Готові списки джерел за темами / Glare Spatial Evaluation

Добірка наукової літератури з теми "Glare Spatial Evaluation"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Glare Spatial Evaluation"

Giovannini, Luigi, Fabio Favoino, Valerio Roberto Maria Lo Verso, Valentina Serra, and Anna Pellegrino. "GLANCE (GLare ANnual Classes Evaluation): An approach for a simplified spatial glare evaluation." Building and Environment 186 (December 2020): 107375. http://dx.doi.org/10.1016/j.buildenv.2020.107375.

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Safdar, M., M. Ronnier Luo, M. Farhan Mughal, S. Kuai, Y. Yang, L. Fu, and X. Zhu. "A neural response-based model to predict discomfort glare from luminance image." Lighting Research & Technology 50, no. 3 (October 25, 2016): 416–28. http://dx.doi.org/10.1177/1477153516675910.

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It is well known that one of the problems of the current method for discomfort glare evaluation, called the unified glare rating, is the non-uniform luminance of the glare source. This paper addresses this issue by considering the spatial contrast of luminance as a measure of non-uniformity. An image-based metric is proposed to evaluate discomfort glare by modeling the neural response of human vision. The model takes an absolute luminance image as input and predicts visual discomfort based on the spatial distribution of the luminance of the stimulus and the background. The developed model was tested to predict subjective glare ratings based on an experiment conducted using non-uniform LED sources with symmetric and asymmetric patterns of LEDs, and its performance was compared with the unified glare rating. As expected, the unified glare rating predictions correlated well with the subjective glare evaluations of luminaires with symmetric patterns of LEDs (as they appear less non-uniform) but not for those with asymmetric patterns. Results showed that the developed model, named the Neural Response-based Glare Model, gave similar performance to unified glare rating for symmetric patterns but outperformed UGR for asymmetric patterns of LEDs.

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Giovannini, Luigi, Fabio Favoino, Valerio Lo Verso, Anna Pellegrino, and Valentina Serra. "A Simplified Approach for the Annual and Spatial Evaluation of the Comfort Classes of Daylight Glare Using Vertical Illuminances." Buildings 8, no. 12 (December 5, 2018): 171. http://dx.doi.org/10.3390/buildings8120171.

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A simplified approach to calculate the daylight glare comfort class (imperceptible, perceptible, disturbing, or intolerable glare) on annual basis and for a grid of points in a space is presented. This method relies on the calculation of the vertical illuminance (Ev) for each grid point only, which is compared to an Ev threshold value for each daylight glare comfort class. These Ev threshold values are determined through a comparison with the Daylight Glare Probability (DGP) values on an annual basis through a fault-detection technique, for a reduced number of points. Compared to an annual calculation of exact DGP values on a certain grid, this approach is able to evaluate the daylight glare comfort classes only, but it is less time consuming. The paper presents and critically discusses this simplified method by means of its application to different case-studies: south and west oriented office in Turin (Lat 45.1° N), in which the DGP is assessed for three points in the space, considering glazing with different transmission properties (specular or scattering) and visible transmittances, as well as three operable internal shading systems (one venetian blinds and two roller blinds, for solar or glare control). For the presented case studies, the average error in the classification of the space according to daylight glare comfort classes is below 5% when comparing this simplified approach to related DGP values.

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Sidorova, Jelena, Rasa Čiumbaraitė, Džastina Čebatorienė, Mantas Banevičius, and Rasa Liutkevičienė. "Functional acuity contrast sensitivity assessment in young and middle age healthy persons at the day time with and without glare." Acta medica Lituanica 21, no. 1 (April 30, 2014): 21–25. http://dx.doi.org/10.6001/actamedica.v21i1.2885.

