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Author Neale, W., Marr, J., McKelvey, N., & Kuzel, M. url  doi
openurl 
  Title Nighttime Visibility in Varying Moonlight Conditions Type Journal Article
  Year 2019 Publication SAE Technical Paper 2019-01-1005 Abbreviated Journal  
  Volume Issue Pages  
  Keywords Moonlight; Vision  
  Abstract When the visibility of an object or person in the roadway from a driver’s perspective is an issue, the potential effect of moonlight is sometimes questioned. To assess this potential effect, methods typically used to quantify visibility were performed during conditions with no moon and with a full moon. In the full moon condition, measurements were collected from initial moon rise until the moon reached peak azimuth. Baseline ambient light measurements of illumination at the test surface were measured in both no moon and full moon scenarios. Additionally, a vehicle with activated low beam headlamps was positioned in the testing area and the change in illumination at two locations forward of the vehicle was recorded at thirty-minute intervals as the moon rose to the highest position in the sky. Also, two separate luminance readings were recorded during the test intervals, one location 75 feet in front and to the left of the vehicle, and another 150 feet forward of the vehicle. These luminance readings yielding the change in reflected light attributable to the moon. In addition to the quantitative measurement of light contributed by the moon, documentation to the change in visibility of objects and pedestrians located on the roadway were documented through photographs. Calibrated nighttime photographs were taken from the driver’s perspective inside the vehicle with low beam headlamps activated. The photographs were analyzed after testing to determine how the light intensity of the pixels in the photographs changed at each thirty-minute interval due to the additional light contribution from the moon. The results of this testing indicate that the quantifiable change in visibility distance attributable to added moonlight was negligible, and in real-world driving situations, the effect of additional illumination from a full moon would be unlikely to affect the detection of an object or pedestrian in or near the travel lane of the roadway.  
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  Call Number IDA @ intern @ Serial 2355  
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Author Rea, M.; Skinner, N.; Bullough, J. url  doi
openurl 
  Title A Novel Barricade Warning Light System Using Wireless Communications Type Journal Article
  Year 2018 Publication SAE Technical Paper 2018-01-5036 Abbreviated Journal  
  Volume In press Issue Pages  
  Keywords Lighting; Safety  
  Abstract Workers in construction and transportation sectors are at increased risk for work-related injuries and fatalities by nearby traffic. Barricade-mounted warning lights meeting current specifications do not always provide consistent and adequate visual guidance to drivers and can contribute to glare and reduced safety. Through an implementation of sensors and wireless communications, a novel, intelligent set of warning lights and a tablet-based interface were developed. The lights modulate between 100% and 10% of maximum intensity rather than between 100% and off in order to improve visual guidance and adjust their overall intensity based on ambient conditions. The lights can be synchronized or operated in sequential flash patterns at any frequency between 1 and 4 Hz, and sequential patterns automatically update based on global positioning satellite (GPS) locations displayed in the control interface. A successful field demonstration of the system verified that its functions were viewed favorably by transportation safety personnel.  
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  Notes Approved no  
  Call Number NC @ ehyde3 @ Serial 2117  
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Author Singhal, R. K., Kumar, V., Kumar, M., & Bose, B. url  openurl
  Title Responses of different light intensities and continue light during dark period on rice (Oryza sativa L.) seed germination and seedling development Type Journal Article
  Year 2019 Publication Journal of Pharmacognosy and Phytochemistry Abbreviated Journal  
  Volume 8 Issue 4 Pages 2602-2609  
  Keywords Plants  
  Abstract Temperature, humidity and moisture content are the important abiotic component regulating seedling establishment in plants including rice. Light factor intensity and duration are also important environmental factors regulating rice growth and development. In the growth and development of rice crop germination followed by seedling establishment is the foremost and very important growth stages. Light component such as intensity, direction and duration are the regulating factor for several physiological, biochemical and molecular processes in plants. To consider these facts, in the present piece of work rice seed of HUR-105 grown under different light regimes, from T1 (2000 lux for 12 h during day time + 12 h dark period) (lower light intensity), T2 (4000 lux for 12 h during day time+ 12 h dark period), T3 (6000 lux for 12 h during day time + 12 h dark period) (moderate), T4 (9000 lux for 12 h during day time + 12 h dark period) (optimum) and to T5 (9000 lux for 12h during day time + 200 lux for 12 h during night time). Germination, seedling growth and biochemical parameters were observed at different time intervals. It was observed that germination %, germination index (GI), germination rate index (GRI), coefficient of velocity of germination (CVG), mean germination rate (MGR), seedling vigour (SV), α-amylase activity and soluble sugar content significantly reduced in both the treatments T1 and T5. Further, the mean time germination and insoluble sugar content were increased in T1 and T5 treatment. The present experiment concluded that both lower light intensity (T1) and addition of low light during dark period (considered as night light pollution) causes stress condition and reduce germination and seedling establishment potential of rice crop.  
