Digitally controlled switching DC-DC converters have recently emerged as an attractive alternative to conventional switching converters based on analog control techniques. This research focuses on eliminating the issues associated with the state of the art switching converters by proposing three novel control techniques: (1) a digitally controlled Buck-Boost converter uses...
The purpose of this thesis is to represent and calculate unsymmetrical
secondary faults on a grounded wye-to-delta transformer
bank.
This thesis is specifically concerned with the secondary connections
often encountered in industrial installations. Faults on these
systems have not been adequately investigated.
Three types of faults are considered, namely:
1....
Halogenated organic compounds have had widespread and massive applications in industry, agriculture, and private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethene (PCE, perchloroethene)...
The United Nations Food and Agriculture Organization (FAO) in the State of World Fisheries and Aquaculture 2018, has observed that the trend of the world’s marine fish stocks has been overexploited, depleted, and has exhibited decreasing trend within the fraction of biologically sustainable levels. While these situations are an alarming...
The detection and identification of Newcastle disease
virus (NDV) has never been straightforward. Serologically
indistinguishable pathotypes produce a wide spectrum of
disease that ranges from a severe respiratory, neurologic,
or enteric disease with high mortality to an asymptomatic
infection. Extensive use of ND vaccine strains further
complicates the serological differentiation...
This study investigated the impact of organic chromium (Cr) supplementation and flaxseed on live performance, carcass yield, serum metabolites, muscle lipid profile, histopathological aspects, and meat quality parameters. Ninety (n=90), day-old Cobb chicks were fed a corn-soybean meal-based diet containing 0% flaxseed (Control), 10% flaxseed (Diet 1) and Diet 1...
This study examined the ralationship of organizational
structure and job satisfaction in Iranain iron companies.
Sixteen of 27 Iranian iron companies were randomly
selected for the study, and 195 middle managers in the 16
companies were surveyed with a three part instrument
consisting of Likert's (1967) Profile of Organizational
Characteristics;...
Structural health monitoring (SHM) systems perform automated non-destructive damage detection and characterization for a variety of large structures including civil structures such as bridges and aerospace structures such as aircrafts and space vehicles. The goals of SHM include preventing catastrophic structural failures, increasing reliability, reducing maintenance costs, and increasing the...
This study is an economic analysis of enrollment demand for
graduate education at Oregon State University as well as in the United
States. For the analysis of Oregon State University data on new
graduate enrollment, data were obtained for 27 academic departments
with 10 observations per department. The most important...
'Amity' red raspberries, 'Chester' blackberries and 'Earliblue' blueberries were subjected to different cooling treatments at 0°C and placed in storage at 0°C. Fruits were cooled 2-4 times faster with forced-air cooling than with room cooling. Cooling treatments had no effect on decay, soluble solids content or citric and malic acid...