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Author Butt, M.J.
Title Estimation of Light Pollution Using Satellite Remote Sensing and Geographic Information System Techniques Type Journal Article
Year 2012 Publication GIScience & Remote Sensing Abbreviated Journal GIScience & Remote Sensing
Volume 49 Issue 4 Pages 609-621
Keywords DMSP-OLS; remote sensing; light pollution; measurements
Abstract The primary focus of this research is to estimate light pollution in the urban and suburban regions of Pakistan with the help of satellite remote sensing (SRS) and geographic information system (GIS) techniques. Analog maps and multi-temporal nighttime images of the Defense Meteorological Satellite Program (DMSP) onboard Operational Linescan System (OLS) sensor were used in this study. A series of direct and indirect light pollution maps of the study area were generated and analyzed. The results of the study show that in the urban environment, light pollution is mainly due to artificial nightlight sources.
Address King Abdulaziz University, Jeddah, Saudi Arabia
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title (down)
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1548-1603 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 214
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Author Chen, B.; Shi, G.; Wang, B.; Zhao, J.; Tan, S.
Title Estimation of the anthropogenic heat release distribution in China from 1992 to 2009 Type Journal Article
Year 2012 Publication Acta Meteorologica Sinica Abbreviated Journal Acta Meteorol Sin
Volume 26 Issue 4 Pages 507-515
Keywords DMSP/OLS; estimation; distribution; anthropogenic heat flux; China; remote sensing
Abstract Stable light data from Defense Meteorological Satellite Program (DMSP)/Operational Linescan System (OLS) satellites and authoritative energy consumption data distributed by National Bureau of Statistics of China were applied to estimating the distribution of anthropogenic heat release in China from 1992 to 2009. A strong linear relationship was found between DMSP/OLS digital number data and anthropogenic heat flux density (AHFD). The results indicate that anthropogenic heat release in China was geographically concentrated and was fundamentally correlated with economic activities. The anthropogenic heat release in economically developed areas in northern, eastern, and southern China was much larger than other regions, whereas it was very small in northwestern and southwestern China. The mean AHFD in China increased from 0.07 W m−2 in 1978 to 0.28 W m−2 in 2008. The results indicate that in the anthropogenic heat-concentrated regions of Beijing, the Yangtze River Delta, and the Pearl River Delta, the AHFD levels were much higher than the average. The effect of aggravating anthropogenic heat release on climate change deserves further investigation.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title (down)
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0894-0525 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 215
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Author Elvidge, C.D.; Baugh, K.E.; Anderson, S.J.; Sutton, P.C.; Ghosh, T.
Title The Lumen Gini Coefficient: a satellite imagery derived human development index Type Journal Article
Year 2012 Publication Social Geography Discussions Abbreviated Journal Soc. Geogr. Discuss.
Volume 8 Issue 1 Pages 27-59
Keywords Gini coefficient; light at night; remote sensing; economics; development
Abstract The “Lumen Gini Coefficient” is a simple, objective, spatially explicit and globally available empirical measurement of human development derived solely from nighttime satellite imagery and population density. There is increasing recognition that the distribution of wealth and income amongst the population in a nation or region correlates strongly with both the overall happiness of that population and the environmental quality of that nation or region. Measuring the distribution of wealth and income at national and regional scales is an interesting and challenging problem. Gini coefficients derived from Lorenz curves are a well-established method of measuring income distribution. Nonetheless, there are many shortcomings of the Gini coefficient as a measure of income or wealth distribution. Gini coefficients are typically calculated using national level data on the distribution of income through the population. Such data are not available for many countries and the results are generally limited to single values representing entire countries. In this paper we develop an alternative measure of the distribution of “human development”, called the “Lumen Gini coefficient”, that is derived without the use of monetary measures of wealth and is capable of providing a spatial depiction of differences in development within countries.
Address NOAA National Geophysical Data Center, Boulder, Colorado, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title (down)
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1816-1502 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 216
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Author Wagner, K.; Besemer, K.; Burns, N.R.; Battin, T.J.; Bengtsson, M.M.
Title Light availability affects stream biofilm bacterial community composition and function, but not diversity Type Journal Article
Year 2015 Publication Environmental Microbiology Abbreviated Journal Environ Microbiol
Volume 17 Issue 12 Pages 5036–5047
Keywords ecology, bacteria
Abstract Changes in riparian vegetation or water turbidity and browning in streams alter the local light regime with potential implications for stream biofilms and ecosystem functioning. We experimented with biofilms in microcosms grown under a gradient of light intensities (range: 5 – 152 mumole photons s- 1 m- 2 ) and combined 454-pyrosequencing and enzymatic activity assays to evaluate the effects of light on biofilm structure and function. We observed a shift in bacterial community composition along the light gradient, whereas there was no apparent change in alpha diversity. Multifunctionality, based on extracellular enzymes, was highest under high light conditions and decoupled from bacterial diversity. Phenoloxidase activity, involved in the degradation of polyphenolic compounds, was twice as high on average under the lowest compared to the highest light condition. This suggests a shift in reliance of microbial heterotrophs on biofilm phototroph-derived organic matter under high light availability to more complex organic matter under low light. Furthermore, extracellular enzyme activities correlated with nutrient cycling and community respiration, supporting the link between biofilm structure-function and biogeochemical fluxes in streams. Our findings demonstrate that changes in light availability are likely to have significant impacts on biofilm structure and function, potentially affecting stream ecosystem processes.
Address WasserCluster Lunz, Lunz am See, Austria
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title (down)
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1462-2912 ISBN Medium
Area Expedition Conference
Notes PMID:26013911 Approved no
Call Number LoNNe @ christopher.kyba @ Serial 1179
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Author Zele, A.J.; Cao, D.
Title Vision under mesopic and scotopic illumination Type Journal Article
Year 2014 Publication Frontiers in Psychology Abbreviated Journal Front Psychol
Volume 5 Issue Pages 1594
Keywords vision; color; cones; mesopic; photopic; rods; scotopic; temporal
Abstract Evidence has accumulated that rod activation under mesopic and scotopic light levels alters visual perception and performance. Here we review the most recent developments in the measurement of rod and cone contributions to mesopic color perception and temporal processing, with a focus on data measured using a four-primary photostimulator method that independently controls rod and cone excitations. We discuss the findings in the context of rod inputs to the three primary retinogeniculate pathways to understand rod contributions to mesopic vision. Additionally, we present evidence that hue perception is possible under scotopic, pure rod-mediated conditions that involves cortical mechanisms.
Address Visual Perception Laboratory, Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago Chicago, IL, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title (down)
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1664-1078 ISBN Medium
Area Expedition Conference
Notes PMID:25657632; PMCID:PMC4302711 Approved no
Call Number LoNNe @ christopher.kyba @ Serial 1180
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