Analysis of Flue Gas Emission Data from Fluidized Bed Combustion Using Self-Organizing Maps by Mika Liukkonen, Mikko Heikkinen, Eero Hälikkä, Teri Hiltunen, Yrjö Hiltunen

“…The goals of the study were to find dependencies between process variables and the concentrations of gaseous emission components and to create multivariate nonlinear models describing their formation in the process. …”
Get full text

A Probabilistic Assessment Model for Train-Bridge Systems: Special Attention on Track Irregularities by Dejun Liu, Lifeng Xin, Xiaozhen Li, Jiaxin Zhang

“…In this paper, a probabilistic model devoted to investigating the dynamic behaviors of train-bridge systems subjected to random track irregularities is presented, in which a train-ballasted track-bridge coupled model with nonlinear wheel-rail contacts is introduced, and then a new approach for simulating a random field of track irregularities is developed; moreover, the probability density evolution method is used to describe the probability transmission from excitation inputs to response outputs; finally, extended analysis from three aspects, that is, stochastic analysis, reliability analysis, and correlation analysis, are conducted on the evaluation and application of the proposed model. …”
Get full text

Using DIC techniques to measure strain ranges inside the cyclic plastic zone ahead of a fatigue crack tip by Giancarlo luis Gómez Gonzáles, Julián Andrés Ortiz González, Jaime Tupiassú Pinho de Castro, José Luiz de França Freire

“…The applied technique can identify as well the effects of other nonlinear phenomena that happen in the near-tip region, such as crack closure. …”
Get full text

Optimizing Pinned Nodes to Maximize the Convergence Rate of Multiagent Systems with Digraph Topologies by Yujuan Han, Wenlian Lu, Tianping Chen, Changkai Sun

Get full text

Experimental Implementation of Cascaded H-Bridge Multilevel Inverter with an Improved Reliability for Solar PV Applications by C. Dhanamjayulu, T. Girijaprasanna

“…The inverter is tested with linear and nonlinear loads for robustness, and during dynamic loads, inverter is stable and well suited to grid-connected applications. …”
Get full text

Development of a Family of Chaotic Systems with Infinite Equilibria and Its Application for Image Encryption by Xiaofeng Li, Yulong Bai, Weishuan Pan, Di Wang, Yong-Jie Ma

“…Fourth-order autonomous nonlinear differential equations can exhibit chaotic properties. …”
Get full text

A 0.69-mW Subsampling NB-IoT Receiver Employing a Linearized <italic>Q</italic>-Boosted LNA by Hongyu Lu, Ahmed Gharib Gadelkarim, Jiannan Huang, Patrick P. Mercier

“…A direct-coupling derivative superposition technique where low-<inline-formula> <tex-math notation="LaTeX">$V_{t}$ </tex-math></inline-formula> and thick-gate transistors with opposite nonlinear characteristics are combined to improve the measured IIP3 by 7 dB to &#x2212;18 dBm with little NF overhead. …”
Get full text

Asymptotic stability analysis of a fractional epidemic model for Ebola virus disease in Caputo sense by Samson Olaniyi, Furaha M. Chuma, Sulaimon F. Abimbade

“… In this work, a non-integer-order epidemic system modelling the nonlinear dynamics of Ebola virus disease is formulated in the sense of Caputo-ractional derivative. …”
Get full text

Predicting Shear Capacity of FRP-Reinforced Concrete Beams without Stirrups by Artificial Neural Networks, Gene Expression Programming, and Regression Analysis by Ghazi Bahroz Jumaa, Ali Ramadhan Yousif

“…This paper proposes three new prediction models, utilizing artificial neural networks (ANNs) and gene expression programming (GEP), as a recently developed artificial intelligent techniques, and nonlinear regression analysis (NLR) as a conventional technique. …”
Get full text

SOR-Like New Iterative Method for Solving the Epidemic Model and the Prey and Predator Problem by Atika Radid, Karim Rhofir

“…The proposed method is not limited to these two problems but can be applicable to a wide range of systems of nonlinear functional problem. The results, for different values of ω, show that we found some known methods and our method compared to methods using the calculation of special polynomials and derivatives like the Adomian decomposition method (ADM), the calculation of the Lagrange multiplier as in the variational iterative method (VIM), or the construction of a homotopy as in the homotopy perturbation method (HPM) has several advantages, such as very effective and very simple to implement. …”
Get full text

TIE‐GCM ROPE ‐ Dimensionality Reduction: Part I by Piyush M. Mehta, Richard J. Licata

