This paper evaluates changes in electricity generation costs caused by the introduction of market mechanisms to determine production United States. I use staggered transition markets from 1999 2012 estimate causal impact liberalization using a differences-in-difference design on comprehensive hourly panel demand, generators’ costs, capacities, and output. find that reduce 5 percent reallocating...

Invariant properties of straight homogeneous generalized cylinders and their contours, " [24] K. Rao and R. Nevatia, " Description of complex objects from incomplete and imperfect data, " In International Journal of Computer Vision. [34] M. Zerroug and R. Nevatia, " Quasi-invariant properties and 3-D shape recovery of non-straight, non-constant generalized cylinders " , In Proceedings of Comput...

This chapter presents DISCIPLE, a multi-strategy integrated learning s y s t e m illustrating a theory and a methodology for learning expert knowledge in the con tex t of an imperfect domain theory. DISCIPLE integrates a learning system and an e m p t y expert system, both using the same knowledge base. It is initially provided with a n imperfect (nonhomogeneous) domain theory and learns proble...

A modified extremal Reissner-Nordstrom geometry, void of singularities, is proposed in this work, by means an exponential factor depending on a positive constant k. All the metric coefficients are and finite spacetime has no any horizon. The curvature invariants regular at origin coordinates infinity. energy conditions for stress tensor associate to imperfect fluid investigated. gravitational f...

The principles for measuring the extinction ratio and transmittance of a polarizer are formulated by use of the principal Mueller matrix, which includes both polarization and depolarization. The extinction ratio is about half of the depolarization, and the contrast is the inverse of the extinction ratio. Errors in the extinction ratio caused by partially polarized incident light and the misalig...

Both coherent and differentially coherent PSK (CPSK, DCPSK) systems are currently being used in wireless communications with equal-gain combining diversity. Since recovery of carrier in coherent systems is often imperfect, and results in degradation in system performance, it is invaluable to evaluate the performance of CPSK with imperfect phase and compare it to the performance that can be obta...