625 research outputs found
Sobre un tipo de cuento popular especialmente raro en el Occidente europeo
En número dedicado a: La provincia de Albacet
Violence perception in Mexico related to subjective and social well-being
El presente estudio evalúa las actitudes hacia la violencia social en México y las contrasta con medidas de satisfacción como son; el bienestar subjetivo desde la perspectiva cognitiva de satisfacción con la vida (Diener, 1980) y el bienestar social (Keyes, 1998). Para evaluar las actitudes frente a la violencia social, exploramos la Escala de Actitudes ante la Violencia Social (Navarro, 2010). Muestra de 101 participantes (77 M, 24 H) del estado de Colima, México. Las tres subescalas de las Actitudes ante la Violencia Social muestran consistencia interna y correlacionan de manera negativa en relación al Bienestar Subjetivo y Bienestar Social. Los resultados indican efectos negativos generados por la percepción de violencia pero sobre todo incongruencia entre una elevada alarma social ante la violencia y una relativamente baja reacción conductual. Las medias en satisfacción con la vida y en las subescalas de bienestar social son relativamente elevadas como se viene observando en estudios anteriores sobre estos constructos en la población mexicana.The present study evaluates attitudes towards social violence in Mexico and contrasts them with satisfaction measures, such as; satisfaction with life (Diener, 1980) and social well-being (Keyes, 1998). To evaluate attitudes originated from violence we explored the attitudes towards social violence scale (Navarro, 2010). Sample 101 subjects (77 W, 24 M) residents of the state of Colima, Mexico. The three subscales composing the attitudes originated from social violence scale show internal consistence and correlate negatively to subjective and social well-being. These results indicate some negative effects of attitudes originated from violence. There is no congruence between high social alarm and low behavioral responses. Satisfaction with life and social well-being are relatively high as usual in Mexican population
Consumo de alimentos de la población sonorense: tradición versus internacionalización
Las comidas tradicionales sonorenses y las comidas étnicas internacionales ya forman parte del bagaje gastronómico del consumidor regional. En esta investigación se busca conocer cuáles son las características y preferencias de consumo de ambos tipos de comida, a fin de establecer el posible efecto de desplazamiento de una sobre la otra. Para alcanzar este objetivo se ha efectuado un análisis de tipo exploratorio con base en un cuestionario de gustos y preferencias gastronómicas dirigido a consumidores. También se apoya en entrevistas a profundidad con amas de casa para identificar las comidas que se reconocen como típicas dentro del acervo culinario sonorense y aquellas que se consideran de reciente introducción. El estudio conforma uno de los primeros trabajos que analizan, en forma conjunta, las comidas étnicas internacionales y las comidas tradicionales sonorenses
Reconstruction of noisy signals by minimization of non-convex functionals
Non-convex functionals have shown sharper results in signal reconstruction as compared to convex ones, although the existence of a minimum has not been established in general. This paper addresses the study of a general class of either convex or non-convex functionals for denoising signals which combines two general terms for fitting and smoothing purposes, respectively. The first one measures how close a signal is to the original noisy signal. The second term aims at removing noise while preserving some expected characteristics in the true signal such as edges and fine details. A theoretical proof of the existence of a minimum for functionals of this class is presented. The main merit of this result is to show the existence of minimizer for a large family of non-convex functionals.The rst author gratefully acknowledges many helpful discussion with
Professor H. Frid from IMPA. Also thanks the Promeps Project that support
this work. The second author is grateful to the Spanish Ministry of Economy
and Competitiveness for the grant TIN2013-46522-P, and to the Generalitat
Valenciana for the grant PROMETEOII/2014/062
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FPGA-based multi-sensor relative navigation in space: Preliminary analysis in the framework of the I3DS H2020 project
The Horizon 2020 Integrated 3D Sensors (I3DS) project brings together the following entities throughout Europe: THALES ALENIA SPACE - France / Italy / UK / Spain, SINTEF (Norway), TERMA (Denmark), COSINE (Netherlands), PIAP Space (Poland), HERTZ Systems (Poland), and Cranfield University (UK). I3DS is co-funded under the Horizon 2020 EU research and development program and is part of the Strategic Research Cluster on Space Robotics Technologies. The ambition of I3DS is to produce a standardised modular Inspector Sensor Suite (INSES) for autonomous orbital and planetary applications for future space missions. Orbital applications encompass activities such as on-orbit servicing and repair, space rendezvous and docking, collision avoidance and active debris removal (ADR). Simultaneous localisation and surface mapping (SLAM) for planetary exploration and general navigation in an unknown environment for scientific purposes can be considered in planetary applications. These envisaged space applications can be tackled by exploiting the flexibility, high performance and long product life of FPGAs. Conventional FPGAs are subject to Single Event Upsets (SEU) due to space radiation, causing their failure. Therefore, space-graded FPGAs, such as those developed by Xilinx, are targeted within the I3DS project. Currently, the main use of the FPGA within the development of this robust end-to-end multi-sensor suite is for navigation and data preprocessing. The aim of this paper is to assess the capabilities of FPGAs to carry out complex operations, such as running navigation algorithms for space applications. The motivation for the development of the on-board software architecture is as follows: raw data, acquired from the various sensors – including, among others, a High Resolution camera, a stereo camera and a LiDAR – is pre-processed to ensure the provision of robust and optimised inputs to 3D navigation algorithms. Noise reduction and conversion into suitable formats for the successful application of navigation algorithms are therefore the main aims of the data pre-processing. Some techniques adopted in this phase include outlier rejection and data dimensionality reduction for large point clouds, e.g. from LiDAR, and geometric and radiometric correction of the images from the cameras. The pre-processed data will then feed state-of-the-art relative navigation algorithms. Some of the proposed navigation algorithms include Generalised Iterative Closest Point (GICP) for dense 3D point clouds, relative positioning with fiducial markers, and visual odometry. The system environment for the preliminary operation is a test-bench setup formed by a standard desktop computer and a non-space-graded FGA (Xilinx UltraZed-EG FPGA). The choice of FPGA was based on the similarity of this board to other spacegraded ones also provided by Xilinx. Experimental tests on the algorithms are being performed in the framework of the validation campaign for the I3DS project. Preliminary results indicate that the data pre-processing can be efficiently carried out on the FPGA board
Self-pulsing dynamics of ultrasound in a magnetoacoustic resonator
A theoretical model of parametric magnetostrictive generator of ultrasound is
considered, taking into account magnetic and magnetoacoustic nonlinearities.
