Results 31 to 40 of about 1,330,228 (240)

Cooperative Spectrum Sensing Algorithm Based on Double Eigenvalue Limiting Distribution

open access: yesDianxin 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

Some Bounds on Eigenvalues of the Hadamard Product and the Fan Product of Matrices

open access: yesMathematics, 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

Eigenvalue-based test statistics.

open access: yes, 2018
Eigenvalue-based test statistics.
Carolina Fortuna (5439512)   +2 more
core   +1 more source

Minimum Eigenvalue Detection for Spectrum Sensing in Cognitive Radio [PDF]

open access: yes, 2014
Spectrum sensing is a key task for cognitive radio. Our motivation is to increase the probability of detection for spectrum sensing in cognitive radio.
Ali, Syed Sajjad   +2 more
core  

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

open access: yesFEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana   +3 more
wiley   +1 more source

The Persico equation for minimum uncertainty states [PDF]

open access: yes, 2021
We present an important and forgotten result of fundamental quantum mechanics obtained in 1930 by Enrico Persico, consisting of an eigenvalue equation for minimum uncertainty ...
Vincenzo Barone, Barone, V
core   +1 more source

Digital Cognitive Phenotyping for Differential Diagnosis and Monitoring in Neurological Conditions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To assess the utility, accessibility, and equivalence to supervised scales of online cognitive assessment in older individuals with cognitive impairment. Methods Patients with Alzheimer's disease (AD, n = 31), idiopathic normal pressure hydrocephalus (iNPH, n = 26), and traumatic brain injury (TBI, n = 23) completed online cognitive ...
Martina Del Giovane   +10 more
wiley   +1 more source

Bounds and optimization of the minimum eigenvalue for a vibrating system

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
We consider the problem of the oscillation of a string fixed at one end with a mass connected to a spring at the other end. The problem of minimizing the first eigenvalue of the system subject to a fixed total mass constraint is investigated.
Don Hinton, Maeve McCarthy
doaj   +1 more source

Machine Learning Methods for Inferring the Number of UAV Emitters via Massive MIMO Receive Array

open access: yesDrones, 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

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram   +3 more
wiley   +1 more source

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