Results 1 to 10 of about 19,944 (168)

Characterizations of Stability of Error Bounds for Convex Inequality Constraint Systems

open access: yesOpen Journal of Mathematical Optimization, 2022
In this paper, we mainly study error bounds for a single convex inequality and semi-infinite convex constraint systems, and give characterizations of stability of error bounds via directional derivatives. For a single convex inequality, it is proved that
Wei, Zhou, Théra, Michel, Yao, Jen-Chih
doaj   +1 more source

Mixed and directional derivatives [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
Let \(B\) be the space \(L_ p(D)\) \((1\leq ...
Chen, W., Ditzian, Z.
openaire   +2 more sources

Numerical estimation of aircrafts' unsteady lateral-directional stability derivatives [PDF]

open access: yesTheoretical and Applied Mechanics, 2006
A technique for predicting steady and oscillatory aerodynamic loads on general configuration has been developed. The prediction is based on the Doublet-Lattice Method, Slender Body Theory and Method of Images.
Maričić N.L.
doaj   +1 more source

Direct Synthesis of Pyridine Derivatives [PDF]

open access: yesJournal of the American Chemical Society, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mohammad, Movassaghi   +2 more
openaire   +2 more sources

A Vector Operation to Extract Second-Order Terrain Derivatives from Digital Elevation Models

open access: yesRemote Sensing, 2020
Terrain derivatives exhibit surface morphology in various aspects. However, existing spatial change calculation methods for terrain derivatives are based on a mathematical scalar operating system, which may disregard the directional property of the ...
Guanghui Hu   +4 more
doaj   +1 more source

Multiscale Anisotropic Morphological Directional Derivatives for Noise-Robust Image Edge Detection

open access: yesIEEE Access, 2022
Different types of noise interference lead to low accuracy of image edge detection and severe loss of feature extraction details. A new noise-robust edge detection method is proposed, which uses a set of multiscale anisotropic morphological directional ...
Xiaohang Yu   +4 more
doaj   +1 more source

Effect of Airplane Tail Aspect Ratio on Lateral- Directional Stability [PDF]

open access: yesEngineering and Technology Journal, 2007
For lateral-directional stability analysis, the horizontal tail geometricparameters effect has not been considered. In the present work, the effect ofhorizontal tail aspect ratio on the lateral-directional stability derivatives,rolling static, lateral ...
A.R. Mohammed
doaj   +1 more source

Constructing a subgradient from directional derivatives for functions of two variables [PDF]

open access: yesJournal of Nonsmooth Analysis and Optimization, 2020
For any scalar-valued bivariate function that is locally Lipschitz continuous and directionally differentiable, it is shown that a subgradient may always be constructed from the function's directional derivatives in the four compass directions, arranged ...
Kamil A. Khan, Yingwei Yuan
doaj   +1 more source

Directed Distances with Derivatives

open access: yesJournal of Mathematical Analysis and Applications, 1994
The authors discuss minimum distance approaches for the reconstruction of real functions from a finite number of linear functions. They extend the theory to the case in which the distance may depend on derivatives of the functions in question. Thus they generalize for instance results of \textit{L. Jones} and \textit{C. Byrne} [IEEE Trans. Inf.
Gonzalezvelasco, E., Grahameagle, J.
openaire   +2 more sources

Review of Shearography for Dual-Directional Measurement

open access: yesOptics, 2022
Shearography is a coherent optical technique that allows the identification of the first derivative of deformation in the shearing direction. Due to direct measuring strain information, shearography is suited for non-destructive testing and evaluation ...
Bicheng Guo   +6 more
doaj   +1 more source

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