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 1451 for “"Surge"”.
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Active control of centrifugal-compressor surge
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Containerization of unit equipment during surge deployments
… of containers to transport unit equipment during surge phase deployments and to appraise transportation decision-makers of potential problem areas. This thesis provides an overview of container operations during Operation Desert Shield/Desert Storm. It examines the effects of containerization of …
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Investigation of Surge-Type Glaciers in Svalbard
The factors affecting the distribution of surge-type glaciers and the causes of the surge mechanism are not fully understood. Statistical analyses of glaciers in Svalbard have been used to identify characteristics which are related to surging. Field experiments were undertaken on Bjuvbreen, a small …
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Hydrodynamic modelling of the oscillating wave surge converter
… the numerical modelling of the Oscillating Wave Surge Converter (OWSC). The OWSC is a bottom hinged, flap-type, pitching wave energy converter. The device is installed in shallow water (10 - 15 metres} and covers the entire water column from the sea floor to the water surface. Its motion is …
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SURGE : the Secure Cloud Storage and Collaboration Framework
SURGE is a Secure Cloud Storage and Collaboration Framework that is designed to be easy for application developers to use. The motivation is to allow application developers to mimic existing cloud based applications, but make them cryptographically secure, in addition to allowing application …
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Surge dynamics of a helicopter engine gas generator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
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Nonlinear active control of rotating stall and surge
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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Glacier Surge Dynamics on Western Axel Heiberg Island, Nunavut
Surge-type glaciers experience cyclical variations between long periods of slow flow, followed by shorter periods of rapid flow. These glaciers have been thoroughly analysed in many regions, but detailed studies of surging in the Canadian Arctic are lacking. This thesis provides the first …
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Port Infrastructure Resilience through Combined Wind-Surge Demand Characterization
… used to design dockside container cranes, storm surge often accompanies severe wind events and can create large structural loads. This study focuses on determining coupled storm-surge demands and the effect of waves on dockside container cranes. A damage index prediction tool that considers both …
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Dynamic control of centrifugal compressor surge using tailored structure
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Surge dynamics and unsteady flow phenomena in centrifugal compressors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Surge-energy and Overvoltage Robustness of Cascode GaN Power Transistors
Surge-energy robustness is essential for power devices in many applications such as automotive powertrains and electricity grids. While Si and SiC MOSFETs can dissipate surge energy via avalanche, the GaN high-electron-mobility transistor (HEMT) has no avalanche capability and withstands surge …
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THE GRAY ZONE SURGE: RUSSIA’S MARITIME SUBVERSION IN THE BALTIC SEA
This thesis examines the extent and nature of Russia's gray zone tactics in the maritime domain within the Baltic Sea Region (BSR). States utilize gray zone tactics when they act through kinetic and non-kinetic means that allow them to stay below the threshold of conventional war. To support …
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A Hybrid Vortex Solution for Surge Margin Enhancement in Axial Compressors
… hub, but has great potential for increasing the surge margin of a compressor. It also demonstrated an 11% increase in the mass flow operational range over that of the baseline blade during off-design conditions.</p>
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Development of the induced gonadotropin surge mechanism in the prepubertal heifer
… to determine at what age gonadotropin surges could be induced. Two-, four-, six-, and eight-month-old heifer calves were challenged with GnRH or estradiol. Blood was sampled from the jugular vein every 15 minutes for 6 hours or hourly for 30 hours, for the two treatments, respectively. …
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UNDERSTANDING THE IMPACTS OF TOPOBATHYMETRIC DATA ON STORM SURGE MODEL PREDICTIONS
… This directly impacts the resulting storm surge during a hurricane. The primary goal of this research was to gain a better understanding of the impact that topography and bathymetry have on storm surge models, particularly the Advanced Circulation (ADCIRC) Model. Hurricane Zeta (2020) and …
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OSCILLATING SURGE WAVE ENERGY CONVERTER GEOMETRY OPTIMIZATION FOR DIRECT SEAWATER DESALINATION
… an analysis of scaled down flap-type oscillating surge wave energy converter (OSWEC) geometries and their effects on the power output. The performance of the OSWEC was tested using different flap shapes in addition to different configurations of thickness, density, and center of mass. The tested …
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Tailored Base Surge Policy for Middle Echelon in Biologics Supply Chain
… the opportunity of implementing a tailored base-surge policy (TBS) for multiple-sourced global products. A TBS policy would generally leverage differences in manufacturing site lead time characteristics to deliver a high level of service with less inventory. In a global market, a quota …
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The Dynamics of Stall and Surge Behavior in Axial-Centrifugal Compressors
The phenomena of stall and surge in axial-centrifugal compressors is investigated through high-response measurements of both the pressure field and the flowfield throughout the surge cycle. A unique high-response forward-facing and aft-facing probe provides flow information. Several …
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