Lighting Design Research Articles

The Development of Performing Arts to Promote Local Identity in Supporting Tourists in Pathum Thani Province

This research aimed to: 1) explore the identity of local arts and culture in Pathum Thani Province, and 2) develop performing arts based on local identity to support tourism in the region. Employing qualitative research methods, the study utilized document analysis, media reviews, field surveys, structured interviews, and data triangulation. The findings were synthesized to inform the design of performing arts, later presented as creative concepts by students in the course 07201005 Community Arts Innovation. The study revealed that Pathum Thani Province’s cultural identity is shaped by its ethnic diversity, resulting in a multicultural society. Its geography, defined by rivers and canals, serves as a center for activities, with agriculture playing a key role alongside industrial development that impacts the national economy. Pathum Thani balances sustainable development with a blend of traditional and modern lifestyles, preserving its uniqueness while embracing progress. These characteristics provide a rich foundation for creating performing arts that promote tourism. The study identified two key aspects for performing arts development: Creative dance reflecting local careers and wisdom and Creative dance rooted in traditions and beliefs. The creative dance concept highlights the knowledge and cultural heritage of the province’s seven districts, showcasing their unique identities and values through performance. Eight critical elements of dance creation were defined: 1) performance design, 2) performer selection, 3) choreography design, 4) performance prop design, 5) sound and music design, 6) costume design, 7) performance space design, and 8) lighting design. These elements integrate cultural identity with interdisciplinary knowledge, forming a guideline for innovative dance development. The research contributes to understanding the role of performing arts in cultural promotion and tourism while offering a foundation for future advancements in performing arts.

Integrated design and performance study of microwave absorption and load bearing for an embedded honeycomb superstructure

Compared with coated absorbing materials, honeycomb absorbing structural have raised widespread attention due to their better impedance matching, ability to provide multiple reflections and serve as mechanical structures. However, traditional honeycomb structure still has a huge space for improvement under the traction of wide and strong absorption performance, as well as the consideration of thin and light structural design. This article takes the developed multi-walled carbon nanotubes/carbonyl iron/epoxy resin composite material(MWCNT/CI/EP) as the absorbing material, and then embeds it into the traditional honeycomb absorbing structure through a special multi-scale superstructure design to acquire a new type of honeycomb superstructure that combines excellent absorbing performance and mechanical properties. The influencing factors such as structural parameters, incident angles, and polarization modes on the absorption performance of this superstructure was studied through simulation analyses. Research has shown that the designed embedded honeycomb superstructure can achieve full frequency coverage of less than −10 dB within 2-18 GHz, with a minimum of −39 dB, a maximum of −10.4 dB and an average level of −18 dB. The embedded honeycomb superstructure designed in this article has made breakthroughs in terms of absorption and mechanical properties compared to honeycomb structures with the same areal density, providing a certain inspiration for the research of structural and functional composite design.

Design of near-infrared light induced functionalized upconverting nanoparticles as support in enzyme immobilization: Enhanced biocatalyst activity and stability.

In this study, we hypothesized that the emission of upconverted nanoparticles (UCNP) can trigger PEG-L-ASNase (P-Lase) activity through Förster Resonance Energy Transfer under near-infrared (NIR) irradiation. To enhance stability and activity of P-Lase, it was immobilized on functionalized NaYF4:Yb3+, Er3+, Nd3+. Upon immobilization, the obtained NaYF4:Yb3+, Er3+, Nd3+/GPTMS-P-Lase exhibited excellent pH stability, thermal stability, metal ions or organic solvent tolerance, and storage stability. The relative activity of NaYF4:Yb3+, Er3+, Nd3+/GPTMS-P-Lase had about 65 % after 20 cycles and maintained 68 % and 59 % at +4 and 25 °C, respectively, after 4 weeks. Furthermore, in vitro cytotoxicity and hemolysis tests confirmed that the synthesized UCNPs were biocompatible. Most importantly, the activity of P-Lase was enhanced ≥4-fold under suitable NIR irradiation. It is reasonable to believe that this investigation may supply a novel technique to trigger the catalytic efficiency of P-Lase and may have promising application in leukemia treatment.

