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Author Andre, J.; Owens, D.A.
Title The Twilight Envelope: A User-Centered Approach to Describing Roadway Illumination at Night Type Journal Article
Year 2001 Publication Human Factors: The Journal of the Human Factors and Ergonomics Society Abbreviated Journal (up)
Volume 43 Issue 4 Pages 620-630
Keywords Society
Abstract Visual recognition functions, such as acuity and contrast sensitivity, deteriorate rapidly over the declining luminances found during civil twilight. Thus civil twilight, a critical part of the transition between daylight and darkness, represents lighting conditions that may be useful to describe artificial illumination. Automotive headlamps project a three-dimensional beam that ranges from illumination levels comparable to daylight at the vehicle to the dark limit of civil twilight (3.3 1x) at some distance ahead. This twilight envelope is characterized as a distance beyond which foveal visual functions are severely impaired, and thus it provides a general, functional description of the useful extent of the headlamp beam. This user-centered approach to describing illumination is useful for characterizing visibility when driving at night or in other artificially lit environments. This paper discusses the twilight envelope approach and its application to intervehicle variations in headlamp systems. Actual or potential applications of this research include user-centered description of artificial illumination and driver/pedestrian safety education.
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Call Number LoNNe @ kagoburian @ Serial 988
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Author Arnold, V. (ed)
Title Als das Licht kam: Erinnerungen an die Elektrifizierung Type Book Whole
Year 1986 Publication Wien, Köln, Graz. Böhlau Abbreviated Journal (up)
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Keywords Society
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Publisher Place of Publication Editor Arnold, V.
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Call Number LoNNe @ kagoburian @ Serial 989
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Author Barker, R.; Cohen, C.
Title Photoflashes: a potential new tool for control of insect populations. Type Journal Article
Year 1964 Publication Science Abbreviated Journal (up)
Volume 145 Issue Pages 1195–1197
Keywords Animals
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Call Number LoNNe @ schroer @ Serial 591
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Author Barker, R. J.; Cohen, C. F.
Title Light-dark cycles and Diapause induction in Pieris rapae (L.). Type Journal Article
Year 1965 Publication Entomologia Experimentalis et Applicata Abbreviated Journal (up)
Volume 8 Issue 1 Pages 27–32
Keywords Animals
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Call Number LoNNe @ kagoburian @ Serial 592
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Author Eisenbeis, G.; Hassel, F.
Title Zur Anziehung nachtaktiver Insekten durch Straßenlaternen-eine Studie kommunaler Beleuchtungseinrichtungen in der Agrarlandschaft Rheinhessens. Type Journal Article
Year 2000 Publication Natur Und Landschaft Abbreviated Journal (up)
Volume 4 Issue Pages 145–156
Keywords Animals
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Call Number LoNNe @ kagoburian @ Serial 596
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