Results 51 to 60 of about 3,661 (155)

Evaluation of six scatter correction methods based on spectral analysis in 99m Tc SPECT imaging using SIMIND Monte Carlo simulation

Journal of Medical Physics, 2013
Compton-scattered photons included within the photopeak pulse-height window result in the degradation of SPECT images both qualitatively and quantitatively.
Mahsa Noori Asl, Alireza Sadremomtaz, Ahmad Bitarafan-Rajabi   +2 more
doaj   +1 more source

A novel hybrid numerical method for delay differential equations with delay-dependent nonlocal condition

Arab Journal of Basic and Applied Sciences
This paper develops a novel hybrid numerical method for the [Formula: see text]-uniform approximation of singularly perturbed second-order delay differential equations subject to delay-dependent nonlocal boundary condition.
Zelal Temel
doaj   +1 more source

Approximating the Riemann–Stieltjes integral by a trapezoidal quadrature rule with applications

Mathematical and Computer Modelling, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Deconvolution of the density of states of tip and sample through constant-current tunneling spectroscopy

Beilstein Journal of Nanotechnology, 2011
We introduce a scheme to obtain the deconvolved density of states (DOS) of the tip and sample, from scanning tunneling spectra determined in the constant-current mode (z–V spectroscopy).
Holger Pfeifer, Berndt Koslowski, Paul Ziemann   +2 more
doaj   +1 more source

Analysis and Approximate Replacement of Tool for Trapezoid Spline Shaft

Jixie chuandong, 2022
The trapezoid spline has the characteristics of good guidance and self-centering， and its application range has been extended to the field of low-speed and high-torque transmission. Based on the tooth profile normal line method， the formula of the hob tooth profile of the trapezoid spline shaft is analyzed.
Zhigang Cao, Jianzhong Xu, Guangjun Shao, Kun Zhang, Shaobo Kang, Yakang Li, Hechen Xing, Yu Zhao, Shaofei Wang   +8 more
openaire   +1 more source

Numerical Study of Fourth-Order Volterra Partial Integrodifferential Equation With Weakly Singular Kernel via Subdivision Collocation Approach

Journal of Function Spaces
In the present article, an emerging subdivision-based technique is developed for the numerical solution of linear Volterra partial integrodifferential equations (LVPIDEs) of order four with a weakly singular kernel. To approximate the spatial derivatives,
Zainab Iqbal, Syeda Tehmina Ejaz, Jihad Younis, M. I. Elashiry, Faizah D. Alanazi   +4 more
doaj   +1 more source

An application of multi-objective transportation problem in type-2 Fermatean fuzzy number incorporating the RS-MABAC technique

Franklin Open
This study describes two decision making problems in trapezoidal type-2 Fermatean fuzzy numbers. Firstly, to address multi-criteria decision-making problem, we provide a hybrid rank sum and multi-attributive border approximation area comparison approach ...
P. Anukokila, R. Nisanthini, B. Radhakrishnan   +2 more
doaj   +1 more source

Trapezoidal Methods of Approximating Solutions of Differential Equations [PDF]

Mathematical Tables and Other Aids to Computation, 1955
Hammer, Preston C., Hollingsworth, Jack W.   +1 more
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Automated Tuning of PID Controllers Using a Generalized Discrete PID Structure With Particle Swarm Optimization

IEEE Access
Proportional-Integral-Derivative (PID) controllers remain a widely adopted solution in the field of control systems due to their simplicity, flexibility, and ability to control a wide range of processes. Despite their success in various applications, PID
Abdul Aziz Al Barazi, Ercan Aykut
doaj   +1 more source

Elementary and Robust Distribution Shape Analysis via Mean Absolute Deviations and Quantile-Based Quadrature Approximations

Journal of Experimental and Theoretical Analyses
In both experimental and theoretical analyses of data, we often look to select a set of simple components that can be combined to create an appropriate model for the data.
Triparna Kundu, Rashanjot Kaur, Eugene Pinsky   +2 more
doaj   +1 more source