Results 41 to 50 of about 60,050 (165)

Study on the Effects of Inflow Conditions on the Inlet Performance of a Dorsal S-Shaped Inlet

open access: yesAerospace
As an important aerodynamic configuration of the new-generation UAV, the dorsal S-shaped inlet’s performance is affected by the complex coupling of inflow conditions and the boundary layer ingestion effect.
Meng Cao   +8 more
doaj   +1 more source

Received Power Attenuation Analysis Based on Wavelet for Reflection-Style Optical Antenna Deformations in Free-Space Laser Communications

open access: yesInternational Journal of Antennas and Propagation, 2011
Diversified deformations on reflection-style optical antennas caused by processing technique and complex outer-space environment in free-space laser communications are modeled by wavelet analysis.
Wanqing Xie   +3 more
doaj   +1 more source

Correlation Coefficients: Mean Bias and Confidence Interval Distortions

open access: yesJournal of Methods and Measurement in the Social Sciences, 2011
Non-zero correlation coefficients have non-normal distributions, affecting both means and standard deviations. Previous research suggests that z transformation may effectively correct mean bias for N's less than 30. In this study, simulations with small (20 and 30) and large (50 and 100) N's found that mean bias adjustments for larger N's are seldom ...
Richard L. Gorsuch, Curtis S. Lehmann
openaire   +3 more sources

Quality assessment of synthetic viewpoint stereo image with multi-feature fusion

open access: yesDianxin kexue, 2019
A multi-feature fusion method was proposed,the features of the distortion areas,the distortion edges and the singular value were fused.Firstly,the distortion areas corresponding to the human eyes were obtained by using the parallax and the threshold,and ...
Shuainan CUI   +4 more
doaj   +2 more sources

A Novel Subclass of Harmonic Functions: Coefficient Bounds, Distortion Bounds, and Closure Properties

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi
In this paper, we introduce a new subclass of harmonic functions that significantly improves our understanding of these functions in geometric function theory. We provide a comprehensive analysis of this subclass by deriving several important properties,
Serkan Çakmak
doaj   +1 more source

Certain Family of Multivalent Functions Associated With Subordination

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2020
The main objectives of this pepper are to introduce new classes. We have attempted to obtain coefficient estimates, radius of convexity, Distortion and  Growth theorem and other related results for the ...
Zainab H. Mahmood   +2 more
doaj   +1 more source

Coefficient bounds and distortion theorems for the certain analytic functions

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2019
Summary: In this paper, we introduce and investigate an analytic function class \(P_{q}(\lambda,A,B)\) that we call the class of \(q\)-starlike and \(q\)-convex functions with respect to the parameter \(\lambda \). We give coefficient bounds estimates, distortion bound and growth theorems for the functions belonging to this class.
Altintaş, Osman, Mustafa, Nizami
openaire   +2 more sources

Adaptive JPEG steganography based on distortion cost updating

open access: yesTongxin xuebao, 2017
Previous adaptive JPEG steganography algorithms mostly calculate image distortion before secret information embedding,so they can’t dynamically adjust distortion costs.Considering the mutual impacts during embedding,an adaptive JPEG steganography ...
Guang-ming TANG   +3 more
doaj   +2 more sources

Prestarlike functions with negative coefficients

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
The extreme points for prestarlike functions having negative coefficients are determined. Coefficient, distortion and radii of univalence, starlikeness, and convexity theorems are also obtained.
H. Silverman, E. M. Silvia
doaj   +1 more source

Experimental Research on the Correction of Vortex Light Wavefront Distortion

open access: yesPhotonics
Wavefront distortion occurs when vortex beams are transmitted in the atmosphere. The turbulence effect greatly affects the transmission of information, so it is necessary to use adaptive optical correction technology to correct the wavefront distortion ...
Yahang Ge, Xizheng Ke
doaj   +1 more source

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