Results 11 to 20 of about 55,051 (186)

On non-normality and classification of amplification mechanisms in stability and resolvent analysis [PDF]

open access: yes, 2017
We seek to quantify non-normality of the most amplified resolvent modes and predict their features based on the characteristics of the base or mean velocity profile.
Dawson, Scott T. M.   +3 more
core   +3 more sources

Fast and accurate con-eigenvalue algorithm for optimal rational approximations [PDF]

open access: yes, 2012
The need to compute small con-eigenvalues and the associated con-eigenvectors of positive-definite Cauchy matrices naturally arises when constructing rational approximations with a (near) optimally small $L^{\infty}$ error. Specifically, given a rational
Beylkin, G., Haut, T. S.
core   +1 more source

An efficient Fredholm method for calculation of highly excited states of billiards [PDF]

open access: yes, 2007
A numerically efficient Fredholm formulation of the billiard problem is presented. The standard solution in the framework of the boundary integral method in terms of a search for roots of a secular determinant is reviewed first.
Abramovitz M   +21 more
core   +2 more sources

Eigenvectors of random matrices: A survey [PDF]

open access: yes, 2016
Eigenvectors of large matrices (and graphs) play an essential role in combinatorics and theoretical computer science. The goal of this survey is to provide an up-to-date account on properties of eigenvectors when the matrix (or graph) is random.Comment ...
O'Rourke, Sean, Vu, Van, Wang, Ke
core   +3 more sources

Text Summarization [PDF]

open access: yes, 2012
With the overwhelming amount of textual information available in electronic formats on the web, there is a need for an efficient text summarizer capable of condensing large bodies of text into shorter versions while keeping the relevant information ...
Kim, Youn S.
core   +2 more sources

Analysis of the suitability for ecotourism in Beira Baixa region using a spatial decision support system based on a geographical information system

open access: yesRegional Science Policy &Practice, EarlyView., 2022
Abstract Ecotourism can contribute to the conservation of environmental values, as well as to the development of positive synergies between agents in the tourism sector, tourists and the local population. The growing interest in tourism offers with low environmental impact, which support the local economy, translates into a competitive advantage for ...
Luís Quinta‐Nova, Dora Ferreira
wiley   +1 more source

Products, coproducts and singular value decomposition

open access: yes, 2004
Products and coproducts may be recognized as morphisms in a monoidal tensor category of vector spaces. To gain invariant data of these morphisms, we can use singular value decomposition which attaches singular values, ie generalized eigenvalues, to these
B. Fauser   +13 more
core   +2 more sources

Online Parameter Identification for Equivalent Circuit Model of Li-Ion Batteries Using the Eigenvalue Addition/Deletion Least-Squares Method With a Forgetting Factor

open access: yesIEEE Access
It is necessary to identify the parameters for an equivalent circuit model of Li-ion batteries and understand their degradation conditions in electric vehicles and consumer electronic devices.
Takeshi Inoue, Daiki Komatsu
doaj   +1 more source

Non-Abelian Discrete Groups from the Breaking of Continuous Flavor Symmetries

open access: yes, 2009
We discuss the possibility of obtaining a non-abelian discrete flavor symmetry from an underlying continuous, possibly gauged, flavor symmetry SU(2) or SU(3) through spontaneous symmetry breaking.
Adulpravitchai, A.   +2 more
core   +1 more source

Geometry of effective Hamiltonians

open access: yes, 2008
We give a complete geometrical description of the effective Hamiltonians common in nuclear shell model calculations. By recasting the theory in a manifestly geometric form, we reinterpret and clarify several points.
A. Messiah   +4 more
core   +1 more source

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