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Articles 1 - 6 of 6
Full-Text Articles in Electrical and Computer Engineering
Characterization Of An E2v Charge-Coupled Device For The Michelson Interferometer For Global High-Resolution Thermospheric Imaging Instrument, James Beukers
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis presents the characterization process of an imaging device for a satellite. The camera system was built by the Space Dynamics Laboratory (SDL) and will be used in the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument for National Aeronautics and Space Administration's (NASA) Ionospheric Con- nection Explorer (ICON) satellite. This mission will further scientists' understanding of the connection between the Earth's weather and ionospheric conditions. The ionosphere, a part of the atmosphere, interferes with satellite communications, causing disturbances and disruptions. By learning more about the ionosphere through the data collected by this instrument, scientists will better understand …
Attacker-Induced Traffic Flow Instability In A Stream Of Automated Vehicles, Daniel D. Dunn
Attacker-Induced Traffic Flow Instability In A Stream Of Automated Vehicles, Daniel D. Dunn
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Highway systems world wide continue to see an ever increased number of vehicles and subsequently a rise in congested traffic. This results in longer commute times, wasted energy as vehicles idle in stop and go traffic, and increases the risk of accidents. In short, increased congestion costs time and money. These issues have prompted much research into Automated Highway Systems (AHS). In AHS vehicles using computer algorithms can safely travel at much smaller inter-vehicle distances than human drivers are capable of. This increases the capacity of existing highway systems. Sensors aboard each vehicle make this possible by monitoring their surroundings. …
Optimization And Control Of Lumped Transmitting Coil-Based In-Motion Wireless Power Transfer Systems, Nazmul Hasan
Optimization And Control Of Lumped Transmitting Coil-Based In-Motion Wireless Power Transfer Systems, Nazmul Hasan
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
This thesis explores optimization and control aspects of in-motion electric vehicle charging. The vision is of an electrified roadway, where the vehicles can move and charge at the same time. The present systems have long tracks embedded in the roadway which transfer energy. This thesis explores smaller coils in the road, which has the promise of higher efficiency and lower volt ampere ratings. The promise can only be realized through optimized design and synchronized control of charging with respect to vehicle position. The existing design procedures lack comprehensiveness, require designer experience and use computationally costly 3D FEM algorithms. The proposed …
Microscopic Modeling Of Crowds Involving Individuals With Physical Disability: Exploring Social Force Interaction, Daniel S. Stuart
Microscopic Modeling Of Crowds Involving Individuals With Physical Disability: Exploring Social Force Interaction, Daniel S. Stuart
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nearly one quarter of a population is affected by a disability which influences crowd evacuation. Emergencies such as stampede or crowd crush can occur during evacuations. While research has investigated crowd evacuation, little has been researched involving individuals with disabilities. There is a need to understand and model individuals with disabilities in their interaction and how it impacts crowd movement. This dissertation creates a video tracking system to study heterogeneous crowds with individuals with disabilities towards conducting crowd experiments. A large-scale crowd experiment is conducted and the results are analyzed through a developed analysis graphical user interface. Preliminary results of …
Design Of Reliable And Secure Network-On-Chip Architectures, Dean Michael B Ancajas
Design Of Reliable And Secure Network-On-Chip Architectures, Dean Michael B Ancajas
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The trend towards massive parallel computing has necessitated the need for an On-Chip communication framework that can scale well with the increasing number of cores. At the same time, technology scaling has made transistors susceptible to a multitude of reliability issues. This dissertation demonstrates design techniques that address both reliability and security issues facing modern NoC architectures. The reliability and security problem is tackled at different abstraction levels using a series of schemes that combine information from the architecture-level as well as hardware-level in order to combat aging effects and meet secure design stipulations while maintaining modest power-performance overheads.
Two Types Of Conformal Antennas For Small Spacecrafts, Salahuddin Tariq
Two Types Of Conformal Antennas For Small Spacecrafts, Salahuddin Tariq
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Spacecraft and vehicular bodies often require antennas that are conformal to their surface. The advantage of this choice is that they do not suffer from air drag or breakage and can be formed into any desirable shape. We can make them to operate at those frequencies at which simple wire antennas will require considerably longer length. Our thesis is about conformal antenna design for two space projects. The first project involves an array of patch antennas placed on multi-layer cylindrical substrate. Four of these antennas are S-band and four of them are GPS-band antennas. The second project deals with the …