of data in acceptable times. In Big Data classification, as in traditional classification, class imbalance is a common problem that must be addressed, in the case of Big Data also looking for a solution that can be applied in an acceptable execution time. In this paper we present Approx-SMOTE, a parallel implementation of the SMOTE algorithm for the Apache Spark framework. The key difference with the original SMOTE, besides parallelism, is that it uses an approximated version of k-Nearest Neighbor which makes it highly scalable. Although an implementation of SMOTE for Big Data already exists (SMOTE-BD), it uses an exact Nearest Neighbor search, which does not make it entirely scalable. Approx-SMOTE on the other hand is able to achieve up to 30 times faster run times without sacrificing the improved classification performance offered by the original SMOTE.“La Caixa” Foundation, under agreement LCF/PR/PR18/51130007. This work was supported by the Junta de Castilla y León under project BU055P20 and by the Ministry of Science and Innovation of Spain under project PID2020-119894 GB-I00, co-financed through European Union FEDER funds. It also was supported through Consejería de Educación of the Junta de Castilla y León and the European Social Fund through a pre-doctoral grant (EDU/1100/2017). This material is based upon work supported by Google Cloud

Pericardiocentesis emergente en miocardiopericarditis por SARS-CoV-2.

Cardiovascular complications caused by the SARS-CoV-2 virus are associated with high morbidity and mortality. Its early diagnosis can be decisive in the patient's prognosis. We present the case of a patient admitted to the critical care unit for a severe SARS-CoV-2 infection. During admission, she suffered a cardiac arrest caused by cardiac tamponade diagnosed by transthoracic echocardiography, which required an emergent pericardiocentesis. Cardiac magnetic resonance imaging was consistent with viral myocardiopericarditis. Myocardiopericarditis and cardiac tamponade are cardiovascular complications caused by the SARS-CoV-2 virus. Transthoracic ultrasound is a decisive tool in its early diagnosis. Its routine use in critical care units is crucial in the management of these patients.Las complicaciones cardiovasculares producidas por el virus SARS-CoV-2 se asocian a elevada morbimortalidad. Su diagnóstico precoz puede ser decisivo en el pronóstico del paciente.  Presentamos el caso de una paciente que ingresa en la unidad de cuidados críticos por una infección grave por SARS-CoV-2. Durante el ingreso, sufre una parada cardiaca producida por un taponamiento cardiaco diagnosticado por ecocardiografía transtorácica, requiriendo una pericardiocentesis emergente. El diagnóstico por resonancia magnética cardiaca es compatible con miocardiopericarditis vírica. La miocardiopericarditis y el taponamiento cardiaco son complicaciones cardiovasculares producidas por el virus SARS-CoV-2. La ecografía transtorácica es una herramienta decisiva en su diagnóstico precoz. Su uso rutinario en las unidades de cuidados críticos es crucial en el manejo de estos pacientes

Prevalencia de desnutrición en sujetos mayores de 65 años en la Comunidad de Madrid: Estudio DREAM + 65

