New records of Orchids from Morocco

The exploration of the Rif Valley (Morocco) during 2010 revealed the presence of some new taxa and records from Morocco. The new taxa are: Orchis langei subsp. magrebensis and Ophrys neglecta var. riphaea. Ophrys neglecta var. neglecta and Ophrys numida have been detected for the first time in Morocco

Teachers’ conceptions about the nature of technology and the Science-Technology-Society-Environment relationships

Este trabajo pretende, en primer lugar, cuestionar extendidas concepciones de la tecnología que la presentan como mera aplicación de los conocimientos científicos y que están contribuyendo a una imagen distorsionada y empobrecida de la naturaleza de la ciencia y la tecnología y, consecuentemente, al desinterés e incluso rechazo hacia su estudio. En segundo lugar se presentan los resultados de una investigación cuyo objetivo es analizar en qué medida dichas concepciones afectan incluso al profesorado encargado de la alfabetización tecnológica. Finalmente se aborda la transformación de dichas concepciones.This paper aims, firstly, to question widespread conceptions of technology, presented as a simple application of scientific knowledge, which are contributing to a distorted and impoverished view of the nature of science and technology and, therefore, to students’ lack of interest and even rejection of the study of techno-scientific subjects. Secondly, we present an analysis of how these conceptions affect even teachers in charge of technological literacy. Finally, we contemplate how to overcome these conceptions

Concepciones docentes acerca de la naturaleza de la tecnología y de las relaciones Ciencia, Tecnología, Sociedad y Ambiente en la educación tecnológica.

This paper aims, firstly, to question widespread conceptions of technology, presented as a simple application of scientific knowledge, which are contributing to a distorted and impoverished view of the nature of science and technology and, therefore, to students' lack of interest and even rejection of the study of techno-scientific subjects. Secondly, we present an analysis of how these conceptions affect teachers in charge of technological literacy. Finally, we contemplate how to overcome these conception

Implementación de herramientas de diseño en App Designer de MATLAB para la fase de diseño conceptual de una aeronave: Estudio y análisis estructural y de pesos de la aeronave y Estudio y análisis de actuaciones de la aeronave

El objetivo de este trabajo fin de máster consiste en la implementación de las herramientas informáticas Academic Structures Pro App y Academic Performance Pro App en la interfaz gráfica App Designer de Matlab. Estos programas surgen de la evolución de sus anteriores versiones implementadas en la interfaz gráfica Guide de Matlab, Academic Structures Pro y Academic Perfomance Pro. Las principales motivaciones de las actualizaciones de las herramientas informáticas son la mejora de prestaciones que ofrece la nueva interfaz gráfica App Designer, ya que la interfaz gráfica de Guide está obsoleta, solucionando así problemas de incompatibilidades según la versión de Matlab instalada, y ciertas correcciones de errores y mejoras en ambos programas. Estos programas surgieron como herramientas académicas informáticas de apoyo para los alumnos que cursan la asignatura Cálculo de Aeronaves, impartida en el Grado en Ingeniería Aeroespacial y del Máster en Ingenería Aeronáutica en la Universidad de Sevilla. Ambas herramientas son empleadas para el diseño preliminar de una aeronave. Academic Structures Pro App se emplea para el análisis y estudio estructural de la aeronave mientras que Academic Performance Pro App se emplea para el análisis y estudio de actuaciones de la aeronave.The aim of this master's thesis consists of the implementation of the Academic Structures Pro App and Academic Performance Pro App software in the Matlab App Designer graphical interface. These programs arise from the evolution of their previous versions implemented in the Matlab Guide graphical interface, Academic Structures Pro and Academic Performance Pro. The main reasons for the updates of these appicationes are the improvement of features offered by the new App Designer graphical interface, since Guide's graphical interface is obsolete, thus solving incompatibility problems according to the version of Matlab installed, and certain bug fixes and some improvements in both programs. These programs emerged as academic support computer tools for students taking the Aircraft Calculation course, taught in the Bachelor's Degree in Aerospace Engineering and the Master's Degree in Aeronautical Engineering at the University of Seville. Both applications are used for the preliminary design of an aircraft. Academic Structures Pro App is used for the analysis and structural study of the aircraft while Academic Performance Pro App is used for the analysis and study of aircraft performances.Universidad de Sevilla. Máster en Ingeniería Aeronáutic

41CA measurement with low energy accelerator mass spectrometry (leams) at the Centro Nacional de Aceleradores.

