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Author Marquenie, J.M.; Donners, M.; Poot, H.; Steckel W.; de Witt, B.
Title Bird-Friendly Light Sources: Adapting the Spectral Composition of Artificial Lighting Type Magazine Article
Year 2013 Publication (up) IEEE Industry Application Magazine Abbreviated Journal
Volume Issue Pages 56-62
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Call Number LoNNe @ schroer @ Serial 1088
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Author Li, X.; Chen, F.; Chen, X.
Title Satellite-Observed Nighttime Light Variation as Evidence for Global Armed Conflicts Type Journal Article
Year 2013 Publication (up) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Abbreviated Journal IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing
Volume 6 Issue 5 Pages 2302-2315
Keywords Remote Sensing; Society
Abstract The objective of this research is to investigate the potential of nighttime light images, acquired with Defense Meteorological Satellite Program Operational Linescan System (DMSP-OLS), in evaluating global armed conflicts. To achieve this purpose, we assessed the relationship between armed conflicts and the satellite-observed nighttime light variation over 159 countries through annual composites of the nighttime light images. Firstly, a light ratio index was developed to reduce the data inconsistency of annual nighttime light images during 1992-2010. Then 12 countries were selected as examples for a primary investigation, and we found the outbreak of a war can reduce the light and the ceasefire can increase the light from the remote sensing images, which indicates armed conflict events always have significant impact on the nighttime light. Based on this assertion, a nighttime light variation index (NLVI) was developed to quantify the variation of the time series nighttime light. Then using conditional probability analysis, the probability of a country suffering from armed conflicts increases with increase of NLVI. Particularly, when the NLVI value is in a very high level as defined, 80% of the countries have experienced armed conflicts. Furthermore, using correlation analysis, the number of global armed conflicts is highly correlated with the global NLVI in temporal dimension, with a correlation coefficient larger than 0.77. In summary, the potential of nighttime light images in armed conflict evaluation is extended from a regional scale to a global scale by this study.
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ISSN 1939-1404 ISBN Medium
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Call Number GFZ @ kyba @ Serial 1876
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Author Femia, N.; Fortunato, M.; Vitelli, M.
Title Light-to-Light: PV-Fed LED Lighting Systems Type Journal Article
Year 2013 Publication (up) IEEE Transactions on Power Electronics Abbreviated Journal IEEE Trans. Power Electron.
Volume 28 Issue 8 Pages 4063-4073
Keywords light-to-light systems; outdoor lighting; lighting technology; LED; LED lighting; photovoltaics; PV
Abstract This paper discusses the principle of operation, dynamic modeling, and control design for light-to-light (LtL) systems, whose aim is to directly convert the sun irradiation into artificial light. The system discussed in this paper is composed by a photovoltaic (PV) panel, an LED array, a dc-dc converter dedicated to the maximum power point tracking of the PV panel and a dc-dc converter dedicated to drive the LEDs array. A system controller is also included, whose goal is to ensure the matching between the maximum available PV power and the LED power by means of a low-frequency LEDs dimming. An experimental design example is discussed to illustrate the functionalities of the LtL system.
Address Dipt. di Ing. Elettron. e Ing. Inf., Univ. of Salerno, Salerno, Italy
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ISSN 0885-8993 ISBN Medium
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Call Number IDA @ john @ Serial 331
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Author De Miguel, A.; Zamorano, J. M.; Gómez Castaño, J.; Ocaña, F.; Pascual Ramírez, S.; López Cayuela, M. A.,; et al.
Title ). Contaminaci{ó}n lum{í}nica en Espa{ñ}a 2012: Light pollution in Spain 2012 Type Journal Article
Year 2013 Publication (up) In Highlights of Spanish Astrophysics VII Abbreviated Journal
Volume 1 Issue Pages 956
Keywords Remote Sensing
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Call Number LoNNe @ kagoburian @ Serial 926
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Author Zamorano, J.; de Miguel, A.; Alfaro, E.; Martínez-Delgado, D.; Ocaña, F.; Nievas, M.; mez Castaño, J.
Title NIXNOX project: Enjoy the dark skies of Spain Type Journal Article
Year 2013 Publication (up) In Highlights of Spanish Astrophysics VII Abbreviated Journal
Volume 1 Issue Pages 962–970
Keywords Remote Sensing
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Call Number LoNNe @ kagoburian @ Serial 982
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