The stability and temporal dynamics of the system is analized with standard
techniques revealing that, for a given set of parameters, the model presents a
homoclinic or saddle--loop bifurcation, which predicts that the ultrasound is
emitted in the form of pulses or spikes with arbitrarily low frequency.Comment: 5 pages, 5 figure
Metapsicología de doce protagónicos: una trayectoria de Galdós
Tesis doctoral inédita de la Universidad Autónoma de Madrid, Facultad de Filosofía y Letras, Departamento de Filología Espaǫla. Fecha de lectura: 13-03-2009
Analyse préliminaire de la situation et des perspectives de la culture du haricot de Lima (Phaseolus lunatus L.) sur la Côte péruvienne (Vallées d'Ica, Pisco et Casma)
Preliminary analysis of the situation and prospects of the Lima bean crop (Phaseolus lunatus L.) in the Peruvian Coast (Valleys of Ica, Pisco and Casma). The Lima bean, Phaseolus lunatus L., is a crop of regional importance on the Peruvian Coast. Within the framework of a collaborative project between the ""faculté universitaire des Sciences agronomiques'"" in Gembloux and the ""Universidad Nacional Agraria La Molina"" in Lima, we carried out a diagnosis of this speculation in the Ica, Pisco and Casma valleys in order to define the constraints which limit crop yields and to suggest improvements within the reach of the smallholders. To achieve these objectives we carried out a formal survey, centred on the Lima bean crop and smallholder relations with the agro-socio-economical environment, and an informal survey, centred on the studied farm systems. To complete these data we met some key informants belonging to all the sectors in contact with agriculture. This study allowed us to identify five undersystems in the farm systems of the Peruvian Coastal Valleys. These undersystems are: cotton, commercial food crops, self-subsistence food crops, livestock and fruit trees. The Lima bean usually belongs to the commercial food crops undersystem. There are two types of constraints. External constraints affect all the components of the farm system and are mainly: end of State support to agriculture, liberalization of trade and unavailability of credit. Internal constraints directly affect the Lima bean crop. Low income leads to a deficiency in pest control and adequate crop management. The Lima bean is also in competition with other components of the system such as cotton and common bean
La psicoterapia como herramienta para la adherencia a recomendaciones alimenticias en pacientes con diabetes mellitus tipo II
El propósito de este trabajo es que los pacientes con diabetes mellitus tipo 2, logren por medio de la psicoterapia, mayor adherencia a las recomendaciones alimenticias necesarias para el mantenimiento y mejora de su calidad de vida.
El estudio se llevó acabo con dos consultantes con diagnóstico de diabetes tipo 2, uno a quien además del tratamiento médico y las recomendaciones nutricionales se le acompañó con psicoterapia de tipo Cognitivo Conductual, y el otro consultante se le dio la consulta nutricional. Luego se compararon los resultados entre ellos para identificar si con la psicoterapia se puede lograr mayor apego del consultante a las recomendaciones nutricionales.
Se utilizaron el instrumento Diabetes 39 para valorar la calidad de vida, la escala clinimétrica para el diagnóstico de depresión y el control diario de glucemia, que es un instrumento diseñado exprofeso para este estudio.
Con los resultados fue posible comprobar que con la aplicación de la psicoterapia cognitivo conductual se logró que el consultante lograra modificar sus hábitos alimenticios y de esta manera obtuviera óptimos resultados que contribuyen a tener una mejor calidad de vida. Mientras que en el paciente que no fue atendido con psicoterapia, la adherencia a las recomendaciones fue mucho menor y por lo tanto los resultados no fueron los óptimos.ITESO, A. C
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