5,954 research outputs found
Updates to the Dualized Standard Model on Fermion Masses and Mixings
The Dualized Standard Model has scored a number of successes in explaining
the fermion mass hierarchy and mixing pattern. This note contains updates to
those results including (a) an improved treatment of neutrino oscillation free
from previous assumptions on neutrino masses, and hence admitting now the
preferred LMA solution to solar neutrinos, (b) an understanding of the
limitation of the 1-loop calculation so far performed, thus explaining the two
previous discrepancies with data, and (c) an analytic derivation and
confirmation of the numerical results previously obtained.Comment: 15 pages, Latex, 1 figure using ep
Identification of Outlying Observations with Quantile Regression for Censored Data
Outlying observations, which significantly deviate from other measurements,
may distort the conclusions of data analysis. Therefore, identifying outliers
is one of the important problems that should be solved to obtain reliable
results. While there are many statistical outlier detection algorithms and
software programs for uncensored data, few are available for censored data. In
this article, we propose three outlier detection algorithms based on censored
quantile regression, two of which are modified versions of existing algorithms
for uncensored or censored data, while the third is a newly developed algorithm
to overcome the demerits of previous approaches. The performance of the three
algorithms was investigated in simulation studies. In addition, real data from
SEER database, which contains a variety of data sets related to various
cancers, is illustrated to show the usefulness of our methodology. The
algorithms are implemented into an R package OutlierDC which can be
conveniently employed in the \proglang{R} environment and freely obtained from
CRAN
Degeneracy of Landau Level and Quantum Group SL_q(2)
We show that there is a kind of quantum group symmetry in the
usual Landau problem and it is this quantum group symmetry that governs the
degeneracy of Landau levels. We find that under the periodic boundary
condition, the degree of degeneracy of Landau levels is finite, and it just
equals the dimension of the irreducible cyclic representation of the quantum
group .Comment: 10 pages, Preprint ( reprint ) of Nankai Institute of Mathematics.
For hard copy, write to Prof. Mo-lin GE, Director of Nankai Institute of
Mathematics. Do not send emails to this computer accoun
Experimental investigation on thermal comfort model between local thermal sensation and overall thermal sensation
To study the human local and overall thermal sensations, a series of experiments under various conditions were carried out in a climate control chamber. The adopted analysis method considered the effect of the weight coefficient of local average skin temperature and density of the cold receptors’ distribution in different local body areas. The results demonstrated that the thermal sensation of head, chest, back and hands is warmer than overall thermal sensation. The mean thermal sensation votes of those local areas were more densely distributed. In addition, the thermal sensation of arms, tight and calf was colder than the overall thermal sensation, which pronounced that thermal sensation votes were more dispersed. The thermal sensation of chest and back had a strong linear correlation with overall thermal sensation. Considering the actual scope of air-conditioning regulation, the human body was classified into three local parts: a) head, b) upper part of body and c) lower part of body. The prediction model of both the three-part thermal sensation and overall thermal sensation was developed. Weight coefficients were 0.21, 0.60 and 0.19 respectively. The model provides scientist basis for guiding the sage installation place of the personal ventilation system to achieve efficient energy use
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