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A High-Performance Communication Topology For Decentralized Protocols, Raza A. Khan
A High-Performance Communication Topology For Decentralized Protocols, Raza A. Khan
Open Access Theses
Preserving transaction atomicity and ensuring its commitment is key to the maintenance of data integrity in a distributed database. The distributed consensus protocol is a prominent example of a mechanism used to accomplish safe commitment of a distributed transaction. These protocols are based primarily on repeated message exchange among all sites/nodes and their performance is characterized not only by the number of these messages but also by the underlying communication topology. This thesis proposes a measure of performance known as average message complexity and proposes a communication structure based on folded even graphs called the Folded Even Network (FEN). Performance …
Magnetic Equivalent Circuit Based Permanent Magnet Characterization, Vinicius Cabral Do Nascimento
Magnetic Equivalent Circuit Based Permanent Magnet Characterization, Vinicius Cabral Do Nascimento
Open Access Theses
This thesis sets forth a permanent magnet characterization fixture and procedure. The work begins with a review of the state of the art in permanent magnet characterization. It then sets forth a new characterization fixture. The proposed system relies on the use of low cost sensors to perform the necessary measurements, which consists of search coils, hall sensors, and current probes. A magnetic equivalent circuit is set forth to analyze the fixture and for use in identification of permanent magnet parameters. The characterization procedure is based on an experimentally defined magnetic equivalent circuit. An experimental approach to model the tester …