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26,550 Results Found

  • Article
  • Open Access
7 Citations
3,270 Views
17 Pages

16 July 2020

In this paper, we present a comparative study between Sinc–Galerkin method and a modified version of the variational iteration method (VIM) to solve non-linear Sturm–Liouville eigenvalue problem. In the Sinc method, the problem under cons...

(This article belongs to the Special Issue Iterative Numerical Functional Analysis with Applications)
  • Review
  • Open Access
71 Citations
9,459 Views
58 Pages

Comparison of Chemometric Problems in Food Analysis using Non-Linear Methods

  • Werickson Fortunato de Carvalho Rocha,
  • Charles Bezerra do Prado and
  • Niksa Blonder

Food analysis is a challenging analytical problem, often addressed using sophisticated laboratory methods that produce large data sets. Linear and non-linear multivariate methods can be used to process these types of datasets and to answer questions...

(This article belongs to the Special Issue Chemometrics Tools Used in Analytical Chemistry)
  • Article
  • Open Access
1 Citations
3,622 Views
20 Pages

10 September 2021

In this work, we develop a new class of methods which have been created in order to numerically solve non-linear second-order in time problems in an efficient way. These methods are of the Rosenbrock type, and they can be seen as a generalization of...

(This article belongs to the Special Issue Numerical Methods for Evolutionary Problems)
  • Article
  • Open Access
2,027 Views
24 Pages

Accurate assessment and prediction of mandible shape are fundamental prerequisites for successful orthognathic surgery. Previous studies have predominantly used linear models to predict lower facial structures from facial landmarks or measurements; t...

(This article belongs to the Special Issue Current Problems and Advances in Computational and Applied Mechanics (AfriComp6))
  • Article
  • Open Access
17 Citations
3,846 Views
25 Pages

3 November 2021

This paper presents an extended comparison study between 16 different linear and non-linear regression methods to predict the sugar, pH, and anthocyanin contents of grapes through hyperspectral imaging (HIS). Despite the numerous studies on this subj...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
13 Citations
3,761 Views
30 Pages

11 February 2023

Block hybrid methods with intra-step points are considered in this study. These methods are implemented to solve linear and nonlinear single and systems of first order differential equations. The stability, convergence, and accuracy of the proposed m...

(This article belongs to the Special Issue Mathematical Modelling and Applications)
  • Article
  • Open Access
42 Citations
4,910 Views
22 Pages

2 December 2021

We discuss the application of the Simple Equations Method (SEsM) for obtaining exact solutions of non-linear differential equations to several cases of equations containing non-polynomial non-linearity. The main idea of the study is to use an appropr...

(This article belongs to the Special Issue Advanced Numerical Methods for Differential Equations)
  • Article
  • Open Access
5 Citations
3,675 Views
11 Pages

25 February 2022

This paper proposes a stiffness method based structural analysis algorithm for geometrically non-linear structures. In this study, the applied load on the joints has been discretized to a sequence of a few loadings applied. Each loading step produces...

(This article belongs to the Special Issue Dynamics of Building Structures)
  • Article
  • Open Access
11 Citations
5,956 Views
12 Pages

13 May 2015

In this paper, the exp-function method is improved to construct exact solutions of non-linear lattice equations by modifying its exponential function ansätz. The improved method has two advantages. One is that it can solve non-linear lattice equation...

(This article belongs to the Special Issue Non-Linear Lattice)
  • Article
  • Open Access
7 Citations
2,058 Views
17 Pages

A New Extension of Optimal Auxiliary Function Method to Fractional Non-Linear Coupled ITO System and Time Fractional Non-Linear KDV System

  • Rashid Nawaz,
  • Aaqib Iqbal,
  • Hina Bakhtiar,
  • Wissal Audah Alhilfi and ,
  • Nicholas Fewster-Young,
  • Ali Hasan Ali and
  • Ana Danca Poțclean
  • + 2 authors+ 0 author

14 September 2023

In this article, we investigate the utilization of Riemann–Liouville’s fractional integral and the Caputo derivative in the application of the Optimal Auxiliary Function Method (OAFM). The extended OAFM is employed to analyze fractional n...

