Learn More
A single-phase-to-three-phase converter for a low-cost AC motor drive is proposed. The converter employs only six switches and incorporates a front-end half-bridge active rectifier structure that provides the DC link with an active input current shaping feature, which results in sinusoidal input current at close to unity power factor. The front-end(More)
— While conventional cryptographic security mechanisms are essential to the overall problem of securing wireless networks, they do not directly leverage the unique properties of the wireless domain to address security threats. The wireless medium is a powerful source of domain-specific information that can complement and enhance traditional security(More)
The industrial and research communities in Software Engineering have shown great interest in Software Process Improvement initiatives. There are variety of process improvement that addresses the process improvement practices for software processes and services. Organizations initially started with single model implementation and progresses for more process(More)
The first power management option in integrated SiC is presented in this paper. This linear voltage regulator consists of an error amplifier and a W/L=32,000 depletion NMOS as the pass device. The feedback and frequency compensation networks are external. Due to the developing nature of SiC processes, the voltage reference used for the error amplifier is(More)
This paper demonstrates the first reported high temperature voltage comparator in CMOS silicon carbide. The comparator was designed in a 1.2 μm CMOS SiC process and has been tested for a voltage supply of 12 V to 15 V. The rail to rail voltage comparator has been tested up to 450°C with rise and fall times of 31 ns and 22 ns respectively, and(More)
Many believe that employees' health and economic factors plays an important role in their likelihood to purchase health insurance. However decision to purchase health insurance is not trivial matters as many risk factors that influence decision. This paper presents a decision model using fuzzy inference system to identify the likelihoods of purchasing(More)
—The Neuro-Fuzzy hybridization scheme has become of research interest in pattern classification over the past decade. The present paper proposes a novel Modified Adaptive Fuzzy Inference Engine (MAFIE) for pattern classification. A modified Apriori algorithm technique is utilized to reduce a minimal set of decision rules based on input output data sets. A(More)
This paper presents the first operational digital to analog converter at 400°C. The 8 bit R-2R ladder DAC was designed in the Raytheon 1.2 μm CMOS HiTSiC process. The data converter is also the first of its kind in SiC. It has been tested with a supply voltage between 12 V and 15 V, and reference voltages of 5 V to 8 V. At 400°C, the(More)
The Neuro-Fuzzy hybridization scheme has become of research interest in pattern classification over the past decade. The present paper proposes a hybrid Modified Adaptive Fuzzy Inference Engine (MAFIE) for pattern classification. A modified Apriori algorithm technique is utilized to reduce a minimal set of decision rules based on input output data set. A(More)
Requirements engineering (RE) is considered important in producing successful software projects and quality software products. Researches in RE have proven that requirements errors affect the software product quality. The overall aim of this research paper is to design and document a requirements engineering process improvement approach to facilitate the(More)