Results 11 to 20 of about 31,673 (301)

Sinc-Fractional Operator on Shannon Wavelet Space [PDF]

open access: yesFrontiers in Physics, 2018
In this paper the sinc-fractional derivative is extended to the Hilbert space based on Shannon wavelets. Some new fractional operators based on wavelets are defined.
Carlo Cattani
core   +3 more sources

Partition of the Spectra for the Generalized Difference Operator B(r,s) on the Sequence Space cs

open access: yesCumhuriyet Science Journal, 2018
The goal of this study gives the approximatepoint spectrum, the defect spectrum and the compression spectrum of generalizeddifference operator B (r, s) over the class ofconvergent ...
Rabia Kılıç   +2 more
core   +2 more sources

COMPRESSION OF HIGH DYNAMIC RANGE OF SAR IMAGES

open access: yesСистемный анализ и прикладная информатика, 2018
The paper presents results of our experiments on compression of the high dynamic range SAR images. The range is equal to 16-bit. Objectives of study were comparison of known approaches to compression of the high dynamic range images; selection of optimal
Yu. I. Golub
core   +2 more sources

Quantitative Evaluation of Pectoral Muscle Visualisation as an Indicator of Positioning Quality in Screening Mammography. [PDF]

open access: yesDiagnostics (Basel)
Background/Objectives: Image quality of mammograms in breast cancer screening is strongly operator-dependent, particularly in the mediolateral oblique (MLO) projection where adequate visualisation of the pectoralis major muscle serves as a surrogate ...
Karić M   +2 more
europepmc   +2 more sources

Spectral resolutions in effect algebras [PDF]

open access: yesQuantum, 2022
Effect algebras were introduced as an abstract algebraic model for Hilbert space effects representing quantum mechanical measurements. We study additional structures on an effect algebra $E$ that enable us to define spectrality and spectral resolutions ...
Anna Jenčová, Sylvia Pulmannová
doaj   +1 more source

Dilatations of Linear Operators

open access: yesСовременная математика: Фундаментальные направления, 2020
The article is devoted to building various dilatations of linear operators. The explicit construction of a unitary dilation of a compression operator is considered.
Yu. L. Kudryashov
doaj   +1 more source

TONE COMPRESSION ALGORITHM FOR HIGH DYNAMIC RANGE MEDICAL IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
We propose here an HDR compression method for medical images based on a windowing operator, an adaptive tone mapping operator, and the probabilistic normal-gamma model.
I. A. Gracheva, A. V. Kopylov
doaj   +1 more source

Extremal compressions of closed operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1992
Let X X be a Banach space, A
Förster, K.-H., Jahn, K.
openaire   +1 more source

Lateral Abdominal Muscles Shear Modulus and Thickness Measurements under Controlled Ultrasound Probe Compression by External Force Sensor: A Comparison and Reliability Study

open access: yesSensors, 2021
The aim of this study was to perform a reliability and agreement analysis and to compare lateral abdominal muscles (LAMs) thickness and elasticity results obtained by an experienced operator, by a non-experienced operator, and in an ultrasound imaging ...
Grzegorz Mikołajowski   +3 more
doaj   +1 more source

Multifunctional Complex of Thermomechanical Calibration by Screw Compression [PDF]

open access: yesMATEC Web of Conferences, 2021
In the present paper, a soft-hardware system is considered intended for controlling the complex for high-temperature thermomechanical calibration by screw compression. The functional capabilities and block diagram of the complex are presented.
Balobanov Nikita   +4 more
doaj   +1 more source

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