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Author Pérez Vega, C.; Zielinska-Dabkowska, K.M.; Hölker, F.
Title Urban Lighting Research Transdisciplinary Framework—A Collaborative Process with Lighting Professionals Type Journal Article
Year (down) 2021 Publication International Journal of Environmental Research and Public Health Abbreviated Journal Ijerph
Volume 18 Issue 2 Pages 624
Keywords Planning; Lighting
Abstract Over the past decades, lighting professionals have influenced the experience of the night by brightly illuminating streets, buildings, skylines, and landscapes 24/7. When this became the accepted norm, a dual perspective on night-time was shaped and the visual enjoyment of visitors after dusk was prioritized over natural nightscapes (nocturnal landscapes). During this time, researchers of artificial light at night (ALAN) observed and reported a gradual increase in unnatural brightness and a shift in color of the night-time environment. As a consequence, ALAN has been identified as a relevant pollutant of aquatic and terrestrial habitats, and an environmental stressor, which may adversely affect a wide range of organisms, from micro-organisms to humans. Unfortunately, lighting professionals and ALAN researchers usually attempt to solve today’s sustainable urban lighting problems distinctive to their fields of study, without a dialogue between research and practice. Therefore, in order to translate research knowledge as an applicable solution for the lighting practice and to minimize the impact on the environment, a collaborative framework involving a transdisciplinary process with lighting professionals is crucial to potentially bring the practice, research, production, decision-making, and planning closer to each other. This paper presents a framework to help reduce the existing gap of knowledge, because appropriate lighting applications depend upon it. Access to less light polluted nightscapes in urban environments is just as important as access to unpolluted water, food, and air. This call for action towards sustainable urban lighting should be included in future lighting policies to solve the urgent environmental and health challenges facing our world.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1660-4601 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 3246
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Author Huang, G.; Huang, Y.; Liu, Z.; Wei, J.; Zhu, Q.; Jiang, G.; Jin, X.; Li, Q.; Li, F.
Title White light-emitting diodes based on quaternary Ag–In-Ga-S quantum dots and their influences on melatonin suppression index Type Journal Article
Year (down) 2021 Publication Journal of Luminescence Abbreviated Journal Journal of Luminescence
Volume 233 Issue Pages 117903
Keywords Lighting technology
Abstract Light sources have effect on the circadian rhythms so as to the health of human. Therefore, both visual and non-visual effects should be considered when designing and fabricating light sources. Quantum dot (QD) materials have been extensively used as color converters to fabricate white light-emitting diodes (LEDs). However, most of the work on the photoluminescent QD-based LEDs (QLEDs) are focused on the improvement of visual performances. Here, quaternary Ag–In-Ga-S (AIGS)/ZnS QDs are synthesized for the application of white QLEDs taking both visual and non-visual performances into consideration. Theoretical calculation is carried out and the results show that QLEDs based on the combination of red emission QDs and green emission ones can exhibit a high color rendering index (CRI) of 90.8 and a color correlated temperature (CCT) of 5669 K, a melatonin suppression index (MSI) of 0.788. Furthermore, the combination of red 670 nm emission and green 550 nm AIGS/ZnS QDs are integrated with a blue-emission chip to fabricate QLEDs. The as fabricated devices exhibit a maximum CRI of 90.33, a CCT of 5947 K and an MSI of 0.7866, which are all consistent with the simulation results. These experimental results are comparable to those of some commercial white light sources. We discuss non-visual effects of QLEDs for the first time, and our research results show that AIGS/ZnS QDs, which are free-of heavy metal elements and have wide full-width of half maximums (FWHMs), are suitable for the fabrication white light sources with highly visual performances and tunable MSI values, which have many potential applications in the field of healthy lighting and environmentally friendly light sources.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0022-2313 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 3289
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Author Pan, W.; Du, J.
