Browsing by Subject "Fotometria"
Now showing items 1-20 of 29
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A Methodology for investigating dust model performance using synergistic EARLINET/AERONET dust concentration retrievals
(2015-09-04)
Article
Open AccessSystematic measurements of dust concentration profiles at a continental scale were recently made possible by the development of synergistic retrieval algorithms using combined lidar and sun photometer data and the establishment ... -
Aerosol characterization at the Saharan AERONET site Tamanrasset
(2014-01-01)
Article
Open AccessMore than 2 years of columnar atmospheric aerosol measurements (2006-2009) at the Tamanrasset site (22.79 degrees N, 5.53 degrees E, 1377 ma.s.l.), in the heart of the Sahara, are analysed. Aerosol Robotic Network (AERONET) ... -
Aerosol properties of the Eyjafjallajökull ash derived from sun photometer and satellite observations over the Iberian Peninsula
(2012-03-01)
Article
Restricted access - publisher's policyThe Eyjafjallajökull ash that crossed over Spain and Portugal on 6e12 May 2010 has been monitored by a set of operational sun photometer sites within AERONET-RIMA and satellite sensors. The sun photometer observations ... -
Anàlisi fotomètric de les pantalles de projecció de les aules de la FOOT
(Universitat Politècnica de Catalunya, 2015-06-11)
Bachelor thesis
Open AccessLa projecció d’imatges com ajuda complementària de les explicacions dels professors en les aules docents, és un recurs molt utilitzat avui en dia. Una reacció primària quan utilitzem la projecció, és apagar els llums de ... -
Aplicacions de fotogrametria a l'atletisme
(Universitat Politècnica de Catalunya, 2023-10-17)
Bachelor thesis
Open AccessImplementació de tècniques fotogramètriques i rectificació d’imatges per a la vídeo mesura i arbitratge en la pràctica de l’Atletisme. Generació de resultats en concursos de salts horitzontals. Càlcul de diferents paràmetres ... -
Application of a synergetic lidar and sunphotometer algorithm for the characterization of a dust event over Athens, Greece
(2013-11-18)
Article
Open AccessWe present first retrievals of the Lidar-Radiometer Inversion Code (LIRIC), applied on combined lidar and sunphotometer data during a Saharan dust episode over Athens, Greece, on July 20, 2011. A full lidar dataset in terms ... -
Assessment of color quality and energy effciency : new insights for modern lighting. Part I : color quality in general lighting applications. Part II : mesopic photometry and street lighting
(Universitat Politècnica de Catalunya, 2015-02-19)
Doctoral thesis
Open Access
Covenantee: Institut de Recerca en Energia de CatalunyaThis dissertation is divided in two parts: The first one deal with two main characteristics of the light sources for general lighting: Color quality and luminous efficacy. The second one deals with technical aspects of the ... -
Asteroseismology of SZ Lyn using multiband high time resolution photometry from ground and space
(Oxford University Press, 2021-03)
Article
Open AccessWe report the analysis of high temporal resolution ground- and space-based photometric observations of SZ Lyncis, a binary star one of whose components is a high amplitude d Scuti. UBVR photometric observations were obtained ... -
Caracterització espectral i fotomètrica d'una tauleta. Mesura de l'agudesa visual sota diferents temperatures de color de la pantalla
(Universitat Politècnica de Catalunya, 2022-06-21)
Bachelor thesis
Open AccessObjectius: En aquest estudi es realitza el calibratge fotomètric així com el calibratge espectral i cromàtic de la pantalla d’una tauleta Samsung Galaxy Tab A7 SM-T500. A més, s’analitza si la temperatura de color ... -
Caracterización fotométrica de láminas de plástico difusor para el uso en lámparas de LED
(Universitat Politècnica de Catalunya, 2015-06-30)
Bachelor thesis
Restricted access - confidentiality agreement -
Càlcul de la difusió intraocular a partir de la MTF per diferents dimensions de la imatge de doble pas
(Universitat Politècnica de Catalunya, 2014-06-30)
Bachelor thesis
Open AccessActualment existeix molta recerca pel què fa a l’estudi de la qualitat de la imatge retinal ja que, dels passos que intervenen en la visió, és l’únic de moment que podem millorar. Aquesta qualitat es veu afectada per les ... -
Comparació de dispositius mòbils per al seu ús com a luxímetres
(Universitat Politècnica de Catalunya, 2020-07-27)
Bachelor thesis
Open AccessEn l’actualitat, l’avanç de la tecnologia i l’ús dels telèfons intel·ligents ha tingut un gran impacte en la nostra societat. L’aparició d’aplicacions mòbils en les plataformes de distribució digital destinades a la prevenció ... -
Denormalization of visibilities for in-orbit calibration of interferometric radiometers
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-10-31)
Article
Open AccessThis paper reviews the relative calibration of an interferometric radiometer taking into account the experimental results of the first batch of receivers developed in the frame of the European Space Agency's Soil Moisture ... -
Desarrollo de un test para las placas de fotometría de un analizador clínico en la empresa Biosystems
(Universitat Politècnica de Catalunya, 2024-01-29)
Bachelor thesis
Restricted access - confidentiality agreement
Covenantee: Biosystems -
Development and evaluation of the BSC-DREAM8b dust regional model over Northern Africa, the Mediterranean and the Middle East
(2012-06-12)
Article
Open AccessThe BSC-DREAM8b model and its predecessor are analysed in terms of aerosol optical depth (AOD) for 2004 over Northern Africa, the Mediterranean and the Middle East. We discuss the model performance and we test and analyse ... -
Direct assessment of the sensitivity drift of SQM sensors installed outdoors
(2021-04-16)
Article
Open AccessLong-term monitoring of the evolution of the artificial night sky brightness is a key tool for developing science-informed public policies and assessing the efficacy of light pollution mitigation measures. Detecting the ... -
EARLINET dust observations vs. BSC-DREAM8b modeled profiles: 12-year-long systematic comparison at Potenza, Italy
(2014-01-01)
Article
Open AccessIn this paper, we report the first systematic comparison of 12-year modeled dust extinction profiles vs. Raman lidar measurements. We use the BSC-DREAM8b model, one of the most widely used dust regional models in the ... -
Ground-based observations of 337 nm and 777 nm optical emissions produced by lightning
(John Wiley & sons, 2024-05-11)
Article
Open AccessLightning flashes were observed in Barrancabermeja (Colombia) by two photometers centered at 337 and 777 nm wavelengths, a high-speed camera, and the Colombia Lightning Mapping Array. Both optical and VHF radio emissions ... -
Hubble Space Telescope survey of Magellanic Cloud star clusters: photometry and astrometry of 113 clusters and early results
(EDP Sciences, 2023-04-01)
Article
Open AccessIn the past few years, we have undertaken an extensive investigation of star clusters and their stellar populations in the Large and Small Magellanic Clouds (LMC and SMC) based on archival images collected with the Hubble ... -
Light pollution offshore: Zenithal sky glow measurements in the mediterranean coastal waters
(2018-05)
Article
Open AccessLight pollution is a worldwide phenomenon whose consequences for the natural environment and the human health are being intensively studied nowadays. Most published studies address issues related to light pollution inland. ...
