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 52 for “"power outputs"”.
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Effects of a High-Volume, Low-Intensity, Multi-Set Squat Protocol on Power Outputs
No abstract prepared.
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Types of turbomachinery best suited for space missions requiring power outputs in the range of few Kw to 1 Mw
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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A probabilistic production simulation approach for systems with integrated concentrated solar plants with thermal energy storage
… of the multi-site CSP variable effects in power systems into which they are integrated. Thus, the assessment of CSPs sets up an acute need for a practical simulation approach to emulate operations of the systems with integrated CSP resources and to evaluate their variable impacts. Such an …
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On the Mechanism of Hydrovoltaic Power Generation: Insights Into the Design and Function of Hydrovoltaic Devices
… has emerged enabling the generation of renewable power from the transfer of ambient thermal energy involved in water evaporation. Since the first hydrovoltaic devices were reported in 2017 significant progress has been made in increasing the power outputs of devices, with a view to enabling …
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Control of voltage stability on EHV power systems
Collapses of power systems following severe disturbances leading to voltage stability are occurring with increasing frequency throughout the world. From an analysis of reported incidents, four distinct types of voltage instability have been identified: (1) Classic System Voltage Instability; (2) …
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Optimization and hybridization of membrane-based oxy-combustion power plants
… and hybridization of advanced zero emissions power (AZEP) cycles. More specifically, existing flowsheets for zero and partial emissions are optimized, and new integration schemes with solar energy are proposed and analyzed. First, optimal design and operation of AZEP cycles, both zero and …
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Active Management of Distributed Generation based on Component Thermal Properties
Power flows within distribution networks are expected to become increasingly congested with the proliferation of distributed generation (DG) from renewable energy resources. Consequently, the size, energy penetration and ultimately the revenue stream of DG schemes may be limited in the future. This …
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Development of mesoscale burner arrays for next generation compact gas turbines
… flexibly accommodate a wide range of combustion power outputs. The combustion characteristics of the mesoscale burner array were experimentally investigated using several optical diagnostic and analysis techniques. Lean blow off limit, flame temperature, and NO emission measurements were …
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A 20 dBm 5-14 GHz power amplifier with integrated planar transformers in SiGe
… at the element level. This work describes a power amplifier that can be used at the element level. The design methodology for a single stage amplifier in a Silicon Germanium Bipolar process covering 5-14 GHz is discussed. Simulation results and measurement results closely match and show peak …
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Piezoelectric Energy Harvesting for Roadways
… have drawn much attention as an alternative power source of roadway accessories in different scales. Piezoelectric energy harvesting consisting of PZT piezoceramic disks sealed in a protective package is developed in this work to harness the deformation energy of pavement induced by traveling …
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Determining the Maximal Physiological Steady State in Cycling with Precision: Critical Power Estimations or Self-selected Exercise Intensity?
Giving the inherent limitations of critical power (CP) testing and the demanding maximal lactate steady state (MLSS) protocol, this thesis aimed: i) to compare the power outputs (POs) derived from two methods of estimating CP (i.e., the power-time relationship (CPHYP) and the 3-minute all-out test …
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High power shunt regulation of spacecraft solar arrays
… system is analyzed for stability with a constant power load. The implications of using switching type shunt elements for high power outputs are investigated. The input filter is shown to affect the closed loop design of the system, as well as its weight. Analysis and modeling techniques are …
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Design of a heat transfer subsystem using a real time expert system
… the system) to obtain a plausible design of the power plant. The design and operational parameters for various components of the power plant are optimized for a given level of power output, using a numerical algorithm; An expert tool, G2 developed by the Gensym Corporation is used in creating the …
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Effects of a powered ankle prosthesis on shock absorption and residual limb/socket interface pressure
… behavior by generating human-like responses and power outputs. The closer we come to natural biology, gait abnormalities in amputees will decline. This project compares the first bionic ankle prosthesis to commonly used passive prostheses to determine how more biomimetic adaptability and work …
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The Design and Experimental Optimization of a Wingtip Vortex Turbine for General Aviation Use
… to turn a generator, which could be used to power onboard applications during normal or emergency flight operations. A 1/4-scale model of a thrust-producing WVT has been designed and tested in a wind tunnel for optimal drag reduction and power generation for general aviation aircraft — …
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Physiological Responses in OSA Patients to Ramping Exercise After CPAP Treatment
… rating of perceived exertion (RPE) at identical power outputs (60% of the individual's apparent functional capacity). Statistical significance was not attained (p>0.05) upon analysis of the following parameters at 60% of the individuals maximum workload although there was a trend showing a …
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Assessing the anaerobic characteristics of children
… the effects of varying resistances on the power outputs of children performing the Wingate anaerobic test (WAnT). The second study examined the extent to which children (6-12-yr-old) varied in their performance of power ouputs during WAnTs. A need for identifying the variability of …
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Optimizing cycling power
… we determine a viable bioenergetic model for power allocation during a cycling race. Various models have been proposed to address power allocation in races with two models rising above others: the Morton-Margaria Three Tank model and the Skiba Energy Balance model. The energy balance model was …
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Measuring cycling kinematics using a low-cost, flashing LED, multi-camera approach
… bikes, and mountain bikes. Coupled with power output measurement and wind tunnel drag measurements, the investigation of several different standard cycling positions is performed. The results indicate a significant component of out-of- plane joint motions, especially in the knee, with an …
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