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 21 for “"margin of safety"”.
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Income Inequality, Household Borrowing, and the Business Cycle
… This dissertation investigates the foundations of the 2008 recession and offers an explanation for the slow growth recovery. Three distinct papers examine a different aspect of household borrowing and the way it can influence macro-dynamics. The first paper situates the 2008 financial crisis …
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Application of the finite element method in high-side gondola rail car design
Finite element models of four design configurations of a proposed composite aluminum-steel high-side coal gondola rail car were developed. The designs were analyzed for compliance with the loadings set forth by the Association of American Railroads. Each of the first three designs were analyzed to …
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Parametric studies of the criticality of radioactive spent fuel canisters in a tuff repository
With the availability of temporary nuclear waste storage in short supply, the federal government has invested in the research of permanent nuclear waste storage. One area of study is the criticality achieved by emplaced radioactive waste. In this study, a series of parametric analyses were …
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Adequacy of minimum passing sight distances for completing or aborting the passing maneuver
… maneuvers on two-lane rural roads is still one of the most complex situations drivers are faced with in everyday driving. In passing, drivers must judge the speed, acceleration and deceleration capabilities of their own vehicle, that of the impeding vehicle and the speed and rate of closure of …
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Targeted 177 Lu antisense radiotherapy of B-cell non-Hodgkin's lymphoma
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] The B-cell lymphoma/leukemia-2 (bcl-2) proto-oncogene in non-Hodgkin's lymphoma (NHL) is a dominant inhibitor of apoptosis. The research goal was to develop a [superscript 177]Lu-labeled bcl-2 antisense peptide nucleic …
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Modulation of Ly49A+ Natural Killer Cell Licensing by Major Histocompatibility Complex Class I Alleles
… receptors for MHC class I that block the ability of activation receptors to stimulate NK cells. Since many NK cells lack receptors that recognize self-MHC, the inhibitory receptors also mediate a second function, termed NK cell licensing, to protect against autoreactivity. To become licensed, i.e. …
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Dynamic instabilities imparted by CubeSat propulsion
As the role of CubeSats evolves to include more challenging and complex missions in addition to technology demonstrations, the demand for agility have increased. As the technology improves and gains flight heritage, CubeSats are being deployed to accomplish more difficult missions including, but …
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Decision making under epistemic uncertainty : an application to seismic design
The problem of accounting for epistemic uncertainty in risk management decisions is conceptually straightforward, but is riddled with practical difficulties. Simple approximations are often used whereby future variations in epistemic uncertainty are ignored or worst-case scenarios are postulated. …
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Optomechanical design, analysis, and testing of the nanosatellite optical downlink experiment
… into orbit in 2017 alone. As the density of increasingly capable small satellites in orbit increases, many CubeSat operators are finding that current radio frequency (RF) communications are not capable of transmitting the amount of data desired. Free Space Optical (FSO) communication …
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Propeller whirl flutter analysis of the nasa all-electric X-57 through multibody dynamics simulations
… This research presents a whirl flutter analysis of the NASA all-electric X-57 and how it influences the design of the vehicle. Multibody dynamics analysis (MBD) is used for this study, Dymore, with correlating data from CAMRAD II given by NASA. Along with numerous studies of the X-57 using these …
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Numerical Study and Load and Resistance Factor Design (LRFD) Calibration for Reinforced Soil Retaining Walls
Load and resistance factor design (LRFD) (often called limit states design (LSD)) has been mandated in the AASHTO Bridge Design Specifications and will be adopted in future editions of Canadian Highway Bridge Design Code for all transportation-related structures including reinforced soil retaining …
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An Uncertainty-Based Approach to the Total Maximum Daily Load Development
… approach is developed to the estimation of the total uncertainty-based Margin of Safety (MOS) for Total Maximum Daily Load calculations using the watershed modeling tool HSPF. In order to determine the prior, likelihood, and posterior distributions of uncertainties involved in Bayesian …
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Optomechanical Design of a Space Telescope Primary Mirror
The primary mirror is the most critical component of a space-borne telescope. The size of the primary mirror is the main driver for the resolution of the telescope. A high resolution telescope requires a larger primary mirror with the high-precision requirement of deformation due to space thermal …
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The Groundnut Market in Senegal: Examination of Price and Policy Changes
The Government of Senegal is attempting to liberalize the groundnut market. In the past, this market was highly regulated with government-set producer prices, groundnut oil processing mills owned by parastatals, and requirements that all groundnuts be sold to these quasi-governmental organizations. …
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Estrogenic and androgenic endocrine disrupting activity and risk assessment of phytoestrogens in Kenyan soya-based weaning flours
The presence of phytoestrogens (PEs) in soya based baby foods has attracted a lot of attention due to their ability to act as endocrine disruptive compounds (EDCs). Infants and young children have critical windows of sensitivity to EDCs during their development. Positive health effect of PEs are …
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Methodology for updating numerical predictions of excavation performance
… in site investigations and measurements of soil properties, simplified constitutive models are routinely used in geotechnical analyses for the design of excavation support systems. However, monitoring data provides additional information on the performance of these support systems during …
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Determination of the Critical Moisture Level for Mould Growth on Building Materials
… and temperature also vary in different parts of buildings. One way of preventing the growth of mould in buildings is therefore to choose building materials that can withstand the expected conditions. It is thus crucial that data are available to allow the correct choices of materials to be …
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Frequency-Dependent Conduction Block In Demyelinating Focal Neuropathies
It is the objective of this thesis to demonstrate conduction block across regions of focal demyelination by utilizing a conventional electrophysiological technique used frequently in the diagnosis of peripheral nerve disease. Specifically, patients with moderate to severe carpal tunnel syndrome …
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Production, Characterisation and Application of Bioflocculants from Pure Bacterial Strains and their Consortia Isolated from Sodwana Bay in Kwa-Zulu Natal, South Africa
… to form large and settleable flocs. Bioflocculants have been the center of attention in bioremediation because of their effectiveness, biodegradability, harmlessness and environmentally inert nature. This study aimed at producing, characterising and applying bioflocculants from pure …
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HYSTAR: Hydrology and Sediment Transport Simulation using Time-Area Method
A distributed approach can improve functionality of H/WQ (Hydrology and Water Quality) modeling by facilitating a way to explicitly incorporate spatial characteristics of a watershed into the model. The time-area approach, with its intuitive and inherently distributed concept, provides a simple …
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