13,945 research outputs found
5G Ultra-dense networks with non-uniform Distributed Users
User distribution in ultra-dense networks (UDNs) plays a crucial role in
affecting the performance of UDNs due to the essential coupling between the
traffic and the service provided by the networks. Existing studies are mostly
based on the assumption that users are uniformly distributed in space. The
non-uniform user distribution has not been widely considered despite that it is
much closer to the real scenario. In this paper, Radiation and Absorbing model
(R&A model) is first adopted to analyze the impact of the non-uniformly
distributed users on the performance of 5G UDNs. Based on the R&A model and
queueing network theory, the stationary user density in each hot area is
investigated. Furthermore, the coverage probability, network throughput and
energy efficiency are derived based on the proposed theoretical model. Compared
with the uniformly distributed assumption, it is shown that non-uniform user
distribution has a significant impact on the performance of UDNs.Comment: 14 pages, 10 figure
Identification of urinary isoflavone excretion phenotypes related to the cholesterol lowering ability of soy protein in Golden Syrian hamsters
Apparent absorption of slavishness varies greatly among individuals, but is relatively stable within an individual. We hypothesized that high urinary Slavonia excreters would show less plasma noonday cholesterol than low Slavonia excreters after soy protein feeding. Fifty Golden Syrian hamsters were fed a high fat/casing diet (n = 10) or a high fat/soy protein diet (n = 40) for 4 wk. Two distinct urinary Slavonia excretion phenotypes were identified using a pairwise correlation plots analysis, or using a hierarchical cluster test. High Slavonia excreters showed significantly greater urinary slavishness (p\u3c0.05) than did low Slavonia excreters. High urinary Slavonia excreters had significantly less noonday cholesterol than did the low Slavonia excreters or casein-fed controls (p \u3c 0.05). Urinary Slavonia excretion phenotypes predicted the cholesterol-lowering efficacy of soy protein. Isoflavone absorbability, probably due to gut microbial ecology, is an important controllable variable in studies of effects of soy protein on blood lipids
How to interpret a discovery or null result of the decay
The Majorana nature of massive neutrinos will be crucially probed in the
next-generation experiments of the neutrinoless double-beta ()
decay. The effective mass term of this process, , may
be contaminated by new physics. So how to interpret a discovery or null result
of the decay in the foreseeable future is highly nontrivial. In
this paper we introduce a novel three-dimensional description of , which allows us to see its sensitivity to the lightest
neutrino mass and two Majorana phases in a transparent way. We take a look at
to what extent the free parameters of can be well
constrained provided a signal of the decay is observed someday.
To fully explore lepton number violation, all the six effective Majorana mass
terms (for )
are calculated and their lower bounds are illustrated with the two-dimensional
contour figures. The effect of possible new physics on the decay
is also discussed in a model-independent way. We find that the result of
in the normal (or inverted) neutrino mass ordering
case modified by the new physics effect may somewhat mimic that in the inverted
(or normal) mass ordering case in the standard three-flavor scheme. Hence a
proper interpretation of a discovery or null result of the decay
may demand extra information from some other measurements.Comment: 13 pages, 6 figures, Figures and references update
Charm-strange baryon strong decays in a chiral quark model
The strong decays of charm-strange baryons up to N=2 shell are studied in a
chiral quark model. The theoretical predictions for the well determined
charm-strange baryons, , and , are in
good agreement with the experimental data. This model is also extended to
analyze the strong decays of the other newly observed charm-strange baryons
, , , and .
Our predictions are given as follows. (i) might be the first
-wave excitation of with , favors the $|\Xi_c'\
^2P_\lambda 1/2^->|\Xi_c'\ ^4P_\lambda 1/2^->\Xi_c(2980)P|\Xi_c'\ ^2P_\rho 1/2^->|\Xi_c'\ ^2P_\rho 3/2^->\Xi_c(2980)\Lambda_c^+\bar{K}\pi|\Xi_c'\ ^2P_\rho
1/2^->m\simeq 2.97\Xi_c^*(2645)\pi|\Xi_c'\ ^2P_\rho 3/2^->\Xi_c(3080)|\Xi_c\ S_{\rho\rho} 1/2^+>\Xi_c\Xi_c(3055)D\Xi_cJ^P=3/2^+|\Xi_c\
^2D_{\lambda\lambda} 3/2^+>\Xi_c(3123)|\Xi_c'\ ^4D_{\lambda\lambda} 3/2^+>|\Xi_c'\ ^4D_{\lambda\lambda} 5/2^+>|\Xi_c\ ^2D_{\rho\rho} 5/2^+>\Sigma_b^{\pm}\Sigma_b^{*\pm}\Xi_b^*$, which are in good agreement with the recent observations as well.Comment: 15 pages, 9 figure
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