Diseño y acondicionamiento acústico y electroacústico de una sala de proyecciones en 3D

Este proyecto está orientado al diseño y el acondicionamiento de una sala de cine siguiendo las normas establecidas por el SMPTE. El primer paso a realizar será el diseño de la sala en el cual habrá que tener en cuenta la distribución de los asientos dentro de la misma, el dimensionado de la pantalla que servirá para establecer la forma y dimensiones del recinto, así como la correcta ubicación del proyector. Posteriormente se realizará el acondicionamiento acústico del cine, con la elección de los diferentes materiales que permitan la obtención de un tiempo de reverberación óptimo. A continuación se procederá a la selección de los equipos electroacústicos más adecuados y a su colocación a lo largo de la sala para posteriormente realizar un estudio de todos los parámetros de esta para garantizar la perfecta escucha dentro de la misma. Se elegirán, al igual que se ha hecho con los elementos electroacústicos, los equipos de video específicos, teniendo en cuenta el sistema de proyección 3D utilizado y se procederá a su instalación dentro de la sala. Se indicará de forma independiente cual será el esquema de conexionado correspondiente a cada una de las partes, tanto de audio como de video. Todos los equipos y parámetros ajustables de la sala, tanto de audio como de video, se realizaran siguiendo las recomendaciones establecidas por el SMPTE para una correcta visión y escucha, así como también el diseño de la sala. Para llevar a cabo todo lo anteriormente descrito se utilizara el programa de simulación EASE 4.3 con él que se ajustaran los parámetros más significativos para verificar que la sala cumple con las condiciones de escucha que determina la norma. Todo esto irá acompañado de un presupuesto detallado de cada uno de los equipos y materiales utilizados, así como de los costes derivados de la mano de obra. Se adjuntarán también los planos de la sala donde se indicarán todas las medidas establecidas a lo largo del proyecto. Para la realización de estos se utilizara el programa de diseño Google SkechUp. Por último se facilitarán las hojas de características de cada uno de los equipos instalados en la sala para conocer sus especificaciones y modo de funcionamiento. Abstract This project is orientated at designing and conditioning a cinema according to standards set by the SMPTE. First of all, the cinema hall needs to be designed, taking into consideration seat distribution and screen dimension, in order to establish the shape and dimensions of the room and the correct location for the projector. Later the acoustic conditioning of the cinema is covered, with the choice of appropriate materials in order to permit an optimum reverberation time. The next step is the selection of the most appropriate electro-acoustic equipment and its positioning throughout the room. A study is then carried out of all the parameters to ensure perfect hearing in the cinema. Then the specific video equipment is chosen, bearing in mind the 3D projection system used and is installed in the theatre. A wiring diagram is indicated for each element used, for both audio and video. All equipment and adjustable parameters of the room, both audio and video, are made according to the recommendations established by the SMPTE for correct viewing and listening, as is the design of the cinema. To carry out the steps described above the EASE 4.3 simulation program is used. This program adjusts all significant parameters to verify that the room complies with the listening conditions determined by the standard. A detailed budget is included for all equipment and materials used, as well as the labour costs. Plans of the room, showing all measurements taken during the project are indicated. This is done using the Google SkechUp program. Finally data sheets are provided for each piece of equipment installed in the room detailing specifications and operating mode

Impact of signal quantization on the performance of RFI mitigation algorithms

Radio Frequency Interference (RFI) is currently a major problem in Communications and Earth Observation, but it is even more dramatic in Microwave Radiometry because of the low power levels of the received signals. Its impact has been attested in several Earth Observation missions. On-board mitigation systems are becoming a requirement to detect and remove affected measurements, increasing thus radiometric accuracy and spatial coverage. However, RFI mitigation methods have not been tested yet in the context of some particular radiometer topologies, which rely on the use of coarsely quantized streams of data. In this study, the impact of quantization and sampling in the performance of several known RFI mitigation algorithms is studied under different conditions. It will be demonstrated that in the presence of clipping, quantization changes fundamentally the time-frequency properties of the contaminated signal, strongly impairing the performance of most mitigation methods. Important design considerations are derived from this analysis that must be taken into account when defining the architecture of future instruments. In particular, the use of Automatic Gain Control (AGC) systems is proposed, and its limitations are discussedPeer ReviewedPostprint (published version

On the detection of RFI through the correlation anomaly at different time lags

Microwave radiometers can be considerably affected by Radio Frequency Interference (RFI). These man-made interference conceal the underlying natural signal, preventing the retrieval of geophysical variables. Adopting on-board detection and mitigation techniques is a requirement to reduce the impact of RFI. Several families of RFI detection algorithms have been developed over the last years (e.g. [1]–[4]). In this work, a new detection technique is proposed and its performance analyzed. It is based in the distortion of the shape of the cross-correlation function at lags different from zero under the presence of RFI. Its performance is compared to other common RFI mitigation algorithms. Proposed methods' performance is found to surpass other common algorithms such as signal Kurtosis, while presenting some convenient properties for its practical application in correlation and synthetic aperture radiometers.Peer ReviewedPostprint (author's final draft

Observation and modeling of interrupted pattern coarsening: surface nanostructuring by ion erosion

