ORCID Profile
0000-0002-4430-3893
Current Organisations
University of Nottingham
,
Berkeley Education Alliance for Research in Singapore
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Publisher: SAGE Publications
Date: 03-08-2016
Abstract: Previous laboratory experiments have provided evidence of an effect of time of day on glare sensation. During the tests, temporal variables and personal factors were also measured to analyse their influence on levels of visual discomfort as the day progresses. The results revealed statistically significant and practically relevant tendencies towards greater tolerance to source luminance from artificial lighting at all times of day for earlier chronotypes and for participants not having ingested caffeine. No conclusive evidence was found for the effect of fatigue, sky condition and prior light exposure on glare sensation throughout the day. These findings suggest that temporal variables and personal factors should be measured in conjunction with visual discomfort levels to explore the causes of the wide in idual differences commonly associated with the subjective evaluation of glare sensation.
Publisher: Informa UK Limited
Date: 06-05-2022
Publisher: Elsevier BV
Date: 05-2018
Publisher: Informa UK Limited
Date: 11-2017
Publisher: SAGE Publications
Date: 13-10-2017
Abstract: Luminance adjustment is a procedure commonly used to evaluate discomfort glare and the results from adjustment experiments form the basis of some recommendations for limiting its occurrence. There are, however, strong reasons to expect that settings made using adjustment are unintentionally influenced by extraneous variables. This paper discusses bias towards the initial anchor, the setting of the variable stimulus immediately before an adjustment is made. Specifically, the initial luminance is expected to influence the setting that is made by adjustment for ex le, a lower initial luminance leads to a lower setting than a high initial luminance. To investigate anchor bias, a Hopkinson-like multiple-criterion adjustment experiment was undertaken, but with three different anchors. The results confirmed significant bias: glare settings were biased towards the luminance of the initial anchor. This demonstrates a need for caution when using adjustment to explore discomfort glare and when interpreting the results of past studies that used discomfort glare models fitted to data obtained with this procedure.
Publisher: SAGE Publications
Date: 21-08-2014
Abstract: There are strong reasons to suspect that glare sensation varies with the time of day. This study was designed to test whether such a relationship exists. Thirty subjects were exposed to an artificial light source four times of the day. The source luminance was progressively increased and subjects were required to give glare sensation votes corresponding to the level of visual discomfort experienced. Glare indices were calculated for every reported glare sensation vote, and the results were statistically analysed. The findings indicated a tendency towards greater tolerance to luminance increases in artificial lighting as the day progresses. This trend was found not to be statistically related to the possible confounding variable of learning, providing evidence of an effect of time of day on glare sensation.
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 02-2017
Publisher: Elsevier BV
Date: 2016
Publisher: Informa UK Limited
Date: 13-09-2018
Publisher: Informa UK Limited
Date: 14-06-2017
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 09-2023
Publisher: Elsevier BV
Date: 11-2021
Location: United Kingdom of Great Britain and Northern Ireland
Location: Singapore
No related grants have been discovered for Michael George Kent.