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 40 for “"operational modes"”.
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Operational modes for effective recovery of energy from ryegrass using anaerobic digestion
In the United Kingdom a large proportion of agricultural land is laid to grass which is used for grazing and also harvested for animal feed. Grass is also potentially the crop most suited to energy production in the UK because of its high yield, low maintenance and suitability for growing under the …
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Simulation and Comparison of Operational Modes in Simulated Moving Bed Chromatography and Gas-Phase Adsorptive Separation
… part focus on the simulation and comparison of operational modes in simulated moving bed (SMB) chromatography for separation and purification in bioprocesses. The second part includes the simulation of gas-phase adsorptive processes by pressure swing adsorption and temperature swing adsorption …
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Development of Computational Tools for the Design, Simulation and Optimization of Cyclic Steady State (CSS) Adsorption and Chromatographic Processes
… simulations to generate heuristics for choosing operational modes. For the past 15-20 years, there has been a surge of interest in the use of Simulated Moving Bed systems for the chromatographic separation of chemicals¹. A wide variety of methods, nomenclatures, and conventions have been adopted …
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WELCOME TO THE PLANET: FORT LIVING ROOM O ROTTING SUN
… verse, and projective verse. Its chief poetic-operational modes are: inclusion, fragmentation, textual destructions, intentional omissions, intentional misspelling, large narrative leaps; all of which engage a poetics of doubt and multiplicity. <em>O Rotting Sun</em> is a jarring and jangly …
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Development of an isolated flyback converter employing boundary-mode operation and magnetic flux sensing feedback
… of the benefits and disadvantages of various operational modes along with other design options are explored. The flyback converter was built using discrete parts including op-amps, comparators, and other analog building blocks. The goal was to create a proof of concept board to test the …
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Adaptation in multisensory neurons
… (CME) and sub-additive/additive/super-additive operational modes. CME occurs when the response of a multisensory neuron to stimulation in one sensory modality is enhanced, often non-linearly, by temporally and spatially coincident stimulation of a second sensory modality. Response enhancement is …
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DCT Enabled smart consumer Grid Model
… art models, authors used three stages of grid operational modes, which is usually based on different factors such as the status of grid connections, State of charge of Battery storage and output power from locally available sources. However, we introduced four stages excluding buffering stage. …
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Identification and Quantification of Greenhouse Gas Emissions from Oil and Natural Gas Operations Using an Aircraft-Based Mass Balance Technique
… CH4 leaks are common due to changes in operational modes, scheduled ventings to relieve pressure from equipment, equipment aging, and malfunctions, and it is estimated that a CH4 leak rate of 1.5% of facility throughput is enough to negate the climate benefits incurred by use of natural …
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Analysis of microgrid with renewable generation and energy storage system
… is evaluated in both grid-connected and islanded modes. A frequency analysis reveals that the point of common coupling (PCC) frequency is controlled within the operational range of ± 0.3 Hz, according to IEEE Standard I547. This control is achieved using a combination of battery and supercapacitor …
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Dynamic sensor tasking in heterogeneous, mobile sensor networks
… vary with respect to sensor complexity, sensor operational modes, power costs and other salient features. Optimization in this environment requires considering all possible sensor modalities and combinations. Additionally, in many cases there may be a time critical objective, requiring sensor …
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Design and analysis of a frequency reconfigurable antenna for wireless communication at 5 GHz
… The radiation patterns for all the simulated modes were nearly similar, thus implying that the designed antenna can be used for directional communication applications. The antenna substrate dimensions (L, W, H) are 30 x 27 mm and 1.67 mm respectively, while the patch was made from copper. The …
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Design and Development of a Squeeze-Mode Rheometer for Evaluating Magneto-Rheological Fluids
… mode is the least understood of the three operational modes of MR fluid and thus its potential has yet to be realized in practical applications. By identifying the behavior of MR fluid in this mode, the foundation for future development of MR technology will be laid. Using the limited …
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Design synthesis of articulated heavy vehicles with active trailer steering systems
… ATS controller derived from this method has two operational modes: one for improving the lateral stability at high speeds and the other for enhancing path-following at low speeds. To demonstrate the effectiveness of the new SDL method, it is applied to the design of an ATS system for an AHV with …
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Modeling, Analysis and Design of Renewable Energy Nanogrid Systems
… in the laboratory environment covering a few operational modes of the ac-nanogrid, while later in the thesis is shown how dc bus signaling technique could be contemplated for the energy management of the renewable energy sources and their maximal utilization. Thesis however puts more focus on …
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Microbial fuel cells coupled with open pond for wastewater treatment: is it viable?
… SMFCs were studied in several configurations and operational modes for organic removal, nitrate reduction, and energy recovery. When treating an artificial secondary effluent for nitrate removal, the SMFC could remove 44% of the nitrate, higher than that without electricity generation. The …
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Observability and observer design for switched linear systems
… dynamical behaviors whose sequence of operational modes is driven by an underlying decision process. This thesis investigates feasibility conditions and a methodology for state and mode reconstruction given input-output measurements (not including mode sequence). An application herein …
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Digital Control Board for Phased Array Antenna Beam Steering in Adaptive Communication Applications
… computer and the RF board, which results in two operational modes: the MATLAB graphical user interface (GUI) mode and the adaptive receive mode. The GUI mode allows users to input parameters that provide interactive control of the phased antenna array by interfacing with an external computer and …
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Dynamic modeling, validation, and control for vapor compression systems
… of four-component linear models for different modes of operation of a VCS. The nonlinear and linear models are then validated with experimental data to reveal the tradeoffs of each. Furthermore, an augmentation to the switched moving boundary method is derived which captures the effects of air …
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INSIGHT : intelligent navigation system for integrated guidance haptic technologies
… tap and hold gestures to switch between two operational modes: ’General Mode’, which provides auditory announcements of nearby objects, and ’Specific Mode’, which assists in locating a selected object using adaptive vibration intensity. Evaluation was carried out across multiple environments, …
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The study of surface SHG and polygonal microcavity design for nonlinear applications on LiNbO<sub>3</sub>
… the poled LiNbO<sub>3</sub>. <br/><br/>A general operational principle of optical microcavities was discussed, in which a detailed theory governing the operational modes of a resonating hexagonal microcavity, made from bulk LiNbO<sub>3</sub> crystal was reviewed for nonlinear device applications. …
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