Leukos最新文献_第4页

LEUKOS Editor Report, Reflections, and Farewell 白血病编辑报告，反思和告别

IF 3.6 2区工程技术

Leukos Pub Date : 2023-01-30 DOI: 10.1080/15502724.2022.2160614

K. Houser

{"title":"LEUKOS Editor Report, Reflections, and Farewell","authors":"K. Houser","doi":"10.1080/15502724.2022.2160614","DOIUrl":"https://doi.org/10.1080/15502724.2022.2160614","url":null,"abstract":"This is my last issue as editor of LEUKOS, a position I have held since 2011. Given my longevity in this role, it seems appropriate to share some parting reflections on LEUKOS’s recent past. As LEUKOS transitions to a new leadership and administrative model, I hope that insights derived from this reflection will support the journal’s next phase of development. This editorial summarizes historical events, journal-level performance statistics, context for the performance trends, and what I believe have been the keys to LEUKOS’s current success. LEUKOS was founded in 2004 based on ideas from Prof. Mark Rea, who imagined reforming the Journal of the Illuminating Engineering Society in an online format that would operate separately from the paper submission and review process associated with the IES Annual Conference. Prof. David DiLaura was the first editor of LEUKOS, a position he held through 2011. Prof. DiLaura worked with Operations Advisory Board members Rita Harrold, Richard Mistrick, Gary Steffy, and Jennifer Veitch to define operational details, journal policies, and goals. Prof. DiLaura established high standards for editorial quality that I was fortunate to inherit and committed to maintain. His 2006 Report to the Readership provides additional background about the founding of LEUKOS and performance during its early years (DiLaura 2006).","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"74 1","pages":"111 - 117"},"PeriodicalIF":3.6,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85719166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Continuous Overcast Daylight Autonomy (DAo.con): A New Dynamic Metric for Sensor-Less Lighting Smart Controls 连续阴天日光自治(DAo.con):无传感器照明智能控制的新动态度量

IF 3.6 2区工程技术

Leukos Pub Date : 2023-01-19 DOI: 10.1080/15502724.2022.2135528

I. Acosta, M. Campano, Samuel Domínguez-Amarillo, J. Navarro Casas

{"title":"Continuous Overcast Daylight Autonomy (DAo.con): A New Dynamic Metric for Sensor-Less Lighting Smart Controls","authors":"I. Acosta, M. Campano, Samuel Domínguez-Amarillo, J. Navarro Casas","doi":"10.1080/15502724.2022.2135528","DOIUrl":"https://doi.org/10.1080/15502724.2022.2135528","url":null,"abstract":"ABSTRACT Daylight dynamic metrics are useful tools for quantifying the switch-on time or the dimming of electric lighting according to the architectural scenario. A variant of these metrics can also be used to define strategies to control the lighting fixtures, dimming the luminous flux with no need for external input and reducing therefore the energy consumption of the lighting systems. Given this context, a new approach is proposed, Continuous Overcast Daylight Autonomy (DAo.con), defined as the percentage of occupied time when an illuminance threshold is met by daylight alone under continuous overcast sky conditions, considering a partial credit linearly to values below the threshold defined. This concept acts as an algorithm which adjusts the luminous flux of the luminaires according to the Daylight Factors measured or simulated, considering user requirements and ignoring any internal device for actively measuring the lighting conditions. The Daylight Factors can be modified according to the use of shading devices that affect to the indoor natural light. Accordingly, this algorithm can significantly reduce the embodied cost of the lighting smart controls, promoting their spread and its implementation in building refurbishment, while the energy consumption in electric lighting is reduced by up to 76% for large windows and by up to 65% for medium-sized openings. The results show that the use of this algorithm in office environments with LED fixtures can promote energy savings of up to 7.8 W/m2 for locations with predominantly clear skies and up to 5.7 W/m2 for northern latitudes with mainly overcast skies.","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"58 1","pages":"343 - 367"},"PeriodicalIF":3.6,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90507788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Specifying Non-White Light Sources in Outdoor Applications to Reduce Light Pollution 在户外应用中指定非白光光源，以减少光污染

IF 3.6 2区工程技术

Leukos Pub Date : 2023-01-05 DOI: 10.1080/15502724.2022.2121285

T. Esposito, L. Radetsky

引用次数: 1

A Novel Approach for the Assessment of the Nocturnal Image of the Cultural Landscape 文化景观夜间影像评价的新方法

IF 3.6 2区工程技术

Leukos Pub Date : 2023-01-02 DOI: 10.1080/15502724.2022.2057325

Lodovica Valetti, Franco Pellerey, A. Pellegrino

{"title":"A Novel Approach for the Assessment of the Nocturnal Image of the Cultural Landscape","authors":"Lodovica Valetti, Franco Pellerey, A. Pellegrino","doi":"10.1080/15502724.2022.2057325","DOIUrl":"https://doi.org/10.1080/15502724.2022.2057325","url":null,"abstract":"ABSTRACT Policies aimed at urban and territorial development stressed the importance of landscape as a significant resource for sustainable and economic development. In this perspective, research on landscape visual values and people preferences can support the enhancement of the global values of territories. Currently, the theoretical framework and approaches are mainly limited to the day images of sites, while nighttime landscape is not usually considered. In this study, we defined a methodological approach to address the analysis of the nocturnal image of cultural landscape contexts, in order to define indications and support the inclusion of visual values in the process of public lighting design. The approach was conceived for territorial contexts characterized by the presence of small urban settlements located in prominent positions and involved a subjective survey, an in-field measurement campaign, and statistical analysis to identify significant correlations between subjective judgments and quantitative parameters. The effectiveness of the approach was assessed through the application to a case study. The study allowed identifying subjective factors (overall impact, architecture and historicity, correspondence, alteration) and objective parameters (ratios of regions’ area, luminance values, and luminance contrasts) which describe the nightscape of cultural landscape. Results demonstrated the presence of significant correlation between subjective factors and objective parameters. The application of the method could provide designers and planners indications useful for the design of outdoor lighting system, in order to include perceptual aspects in a holistic design approach, which promotes environmental, energy, economic, and cultural sustainability.","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"123 1","pages":"71 - 93"},"PeriodicalIF":3.6,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77571874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Capturing Luminous Flux Entering Human Eyes with a Camera, Part 1: Fundamentals 用相机捕捉进入人眼的光通量，第1部分:基础知识

