How can lighting improve safety and the perception of safety in the built environment?4 answersLighting plays a crucial role in enhancing safety and the perception of safety in the built environment. Lower and balanced brightness levels can sharpen senses, create a relaxed atmosphere, enrich perceptions of spatial and social surroundings, and increase perceived safety. Quality of urban greenery and street lighting impacts route choices, with unkempt greenery in darkness contributing to avoidance and entrapment, while the presence of others enhances safety perception. Collaborative investigations of lighting design emphasize the need for a human-centered approach that considers the atmospheric and experiential aspects of lighting to enhance public safety and well-being. By combining technical elements of lighting with qualitative and quantitative methodologies, designers can create more equitable night-time design outcomes that promote gender equity and access to public spaces at night.
Can LED lighting in shelves be optimized for specific plant species to improve yield and overall health?5 answersLED lighting in shelves can be optimized for specific plant species to improve yield and overall health. Studies have shown that LED illumination can maximize plant yield and quality in protected agricultural systems. LED lighting sources have adjustable spectra, allowing for the optimization of light composition to enhance plant growth and nutrient content. By manipulating the light spectrum provided by LED sources, it is possible to observe rapid phenotypic responses in different plant species. Additionally, the use of red and blue LED illumination has been found to be more reliable and efficient than full spectrum illumination, increasing biomass and nutritional value by enhancing photosynthetic activity and antioxidant properties. Therefore, by carefully selecting and adjusting the LED lighting spectrum, it is possible to optimize the growth and health of specific plant species in shelves.
How to make illumination better?5 answersTo improve illumination, various methods and devices have been developed. One approach is to use an image processing method that enhances the visibility of low illumination images by using window selection and stretching techniques. Another method involves the use of a nonimaging light guide that collimates and diffuses light emitted by a light source, providing improved light output without the need for complicated optical arrangements. Additionally, a mirror matrix assembly can be used to reflect light from one or more light sources and illuminate objects or surfaces, making it suitable for various applications such as sports fields and road tunnels. Another approach is to design an illuminating device with a heat radiation cover and module, which effectively dissipates heat and improves the concentration of light. Furthermore, winding a Cold Cathode Fluorescent Lamp into a spiral can substantially increase the light flux available, providing illumination equivalent to incandescent lamps.
What is impact of lighting on university educational classroom?5 answersLighting in university educational classrooms has a significant impact on students' cognitive performance. Different levels of illuminance and Correlated Colour Temperature (CCT) can affect attention and memory tasks differently. Higher light levels improve attention, while lower light levels improve memory. Higher CCTs lead to better performance in both attention and memory tasks. The impact of indoor lighting on visual perception and cognitive performance was investigated in a field study. The study found that indoor lighting significantly influenced skin preference and atmosphere perception, but had no measured effects on alertness and attention. Visual fatigue was also found to have an insignificant impact. Paper colour, rather than indoor lighting, had a significant impact on the visual comfort of text reading. The study also highlighted the importance of considering the degree of proficiency in cognitive performance tests. Proper lighting design in classrooms is crucial for energy efficiency and student well-being.
What is the role of lighting in dance?5 answersLighting plays a crucial role in dance performances by enhancing the visual experience for the audience and highlighting the movements and body of the dancers. It contributes to the overall atmosphere and creates a visual bonanza for the spectators. Lighting design in contemporary dance is considered an art form that illuminates the performer's body and creates a magical illusion. It is an integral part of a colorful performance, blending with costume, makeup, set, and interactive media. Lighting design can also be used to foreground shadow in dance performances, providing an innovative expression and adding depth to the visuality of the performance. Overall, lighting design in dance is a creative process that adds texture, shapes, and angles to the performance, creating a visually captivating experience for the audience.
How do i optimize traffic lights?5 answersTo optimize traffic lights, various methods have been proposed. One approach is to use deep reinforcement learning (DRL) to dynamically adjust the phase length of traffic lights based on the traffic flow state at the intersection. Another method involves monitoring traffic conditions using sensors and dynamically controlling the green light time for each lane based on the traffic flow in that lane. Additionally, a Markov Decision Process (MDP) can be used to minimize vehicle delay at isolated intersections by optimizing the duration of green intervals and the grouping and ordering of traffic flows. Optimization can also be done to decrease environmental noise by controlling traffic lights. Simulation and optimization of traffic light controllers using adaptive algorithms based on reinforcement learning have shown promising results in accommodating increasing traffic demand.