The accelerator mass spectrometry (AMS) technique, developed 40 years ago for 14C dating, was soon used to measure other long-lived radionuclides. One of the radionuclides measured by AMS since these early years is 41Ca and for a variety of applications. Some of these applications are: the calculation of the terrestrial age of meteorites, the study of nuclear reactions of astrophysical interest, the understanding of the calcium metabolism, and the characterization of low-level nuclear waste. The main challenge in 41Ca AMS is dealing with the interference caused by its stable isobar, 41K. This interference is reduced by using calcium 2uoride (CaF2) samples and the extraction of the (CaF3)- ion. At large AMS facilities, besides, 41K ions can be discriminated from 41Ca ions using different detection techniques based on the energy loss dependence on the atomic number. The 41Ca measurement with low energy AMS systems, like the 1 MV system at the Centro Nacional de Aceleradores (CNA), is quite challenging, since this discrimination is not possible. Nevertheless, the 41K contribution can be estimated and, therefore, corrected, thanks to the sequential detection of the other stable isotope of potassium, 39K (K-correction). Although the sensitivity achieved in 41Ca AMS at low energies is 3-4 orders of magnitude lower than those achieved at larger facilities, it allows the competitive measurements for biomedical applications, and the characterization of concrete samples from nuclear reactor bioshields. Since 41Ca AMS at low energies is limited to the estimation of 41K interference, it is advisable to study the different ways toward the production of this interference. Some factors related to it have been studied in different experiments performed with the 1 MV AMS system at CNA (SARA) and the 600 kV AMS system at the ETH Laboratory of Ion Beam Physics in Zurich (TANDY). For instance, we could demonstrate that 41K can be injected also as the (41K57Fe)- molecular ion. As a consequence, 41K interference is dependent on the materials used during the sample pressing. We also proved that, even when both 41K/40Ca and 39K/40Ca ratios change over time, the relation between both, 41K/39K remains constant. Therefore, the Kcorrection is a robust method to estimate the 41K interference. The information provided from these experiments has contributed to the setting up and optimization of the 41Ca measurements with the SARA system at CNA, which was the main goal of this thesis. The results are not only useful for measurements at our system, but also for other very similar HVE 1 MV AMS systems. Several tests have been performed during these years to study and optimize all the performance parameters of 41Ca measurements with this system: ionization eWciency, transmission and destruction of the molecular background in the stripper, ion optical transport, detection eWciency, and 1nal sensitivity. Mixing the CaF2 samples with silver powder, our ion source produces stable (40CaF3)- currents between 50 and 150 nA. In comparison with the TANDY system at ETH, the slightly lower transmission for the 2+ state through the helium stripper (40% at SARA, 50% at TANDY) is compensated by the better optical transmission in the high energy sector (90-100% at SARA, 80-85% at TANDY). This is due to the quadrupole triplet which refocus the beam at the exit of our accelerator. The capabilities of both systems for 41Ca AMS are equivalent. 41Ca/40Ca backgrounds found in the system, in the 10-12 range, allow, among other applications, the characterization of the 41Ca content in the bioshield from nuclear reactors. Within the colaboration between the Spanish radioactive waste management agency (ENRESA) and the AMS Research group at CNA, a detailed study of the 41Ca spatial distribution in the bioshield of the Jos´e Cabrera nuclear power plant has been performed. A radiochemical method for concrete samples have been developed in order to deal with the relatively large number of samples involved in this study. The measured 41Ca/40Ca ratios in the areas of maximum neutron 2uence were on the 10-6 range, while they get down to the 10-10 range in regions far from the reactor cavity. While the 41Ca/40Ca attenuation pro1le follows an ideal behavior in some areas, it does not in other parts where the in2uence of diffused thermal neutrons is higher

Implementación de funcionalidades para sistema de detección, clasificación y seguimiento de vehículos y peatones basado en información LiDAR

