Results 21 to 30 of about 31,673 (301)
Assessing the reproducibility of a subject-specific finite element modelling pipeline for the human metastatic vertebrae. [PDF]
Sci RepComputed tomography (CT)-based subject-specific finite element (SS-FE) models offer a quantitative approach to assessing the stability of metastatic vertebrae. A critical step in developing SS-FE models is image segmentation, however automatic techniques
Roger R +7 more
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On the Compressibility of Operators in Wavelet Coordinates [PDF]
SIAM Journal on Mathematical Analysis, 2004 The paper under review contains a certain improvement of the results of \textit{A. Cohen, W. Dahmen} and \textit{R. DeVore} [Found. Comput. Math. 2, No. 3, 203--245 (2002; Zbl 1025.65056)] concerning the rate of convergence of an adaptive wavelet algorithm for solving the operator equation \(Lu=g\), with a linear boundedly invertible operator \(L:H\to ...
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Fuzzy Counterparts of Fischer Diagonal Condition in ⊤-Convergence Spaces
Mathematics, 2019 Fischer diagonal condition plays an important role in convergence space since it precisely ensures a convergence space to be a topological space. Generally, Fischer diagonal condition can be represented equivalently both by Kowalsky compression operator ...
Qiu Jin, Lingqiang Li, Jing Jiang
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CONSIDERATIONS ON THE SOURCES OF ERRORS IN EXPERIMENTAL COMPRESSION DETERMINATIONS [PDF]
Fiabilitate şi Durabilitate, 2023 The compression request of some materials sintered at ambient temperature generally presents a macrostructural quasi-homogeneity and quasi-isotropy and inhomogeneities appear due to the presence of pores in the structure.
Cristina IONICI +2 more
doaj
Morphological operators for image and video compression [PDF]
IEEE Transactions on Image Processing, 1996 This paper deals with the use of some morphological tools for image and video coding. Mathematical morphology can be considered as a shape-oriented approach to signal processing, and some of its features make it very useful for compression. Rather than describing a coding algorithm, the purpose of this paper is to describe some morphological tools that
Salembier Clairon, Philippe Jean +3 more
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Intertwining Property for Compressions of Multiplication Operators
Results in Mathematics, 2022 Following Beurling's theorem the natural compressions of the multiplication operator in the classical $L^2$ space are compressions to model spaces and to their orthogonal complements. Two possibly different model spaces are considered hence asymmetric truncated Toeplitz and asymmetric dual truncated Toeplitz operators are investigated. The main purpose
M. Cristina Câmara +3 more
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Fractal Image Compression Using Modified Operator (IFS) [PDF]
, 2013 Image data Compression based on fractal theory is fundamentally dierent from conventional compression methods, its idea is to generate a contraction operator whose fixed point approximates the original image in a complete metric space of images.
Al-Jawfi, Rashad A. +2 more
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Adaptively Compressed Exchange Operator [PDF]
Journal of Chemical Theory and Computation, 2016 The Fock exchange operator plays a central role in modern quantum chemistry. The large computational cost associated with the Fock exchange operator hinders Hartree-Fock calculations and Kohn-Sham density functional theory calculations with hybrid exchange-correlation functionals, even for systems consisting of hundreds of atoms.
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Closedness and Adjoints of Products of Operators, and Compressions [PDF]
Integral Equations and Operator Theory, 2012 The authors reprove and slightly improve theorems of \textit{M. A. Nudelman} [Integral Equations Oper. Theory 70, No.~3, 301--305 (2011; Zbl 1248.47037)] and \textit{W. Stenger} [Bull. Am. Math. Soc. 74, 369--372 (1968; Zbl 0153.45105)] about compressions of maximal dissipative and self-adjoint operators to subspaces of finite codimension and discuss ...
Azizov, T.Ya., Dijksma, A.
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Alternative iterative technique
Electronic Journal of Qualitative Theory of Differential Equations, 2019 The standard methods of applying iterative techniques do not apply when the nonlinear term is neither monotonic (corresponding to an increasing or decreasing operator) nor Lipshitz (corresponding to a condensing operator).
Richard Avery +2 more
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