Comment 3 on ‘The subjective response to linear fluorescent direct/indirect lighting systems’ by KW Houser, DK Tiller, CA Bernecker and RG Mistrick

A comparative field survey of the effects of two alternative lighting systems, a parabolic downlighting system and a ceiling suspended, lensed- indirect lighting system, on computer workers in a virtually windowless office was conducted. A questionnaire, collecting data on work content, perception of ambient environmental conditions including office lighting, work-related health symptoms, job stress and job satisfaction, and self-reported productivity was completed by 96 workers. Results show that the lensed-indirect lighting system was rated significantly more favorably on several subjective lighting quality scales, and significantly more appropriate for computer based work. Workers reported less problems with glare on their computer screen and with work being hindered, fewer eye problems (tired eyes, trouble focusing eyes), better productivity, and significantly higher satisfaction for the lensed-indirect system compared with parabolic lighting.

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Review of the cone-to-rod efficiency ratio as a specification for lighting systems.

PsycEXTRA Dataset ◽

10.1037/e462652004-001 ◽

1957 ◽

Author(s):

John Lott Brown

Keyword(s):

Efficiency Ratio ◽

Lighting Systems

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Erratum: Dimensionality of subjective response to a selection of complex aversive stimuli.

Canadian Journal of Behavioural Science/Revue canadienne des sciences du comportement ◽

10.1037/h0081889 ◽

1974 ◽

Vol 6 (4) ◽

Author(s):

Richard W. J. Neufeld ◽

Park O. Davidson

Keyword(s):

Subjective Response ◽

Aversive Stimuli ◽

Selection Of

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Supplemental Material for The Prospective Interactive Effects of Alcohol Expectancies and Subjective Response on Future Drinking Behavior

Experimental and Clinical Psychopharmacology ◽

10.1037/pha0000430.supp ◽

2020 ◽

Keyword(s):

Drinking Behavior ◽

Alcohol Expectancies ◽

Interactive Effects ◽

Subjective Response

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Organic Light Emitting Diodes - Innovative Light Sources

Light & Engineering ◽

10.33383/2018-157 ◽

2019 ◽

pp. 101-107

Author(s):

Sergei A. Stakharny

Keyword(s):

Light Source ◽

Organic Light Emitting Diodes ◽

Organic Leds ◽

Light Sources ◽

High Quality ◽

Light Emitting ◽

Organic Light ◽

Lighting Systems ◽

Physical Principles ◽

Prospects Of Application

This article is a review of the new light source – organic LEDs having prospects of application in general and special lighting systems. The article describes physical principles of operation of organic LEDs, their advantages and principal differences from conventional non-organic LEDs and other light sources. Also the article devoted to contemporary achievements and prospects of development of this field in the spheres of both general and museum lighting as well as other spheres where properties of organic LEDs as high-quality light sources may be extremely useful.

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Research into the Effect of Photometric Flicker Event on the Perception of Office Workers

Light & Engineering ◽

10.33383/2019-022 ◽

2019 ◽

pp. 22-27

Author(s):

Cenk Yavuz ◽

Ceyda Aksoy Tırmıkç ◽

Burcu Çarklı Yavuz

Keyword(s):

Experimental Work ◽

Psychological Problems ◽

Office Workers ◽

Questionnaire Study ◽

Fast Growing ◽

Lighting Conditions ◽

Lighting Systems ◽

Enormous Number

Today the number of office workers has reached to an enormous number due to the fast-growing technology. Most of these office workers spend long hours in enclosed spaces with little/no daylight penetration. The lack of daylight causes physiological and psychological problems with the workers. At this point lighting systems become prominent as the source and the solution of the problem. Photometric flicker event which arises in the lighting systems can sometimes become visible and brings a lot of issues with it. In this paper, an experimental work has been done to investigate the effect of flicker. For this purpose, the flicker values of 3 different experiment rooms for different lighting conditions and scenarios have been measured and a questionnaire study has been carried out in the experiment rooms with 30 participants. In conclusion, the effect of the flicker event on the volunteers have been classified and some methods have been proposed not to experience flicker effects.

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Luminous Environment and the Perceived Environment

Light & Engineering ◽

10.33383/2019-010 ◽

2019 ◽

pp. 15-21

Author(s):

Banu Manav

Keyword(s):

Experimental Studies ◽

Light Output ◽

Lighting Design ◽

Lighting System ◽

Main Concept ◽

Healthy Environment ◽

Perceived Environment ◽

Efficiency Cost ◽

Lighting Systems ◽

User Friendly

In lighting design, the main concept is to achieve a healthy environment, which addresses energy efficiency, cost, maintenance, and quality. User-friendly lighting systems shall be adopted to architecture and interior architecture. User control over the lighting system is important, by dimming or increasing light output, by changing the colour of the light sets the inner atmosphere and affects user mood. Standards and codes on lighting shall also be evaluated by means of these topics. The paper aims to analyse how the luminous environment is affective on the perceived environment. Hence, a series of experimental studies and recent research will be evaluated in regard to understanding and designing luminous environment.

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