(This article belongs to the Special Issue Advanced Approximation Techniques and Their Applications)
  • Article
  • Open Access
1,401 Views
16 Pages

Panel-based aeroelasticity models are commonly used to conduct mid-fidelity aeroelastic analysis. The unsteady vortex lattice method (UVLM) in particular is used when non-linear aerodynamic corrections are needed, for example by utilizing the α...

(This article belongs to the Section Aeronautics)
  • Article
  • Open Access
5 Citations
5,038 Views
14 Pages

There has been considerable interest in seeking exact solutions of non-linear evolution equations that describe important physical and biological processes. Nonetheless, it is a difficult undertaking to determine closed form solutions of mathematical...

(This article belongs to the Section Natural Sciences)
  • Feature Paper
  • Article
  • Open Access
1 Citations
1,513 Views
22 Pages

19 November 2024

A new numerical method for solving Volterra non-linear convolution integral equations (NLCVIEs) of the second kind is presented in this work. This new approach, named IIRFM-A, is based on the combined use of the Laplace transformation, a first-order...

(This article belongs to the Special Issue Recent Advances in Theoretical and Numerical Analysis for Fractional and Integral Differential Equations)
  • Article
  • Open Access
5 Citations
4,021 Views
20 Pages

Stochastic Material Point Method for Analysis in Non-Linear Dynamics of Metals

  • Weidong Chen,
  • Yaqin Shi,
  • Jingxin Ma,
  • Chunlong Xu and ,
  • Shengzhuo Lu and
  • Xing Xu
  • + 1 author+ 0 author

21 January 2019

A stochastic material point method is proposed for stochastic analysis in non-linear dynamics of metals with varying random material properties. The basic random variables are parameters of equation of state and those of constitutive equation. In con...

  • Article
  • Open Access
18 Citations
8,569 Views
30 Pages

A Hybrid Non-Linear Unsteady Vortex Lattice-Vortex Particle Method for Rotor Blades Aerodynamic Simulations

  • Vincent Proulx-Cabana,
  • Minh Tuan Nguyen,
  • Sebastien Prothin,
  • Guilhem Michon and
  • Eric Laurendeau

16 February 2022

This study presents a hybrid non-linear unsteady vortex lattice method-vortex particle method (NL UVLM-VPM) to investigate the aerodynamics of rotor blades hovering in and out of ground effect. The method is of interest for the fast aerodynamic predi...

  • Article
  • Open Access
5 Citations
2,017 Views
9 Pages

17 November 2022

In this paper, we use the averaging method to find an approximate solution for the optimal control of non-linear differential inclusions with fast-oscillating coefficients on a finite time interval.

(This article belongs to the Section Mathematical Analysis)
  • Article
  • Open Access
25 Citations
3,478 Views
18 Pages

A New Hybrid Optimal Auxiliary Function Method for Approximate Solutions of Non-Linear Fractional Partial Differential Equations

  • Rashid Ashraf,
  • Rashid Nawaz,
  • Osama Alabdali,
  • Nicholas Fewster-Young and ,
  • Ali Hasan Ali,
  • Firas Ghanim and
  • Alina Alb Lupaş
  • + 2 authors+ 0 author

This study uses the optimal auxiliary function method to approximate solutions for fractional-order non-linear partial differential equations, utilizing Riemann–Liouville’s fractional integral and the Caputo derivative. This approach elim...

(This article belongs to the Section General Mathematics, Analysis)
  • Article
  • Open Access
1 Citations
3,386 Views
58 Pages

15 January 2024

The aim of this article is to investigate the parameter sensitivity of the (Non-Linear) Unsteady Vortex Lattice Method-Vortex Particle Method [(NL-)UVLM-VPM] with Particle Strength Exchange-Large Eddy Simulations (PSE-LES) method on a lower Reynolds...

(This article belongs to the Special Issue Recent Advances in Aerodynamics and Aeroacoustics: Towards Greener Aviation)
  • Article
  • Open Access
4 Citations
2,918 Views
23 Pages

22 July 2024

Ride-hailing services have grown rapidly, presenting challenges such as increased traffic congestion, inefficient driver workload distribution, and environmental concerns like higher fuel consumption and emissions. This study develops a non-linear ri...

