The Troubled Sense of Otherness among Christian and Non-Christian ESL Freshmen at a Christian College in the Midwest

This study was derived from an ethnographic study conducted with five ESL learners and their peers in a Christian college in the Midwest. The theoretical framework of this article was built upon Freire’s (2000) and Kumashiro’s (2001) anti-oppressive education. The study employed various data sources to find out how Christian and non-Christian ESL freshmen experienced a sense of otherness in the local college community. The findings reveal the hidden norms in the faith-based college, which marginalized the non-Christian ESL freshmen from being legitimate participants (Lave & Wenger, 1991). The researcher provides recommendations to educators and administrators in higher education for advising international students and providing services to them. The researcher also highlights the importance of having a deeper understanding of the plights experienced by non-Christian ESL freshmen at Christian colleges in the USA

Efficiency and formalism of quantum games

We pursue a general theory of quantum games. We show that quantum games are more efficient than classical games, and provide a saturated upper bound for this efficiency. We demonstrate that the set of finite classical games is a strict subset of the set of finite quantum games. We also deduce the quantum version of the Minimax Theorem and the Nash Equilibrium Theorem.Comment: 10 pages. Efficiency is explicitly defined. More discussion on the connection of quantum and classical game

Comparison of measured and calculated helicopter rotor impulsive noise

The thickness noise theory is discussed. Two full-scale rotors were tested in a wind tunnel with several tips involving changes in chord, thickness, and sweep. Impulsive noise data reduction procedures used are described. The calculated and measured impulsive noise peak pressures as a function of advancing tip Mach number are compared, showing good correlation for all rotors considered

The massless Thirring model in spherical field theory

We use the massless Thirring model to demonstrate a new approach to non-perturbative fermion calculations based on the spherical field formalism. The methods we present are free from the problems of fermion doubling and difficulties associated with integrating out massless fermions. Using a non-perturbative regularization, we compute the two-point correlator and find agreement with the known analytic solution.Comment: 11 pages, 2 figures, journal versio

Near-field angular distributions of high velocity ions for low-power hall thrusters

Experimental angular distributions of high-energy primary ions in the near-field region of a small Hall thruster between 50-200 mm downstream of the thruster exit plane at a range of centerline angles have been determined using a highly-collimated, energy-selective diagnostic probe. The measurements reveal a wide angular distribution of ions exiting the thruster channel and the formation of a strong, axially-directed jet of ions along the thruster centerline. Comparisons are made to other experimental determinations as applicable

High-temperature, long-life polyimide seals for hydraulic actuator rods

Two types of polyimide seals are developed for hydraulic actuator rod in low pressure second stage of two-stage configuration. Each seal melts test objectives of twenty million cycles of operation at 534 K. Analytical and experimental study results are discussed. Potential applications are given