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Background. As people age, their vision becomes less clear; they can clearly see big objects but experience problems discerning minor things and minor details. The functional acuity contrast test is a very sensitive method used for visual system evaluation which may help to detect the beginning of the disease in case the visual acuity is still normal. Purpose. To determine functional acuity contrast sensitivity in young and in middle age healthy persons at the day time with and without glare. Materials and methods. We examined 40–49 yrs (Group 1), and 50– 59 yrs (Group 2) healthy persons. The typical Snellen chart (the direction of the gap in Landolt C) was used for the non-corrected and the bestcorrected visual acuity testing. Functional acuity contrast sensitivity was measured employing a Ginsburg Box, VSCR- CST-6500, at the day time with and without glare. Results. Functional acuity contrast sensitivity remained very similar in the age groups of 40–49 years and 50–59 years. However, statistically, it significantly decreased at day time without glare (18 cycle / degree) spatial frequencies (p = 0.05). Results in Group 1 as compared to Group 2 decreased from 3.09% to 51.7% at the day time without glare and from 2.16% to 11.61% at the day time with glare. Conclusion. The facts are that contrast sensitivity remained very similar in the age groups of 40–49 years and 50–59 years at the day time with and without glare.

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Özdemir, Hüseyin, and Bilgehan Yılmaz Çakmak. "Evaluation of Daylight and Glare Quality of Office Spaces with Flat and Dynamic Shading System Facades in Hot Arid Climate." Journal of Daylighting 9, no. 2 (October 8, 2022): 197–208. http://dx.doi.org/10.15627/jd.2022.15.

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There has been an increasing awareness in recent years about the evaluation of daylight and glare quality in buildings. In the study, an office space with a flat and a dynamic shading system facade (triangular cell facade) is discussed in the province of Mardin, which is in a hot and arid climate zone. Observing two different facade types in a single office space allows the study to be carried out in detail, and their suitability can be checked by producing quick design alternatives. The analysis and evaluation of daylight and glare quality over office spaces with two different facade types aims to develop an innovative approach. This objective is designed to respond to climatic conditions and contribute to the development of climate-sensitive designs. The study was parametrically simulated with the Grasshopper plugin and daylight plugin ClimateStudio tools in Rhino, an office space with both a flat facade and a dynamic shading system facade located in a hot-arid climate. As a result of the analysis, the dynamic shading system, which can transform according to the position of the sun, shows outputs in accordance with the LEEDv4 standard, minimizing the ASE value of the facade's annual sunlight exposure by up to 10%, while maximizing the spatial daylight autonomy sDA value by 60% or more. In addition, Daylight Glare Probability (DGP) values of 0.38 keep the visual quality affective. As a result, the office space with a dynamic shading system facade showed that it can significantly improve the flexibility of shading to control daylight measurements and glare, achieving the maximum level of visual comfort based on the LEEDv4 certificate.

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Fang, Yanwen, Yi Lu, Aizhu Miao, and Yi Luo. "Aspheric Intraocular Lenses Implantation for Cataract Patients with Extreme Myopia." ISRN Ophthalmology 2014 (March 19, 2014): 1–6. http://dx.doi.org/10.1155/2014/403432.

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Objective. To evaluate the postoperative visual quality of cataract patients with extreme myopia after implantation of aspheric intraocular lenses (IOLs). Methods. Thirty-three eyes were enrolled in this prospectivestudy. Eighteen eyes with an axial length longer than 28 mm were included in the extreme myopia group, and the other 15 eyes were included in the nonextreme myopia group. Phacoemulsification and aspheric IOL implantation were performed. Six months after cataract surgery, best-corrected visual acuity (BCVA), contrast sensitivity, and wavefront aberrations were measured, and subjective visual quality was assessed. Results. The BCVA improved significantly after surgery for both groups, and patients in the nonextreme myopia group achieved better postoperative BCVA due to better retinal status of the eyes. The evaluation of contrast sensitivity without glare was the same in both groups, whereas patients in the nonextreme myopia group performed better at intermediate spatial frequencies under glare conditions. The two groups did not show a significant difference in high-order aberrations. With regard to subjective visual quality, the composite scores of both groups did not differ significantly. Conclusions. Aspheric IOLs provided good visual outcomes in cataract patients with extreme myopia. These patients should undergo careful evaluation to determine the maculopathy severity level before surgery.

