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954 Results Found

  • Article
  • Open Access
44 Citations
4,454 Views
23 Pages

Spherical Shaped ( A g − F e 3 O 4 / H 2 O ) Hybrid Nanofluid Flow Squeezed between Two Riga Plates with Nonlinear Thermal Radiation and Chemical Reaction Effects

  • Naveed Ahmed,
  • Fitnat Saba,
  • Umar Khan,
  • Ilyas Khan,
  • Tawfeeq Abdullah Alkanhal,
  • Imran Faisal and
  • Syed Tauseef Mohyud-Din

27 December 2018

The main concern is to explore an electro-magneto hydrodynamic (EMHD) squeezing flow of ( A g F e 3 O 4 / H 2 O ) hybrid nanofluid between stretchable parallel Riga plates. The benefits of the use of hybrid nanofluids, and the par...

  • Feature Paper
  • Article
  • Open Access
855 Views
23 Pages

31 January 2025

Complex diseases such as type 2 diabetes are influenced by both environmental and genetic risk factors, leading to a growing interest in identifying gene–environment (G × E) interactions. A three-step variable selection method for single-...

  • Article
  • Open Access
1 Citations
1,052 Views
27 Pages

Semiparametric panel data models are powerful tools for analyzing data with complex characteristics such as linearity and nonlinearity of covariates. This study aims to investigate the estimation and testing of a random effects semiparametric model (...

  • Article
  • Open Access
7 Citations
4,777 Views
25 Pages

19 August 2021

The relative growth rate (RGRnv) is the standardized measurement of forest growth, whereby excluding the size differences between individuals allows their performance to be compared equally. The RGRnv model was developed using the National Forest Inv...

  • Article
  • Open Access
13 Citations
4,119 Views
19 Pages

20 May 2020

A nonlinear sliding-mode controller for a three-phase converter, utilized in plug-in electric vehicles (PEVs), is proposed in this paper. The proposed controller enables the utilized converter to perform multiple functions during different operating...

  • Article
  • Open Access
1,220 Views
11 Pages

Tunable Color Emissions in a Single CdTe Nanowire Based on Complex Optical Transverse Nonlinear Effects

  • Lijun Guo,
  • Lihao Xu,
  • Changjiang Fan,
  • Yunfei Zhang,
  • Hao Yang,
  • Mengwei Li and
  • Chenguang Xin

14 November 2024

Tunable color emissions, emerging from a single CdTe nanowire, are demonstrated experimentally based on optical transverse nonlinear effects. The pumping light at different wavelengths (e.g., 1064 nm and 980 nm) is coupled to a nanowire at both ends...

  • Article
  • Open Access
1 Citations
3,198 Views
17 Pages

Fuzzy Analytical Solution of Horizontal Diffusion Equation into the Vadose Zone

  • Christos Tzimopoulos,
  • Nikiforos Samarinas,
  • Basil Papadopoulos and
  • Christos Evangelides

The process of how soil moisture profiles evolve into the soil and reach the root zone could be estimated by solving the appropriate strong nonlinear Richards’ equation. The nonlinearity of the equation occurs because diffusivity D is generally...

  • Article
  • Open Access
2 Citations
2,248 Views
22 Pages

24 March 2022

Pre-processing associated with massive multiple input-multiple output (MIMO) systems can lead to signals with high envelope fluctuations, which are very prone to nonlinear effects, especially when massive MIMO schemes are combined with orthogonal tra...

  • Article
  • Open Access
20 Citations
4,299 Views
20 Pages

15 February 2018

Finding efficient and accurate solution methods for nonlinear equilibrium equations is a challenging task. This is the case of systems with friction-induced nonlinearities, e.g., friction-damped turbomachinery assemblies and automotive applications s...

  • Article
  • Open Access
7 Citations
2,080 Views
14 Pages

Novel Low-Power Construction of Chaotic S-Box in Multilayer Perceptron

  • Runtao Ren,
  • Jinqi Su,
  • Ban Yang,
  • Raymond Y. K. Lau and
  • Qilei Liu

28 October 2022

Multilayer perceptron is composed of massive distributed neural processors interconnected. The nonlinear dynamic components in these processors expand the input data into a linear combination of synapses. However, the nonlinear mapping ability of ori...

  • Communication
  • Open Access
10 Citations
4,472 Views
16 Pages

The underlying structure of road networks (e.g., circuity, relative discontinuity) contributes to the travel time perception of travelers. This study considers additional factors (e.g., arrival flexibility, access to traffic information) and tests no...

  • Article
  • Open Access
8 Citations
6,248 Views
21 Pages

Biological Networks Entropies: Examples in Neural Memory Networks, Genetic Regulation Networks and Social Epidemic Networks

  • Jacques Demongeot,
  • Mariem Jelassi,
  • Hana Hazgui,
  • Slimane Ben Miled,
  • Narjes Bellamine Ben Saoud and
  • Carla Taramasco

13 January 2018

Networks used in biological applications at different scales (molecule, cell and population) are of different types: neuronal, genetic, and social, but they share the same dynamical concepts, in their continuous differential versions (e.g., non-linea...

