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 61 for “"Small change"”.
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Working for Small Change: Investigating the Livelihoods of Ride-hailing Drivers in Cape Town, South Africa
Since its introduction in 2009, ride-hailing has been at the centre of many critical discussions concerning the disruption of the (public) transportation sector, labour issues and tax matters. Missing voices in this discourse have notably been the employees of ride-hailing companies, specifically …
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A Small Change Approach on Adiposity, Lean Mass, and Bone Mineral Density in Adults with Overweight and Obesity: A Randomized Controlled Trial
… as most adults are unable to sustain the major changes in behaviour required to maintain weight loss long term. Many institutions now recognize that weight gain prevention by making small adjustments to energy intake (~100 kcal/day) and expenditure (~100kcal/day) represents a feasible strategy …
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Parallel multigrid for large-scale least squares sensitivity
… sensitivity problem for periodic systems. A small change to the traditional adjoint sensitivity equations results in a method which can accurately compute both instantaneous and long-time averaged sensitivities. The second approach deals with the recently developed Least Squares Sensitivity …
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Investigating the Relationships Between Age and Depth of Stockpiled Topsoil with Its Nutrient Content: An Analysis of Responsible Factors and Potential Consequences
… to determine if there were significant chemistry changes between age and depth of stockpiled soils. The results indicated a small change in organic matter and carbon but a large change in pH, electrical conductivity, calcium, nitrates and sulphates and some fixation of phosphates and potassium in …
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Investigating the impact of interacting with real world objects in virtual environments.
… the virtual environment has on human motion. A small change in motion in the virtual environment was seen, with average increases in knee flexion of 5.2° and 6.3° in the virtual room and forest environments, respectively and a decrease in percent of foot on step (PFOS) of 4.2% and 6.2%. There …
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Tectonic evolution and midplate volcanism in the South Pacific
Changes in morphology of the Marquesas Fracture Zone are correlated with small changes in Pacific-Farallon relative motion. The simple flexural signal of a locked fracture zone may be obscured by tectonic effects, and there is no evidence for the release of shear stress on the fracture zone by …
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Local Charging Behavior on GaN Surfaces
… In the case of forward-bias charging, a small change in surface contact potential (0.1 – 0.3 eV) is observed that is primarily due to a small voltage drop across the surface oxide. Reverse-bias charging produces a substantially larger change in surface potential (~1 – 3 eV) that must be …
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A Composite-Upper Bounding Method of Finding a Feasible Solution to a Linear Programming Problem
… solution to a problem has been obtained and a small change in the original data is required. | An upper bounding algorithm is useful when a problem has constraints of the form x < b and is especially useful in computer applications. Most computer routines have restrictions on the number of …
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Evaluating Equivalence Testing Methods for Measurement Invariance
… results in a chi square difference test or a small change in goodness of fit indices (GOFs) such as CFI or RMSEA are used to conclude invariance. Yuan and Chan (2016) proposed replacing these approaches with an equivalence test analogue of the chi square difference test (EQ). While they …
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Physical one-way functions
… that they exhibit the avalanche effect, i.e., a small change in the physical system causes a large change in the hash value. An inexpensive prototype authentication system based on physical one-way hash functions is designed, implemented, and analyzed.
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Direct Measurement of Boiling Water Heat Flux for Predicting and Controlling Near Critical Heat Flux
… temperature and drastically increase for a very small change in temperature. This inflection response can be used as an indication for approaching CHF and can also be used to approximate its value without prior knowledge of when it occurs.
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Multidelity approaches for design under uncertainty
… smooth in the design space in the sense that a small change in the design variables produces a small change in the model outputs, it has an autocorrelation structure that can be exploited by the control variate method. The information reuse estimator is developed to reduce the computational cost …
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Measurement of binary phase equilibria and ternary/quaternary gas antisolvent (GAS) system measurement and analysis
… An advantage of GXLs is that a relatively small change in pressure or temperature can greatly affect the solvation properties. The tunability of GXLs increases as the amount of the gas (usually CO2) increases in the liquid phase. With the benign chemical nature and environmental impact of …
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Extending the Graphical Representation of four KEGG Pathways for a Better Understanding of Prostate Cancer Using Machine Learning of Graphical models
… is to learn from a large number of candidates, small samples,(p>>n), and for such problem the goal is to apply model selection methods that hopefully achieve an accurate prediction , interpretable models, and stable models. The prediction and the most powerful predictors can be improved by using …
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Designing and Building a Novel Magnetic Heating System to Investigate the Dependence of the Magnetic System and the Optical Emission from Nanoparticles
… Nanoparticles (NPs) to produce local temperature changes. The aim is to design a device capable of studying medically targeted magnetic-fluorescent core-shell NPs (with potential applications in cancer therapy via hyperthermia). Very little is known about how the magnetic-fluorescent NPs respond …
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Implementation of the new FDA quality by design guidance in pharmaceutical production
… environment, it is difficult to implement changes to a pharmaceutical process. Even small change request approvals can require months of effort for pharmaceutical companies and regulatory agencies. This resource intensive process discourages continuous improvement and often results in …
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Twofish: Automatic Edit Cascading for Diagrams
… tedious and time consuming. When a user makes a small change to a diagram element, they often have to make additional downstream edits to fully propagate the change to the diagram. This is because these relative positioning constraints are often defined through layout commands, such as alignment, …
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Experimentelle und numerische Untersuchung magerer Methan-Hochdruckverbrennung unter Mikrogravitation
… instabilities were different to each other and a small change in the initial conditions had a large influence on the behavior of the flame front. The numerical simulations of one-dimensional plane flames in an idealized combustion chamber were conducted with the program FlameMaster. Both the …
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Pitchfork bifurcations of invariant manifolds
… when the qualitative structure of the solutions changes due to a small change in the parameter, the system is said to have undergone a bifurcation. Bifurcations have been classified on the basis of the topological properties of fixed points and invariant manifolds of dynamical systems. A …
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Propoetides
… the blood hardened in their cheeks, and only a small change turned them into hard flints. The fifteen-minute work is scored for seven vocal soloists, women’s chorus, flute, oboe, clarinet, bassoon, horn, percussion, piano and strings. This setting of the myth (the libretto by the composer, with …
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