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 2570 for “"Small-Scale"”.
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Small-scale biogas upgrading : feasibility study of small-scale biogas upgrading in Iceland and possible methods
… petrol and diesel, are examined if feasible for small-scale upgrading. Water Scrubber adsorption and Membrane biogas separation where found feasible. The water scrubber system was found the only available option for upgrading gas from the WWTP anaerobic digester in Vífilfell, being the only one …
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Small-scale structures in planetary nebulae
… (PNe) were studied in order to investigate small scale molecular structures in planetary nebulae, the survival of which affects the structure and composition of the interstellar medium (ISM) from which the next generation of stars is born. Molecular hydrogen (H[subscript 2]) was used a …
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Understanding the livelihoods of small-scale fisheries in Lamberts Bay : implications for the new small-scale fisheries policy
Small-scale fishers (SSFs) are among the most vulnerable socio-economic groups because of their high dependence on marine resource harvesting. While small-scale fisheries employ the overwhelming majority of the world's fishers and contribute substantially to the global catch, they are, on the …
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Big hopes for small-scale fishers: a critical review of South Africa's small-scale fishing policy and regulations
… gives express recognition to the subsistence or small-scale fisheries sector, a regime addressing the needs of this sector has finally been promulgated. That regime consists of the Policy for the Small Scale Fisheries Sector (20 June 2012) in South Africa and the Regulations relating to Small …
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Small Scale Aeolian Processes and Landform Response
… grains produce various landforms from centimeter-scale sand ripples to meter- or kilometer-scale dunes and dune fields on terrestrial and extraterrestrial surfaces. In this dissertation, I investigated three subjects concerning small-scale aeolian processes and landforms: 1) the mechanisms of the …
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Comparative Hydrodynamic Testing of Small Scale Models
… adequate for comparing dissimilar hull types. Scale model hydrodynamic testing is the traditional evaluation method, and is applicable to most hull forms. Scale model tests are usually performed on the largest model possible in order to achieve the most accurate performance predictions. …
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Small-scale farming - contraints defining the sector
… an entrepreneurial growth model within the small-scale farming sector. Entrepreneurship within this sector needs to be sustained through efficient and effective means that will ensure these ‘ecopreneurs’ implement their visions for a sustainable future. Regarding the small-scale farming …
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Optimisation of small scale anaerobic digestion technology
… gradual increase in the establishment of on-site smallscale anaerobic digesters in developed regions, particularly in Europe. However, these advances have not completely eradicated some of the challenges with operating AD system. The project is aimed at investigating the potential of optimizing …
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Small-scale mining : the situation in Namibia
Small-scale mining provides income generation possibilities to a number of people and can thus help to alleviate poverty in Namibia, a country richly blessed with appropriate geological resources. A legal framework coordinating mining activities is in place, but there are obvious shortcomings …
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Small-scale distributed machine learning in R
… of machine learning problems in an accessible, small-scale environment. This small-scale ‘proof of concept' performs well enough to be viable for students, while also creating a bridge, and introducing the knowledge required, to deploy large-scale distribution of machine learning problems.
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Solar thermoelectrics for small scale power generation
… living without basic electricity, the need for a small scale power generation is there. Through this work, we show that the solar thermoelectric generators (STEGs) using cheap parabolic concentrators with high ZT modules can be a viable and a costeffective alternative to solar photovoltaics for …
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Small-scale Advanced Thermo-Adsorptive Battery prototype
… to that effort, with the development of a small-scale version of the ATB. Two novel prototype designs are discussed. The first, though never fully operational, was an attempt to demonstrate the potential of ATB technology to be scaled to meet countless heating and cooling applications. The …
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Small scale vacuum chamber for general use
For this thesis a small scale vacuum chamber assembly was designed and fabricated. This chamber's purpose is to provide high quality vacuum conditions for a variety of samples. Often these samples are in need of precise temperature control. An ultra-high vacuum remains the best environment to …
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Development regulations and the small scale environment.
Massachusetts Institute of Technology. Dept. of Urban Studies and Planning. Thesis. 1973. M.C.P.
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Shape Memory Alloys for small scale actuation
… of the current state of the art for small scale actuation with SMA wires, and to evaluate the Cu-based alternative SMA, which has a reduced cost and improved thermal properties. This thesis evaluates Cu-based SMAs as substitutes for NiTi in terms of activation strain of wire during a …
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Materials for small-scale space propulsion systems
… of space missions. The increasing utilization of small, cheap, easy-to-launch satellites known as CubeSats has spurred demand for a propulsion system which exists at the nexus of high power efficiency, low mass, surface area, and volume, and high specific impulse. iEPS has demonstrated a unique …
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Small-scale Wind Energy Portable Turbine (SWEPT)
Large Scale Wind Turbines (LSWTs) have been extensively examined for decades but very few studies have been conducted on the small scale wind turbines (SSWTs) especially for the applications near ground level where wind speed is of order of few meters per second. This study provides the first …
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