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Gil, Miguel Á., Consuelo Varón, Genis Cardona, and José A. Buil. "Far and Near Contrast Sensitivity and Quality of Vision with Six Presbyopia Correcting Intraocular Lenses." Journal of Clinical Medicine 11, no. 14 (July 17, 2022): 4150. http://dx.doi.org/10.3390/jcm11144150.

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Анотація:

The objective of this prospective, randomized, double-masked study was to compare the contrast sensitivity and quality of vision of patients bilaterally implanted with the following six different presbyopia correcting intraocular lenses (IOLs): SV25T0 (n = 19), ATLISA 809M (n = 18), ATLISA TRI 839MP (n = 19), ZKB00 (n = 20), ZLB00 (n = 20) and Symfony ZXR00 (n = 20). For comparison purposes, 36 patients were implanted with a monofocal lens (ZA9003). Contrast sensitivity was assessed binocularly at distance under photopic, mesopic and mesopic plus glare conditions, and at near under photopic conditions. Quality of vision was explored in terms of photic phenomena and spectacle independence. Overall, the monofocal lens offered better contrast sensitivity, under all illumination conditions, and less occurrence and intensity of photic phenomena. Amongst the multifocal IOL (MIOL) designs, the extended depth of focus Symfony ZXR00 provided better contrast sensitivity than the other MIOLs, particularly at intermediate and high spatial frequencies. Up to 40% and 50% of patients implanted with MIOLs reported glare and halos, respectively. The SV25T0 resulted in less occurrence and intensity of halos. The evaluation of photic phenomena and contrast sensitivity under different illumination conditions may reflect real-life, visually challenging situations, and thus provide insightful information to assist ophthalmic surgeons when selecting the best intraocular lens for their patients.

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Liu, Qibo, Xiao Han, Yuheng Yan, and Juan Ren. "A Parametric Design Method for the Lighting Environment of a Library Building Based on Building Performance Evaluation." Energies 16, no. 2 (January 11, 2023): 832. http://dx.doi.org/10.3390/en16020832.

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The lighting conditions of a library directly affect the users’ spatial experience, with glass curtain walls being widely used in the design of library skins. Although glass curtain walls have been extensively adopted, they increase indoor sun exposure and glare. Considering sunlight duration and radiation as the design basis, this study employs the Rhino and Grasshopper parametric platforms to parametrically design a library with a dynamic shading skin. Specifically, our design utilizes modular shading components that can change depending on the simulated sunlight data at different times. Additionally, a new optimal design strategy has been developed to enhance the environmental lighting performance of the library. The simulation results highlight that the indoor environmental lighting performance, under dynamic epidermal shading and based on sunlight duration data, is better for east–west, north–south, and east–west orientations on the summer solstice and the winter solstice. Meanwhile, the indoor environmental lighting performance, under dynamic epidermal shading based on daylight radiation data, is better for north–south orientation on the winter solstice. Overall, this study uses parameterization to integrate building simulation and architectural design to improve a building’s lighting performance.

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Syarifah ; Ariani Mandala, Syadza. "DESIGN EVALUATION OF WINDOW DESIGN TO DAYLIGHT EFFICACY IN IBU DAN ANAK MELINDA HOSPITAL’S INPATIENT ROOM, BANDUNG." Riset Arsitektur (RISA) 3, no. 01 (February 7, 2019): 71–86. http://dx.doi.org/10.26593/risa.v3i01.3178.71-86.