(This article belongs to the Section E: Applied Mathematics)
  • Article
  • Open Access
6 Citations
4,164 Views
19 Pages

20 January 2020

This study uses an optimization approach representation and numerical solution for the variable viscosity and non-linear Boussinesq effects on the free convection over a vertical truncated cone in porous media. The surface of the vertical truncated c...

(This article belongs to the Section J: Thermal Management)
  • Article
  • Open Access
3 Citations
2,883 Views
17 Pages

We propose a new optimal iterative scheme without memory free from derivatives for solving non-linear equations. There are many iterative schemes existing in the literature which either diverge or fail to work when f′(x)=0. However, our propose...

(This article belongs to the Special Issue Mathematical and Computational Modeling on Fluid Flow and Heat Transfer)
  • Article
  • Open Access
7 Citations
4,469 Views
16 Pages

4 January 2019

This paper presents a method of extracting temperature-dependent parameters of thermoelectric material from the operating conditions of thermoelectric cooler (TEC). Based on the finite element method of calculating TEC’s performance, non-linear...

(This article belongs to the Section I: Energy Fundamentals and Conversion)
  • Article
  • Open Access
763 Views
21 Pages

Non-Linear Method of Vehicle Pre-Crash Velocity Estimation Based on Random Forest Regression and Energy Equivalent Speed for Compact Vehicle Class

  • Milos Poliak,
  • Bartosz Lewandowski,
  • Filip Turoboś,
  • Przemysław Kubiak and ,
  • Marek Jaśkiewicz,
  • Marcin Markiewicz,
  • Damian Frej and
  • Justyna Jaśkiewicz
  • + 3 authors+ 0 author

29 March 2026

Until now, there have been no published attempts to utilize ensemble learning approaches to pre-crash velocity estimation. In this research article, we focus on the method of vehicle crash velocity prediction based on the random forest regression app...

  • Article
  • Open Access
6 Citations
4,489 Views
17 Pages

21 July 2023

Vibration-control techniques generally fall into two categories: passive methods that optimize the structure of the suspension to absorb any impact from the ground, and active methods that directly control the vertical force of the suspension by hydr...

(This article belongs to the Special Issue Modeling, Dynamics, Intelligent Control, and Fault Diagnosis of Vehicle Systems)
  • Article
  • Open Access
2,492 Views
13 Pages

Solving Stochastic Nonlinear Poisson-Boltzmann Equations Using a Collocation Method Based on RBFs

  • Samaneh Mokhtari,
  • Ali Mesforush,
  • Reza Mokhtari,
  • Rahman Akbari and
  • Clemens Heitzinger

29 April 2023

In this paper, we present a numerical scheme based on a collocation method to solve stochastic non-linear Poisson–Boltzmann equations (PBE). This equation is a generalized version of the non-linear Poisson–Boltzmann equations arising from...

(This article belongs to the Special Issue Stochastic Processes: Theory, Simulation and Applications)
  • Article
  • Open Access
10 Citations
9,672 Views
42 Pages

17 September 2015

A few literary scholars have long claimed that Shakespeare did not write some of his best plays (history plays and tragedies) and proposed at one time or another various suspect authorship candidates. Most modern-day scholars of Shakespeare have reje...

  • Article
  • Open Access
1 Citations
1,355 Views
14 Pages

Linear and Non-Linear Methods to Discriminate Cortical Parcels Based on Neurodynamics: Insights from sEEG Recordings

  • Karolina Armonaite,
  • Livio Conti,
  • Luigi Laura,
  • Michele Primavera and
  • Franca Tecchio

Understanding human cortical neurodynamics is increasingly important, as highlighted by the European Innovation Council, which prioritises tools for measuring and stimulating brain activity. Unravelling how cytoarchitecture, morphology, and connectiv...

(This article belongs to the Special Issue Fractal Analysis in Biology and Medicine)
  • Article
  • Open Access
13 Citations
2,327 Views
12 Pages

9 June 2023

This paper studies a parameter estimation problem for the non-linear diffusion equation within multiphase porous media flow, which has important applications in the field of oil reservoir simulation. First, the given problem is transformed into an op...