Title Impacts of urban morphological characteristics on nocturnal outdoor lighting environment in cities: An empirical investigation in Shenzhen Type Journal Article
Year (down) 2021 Publication Building and Environment Abbreviated Journal Building and Environment
Volume in press Issue Pages
Keywords Lighting; Planning; Energy
Abstract Lighting is a vital environmental element that affects people's outdoor activities and the creation of liveable neighbourhoods in cities. The use of appropriate lighting at night in public spaces can benefit people's social well-being. This research examined the effects of urban morphological characteristics on outdoor night-time lighting behaviours by analysing 11 urban neighbourhoods that reflect the variety of the prevailing urban morphological patterns in the city centres of Shenzhen. A set of urban morphological descriptors were analysed and two lighting parameters were evaluated by on-site measurement. The results revealed that the low-density high-rise modern neighbourhoods presented very high outdoor illuminance levels, but extremely low occupant use at night, and consequently, remain significant potential of light pollution and energy waste. By contrast, urban villages with high-density mid-rise patterns possess limited outdoor lighting facilities but exhibited very high nocturnal neighbourhood vitality. This type of neighbourhood presents a “demand-oriented and energy-saving” lighting behaviour during the night-time through the use of light spill from the nearby indoor light sources. Multivariable linear regression indicated that morphological characteristics significantly contribute to the illumination distribution within urban spaces. Together, building coverage ratio, floor area ratio, tree coverage ratio and ground surface albedo explain 88% of the variability of night-time site illuminance uniformity. With adding the dimension of urban morphology, this research tries to extend the scope of urban nocturnal lighting studies and provides insights into the setting of more specific criteria for urban design, so as to contribute to healthy city initiatives.
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0360-1323 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 3290
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Author Ardavani, O.; Zerefos, S.; Doulos, L.T.
Title Redesigning the exterior lighting as part of the urban landscape: The role of transgenic bioluminescent plants in mediterranean urban and suburban lighting environments Type Journal Article
Year (down) 2020 Publication Journal of Cleaner Production Abbreviated Journal Journal of Cleaner Production
Volume 242 Issue Pages 118477
Keywords Plants; Lighting
Abstract This research discusses the feasibility of replacing or supporting artificial lighting with Transgenic Bioluminescent Plants (TBP), as a means of minimizing light pollution, reducing electrical energy consumption and de-carbonizing urban and suburban outdoor environments, creating sustainable conditions and enriching the quality of life. Until now, no information is given about the light output of any TBPs and the question “Are the TBPs capable of producing the necessary lighting levels for exterior lighting?” is unanswered. For this reason, a new methodology is proposed for selecting and analyzing the lighting output potential of transgenic plants ted for specific climatic conditions. This methodology considers growth and reduction factors, as well as a formulae for estimating the plants’ luminous output by performing light measurements. Results show that transgenic plants in medium growth can emit a median luminous flux of up to 57 lm, a value that can definitely support low lighting requirements when used in large numbers of plants. From the lighting measurements and calculations performed in this research, the light output of the TBPs for a typical road with 5m width was found equal to 2lx. The amount of plants required was 40 at each side of the road for every 30m of streets with P6 road class. The results show that the use of bioluminescent plants can actually contribute to the reduction of energy consumption, concerning only the lighting criterium, thus creating an enormous opportunity for a new state-of- the-art market and research that could potentially minimize CO2 emissions and light pollution, improve urban and suburban microclimate, mitigate the effects of climate change, as well as provide an alternative means of lighting affecting both outdoor lighting design and landscape planning in suburban and urban settings. Moreover, further research should be applied considering also other possible ecological impacts before applying TBPs for exterior lighting applications.
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0959-6526 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2711
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Author Ogando-Martínez, A.; Troncoso-Pastoriza, F.; Eguía-Oller, P.; Granada-Álvarez, E.; Erkoreka, A.
Title Model Calibration Methodology to Assess the Actual Lighting Conditions of a Road Infrastructure Type Journal Article
Year (down) 2020 Publication Infrastructures Abbreviated Journal Infrastructures
Volume 5 Issue 1 Pages 2
Keywords Lighting
Abstract Street lighting plays an important role in the comfort and safety of drivers and pedestrians, so the control and management of the lighting systems operation and consumption is an essential service for a city. In this document, a methodology is presented to calibrate lighting models in order to assess the lighting performance through simulation techniques. The objective of this calibration is to identify the maintenance factor of the street lamps, determine the real average luminance coefficient of the road pavement and adapt the reflection properties of the road material. The method is applied in three stages and is based on the use of Radiance and GenOpt software suits for the modeling, simulation, and calibration of lighting scenes. The proposed methodology achieves errors as low as 13% for the calculation of illuminance and luminance, evincing its potential to assess the actual lighting conditions of a road.
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2412-3811 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2802
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