| Records |
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Juntunen, E.; Tetri, E.; Tapaninen, O.; Yrjänä S.; Kondratyev, V; . Sitomaniemi, A.; Siirtola, H.; Sarjanoja, E.M.; Aikio, J.; Heikkinen, V |
| Title |
A smart LED luminaire for energy savings in pedestrian road lighting. |
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Journal Article |
| Year |
2013 |
Publication |
Lighting Research and Technology |
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| Volume |
47 |
Issue |
1 |
Pages |
103-115 |
| Keywords |
Lighting |
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LoNNe @ kagoburian @ |
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639 |
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Jørgensen, L. D., Tambo, T., & Xydis, G. |
| Title |
An efficiency evaluation of radar‐based obstruction lights controlling at a wind turbine test site |
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Journal Article |
| Year |
2019 |
Publication |
Wind Energy |
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| Volume |
22 |
Issue |
4 |
Pages |
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| Keywords |
Lighting; Public Safety; Planning |
| Abstract |
In this study, an obstruction lights controlling (OLC) system based on a Terma SCANTER 5000 radar has been installed at a test centre for large wind turbines. The objective of this study was to evaluate the efficiency of the OLC system and to improve this efficiency by introducing new technological features. Once the first assessment had been carried out, new software with improved tracking functionalities was installed to the radar. With the new software, a second assessment was made to compare the new performance to the old one. To analyse the tracks, geographic information system (GIS) tools have been used. A new MATLAB script was developed to automate the assessment as well as to gather data on the tracks. These data sets were used to improve the system performance by introducing a radar cross section (RCS)/speed filter. The outcome of the study is a filter that can be implemented on the radar system to improve the efficiency of the system and reduce the time that obstruction lights need to be on for by 62.59%, without compromising the integrity of the system. |
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IDA @ intern @ |
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2298 |
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Kamrowski, R.L.; Sutton, S.G.; Tobin, R.C.; Hamann, M. |
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Potential applicability of persuasive communication to light-glow reduction efforts: a case study of marine turtle conservation |
Type |
Journal Article |
| Year |
2014 |
Publication |
Environmental Management |
Abbreviated Journal |
Environ Manage |
| Volume |
54 |
Issue |
3 |
Pages |
583-595 |
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Society; Adolescent; Adult; Aged; Aged, 80 and over; Animals; *Conservation of Natural Resources; Culture; Female; Humans; *Lighting; Male; Middle Aged; Persuasive Communication; Public Opinion; Queensland; Questionnaires; *Turtles; Young Adult |
| Abstract |
Artificial lighting along coastlines poses a significant threat to marine turtles due to the importance of light for their natural orientation at the nesting beach. Effective lighting management requires widespread support and participation, yet engaging the public with light reduction initiatives is difficult because benefits associated with artificial lighting are deeply entrenched within modern society. We present a case study from Queensland, Australia, where an active light-glow reduction campaign has been in place since 2008 to protect nesting turtles. Semi-structured questionnaires explored community beliefs about reducing light and evaluated the potential for using persuasive communication techniques based on the theory of planned behavior (TPB) to increase engagement with light reduction. Respondents (n = 352) had moderate to strong intentions to reduce light. TPB variables explained a significant proportion of variance in intention (multiple regression: R (2) = 0.54-0.69, P < 0.001), but adding a personal norm variable improved the model (R (2) = 0.73-0.79, P < 0.001). Significant differences in belief strength between campaign compliers and non-compliers suggest that targeting the beliefs reducing light leads to “increased protection of local turtles” (P < 0.01) and/or “benefits to the local economy” (P < 0.05), in combination with an appeal to personal norms, would produce the strongest persuasion potential for future communications. Selective legislation and commitment strategies may be further useful strategies to increase community light reduction. As artificial light continues to gain attention as a pollutant, our methods and findings will be of interest to anyone needing to manage public artificial lighting. |
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School of Earth and Environmental Sciences, James Cook University, Townsville, QLD, 4811, Australia, ruth.kamrowski(at)my.jcu.edu.au |
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Springer |
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English |
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English |
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0364-152X |
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PMID:24957580 |
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IDA @ john @ |
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1283 |
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| Author |
Kantermann, T. |
| Title |
Circadian biology: sleep-styles shaped by light-styles |
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Journal Article |
| Year |
2013 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
| Volume |
23 |
Issue |
16 |
Pages |
R689-90 |
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Human Health; Circadian Clocks/*radiation effects; Female; Humans; *Lighting; Male; *Photoperiod; *Sunlight |
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Light and darkness are the main time cues synchronising all biological clocks to the external environment. This little understood evolutionary phenomenon is called circadian entrainment. A new study illuminates our understanding of how modern light- and lifestyles compromise circadian entrainment and impact our biological clocks. |
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Chronobiology – Centre for Behaviour and Neurosciences, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands. thomas@kantermann.de |
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English |
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0960-9822 |
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PMID:23968925 |
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LoNNe @ christopher.kyba @ |
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501 |
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Kayumov, L.; Casper, R.F.; Hawa, R.J.; Perelman, B.; Chung, S.A.; Sokalsky, S.; Shapiro, C.M. |
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Blocking low-wavelength light prevents nocturnal melatonin suppression with no adverse effect on performance during simulated shift work |
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Journal Article |
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2005 |
Publication |
The Journal of Clinical Endocrinology and Metabolism |
Abbreviated Journal |
J Clin Endocrinol Metab |
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90 |
Issue |
5 |
Pages |
2755-2761 |
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Lighting; Adult; *Circadian Rhythm; Female; Humans; *Light; Male; Melatonin/*secretion; *Work Schedule Tolerance |
| Abstract |
Decreases in melatonin production in human and animals are known to be caused by environmental lighting, especially short-wavelength lighting (between 470 and 525 nm). We investigated the novel hypothesis that the use of goggles with selective exclusion of all wavelengths less than 530 nm could prevent the suppression of melatonin in bright-light conditions during a simulated shift-work experiment. Salivary melatonin levels were measured under dim (<5 lux), bright (800 lux), and filtered (800 lux) light at hourly intervals between 2000 and 0800 h in 11 healthy young males and eight females (mean age, 24.7 +/- 4.6 yr). The measurements were performed during three nonconsecutive nights over a 2-wk period. Subjective sleepiness was measured by self-report scales, whereas objective performance was assessed with the Continuous Performance Test. All subjects demonstrated preserved melatonin levels in filtered light similar to their dim-light secretion profile. Unfiltered bright light drastically suppressed melatonin production. Normalization of endogenous melatonin production while wearing goggles did not impair measures of performance, subjective sleepiness, or alertness. |
| Address |
Sleep Research Laboratory, Department of Psychiatry, University Health Network, ECW 3D-035, 399 Bathurst Street, Toronto, Ontario, Canada M5T 2S8. lkayumov@uhnres.utoronto.ca |
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English |
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0021-972X |
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PMID:15713707 |
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no |
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LoNNe @ kagoburian @ |
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640 |
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