Showing items related by title, author, creator and subject.

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  Examining the Effects of Economic Power on the Perception of Power Among the Bric Countries

  Pont, Ryan (The University of Arizona., 2013)

  As globalization begins to mature, where more varied nations and economies participate in international governmental organizations such as the International Monetary Fund (IMF) and the World Trade Organization (WTO), states economic strength becomes more visible. However, in the traditional capitalist approach, economic players and nations are looking to capitalize on burgeoning markets. But how do nations and investors select up and coming nations? Where do those perceptions come into play?
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  Market power in electric power markets: Indications of competitiveness in spatial prices for wholesale electricity

  Denton, Michael John, 1955- (The University of Arizona., 1997)

  The issue of market delineation and power in the wholesale electric energy market is explored using three separate approaches: two of these are analyses of spatial pricing data to explore the functional size of the markets, and the third is a series of experimental tests of the effects of different cost structures and market mechanisms on oligopoly strength in those markets. An equilibrium model of spatial network competition is shown to yield linear relationships between spatial prices. A data set comprising two years of spatial weekly peak and off-peak prices and weather for 6 locations in the Western States Coordinating Council and the Southwest Power Pool is subjected to a pairwise cointegration analysis. The use of dummy variables to account the the flow directions is found to significantly improve model performance. The second analytical technique utilizes the extraction of principal components from a spatial price correlation matrix to identify the extent of natural markets. One year of daily price observations for eleven locations within the WSCC is compiled and eigenvectors are extracted and subjected to oblique rotation, each of which is then interpreted as representing a separate geographic market. The results show that two distinct natural markets, correlated at 84%, account for over 96% of the variation in the spatial prices in the WSSC. Together, the findings support the assertion that the wholesale electricity market in the Western U.S. is large and highly competitive. The experimental analysis utilizes a radial three node network in which suppliers located at the outer nodes sell to buyers located at the central node. The parameterization captures the salient characteristics of the existing bulk power markets, and includes cyclical demand, transmission losses, as well as fixed and avoidable fixed costs for all agents. Treatments varied the number of sellers, the avoidable fixed cost structures, and the trading mechanism. Results indicated that sealed bid markets greatly reduced the ability of sellers to exert market power. Overall the existence of higher avoidable fixed costs tended to ameliorate market power effects.
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  A Power Combiner for Step Level High Power UHF Solid State Transmitters

  Rose, B. E.; Hughes Aircraft Company (International Foundation for Telemetering, 1969-09)

  A combining network is described which satisfies the requirements of low loss, compact size and input port selection capability. This power combiner, which follows a basic network scheme suggested by E. J. Wilkinson, uses helical wound quarter wave lines for impedance matching, relays for switching inputs in or out, and thick film resistors in the isolation network. The combiner was designed for a UHF solid-state transmitter for a communications satellite. The power level is in excess of 300 watts. From 8 to 16 inputs, from coherently driven power amplifiers, can be selected by command. This step level feature provides a very useful means to achieve maximum utilization of prime power as well as an improvement in reliability through redundancy. Design equations are given for the units. The results of a computer study of losses due to unequal input phases and amplitudes are presented. The equivalent circuit of the network, including parasitics, is described and the compensating elements are discussed. Tests have been made on the completed flight unit, and these results are plotted and discussed.