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  Notes Approved no  
  Call Number IDA @ intern @ Serial 2738  
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Author Hoyos-Díaz, J. M., Villalba-Alemán, E., Ramoni-Perazzi, P., & Muñoz-Romo, M. url  doi
openurl 
  Title Impact of artificial lighting on capture success in two species of frugivorous bats (chiroptera: phyllostomidae) in an urban locality from the Venezuelan Andes Type Journal Article
  Year 2018 Publication Mastozoologia Neotropical Abbreviated Journal  
  Volume 25 Issue 2 Pages  
  Keywords Animals  
  Abstract Artificial light is becoming a major issue for bats because it affects critical activities such as foraging, reproduction, and communication. We assessed the effect of artificial lighting on Artibeus lituratus and Artibeus jamaicensis in a small secondary growth forest patch near a street subjected to unexpected illumination. Bats were captured in the forest patch using a 12-m long mist net. Results indicated a nearly six-fold, significant decrease in capture success after the street lamps were installed. Artificial light from street lamps functions as a “light barrier” that inhibits bats from conducting short and long-distance movements, which might have detrimental consequences for bats and the plants they disperse. RESUMEN. Impacto de la luz artificial en el éxito de captura de dos especies de murciélagos frugívoros (Chiroptera: Phyllostomidae) en una localidad urbana de Los Andes venezolanos. La luz artificial se ha convertido en un problema grave para los murciélagos, porque está afectando actividades críticas que incluyen forrajeo, reproducción y comunicación. Evaluamos el efecto de la luz artificial en los murciélagos frugívoros Artibeus lituratus y Artibeus jamaicensis, en un pequeño parche de bosque secundario, cercano a una calle sujeta a una iluminación artificial inesperada. Capturamos a los murciélagos en el bosque secundario, empleando una red de neblina de 12 m de longitud. Los resultados indican que el éxito de captura disminuyó significativamente casi seis veces después de la instalación de los bombillos. La luz artificial de las lámparas funciona como “barreras u obstáculos de luz” que inhiben a los murciélagos de realizar movimientos de corta y larga distancia, lo cual podría tener consecuencias perjudiciales para los murciélagos y las plantas que ellos dispersan.  
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  Call Number IDA @ intern @ Serial 2318  
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Author Clanton, N.; Gibbons, R.; Garcia, J.; Barber, M. url  doi
openurl 
  Title Seattle LED Adaptive Lighting Study Type Report
  Year 2014 Publication Northwest Energy Efficiency Alliance Abbreviated Journal NEEA  
  Volume Issue E14-286 Pages  
  Keywords Public Safety; Lighting; Planning; Vision  
  Abstract The Northwest Energy Efficiency Alliance (NEEA) and the City of Seattle partnered to evaluate the future of solid state street lighting in the Pacific Northwest with a two-night demonstration in Seattle's Ballard neighborhood in March 2012. The study evaluates the effectiveness of LED streetlights on nighttime driver object detection visibility as function of light source spectral distribution (color temperature in degrees K) and light distribution. Clanton & Associates and VTTI also evaluated adaptive lighting (tuning of streetlights during periods of reduced vehicular and pedestrian activity) at three levels: one hundred percent of full light output, fifty percent of full light output, and twenty-five percent of full light output. The study, led by Clanton & Associates, Continuum Industries, and the VTTI, built upon previous visual performance studies conducted in Anchorage, Alaska; San Diego, California; and San Jose, California. The use of LED technology for city street lighting is becoming more widespread. While these lights are primarily touted for their energy efficiency, the combination of LEDs with advanced control technology, changes to lighting criteria, and a better understanding of human mesopic (low light level) visibility creates an enormous potential for energy savings and improved motorist and pedestrian visibility and safety. Data from these tests support the following statements: LED luminaires with a correlated color temperature of 4100K provide the highest detection distance, including statistically significantly better detection distance when compared to HPS luminaires of higher wattage. The non-uniformity of the lighting on the roadway surface provides a visibility enhancement and greater contrast for visibility. Contrast of objects, both positive and negative, is a better indicator of visibility than is average luminance level. Dimming the LED luminaires to fifty percent of IES RP-8 levels did not significantly reduce object detection distance in dry pavement conditions. Participants perceived dimming of sidewalks as less acceptable than dimming to the same level on the roadway. Asymmetric lighting did reduce glare and performed similarly to the symmetric lighting at the same color temperature (4100K).  
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  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1763  
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