  • Article
  • Open Access
6 Citations
3,954 Views
15 Pages

Variation of Elastic Stiffness Parameters of Granitic Rock during Loading in Uniaxial Compressive Test

  • Samad Narimani,
  • Seyed Morteza Davarpanah,
  • László Kovács and
  • Balázs Vásárhelyi

13 April 2023

Any rock mechanics’ design inherently involves determining the deformation characteristics of the rock material. The purpose of this study is to offer equations for calculating the values of bulk modulus (K), elasticity modulus (E), and rigidit...

  • Article
  • Open Access
10 Citations
2,625 Views
36 Pages

Rapid urbanization has accelerated the transformation of community dynamics, highlighting the critical need to understand the interplay between subjective perceptions and objective built environments in shaping life satisfaction for sustainable urban...

  • Article
  • Open Access
16 Citations
2,737 Views
10 Pages

22 January 2021

We numerically investigate the supratransmission phenomenon in an active nonlinear system modeled by the 1D/2D discrete sine-Gordon equation with non-local feedback. While, at a given frequency, the typical passive system exhibits a single amplitude...

  • Article
  • Open Access
416 Views
26 Pages

12 December 2025

This study investigated the influence of coconut oil concentration (0–2%) on the nonlinear rheological and thermal behavior of soy protein concentrate (SPC) mixtures and integrated these data into computational fluid dynamics (CFD) models to pr...

  • Article
  • Open Access
4 Citations
4,915 Views
22 Pages

1 March 2023

In the cognitive and neural sciences, Bayesianism refers to a collection of concepts and methods stemming from various implementations of Bayes’ theorem, which is a formal way to calculate the conditional probability of a hypothesis being true...

  • Article
  • Open Access
820 Views
21 Pages

11 June 2025

The additive manufacturing of piezoresistive sensors offers several advantages, such as the elimination of assembly or installation steps, enabling integration into complex parts precisely where desired, and compatibility with soft robotics applicati...

  • Article
  • Open Access
27 Citations
4,056 Views
23 Pages

Traditional linear time-domain analysis is used widely for predicting the motions of floating structures. When it comes to a wave energy structure, which usually is subjected to larger relative (to their geometric dimensions) wave and motion amplitud...

  • Feature Paper
  • Article
  • Open Access
25 Citations
6,168 Views
20 Pages

Characterizing Hypervelocity Impact (HVI)-Induced Pitting Damage Using Active Guided Ultrasonic Waves: From Linear to Nonlinear

  • Menglong Liu,
  • Kai Wang,
  • Cliff J. Lissenden,
  • Qiang Wang,
  • Qingming Zhang,
  • Renrong Long,
  • Zhongqing Su and
  • Fangsen Cui

18 May 2017

Hypervelocity impact (HVI), ubiquitous in low Earth orbit with an impacting velocity in excess of 1 km/s, poses an immense threat to the safety of orbiting spacecraft. Upon penetration of the outer shielding layer of a typical two-layer shielding sys...

  • Feature Paper
  • Review
  • Open Access
10 Citations
3,736 Views
29 Pages

24 March 2023

In a non-linear system, such as a biological system, the change of the output (e.g., behaviour) is not proportional to the change of the input (e.g., exposure to stressors). In addition, biological systems also change over time, i.e., they are dynami...

  • Article
  • Open Access
12 Citations
4,452 Views
22 Pages

15 August 2019

This paper proposes a perturbation estimation-based nonlinear adaptive control (NAC) for a voltage-source converter-based high voltage direct current (VSC-HVDC) system which is applied to interconnect offshore large-scale wind farms to the onshore ma...

  • Article
  • Open Access
3 Citations
1,300 Views
15 Pages

Fracture Load Prediction of Non-Linear Structural Steels through Calibration of the ASED Criterion

  • Marcos Sánchez,
  • Sergio Cicero,
  • Sergio Arrieta and
  • Ali Reza Torabi

29 June 2023

In this work, the application of the Average Strain Energy Density (ASED) criterion for the estimation of failure loads in materials with nonlinear behavior containing U-shaped notches is presented. The ASED criterion was originally defined to predic...

  • Article
  • Open Access
8 Citations
8,403 Views
19 Pages

A Numerical Implementation of a Nonlinear Mild Slope Model for Shoaling Directional Waves

  • Justin R. Davis,
  • Alex Sheremet,
  • Miao Tian and
  • Saurabh Saxena

25 February 2014

We describe the numerical implementation of a phase-resolving, nonlinear spectral model for shoaling directional waves over a mild sloping beach with straight parallel isobaths. The model accounts for non-linear, quadratic (triad) wave interactions a...

