Results 131 to 140 of about 36,403 (314)
Metamer Mismatching Predicts Color Difference Ellipsoids
Color Research &Application, EarlyView.ABSTRACT It is well known that color‐discrimination thresholds vary throughout color space, as is easily observed from the familiar MacAdam ellipses plotted in chromaticity space. But why is this the case? Existing formulations of uniform color spaces (e.g., CIELAB, CIECAM02, CAM16‐UCS) and their associated color‐difference DE metrics are all models ...
Emitis Roshan, Brian Funt
wiley +1 more source
New fractional cosine transform and its application
Tongxin xuebao, 2005 A new Fractional Cosine Transform was proposed. It was a weighted combination of the first two integer-order cosine transforms of the original signal, and it has the same eigenvectors as the cosine transform’s, but the different eigenvalues which have a ...
ZHANG Yong-liang, ZENG Yi-cheng
doaj
Galerkin Eigenvector Approximations [PDF]
arXiv, 1998 How close are Galerkin eigenvectors to the best approximation available out of the trial subspace ? Under a variety of conditions the Galerkin method gives an approximate eigenvector that approaches asymptotically the projection of the exact eigenvector onto the trial subspace -- and this occurs more rapidly than the underlying rate of convergence of ...
arxiv
On the Coding of Jacobi's Method for Computing Eigenvalues and Eigenvectors of Real Symmetric Matrices [PDF]
, 1963 F. J. Corbató
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Analysis of density matrix embedding theory around the non‐interacting limit
Communications on Pure and Applied Mathematics, EarlyView.Abstract This article provides the first mathematical analysis of the Density Matrix Embedding Theory (DMET) method. We prove that, under certain assumptions, (i) the exact ground‐state density matrix is a fixed‐point of the DMET map for non‐interacting systems, (ii) there exists a unique physical solution in the weakly‐interacting regime, and (iii ...
Eric Cancès +4 more
wiley +1 more source
New approach for 2-D spectrum estimation——parameter weight method
Tongxin xuebao, 2006 A new approach of 2-D MUSIC algorithm was proposed.Using the eigenvector and the eigenvalue of the co-variance matrix simultaneously,the method was composed of two one-dimension searching and avoided the costly 2-D searching.The pairings of the estimated
BAO Zheng1, WANG Yong-liang2
doaj
Eigenvector Expansions of Green's Dyads with Applications to Geophysical Theory [PDF]
, 1968 Ari Ben‐Menahem, Sarva Jit Singh
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The eigenvectors of a combinatorial matrix
Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2011 In this paper, we derive the eigenvectors of a combinatorial matrix whose eigenvalues studied by Kilic and Stanica. We follow the method of Cooper and Melham since they considered the special case of this matrix.
openaire +2 more sources
ChemSusChem, Accepted Article.The parasitic hydrogen evolution reaction (HER) hinders electrolyte transport. It reduces the effective electrochemical surface area in the negative half‐cell of vanadium redox flow batteries (VRFBs), resulting in substantial efficiency losses. We investigated the formation and evolution of hydrogen bubbles within VRFB electrodes through comprehensive ...
Kangjun Duan +10 more
wiley +1 more source
Electrical Conductivities and Low Frequency Opacities in the Warm Dense Matter Regime
Contributions to Plasma Physics, EarlyView.ABSTRACT In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average‐atom approximation and of different models for calculating opacities, such as the Ziman or Ziman–Evans models is discussed and the results compared to ab initio simulations.
Mikael Tacu +3 more
wiley +1 more source