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-29 DOI: 10.1080/15502724.2022.2147942

Siqi He, Hankun Li, Yonghong Yan, H. Cai

引用次数: 3

Eco-redesign of Lighting Products 照明产品的生态再设计

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-26 DOI: 10.1080/15502724.2022.2131437

J. Casamayor, D. Su, You Wu

{"title":"Eco-redesign of Lighting Products","authors":"J. Casamayor, D. Su, You Wu","doi":"10.1080/15502724.2022.2131437","DOIUrl":"https://doi.org/10.1080/15502724.2022.2131437","url":null,"abstract":"ABSTRACT Although there are numerous published studies that have helped to enhance our understanding about methods or approaches to eco-design products, there are limited publications that focus on the study of eco-redesign of lighting products. Redesign of existing products is one of the most applied design-related activities in industry, and eco-redesign is one of the most suitable eco-design interventions that can be applied by manufacturers when they want to include environmental considerations in their existing products. This type of eco-design intervention is incremental, which typically means less change, and therefore, lower investments of time, money, and correspondent risks. It consists of selecting an existing product from a given portfolio and redesigning it to reduce its environmental impact. This paper presents and demonstrates, with an example of a manufacturing company, a method to eco-redesign lighting products. The method is based in the iterative combination of an analysis-synthesis approach involving: (1) Life Cycle Assessment (LCA) to assess the environmental impact of the lighting product, (2) Identification of the specific issues which typically cause the impact in the product life cycle stages and components, and (3) Specific eco-lighting design strategies to address the areas of impact (and causes of that impact) identified with the LCA. This method can be applied as a stand-alone method or be integrated into existing design and development processes and methods already used by companies, to facilitate its adoption, and hence impact. Insights and limitations after the application of the method are also discussed.","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"23 1","pages":"324 - 342"},"PeriodicalIF":3.6,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72963846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Recommendations on the Correlated Color Temperature of Light Sources for Traditional Chinese Paper Relics in Museums 博物馆中国传统纸质文物光源相关色温的建议

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-16 DOI: 10.1080/15502724.2022.2143370

R. Dang, W. Liu, Huijiao Tan

引用次数: 0

Evaluating Luminance Uniformity Metrics Using Online Experiments 利用在线实验评估亮度均匀性指标

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-15 DOI: 10.1080/15502724.2022.2133964

B. Abboushi, L. Irvin, E. Rodriguez-Feo Bermudez, Michael Royer

引用次数: 0

A Grid in Perspective for Road Lighting Calculations 道路照明计算的透视网格

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-15 DOI: 10.1080/15502724.2022.2135529

F. Greffier, V. Boucher, V. Muzet, Sandy Buschmann, S. Völker

引用次数: 1

Modelling the Probability of Discomfort Due to Glare at All Levels: The Case of Outdoor Lighting 模拟因各级眩光引起的不适的可能性:以户外照明为例

IF 3.6 2区工程技术

Leukos Pub Date : 2022-12-13 DOI: 10.1080/15502724.2022.2142133

Joffrey Girard, C. Villa, R. Brémond

{"title":"Modelling the Probability of Discomfort Due to Glare at All Levels: The Case of Outdoor Lighting","authors":"Joffrey Girard, C. Villa, R. Brémond","doi":"10.1080/15502724.2022.2142133","DOIUrl":"https://doi.org/10.1080/15502724.2022.2142133","url":null,"abstract":"ABSTRACT To limit glare, lighting engineers need to estimate the level of discomfort produced by a lighting installation. Outdoor, most discomfort glare models predict a mean level of discomfort on a judgment scale, which corresponds to a “mean road user.” However, in real life, the inter-individual variability of the sensitivity to glare is large; predicting the mean discomfort does not describe the full pattern of responses in a population. We propose a methodology to model the Discomfort Level, computing the probabilities that an observer reports any of the levels of a discomfort scale. This methodology is demonstrated for outdoor lighting, where no probabilistic model is available. Using a dedicated psychophysical experiment, we extend the results of a previous study where a formula was proposed to compute the Glare Excitation due to a multi-source stimulus, at the Borderline between Comfort and Discomfort (BCD), with a background luminance consistent with outdoor lighting. This formula is first extended to other discomfort levels and background luminance levels, and strengthened thanks to a different experimental protocol and to the use of up to 10 glare sources simultaneously. From this experiment, a formula of the Glare Excitation is proposed in the range of outdoor lighting. Then, a probabilistic model of the Discomfort Level is proposed, allowing computing the probability of ratings at each level of an ordinal scale from the Glare Excitation computed with our formula. It is hoped that the proposed model avoids most of the modeling methodological caveats of previous discomfort glare models.","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"48 1","pages":"368 - 388"},"PeriodicalIF":3.6,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79090998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0