Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"artificial lighting"”.
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Detecting Impervious Cover with Artificial Lighting in Astronaut Photography from the International Space Station
… Station (ISS) to detect impervious cover. The artificial lighting emitted from a city’s nightscape is used as a proxy for imperviousness. This paper expands on their research by focusing on the nightscape in San Antonio, TX from December 2015, and by observing the effect the camera look angle …
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Greenhouse climate model : an aid to estimate the influence of supplemental lighting on greenhouse climate
… darkness is almost absent during June and July. Artificial lighting and movable blackout screen are therefore needed to have a year round production. Replacement lighting requires a high density of lighting devices which implicates a big heat gain due their losses. Understanding the influence of …
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Influence of light conditions on the dynamics of Tetranychus urticae and its control by the predatory mite Neoseiulus californicus
… spider mite densities, suggesting that constant artificial lighting may disrupt predator efficiency and delay pest suppression. Predator densities also varied across light regimes, with continuous LED exposure leading to lower peak N. californicus densities than with 12h LED and natural light. …
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Vliv světelného znečištění na noční motýly (Lepidoptera)
… pollution, caused by the increasing presence of artificial lighting in nighttime environments, is emerging as a significant ecological stressor. This bachelor thesis focuses on the effects of artificial light at night (ALAN) on moths (Lepidoptera), a taxonomically and ecologically important group …
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Illuminating the path of darkness: social and sacred power of artificial light in Pharaonic Period Egypt
… primary source of illumination. In comparison, artificial light receives very little attention, primarily due to a lack of archaeological evidence for lighting equipment prior to the 7th century BC. However, 19th and 20th century lychnological studies have exaggerated this point by placing an …
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Through a window, brightly : modulating daylight and solar radiation in commercial and institutional buildings through the use of architectural elements
Natural lighting serves several important functions in buildings. The visual power of a shaft of sunlight penetrating a dark space or the visual beauty of a stained window has long been recognized by architects and designers. The primary focus of this study is a more pragmatic one. Besides strong …
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Led lighting for indoor cultivation of leafy vegetables and herbs
… is the case of the so called vertical farms with artificial lighting (VFALs), where artificial light substitutes solar radiation and allows plants' growth. In VFALs, environmental factors (e.g., temperature, humidity, light and CO2) can be adjusted to the plant needs. By using multi-layer systems, …
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DETERMINATION OF STANDARD AND FIELD METABOLIC RATES IN TWO GREAT LAKES INVADING FISH SPECIES: ROUND GOBY (NEOGOBIUS MELANOSTOMUS) AND TUBENOSE GOBY (PROTERORHINUS SEMILUNARIS)
… cover, precipitation, ambient temperature, and artificial light exposure in a community of north temperate birds. I found that birds begin their dawn choruses significantly earlier with increasing moon brightness and ambient temperature, and significantly later with presence of cloud cover and …
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Best practices for the sustainable scaleup of lighting technologies in bottom of the pyramid communities
… set of best practices for sustainably scaling up lighting technologies in developing countries with a focus on Bottom-of-the-Pyramid (BOP) communities, whose annual incomes are US $3000 or less (in local purchasing power parity). The best practices are derived from a comparative analysis of two …
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Outdoor lighting: sustainable practices for effectively restoring the night
Artificial lighting at night has lasting negative impacts on humans, animals, and the environment. This report aims to review and analyze existing and emerging sustainable practices in outdoor lighting that can aid in effectively restoring the night. The analysis of this report is focused on …
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Characterizing Water as Gap Fill for Double Glazing Units
… buildings to minimize electrical consumption of artificial lighting systems. Glazing systems designed to allow optimal visible light transmission also allow significant unwanted direct solar heat gain caused by infrared light. Conversely, glazing systems that are designed to reflect unwanted …
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Space, light, and time : prospective analysis of Circadian illumination for health-based daylighting with applications to healthcare architecture
… understanding about the health effects of daylighting in architecture. Little in the way of rigorous analysis exists in the emerging field of "evidence-based" design; however billions of dollars are committed to healthcare construction in the United States annually. The next generation of …
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BASIC AND APPLIED RESEARCH APPROACHES FOR OPTIMIZING THE USE OF ARTIFICIAL LIGHT IN VEGETABLE CROPS
… lights are a desirable alternative to outdated lighting systems due to their numerous benefits, including programmability and efficiency in energy consumption. But before switching from traditional broad-waveband lighting systems to narrow-wavelength LED lighting, there is a need to ensure that …
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An attempt to advance seasonal reproductive activity in stoats (Mustela erminea) by use of an artifical photoperiod: A dissertation submitted in partial fulfilment of the requirements of the Degree of Bachelor of Science with Honours at Lincoln University
… 14 May half of the animals were subjected to artificial lighting, which reached 16 h/day on 30 June and continued at this daily duration until November. Controls experienced natural changes in daylight. Faecal samples were collected for hormone analysis. Vaginal cytology and physical changes …
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Energy Conservation By Intermittently Recirculating and Aerating an Aquaponics System with an Airlift
… tank, and a soil-free growth media bed under artificial lighting. The total water volume in each system was 230 liters.</p> <p>Test conditions of intermittent vs. continuous aeration and recirculation were studied and growth rates of plants and fish were measured. Four week-long tests of …
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An Exploration into ‘noctcaelador’ in Young People of Generation Z
… light pollution, voicing fears that excessive artificial lighting could lead to a diminished appreciation of the sky. Nonetheless, there was a sense of optimism that advances in astronomical research and space technology will empower future generations to reconnect with the night sky.
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Mitigating the Effects of Seasonal Affective Disorder Through Architecture
… exterior form incorporates both natural and artificial lighting, showcases tree and plant life that people this far north are unable to cultivate, and provides innovative social spaces and an atmosphere that will draw people inside. Both tourists and locals alike will be able to experience …
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High-Intensity Discharge Industrial Lighting Design Strategies for the Minimization of Energy Usage and Life-Cycle Cost
Worldwide, the electrical energy consumed by artificial lighting is second only to the amount consumed by electric machinery. Of the energy usage attributed to lighting in North America, approximately fifteen percent is consumed by those lighting products that are classified as High-Intensity …
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Circadian rhythms and effects of different diets on the development and reproduction of Nabis Kinbergii (Hemipteria : Nabidae).
… they were held in a controlled environment with artificial light. Under both natural and artificial lighting conditions, they would spend more time moving on plants at night. They spent less time moving than other activities. Furthermore, they were more active during the second day of the …
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Wavelets In Real-time Rendering
… simulation, electronic commerce, visualization, lighting design, digital libraries, geographical information systems, economic and medical image processing are typical candidate applications. Recent advances in graphics hardware have enabled real-time rasterization of complex scenes under …
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