  • Article
  • Open Access
857 Views
17 Pages

2 May 2025

In groundwater quality analysis, nonlinear models are typically used, with domains spanning the entire real number line. In this study, alongside these models (Logistic, Gompertz and Richards), nonlinear models defined based on functions whose domain...

  • Article
  • Open Access
18 Citations
3,215 Views
16 Pages

In recent years, the development of quick and streamlined methods for the detection and localization of structural damage has been achieved by analysing key dynamic parameters before and after significant events or as a result of aging. Many Structur...

  • Article
  • Open Access
4 Citations
1,301 Views
16 Pages

Chaotic systems, governed by deterministic nonlinear equations yet exhibiting highly complex and unpredictable behaviors, have emerged as valuable tools at the intersection of mathematics, engineering, and information security. This paper presents a...

  • Article
  • Open Access
23 Citations
6,516 Views
8 Pages

A Blind Nonlinearity Compensator Using DBSCAN Clustering for Coherent Optical Transmission Systems

  • Elias Giacoumidis,
  • Yi Lin,
  • Mutsam Jarajreh,
  • Sean O’Duill,
  • Kevin McGuinness,
  • Paul F. Whelan and
  • Liam P. Barry

17 October 2019

Coherent fiber-optic communication systems are limited by the Kerr-induced nonlinearity. Benchmark optical and digital nonlinearity compensation techniques are typically complex and tackle deterministic-induced nonlinearities. However, these techniqu...

  • Article
  • Open Access
21 Citations
3,025 Views
19 Pages

2 September 2022

Individual-tree aboveground biomass (AGB) estimation is vital for precision forestry and still worth exploring using multi-platform LiDAR data for high accuracy and efficiency. Based on the unmanned aerial vehicle and terrestrial LiDAR data, this stu...

  • Article
  • Open Access
17 Citations
5,317 Views
38 Pages

2 March 2022

A novel Artificial Neural Network (ANN) Based Optimal Feedforward Torque Control (OFTC) strategy is proposed which, after proper ANN design, training and validation, allows to analytically compute the optimal reference currents (minimizing copper and...

  • Feature Paper
  • Article
  • Open Access
5 Citations
2,525 Views
53 Pages

26 September 2023

A continuum mechanical theory with foundations in generalized Finsler geometry describes the complex anisotropic behavior of skin. A fiber bundle approach, encompassing total spaces with assigned linear and nonlinear connections, geometrically charac...

  • Article
  • Open Access
14 Citations
4,267 Views
11 Pages

Nonlinear Absorption and Refraction of Picosecond and Femtosecond Pulses in HgTe Quantum Dot Films

  • Arturs Bundulis,
  • Ivan A. Shuklov,
  • Vyacheslav V. Kim,
  • Alaa A. Mardini,
  • Jurgis Grube,
  • Janis Alnis,
  • Anna A. Lizunova,
  • Vladimir F. Razumov and
  • Rashid A. Ganeev

10 December 2021

We report measurements of the saturated intensities, saturable absorption, and nonlinear refraction in 70-nm thick films containing 4 nm HgTe quantum dots. We demonstrate strong nonlinear refraction and saturable absorption in the thin films using tu...

  • Article
  • Open Access
5 Citations
6,823 Views
17 Pages

11 March 2015

A system is differentially flat if it is Lie–Bäcklund (L-B) equivalent to a free dynamical system that has dimensions equal to that of the input of the original system. Utilizing this equivalence, the problem of nonlinear model predictive control of...

  • Article
  • Open Access
653 Views
22 Pages

Dataset-Learning Duality and Emergent Criticality

  • Ekaterina Kukleva and
  • Vitaly Vanchurin

22 September 2025

In artificial neural networks, the activation dynamics of non-trainable variables are strongly coupled to the learning dynamics of trainable variables. During the activation pass, the boundary neurons (e.g., input neurons) are mapped to the bulk neur...

  • Feature Paper
  • Article
  • Open Access
1,534 Views
27 Pages

The housing prices are crucial to the sustainable development of the real estate market. Nowadays, few academic attempts have focused on the impact of multi-dimensional accessibility on housing prices in a large-scale area. This study utilized machin...

  • Feature Paper
  • Article
  • Open Access
17 Citations
3,594 Views
19 Pages

System Identification Based on Tensor Decompositions: A Trilinear Approach

  • Laura-Maria Dogariu,
  • Silviu Ciochină,
  • Jacob Benesty and
  • Constantin Paleologu

17 April 2019

The theory of nonlinear systems can currently be encountered in many important fields, while the nonlinear behavior of electronic systems and devices has been studied for a long time. However, a global approach for dealing with nonlinear systems does...

