Results 51 to 60 of about 7,093 (264)

Effect of zooming on texture features of ultrasonic images

open access: yesCardiovascular Ultrasound, 2006
Background Unstable carotid plaques on subjective, visual, assessment using B-mode ultrasound scanning appear as echolucent and heterogeneous. Although previous studies on computer assisted plaque characterisation have standardised B-mode images for ...
Kyriacou Efthyvoulos   +4 more
doaj   +1 more source

An Iterative Algorithm for Predicting Seafloor Topography from Gravity Anomalies

open access: yesRemote Sensing, 2023
As high-resolution global coverage cannot easily be achieved by direct bathymetry, the use of gravity data is an alternative method to predict seafloor topography.
Jinhai Yu   +5 more
doaj   +1 more source

Hierarchical Complementary Enhanced Autoencoder Integrating Spatio‐Temporal Interaction Feature for Soft Sensor

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To address the issues of neglecting the spatiotemporal correlations among process variables, low‐level features are vulnerable to noise interference, and the gradual loss of key information layer by layer during deep network training in traditional stacked autoencoder‐based soft‐sensor models, this paper proposes a hierarchical complementary ...
Xiaoping Guo, Jinghong Guo, Yuan Li
wiley   +1 more source

On the relative merits of interpolation schemes for the immersed boundary method: a case study with the heat equation

open access: yesTrends in Computational and Applied Mathematics
In this work, three implementation options for the ghost cell immersed boundary method are compared. These options are alternatives to a rather common implementation of the method that is susceptible to numerical instability in the calculation of the
Willian Carlos Lesinhovski   +3 more
doaj   +1 more source

Bilinear interpolation theorems and applications

open access: yesJournal of Functional Analysis, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Numerical function generators using bilinear interpolation

open access: yes2008 International Conference on Field Programmable Logic and Applications, 2008
Two-variable numerical functions are widely used in various applications, such as computer graphics and digital signal processing. Fast and compact hardware implementations are required. This paper introduces the bilinear interpolation method to produce fast and compact numerical function generators (NFGs) for two-variable functions.
Nagayama, Shinobu   +2 more
openaire   +2 more sources

Bilinear interpolation of program control in approach problem

open access: yesUfa Mathematical Journal, 2023
Summary: We consider a controlled system involving a constant two-dimensional vector parameter, the approximate value of which is reported to the controlling person only at the moment of the start of movement. A priori only the set of possible values of these unknown parameter is given.
openaire   +3 more sources

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

open access: yesAdvanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Super Resolution Reconstruction of Images Based on Interpolation and Full Convolutional Neural Network and Application in Medical Fields

open access: yesIEEE Access, 2019
The traditional image to enlarge algorithms include nearest neighbor interpolation, bilinear interpolation and high-order interpolation. In order to achieve super-resolution reconstruction of images, a new algorithm combining traditional algorithms and ...
Na Sun, Huina Li
doaj   +1 more source

Parameter Uniform Numerical Method for Singularly Perturbed 2D Parabolic PDE with Shift in Space

open access: yesMathematics, 2022
Singularly perturbed 2D parabolic delay differential equations with the discontinuous source term and convection coefficient are taken into consideration in this paper. For the time derivative, we use the fractional implicit Euler method, followed by the
V. Subburayan, S. Natesan
doaj   +1 more source

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