Free Surface RANSE Analisys Around Fixed Fully Appended

This paper presents results of Free Surface RANSE (Reynolds Average Navier Stokes Equations) simulations of the flow around a MedCup TP52. Appendages forces calculations are important to know their hydrodynamic characteristics when they work jointly. In the ETSIN towing tank, some tests had begun to measure hydrodynamics forces in each appendage that allowed evaluate the forces distribution in different conditions. StarCCM+ has been used to compute drag, lift and wave elevation. It is shown how the CFD analysis has been prepared and the results obtained in these simulations comparing experimental with numerical results and the grid influence on it. Finally, it is observed that with limited resources, reasonable good results could be obtained

Optimal modularity and memory capacity of neural reservoirs

The neural network is a powerful computing framework that has been exploited by biological evolution and by humans for solving diverse problems. Although the computational capabilities of neural networks are determined by their structure, the current understanding of the relationships between a neural network's architecture and function is still primitive. Here we reveal that neural network's modular architecture plays a vital role in determining the neural dynamics and memory performance of the network of threshold neurons. In particular, we demonstrate that there exists an optimal modularity for memory performance, where a balance between local cohesion and global connectivity is established, allowing optimally modular networks to remember longer. Our results suggest that insights from dynamical analysis of neural networks and information spreading processes can be leveraged to better design neural networks and may shed light on the brain's modular organization

Influence of compositionally induced defects on the vibrational properties of device grade Cu2ZnSnSe4 absorbers for kesterite based solar cells

This work presents a detailed analysis of the impact of compositionally induced defects on the vibrational properties of Cu2ZnSnSe4 absorbers for kesterite based solar cells. Systematic changes in the intensity of the E and B modes located around the 170, 220, and 250 cm-1 frequency regions, which involve mostly cation vibrations, were observed and analyzed in relation to the occurrence of different kinds of defect clusters involving VCu, ZnCu, ZnSn, CuZn, and SnZn point defects. Additional changes are also interpreted in terms of the appearance of SnSe, ZnSe, and CuSe-like contributions at the 185 and 250 cm-1 spectral regions, respectively. The sensitivity of the Raman measurements to the presence of these kinds of defects corroborates the potential of Raman scattering for point defect assessment in these systems. © 2015 AIP Publishing LLCPeer ReviewedPostprint (published version

Sailing Yacht Rudder Behaviour

Las prestaciones de un velero de regatas se estiman por medio de los Programas de Predicción de Velocidad (VPP) que incluyen las características de estabilidad y modelos aero e hidrodinámico del barco. Para el cálculo de las fuerzas en los apéndices es importante conocer sus características hidrodinámicas cuando trabajan conjuntamente. En el Canal de Ensayos de la ETSIN se ha iniciado una serie de ensayos para la medida separada de las fuerzas hidrodinámicas en cada apéndice que permitirá evaluar el reparto de fuerzas en diferentes condiciones de navegación así como profundizar en las interacciones entre carena, quilla y timón. El proyecto se complementa con un análisis numérico del problema con un código comercial de tipo viscoso (CFX). Benefits in a racing sailboat are considered by means of Velocity Prediction Programs (VPP) that includes the stability and aero-hydrodynamic characteristics of the boat. Appendages forces calculations are important to know their hydrodynamic characteristics when they work jointly. In the ETSIN towing tank, some tests have begun to measure hydrodynamics forces in each appendage that will allow evaluating the distribution of forces in different conditions of navigation as well as for deepening in the interactions between hull, keel and rudder. The project is complemented with a numerical analysis of the problem with a commercial viscous code (CFX)

Older adults and sport and physical activity professionals in Spain

Presence of monitors in physical activities and sports practiced by adults older than 64 years of age in Spain is analyzed in this research. The objective of this study is to determine the existence of monitors in relation to the sociodemographic features of older adults, the size of municipalities, the activities practiced, and the organizations where they are performed. The methodology used included a cross-sectional survey applied to a sample of older adults in Spain. The most relevant conclusions are that the presence of monitors in physical activities and sports practiced by older adults is dominant (63.8%), hence, their importance, and that the presence of monitors is higher for women (81.3%) than for men (37.5%). In addition, it is concluded that the bigger the municipality the higher the tendency to have more instructors. Regarding the type of activity, wide diversification is obtained; finally, there is a larger presence of monitors in sports entities (87.5%) and nursing homes (79.5%)

Barriers and Triggers to Adopting a Participatory Model for Conservation in the Cordillera Azul National Park, Peru