  • Article
  • Open Access
18 Citations
3,231 Views
16 Pages

20 January 2022

Traveling wave solutions, including localized and periodic structures (e.g., solitary waves, cnoidal waves, and periodic waves), to a symmetry Korteweg–de Vries equation (KdV) with integer and rational power law nonlinearity are reported using...

  • Feature Paper
  • Article
  • Open Access
1 Citations
860 Views
19 Pages

16 April 2025

Splitting methods provide an efficient approach to solving evolutionary wave equations, especially in situations where dispersive and nonlinear effects on wave propagation can be separated, as in the generalized nonlinear Schrödinger equation (G...

  • Article
  • Open Access
6 Citations
1,505 Views
29 Pages

14 February 2024

Quantum calculus can provide new insights into the nonlinear behaviour of functions and equations, addressing problems that may be difficult to tackle by classical calculus due to high nonlinearity. Iterative methods for solving nonlinear equations c...

  • Article
  • Open Access
10 Citations
2,800 Views
20 Pages

4 December 2019

This paper aims to investigate the nonlinear dynamic properties of a two-point and symmetrically supported pipeline bracket system coated with the damping element using an elastic-porous metal rubber. The dynamic model of the studied two-point and sy...

  • Review
  • Open Access
24 Citations
7,411 Views
38 Pages

State of the Art of Boron and Tin Complexes in Second- and Third-Order Nonlinear Optics §

  • Cristina C. Jiménez,
  • Alejandro Enríquez-Cabrera,
  • Oscar González-Antonio,
  • Javier Ordóñez-Hernández,
  • Pascal G. Lacroix,
  • Pablo Labra-Vázquez,
  • Norberto Farfán and
  • Rosa Santillan

10 December 2018

Boron and tin complexes have been a versatile and very interesting scaffold for the design of nonlinear optical (NLO) chromophores. In this paper we present a wide range of reports since the 1990s to date, which include second-order (e.g., second har...

  • Article
  • Open Access
17 Citations
5,315 Views
26 Pages

Given that adolescents often experience fundamental changes in social relationships, they are considered to be especially prone to loneliness. Meanwhile, theory and research highlight that both extraversion and neuroticism are closely intertwined wit...

  • Article
  • Open Access
33 Citations
7,183 Views
24 Pages

21 January 2021

Nonlinear finite element (FE) analysis of reinforced concrete (RC) structures is characterized by numerous modeling options and input parameters. To accurately model the nonlinear RC behavior involving concrete cracking in tension and crushing in com...

  • Feature Paper
  • Article
  • Open Access
4 Citations
1,746 Views
19 Pages

Next-generation wireless systems require increased spectral and energy efficiency in terminals. This can only be achieved if the nonlinear characteristics of the radio front-end, primarily the power amplifier (PA), are known and considered while desi...

  • Article
  • Open Access
6 Citations
2,099 Views
21 Pages

13 November 2024

The linear and nonlinear rheological behaviors of fish myofibrillar protein (FMP) paste with 75%, 82%, and 90% moisture content were evaluated using small-amplitude oscillatory shear (SAOS) and large-amplitude oscillatory shear (LAOS) tests. SAOS rev...

  • Article
  • Open Access
8 Citations
4,749 Views
22 Pages

17 May 2019

Georeferencing is an indispensable necessity regarding operating with kinematic multi-sensor systems (MSS) in various indoor and outdoor areas. Information from object space combined with various types of prior information (e.g., geometrical constrai...

  • Article
  • Open Access
23 Citations
4,758 Views
15 Pages

23 March 2020

Developing accurate, efficient, and robust closure models is essential in the construction of reduced order models (ROMs) for realistic nonlinear systems, which generally require drastic ROM mode truncations. We propose a deep residual neural network...

  • Article
  • Open Access
5 Citations
2,375 Views
16 Pages

14 October 2021

The speed response of the interior permanent magnet synchronous motor (IPMSM) drive at low speeds was analyzed. To eliminate the effect of external disturbance or parameter uncertainty, a nonlinear speed control loop was designed based on the sliding...

  • Article
  • Open Access
12 Citations
4,917 Views
16 Pages

Hen Egg Production Forecasting: Capabilities of Machine Learning Models in Scenarios with Limited Data Sets

  • Nikolajs Bumanis,
  • Armands Kviesis,
  • Liga Paura,
  • Irina Arhipova and
  • Mihails Adjutovs

27 June 2023

To achieve a sophisticated and self-sufficient production environment that aims to optimize a particular production sequence or direction, a combination of multiple interconnected IoT devices, software, and decision-making expertise is required. This...

  • Article
  • Open Access
6 Citations
1,905 Views
15 Pages

2 July 2019

In this paper, we are concerned with a nonlinear system containing some essential symmetrical structures (e.g., cross-diffusion) in the two-dimensional setting, which is proposed to model the biological transport networks. We first provide an a prior...

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