Results 81 to 90 of about 9,977,087 (284)
On the spectral distribution of kinetic energy in large-scale atmospheric flow [PDF]
Nonlinear Processes in Geophysics, 1998 A one-dimensional form of the equation of motion with forcing and dissipation is formulated in the spectral domain and used to make long term integrations from which the spectral distribution of the kinetic energy is determined The forcing in the wave ...
A. Wiin-Nielsen
doaj
On the power domination number of the Cartesian product of graphs
AKCE International Journal of Graphs and Combinatorics, 2019 We give a brief survey about the existing results on the power domination of the Cartesian product of graphs, and improve two of the results by determining the exact power domination numbers of two families of graphs, namely, the cylinder Pn□Cmand the ...
K.M. Koh, K.W. Soh
doaj +1 more source
PERFORMANCE ANALYSIS AND EVALUATION OF MASSIVE MIMO SYSTEM
Applied Computer Science, 2020 This article examines the performance of massive MIMO uplink system over Rician fading channel. The performance is estimated regarding spectral efficiency versus number of base station antennas utilizing three plans of linear detection, maximum-ratio ...
Muaayed F. AL-RAWI +2 more
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Zero Forcing Number of Some Families of Graphs
Mohyla Mathematical Journal, 2021 The work is devoted to the study of the zero forcing number of some families of graphs. The concept of zero forcing is a relatively new research topic in discrete mathematics, which already has some practical applications, in particular, is used in studies of the minimum rank of the matrices of adjacent graphs. The zero forcing process is an example of
openaire +3 more sources
Minimum rank, maximum nullity, and zero forcing number of simple digraphs [PDF]
, 2013 A simple digraph describes the off-diagonal zero-nonzero pattern of a family of (not necessarily symmetric) matrices. Minimum rank of a simple digraph is the minimum rank of this family of matrices; maximum nullity is defined analogously.
Berliner, Adam +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Asymptotic RZF cooperative beamforming algorithm based on energy efficiency
Tongxin xuebao, 2019 A low complexity asymptotic regularized zero forcing cooperative beamforming algorithm based on energy efficiency in heterogeneous massive MIMO system was proposed,aiming at the problem that the current multi-flow regularization zero forcing beamforming ...
Yinghui ZHANG +3 more
doaj +2 more sources
On the -forcing number: computational approach and exact values
Journal of Physics: ComplexityZero forcing is a graph coloring process that is used to model spreading phenomena in real-world scenarios. It can also be viewed as a single-player combinatorial game on a graph, where the player’s goal is to select a subset of vertices of minimum ...
Aida Abiad, Maryam Moghaddas
doaj +1 more source
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
A Hybrid Approach to Spatial Multiplexing in Multiuser MIMO Downlinks
EURASIP Journal on Wireless Communications and Networking, 2004 In the downlink of a multiuser multiple-input multiple-output (MIMO) communication system, simultaneous transmission to several users requires joint optimization of the transmitted signals. Allowing all users to have multiple antennas adds an additional
Spencer Quentin H., Swindlehurst A. Lee
doaj +2 more sources