Results 1 to 10 of about 10,868,924 (291)
Bayesian Inference of Phylogenetic Distances: Revisiting the Eigenvalue Approach. [PDF]
Bull Math BiolAbstract Using genetic data to infer evolutionary distances between molecular sequence pairs based on a Markov substitution model is a common procedure in phylogenetics, in particular for selecting a good starting tree to improve upon.
Penn MJ +4 more
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A Bootstrap Approach to Eigenvalue Correction [PDF]
2009 Ninth IEEE International Conference on Data Mining, 2009 Eigenvalue analysis is an important aspect in many data modeling methods. Unfortunately, the eigenvalues of the sample covariance matrix (sample eigenvalues) are biased estimates of the eigenvalues of the covariance matrix of the data generating process (population eigenvalues).
Anne Hendrikse +2 more
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An Alternative Approach to Energy Eigenvalue Problems of Anharmonic Potentials [PDF]
Advances in Mathematical Physics, 2014 Energy eigenvalues of quartic and sextic type anharmonic potentials are obtained by using an alternative method called asymptotic Taylor expansion method (ATEM) which is an approximate approach based on the asymptotic Taylor series expansion of a ...
Okan Ozer, Halide Koklu
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Mathematics, 2022 In this paper, the problem of an unbonded material under variable thermal conductivity with and without Kirchhoff’s transformations is investigated. The context of the problem is the generalized thermoelasticity model. The boundary plane of the medium is
Aatef Hobiny, Ibrahim Abbas
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Effects of the Nonlocal Thermoelastic Model in a Thermoelastic Nanoscale Material
Mathematics, 2022 In this work, a novel nonlocal model without energy dissipations is presented to investigate the impacts of the nonlocal thermoelastic parameters in a nanoscale material by the eigenvalue approach.
Tareq Saeed, Ibrahim Abbas
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Generalized Thermoelastic Interaction in a Half-Space under a Nonlocal Thermoelastic Model
Mathematics, 2022 In the current article, the nonlocal thermoelastic theory is used to discuss the wave propagation in unbounded thermoelastic materials. Due to the inclusion of relaxation time in thermal conduction formulation and the equations of motion, this model was ...
Ibrahim Abbas +3 more
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Stability Assessment Approach Based on Trajectory Section Eigenvalue [PDF]
E3S Web of Conferences, 2021 Eigenvalue Method can analyze the operating features of the system. The trajectory section eigenvalue method combines the model and trajectory, and extends the equilibrium point eigenvalue to the unbalanced point of the cross section at any time on the ...
Ruan Jiacheng, Zhang Hengxu, Cao Yongji
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MAS: a versatile Landau-fluid eigenvalue code for plasma stability analysis in general geometry
Nuclear Fusion, 2023 We have developed a new global eigenvalue code, multiscale analysis for plasma stabilities (MAS), for studying plasma problems with wave toroidal mode number ( n ) and frequency ( ω ) in a broad range of interest in general tokamak geometry, based on a ...
J. Bao +10 more
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Controllability of linear impulsive systems -- an eigenvalue approach [PDF]
Kybernetika, 2020 In this paper the authors consider the class of dynamical control system modelled by the following \(n\)-dimensional linear impulsive ordinary differential equation \[ \begin{cases} \dot{\mathbf x}(t) &= \mathbf{A}(t) \mathbf{x}(t)+\mathbf{B}(t) \mathbf{u}(t),\quad t\in [t_0,\infty)\setminus\{t_k:k=1,2,3,\dots\},\\ \mathbf{x}(t_0) &= \mathbf{x}_0 ...
Vijayakumar S. Muni, Raju K. George
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Subspace Speech Enhancement Algorithm Based on Eigenvalue Substitution [PDF]
Jisuanji gongcheng, 2016 A subspace speech enhancement approach is proposed for a better reconstructed speech quality.On the basis of Generalized Eigenvalue Decomposition(GEVD) subspace approach for speech enhancement,speech quality is improved by eigenvalue substitution.The ...
SUN Chengli,MU Junsheng
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