Pub Date : 2024-04-17DOI: 10.1080/15502724.2024.2328210
Laure Lebouc, Paul Richard, Vincent Boucher, Florian Greffier, Aurélia Nicolaï
We present a study of the influence of the travel modality (pedestrian, cyclist, motorist) on the observation angle of road surfaces in a nighttime situation under public lighting. This study is ba...
{"title":"Study in a Virtual Night Environment of the Influence of the Travel Mode on the Observation Angle of Illuminated Road Surfaces","authors":"Laure Lebouc, Paul Richard, Vincent Boucher, Florian Greffier, Aurélia Nicolaï","doi":"10.1080/15502724.2024.2328210","DOIUrl":"https://doi.org/10.1080/15502724.2024.2328210","url":null,"abstract":"We present a study of the influence of the travel modality (pedestrian, cyclist, motorist) on the observation angle of road surfaces in a nighttime situation under public lighting. This study is ba...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"48 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611173","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}
Pub Date : 2024-04-17DOI: 10.1080/15502724.2024.2327863
Belal Abboushi, Naomi J. Miller, Eduardo Rodriguez-Feo Bermudez, Lia Irvin, Michael Royer
The position index was developed by Luckiesh and Guth in 1949 and is widely used in discomfort glare models to account for the position of the glare source when predicting the presence and magnitud...
{"title":"The Position Index of Overhead LED Sources Under Different Spectral Power Distributions and Background Luminances","authors":"Belal Abboushi, Naomi J. Miller, Eduardo Rodriguez-Feo Bermudez, Lia Irvin, Michael Royer","doi":"10.1080/15502724.2024.2327863","DOIUrl":"https://doi.org/10.1080/15502724.2024.2327863","url":null,"abstract":"The position index was developed by Luckiesh and Guth in 1949 and is widely used in discomfort glare models to account for the position of the glare source when predicting the presence and magnitud...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"12 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140611145","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}
Pub Date : 2024-02-28DOI: 10.1080/15502724.2023.2296863
Grégory Hammad, Katharina Wulff, Debra J. Skene, Mirjam Münch, Manuel Spitschan
Light exposure fundamentally influences human physiology and behavior, with light being the most important zeitgeber of the circadian system. Throughout the day, people are exposed to various scene...
{"title":"Open-Source Python Module for the Analysis of Personalized Light Exposure Data from Wearable Light Loggers and Dosimeters","authors":"Grégory Hammad, Katharina Wulff, Debra J. Skene, Mirjam Münch, Manuel Spitschan","doi":"10.1080/15502724.2023.2296863","DOIUrl":"https://doi.org/10.1080/15502724.2023.2296863","url":null,"abstract":"Light exposure fundamentally influences human physiology and behavior, with light being the most important zeitgeber of the circadian system. Throughout the day, people are exposed to various scene...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"22 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140016613","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}
Pub Date : 2024-02-02DOI: 10.1080/15502724.2023.2293468
Li Zhou, Chao Ruan, Nuoyi Li, Dandan Hou, Christopher Weirich, Yandan Lin
Light has been demonstrated to influence transient mood states in healthy populations and can be used as a treatment for clinical mood disorders. However, it is still interesting to know whether st...
{"title":"The Effect of Light on Negative Emotion and Cognitive Regulation in Individuals with Depressive Tendencies","authors":"Li Zhou, Chao Ruan, Nuoyi Li, Dandan Hou, Christopher Weirich, Yandan Lin","doi":"10.1080/15502724.2023.2293468","DOIUrl":"https://doi.org/10.1080/15502724.2023.2293468","url":null,"abstract":"Light has been demonstrated to influence transient mood states in healthy populations and can be used as a treatment for clinical mood disorders. However, it is still interesting to know whether st...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"485 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139763839","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}
Pub Date : 2024-01-29DOI: 10.1080/15502724.2023.2290450
Sarah Safranek, Corey Strachan, Robert G. Davis
The goal of this study was to evaluate the use of new spectral simulation tool, Adaptive Lighting for Alertness (ALFA), by comparing software-predicted values of spectral irradiance, illuminance, a...
