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Author Rocha, H.; Peretta, I.S.; Lima, G.F.M.; Marques, L.G.; Yamanaka, K. url  doi
openurl 
  Title Exterior lighting computer-automated design based on multi-criteria parallel evolutionary algorithm: optimized designs for illumination quality and energy efficiency Type Journal Article
  Year 2015 Publication Expert Systems with Applications Abbreviated Journal Expert Systems with Applications  
  Volume 45 Issue Pages 208-222  
  Keywords Lighting  
  Abstract A proper professional lighting design implies in a continuous search for the best compromise between both low power consumption and better lighting quality. This search converts this design into a hard to solve multi-objective optimization problem. Evolutionary algorithms are widely used to attack that type of hard optimization problems. However, professionals could not benefit from that kind of assistance since evolutionary algorithms have been unexplored by several commercial lighting design computer-aided softwares. This work proposes a system based on evolutionary algorithms which implement a computer-automated exterior lighting design both adequate to irregular shaped areas and able to respect lighting pole positioning constraints. The desired lighting design is constructed using a cluster of computers supported by a web client, turning this application into an efficient and easy tool to reduce project cycles, increase quality of results and decrease calculation times. This ELCAutoD-EA system consists in a proposal for a parallel multi-objective evolutionary algorithm to be executed in a cluster of computers with a Java remote client. User must choose lighting pole heights, allowed lamps and fixtures, as well as the simplified blue print of the area to be illuminated, marking the sub-areas with restrictions to pole positioning. The desired average illuminance must also be informed as well as the accepted tolerance. Based on user informed data, the developed application uses a dynamic representation of variable size as a chromosome and the cluster executes the evolutionary algorithm using the Island model paradigm. Achieved solutions comply with the illumination standards requirements and have a strong commitment to lighting quality and power consumption. In the present case study, the evolved design used 37.5% less power than the reference lighting design provided by a professional and at the same time ensured a 227.3% better global lighting uniformity. A better lighting quality is achieved because the proposed system solves multi-objective optimization problems by avoiding power wastes which are often unclear to a professional lighting engineer in charge of a given project.  
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  ISSN 0957-4174 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1281  
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Author Román, M.O.; Stokes, E.C. url  doi
openurl 
  Title Holidays in lights: Tracking cultural patterns in demand for energy services: TRACKING CULTURAL PATTERNS IN DEMAND FOR ENERGY SERVICES Type Journal Article
  Year 2015 Publication Earth's Future Abbreviated Journal Earth's Future  
  Volume 3 Issue 6 Pages 182-205  
  Keywords remote sensing, energy, lighting, society  
  Abstract Successful climate change mitigation will involve not only technological innovation, but also innovation in how we understand the societal and individual behaviors that shape the demand for energy services. Traditionally, individual energy behaviors have been described as a function of utility optimization and behavioral economics, with price restructuring as the dominant policy lever. Previous research at the macro-level has identified economic activity, power generation and technology, and economic role as significant factors that shape energy use. However, most demand models lack basic contextual information on how dominant social phenomenon, the changing demographics of cities, and the sociocultural setting within which people operate, affect energy decisions and use patterns. Here we use high-quality Suomi-NPP VIIRS nighttime environmental products to: (1) observe aggregate human behavior through variations in energy service demand patterns during the Christmas and New Year's season and the Holy Month of Ramadan and (2) demonstrate that patterns in energy behaviors closely track sociocultural boundaries at the country, city, and district level. These findings indicate that energy decision making and demand is a sociocultural process as well as an economic process, often involving a combination of individual price-based incentives and societal-level factors. While nighttime satellite imagery has been used to map regional energy infrastructure distribution, tracking daily dynamic lighting demand at three major scales of urbanization is novel. This methodology can enrich research on the relative importance of drivers of energy demand and conservation behaviors at fine scales. Our initial results demonstrate the importance of seating energy demand frameworks in a social context.  
