Results 21 to 30 of about 2,209,460 (296)
Finite Length Analysis of Low-Density Parity-Check Codes on Impulsive Noise Channels
IEEE Access, 2016 Low-density parity-check (LDPC) codes with very long block lengths are well known for their powerful error correction, but it is not always desirable to employ long codes in communication systems, where latency is a serious issue, such as voice and video
Zhen Mei +3 more
doaj +1 more source
Neutrino oscillations with three flavors in matter of varying density [PDF]
, 2001 In this paper, we discuss the evolution operator and the transition probabilities expressed as functions of the vacuum mass squared differences, the vacuum mixing angles, and the matter density parameter for three flavor neutrino oscillations in matter ...
Ohlsson, Tommy, Snellman, Hakan
core +2 more sources
The Cosmic Evolution of the Galaxy Luminosity Density [PDF]
The Astrophysical Journal, 2003 We reconstruct the history of the cosmic star formation in the universe by means of detailed chemical evolution models for galaxies of different morphological types. We consider a picture of coeval, non-interacting evolving galaxies where ellipticals experience intense and rapid starbursts within the first Gyr after their formation, and spirals and ...
CALURA F., MATTEUCCI, MARIA FRANCESCA
openaire +3 more sources
Pion Scalar Density and Chiral Symmetry Restoration at Finite Temperature and Density [PDF]
, 1999 This paper is devoted to the evaluation of the pionic scalar density at finite temperature and baryonic density. We express the latter effect in terms of the nuclear response evaluated in the random phase approxima- tion.
Chanfray, G. +4 more
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Evolution of the cosmological density distribution function [PDF]
, 2000 We present a new calculation for the evolution of the 1-point Probability Distribution Function (PDF) of the cosmological density field based on an exact statistical treatment.
Taylor, Andrew, Watts, Peter
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On the Evolution of the Central Density of Quiescent Galaxies [PDF]
The Astrophysical Journal Letters, 2017 Abstract We investigate the origin of the evolution of the population-averaged central stellar mass density (Σ1) of quiescent galaxies (QGs) by probing the relation between stellar age and Σ1 at z ∼ 0. We use the Zurich ENvironmental Study (ZENS), which is a survey of galaxy groups with a large fraction of satellite galaxies. QGs shape a
Sandro Tacchella +7 more
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IEEE Access, 2018 In this paper, we address a number of weaknesses of the windowed decoding of spatially coupled low-density parity-check (SC LDPC) codes and propose three modifications that simultaneously improve its performance, complexity, and latency.
Inayat Ali +4 more
doaj +1 more source
The average structural evolution of massive galaxies can be reliably estimated using cumulative galaxy number densities [PDF]
, 2017 Galaxy evolution can be studied observationally by linking progenitor and descendant galaxies through an evolving cumulative number density selection. This procedure can reproduce the expected evolution of the median stellar mass from abundance matching.
Clauwens, Bart +3 more
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Orthopedic Reviews, 2021 The aim of our study is to evaluate clinical long-term results and determine changes in periprosthetic bone density of the custom-made hip prostheses Evolution-K® and Adaptiva®.
Steffen Axt +6 more
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The Linear Boltzmann Equation as the Low Density Limit of a Random Schrodinger Equation [PDF]
, 2005 We study the evolution of a quantum particle interacting with a random potential in the low density limit (Boltzmann-Grad). The phase space density of the quantum evolution defined through the Husimi function converges weakly to a linear Boltzmann ...
DAVID ENG +3 more
core +3 more sources