“…This work focuses on the dimensionality reduction step of the ROPE development process and addresses three limitations of the proof‐of‐concept: (a) extending the altitude upper boundary from 450 km to nearly 1000 km, (b) employing deep learning for nonlinear dimensionality reduction over principal component analysis (PCA) for improved performance during storm periods, and (c) maintaining the spatial resolution of the physical TIE‐GCM model, without down‐sampling, to preserve the spatial scales and variations. …”
Get full text

An Integrative Approach to Understand the Climatic-Hydrological Process: A Case Study of Yarkand River, Northwest China by Jianhua Xu, Yiwen Xu, Chunan Song

“…AR, AAT, and AP basically present linear trends at 16-year and 32-year scales, but they show nonlinear fluctuations at 2-year and 4-year scales. (3) The relationship between AR with AAT and AP was simulated by the multiple linear regression equation (MLRE) based on wavelet analysis at each time scale. …”
Get full text

A CEEMDAN-Based Entropy Approach Measuring Multiscale Information Flow between Macroeconomic Conditions and Stock Returns of BRICS by Emmanuel Asafo-Adjei, Anokye Mohammed Adam, Peterson Owusu Junior, Patrick Kwashie Akorsu, Clement Lamboi Arthur

“…We model a mixture of asymmetric and nonlinear bidirectional and unidirectional causality between four macroeconomic variables (exchange rate, GDP, global economic policy uncertainty, and relative CPI) and stock returns of BRICS economies in the frequency-domain using the information flow theory. …”
Get full text

Non-linear analysis of masonry infilled steel frame under in-plane loading using Multi Pier method by Mohammad Mosa Ahmadvand, Ahmad Maleki, Masoud Pourbaba

“…The present study introduces a novel method for analyzing masonry infilled steel frames, termed the Multi Pier (MP) approach, which utilizes truss elements exhibiting nonlinear softening behaviors. The basis of the model is to transfer the masonry infilled frame into an assemblage of piers and braces. …”
Get full text

Improved Harmony Search Algorithm to Compute the Underfrequency Load Shedding Parameters by Jose Miguel Riquelme-Dominguez, Martha N. Acosta, Francisco Gonzalez-Longatt, Manuel A. Andrade, Ernesto Vazquez, José Luis Rueda

“…Defining settings of a conventional UFLS scheme is a very complex problem due to the nonlinear nature of the frequency response, and the size of the problem is vast because of the number of UF-relays spread on the power system. …”
Get full text

RESEARCH ON DYNAMIC PROPERTY FOR CASTING CRANE IN THE LOAD-LIFTING PROCESS BASE ON THERMO-ELASTIC COUPLING by HUANG Bin, FENG LiXia, XIANG ZaiYu

“…The temperature field of the bridge presents nonlinear variation with the iron melt ladle lifting,that the temperature field of the bridge changes more significantly while the lifting speed faster. …”
Get full text

Machine learning techniques for estimating high–temperature mechanical behavior of high strength steels by C. Yazici, F.J. Domínguez-Gutiérrez

“…The proposed framework was validated against experimental data, demonstrating strong agreement and confirming its effectiveness in capturing complex nonlinear material behavior. This study provides a significant advancement over traditional empirical methods by offering a data-driven approach for predicting HSS performance under elevated temperatures, facilitating the design of safer and more efficient structural components in high-temperature applications.…”
Get full text

Micropolar Couple Stress Nanofluid Flow by Non-Fourier’s-Law Heat Flux Model past a Stretching Sheet by Gosa Gadisa, Tagay Takele, Shibiru Jabessa

“…In this investigation, thermal radiation effect on MHD nonlinear convective micropolar couple stress nanofluid flow by non-Fourier’s-law heat flux model past a stretching sheet with the effects of diffusion-thermo, thermal-diffusion, and first-order chemical reaction rate is reported. …”
Get full text

A Short Turning Strategy for Train Scheduling Optimization in an Urban Rail Transit Line: The Case of Beijing Subway Line 4 by Miao Zhang, Yihui Wang, Shuai Su, Tao Tang, Bin Ning

“…First, we develop a mixed integer nonlinear programming (MINLP) model for the train scheduling, where short turning train services and full-length train services are optimized based on the predefined headway obtained by the passenger demand analysis. …”
Get full text

Asymmetric Effects of Trade Openness and National Income on Government Size in BRICS Countries: New Evidence for Wagner’s Law by Дхиани Мехта, Никундж Патель

“…This study investigates the validity of Wagner’s law and the Compensation Hypothesis in the context of BRICS. Using a panel nonlinear autoregressive distributed lag model on annual panel data from 1999 to 2023, our findings confirm Wagner’s law, showing a positive relationship between economic growth and government size. …”
Get full text