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Author | Jiang, W.; He, G.; Long, T.; Guo, H.; Yin, R.; Leng, W.; Liu, H.; Wang, G. | ||||
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Potentiality of Using Luojia 1-01 Nighttime Light Imagery to Investigate Artificial Light Pollution | Type | Journal Article | ||
Year | 2018 | Publication | Sensors | Abbreviated Journal | Sensors |
Volume | 18 | Issue | 9 | Pages | 2900 |
Keywords | Remote Sensing; Instrumentation | ||||
Abstract | The successful launch of Luojia 1-01 complements the existing nighttime light data with a high spatial resolution of 130 m. This paper is the first study to assess the potential of using Luojia 1-01 nighttime light imagery for investigating artificial light pollution. Eight Luojia 1-01 images were selected to conduct geometric correction. Then, the ability of Luojia 1-01 to detect artificial light pollution was assessed from three aspects, including the comparison between Luojia 1-01 and the Suomi National Polar-Orbiting Partnership Visible Infrared Imaging Radiometer Suite (NPP-VIIRS), the source of artificial light pollution and the patterns of urban light pollution. Moreover, the advantages and limitations of Luojia 1-01 were discussed. The results showed the following: (1) Luojia 1-01 can detect a higher dynamic range and capture the finer spatial details of artificial nighttime light. (2) The averages of the artificial light brightness were different between various land use types. The brightness of the artificial light pollution of airports, streets, and commercial services is high, while dark areas include farmland and rivers. (3) The light pollution patterns of four cities decreased away from the urban core and the total light pollution is highly related to the economic development. Our findings confirm that Luojia 1-01 can be effectively used to investigate artificial light pollution. Some limitations of Luojia 1-01, including its spectral range, radiometric calibration and the effects of clouds and moonlight, should be researched in future studies. | ||||
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ISSN | 1424-8220 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | GFZ @ kyba @ | Serial | 1997 | ||
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Author | Smith, H.M.; Neaves, L.E.; Divljan, A. | ||||
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Predation on cicadas by an Australian Flying-fox Pteropus poliocephalus based on DNA evidence | Type | Journal Article | ||
Year | 2018 | Publication | Australian Zoologist | Abbreviated Journal | Australian Zoologist |
Volume | in press | Issue | Pages | ||
Keywords | Animals | ||||
Abstract | Historically, reports of insectivory in family Pteropodidae have largely been anecdotal and thought to be an incidental corollary of flying-foxes feeding on plant products. More recent direct observations of flying-foxes catching and consuming insects, as well as advances in techniques that increase our ability to detect dietary items, suggest that this behaviour may be deliberate and more common than previously thought. Usually, multiple insects are consumed, but it appears that flying-foxes hunt and eat them one at a time. However, we have collected and photographed oral ejecta pellets under trees with high flying-fox activity, some containing evidence of multiple masticated insects. Further genetic analysis proved that these pellets came from Grey-headed Flying-foxes Pteropus poliocephalus. We propose that flying-foxes use an array of insect feeding strategies, most likely in response to variation in insect abundance and activity, as well as abiotic factors such as light and temperature. | ||||
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ISSN | 0067-2238 | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | GFZ @ kyba @ | Serial | 2148 | ||
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Author | Kozaki, Tomoaki; Taketomi, Ryunosuke; Hidaka ,Yuki; Ida, Nagisa; Yasuda, Takeo | ||||
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Preventive Effect of Morning Bluish LED Light on Light-induced Melatonin Suppression at Night | Type | Journal Article | ||
Year | 2018 | Publication | Journal of Science and Technology in Lighting | Abbreviated Journal | |
Volume | 41 | Issue | Pages | 206-210 | |
Keywords | Human Health | ||||
Abstract | Bright nocturnal light has been known to suppress melatonin secretion. However, bright light exposure during daytime might reduce light-induced melatonin suppression (LIMS) at night. This study aims to evaluate the effect of high correlated color temperature LED light during daytime on LIMS. Male participants were exposed to different light conditions for 3 h in the morning (09:00â??12:00). The light conditions were dim light (<10 lx), 125 lx high correlated color temperature (CCT) LED light, and 250 lx high CCT LED light. The subjects were then exposed to bright light (white light, 300 lx) for 1.5 h at night (01:00â??02:30). Saliva samples were taken before (01:00) and after (02:30) exposure for evaluation of melatonin secretion. There were no significant differences in melatonin secretion before and after night-time light exposure on the 125 lx and 250 lx morning light conditions. Since these light intensities were almost equal to those in our previous study, the high CCT LED light might be appropriate for certain work places (e.g., hospitals and underground spaces), contributing to the reduction of our health risk and also saving energy. | ||||
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Notes | Approved | no | |||
Call Number | LoNNe @ kyba @ | Serial | 1785 | ||
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Author | Manning, R., Newman, P., Barber, J., Monz, C., Hallo, J., & Lawson, S. | ||||
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Principles for Studying and Managing Natural Quiet and Natural Darkness in National Parks and Other Protected Areas | Type | Journal Article | ||
Year | 2018 | Publication | The George Wright Forum | Abbreviated Journal | |
Volume | 35 | Issue | 3 | Pages | 350-362 |
Keywords | Conservation; Planning; Regulation | ||||
Abstract | A substantial body of research on natural quiet and natural darkness in national parks, and protected areas more broadly, has been reported in the scientific and professional literature in recent years. However, this literature is widely scattered over many academic and professional journals that cover both the natural and social sciences. To help integrate and synthesize this body of work, we surveyed this diverse literature and collected representative examples in a book (Manning et al. 2018). We conclude our book with a series of principles that we have distilled to help guide park managers to protect natural quiet and natural darkness. This paper presents those principles. Much of our book focuses on national parks in the United States, and in the remainder of this paper the phrase “the national parks” refers to them. But we feel that the principles we have derived from our review of the scientific and professional literature on natural quiet and natural darkness apply equally well to a variety of parks and protected areas in the United States and elsewhere. Natural quiet is generally defined as the sounds of nature uninterrupted by human-caused noise, and natural darkness is darkness unaffected by human-caused light. It is important to note that natural quiet and natural darkness do not necessarily mean absolute quiet or darkness, as the natural world often generates sounds of its own (e.g., birds calling, wind blowing, rivers rushing) and has sources of illumination (e.g., the glow of celestial bodies and the fluorescence of some plants and animals). |
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Notes | Approved | no | |||
Call Number | IDA @ intern @ | Serial | 2297 | ||
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Author | Babadi, S.; Ramirez-Inguiez, R.; Boutaleb, T.; Mallick, T. | ||||
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Producing uniform illumination within a rectangular area by using a nonimaging optic | Type | Journal Article | ||
Year | 2018 | Publication | Applied Optics | Abbreviated Journal | Appl. Opt. |
Volume | 57 | Issue | 31 | Pages | 9357 |
Keywords | Lighting | ||||
Abstract | This paper proposes a new design method to create a novel optical element to generate uniform illumination within a rectangular area. Based on this model, an illuminated area is irradiated by two sets of rays; the first one irradiates the target plane after refraction from the top section of the lens, and the second one irradiates from the reflection at the side profile of the lens and then from refraction at the top part of the lens. The results show that a uniformity of over 90% can be achieved. | ||||
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ISSN | 1559-128X | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | GFZ @ kyba @ | Serial | 2046 | ||
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