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 “"Mode switching"”.
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A fast optical imaging study of frontoparietal preparatory dynamics in response-mode switching
… during the preparatory period of a response-mode switching task. Participants received a pre-cue indicating whether to respond vocally or manually. They then saw or heard the letter “L” or “R”, indicating a “left” or “right” response to be implemented with the appropriate response modality. …
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The integration of education and training in further education and training : towards a pedagogy of mode-switching
The integration of different types and areas of knowledge and skills is being explored for the first time in the official discourse on educational reconstruction in South Africa. The reasons for this are bound up with the country's general global conditions of capital accumulation and its political …
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Mode switching from component manufacturer to system supplier - requirements, opportunities and best practices. A resource-based reflection on R&D
… which is investigated within this study is mode switching - evolution into the next product hierarchy, namely moving from the development and manufacturing of sole components,towards the supply of more complex systems.<br/><br/>An initial review of the extant literature revealed a gap. To …
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Dynamic modeling, simulation, and control of transportation HVAC systems
… Refrigeration (AC&R) systems are ubiquitous in modern society since they perform the key engineering function of transporting thermal energy from one physical location to another. In doing so they are able to change the condition of a defined spatial environment to prescribe a particular …
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Analysis and Design of Hybrid Control Systems
… designs in separate regions together with a switching strategy. Dynamics are not well defined if the control design methods lead to fast mode switching. The dynamics depend on the salient features of the implementation of the mode switches. A theorem for the stability of second order …
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Intelligent Side Information Generation in Distributed Video Coding
… (i) a cubic trajectory interpolation algorithm model that significantly improves the accuracy of motion vector estimations; (ii) an adaptive overlapped block motion compensation (AOBMC) model which reduces both blocking and overlapping artefacts in the SI emanating from the block matching …
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Fault Detection for Systems with Multiple Unknown Modes and Similar Units
… environment. A special class of hybrid system model is introduced to describe such multi-unit systems, and a general approach for estimation and change detection is proposed. A novel fault detection algorithm is developed based on estimating a common Gaussian-mixture distribution for unit …
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Magnetophotonic sensor systems for fibre-optic magnetic diagnostics in tokamak fusion reactors
… achieve this, two spectrally-encoding reflection-mode sensors that function on a purely magnetophotonic basis are developed, since it is shown that only this mechanism will succeed in the fusion environment. By exploiting the nonreciprocality of the Faraday effect, it is shown how fibre Bragg …
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Making Sense of Interaction Using a Model-Based Approach.
… user's perception. The proper representation and modeling of conceptual models in the interaction -via state-space model- and the explicit analysis of human behaviour and adaptability of the system to human behaviour -in the form of dynamic systems and probability theory are inherent to this …
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Pilot Variability During Pilot-Induced Oscillation
… research, this effort backs away from pilot models and PIO avoidance and focuses on the characteristics of the pilot before, during, and after a PIO. Often, PIO''s can be explained by limit cycles occurring in a non-linear system where the non-linearities cause a sustained, constant amplitude …
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Investigation of digital pump/motor control strategies
… during the working cycle.</p> <p>A simulation model was developed to predict the effects of the valve timing on the behavior of the digital pump/motor. Simulation and experimental testing showed that valve timing is crucial for the success of digital pump/motors. This work addressed the valve …
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Modeling and analysis of a H₂-H₂O driven reversible solid oxide cell system for electrical energy storage applications
… MWh) scale using H2-H2O chemistry. A multi-scale modeling approach is employed that moves from one-dimensional cell-level models for stack performance estimation to full-scale systems with balance-of-plant models and equipment cost equations. The one-dimensional cell model is developed and …
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Road User Charging: Acceptability and Effectiveness
… in reducing congestion was evaluated by mode switching of commuters. The research demonstrated the effects of the system benefits (car and bus travel time reduction, environmental improvement and revenue use) and the system features (charging levels, charging methods, charged times and …
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On improving control and efficiency of a portable pneumatically powered ankle-foot orthosis
… gait patterns, functional in different gait modes, and energy efficient. Three studies addressing these topics are presented in this dissertation: (1) estimation of the system state during the gait cycle for actuation control; (2) gait mode recognition and control (e.g., stair and ramp …
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Exciton-polaritons in thermal equilibrium : from Bose-Einstein condensation to exciton-polaritonics
… in quantum wells to the transverse mode of the confined optical field in the cavity. The light-matter dual nature allows direct control of polaritons through either their excitonic or photonic components. By utilizing the fact that polariton-exciton and polariton-polariton …
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A Study of Dynamical and Emission Variabilities in Pulsars
… While it was previously shown that B0611+22 has mode-switching properties, the data presented here show that this pulsar emits bursts with characteristic time-scales of several hundred seconds. At 327 MHz, the pulsar shows steady behavior in one emission mode which is enhanced by bursting …
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Neuroinspired control strategies with applications to flapping flight
… with a full six-degree-of-freedom flight dynamic model validate the effectiveness of the proposed neurobiologically inspired control approach. Further, we present experimental micro aerial vehicle (MAV) research with low-frequency flapping and articulated wing gliding. The importance of phase …
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Investigations into the physical layer of underwater networks to enhance channel capacity and performance.
… (UIoT) needs development to enable usage of modern network applications underwater, particularly regarding sustainable high capacities to enable multimedia transmissions that can monitor industrial or environmental processes. This thesis investigates the nature of the physical layer of …
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