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2016-01-01
Zarifi, Mohammad H., Daneshmand, Mojgan
A highly sensitive, microwave-coupled ring resonator with a widedynamic range is studied for use in sensing applications. The resonator'sstructure has two resonant rings and, consequently, two resonantfrequencies, operating at 2.3 and 2.45 GHz. Inductive and capacitive coupling mechanisms are...
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Wide Input Voltage Inverter Configurations and Control Systems for Renewable Energy Resources
DownloadFall 2023
Nowadays, among renewable energy sources, PV systems are highly popular due to their easy installation and affordability. A key component of the PV system is the inverter, which can significantly affect the reliability, efficiency, and power quality of the system. The PV inverters are required to...
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Spring 2023
This research deals with wide speed control of permanent magnet synchronous machines (PMSMs) driven by voltage-source converters (VSCs). The objective is to develop a current control algorithm that allows said machines to optimize their torque for any speeds within their operational range, for...
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Wide Speed Range Operation of Concentrated Winding Interior Permanent Magnet Synchronous Machines
DownloadFall 2016
The design, simulation and experimental evaluation of an Interior Permanent Magnet Synchronous Motor (IPMSM) are investigated. The motor is designed to be capable of operation from either a concentrated single inverter supply or in an “Open-Winding” configuration using two converters. In order to...
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Widespread Infection of the Hair Lichen Genus Bryoria (Parmeliaceae) by a Previously Unknown Fungal Pathogen
DownloadFall 2020
Bryoria Brodo & D. Hawksw. (Parmeliaceae, Ascomycota) is one of the dominant genera of hair lichens in western North America and is characteristic of high elevation conifer forest ecosystems. In areas where Bryoria is abundant, it is common to find thalli in which the thalline filaments become...
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Fall 2011
This ethnographic study examines how social structure constrains the well-being of widows in the Kilimanjaro region of Tanzania, explores the role of women’s agency in bettering their lives, and looks at tension between international and local development projects. I collaborated with the Moshi...