5,914 research outputs found
The high energy limit of the trajectory representation of quantum mechanics
The trajectory representation in the high energy limit (Bohr correspondence
principle) manifests a residual indeterminacy. This indeterminacy is compared
to the indeterminacy found in the classical limit (Planck's constant to 0)
[Int. J. Mod. Phys. A 15, 1363 (2000)] for particles in the classically allowed
region, the classically forbiden region, and near the WKB turning point. The
differences between Bohr's and Planck's principles for the trajectory
representation are compared with the differences between these correspondence
principles for the wave representation. The trajectory representation in the
high energy limit is shown to go to neither classical nor statistical
mechanics. The residual indeterminacy is contrasted to Heisenberg uncertainty.
The relationship between indeterminacy and 't Hooft's information loss and
equivalence classes is investigated.Comment: 12 pages of LaTeX. No figures. Incorporated into the "Proceedings of
the Seventh International Wigner Symposium" (ed. M. E. Noz), 24-29 August
2001, U. of Maryland. Proceedings available at
http://www.physics.umd.edu/robo
Welcher Weg? A trajectory representation of a quantum Young's diffraction experiment
The double slit problem is idealized by simplifying each slit by a point
source. A composite reduced action for the two correlated point sources is
developed. Contours of the reduced action, trajectories and loci of transit
times are developed in the region near the two point sources. The trajectory
through any point in Euclidian 3-space also passes simultaneously through both
point sources.Comment: 12 pages LaTeX2e, 9 figures. Typos corrected. Author's final
submission. A companion paper to "Interference, reduced action, and
trajectories", quant-ph/0605120. Keywords: interference, Young's experiment,
entanglement, nonlocality, trajectory representation, determinis
Pre-service Teachers\u27 Perceptions of Character Education
The purpose of this study was to assess pre-service teachers’ support for character education and analyze their perceptions of character education as an effective deterrent to negative school behaviors. In addition, the author of this study sought to ascertain pre-service teachers’ opinions regarding the importance of character education in undergraduate teacher education courses. The instrument utilized in this study was PPCES (Pre-service Teacher Perceptions of Character Education Survey). The study’s sample consisted of pre-service teachers enrolled in an undergraduate course at a mid-western university in February 2002. Character education received high levels of support and pre-service teachers felt character education was an effective deterrent to anti-social behavior. Pearson correlation coefficients revealed a statistically significant relationship between pre-service teachers’ support for character education and their perception of character education as a deterrent to school discipline problems and school violence. In addition, pre-service teachers supported the notion of including character education issues in undergraduate teacher education courses
Conodont biostratigraphy of the Crawford Group, Southern Uplands, Scotland
Extensive new conodont collections from the Crawford Group, the oldest succession in the Southern Uplands of Scotland, support the previously documented biostratigraphical ages for the included formations. The Raven Gill Formation is lower Whitlandian, Arenig (comparable in age to the Dounans Limestone in the Highland Border Complex) and the Kirkton Formation is latest Llandeilian-Aurelucian, Llanvirn to Caradoc in age. It is concluded that there is a significant stratigraphical gap within the Crawford Group. The restricted and probably fault-bounded nature of the Raven Gill outcrops suggests that these may represent olistoliths within a mélange of Llandeilian-Aurelucian age. The chert-bearing succession of the Northern Belt of the Southern Uplands thus represents the juxtaposed sedimentary records of two entirely separate basins – the oldest pre-dates the Grampian assembly of the Laurentian margin, and the younger, the Northern Belt Basin sensu stricto, entirely post-dates this event
Racial Profiling of African-American Males: Stopped, Searched, And Stripped Of Constitutional Protection, 38 J. Marshall L. Rev. 439 (2004)
Populist Conundrum: Big Banks or Plaintiffs\u27 Bar? Banks Win as Congress Overrides the CFPB Rule Banning Class Action Waivers in Arbitration Agreements
The History of Claims Against the United States: The Evolution from a Legislative Toward a Judicial Model of Payment
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