{"title":"Evaluating Emerging Spectral Lighting Software: Comparing Measurements of Light Spectrum and Derived Metrics in a One-Room Laboratory Environment with Simulation Results","authors":"Sarah Safranek, Corey Strachan, Robert G. Davis","doi":"10.1080/15502724.2023.2290450","DOIUrl":"https://doi.org/10.1080/15502724.2023.2290450","url":null,"abstract":"The goal of this study was to evaluate the use of new spectral simulation tool, Adaptive Lighting for Alertness (ALFA), by comparing software-predicted values of spectral irradiance, illuminance, a...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"13 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139764045","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}
Pub Date : 2024-01-29DOI: 10.1080/15502724.2023.2299210
Jennifer A. Veitch, Naomi J. Miller
Solid-state lighting systems can vary widely in the degree of temporal light modulation (TLM) of their light output. TLM is known to have visual, cognitive, and behavioral effects but there are few...
{"title":"Effects of Temporal Light Modulation on Individuals Sensitive to Pattern Glare","authors":"Jennifer A. Veitch, Naomi J. Miller","doi":"10.1080/15502724.2023.2299210","DOIUrl":"https://doi.org/10.1080/15502724.2023.2299210","url":null,"abstract":"Solid-state lighting systems can vary widely in the degree of temporal light modulation (TLM) of their light output. TLM is known to have visual, cognitive, and behavioral effects but there are few...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"67 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139763838","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}
Non-image forming effects of electric light can be employed to address problems related to individuals’ productivity in isolated and confined extreme environments (ICEs). A systematic review and me...
{"title":"Diurnal Intervention Effects of Electric Lighting on Alertness, Cognition, and Mood in Healthy Individuals: A Systematic Review and Meta-Analysis","authors":"YanJie Li, WeiNing Fang, HanZhao Qiu, WenLi Dong, JianXin Wang, HaiFeng Bao","doi":"10.1080/15502724.2023.2279946","DOIUrl":"https://doi.org/10.1080/15502724.2023.2279946","url":null,"abstract":"Non-image forming effects of electric light can be employed to address problems related to individuals’ productivity in isolated and confined extreme environments (ICEs). A systematic review and me...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"77 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138546800","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}
Pub Date : 2023-11-30DOI: 10.1080/15502724.2023.2279517
Siobhan Francois Rockcastle, Galen Sollom-Brotherton Whalen, Aaron Milgrim, Robert Davis
This paper introduces the results of an experiment on lighting perception and reading speed where data collected in a physical space is compared to that collected in representations of that space s...
{"title":"The Use of Virtual Screens in Perceptual Studies on Electric Light: A Comparison Between 2D, Panoramic, Cardboard, and Head-Mounted Displays","authors":"Siobhan Francois Rockcastle, Galen Sollom-Brotherton Whalen, Aaron Milgrim, Robert Davis","doi":"10.1080/15502724.2023.2279517","DOIUrl":"https://doi.org/10.1080/15502724.2023.2279517","url":null,"abstract":"This paper introduces the results of an experiment on lighting perception and reading speed where data collected in a physical space is compared to that collected in representations of that space s...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"66 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138512873","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}
Pub Date : 2023-11-16DOI: 10.1080/15502724.2023.2263174
Shining Ma, Ming Ronnier Luo, Ruoduan Sun, Yue Liu, Yongtian Wang, Weitao Song
Chromatic adaptation is an important visual phenomenon that specifically influences color appearance under various illumination conditions. There were extensive studies investigating the impact of ...
