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 187 for “"Phasing"”.
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Optimal Electrodynamic Tether Phasing and Orbit-Raising Maneuvers
… electrodynamic tether (EDT) performing phasing and orbit-raising maneuvers. An EDT is a conductive tether on the order of 20 km in length and uses a Lorentz force to provide propellantless thrust. We develop the optimal equations of motion using Pontryagin's Minimum Principle. We find …
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Initial crystallographic and phasing studies of FlhD/FlhC complex.
Initial crystallographic and phasing studies of FlhD/FlhC complex.
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Phasing of Ground-based Optical Arrays for Space Applications
Delivery of optical power to targets in space has many applications, including optical communication, active sensing, laser propulsion, and the removal of space debris. However, large monolithic optics required to obtain high directivity are costly and difficult to slew at the rates required to …
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Signal Phasing Strategies for Intersections with an Exclusive Bicycle Path
… operational inefficiencies if unsatisfactory phasing strategies are used. The source of the issue stems from difficulty in developing a phasing strategy where simultaneous vehicular movement is to not come into conflict with any concurrent bicycle movement, particularly the vehicular …
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A study of rail transit system phasing and expansion decisions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.
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Real options in action : vertical phasing in commercial real estate development
… from possible downsides. Flexibility, and phasing specifically, enables a developer to manage risk more effectively by allowing a building to grow as market conditions warrant. This thesis investigates the determinants and implementation of vertical phasing, and suggests areas of …
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Effects of upstream wake phasing on the performance of transonic compressors
The effect of the upstream wake phase on the work input (i.e., rise in stagnation enthalpy across the blade row) of a transonic rotor is examined computationally and analytically. It is found that the compressor work depends on the path followed by the wake vortices as they travel through the rotor …
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The dating and phasing of the timber circle complex at Ballynahatty, Co. Down
This thesis sets out to present and analyse the remains excavated from the timber circle complex at Ballynahatty, and to define and clarify the phases uncovered. The site forms part of the henge tradition, an assemblage of sites and artefacts well defined in Britain and yet so poorly understood in …
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The institutional axis of hegemony: Phasing out coal at the Port of Newcastle
‘Supply-side fossil fuel policy’ (SSP), such as banning new coal mines, is required to reduce emissions in line with the Paris Agreement. However, SSP remains elusive amid Australia’s continuing fossil fuel expansion. This thesis studies how the Australian state maintains ‘fossil fuel hegemony’, …
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The institutional axis of hegemony: Phasing out coal at the Port of Newcastle
‘Supply-side fossil fuel policy’ (SSP), such as banning new coal mines, is required to reduce emissions in line with the Paris Agreement. However, SSP remains elusive amid Australia’s continuing fossil fuel expansion. This thesis studies how the Australian state maintains ‘fossil fuel hegemony’, …
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Phasing-Out Gas Flaring In Nigeria: A Critical Assessment of the Regulatory Regime
The rapid development of the global oil and gas industry has led to an increase in atmospheric emissions which is detrimental to the wider atmosphere. The flaring of gas during oil exploration and production (E & P) activities alarmingly contributes to the emission of green-house gases which …
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Optimal phasing : a deterministic and probabilistic analysis of different real estate development profiles
… reaching the desired financial outcomes. Hence, phasing plays an important role as it brings the flexibility to break the whole project into various parts or phases, which could function as standalone entities with or without other parts or phases. And so, it is important to consider how to …
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New techniques in project portfolio management don't stifle innovation with excessive phasing and gates
Managing multiple ideas, candidate initiatives and in-flight projects across diverse business units is a large challenge for major organizations. Overseeing global demand for projects as well as resource needs, risks, issues, compliance and value measurement requires an enterprise-class solution. …
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Primer-Optimized Results and Trends for Circular Phasing and Other Circle-to-Circle Impulsive Coplanar Rendezvous
Two non-phasing circle-to-circle impulsive rendezvous problems are also examined to show the applicability of the tools developed here to a broader class of problems and to show how optimizing these rendezvous problems differs from the circular phasing case.
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The phasing out of commercial subjects in rural Limpopo Secondary Schools in Vhembe West District, South africa
… study was to investigate the reasons behind the phasing out of commercial subjects. This study adopted a qualitative approach where purposive sampling of educators teaching commercial subjects, school managers and learners were interviewed, and observation techniques were used to collect data. A …
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Low Resolution ab initio Phasing Method by Modification of Density and Phase in Real and Reciprocal Space
Phasing problem in X-ray structure determination can be challenging. Several methods, such as Isomorphous Replacement and Molecule Replacement, are frequently used. But their success relies on the availability of either an isomorphous heavy-atom derivative or a high identity homologous model. In …
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Effect of ambient conditions and fuel properties on homogeneous charge compression ignition engine operation
… on HCCI engine operation, and evaluates cam phasing as a mechanism to compensate for these changes. Experiments were carried out on a modified 2.3 L 14 production engine, and HCCI operation was achieved by the use of residual trapping by negative valve overlap. The first phase of the project …
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