4 pages, 3 figures.-- PACS nrs.: 68.35.Ct, 05.45.-a, 79.20.Rf, 81.16.Rf.We report the experimental observation of interrupted coarsening for surface self-organized nanostructuring by ion erosion. Analysis of the target surface by atomic force microscopy allows us to describe quantitatively this intriguing type of pattern dynamics through a continuum equation put forward in different contexts across a wide range of length scales. The ensuing predictions can thus be consistently extended to other experimental conditions in our system. Our results illustrate the occurrence of nonequilibrium systems in which pattern formation, coarsening, and kinetic roughening appear, each of these behaviors being associated with its own spatiotemporal range.This work has been supported by Grant Nos. CSD2008-0023, CSD2007-00010, and FIS2009-12964- C05-01, -04 (MICINN, Spain), and CCG08-CSIC/MAT- 3457 (CAM, Spain).Publicad

Propiedades psicométricas del instrumento para la evaluación del Bullying (INSEBULL) en adolescentes de la Provincia de Huamanga 2020

La presente información tuvo como objetivo principal determinar las propiedades psicométricas del Instrumento para la Evaluación del Bullying (Insebull) en adolescentes de la ciudad de Huamanga, 2020. La metodología utilizada fue de tipo tecnológico por ello se orientará a los logros psicométricos y de diseño no experimental. La muestra seleccionada fue de 376 adolescentes, pertenecientes a una institución educativa de Ayacucho, a través de un tipo de muestreo estratificado. El instrumento utilizado fue El Instrumento para la Evaluación del Bullying (INSEBULL), que contiene 35 ítems y 8 dimensiones, estas son: Intimidación, Victimización, Red social, Solución Moral, Falta de integración social, Constatación del maltrato, Identificación participantes acoso escolar, Vulnerabilidad escolar ante el abuso

Producción de plantas de melina (Gmelina arborea Roxb.) con dos tratamientos pregerminativos, en fundas plásticas a nivel de vivero en el cantón Buena Fé, provincia de Los Ríos

La presente investigación propone: producir plantas de melina (Gmelina arbórea roxb.) con dos tratamientos pregerminativos, en fundas plásticas a nivel de vivero en el cantón Buena Fé, provincia de Los Ríos, el diseño empleado fue un Diseño Completo al Azar con cuatro repeticiones, las comparaciones de las medias se realizaron utilizando la prueba de Duncan mediante el uso del SofwareInfostad, dando con resultados valores significativos al tratamiento T1, de un 61,5% de emergencia de semillas (remojo en agua al ambiente durante 72 horas) así mismo se notó que el crecimiento de las plantas tanto en su diámetro de tallo, altura de plantas, y número de hojas, este incremento fue en casi un 60% de diferencia en la toma de datos realizadas a los 30 y 60 días, y valores en cero para los tratamientos en los que se sumergió en agua caliente a 73°C (T2= 3 minutos, T3= 6 minutos, T4= 9 minutos) expresando una notoria diferencia y eficiencia en la germinación, concluyendo como mejor práctica pregerminativa al (T1) sobre los demás, recomendando se analice el ensayo practico bajo menores tiempos de sumersión en agua caliente. Se concluye que el mejor tratamiento pregerminativo fue mantener la semilla en remojo en agua al ambiente durante 72 horas (T1), ya que presentó el mayor porcentaje de germinación (61,25%).The present research was carried out to produce plants Melina (Gmelina arbórea Roxb) with two pregerminative treatments, in plastic nursery level in Buena Fe canton, Los Rios province, the statistical design used was a Complex Random Design with four replications, the comparisons of means were performed using Duncan´s test using on Software Infostad, resulting significant values for T1, The 61.25% of a seed emergency (soaking in water for 72 hours at ambient) likewise variable increase data plant was taken both in stem diameter, plant height and number of leaves, these increases were almost 60% difference in data collection conducted at 30and 60 days, the root variable volume (RV) is measured subsequently to the aforementioned decision data, this was at 60 days after planting, resulting in 4.63 cc (VR), and zero values for the treatments which was immersed in hot water at 73°C,of the follows way (T2 = 3 minutes, T3 = 6 minutes, T4 = 9 minutes), they presented a significant difference in germination compared to (T1) in which effective results are obtained, these being significant in evaluation treatments in hot water, finishing the best pregerminative practice was at (T1) on the other treatments recommending use (T1)for practical work Melina production of nursery plants, and to analyze the practical test under submersion times under hot water

Un luz en la oscuridad: Analisis historico - teologico del proceso de la Reflexion Eclesial Cubana (REC) y el Encuentro Nacional Eclesial Cubano (ENEC)

Thesis advisor: Rafael LucianiThesis advisor: Margaret Eletta GuiderThesis (STL) — Boston College, 2020.Submitted to: Boston College. School of Theology and Ministry.Discipline: Sacred Theology

Development of a critical structure state alarm system based on the instrumentation of the Botafoc breakwater nº 8 caisson

Balearic Port Authority has developed an instrumentation system for the #8 caisson of the Botafoc breakwater that integrates 12 pressure sensors located at three surfaces, two in contact with the sea water and another with the bottom. This design was completed with an inertial system that measures the angular velocities and the accelerations over the three Cartesian axes. Consequently, the system measures actions (pressures) and reactions (movements and accelerations) experimented by the caisson, due to sea waves and/or other service loads. R+D department of the Port Authority and Polytechnic University of Madrid are working on two directions, the development of new theories on vertical breakwater design that go beyond Goda and Sainflou, and on the creation of a real-time critical structure alarm system, based on the instrumentation installed. This alarm system has two main parts: the instrumentation itself that collects data and processes it on real-time (the data processing compares the pressure law suffered by the caisson in every step process with the design critical state of the caisson, in this case the Goda pressure law for a 6.5 m wave), giving a security coefficient that points out the risk level on real-time; and the alarm system consisting of a monitoring panel located in the Port Control Center that shows the risk level and advises in case of an incidental evacuation of this critical portuary installation