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Linares, H.; Masana, E.; Ribas, S.J.; Garcia - Gil, M.; Figueras, F.; Aubé, M. |
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Modelling the night sky brightness and light pollution sources of Montsec protected area |
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Journal Article |
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2018 |
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Journal of Quantitative Spectroscopy and Radiative Transfer |
Abbreviated Journal |
Journal of Quantitative Spectroscopy and Radiative Transfer |
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217 |
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178-188 |
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skyglow |
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We proceeded to the modelling of the night sky brightness of Montsec area (north-east of Spain), an astronomical protected area certified as a Starlight Reserve. We have used the hyperspectral version of ILLUMINA, an artificial sky brightness model. Ground based measurements for Montsec and other areas of Catalonia 0015 ; 0016, including both photometric and spectroscopic data, has been used to fit and evaluate the input parameters of the model. In this first modelling attempt, Lleida, the biggest city in the area, has been considered as the unique source of light pollution. In 2014 there was an update of the lighting infrastructure in Lleida. A detailed comparison of the sky brightness before and after the change is shown in order to measure the effects that different kind of lamps can produce. This information could be used to plan for future updates and improvements of the lighting systems in the area. |
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0022-4073 |
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GFZ @ kyba @ |
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1923 |
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Van Tatenhove, A.; Fayet, A.; Watanuki, Y.; Yoda, K.; Shoji, A. |
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Streaked Shearwater Calonectris leucomelas moonlight avoidance in response to low aerial predation pressure, and effects of wind speed and direction on colony attendance |
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Journal Article |
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2018 |
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Marine Ornithology |
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46 |
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177-185 |
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Moonlight |
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Many species of Procellaridae are nocturnal on their breeding grounds, exhibiting reduced activity during fuller moonlight, perhaps to avoid predation by predators that use the full moon to hunt after sunset. Among these nocturnal species, Streaked Shearwaters Calonectris leucomelas have high wing loading and have difficulty taking off—especially with unfavorable wind conditions—thus potentially exacerbating moonlight avoidance. Effects of moonlight and wind conditions on the colony activity of this species, however, is poorly understood. We investigated the phenomenon by counting the departure and arrival of birds, and measuring ambient light intensity, local wind speed, and local wind direction at a breeding colony of Streaked Shearwaters on Awashima Island, Japan. Moon phase and ambient light had no significant effect on the frequency of arrivals or departures. Frequency of departures decreased significantly with increasing wind speed, but no effect was seen on arrivals, and wind direction had no effect on arrivals or departures. Our results indicate that: (1) wind speed may play an important role in Streaked Shearwater takeoff from the colony, and (2) moonlight avoidance is a plastic trait that may diminish in large-bodied shearwaters when few diurnal aerial predators are present. |
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NC @ ehyde3 @ |
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2107 |
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Farkas, T.D.; Kiràly, T.; Pardy, T.; Rang, T.; Rang, G. |
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Title |
Application of power line communication technology in street lighting control |
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Journal Article |
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2018 |
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International Journal of Design & Nature and Ecodynamics |
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Int. J. DNE |
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13 |
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2 |
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176-186 |
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Lighting |
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Rapidly increasing usage of telecommunication systems causes new transmission technologies and networks to emerge. Not only the efficiency, reliability and accessibility of the network are important, but also the economic issues. One cost-effective solution could be power line communication (PLC) technology, which transmits data using the existing electricity infrastructure. The application of this communication technique is an attractive and innovative solution for the realization of smart cities and smart homes. With intelligent control networks, energy savings can be optimized and the operating as well as maintenance costs can be reduced. Since outdoor lighting systems are the major consumers of electricity, to create a modern, energy-efficient city, intelligent street lighting control is needed. This paper provides an overview of power line communication principles including the theoretical background of data communication, modulation techniques, channel access methods, protocols, disturbances and noises. Furthermore, in order to highlight the benefits of a PLC-based street lighting control system, a pilot project will be presented. |
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English |
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1755-7437 |
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NC @ ehyde3 @ |
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2091 |
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Author |
Mulvin, D. |
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Title |
Media Prophylaxis: Night Modes and the Politics of Preventing Harm |
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2018 |
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Information & Culture |
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Information & Culture |
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53 |
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2 |
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175-202 |
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Human Health; Society |
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This article develops the term “media prophylaxis” to analyze the ways technologies are applied to challenges of calibrating one’s body with its environment and as defenses against endemic, human-made harms. In recent years, self-illuminated screens (like those of computers, phones, and tablets) have been identified by scientists, journalists, and concerned individuals as particularly pernicious sources of sleep-disrupting light. By tracing the history of circadian research, the effects of light on sleep patterns, and the recent appearance of software like “f.lux,” Apple’s “Night Shift,” and “Twilight,” this article shows how media-prophylactic technologies can individualize responsibility for preventing harm while simultaneously surfacing otherwise ignored forms of chronic suffering. |
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2164-8034 |
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GFZ @ kyba @ |
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1853 |
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Mulvin, D. |
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Title |
Media Prophylaxis: Night Modes and the Politics of Preventing Harm |
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2018 |
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Information & Culture |
Abbreviated Journal |
Information & Culture |
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53 |
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2 |
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175-202 |
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Keywords |
History; Lighting; Society |
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This article develops the term “media prophylaxis” to analyze the ways technologies are applied to challenges of calibrating one’s body with its environment and as defenses against endemic, human-made harms. In recent years, self-illuminated screens (like those of computers, phones, and tablets) have been identified by scientists, journalists, and concerned individuals as particularly pernicious sources of sleep-disrupting light. By tracing the history of circadian research, the effects of light on sleep patterns, and the recent appearance of software like “f.lux,” Apple’s “Night Shift,” and “Twilight,” this article shows how media-prophylactic technologies can individualize responsibility for preventing harm while simultaneously surfacing otherwise ignored forms of chronic suffering. |
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2164-8034 |
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GFZ @ kyba @ |
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1917 |
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