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 109 for “"Environmental Control"”.
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STUDY OF LOCAL ENVIRONMENTAL CONTROL OF ROOT SYSTEM ARCHITECTURE
Plants are exposed in a heterogeneous environment in nature, especially the root system. In a relatively small volume, soils vary greatly in texture, nutrient contents, pH, and moisture content, all of which has a great impact on shaping root architecture. Work presented in this thesis reveals that …
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The Effect of Environmental Control Costs on u.s. Trade
In recent years, there has been speculation regarding the impact of pollution abatement expenditures on the competitiveness of the United States in international trade. There have been several attempts to measure the magnitude of the effect; however, the initial attempts to analyze the problem were …
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Fuel-conserving environmental control strategies for small Islanded microgrids
In this thesis I designed and deployed a control system that subjects Environmental Control Units (ECUs) at U.S. Army Forward Operating Bases (FOBs) to centralized control, and demonstrated how intelligent operation of the ECU load can result in considerable fuel savings. I also developed a …
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Dynamic Environmental Control of a Vertical Farm for Lettuce Production
Dynamic environmental control systems in vertical farms have been posed as avenues towards improving agricultural productivity and crop quality while addressing sustainability concerns around energy consumed by lighting systems as well as overall resource use. Previous efforts in dynamic controls …
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Efficient management of environmental control within electrical substations for decarbonisation purposes
… the risk of damage to distribution equipment environmental, control is required to maintain specific levels of temperature and relative humidity. This research explores how these assets can be decarbonised whilst maintaining the required internal environmental conditions. Using a longitudinal …
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The Environmental Control of Reproduction in the Female Dace, Leuciscus leuciscus
An investigation was made into the nature and control of the annual reproductive cycle of the dace, Leuciscus leuciscus. It includes 1) a study of the natural reproductive cycle, 2) the use of Carp Pituitary Extract (CPE) to induce final maturation and ovulation in captive fish, 3) the effect of …
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Effects of choice and environmental control on the perception of control
… was to investigate the effects of choice and environmental control on perceived control. A paired associate choice task was presented to all subjects and they were allowed to choose the response terms to be learned. When each of the response words was chosen aloud, the screen on which the …
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Applications of modern optimal control theory to environmental control of confined spaces
Digitized by Kansas Correctional Industries
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Applications of modern optimal control theory to environmental control of confined spaces
Digitized by Kansas Correctional Industries
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The SmartLab: experimental and environmental control and monitoring of the chemistry laboratory
… thesis focuses on acquisition of data such as environmental and experimental conditions and the control of experimental apparatus. A suite of software applications will be described which captures data from a standard data acquisition card, processes this and archives it in an appropriate …
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An approach to environmental control and mechanical systems in an architectural curriculum.
Massachusetts Institute of Technology. Dept. of Architecture. Thesis. 1969. B.Arch.
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Quantitative probabilistic modeling of environmental control and life support System resilience for long-duration human spaceflight
… time in the history of human spaceflight, the Environmental Control and Life Support Systems (ECLSS) that sustain the crew in their habitat will have to function without rapid resupply or abort-to-Earth capability in the event of an emergency. In this environment, reliability and resilience …
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Design and use of an environmental control platform for studying vascular cell function in three-dimensional scaffolds
… biochemical and biomechanical stimuli. Thus, a controllable three dimensional environment is desired to study these interactions. The cells do not move instantaneously or in direct paths, hence, it is beneficial to be able to study the cells at multiple time points and over long periods of time. …
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Semi-Open Space and Micro-Environmental Control for Improving Thermal Comfort, Indoor Air Quality, and Building Energy Efficiency
… This research investigates the use of a micro-environmental control system (µX) and semi-open space (SOS) to efficiently provide the desired thermal comfort and air quality conditions for individual occupants while the ambient air temperature set-points were relaxed for reducing the overall …
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