(This article belongs to the Special Issue Advances in Computational Science and Its Applications)
  • Proceeding Paper
  • Open Access
1,468 Views
14 Pages

In this work, we study the existence and uniqueness of the solution to a wave equation with dynamic Wentztell-type boundary conditions on a part of the boundary Γ1 of the domain Ω with non-linear delays in non-linear dampings in Ω a...

(This article belongs to the Proceedings of The 1st International Online Conference on Mathematics and Applications)
  • Article
  • Open Access
3 Citations
3,551 Views
18 Pages

4 December 2021

Dynamic analyses of vertical hydro power plant rotors require the consideration of the non-linear bearing characteristics. This study investigates the vibrational behavior of a typical vertical machine using a time integration method that considers n...

(This article belongs to the Special Issue Tilting Pad Journal Bearings: State of the Art)
  • Article
  • Open Access
4 Citations
3,153 Views
21 Pages

Background/Objectives: Cancer is a dynamic and complex disease that remains largely untreated despite major advances in oncology and treatment. In this context, we aimed here to investigate optimal control techniques in the management of tumor growth...

(This article belongs to the Section Cancer Biology and Oncology)
  • Article
  • Open Access
6 Citations
5,265 Views
17 Pages

22 August 2019

Studying the characteristics of materials through a finite element analysis (FEA) has various benefits; hence, many studies have been conducted to improve the reliability of the analysis results. In general, the mechanical properties used in FEA for...

  • Article
  • Open Access
  • Best Paper Award
60 Citations
7,163 Views
19 Pages

On the Deterministic Prediction of Water Waves

  • Marco Klein,
  • Matthias Dudek,
  • Günther F. Clauss,
  • Sören Ehlers and ,
  • Jasper Behrendt,
  • Norbert Hoffmann and
  • Miguel Onorato
  • + 2 authors+ 0 author

7 January 2020

This paper discusses the potential of deterministic wave prediction as one basic module for decision support of offshore operations. Therefore, methods of different complexity—the linear wave solution, the non-linear Schrödinger equation (...

(This article belongs to the Special Issue Nonlinear Wave Hydrodynamics)
  • Article
  • Open Access
19 Citations
2,958 Views
17 Pages

Most complex physical phenomena are described by non-linear Burgers’ equations, which help us understand them better. This article uses the transformation and the fractional Taylor’s formula to find approximate solutions for non-linear fr...

(This article belongs to the Special Issue Numerical and Exact Methods for Nonlinear Differential Equations and Applications in Physics)
  • Article
  • Open Access
19 Citations
4,876 Views
23 Pages

Data-Driven Fault Diagnosis Techniques: Non-Linear Directional Residual vs. Machine-Learning-Based Methods

  • Nicholas Cartocci,
  • Marcello R. Napolitano,
  • Francesco Crocetti,
  • Gabriele Costante and ,
  • Paolo Valigi and
  • Mario L. Fravolini
  • + 1 author+ 0 author

29 March 2022

Linear dependence of variables is a commonly used assumption in most diagnostic systems for which many robust methodologies have been developed over the years. In case the system nonlinearities are relevant, fault diagnosis methods, relying on the as...

(This article belongs to the Special Issue Artificial Intelligence for Fault Diagnostics and Prognostics)
  • Review
  • Open Access
17 Citations
7,877 Views
19 Pages

17 August 2024

This paper provides a recent overview of the exact, approximate, and hybrid optimization methods that handle Multi-Objective Mixed-Integer Non-Linear Programming (MO-MINLP) problems. Both the domains of exact and approximate research have experienced...

  • Article
  • Open Access
2 Citations
3,214 Views
17 Pages

High-performance liquid chromatography (HPLC) is a dynamic separation process with a lot of parameters having different roles. The equilibrium-dispersive model is relevant for simulating HPLC because it is relatively simple and suitable for high-effi...

(This article belongs to the Section Chromatographic Separations)
  • Article
  • Open Access
27 Citations
4,684 Views
24 Pages

1 August 2019

In this article, we propose a modified self-adaptive conjugate gradient algorithm for handling nonlinear monotone equations with the constraints being convex. Under some nice conditions, the global convergence of the method was established. Numerical...

(This article belongs to the Special Issue Computational Methods in Analysis and Applications)
  • Article
  • Open Access
13 Citations
3,305 Views
16 Pages

23 September 2022

Engineers and researchers are interested in the study of nonlinear convection, viscous dissipation, and Joule heating in various flow configurations due to their various applications in engineering processes. That is why the present study deals with...

