594 research outputs found
Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms
Supersymmetric grand unified theories with non-universal soft supersymmetry
breaking terms are studied. By integrating out the superheavy fields at an
unification scale, we compute their low-energy effective Lagrangian. We find
new contributions to the scalar potential specific to the non-universal
supersymmetry breaking. -term contribution to the scalar masses is one
example. The gauge hierarchy achieved by a fine-tuning in the superpotential
would be violated in general due to the non-universal SUSY breaking terms. We
show, however, it is preserved for a certain class of the soft terms derived
from a {\em hidden} ansatz. We also discuss some phenomenological implications
of the non-universal supersymmetry breaking, including predictions of the
radiative electroweak symmetry breaking scenario and of no-scale type models.Comment: 29 pages, LaTeX, DPSU-9402,LBL-35731,UCB-PTH-94/16,TU-45
Lateral Flow Deformation Evaluation of Ground-Structure System under Various Cyclic Loading Conditions
In order to clarify the mechanical behaviors of sand grounds induced by various loadings including sea wave forces, traffic vibrations and earthquake etc., a series of model tests were carried out on model structure-ground system by using, the two-dimensional plane strain soil box apparatus. It was found that; (1) the lateral flow behavior of ground depends strongly on settlement performance of a structure, (2) the bearing capacity of ground may be evaluated by a failure envelope which is depicted in M-V-H plane irrespective of the difference in loading conditions and (3) the stability of sand ground-structure system can be assessed on the basis of a parameter VÏ/ VÏ which quantifies the lateral flow deformation
Itinerant Ferromagnetism in layered crystals LaCoOX (X = P, As)
The electronic and magnetic properties of cobalt-based layered oxypnictides,
LaCoOX (X = P, As), are investigated. LaCoOP and LaCoOAs show metallic type
conduction, and the Fermi edge is observed by hard x-ray photoelectron
spectroscopy. Ferromagnetic transitions occur at 43 K for LaCoOP and 66 K for
LaCoOAs. Above the transition temperatures, temperature dependence of the
magnetic susceptibility follows the Curie-Weiss law. X-ray magnetic circular
dichroism (XMCD) is observed at the Co L2,3-edge, but not at the other edges.
The calculated electronic structure shows a spin polarized ground state. These
results indicate that LaCoOX are itinerant ferromagnets and suggest that their
magnetic properties are governed by spin fluctuation.Comment: 16 pages, 9 figures, Physical Review B, in press. Received 17
February 2008. Accepted 29 May 200
PITCHING ACCURACY IN PROFFESSIONAL, HIGH SCHOOL AND JUNIOR HIGH SCHOOL PITCHERS
The purpose of this study was to investigate the differences in pitching accuracy among three different age groups. Professional (n=5), high school (n=8), and junior high school (n=11) pitchers were tested. To determine pitching accuracy, pitch locations relative to the catcherâs mitt were fitted to a bivariate normal distribution and a 90% confidence ellipse was obtained for each pitcher. Significant main effects were observed for age group in all of the parameters analysed, including: area, major radius and minor radius. There were significant differences in the minor and major radii of the 90% confidence ellipses between professional and junior high school players. The pitching accuracy of high school and professional players was also significantly greater than that of junior high school players. The superior pitching accuracy demonstrated by professional pitchers may be an important motor skill that is required to pitch at the professional level
Is the National Accreditation System Sufficient? Critique of the System in the United States to Vietnam and Japan Japan Foundation Japan Studies Through Collaboration
Higher education has jumped into the quality movement with expectations of enhancing the excellence of education being received by students. Higher education institutions are becoming a business while knowledge is becoming the commodity, with all aspects of education subject to global trade. There is a need for education to become more efficient, self-sufficient, and accountable. Neo-liberalism reduces governmental subsidies, while shifting costs to the market and consumers. Furthermore, it demands accountability for performance, and emphasize higher educationâs role in the economy. The injection of accountability and accreditation into the educational system is necessary for a quality global educational system. This paper looks at the development of national accreditation within the United States, Vietnam, and Japan. Developing an understanding of the accreditation process will contribute to the literature surrounding accreditation and quality assurance
- âŠ