Introduction: Disease-related malnutrition (DRM) is a frequent community healthcare problem that predominantly affects adults over 65 years of age and increases morbidity and mortality rates, while also decreasing quality of life. Objective: To study the prevalence of DRM in adults over 65 in different community healthcare centres belonging to the Regional Social Welfare Service of the Community of Madrid. Methods: We conducted a cross-sectional study in 33 community healthcare centres in Madrid (6 primary healthcare centres (PC), 9 care centres for the elderly (CE), 9 hospitals (H) and 9 nursing homes (NH)) selected by means of multistage sampling. The variables studied were age, sex, level of dependence according to the Red Cross disability scale, reason for admission and underlying disease, habitat (urban-periurban-rural) and geographical distribution (north-centre-south). The Mini Nutritional Assessment (MNA-screening) was employed as a nutritional screening tool in all the centres. In the case of patients with positive screening (at risk-malnutrition), the MNA-assessment was carried out. Statistical analysis was conducted with the SPSS 21.0 package and included descriptive statistics, Chi-square test and Fisher’s exact test, one-way ANOVA, Kruskal-Wallis test and univariate and multivariate binary logistic regression analysis (LR). Statistical significance was considered to be p < 0.05. Results: A total of 1,103 subjects were recruited (275 PC, 278 CE, 281 H, 269 NH), mean age 79.5 ± 8.4 years (41.2% were males and 58.8% females). The subjects from H and NH had a higher degree of disability (p < 0.001). The overall prevalence of DRM was 10%, 23.3% being at risk of malnutrition, with differences among the 4 types of community healthcare centres (p < 0.001). The univariate LR analysis showed significant differences in the prevalence of malnutrition according to age, sex, degree of dependence, type of community healthcare centre, habitat and geographical zone. Nevertheless, in the multivariate analysis, only the degree of dependence, the type of centre and habitat were statistically significant. Conclusions: The prevalence of DRM in adults over 65 years of age in the Community of Madrid amounts to 10%, with another 23.3% at risk of malnutrition. The variables that were independently related with malnutrition in the multivariate analysis were only the patients’ level of dependence and the type and setting of the community healthcare centreIntroducción: la desnutrición relacionada con la enfermedad (DRE) es un problema sociosanitario frecuente que afecta preferentemente a los mayores de 65 años, que aumenta la morbimortalidad y disminuye la calidad de vida. Objetivo: estudiar la prevalencia de DRE en mayores de 65 años en diferentes centros sociosanitarios del Servicio Regional de Bienestar Social de la Comunidad de Madrid. Métodos: estudio transversal en 33 centros sociosanitarios de Madrid (6 centros de atención primaria [AP], 9 centros de mayores [CM], 9 hospitales [H] y 9 residencias [R]) seleccionados mediante muestreo polietápico. Las variables estudiadas fueron edad, sexo, nivel de dependencia según la escala de incapacidad de la Cruz Roja, motivo de ingreso y enfermedad de base, hábitat (urbano-periurbano-rural) y distribución geográfica (norte-centro-sur). Como herramienta de cribado nutricional se utilizó el Mini Nutritional Assessment (MNA-cribaje) en todos los centros. En los pacientes con cribado positivo (en riesgo-desnutrición) se realizó el MNA-evaluación. El estudio estadístico se realizó con el paquete SSS 21.0 e incluyó estadística descriptiva, test de Chi-cuadrado y prueba exacta de Fisher, ANOVA de un factor, Kruskal-Wallis y análisis de regresión logística (RL) binaria univariante y multivariante. Se consideró significación estadística p < 0,05. Resultados: se reclutaron 1.103 sujetos (275 AP, 278 CM, 281 H, 269 R), edad media de 79,5 ± 8,4 años (41,2% varones, 58,8% mujeres). Los sujetos procedentes de H y R tuvieron un mayor grado de incapacidad (p < 0,001). La prevalencia global de DRE fue del 10%, encontrándose un 23,3% en riesgo de desnutrición, con diferencias entre los cuatro tipos de centros sociosanitarios (p < 0,001). El análisis univariante de RL mostró diferencias significativas en la prevalencia de desnutrición según la edad, sexo, grado de dependencia, tipo de centro sociosanitario, hábitat y zona geográfica. Sin embargo, en el análisis multivariante solo el grado de dependencia, el tipo de centro y el hábitat tuvieron significación estadística. Conclusiones: la prevalencia de DRE en mayores de 65 años en la Comunidad de Madrid es del 10%, encontrándose además un 23,3% en riesgo de desnutrición. Las únicas variables que se relacionaron de forma independiente con la desnutrición en el análisis multivariante fueron el nivel de dependencia de los pacientes y el tipo y hábitat de centro sociosanitari

Factores motivacionales en la elección académica profesional de jóvenes estudiantes de núcleos educativos de la ciudad de Medellín

Maestría en Educación y Desarrollo Humano, Facultad de Ciencias Sociales y Humanas.El presente estudio pretende identificar los factores motivacionales de los jóvenes de grado 11 (Último grado académico de formación básica secundaria en Colombia) de los núcleos educativos 925 y 937 (formas organizativas locales de las instituciones educativas) de la ciudad de Medellín-Colombia y su relación con las áreas de elección profesional. El estudio se realizó con una muestra de 170 estudiantes, seleccionada por conveniencia, de una población total de 971 alumnos que conformaban el total de estudiantes de este grado en nueve instituciones educativas pertenecientes a los núcleos descritos. Se realizó una investigación de tipo no experimental, transversal, con un nivel de estudio descriptivo y correlacional, donde se utilizó el Cuestionario MEVA: Motivaciones, Expectativas y Valores relacionadas con el Aprendizaje. Éste permitió obtener los siguientes resultados significativos que pudieron facilitar la identificación de los tipos de factores motivacionales y la preponderancia de estos respecto de la elección profesional