Results 111 to 120 of about 128,344 (265)

Pattern Classification Using Secondary Components Perceptron and Economic Applications [PDF]

open access: yes
In this paper we will classify patterns using a modified Perceptron algorithm (Dumitrache et al., 1999). The generalization uses the eigenvalues and the eigenvectors of the sample covariance matrix, as we did for classifying patterns using PCR (Ciuiu ...
Ciuiu, Daniel
core  

EIGENVALUES OF SYMMETRIC MATRICES [PDF]

open access: yes, 2017
This project is concerned with the solution of eigenvalues of symmetric Matrices. The basic concept are defined, the using of eigenvalues and their properties with simple examples are explained numerically.
Fatima Mohammed Ahmed Alemam
core  

Eigenvalue counting estimates for a class of linear spectral pencils with applications to zero modes [PDF]

open access: yes, 2012
Consider a linear spectral pencil of the form P(−i∇)− zQ(x), z ∈ C. If P−1 ∈ weak-Lp and Q ∈ Lp for some 1 < p
Elton, Daniel, Ta, Tri Ngoc
core  

Eigenvalues.

open access: yes, 2019
WLSMV EFA eigenvalues for the parent or teacher SDQ (Spanish language version) with half of the Honduran parent or other caregiver respondents (n = 484).
Melissa L. Harry (6524348)   +2 more
core   +1 more source

Emergent Spin Hall Quantization and High‐Order van Hove singularities in Square‐Octagonal MA2Z4

open access: yesAdvanced Physics Research, EarlyView.
Square‐octagonal MA2Z4 (M = Mo/W, A = Si/Ge, Z = pnictogen) monolayers are predicted to realize quantum spin Hall insulators with nearly quantized spin Hall conductivity enabled by an emergent spin U(1) quasi‐symmetry. Materials with Z = As and Sb host quasi‐flat bands with high‐order van Hove singularities near the Fermi level, making them promising ...
Rahul Verma   +3 more
wiley   +1 more source

On the Eigenvalues of a Graph

open access: yesElectronic Notes in Discrete Mathematics, 2003
Hanumappa B. Walikar   +1 more
openaire   +1 more source

Viewing the Steklov Eigenvalues of the Laplace Operator as Critical Neumann Eigenvalues

open access: yes, 2015
We consider the Steklov eigenvalues of the Laplace operator as limiting Neumann eigenvalues in a problem of boundary mass concentration. We discuss the asymptotic behavior of the Neumann eigenvalues in a ball and we deduce that the Steklov eigenvalues ...
PROVENZANO, LUIGI   +3 more
core   +1 more source

Moiré Folded Helical States at the Interfaces of Heterostructures

open access: yesAdvanced Physics Research, EarlyView.
This manuscript explores a minimal ladder model of a graphene‐topological‐insulator heterostructure where moiré superlattices modulate Rashba spin‐orbit coupling. The study reveals that SOC lifs spin degeneracy, halves spectral periodicity, and induces “helicity fragmentation” across moiré minibands.
Paula Mellado
wiley   +1 more source

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

open access: yesAdvanced Physics Research, EarlyView.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra   +5 more
wiley   +1 more source

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

open access: yesThe Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli   +6 more
wiley   +1 more source

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