色彩适应是一种重要的视觉现象，它在不同的光照条件下会影响颜色的外观。有广泛的研究调查……的影响。
{"title":"The Impact of Target Object Size and Dimensionality on the Degree of Adaptation to Global Illumination","authors":"Shining Ma, Ming Ronnier Luo, Ruoduan Sun, Yue Liu, Yongtian Wang, Weitao Song","doi":"10.1080/15502724.2023.2263174","DOIUrl":"https://doi.org/10.1080/15502724.2023.2263174","url":null,"abstract":"Chromatic adaptation is an important visual phenomenon that specifically influences color appearance under various illumination conditions. There were extensive studies investigating the impact of ...","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"76 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138542291","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}
Pub Date : 2023-10-24DOI: 10.1080/15502724.2023.2262148
Fedaa Abd-Alhamid, Michael Kent, Yupeng Wu
ABSTRACTWindow views are key factors that affect buildings’ occupants psychological and physiological comfort and wellbeing. Window design should consider the holistic impacts on building energy, lighting performance, and the connection to the outdoors provided by the view which is usually overlooked. In this study, view perception, stress recovery, physiological, and psychological affect were evaluated in virtual environments of five different conditions varying the physical dimensions of a window located in the same office space with an urban view. This allowed three window-to-wall ratios (i.e. 10%, 20%, and 30%) and two different window layouts (i.e. narrow and wide) to be compared. Twenty-five participants were recruited. Subjective self-assessments on view perception (e.g. content and complexity), self-assessment and physiological measures (e.g. skin conductance and heart rate variability) stress recovery besides psychological affect were measured. Participants performed a Stroop-test to induce stress that was immediately followed by a period of recovery facilitated by exposure to one of the five window conditions. Results showed that increased window size advocated higher view perception assessments, increased stress recovery, and positive psychological affect. Measurements of skin conductance and heart rate variability also corroborated these findings. Differences in window layout were also revealed, but only for 10% WWRs. Therefore, WWR is not a reliable indicator for view perception for small window sizes, indicating that layout preference is dependent on window size. This study highlights the importance of considering view perception for occupant health and wellbeing when sizing window openings, since these may not necessarily align with other design criteria.KEYWORDS: Window viewvisual perceptionvirtual reality (VR)daylightingstress recovery AcknowledgmentsThe authors would like to extend their thanks to Al-Zaytoonah University of Jordan and to all participants who took part in the experiment.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Engineering and Physical Sciences Research Council, UK [grant number EP/S030786/1].
{"title":"Assessment of Window Size and Layout Impact on a View Quality Perception in a Virtual Reality Environment","authors":"Fedaa Abd-Alhamid, Michael Kent, Yupeng Wu","doi":"10.1080/15502724.2023.2262148","DOIUrl":"https://doi.org/10.1080/15502724.2023.2262148","url":null,"abstract":"ABSTRACTWindow views are key factors that affect buildings’ occupants psychological and physiological comfort and wellbeing. Window design should consider the holistic impacts on building energy, lighting performance, and the connection to the outdoors provided by the view which is usually overlooked. In this study, view perception, stress recovery, physiological, and psychological affect were evaluated in virtual environments of five different conditions varying the physical dimensions of a window located in the same office space with an urban view. This allowed three window-to-wall ratios (i.e. 10%, 20%, and 30%) and two different window layouts (i.e. narrow and wide) to be compared. Twenty-five participants were recruited. Subjective self-assessments on view perception (e.g. content and complexity), self-assessment and physiological measures (e.g. skin conductance and heart rate variability) stress recovery besides psychological affect were measured. Participants performed a Stroop-test to induce stress that was immediately followed by a period of recovery facilitated by exposure to one of the five window conditions. Results showed that increased window size advocated higher view perception assessments, increased stress recovery, and positive psychological affect. Measurements of skin conductance and heart rate variability also corroborated these findings. Differences in window layout were also revealed, but only for 10% WWRs. Therefore, WWR is not a reliable indicator for view perception for small window sizes, indicating that layout preference is dependent on window size. This study highlights the importance of considering view perception for occupant health and wellbeing when sizing window openings, since these may not necessarily align with other design criteria.KEYWORDS: Window viewvisual perceptionvirtual reality (VR)daylightingstress recovery AcknowledgmentsThe authors would like to extend their thanks to Al-Zaytoonah University of Jordan and to all participants who took part in the experiment.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Engineering and Physical Sciences Research Council, UK [grant number EP/S030786/1].","PeriodicalId":49911,"journal":{"name":"Leukos","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135316312","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}
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