Optimizing lighting design in educational settings for enhanced cognitive performance: A literature review

Optimizing lighting design in educational settings for enhanced cognitive performance: A literature review

Enhancing virtual indoor environment and energy efficiency with real-time BIM and Unreal Engine integration in building lighting design

Enhancing virtual indoor environment and energy efficiency with real-time BIM and Unreal Engine integration in building lighting design

The Impact of Spatial Light Patterns on Environmental Perception, Mood, and Preference of Older Adults in Assisted Living Facilities

ABSTRACT Previous studies show that electric light levels and temporal patterns significantly impact human perception, mood, and preference, however, there is a gap in existing studies that investigate the qualitative aspect of lighting design such as the spatial electric lighting patterns on older adults’ subjective impression. The main goal of this study is to examine the impact of different spatial electric lighting patterns on the perception, mood, and preference of older adults. The main research question is, “Are there any consistent and shared patterns of subjective impressions among the older adult population under exposure to the spatial electric lighting patterns in an environment?” The study utilized a multi-method research approach integrating systematic pictorial content analysis and a visual preference survey. Building upon a previously established spatial electric lighting pattern framework by authors, this research focused on evaluating the impact of these patterns on the perceptions and preferences of older adults. Sixty healthy older adult participants (aged 60 and above, 39 females, 21 males) from a US Pacific Northwest assisted living facility engaged in a survey research design employing sorting techniques and forced-choice questions. The study evaluated six distinct spatial electric lighting patterns based on criteria including visual preference, stressfulness, clarity, and spaciousness. The findings of this study show that different spatial electric lighting patterns have a substantial impact on older adults’ perceptions and preferences related to the environment. Findings revealed a clear preference for uniform lighting among older adults, as indicated by reduced visual preference when uniform lighting was absent. Additionally, older adults showed a preference for lighting environments that balanced direct and indirect lighting patterns in space. Interestingly, no significant differences in visual preferences were observed between peripheral and central lighting arrangements. Furthermore, the study identified significant associations between electric lighting spatial patterns and participants’ stress levels. It was observed that preference for uniform electric lighting patterns and perceived stress levels associated with these patterns are not mutually exclusive Environments lacking uniform electric lighting patterns were found to induce a more relaxed state. Moreover, the absence of both uniform and indirect lighting significantly enhanced perceived clarity. The study also explored the relationship between lighting uniformity, directionality, and perceived spaciousness. It found a significant correlation between uniform and directional lighting in enhancing the perceptions of the spaciousness of a space. The study concludes with the need to balance spatial electric lighting patterns to achieve a diversity of lighting scenes in older adults’ environments.

Optimizing street lighting design of new cities to enhance the health and wellness of inhabitants

Optimizing street lighting design of new cities to enhance the health and wellness of inhabitants

Collaborative design of landscape and lighting to improve visitors’ satisfaction with nightscapes

Visitors’ satisfaction with the nightscapes of urban green spaces is currently poorly understood, with existing literature mainly focusing on visitors’ satisfaction with daytime landscapes. Moreover, the collaborative design of landscape and lighting—two important factors determining satisfaction—remains unclear. This study conducted surveys on visitors’ satisfaction with nightscapes through a comparative assessment referring to the Federation Internationale de Football Association (FIFA) World Cup Rules. Statistical analysis revealed that: (1) more open spaces, rich colours, and a higher brightness could improve visitors’ satisfaction with nightscapes, while dazzle lighting reduced it; (2) brightness was conducive to visitors’ satisfaction, while enhancing brightness reduced the capacity of a nightscape to uniformly support the four components of satisfaction; and (3) increasing vegetation coverage could enhance this capacity. These findings provide reliable evidence to guide collaborative design that simultaneously considers landscape characteristics and lighting features, which facilitates the improvement of visitors’ satisfaction with nightscapes.

User-Centered Design Framework for Personalized Ankle–Foot Orthoses

Background/Objectives: Integrated design and simulation solutions enable the manufacturing of advanced personalized orthotics that improve patients gait characteristics and balance. The success of such a rehabilitation approach is highly dependent on compliance, i.e., users wearing the orthosis consistently. Specifically, for most young children, functionality is secondary to appearance and peer perception. However, the starting point of the traditional design approach is to address functionality and then try to make the appearance more palatable to the wearer. As a result, compliance is a common issue, resulting in slow and uneven rehabilitation progress. Methods: This work proposes a method that inverts this traditional approach and devises an attractive light design that can be adapted to ensure structural soundness. Results/Conclusions: The broader framework is called the user-centered design process. The main advantage is in the flexibility of the added manufacturing approach, allowing for a personalized design that is attractive to the user, promoting higher compliance.