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  ISSN 2328-4277 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @; GFZ @ kyba @ Serial 1296  
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Author Hadi, K.; DuBose, J.R.; Ryherd, E. url  doi
openurl 
  Title Lighting and Nurses at Medical-Surgical Units: Impact of Lighting Conditions on Nurses' Performance and Satisfaction Type Journal Article
  Year 2015 Publication Herd Abbreviated Journal Herd  
  Volume 9 Issue 3 Pages 17-30  
  Keywords psychology; lighting  
  Abstract OBJECTIVE: This study investigates the perception of nurses about their lighting environment at medical-surgical hospital units in order to understand areas of improvement for lighting at these units. BACKGROUND: The bulk of the research about nurses and lighting is focused on nighttime nursing, exploring the disruptions of nurses' circadian rhythm and maintaining alertness. The understanding of nurses' perception about lighting and its impact on nurses' task performance and patient examination remains imprecise. METHODS: This study used an online survey to ask a set of questions about lighting in medical-surgical units at five key locations including centralized nurse stations, decentralized nurse stations (DCNS), patient bedsides, patient bathrooms, and corridors from 393 survey participants. It then explored the survey findings in more depth through conducting focus groups with eight volunteer nurses. RESULTS: Lighting conditions at patient besides and DCNSs were significantly less desirable for nurses compared to other locations. A significant relationship between nurses' access to lighting controls (switches and dimmers) and satisfaction about the lighting environment was found. No significant relationship was observed between the individual characteristics of nurses (such as age, years of experience, etc.) and findings of this study. CONCLUSIONS: Thoughtful design of the lighting environment can improve nurses' satisfaction and perception about their working environment.  
  Address University of Nebraska-Lincoln, Omaha, NE, USA  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1937-5867 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:26370449 Approved no  
  Call Number LoNNe @ kyba @ Serial 1298  
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Author Cho, H.M.; Lee, M.K.; Chang, S.J.; Kim, S. openurl 
  Title Analysis on Luminance of Outdoor Signboards of Commercial Areas in Seoul at Night Considering Light Pollution Type Journal Article
  Year 2015 Publication Journal of The Korean Society of Living Environment System Abbreviated Journal J. Korean Soc. Living Environ. Sys  
  Volume 22 Issue 4 Pages 583-595-589  
  Keywords Lighting; Light pollution; Commercial areas; Night-time lighting; Outdoor Signboards; Luminance; outdoor lighting; artificial light at night; signs; LED signs; LED billboards  
  Abstract As the city is commercialized, the number of stores is increased and it also makes outdoor billboards’ number increased accordingly. And signboards on the street make pedestrians unpleasant, making light pollution by light reflection. In this study, we measured the luminance to target the outdoor signboards of commercial area in Seoul. On the basis of the obtained results, the External system showed high luminance values, and the luminance values of Letter-type system were lower. Furthermore, the measured value at the midnight time was higher, and we considered that the more floating population bring about the high luminance value of the External system. The signboards of External system should be avoided, the Letter-type system should be recommended.  
  Address School of Architecture, Soongsil University, Seoul, Korea; skim(at)ssu.ac.kr  
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  Language English Summary Language English Original Title  
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  Notes Approved no  
  Call Number IDA @ john @ Serial 1319  
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Author Murray, A.T.; Feng, X. url  doi
openurl 
  Title Public street lighting service standard assessment and achievement Type Journal Article
  Year 2015 Publication Socio-Economic Planning Sciences Abbreviated Journal Socio-Economic Planning Sciences  
  Volume 53 Issue Pages 14-22  
  Keywords Lighting  
  Abstract Nighttime lighting is an important public service that impacts human activities and promotes transportation and pedestrian safety. Of course, such services are not free and have been found to have negative impacts on the environment. Responsible stewardship of the built environment requires that efficiency and care in the delivery of services be taken, particularly in the context of sustainability concerns. A significant problem with existing urban infrastructure systems like street lighting is that they have evolved over time using rule-of-thumb planning standards. Given this, systematic assessment and re-evaluation offers much potential for enhancing the spatial efficiency of infrastructure but also the opportunity to explicitly account for environmental impacts in combination with safety and security. This paper applies a methodology for studying lighting in urban areas based upon the use of spatial analytics, including GIS and spatial optimization. Findings and results are reported for a study area in San Diego, California, highlighting current system configuration issues, method development and the potential long term benefits of systematic analysis of public sector services.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-0121 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1344  
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