Results 11 to 20 of about 22,098 (307)
Physical Review Physics Education ResearchThis study investigated how students reason about the partial derivative and the directional derivative of a multivariable function at a given point, using different graphical representations for the function in the problem statement.
Maria Al Dehaybes +3 more
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Directional Derivatives of Oblique Reflection Maps [PDF]
Mathematics of Operations Research, 2010 Given an oblique reflection map Γ and functions [Formula: see text] (the space of ℝK-valued functions that have finite left and right limits at every point), the directional derivative [Formula: see text] of Γ along χ, evaluated at ψ, is defined to be the pointwise limit, as [Formula: see text], of the family of functions [Formula: see text ...
Avi Mandelbaum, Kavita Ramanan
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On Characterizations of Directional Derivatives and Subdifferentials of Fuzzy Functions [PDF]
Symmetry, 2017 In this paper, based on a partial order, we study the characterizations of directional derivatives and the subdifferential of fuzzy function. At the same time, we also discuss the relation between the directional derivative and the subdifferential.
Wei Zhang, Yumei Xing, Dong Qiu
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Remote SensingDetecting small targets in infrared search and track (IRST) systems in complex backgrounds poses a significant challenge. This study introduces a novel detection framework that integrates directional derivative correlation filtering (DDCF) with a local ...
Feng Xie +4 more
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Corner Detection Using Second-Order Generalized Gaussian Directional Derivative Representations
, 2021 Corner detection is a critical component of many image analysis and image understanding tasks, such as object recognition and image matching. Our research indicates that existing corner detection algorithms cannot properly depict the difference between ...
Sun, Changming, Zhang, Weichuan
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Review of Shearography for Dual-Directional Measurement
Optics, 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
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Directed Distances with Derivatives
Journal 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.
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Karpatsʹkì Matematičnì Publìkacìï, 2019 We partially reinforce some criteria of $L$-index boundedness in direction for functions analytic in the unit ball. These results describe local behavior of directional derivatives on the circle, estimates of maximum modulus, minimum modulus of analytic ...
A.I. Bandura
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Maximal monotone operators with non-maximal graphical limit
Examples and Counterexamples, 2022 We present a counterexample showing that the graphical limit of maximally monotone operators might not be maximally monotone. We also characterize the directional differentiability of the resolvent of an operator B in terms of existence and maximal ...
Gerd Wachsmuth
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The Derivation of Direction Selectivity in the Striate Cortex [PDF]
The Journal of Neuroscience, 2004 In the central visual pathway of binocular animals, the property of directional selectivity (DS) is first exhibited in striate cortex. In this study, we sought to determine the neural circuitry underlying the transformation from non-DS neurons to DS cortical cells.
Matthew R, Peterson +2 more
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