An innovative approach to lighting design: implementing computer vision algorithms for dynamic light environments

An innovative approach to lighting design: implementing computer vision algorithms for dynamic light environments

Effects of Urban Illumination on Insect Populations: AI-powered Insights into Environmental Challenges and Solutions

Artificial urban lighting seriously disrupts insect populations, creating a cascade effect on ecosystems and biodiversity. This research explores the many ecological challenges presented by urban lighting in terms of how it influences the behavior, physiology, and population dynamics of insects. Urban lighting changes behavioral patterns such as foraging, mating, and navigation, thereby affecting nocturnal activity and vulnerability to predators. This light disrupts insect circadian rhythms physiologically, impairs hormonal regulation, and affects their reproductive success. That jeopardizes their survival and fitness as a population while having adverse population dynamics in abundance and diversity decline that ripple down the food web, ultimately destabilizing ecosystems. Using AI approaches driven by data, the study seeks to understand, predict, and mitigate these effects. Advanced pattern recognition and risk modeling become facilitated with the aid of AI tools in adaptive lighting systems with the potential for reduced harm to the environment. The potential in creating sustainable solutions to urban lighting with regard to ecological integrity alongside human needs, this work thus sets forth a new dimension for such issues as calls for inter-disciplinary cooperation by highlighting the pressing nature of technological innovation into ecological understanding. Through the presentation of a comparative analysis of current mitigation strategies, we are able to identify gaps and suggest future directions for urban ecological management. These include biodiversity-sensitive lighting designs, integration of AI-based monitoring systems, and policy frameworks that prioritize ecosystem health alongside urban development.

Reviewing the parameters that affect sustainability and energy efficient concepts in road and urban lighting design

Reviewing the parameters that affect sustainability and energy efficient concepts in road and urban lighting design

Harnessing Light-Emitting Diode technology for cutting-edge Photovoltaic module characterisation

Significant advancements in Light-Emitting Diode (LED) technologies, including the availability of high-power LEDs at reduced costs, have rendered them a highly desirable and dependable solar simulator. However, there are still challenges in designing LEDs as solar simulators to evaluate the characteristics of specific solar modules across different technologies and sizes, particularly regarding spectral composition and spatial uniformity of irradiation. This work seeks to develop a prototype LED solar simulator capable of generating uniform light with stability of at least 90% (class C) throughout an illumination area of 54 cm × 67cm for laboratory instructional applications. The employed procedures encompass the selection of high-power LED bulbs, thermal management, electrical design, prototype fabrication, and performance assessment. The International Electrotechnical Commission (IEC) 60904-9:20 standard delineates the performance criteria for solar simulators and serves as a framework for constructing LED solar simulators. The study's results demonstrate that the LED solar simulator prototype has been successfully constructed and is categorized as class C, exhibiting a light non-uniformity and stability level of 10%. The capacity to delineate the current and voltage of a 50 cm × 30 cm small solar module under specified irradiance and temperature circumstances may be attained with a mean absolute error percentage of 0.01 and a root mean square error of 0.21. The hexagonal configuration of the LED array offers advantages for light design, including modularity and ease of expansion to achieve a broader illumination area. This arrangement can serve as an invaluable instrument to enhance solar energy research and maximize the performance of photovoltaic devices under regulated conditions.

A Computer Vision-Based Multidimensional Data Modelling Study of the Psychological Responses of Metro Car Colour Lighting Design on Passengers

With the rapid urbanization and expansion of subway rail transit, the subway has become an essential mode of public transportation. This study explores the impact of subway car color design on passengers’ psychological responses. Utilizing computer vision technology and a pruning algorithm, a target detection model for passenger expression recognition was developed, serving as an intuitive measure of psychological reactions. An optimized expression feature extraction network was constructed for facial expression recognition, while a multidimensional data analysis model, based on data mining, provided comprehensive insights. The study reveals that green, red, and yellow lighting evoke positive psychological responses, whereas blue and purple induce calmer or more somber reactions. These findings offer valuable guidance for urban subway carriage color lighting design, enhancing passenger experience.

Analysis of the effect of light intensity on consumer loyalty in shopping using linear regression

This study aims to evaluate the effect of light intensity on shopping satisfaction in retail outlets using linear regression analysis. Light intensity was measured in the range of 900-904 lux, and data were collected through a questionnaire with a Likert scale from 150 respondents. The level of customer shopping satisfaction was recorded at 92%. Linear regression analysis showed that light intensity has a significant positive effect on shopping satisfaction, with a regression coefficient of 0.07. The significance test showed that the relationship between light intensity and shopping satisfaction is not just a coincidence but has a real impact on the customer shopping experience. Increasing the light intensity inside a retail outlet significantly affects customer shopping satisfaction. Proper lighting settings, in the range of 900 to 904 lux, can improve the shopping experience and customer satisfaction. Therefore, optimal lighting design is an important factor in improving customer satisfaction in retail outlets.

