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Bryant, J.M.; Hake, H.G. |
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Title |
A decision support system for assessment of street lighting tenders based on energy performance indicators and environmental criteria: Overview, methodology and case study |
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Journal Article |
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Year |
1911 |
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University of Illinois Bulletin |
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9 |
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8 |
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Bulletin No. 51 |
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Keywords |
Lighting; Energy; Economics; Planning |
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It is the purpose of this bulletin to make available information concerning street illumination. The suggestion which led to this compilation came from the many inquiries received by the Electrical Engineering Department each year from those interested in framing ordinances permitting corporations or individuals to operate street lighting systems. An attempt has been made to present this information in such a form as to be readily understood by the general public, without requiring any special technical knowledge. The data have been compiled from reliable sources, and checked in many instances by tests conducted by the writers. |
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University of Illinois at Urbana Champaign, College of Engineering |
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GFZ @ kyba @ |
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2739 |
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Author |
Bullock, B.; McGlashan, E.M.; Burns, A.C.; Lu, B.S.; Cain, S.W. |
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Title |
Traits related to bipolar disorder are associated with an increased post-illumination pupil response |
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Journal Article |
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Year |
2019 |
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Psychiatry Research |
Abbreviated Journal |
Psychiatry Res |
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278 |
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35-41 |
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Human Health |
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Mood states in bipolar disorder appear to be closely linked to changes in sleep and circadian function. It has been suggested that hypersensitivity of the circadian system to light may be a trait vulnerability for bipolar disorder. Healthy persons with emotional-behavioural traits associated with bipolar disorder also appear to exhibit problems with circadian rhythms, which may be associated with individual differences in light sensitivity. This study investigated the melanopsin-driven post-illumination pupil response (PIPR) in relation to emotional-behavioural traits associated with bipolar disorder (measured with the General Behavior Inventory) in a non-clinical group (n=61). An increased PIPR was associated with increased bipolar disorder-related traits. Specifically, the hypomania scale of the General Behavior Inventory was associated with an increased post-blue PIPR. Further, both the full hypomania and shortened '7 Up' scales were significantly predicted by PIPR, after age, sex and depressive traits were controlled. These findings suggest that increased sensitivity to light may be a risk factor for mood problems in the general population, and support the idea that hypersensitivity to light is a trait vulnerability for, rather than symptom of, bipolar disorder. |
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School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Melbourne, VIC, Australia. Electronic address: sean.cain@monash.edu |
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0165-1781 |
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PMID:31136914 |
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GFZ @ kyba @ |
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2510 |
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Bullough, J.D. |
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Discussion of “Closed-Course Human Factors Evaluation of Marking and Marker Visibility” by Barrette and Pike |
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Journal Article |
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2019 |
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Transportation Research Record: Journal of the Transportation Research Board |
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Transportation Research Record |
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2673 |
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10 |
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850-851 |
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Commentary; Vision |
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0361-1981 |
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GFZ @ kyba @ |
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2774 |
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Bullough, J.D.; Bierman, A.; Rea, M.S. |
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Title |
Evaluating the Blue-Light Hazard from Solid State Lighting |
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Journal Article |
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2017 |
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International Journal of Occupational Safety and Ergonomics : JOSE |
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Int J Occup Saf Ergon |
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25 |
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2 |
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311-320 |
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Human Health |
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Purpose New light sources including light emitting diodes (LEDs) have elicited questions about retinal damage, including the blue-light hazard. Some organizations have recommended avoiding using LEDs with correlated color temperatures (CCTs) exceeding 3000 K, since they tend to produce greater short-wavelength energy. This paper provides quantitative comparisons among light sources and use cases as they affect blue-light hazard. Methods The spectral radiant power characteristics of incandescent, fluorescent, LED and daylight sources were evaluated in terms of blue-light hazard using standard procedures for phakic, aphakic and pseudophakic eyes. Results Under most use cases, LEDs do not exhibit greater risk for blue-light hazard than other sources (e.g., incandescent). Because they generally produce little-to-no ultraviolet energy, LEDs often present less risk to aphakic eyes. Conclusions LEDs present no special concerns for blue-light hazard over some other common sources in typical use cases because photophobic responses limit exposure to bright sources. Where photophobic responses might not occur (e.g., eye surgery patients or premature infants) or where individuals suppress these responses (e.g., stage actors), caution is necessary. Evidence remains inconsistent regarding the risk of human retinal damage from long-term exposures to light insufficient to reach acute blue-light hazard thresholds. |
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a Lighting Research Center , Rensselaer Polytechnic Institute , US |
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1080-3548 |
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PMID:28876164 |
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LoNNe @ kyba @; GFZ @ kyba @ |
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1720 |
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Author |
Bumgarner, J.R.; Walker, W.H. 2nd; Liu, J.A.; Walton, J.C.; Nelson, R.J. |
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Title |
Dim light at night exposure induces cold hyperalgesia and mechanical allodynia in male mice |
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Journal Article |
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2020 |
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Neuroscience |
Abbreviated Journal |
Neuroscience |
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in press |
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Animals; Allodynia; Hyperalgesia; Light at Night; Neuroinflammation; Opioid; Pain |
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The growing presence of artificial lighting across the globe presents a number of challenges to human and ecological health despite its societal benefits. Exposure to artificial light at night, a seemingly innocuous aspect of modern life, disrupts behavior and physiological functions. Specifically, light at night induces neuroinflammation, which is implicated in neuropathic and nociceptive pain states, including hyperalgesia and allodynia. Because of its influence on neuroinflammation, we investigated the effects of dim light at night exposure on pain responsiveness in male mice. In this study, mice exposed to four days of dim (5 lux) light at night exhibited cold hyperalgesia. Further, after 28 days of exposure, mice exhibited both cold hyperalgesia and mechanical allodynia. No heat/hot hyperalgesia was observed in this experiment. Altered nociception in mice exposed to dim light at night was concurrent with upregulated interleukin-6 and nerve growth factor mRNA expression in the medulla and elevated mu-opioid receptor mRNA expression in the periaqueductal gray region of the brain. The current results support the relationship between disrupted circadian rhythms and altered pain sensitivity. In summary, we observed that dim light at night induces cold hyperalgesia and mechanical allodynia, potentially through elevated central neuroinflammation and dysregulation of the endogenous opioid system. |
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Department of Neuroscience, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, 26506 United States |
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0306-4522 |
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PMID:32201267 |
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GFZ @ kyba @ |
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2864 |
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