Results 41 to 50 of about 2,209,460 (296)
The excitation and evolution of density waves [PDF]
The Astrophysical Journal, 1978 We study the linear oscillations of a thin self-gravitating gas sheet. The unperturbed velocity field of the sheet is a parallel shear flow. A Coriolis acceleration is included to simulate the effects of rotation. The sheet exhibits Lindblad resonances, and it can sustain both short and long wavelength density waves.
Goldreich, Peter, Tremaine, Scott
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Medical Sciences Forum, 2021 The aim of this study is to investigate the impact of climate conditions, altitude, and population density on daily COVID-19 infection evolution.
Rachid Lagtayi +3 more
doaj +1 more source
Quantum stochastic equation for the low density limit [PDF]
, 2002 A new derivation of quantum stochastic differential equation for the evolution operator in the low density limit is presented. We use the distribution approach and derive a new algebra for quadratic master fields in the low density limit by using the ...
Accardi, L. +2 more
core +2 more sources
On the Gap to Channel Capacity of Generalized Low-Density Parity-Check Codes
IEEE Open Journal of the Communications SocietyIn this study, the gap to channel capacity of generalized low-density parity-check (GLDPC) codes under the a posteriori probability (APP) decoder on the binary input additive white Gaussian noise (BI-AWGN) channel is analyzed.
Dongxu Chang +4 more
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Entropy, 2016 Spatially coupled low-density parity-check (LDPC) codes have attracted considerable attention due to their promising performance. Recursive encoding of the codes with low delay and low complexity has been proposed in the literature but with constraints ...
Zhongwei Si, Sijie Wang, Junyang Ma
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LDPC Coded Massive MIMO Systems
Entropy, 2019 We design a coded massive multiple-input multiple-output (MIMO) system using low-density parity-check (LDPC) codes and iterative joint detection and decoding (JDD) algorithm employing a low complexity detection.
Inho Hwang +2 more
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Minimal Length, Friedmann Equations and Maximum Density [PDF]
, 2014 Inspired by Jacobson's thermodynamic approach[gr-qc/9504004], Cai et al [hep-th/0501055,hep-th/0609128] have shown the emergence of Friedmann equations from the first law of thermodynamics.
Ali, Ahmed Farag, Awad, Adel
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Anharmonic evolution of the cosmic axion density spectrum [PDF]
Physical Review D, 1994 We present analytic solutions to the spatially homogeneous axion field equation, using a model potential which strongly resembles the standard anharmonic $(1-\cos Nθ)$ potential, but contains only a piece-wise second order term. Our exactly soluble model for $θ(t)$ spans the entire range $[-π/N,π/N]$.
Strobl, K., Weiler, T. J.
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Objective To evaluate selumetinib exposure using therapeutic drug monitoring (TDM) in pediatric patients with neurofibromatosis type 1 (NF1) and plexiform neurofibromas (PN), assess interpatient pharmacokinetic variability, and explore the relationship between drug exposure, clinical response, and adverse effects.
Janka Kovács +8 more
wiley +1 more source
Monitoring storm evolution using a high-density seismic network
Scientific Reports, 2023 Data acquired by a dense seismic network deployed in the Cerdanya basin (Eastern Pyrenees) is used to track the temporal and spatial evolution of meteorological events such as rainfall episodes or thunderstorms. Comparing seismic and meteorological data,
J. Diaz +5 more
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