Pengoptimalisasian Pencahayaan Buatan pada Kamar Tidur (Studi Kasus: Kamar Kos D’Paris Putri)

Humans need light to see things directly. The light occurs because of the reflection produced by objects so that the eyes can see clearly and comfortably. The lighting system in a room plays a vital role in creating good lighting quality. It takes a mature design to adjust the lighting according to Indonesian national standards in the room. Excessive light can interfere with the eye's activity to adapt to the surrounding environment. However, insufficient lighting can also hinder the activities of the room's occupants because the eye's ability to recognize the climate decreases, and the visual comfort of the room's occupants is disrupted. Visual comfort can be met if the visual comfort factors are realized optimally, one of which is the regularity of the standard light design regulated in the Indonesian National Standard (SNI) and the room's arrangement to suit the lighting distribution. If natural lighting is not possible in a room, artificial lighting must be optimized. In boarding room number 24 D'paris Kos Putri, there is no natural light entering, so artificial light is needed to support the activities of its occupants and make them more optimal. This study aims to identify whether artificial lighting meets the room lighting standards and optimize it to comply with Indonesian National Standards.

Lighting design affects the uniformity and growth of plants in a vertical farming system

Light is essential for plant production and has various effects on plant quality. Vertical farms typically use light-emitting diodes (LEDs) as light sources. However, the cost of LEDs varies with wattage and the initial installation costs are generally high. Therefore, to explore more cost-effective LED designs, we aimed to investigate the impact of red LED chips density on light distribution and plant growth under the same total electricity consumption. To this end, we exposed baby leaf soybean (Glycine max (L.) Merr.; 5 days) and kale (Brassica oleracea var. acephala; 18 days) to LEDs light with different arrangements of red and white chips. Plants were exposed to either 2 W chips with a red: white ratio of 4: 64 (2W4R treatment) or 1 W chips with a red: white ratio of 8: 64 (1W8R treatment) across the entire LED bar. We observed that the distribution of red light in the cultivation room differed depending on the density of the red LED chips. We found that arranging low-power red LED chips at narrow intervals resulted in uniform light distribution across the entire cultivation bed, positively affecting crop growth. Baby leaf soybean and kale exhibited uniform growth under 1W8R and growth was particularly enhanced in kale. This may be because of the dense leaf structure of kale, which promotes photosynthesis under a uniform light environment. The results of this study demonstrate that a favorable light environment can be created by altering the position and distribution of red LED chips, thereby inducing uniform growth in plants.

Light design in children's play environment

The article offers a review of domestic and foreign experiences in lighting design of children's playgrounds. The need to study this topic is due to the lack of clear differentiation of lighting equipment for children's play environments. The analysis includes the possibilities and prospects for the participation of light in children's play activities. Lighting design is considered in terms of its features, location and lighting scenarios. Based on a broad analysis of design experiences, a typology of lighting scenarios in a children's play environment is proposed, and examples of their implementation and characteristic features are presented. The typology will allow design proposals to be differentiated and the advantages of individual types to be used for high-quality lighting design for children's play environments.

Editorial: Towards effective integrative lighting design: Understanding human light exposure and its impact on health and well-being

Editorial: Towards effective integrative lighting design: Understanding human light exposure and its impact on health and well-being

Pupil obscuration mediates the impact of an overhead glare source

Interindividual variability in discomfort from glare has been documented in previous studies, but the causes are not well understood. An observer-related factor that contributes to the variation in perceived glare across individuals is the portion of the face exposed to direct illumination, which is influenced by facial geometry. We hypothesized that individuals with a shaded pupil (due to deeply recessed pupils within the eye socket) would tolerate higher luminance for an overhead glare source compared to individuals with an unshaded pupil. To test this hypothesis, an experiment was conducted where the facial models of 29 participants were collected using a 3D scanner. Participants were seated at a spherical apparatus and asked to set the luminance of a light source positioned 60° above the line of sight using matching and adjustment procedures. For a source positioned 60° above the line of sight, participants with an unshaded pupil set the borderline between comfort and discomfort luminance to a significantly lower value compared to those with a shaded pupil. This can inform more inclusive lighting design guidelines by considering individuals who are likely more sensitive to overhead sources due to their facial geometry.