| Records |
| Author |
Fotios, S.; Yao, Q. |
| Title |
The association between correlated colour temperature and scotopic/photopic ratio |
Type |
Journal Article |
| Year |
2018 |
Publication |
Lighting Research & Technology |
Abbreviated Journal |
Lighting Research & Technology |
| Volume |
35 |
Issue |
10 |
Pages |
1365-1374 |
| Keywords |
Vision; Lighting |
| Abstract |
The scotopic/photopic ratio (S/P) is a parameter that may be considered in the design of road lighting. This paper compares the S/P ratio and correlated colour temperature (CCT) for 297 light source spectra identified in IES Technical Memorandum TM-30-15 to test the assumption that higher S/P ratios demand higher CCTs. The results suggest that, for a given lamp type, there is a strong association between S/P ratio and CCT, and hence that for a given CCT only a small variation in S/P ratio is available. However, the results also suggest that a larger variation in S/P ratio is possible if the lighting designer is able to consider a change in lamp type. |
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| ISSN |
1477-1535 |
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| Call Number |
GFZ @ kyba @ |
Serial |
1954 |
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| Author |
Patel, J.S.; Radetsky, L.; Rea, M.S. |
| Title |
The Value of Red Light at Night for Increasing Basil Yield |
Type |
Journal Article |
| Year |
2018 |
Publication |
Canadian Journal of Plant Science |
Abbreviated Journal |
Can. J. Plant Sci. |
| Volume |
98 |
Issue |
6 |
Pages |
1321-1330 |
| Keywords |
Plants |
| Abstract |
Sweet basil (<i>Ocimum basilicum L.</i>) is primarily used for culinary purposes, but it is also used in the fragrance and medicinal industries. In the last few years, global sweet basil production has been significantly impacted by downy mildew caused by <i>Peronospora belbahrii</i>. Nighttime exposure to red light has been shown to inhibit sporulation of <i>P. belbahrii</i>. The objective of this study was to determine if nighttime exposure to red light from light-emitting diodes (LEDs; λ<sub>max</sub> = 625 nm) could increase plant growth (plant height and leaf size) and yield (number and weight of leaves) in basil plants. In two sets of greenhouse experiments, red light was applied at a photosynthetic photon flux density (PPFD) of 60 µmol m<sup>-2</sup> s<sup>-1</sup> during the otherwise dark night for 10 hours (from 20:00 to 06:00). The results demonstrate that exposure to red light at night can increase the number of basil leaves per plant, plant height, leaf size (length and width), and leaf fresh and dry weight, compared to plants in darkness at night. The addition of incremental red light at night has the potential to be cost-effective for fresh organic basil production in controlled environments. |
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0008-4220 |
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GFZ @ kyba @ |
Serial |
1955 |
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| Author |
Rea, M. |
| Title |
The what and the where of vision lighting research |
Type |
Journal Article |
| Year |
2018 |
Publication |
Lighting Research & Technology |
Abbreviated Journal |
Lighting Research & Technology |
| Volume |
50 |
Issue |
1 |
Pages |
14-37 |
| Keywords |
Vision; Review |
| Abstract |
Vision neuroscience research and vision lighting research have historically run on parallel paths. The former discipline is primarily interested in understanding the basic neurophysiological and biophysical characteristics of the visual system, while the latter is primarily interested in understanding the best means for designing and engineering perceptions of architectural spaces and for improving safety and productivity of indoor and outdoor applications. This review frames vision lighting research conducted over the past century in terms of current vision neuroscience research, illustrating the similarities in the two research paths. It is also argued that visual lighting research could be more impactful on society at large if the basic framework established by vision neuroscience were considered in planning and conducting applications research. Specifically, studies aimed at understanding the luminous environment in terms of the what and the where of visual subsystems would provide the foundation for developing unique and highly valuable lighting applications and standards. |
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1477-1535 |
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GFZ @ kyba @ |
Serial |
1956 |
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Miller, S.D.; Straka III, W.C.; Yue, J.; Seaman, C.J.; Xu, S.; Elvidge, C.D.; Hoffmann, L.; Azeem, I. |
| Title |
The Dark Side of Hurricane Matthew: Unique Perspectives from the VIIRS Day/Night Band |
Type |
Journal Article |
| Year |
2018 |
Publication |
Bulletin of the American Meteorological Society |
Abbreviated Journal |
Bull. Amer. Meteor. Soc. |
| Volume |
99 |
Issue |
12 |
Pages |
2561-2574 |
| Keywords |
remote sensing |
| Abstract |
Hurricane Matthew (28 Sep – 9 October 2016) was perhaps the most infamous storm of the 2016 Atlantic hurricane season, claiming over 600 lives and causing over $15 billion USD in damages across the central Caribbean and southeastern U.S. seaboard. Research surrounding Matthew and its many noteworthy meteorological characteristics (e.g., rapid intensification into the southernmost Category 5 hurricane in the Atlantic basin on record, strong lightning and sprite production, and unusual cloud morphology) is ongoing. Satellite remote sensing typically plays an important role in the forecasting and study of hurricanes, providing a top-down perspective on storms developing over the remote and inherently data sparse tropical oceans. In this regard, a relative newcomer among the suite of satellite observations useful for tropical cyclone monitoring and research is the Visible/Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB), a sensor flying onboard the NOAA/NASA Suomi National Polar-orbiting Partnership (SNPP) satellite. Unlike conventional instruments, the DNB's sensitivity to extremely low levels of visible/near-infrared light offers new insight on storm properties and impacts. Here, we chronicle Matthew’s path of destruction and peer through the DNB’s looking glass of low-light visible observations, including lightning connected to sprite formation, modulation of the atmospheric nightglow by storm-generated gravity waves, and widespread power outages. Collected without moonlight, these examples showcase the wealth of unique information present in DNB nocturnal low-light observations without moonlight, and their potential to complement traditional satellite measurements of tropical storms worldwide. |
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0003-0007 |
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GFZ @ kyba @ |
Serial |
1959 |
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| Author |
Ahn, H.; Lee, S.; Jo, E. |
| Title |
Assessment on Lighting Management Zones for Light pollution in Gwangju Metropolitan City |
Type |
Journal Article |
| Year |
2018 |
Publication |
한국태양에너지학회 학술대회논문집 |
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Issue |
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Pages |
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| Keywords |
Lighting; Planning |
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GFZ @ kyba @ |
Serial |
1960 |
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