|   | 
Details
   web
Records
Author Tian, J.F.; Deng, L.C.; Zhang, X.B.; Lu, X.-M.; Sun, J.J.; Liu, Q.L.; Zhou, Q.; Yan, Z.Z., Xin, Y.; Wang, K.; Jiang, X.-J.; Luo, Z.Q., Yang, J.
Title Optical Observing Conditions at Delingha Station Type Report
Year 2016 Publication n/a Abbreviated Journal n/a
Volume n/a Issue n/a Pages n/a
Keywords Skyglow; China; Tibet; SONG; Delingha; Qinghai-Tibetan Plateau; Tibetan Plateau
Abstract SONG is a global ground based network of 1 meter telescopes for stellar time-domain science, an international collaboration involving many countries across the world. In order to enable a favourable duty cycle, the SONG network plans to create a homogeneous distribution of 4 nodes in each of the northern and southern hemispheres. A natural possibility was building one of the northern nodes in East Asia, preferably on the Qinghai-Tibetan Plateau. During the last decade, a great deal of effort has been invested in searching for high a quality site for ground based astronomy in China, since this has been one of the major concerns for the development of Chinese astronomy. A number of sites on the plateau have been in operation for many years, but most of them are used only for radio astronomy, as well as small optical telescopes for applied astronomy. Several potential sites for large optical instruments have been identified by the plateau site survey, but as yet none of them have been adequately quantitatively characterised. Here we present results from a detailed multi-year study of the Delingha site, which was eventually selected for the SONG-China node. We also describe the site monitoring system that will allow an isolated SONG and 50BiN node to operate safely in an automated mode.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language (down) English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1391
Permanent link to this record
 

 
Author Bergs, R.
Title Exploring the Spatial Economy by Night Type Report
Year 2016 Publication n/a Abbreviated Journal n/a
Volume n/a Issue n/a Pages n/a
Keywords Economics; DMSP; DMSP-OLS; remote sensing; spatial distribution
Abstract Night satellite images may offer an interesting tool to generate socio-economically relevant data and to analyse the evolution of space, e.g. cities or rural areas, and how spatial units interact over time. This paper is just an essay with preliminary ideas for discussion; the approach is explorative-methodological rather than one putting an empirical focus on a defined research item. Empirics discussed in this paper are just various examples collected from tinkering.

The DMSP-OLS images and adequate image analysis software such as ImageJ (in some cases to be complemented by further statistics software) provide a useful perspective for the analysis of spatial change. Since there is a stable and significant correlation between social and economic variables (population density, GDP PPP) and luminosity, such image analyses contain important information on spatial economic development. Analysis of night imagery is certainly not adequate to replace the statistical analysis of regional data, but it is a good tool to confirm and illustrate patterns of spatial heterogeneity and spatial dependence over time.
Address PRAC – Bergs & Issa Partnership Co., Bad Soden, Germany
Corporate Author Thesis
Publisher n/a Place of Publication Editor
Language English Summary Language (down) English Original Title
Series Editor Series Title Planung & Forschung Spolicy Research & Consultancy Discussion Paper Series Abbreviated Series Title
Series Volume Series Issue Edition
ISSN n/a ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1392
Permanent link to this record
 

 
Author Rowse, E.G.; Harris, S.; Jones, G.
Title The Switch from Low-Pressure Sodium to Light Emitting Diodes Does Not Affect Bat Activity at Street Lights Type Journal Article
Year 2016 Publication PloS one Abbreviated Journal PLoS One
Volume 11 Issue 3 Pages e0150884
Keywords Animals; bats; England; United Kingdom; low-pressure sodium; LPS; LED; LED lighting; ecology; urban ecology; Feeding Behavior
Abstract We used a before-after-control-impact paired design to examine the effects of a switch from low-pressure sodium (LPS) to light emitting diode (LED) street lights on bat activity at twelve sites across southern England. LED lights produce broad spectrum 'white' light compared to LPS street lights that emit narrow spectrum, orange light. These spectral differences could influence the abundance of insects at street lights and thereby the activity of the bats that prey on them. Most of the bats flying around the LPS lights were aerial-hawking species, and the species composition of bats remained the same after the switch-over to LED. We found that the switch-over from LPS to LED street lights did not affect the activity (number of bat passes), or the proportion of passes containing feeding buzzes, of those bat species typically found in close proximity to street lights in suburban environments in Britain. This is encouraging from a conservation perspective as many existing street lights are being, or have been, switched to LED before the ecological consequences have been assessed. However, lighting of all spectra studied to date generally has a negative impact on several slow-flying bat species, and LED lights are rarely frequented by these 'light-intolerant' bat species.
Address School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom; liz.rowse(at)bristol.ac.uk
Corporate Author Thesis
Publisher PLOS Place of Publication Editor
Language English Summary Language (down) English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1932-6203 ISBN Medium
Area Expedition Conference
Notes PMID:27008274 Approved no
Call Number IDA @ john @ Serial 1403
Permanent link to this record
 

 
Author Hyari, K.H.; Khelifi, A.; Katkhuda, H.
Title Multiobjective Optimization of Roadway Lighting Projects Type Journal Article
Year 2016 Publication Journal of Transportation Engineering Abbreviated Journal J. Transp. Eng.
Volume Issue Pages 04016024
Keywords Lighting; multiobjective optimization; traffic safety; road safety; lighting design; uniformity; genetic algorithm
Abstract Roadway lighting systems play a major role in maintaining nighttime traffic safety as they reduce both the number and severity of nighttime traffic accidents. While the design of roadway lighting systems involves multiple objectives, past studies have focused on optimizing only one of the multiple objectives that should be considered. This paper presents a multiobjective optimization model for roadway lighting projects that simultaneously optimizes four design objectives. The incorporated objectives are (1) maximizing the average lighting level on the road surface; (2) maximizing the lighting uniformity along the roadway; (3) minimizing the glare to road users produced by the lighting system; and (4) minimizing the cost of operating the lighting system. The model is designed and developed as a multiobjective genetic algorithm to help decision-makers in their endeavor to provide efficient roadway lighting systems that strike a balance between the four conflicting objectives. The present model considers the following six design variables: type of lighting fixture, mounting height, spacing, fixture offset, fixture’s inclination, and fixture’s rotation angle. An application example is analyzed in this paper to clarify the use of the model and display its significant features in producing better lighting arrangements for roadways.
Address Dept. of Civil Engineering, Hashemite Univ., P.O. Box 150459, Zarqa 13115, Jordan; hyari(at)hu.edu.jo
Corporate Author Thesis
Publisher ASCE Place of Publication Editor
Language English Summary Language (down) English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0733-947X ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1405
Permanent link to this record
 

 
Author Costin, K.J.; Boulton, A.M.
Title A Field Experiment on the Effect of Introduced Light Pollution on Fireflies (Coleoptera: Lampyridae) in the Piedmont Region of Maryland Type Journal Article
Year 2016 Publication The Coleopterists Bulletin Abbreviated Journal The Coleopterists Bulletin
Volume 70 Issue 1 Pages 84-86
Keywords Animals; insects; fireflies; Coleoptera; Lampyridae; Coleoptera Lampyridae; artificial light at night; ecology; light pollution
Abstract (none)
Address Environmental Biology Hood College 401 Rosemont Avenue Frederick, MD 21701, U.S.A.; kjc(at)hood.edu
Corporate Author Thesis
Publisher BioOne Place of Publication Editor
Language English Summary Language (down) English Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0010-065X ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number IDA @ john @ Serial 1406
Permanent link to this record