Participatory approaches to the conservation management of protected areas are being implemented worldwide due to cost-effective and moral reasons. However, given the wide spectrum of participation, levels of participation across the conservation management process might vary from one stage to another. This study presents a unique analysis of how participation varies through the conservation management process, and provides the first step towards creating multi-variate models containing key determinants of perceived participation. This thesis is based on research in the Cordillera Azul National Park, a relatively new protected area in the Peruvian Amazon, where I interviewed some of the main stakeholders and conducted a questionnaire in three communities of the Park's buffer zone. My main findings are: levels of participation did indeed vary across different stages of the Park's management. Also, the perceived benefits and costs of the National Park together with the attitudes towards conservation were influencing the perceived responsibility for the Park's management. Thus, I suggest that if managers want to increase community participation in the protected area's management, they might need to focus on identifying those community members with particular attitudes and concentrate on the benefits and costs of conservation

Reliability and measurement error of tensiomyography to assess mechanical muscle function: A systematic review

Interest in studying mechanical skeletal muscle function through tensiomyography (TMG) has increased in recent years. This systematic review aimed to (a) report the reliability and measurement error of all TMG parameters [i.e., maximum radial displacement of the muscle belly (Dm), contraction time (Tc), delay time (Td), half-relaxation time (1/2 Tr), and sustained contraction time (Ts)] and (b) to provide critical reflection on how to perform accurate and appropriate measurements for informing clinicians, exercise professionals, and researchers. A comprehensive literature search was performed of the Pubmed, Scopus, Science Direct and Cochrane databases up to July 2017. Eight studies were included in this systematic review. Meta-analysis could not be carried out due to the low quality of the evidence of some studies evaluated. Overall, the review of the nine studies involving 158 participants revealed high relative reliability [intra-class correlation (ICC)] for Dm (0.91-0.99); moderate to high ICC for Ts (0.80-0.96), Tc (0.70-0.98), and 1/2 Tr (0.77-0.93); and low to high ICC for Td (0.60-0.98), independently of the evaluated muscles. Additionally, absolute reliability [coefficient of variation (CV)] was low for all TMG parameters except for 1/2 Tr (CV = >20%) while measurement error indexes were high for this parameter. In conclusion, this study indicates that three of the TMG parameters (Dm, Td and Tc) are highly reliable, whereas 1/2 Tr demonstrate insufficient reliability, and thus should not be used in future studies

A novel R-package graphic user interface for the analysis of metabonomic profiles

Background Analysis of the plethora of metabolites found in the NMR spectra of biological fluids or tissues requires data complexity to be simplified. We present a graphical user interface (GUI) for NMR-based metabonomic analysis. The "Metabonomic Package" has been developed for metabonomics research as open-source software and uses the R statistical libraries. /Results The package offers the following options: Raw 1-dimensional spectra processing: phase, baseline correction and normalization. Importing processed spectra. Including/excluding spectral ranges, optional binning and bucketing, detection and alignment of peaks. Sorting of metabolites based on their ability to discriminate, metabolite selection, and outlier identification. Multivariate unsupervised analysis: principal components analysis (PCA). Multivariate supervised analysis: partial least squares (PLS), linear discriminant analysis (LDA), k-nearest neighbor classification. Neural networks. Visualization and overlapping of spectra. Plot values of the chemical shift position for different samples. Furthermore, the "Metabonomic" GUI includes a console to enable other kinds of analyses and to take advantage of all R statistical tools. /Conclusion We made complex multivariate analysis user-friendly for both experienced and novice users, which could help to expand the use of NMR-based metabonomics

“Uso de la mascarilla respiratoria N95 por el profesional de enfermería del área de emergencia en el HNDAC 2016”

El objetivo del presente estudio, fue determinar el uso de la mascarilla respiratoria N95 por el profesional de enfermería en el área de Emergencia del HNDAC en el 2016. Material y Método. Se utilizó el método descriptivo, y como muestra 50 enfermeras de las cuales participaron 40. La técnica utilizada fue la observación, y el instrumento fue una lista de chequeo, que fue aplicado previa firma del consentimiento informado, Resultados. Del 100%(40), 37,5%(15) cumplen y 62,5% (25) no cumplen con usar respiradores N95. Conclusiones. La mayoría de enfermeras no cumplen con usar mascarillas N95 para prevenir enfermedades, los enfermeros que utilizan mascarilla cumplen con el cambio de esta pues se la retiran si entra en contacto con fluidos corporales del paciente, o si esta se ensucia o se moja; también se observa que la mayoría que si utilizan las mascarillas hacen uso correcto de los respiradores porque utilizan una técnica adecuada colocando la zona amplia del respirador por debajo de su mentón y cubriendo la nariz con la zona estrecha, también fijan bien los sujetadores, uno por encima de su cabeza (parte superior de la nuca) y el otro en su cuello, ajustando la mascarilla hasta que presente comodidad, y a la vez que quede de forma hermética

POLÍTICAS DE EDUCACIÓN INCLUSIVA EN ESPAÑA: UNA CUESTIÓN PARADOJICA DE DERECHOS PARA LA EQUIDAD

El presente artículo tiene por objeto realizar un breve recorrido sobre las políticas de educación inclusiva en España. Finalmente se presentarán los logros acontecidos y un análisis crítico al respecto a lo largo de este proceso así como algunas sugerencias para la mejora