| Records |
| Author |
Petrželková, K. J.; Downs, N. C.; Zukal, J.; Racey, P. A. |
Title  |
A comparison between emergence and return activity in pipistrelle bats Pipistrellus pipistrellus and P. pygmaeus |
Type |
Journal Article |
| Year |
2006 |
Publication |
Acta Chiropterologica |
Abbreviated Journal |
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| Volume |
8 |
Issue |
2 |
Pages |
381-390 |
| Keywords |
animals; fying mammals: animal behaviour |
| Abstract |
Bats may be vulnerable to predation during evening emergence and morning return to their roosts. Early emergence increases the risk of exposure to raptorial birds, but emerging late confers a risk of missing the dusk peak of aerial insects. Here, both emergence and return activity was studied in detail at the same roosts for the first time. We investigated six maternity colonies of pipistrelle bats (Pipistrellus pipistrellus and P. pygmaeus) in NE Scotland and recorded light levels and time of emergence and return of the bats with respect to sunset and sunrise on the same nights. Parameters of return activity generally occurred at lower light intensities than those of emergence. Therefore, the interval between dawn return and sunrise was generally longer than that between sunset and dusk emergence. Emergence and return were equal in duration. Bats clustered more on emergence in comparison with return during pregnancy and lactation, whereas during postlactation this trend was reversed. |
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BioOne |
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English |
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English |
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LoNNe @ schroer @ |
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1598 |
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Richter, A.; Ng, K.T.W.; Karimi, N. |
| Title |
A data driven technique applying GIS, and remote sensing to rank locations for waste disposal site expansion |
Type |
Journal Article |
| Year |
2019 |
Publication |
Resources, Conservation and Recycling |
Abbreviated Journal |
Resources, Conservation and Recycling |
| Volume |
149 |
Issue |
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Pages |
352-362 |
| Keywords |
Remote Sensing |
| Abstract |
Landfilling is the most common method for final treatment of municipal solid waste worldwide. Canadians generated 973 kg/cap of waste in 2016, and 73% of that was sent to landfills or incinerators. This study proposes a novel method which combines remote sensing and vector data to rank the suitability of current landfill sites and their area of influence for expansion in Saskatchewan, Canada; where there are currently more than 500 active landfills. This study found that using average normalized data, 55.3% of the land in the study area was suitable or moderately suitable for landfill expansion while 45% of the area was unsuitable for landfill expansion. Polygon 32, an area dominated by agriculture and pasture land, is the most suitable for landfill expansion based on the mean normalized rank and was ranked 9th (out of 39) in terms of standard deviation. Polygon 27 is the least suitable for landfill expansion, having the largest mean normalized rank, and was ranked 38th (out of 39) in terms of standard deviation. This method is advantageous compared to other decision-making tools which rely on expert opinion. This method relies solely on remote sensing and vector data; but is flexible enough that weighting of data sets can be applied by policy makers if so desired. Results show that using remote sensing data and vector data together are capable of capturing distinctly different aspects of the study area, and that vector data can be used as a proxy for imagery where cloud cover is present. |
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0921-3449 |
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GFZ @ kyba @ |
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2582 |
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| Author |
Coughlin, M.; Stubbs, C.; Claver, C. |
| Title |
A daytime measurement of the lunar contribution to the night sky brightness in LSST’s ugrizy bands–initial results |
Type |
Journal Article |
| Year |
2016 |
Publication |
Experimental Astronomy |
Abbreviated Journal |
Exp Astron |
| Volume |
41 |
Issue |
3 |
Pages |
393-408 |
| Keywords |
Moonlight |
| Abstract |
We report measurements from which we determine the spatial structure ofthe lunar contribution to night sky brightness, taken at the LSST site on Cerro Pachonin Chile. We use an array of six photodiodes with filters that approximate the LargeSynoptic Survey Telescope’su, g, r, i, z,andybands. We use the sun as a proxy forthe moon, and measure sky brightness as a function of zenith angle of the point onsky, zenith angle of the sun, and angular distance between the sun and the point onsky. We make a correction for the difference between the illumination spectrum of thesun and the moon. Since scattered sunlight totally dominates the daytime sky bright-ness, this technique allows us to cleanly determine the contribution to the (cloudless)night sky from backscattered moonlight, without contamination from other sourcesof night sky brightness. We estimate our uncertainty in the relative lunar night skybrightness vs. zenith and lunar angle to be between 0.3–0.7 mags depending on thepassband. This information is useful in planning the optimal execution of the LSSTsurvey, and perhaps for other astronomical observations as well. Although our pri-mary objective is to map out the angular structure and spectrum of the scattered lightfrom the atmosphere and particulates, we also make an estimate of the expected num-ber of scattered lunar photons per pixel per second in LSST, and find values that arein overall agreement with previous estimates. |
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0922-6435 |
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GFZ @ kyba @ |
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3039 |
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Doulos, L.T.; Sioutis, I.; Kontaxis, P.; Zissis, G.; Faidas, K. |
| Title |
A decision support system for assessment of street lighting tenders based on energy performance indicators and environmental criteria: Overview, methodology and case study |
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Journal Article |
| Year |
2019 |
Publication |
Sustainable Cities and Society |
Abbreviated Journal |
Sustainable Cities and Society |
| Volume |
51 |
Issue |
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Pages |
101759 |
| Keywords |
Lighting; Policy |
| Abstract |
While LEDs are now the most efficient light sources, their adoption in the road lighting design has been delayed due to a variety of reasons such as malpractice, huge number of inappropriate luminaires, missing technical information and ineffective policies. An example is the, low luminous efficacy values, which confuse the decision makers for national roads. The new part of EN13201-5 describes many energy performance indicators, which are still not used in street light projects or in lighting simulation tools. The aim of this paper is a) to present the significance of using these indicators through a decision tool, capable to evaluate a number of lighting designs in a lighting tender and b) to propose an evaluation method as part of a future energy policy including environmental criteria. A case study is also presented. The results show that the aforementioned decision tool is necessary in order to evaluate the ranking of the corresponding offers. Thus, increased energy savings could be achieved together with environmental benefits. In the case examined, the best solution resulted in 72.1% energy savings and CO2 emission reduction. |
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2210-6707 |
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GFZ @ kyba @ |
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2609 |
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Bryant, J.M.; Hake, H.G. |
| Title |
A decision support system for assessment of street lighting tenders based on energy performance indicators and environmental criteria: Overview, methodology and case study |
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Journal Article |
| Year |
1911 |
Publication |
University of Illinois Bulletin |
Abbreviated Journal |
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| Volume |
9 |
Issue |
8 |
Pages |
Bulletin No. 51 |
| Keywords |
Lighting; Energy; Economics; Planning |
| Abstract |
It is the purpose of this bulletin to make available information concerning street illumination. The suggestion which led to this compilation came from the many inquiries received by the Electrical Engineering Department each year from those interested in framing ordinances permitting corporations or individuals to operate street lighting systems. An attempt has been made to present this information in such a form as to be readily understood by the general public, without requiring any special technical knowledge. The data have been compiled from reliable sources, and checked in many instances by tests conducted by the writers. |
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University of Illinois at Urbana Champaign, College of Engineering |
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English |
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GFZ @ kyba @ |
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2739 |
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