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Especially when nonlinear problems involving large deformation are considered, low-density finite elements cause serious numerical problems as their tangent stiffness matrices lose positive definiteness.
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Moreover, we show that strain-induced instabilities can be detected as negative phase velocity increments before the stiffness matrix loses its positive definiteness.
Before the onset of the numerical instabilities, the conformation tensor is always observed to lose its positive-definiteness.
PC superplasticizer loses its positive effect where NP is added and becomes more effective with LP and BSF.
"Social engineering" has lost its positive connotations and is now mostly used pejoratively.
When he fights, he's lost his positive message.
The active-matrix screen loses some clarity when viewed from odd angles but looks fine head-on.
As a result of cartilage damage, key components of the extracellular matrix are lost.
The topics and application include Information Geometry, Differential Geometry of structured Matrix, Positive Definite Matrix, Covariance Matrix, Sensors (Electromagnetic Fields, Acoustic sensors) and Applications in Cognitive systems, in particular Data Mining.
Xenografts do have tumor-host interactions, but can lose matrix as well after several passages.
(a)For and, the matrix is a positive semidefinite matrix.
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