Results 41 to 50 of about 242,274 (310)
Inflation with a graceful exit in a random landscape [PDF]
, 2016 We develop a stochastic description of small-field inflationary histories with a graceful exit in a random potential whose Hessian is a Gaussian random matrix as a model of the unstructured part of the string landscape.
Pedro, Francisco G., Westphal, Alexander
core +3 more sources
Some Bounds on Eigenvalues of the Hadamard Product and the Fan Product of Matrices
Mathematics, 2019 In this paper, an upper bound on the spectral radius ρ ( A ∘ B ) for the Hadamard product of two nonnegative matrices (A and B) and the minimum eigenvalue τ ( C ★ D ) of the Fan product of two M-matrices (C and D) are researched.
Qianping Guo +3 more
doaj +1 more source
The decay of Hopf solitons in the Skyrme model [PDF]
, 2016 It is understood that the Skyrme model has a topologically interesting baryonic excitation which can model nuclei. So far no stable knotted solutions, of the Skyrme model, have been found. Here we investigate the dynamics of Hopf solitons decaying to the
Foster, David
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Cooperative Spectrum Sensing Algorithm Based on Double Eigenvalue Limiting Distribution
Dianxin kexue, 2014 A spectrum sensing algorithm using double eigenvalue limiting（DEL）distributions was presented. The difference between the maximum and the minimum eigenvalue was exploited as the test statistic.
Zhijin zhao, Weikang Hu, Haiquan Wang
doaj +2 more sources
Precise asymptotics of small eigenvalues of reversible diffusions in the metastable regime [PDF]
, 2005 We investigate the close connection between metastability of the reversible diffusion process X defined by the stochastic differential equation dX_t=-\nabla F(X_t) dt+\sqrt2\epsilon dW_t,\qquad \epsilon >0, and the spectrum near zero of its generator -L_{
Eckhoff, Michael
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Machine Learning Methods for Inferring the Number of UAV Emitters via Massive MIMO Receive Array
Drones, 2023 To provide important prior knowledge for the direction of arrival (DOA) estimation of UAV emitters in future wireless networks, we present a complete DOA preprocessing system for inferring the number of emitters via a massive multiple-input multiple ...
Yifan Li +8 more
doaj +1 more source
On the second minimizing graph in the set of complements of trees
AKCE International Journal of Graphs and Combinatorics, 2019 Let G be a graph of order n and A(G)=[ai,j]be its adjacency matrix such that ai,j=1 if viis adjacent to vjand ai,j=0 otherwise, where 1≤i,j≤n. In a certain family of graphs, a graph is called minimizing (or second minimizing) if the least eigenvalue of ...
M. Javaid
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International Journal of Adaptive Control and Signal Processing, EarlyView.Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez +2 more
wiley +1 more source
Strongly Regular Graphs as Laplacian Extremal Graphs [PDF]
, 2014 The Laplacian spread of a graph is the difference between the largest eigenvalue and the second-smallest eigenvalue of the Laplacian matrix of the graph.
Lin, Fan-Hsuan, Weng, Chih-wen
core
Advanced Engineering Materials, EarlyView.What happens when 32 labs join forces to study nanoparticle‐modified powders? A data‐driven journey through laser powder bed fusion—now openly accessible for the entire additive manufacturing community—is studied. Laser powder bed fusion is a cornerstone technology for additive manufacturing (AM) of metals and polymers, yet challenges in achieving ...
Ihsan Murat Kuşoğlu +73 more
wiley +1 more source