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Author |
Morrow, E.N.; Hutton, S.A. |
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Title |
The Chicago Alley Lighting Project: Final Evaluation Report |
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Journal Article |
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2000 |
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Illinois Criminal Justice Information Authority |
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Public Safety |
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Begun in October of 1998, the first part of the plan sought to upgrade and improve the city's 175,000 streetlights, which illuminate the arterial and residential streets. The second part of the plan involved repairing and upgrading the lighting in and around viaducts and Chicago Transit Authority stations. The final part of the plan has been to boost lighting levels in alleys across the city as a tool for public safety and fighting crime. In the past, 90-watt lights illuminated most city alleys; alley lighting levels have been increased by installing new fixtures that can accommodate 250-watt bulbs. The Illinois Criminal Justice Information Authority undertook an evaluation to assess the impact of increased alley lighting on crime rates in two eight-square-block areas, with emphasis on crimes that were most likely to have occurred in alleys. The evaluation first examined change in the experimental area that received increased alley lighting over a 1-year period prior to increased alley lighting and a 1-year period thereafter. Next, change over a 6-month period before and after increased alley lighting was examined for both the experimental area and the control area. The evaluation found that reported offenses increased between the 1-year preinstallation and 1-year postinstallation study period in the experimental area where alley lighting was improved. The evaluation also found that the experimental area experienced more notable increases in reported incidents over a 6-month preinstallation and 6-month postinstallation study period compared to the control area. The evaluation could not provide a definitive explanation of these findings. |
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LoNNe @ christopher.kyba @ |
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453 |
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Atkins, S.; Husain, S.; Storey, A. |
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Title |
The Influence of Street Lighting on Crime and Fear of Crime". |
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1991 |
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Crime prevention unit paper No. 28, London Home Office |
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LoNNe @ christopher.kyba @ |
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454 |
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Ramsay, M.; Newton, R. |
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Title |
THE EFFECT OF BETTER STREET LIGHTING ON CRIME AND FEAR: A REVIEW |
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1991 |
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Crime prevention unit paper No. 29, London Home Office |
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455 |
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Kyba, C.C.M.; Tong, K.P.; Bennie, J.; Birriel, I.; Birriel, J.J.; Cool, A.; Danielsen, A.; Davies, T.W.; Outer, P.N. den; Edwards, W.; Ehlert, R.; Falchi, F.; Fischer, J.; Giacomelli, A.; Giubbilini, F.; Haaima, M.; Hesse, C.; Heygster, G.; Hölker, F.; Inger, R.; Jensen, L.J.; Kuechly, H.U.; Kuehn, J.; Langill, P.; Lolkema, D.E.; Nagy, M.; Nievas, M.; Ochi, N.; Popow, E.; Posch, T.; Puschnig, J.; Ruhtz, T.; Schmidt, W.; Schwarz, R.; Schwope, A.; Spoelstra, H.; Tekatch, A.; Trueblood, M.; Walker, C.E.; Weber, M.; Welch, D.L.; Zamorano, J.; Gaston, K.J. |
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Title |
Worldwide variations in artificial skyglow |
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2015 |
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Scientific Reports |
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Sci. Rep. |
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5 |
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8409 |
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Skyglow; light pollution; measurements; remote sensing; sky brightness; calibration |
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Despite constituting a widespread and significant environmental change, understanding of artificial nighttime skyglow is extremely limited. Until now, published monitoring studies have been local or regional in scope, and typically of short duration. In this first major international compilation of monitoring data we answer several key questions about skyglow properties. Skyglow is observed to vary over four orders of magnitude, a range hundreds of times larger than was the case before artificial light. Nearly all of the study sites were polluted by artificial light. A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. Overcast skies ranged from a third darker to almost 18 times brighter than clear. Clear sky radiances estimated by the World Atlas of Artificial Night Sky Brightness were found to be overestimated by ~25%; our dataset will play an important role in the calibration and ground truthing of future skyglow models. Most of the brightly lit sites darkened as the night progressed, typically by ~5% per hour. The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. |
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Leibniz-Institute for Freshwater Ecology and Inland Fisheries, Berlin, Germany |
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2045-2322 |
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IDA @ john @ |
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1103 |
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Huang, Q.; He, C.; Gao, B.; Yang, Y.; Liu, Z.; Zhao, Y.; Dou, Y. |
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Detecting the 20 year city-size dynamics in China with a rank clock approach and DMSP/OLS nighttime data |
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2015 |
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Landscape and Urban Planning |
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Landscape and Urban Planning |
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137 |
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138-148 |
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remote sensing |
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0169-2046 |
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LoNNe @ christopher.kyba @ |
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1104 |
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