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Author Garstang, R. H.
Title Predictions of Future Light Pollution for Ground-Based Observatory Sites Type Journal Article
Year 1989 Publication Bulletin of the American Astronomical Society Abbreviated Journal
Volume 21 Issue Pages 759
Keywords Skyglow
Abstract In a paper now in press (P.A.S.P. March 1989) we have given details of an improved model for calculating the light pollution caused by one or more cities at an observatory or prospective observatory site. The principal difference in the new model from our earlier one is the inclusion of the effects of the curvature of the Earth, which are significant for the large cities at large distances from mountain observatories.
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Call Number IDA @ intern @ Serial 2545
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Author Marín-Gómez, O.H, & MacGregor-Fors, I.
Title How Early Do Birds Start Chirping? Dawn Chorus Onset and Peak Times in a Neotropical City Type Journal Article
Year 2019 Publication Ardeola Abbreviated Journal
Volume 66 Issue 2 Pages 327-341
Keywords Animals
Abstract Urbanisation poses important challenges for animal communication. Avian dawn choruses are a prominent component of urban soundscapes and have received attention in recent urban ecology studies. Current evidence based on comparisons of urban and non-urban sites suggest that urbanisation is associated with earlier dawn chorus singing activity. However, this phenomenon remains mainly unexplored in tropical cities. We here assessed dawn chorus onset and peak times in two contrasting conditions of the urbanisation intensity gradient (i.e., intra-urban and peri-urban forested areas) of a Neotropical city, Xalapa in Mexico, assessing relationships with noise at sunrise and artificial light at night. We found no differences in dawn chorus onset or singing peak times when contrasting intra- and peri-urban areas. However, we found non-significant trends for earlier chorus onsets and peak times with increasing noise levels. Our results show no relationship between artificial light at night and dawn chorus timing, adding evidence to recent studies showing that light pollution does not seem to be determinant in the dawn choruses of tropical birds. Further research is needed to include a wider array of urbanisation conditions and drivers of the singing routines of urban tropical birds. —Marín-Gómez, O.H. & MacGregor-Fors, I. (2019). How early do birds start chirping? Dawn chorus onset and peak times in a Neotropical city.
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Call Number IDA @ intern @ Serial 2553
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Author Tilottama, G., Sutton, P. C., & Elvidge, C. D.
Title Informal Economy and Remittance Estimates of India Using Nighttime Imagery Type Journal Article
Year 2010 Publication International Journal of Ecological Economics & Statistics Abbreviated Journal
Volume 17 Issue Pages
Keywords Remote Sensing; Economics
Abstract Accurate estimates of the magnitude and spatial distribution of both formal and informal economic activity have many useful applications. Developing alternative methods for making estimates of these economic activities may prove to be useful when other measures are of suspect accuracy or unavailable. This research explores the potential for estimating the formal and informal economy for India using known relationships between the spatial patterns of nighttime satellite imagery and economic activity in the United States (U.S.). Regression models have been developed between spatial patterns of nighttime imagery and Adjusted Official Gross State Product (AGSP) for the states of the U.S. The slope and intercept parameters derived from the regression models of the U.S. were blindly applied to India, resulting in an underestimation of Gross State Income (GSI) for each state and Union Territory (UT) of India because of the lower level of urbanization in India in comparison to the U.S. However, a comparison of estimated GSI from the nighttime lights image and the official Gross State Product (GSP) of the states and UTs of India indicates a high correlation between them (r = 0.93). The different levels of urbanization (i.e. percent of population in urban areas) in the U.S. and India are used to adjust the Estimated Gross Domestic Income (EGDI) by multiplying by the ratio of the percentage of the population in urban areas for the two countries. This gives the Adjusted Estimated Gross Domestic Income of India (AEGDI), which is compared with the official Gross National Income (GNI) estimates of India’s states and UTs. The results suggest that the magnitude of India’s informal economy and the inflow of remittances are 150 percent larger than their existing official estimates in the GNI.
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Call Number IDA @ intern @ Serial 2554
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Author Jurić M., Gaiduk M., Seepold R.
Title Influence of Illuminance on Sleep Onset Latency in IoT Based Lighting System Environment. Type Journal Article
Year 2019 Publication Bioinformatics and Biomedical Engineering Abbreviated Journal
Volume 11495 Issue Pages 429-438
Keywords Human Health
Abstract The exposure to the light has a great influence on human beings in their everyday life. Various lighting sources produce light that reaches the human eye and influences a rhythmic release of melatonin hormone, that is a sleep promoting factor.

Since the development of new technologies provides more control over illuminance, this work uses an IoT based lighting system to set up dim and bright scenarios. A small study has been performed on the influence of illuminance on sleep latency. The system consists of different light bulbs, sensors and a central bridge which are interconnected like a mesh network. Also, a mobile app has been developed, that allows to adjust the lighting in various rooms. With the help of a ferro-electret sensor, like applied in sleep monitoring systems, a subject’s sleep was monitored. The sensor is placed below the mattress and it collects data, which is stored and processed in a cloud or in other alternative locations.

The research was conducted on healthy young subjects after being previously exposed to the preconfigured illuminance for at least three hours before bedtime. The results indicate correlation between sleep onset latency and exposure to different illuminance before bedtime. In a dimmed environment, the subject fell asleep in average 28% faster compared to the brighter environment.
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Call Number IDA @ intern @ Serial 2555
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Author Beebe, W.
Title Rediscovery of the Bermuda cahow Type Journal Article
Year 1935 Publication Bulletin of the New York Zoological Society Abbreviated Journal
Volume 38 Issue Pages 187-190
Keywords Animals
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Call Number GFZ @ kyba @ Serial 2556
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