(This article belongs to the Special Issue Symmetry in CFD: Convection, Diffusion and Dynamics)
  • Review
  • Open Access
27 Citations
10,362 Views
35 Pages

7 September 2023

Wheat quality assessment involves physical, physicochemical, chemical, and sensory characterization of wheat kernels and the resulting wheat flour, dough, and bread. The physical tests conducted on wheat flour dough are mostly based on empirical meth...

(This article belongs to the Special Issue Recent Advances in the Assessment of Cereal and Cereal-Based Product Quality)
  • Article
  • Open Access
12 Citations
3,662 Views
36 Pages

24 November 2022

The KdV equation has special significance as it describes various physical phenomena. In this paper, we use two methods, namely, a variational homotopy perturbation method and a classical finite-difference method, to solve 1D and 2D KdV equations wit...

(This article belongs to the Special Issue Numerical Methods and Applications for Differential Problems)
  • Article
  • Open Access
10 Citations
2,921 Views
12 Pages

21 June 2021

In this paper, we deal with some applications of the network simulation method (NMS) to the non-linear differential equations derived of a parametric family associated to stated problems by Newton in and others like the parabolic mirror and van der P...

(This article belongs to the Special Issue Dynamical Systems and Their Applications Methods)
  • Article
  • Open Access
12 Citations
5,768 Views
18 Pages

This paper evaluates the practice of using moment connections in the perimeter of the structural system and shear connections within the interior connections of the three-dimensional structural system from the perspective of resistance to progressive...

  • Article
  • Open Access
15 Citations
4,633 Views
23 Pages

29 December 2022

The present exploration discusses the combined effect of non-linear thermal radiation along with viscous dissipation and magnetic field through a porous medium. A distinctive aspect of our work is the simultaneous use of porous wall and a porous mate...

(This article belongs to the Topic Computational Fluid Dynamics (CFD) and Its Applications)
  • Article
  • Open Access
6 Citations
2,844 Views
14 Pages

30 August 2021

In this article, we use the homotopy perturbation transform method to find the fractional Kersten–Krasil’shchik coupled Korteweg–de Vries (KdV) non-linear system. This coupled non-linear system is typically used to describe electric circuits, traffic...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
2 Citations
4,328 Views
34 Pages

27 December 2024

The solution of the non-linear Föppl–von Kármán equations for square plates in the form of expansion over a system of eigenfunctions, generated by a linear self-adjoint operator, is obtained. The coefficients of the expansion...

(This article belongs to the Special Issue Symmetry in Mechanical Engineering: Properties and Applications)
  • Article
  • Open Access
31 Citations
5,639 Views
23 Pages

22 April 2020

The article studies the simulation-based mathematical modeling of bioheat transfer under the Dirichlet boundary condition. We used complex non-linear dual-phase-lag bioheat transfer (DPLBHT) for analyzing the temperature distribution in skin tissues...

(This article belongs to the Special Issue Biological Statistical Mechanics)
  • Article
  • Open Access
2 Citations
3,549 Views
24 Pages

23 November 2022

This paper aims to use non-linear physical analysis to calculate the displacement of beams and slabs in a cracked state. This study uses the commercial software SAP2000 to perform a numerical analysis using the finite element formulation, applying th...

(This article belongs to the Special Issue Fatigue and Fracture of Advanced Materials and Composites: Experiment, Modeling and Theory)
  • Article
  • Open Access
22 Citations
3,946 Views
17 Pages

2 June 2022

The present study concerns investigating the two-dimensional Magnetohydrodynamics (MHD) boundary layer flow of Williamson nanofluid over a non-linear stretching sheet. The focus of this study is based on the global influence of the non-Newtonian Will...

(This article belongs to the Section Chemical Processes and Systems)
  • Article
  • Open Access
3 Citations
4,511 Views
12 Pages

We address a number of technical problems with the popular Practitioner Black-Scholes (PBS) method for valuing options. The method amounts to a two-stage procedure in which fitted values of implied volatilities (IV) from a linear regression are plugg...

(This article belongs to the Special Issue Option Pricing)

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