IF 3.6 2区工程技术

Leukos Pub Date : 2023-07-12 DOI: 10.1080/15502724.2023.2219017

A. Nixon, R. Robillard, C. Leveille, A. Douglass, M. Porteous, J. Veitch

引用次数: 0

The Influence of Vertical Illuminance on Cognitive Performance and Subjective Evaluations during Simulated Conditions of Polar-Night Specificity 垂直照度对极夜特异性模拟条件下认知表现和主观评价的影响

IF 3.6 2区工程技术

Leukos Pub Date : 2023-06-15 DOI: 10.1080/15502724.2023.2220926

Huiling Cai, Qingcheng Lin, Hanwei Liu, Maocang Tian, Xuefeng Li, Hui Xiao

引用次数: 0

Optimizing Presence Sensing Lighting for Energy Efficiency and User Behavioral Needs in Small Swedish Homes 优化存在感照明能源效率和用户行为需求的小型瑞典家庭

2区工程技术

Leukos Pub Date : 2023-05-30 DOI: 10.1080/15502724.2023.2198670

RatnaKala Sithravel, Thomas Olsson, Myriam Aries

{"title":"Optimizing Presence Sensing Lighting for Energy Efficiency and User Behavioral Needs in Small Swedish Homes","authors":"RatnaKala Sithravel, Thomas Olsson, Myriam Aries","doi":"10.1080/15502724.2023.2198670","DOIUrl":"https://doi.org/10.1080/15502724.2023.2198670","url":null,"abstract":"A hybrid workstyle is becoming more common post-COVID-19, and longer occupancy hours at home are increasing household electricity consumption. Small homes are regarded as a potential for improving energy efficiency in the residential sector, and a home consists of mixed-function spaces with dynamic occupancy behaviors. These underpin the opportunity to optimize presence sensing lighting in small homes for energy efficiency and user-behavioral needs. A comprehensive overview of presence sensing approaches, comparing four types of non-wearable sensors connected to home lighting is made. A bibliometric mapping of the reviewed literature visually reinforces a significant research gap that presence sensing studies were not connected to home lighting but inclined toward the commercial and institutional context. Next, a non-exhaustive example of commercially available presence sensing products applicable to residential lighting for small homes is analyzed, and their general characteristics and technologies are synthesized. The literature and product overview identified five significant product knowledge gaps. Incorporating the gathered information leads to the proposal of a conceptual flexible radar-based sensor (prototype design), addressing a wish list with three important criteria to optimize future presence sensing lighting in a mixed-function small home. Future radar sensing studies are expected to develop an anticipatory lighting system that processes real-time multi-user vital signals for smarter localized and personalized lighting options for (small) living environments.","PeriodicalId":49911,"journal":{"name":"Leukos","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135692569","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

Effects of Temporal Light Modulation on Cognitive Performance,Eye Movements, and Brain Function 时间光调制对认知表现、眼动和脑功能的影响

IF 3.6 2区工程技术

Leukos Pub Date : 2023-04-18 DOI: 10.1080/15502724.2023.2170883

J. Veitch, Patricia Van Roon, A. D’Angiulli, Arnold J. Wilkins, Brad Lehman, Gregory J. Burns, E. Dikel

引用次数: 0

Modifications of the Robertson Method for Calculating Correlated Color Temperature to Improve Accuracy and Speed 对计算相关色温的罗伯逊方法的改进，以提高准确性和速度

IF 3.6 2区工程技术

Leukos Pub Date : 2023-03-02 DOI: 10.1080/15502724.2023.2166060

D. Baxter, Michael P. Royer, Kevin A. G. Smet

引用次数: 1

Capturing Luminous Flux Entering Human Eyes with a Camera, Part 2: A Field Verification Experiment 用相机捕捉进入人眼的光通量，第2部分:现场验证实验

IF 3.6 2区工程技术

Leukos Pub Date : 2023-02-13 DOI: 10.1080/15502724.2022.2160728

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

引用次数: 2

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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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

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