Results 101 to 110 of about 448,247 (335)
American Journal of Botany, EarlyView.Abstract Premise Budding speciation occurs when peripheral populations adapt to local ecological conditions and “bud” off from a widespread progenitor species. Traditionally regarded as rare because of its sympatric and parapatric nature, budding speciation is largely understudied.
Eli J. Allen +3 more
wiley +1 more source
A Reliable Method for Solving Fractional Sturm–Liouville Problems
Mathematics, 2018 In this paper, a reliable method for solving fractional Sturm–Liouville problem based on the operational matrix method is presented. Some of our numerical examples are presented.
M. M. Khashshan +2 more
doaj +1 more source
On the Multiplicative Inverse Eigenvalue Problem [PDF]
, 1972 By "multiplicative inverse eigenvalue problem" (m.i.e.p., for short) we mean the following. Let A be an n×n matrix and let s1,…, sn be n given numbers. Under what conditions does there exist an n×n diagonal matrix V such that VA has eigenvalues s1,…,sn ...
G. N. De Oliveira
core +1 more source
Australian Journal of Social Issues, EarlyView.ABSTRACT The rapid increase in older people in prison populations worldwide is generating significant health, cost, and human rights pressures on custodial systems. Compassionate release for older, frail inmates is a potentially effective response, yet little is known about public support for this approach.
Ye In (Jane) Hwang +3 more
wiley +1 more source
Humans and platyrrhines share a pattern of articular variance
The Anatomical Record, EarlyView.Abstract Previous work has identified a pattern of articular shape variation in modern human limb joints, in which convex joint surfaces exhibit constrained variance relative to their more variable concave conarticulars. This pattern is notable given that joint morphogenesis is influenced by local biomechanical environments, which vary substantially ...
Haley Horbaly, Liam Zachary
wiley +1 more source
ZjuMatrix: C++ vector and matrix class library for finite element method
SoftwareXFinite element analysis is an indispensable and valuable tool widely used in the field of science and technology. It involves a multitude of matrix operations, storage of large banded matrices, and calculation of large-scale algebraic equations and ...
Shicheng Zheng, Rongqiao Xu
doaj +1 more source
Advances in Mechanical Engineering, 2016 A new formulation for the non-dimensional dynamic influence function method, which was developed by the authors, is proposed to efficiently extract eigenvalues and mode shapes of clamped plates with arbitrary shapes.
Sang-Wook Kang, Satya N Atluri
doaj +1 more source
Some inequalities for generalized eigenvalues of perturbation problems on Hermitian matrices
Journal of Inequalities and Applications, 2018 In the paper, the authors establish some inequalities for generalized eigenvalues of perturbation problems on Hermitian matrices and modify shortcomings of some known inequalities for generalized eigenvalues in the related literature.
Yan Hong, Dongkyu Lim, Feng Qi
doaj +1 more source
An Inverse Eigenvalue Problem for Positive Definite Arrow Matrix [PDF]
, 2010 In this paper, a class of inverse eigenvalue problem is proposed for real symmetric positive definite Arrow matrices. Necessary and sufficient conditions for the existence of a unique solution of this problem, as well as the analytic formula of this ...
Xu, BY +5 more
core
On the complex least squares problem with constrained phase [PDF]
, 2011 The problem of solving approximately in the least squares sense an overdetermined linear system of equations with complex valued coefficients is considered, where the elements of the solution vector are constrained to have the same phase.
Markovsky, Ivan, Ivan Markovsky
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