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Abstract- Daylight performance in patient room is very important. Which in this research, daylight performanceis measured by its distribution, daylight factor and glare precaution. Those elements are calculated according tolighting standard for the hospital building and how the performance adapt to patient's visual comfort. Thereforewindow design is needed to be considered as its affected to daylight performance inside the room. The objectobservation shows a result of the contradiction between each combination of window design and room plan.This research evaluates how window design affects the performance of natural lighting and analyzewhich window design suitable for each room plans, and also the alternative design that will be more suitable forsome rooms’ plan and condition.This research is conducted by explanatory method, with quantitative and qualitative approach. Veluxvisualizer software is used to simulate how natural light is distributed to the inpatient room.Obtained data shows that natural lighting performance in RSIA Melinda inpatient room is still belowthe determined standard. And noticed that room orientation, window position and dimension, exterior existingconditions are factors that affected the daylight performance. The design recommendations are sun shading andglazing material. Design recommendations are given to the majority room type and also in consideration of thedesign applicable possibility.Key Words: window design, daylight, inpatient room, spatial arrangement

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Hassan, Fayrouz H. F., Khaled A. Y. Ali, and Salwa A. M. Ahmed. "Biomimicry as an Approach to Improve Daylighting Performance in Office Buildings in Assiut City, Egypt." Journal of Daylighting 10, no. 1 (February 12, 2023): 1–16. http://dx.doi.org/10.15627/jd.2023.1.

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Biomimicry inspired architects to solve complex design problems and develop adaptive solutions for enhancing the environmental quality. Fields of inspiration include energy efficiency, natural ventilation, daylighting, and structural stability. In this paper, 144 biomimicry-inspired building skin alternatives have been developed to improve daylighting performance in office buildings in Assiut City, Egypt; 72 alternatives are of 0.5 m frame depth, and other 72 alternatives are of 1.0 m frame depth. Two levels of biomimicry; namely, the organism level (snakeskin) and the behavior level (plants tropism), have been adopted. Alternatives have been developed to be simulated ClimateStudio plug-in for Rhino in accordance with the international rating system leadership in energy and environmental design (LEED v4.1). The evaluation criteria are spatial Daylight Autonomy (sDA), Annual Sunlight Exposure (ASE), Annual Average Lux (AAl), and Spatial Distributing Glare (sDG). An evaluation point system has been developed to evaluate alternatives using Analytical Hierarchy Process (AHP) based on the feedback of 14 faculty of architecture members. Nine building skin alternatives developed succeeded to achieve notable improvement (from 16.69% to 33.73%) compared to the base cases. In general, the 1.0 m frame-depth alternatives achieved better results in improving daylighting performance than the 0.5 m frame-depth alternatives. The most effective parameter in improving daylighting performance was the rotation angle of the skin unit used, to be followed by the distance between the skin and the building façade, the solid-to-void ratio of the skin, the number of units constituting the skin system, and the horizontal bending distance of the skin unit, respectively.

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Тези доповідей конференцій з теми "Glare Spatial Evaluation"

Rubin, Gary S., Ingrid A. Adamsons, and Hugh R. Taylor. "The Effect of Cataract Type on Glare and Contrast Sensitivity." In Noninvasive Assessment of the Visual System. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/navs.1991.wd1.

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It is well established that visual acuity underestimates visual impairment due to mild cataract. The principal effect of a cataract is presumed to be an increase in intraocular light scatter which acts as a veiling luminance to reduce retinal image contrast. Glare and contrast sensitivity tests are more sensitive to the effects of intraocular light scatter than tests of visual resolution (acuity), and have been widely promoted for the evaluation of cataracts. In a recent study, Elliott et al1 reported that posterior subcapsular cataracts (PSC) differed from other cataract types in causing greater loss of contrast sensitivity at low spatial frequencies and greater sensitivity to glare. The purpose of this study is to investigate how different types of cataract affect glare and contrast sensitivity.

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Quek, Geraldine, Stephen Wasilewski, Jan Wienold, and Marilyne Andersen. "Spatial evaluation of potential saturation and contrast effects of discomfort glare in an open-plan office." In 2021 Building Simulation Conference. KU Leuven, 2021. http://dx.doi.org/10.26868/25222708.2021.30514.

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