Parametric Study on the Comfort of Outdoor Wind Environment of Traditional Dwelling-----Taking Lius’ courtyard in Kaifeng As an Example

Liang, Chunhang; Lu, Yu; Liu, Xiaojun

doi:10.1088/1755-1315/768/1/012152

Cited by 4 publications

(2 citation statements)

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“…Since clarity and comfort themselves vary from person to person, it is a relatively subjective concept. At present, there is no clear regulation on the brightness value in the field of vision of the multimedia classroom, which is the value of visual clarity and visual comfort [18]. erefore, taking visual comfort as an example (the same can be used for visual clarity), this paper proposes a threshold limit value of 50% obtained when the subjective evaluation score is greater than or equal to 4, which is a higher standard value of visual comfort for the brightness parameter of the light environment in multimedia classrooms; when the subjective evaluation score is less than or equal to 2, the 50% threshold limit value obtained is the value that starts to cause visual discomfort.…”

Section: Results Analysismentioning

confidence: 99%

The Evaluation of Visual Clarity and Comfort of Light Environment in Multimedia Classroom

Dong

2022

Journal of Robotics

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In order to clarify the quantitative relationship between students’ visual clarity, comfort, and environmental brightness in the light environment of multimedia classrooms in colleges and universities and obtain the threshold and influence trends of brightness, visual clarity, and visual comfort in the light environment of the multimedia classroom, this paper proposes the research on the relevant influence parameters of the light environment of the multimedia classroom. Based on the analysis of the current situation of multimedia use in China, this paper proposes taking brightness as the main parameter of indoor light environment evaluation to carry out students’ subjective evaluation experiments. The brightness range that can reflect the visual clarity and visual comfort of the experimenter is extracted by using multimedia combined with screen projection and HDRI technology. Finally, by analyzing the experimental data, combined with the operational definition of the psychophysical threshold, the functional relationship between visual clarity, comfort, and brightness in the light environment of a multimedia classroom is obtained through regression analysis and the threshold and extreme point data are calculated. The experimental results show that when the brightness range is 370.83 cd/m2 ≤ X ≤ 558.47 cd/m2, it has better visual clarity and visual comfort. When the brightness contrast is close to 10 : 1, the visual clarity is the highest; when the brightness contrast is close to 5 : 1, the visual comfort is the highest and decreases on both sides with the change in its value. Conclusion. The results of this experimental study can provide a basis for formulating and revising relevant laws and regulations in the future and provide a reference for the light environment design of multimedia classrooms in China.

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Section: Results Analysismentioning

confidence: 99%

The Evaluation of Visual Clarity and Comfort of Light Environment in Multimedia Classroom

Dong

2022

Journal of Robotics

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“…Since visual comfort itself is subjective and varies from person to person, there is currently no definitive standard for the parameter values within the virtual classroom field of view that correspond to visual comfort [34] . Therefore, we propose a threshold value of 50% for subjective evaluation scores greater than or equal to 4, which represents a relatively high standard of visual comfort for brightness perception in the virtual classroom lighting environment.…”

Section: Threshold Calculationmentioning

confidence: 99%

Empirical study of lighting environment towards visual comfort in virtual multimedia classroom

Pan,

Wang,

Liu

et al. 2024

Fourth International Conference on Machine Learning and Computer Application (ICMLCA 2023)

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Virtual reality technology has been widely used in education scenarios. Among them, the immersive virtual multimedia classroom can mimic the physical classroom, so as to facilitate the performance of on-line learning. However, there are still gaps between the virtual and physical classroom, especially the lighting environment which plays an important role in the visual experience of participants. In this paper, we aim to study the relationship between the lighting parameters and the visual comfort. We firstly establish a virtual classroom with adjustable lighting parameters. Then we conduct user cases which mimic the natural and indoor lighting respectively, investigating the effect of the two different lighting environments upon the visual comfort. Particularly, we establish the empirical fitting models from the collected subjective ratings, which can provide the perception threshold and the optimal lighting conditions. The proposed method can benefit the design and implementation of virtual multimedia classroom.

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Feasibility study of an integrated air source heat pump water heater/chillers and exhaust gas boiler heating system for swimming pool on luxury cruise ship

Parametric Study on the Comfort of Outdoor Wind Environment of Traditional Dwelling-----Taking Lius’ courtyard in Kaifeng As an Example

Cited by 4 publications

References 0 publications

The Evaluation of Visual Clarity and Comfort of Light Environment in Multimedia Classroom

The Evaluation of Visual Clarity and Comfort of Light Environment in Multimedia Classroom

Empirical study of lighting environment towards visual comfort in virtual multimedia classroom

Feasibility study of an integrated air source heat pump water heater/chillers and exhaust gas boiler heating system for swimming pool on luxury cruise ship

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