En el mundo actual, los accidentes relacionados con los automóviles y la conducción suponen una de las principales causas de muerte en el primer mundo. Por encima de otros factores externos, el factor humano es sin duda el más influyente como su causa; por ello, surge la necesidad de un progresivo desarrollo e incorporación de sistemas de automatización y control inteligentes en los llamados vehículos autónomos. La presente memoria recoge la implementación de varias funciones relacionadas con la visión por ordenador aplicada a vehículos inteligentes, y están divididas en dos partes. La primera parte consiste en la obtención de imágenes a modo de vista de pájaro utilizando datos de nube de puntos obtenidos de sensores LiDAR (Light Detection and Ranging, es decir, visión y medición mediante luz), permitiendo un mejor estandarizado y procesado de la información entre distintos tipos de dispositivo. La segunda consiste en un sistema de tracking, que consiste en la asignación de un número de identificación a cada agente (peatón, ciclista, vehículo, etc.) detectado y mantenerlo en el tiempo. Además, se presentan resultados para probar la utilidad y fiabilidad de las funciones desarrolladas, los cuales han sido obtenidos en entornos reales, cuya exigencia e impredecibilidad son superiores a situaciones llamadas “de laboratorio”, donde se controlan diversas variables o elementos del sistemaIn the current world, driving accidents are one of the main death causes in the first world. Above other external factors, the human factor is without a doubt the most influential as their cause; that’s why it arises a necessity of a progressive development and incorporation of systems of automation and intelligent control in the so-called autonomous vehicles. The following report comprises the implementation of several functions related with computer vision applied to autonomous vehicles, which are divided in two parts. The first one consists on the obtaining of images in birdview fashion using point cloud data obtained from LiDAR sensors (Light Detection and Ranging), which allows for a better standardizing and processing of the information between several types of device. The second one consists on a tracking system, which assigns an ID to every detected agent (pedestrian, cyclist, vehicle, etc.) and maintains it throughout time. Furthermore, results are presented to prove the utility and reliability of the developed functions, which have been obtained in real environments, whose levels of exigence and randomness are higher than in “laboratory situations”, where several variables or elements are controlled.Ingeniería Electrónica Industrial y Automátic

Imagen de la tecnología transmitida por los textos de educación tecnológica

Cuestionamos en este artículo la transmisión por los textos de tecnología de una visión simplista y socialmente neutra de la tecnología como "ciencia aplicada", ignorando, o tratando muy superficialmente, las complejas relaciones ciencia-tecnología-sociedad-ambiente (CTSA)

La filiación divina un aporte esencial para la humanización de la salud

Teniendo en cuenta que la salud hace parte del sistema de seguridad social colombiana, traemos a colación algunas consecuencias de los cambios realizados a través del tiempo, los cuales relegan la integridad de la persona que es obligada a experimentar las falencias visibles producto del deficiente presupuesto que el sistema de la salud presta a los habitantes de nuestro país. Por ello, se hace indispensable una transformación del actual contexto deshumanizado del Sistema de Salud, es allí donde la fe cristiana ha necesitado ejercer, cada vez más, una presencia significativa en medio de tantas realidades deshumanizantes convertidas en focos de injusticia y marginación. especialmente, en los enfermos,en contraposición a estos antecedentes se hace propicia la humanización de la salud. Por tal razón, esta investigación, es concebida como la acción evangelizados de todo el pueblo de Dios, comprometido en promover, cuidar, dignificar y defender la vida, haciendo presente la misión liberadora y salvífica de Jesús en el mundo de la salud. Es importante decir, la experiencia de fe que se da en el seguimiento de Cristo, el resultado en el auténtico servicio a la persona, en su carácter solidario y transformador, el cual precisa ciertos criterios teológicos enriquecidos desde la cristología y la antropología teológica como dogmatismo centrado en el estudio del hombre y su condición humana a la luz de las sagradas escrituras, ello permite que la pastoral de la salud, como explicación de la inseparable fidelidad que Dios, verificada en la categoría filiación divina, establece una relación con Jesucristo quien brinda el privilegio de ser salvo.Given that health is part of the system of Colombian social security, we bring some consequences of changes over time, which relegate the integrity of the person who is forced to experience the flaws visible product of poor budget health system provides to the people of our country. Therefore, a transformation of the current dehumanized context of the health system is essential, that is where the Christian faith has needed exercise, increasingly significant presence among many dehumanizing realities turned into hotbeds of injustice and marginalization, especially, in patients,as opposed to this background the humanization of health is encouraged ago. For this reason, this research is conceived as the evangelizing action of the whole people of God. committed to promoting, caring, dignify and defend life, making this the liberating and salvific mission of Jesus in the world of health. It is important to say, the experience of faith which is given in the following of Christ, the result in the authentic service to the person, their solidarity and transformative character, which requires certain theological criteria enriched from Christology and theological anthropology as dogmatism focused on the study of man and human in the light of the scriptures condition, it allows the ministry of health, an explanation of the inseparable fidelity to God, verified in the category divine filiation, establishes a relationship with Jesus Christ who gives the privilege of being saved.Teólogo (a)Pregrad