1,720,965 research outputs found
Characterisation and assessment of an acoustic emitter for the KM3NeT underwater neutrino detector
No full text[ES] KM3NeT es una estructura de investigación instalada en el Mar Mediterráneo que actualmente se encuentra en la primera fase de construcción, entre sus objetivos principales está la detección de neutrinos. Parte del sistema de posicionamiento de KM3NeT está conformado por emisores acústicos (Acoustic Beacons). En este trabajo se documenta la técnica de calibración en laboratorio utilizada en la etapa final del proceso de fabricación de estos sensores. Los resultados presentados están basados en una campaña de medidas de parámetros como el nivel de presión sonora, la directividad y el retardo electro-mecánico-acústico en dos entornos diferentes (tanque y piscina). Los diferentes análisis de estas medidas, técnicas de detección y observación de las distintas señales, ofrecen un estudio detallado del comportamiento individual de cada Acoustic Beacon antes de ser instalado en el telescopio de neutrinos, así como una comparación de resultados en los diferentes entornos.[EN] KM3NeT is a research infrastructure installed in the Mediterranean Sea that is currently in the first phase of construction, among its main objectives is the detection of neutrinos. Part of the KM3NeT positioning system consists of acoustic emitters (Acoustic Beacons). This paper documents the calibration technique used in the final stage of the fabrication process. The results presented are based on a campaign of measurements of parameters such as sound pressure level, directivity and electro-mechanical-acoustic delay in two different environments (laboratory tank and swimming pool). The different analyses of these measurements, detection techniques and observation of the different signals, provide a detailed study of the individual behavior of each Acoustic Beacon before installation, as well as a comparison of results in the different working environments.Quiroz Rangel, CA. (2022). Caracterización y evaluación de un emisor acústico para el detector submarino de neutrinos KM3NeT. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/186498TFG
Estudio de la Contaminación Acústica en la ciudad de Sueca
Get PDFEl crecimiento urbano en grandes ciudades y en pequeños núcleos de población presenta
conflictos como la escasez de servicios, la contaminación medioambiental y un incremento del tráfico
vehicular, siendo éste la más importarte fuente de ruido ambiental según el informe presentado en 2017
por la Agencia Europea de Medio Ambiente. Diversos organismos oficiales e independientes declaran
que la salud de las personas se ve seriamente afectada por el Ruido tanto a nivel fisiológico como
psicológico. Podemos decir que el Ruido se ha convertido en un factor presente en el seno de nuestra
sociedad y una fuente principal de perturbación de la calidad de vida de los ciudadanos. En este trabajo
se realiza un estudio que permite una aproximación a la situación actual del ruido generado por el tráfico
rodado en la ciudad de Sueca. Se ha generado un mapa de ruido de las principales vías que tiene la
población, evidenciando el incumplimiento de la legislación vigente en lo que a contaminación acústica
se refiere. Se realiza un estudio preoperacional y una simulación operacional del efecto que tendría
peatonalizar determinadas calles del casco antiguo. Por último, se proponen una serie de medidas
correctoras que reducirían los niveles ajustándolos a los establecidos por la norma.The urbanization of cities and towns has brought new challenges such as shortage of
resources, the environmental pollution and the increase of traffic congestion. Traffic congestion is the
most important source of ambient noise according to the 2017 research presented by European
Environment Agency. Various official institutions warns the people’s health can be seriously damaged
by noise, both psychologically and physically. It can be stated that high levels of noise have become
significant in our society and are one of the main factors disrupting the quality of human’s life. This
paper studies the levels of noise generated by the road traffic in the town of Sueca. A map of noise
across the main roads of the city has been developed, which shows evidence of a breach of the current
noise legislation in Sueca. A preoperational study and an operational simulation have also been
undertaken to simulate the effect of the pedestrianization of selected streets in the city center. Finally, a
list of measures are proposed in order to reduce the levels of noise to those permitted by the existent
laws.Quiroz Rangel, CA. (2018). Estudio de la Contaminación Acústica en la ciudad de Sueca. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/106975TFG
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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