Model analysis for an HIV infectious disease using elasticity and sensitivity techniques by Honar J. Hamad, Sarbaz H. A. Khoshnaw, Muhammad Shahzad

“…The model includes a class of nonlinear ordinary differential equations, and has both infection-free and endemic infection equilibrium points. …”
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Vibration mechanism study based on coupled dynamic model for TBM main drive system by Wenjun Xu, Hanyang Wu, Junzhou Huo, Dongyun Wang

“…In this paper, multi-degree-of-freedom coupled dynamics model of the main drive system containing the cutterhead, gear drive, shield, and propulsion system was established, taking bearing and drive gear nonlinear contact forces, uncertain load into account. …”
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Collision Avoidance in Circular Motion of a Fixed-Wing Drone Formation Based on Rotational Modification of Artificial Potential Field by Tagir Muslimov

“…These models have both full nonlinear dynamics and implementation of tuned autopilots stabilizing angular and trajectory motion.…”
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A Strain Rate-Dependent Damage Evolution Model for Concrete Based on Experimental Results by Peng Wan, Xiaoyan Lei, Bin Xu, Hui Song

“…In this paper, a strain rate-sensitive isotropic damage model for plain concrete is proposed to describe its nonlinear behavior. Cyclic uniaxial compression tests were conducted on concrete samples at three strain rates of 10−3s−1, 10−4s−1, and 10−5s−1, respectively, and ultrasonic wave measurements were made at specified strain values during the loading progress. …”
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Assessing the Relationship between COVID-19, Air Quality, and Meteorological Variables: A Case Study of Dhaka City in Bangladesh by Md Sariful Islam, Mizanur Rahman, Tanmoy Roy Tusher, Shimul Roy, Mohammad Arfar Razi

“…Additionally, the GAM model results showed a significant nonlinear association among daily COVID-19 cases and meteorology and air quality variables on different lag days. …”
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Modelling Hollow Microneedle-Mediated Drug Delivery in Skin Considering Drug Binding by Tanmoy Bhuimali, Sarifuddin, Diganta Bhusan Das, Prashanta Kumar Mandal

“…<b>Conclusions:</b> The novelty of this study includes verapamil metabolism in two-dimensional viscoelastic irregular viable skin and the nonlinear, specific, saturable, and reversible binding of verapamil in the tissue compartment. …”
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Modulation of Inflammatory Reactions by Low-Dose Ionizing Radiation: Cytokine Release of Murine Endothelial Cells Is Dependent on Culture Conditions by Sabine Schröder, Stephan Kriesen, Daniel Paape, Guido Hildebrandt, Katrin Manda

“…Cytokine concentrations were dependent on culture condition, IR dose, time point after IR, and EC origin. IR caused nonlinear dose-dependent effects on secretion of the proinflammatory cytokines KC, MCP-1, and RANTES. …”
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Time-Optimal Trajectory Planning along Parametric Polynomial Lane-Change Curves with Bounded Velocity and Acceleration: Simulations for a Unicycle Based on Numerical Integration by Chien-Sheng Wu, Zih-Yun Chiu, Jing-Sin Liu

“…This could provide a reference for on-road lane-change trajectory planning along a given path other than parametric polynomials for significantly more complex, complete higher-dimensional highly nonlinear dynamic model of autonomous ground vehicle considering aerodynamic forces, tire and friction forces of tire-ground interaction, and terrain topology in real-world.…”
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Modeling and Seismic Performance Analysis of Grid Shear Walls by Weijing Zhang, Caiwang Li, Xiao Chu

“…In this paper, based on an earthquake engineering simulation open system (OpenSees), a new modeling approach for grid shear walls is proposed, and nonlinear analysis of two grid walls with different grid sizes under cyclic load is carried out. …”
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Predicting Bank Operational Efficiency Using Machine Learning Algorithm: Comparative Study of Decision Tree, Random Forest, and Neural Networks by Peter Appiahene, Yaw Marfo Missah, Ussiph Najim

“…Machine learning algorithms have also been viewed as a good tool to estimate various nonparametric and nonlinear problems. This paper presents a combined DEA with three machine learning approaches in evaluating bank efficiency and performance using 444 Ghanaian bank branches, Decision Making Units (DMUs). …”
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INTERNATIONAL RELATIONS AND DIPLOMATIC SERVICE: RETROSPECTIVE ANALYSIS AND PROSPECTS OF THE NEW WORLD ORDER by E. V. Ohotskii

“…The author focuses readers attention on the regularities of formation, development and peculiarities of legal regulation of international relations, considers these relations as an ongoing, highly controversial and multidirectional developing process of the formation of the world system of States and international relations, explores the driving forces, events and phenomena, who had in his time, and many still have a decisive influence on international policy the leading powers of the world in the framework of nonlinear processes of globalization and the current, seriously flawed by today's standards, world order and system of international law. …”
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Effect of friction on levelling of the maxillary canine with NiTi superelastic wire - an in silico experiment using a finite element method by Rikou Miyawaki, Yukiko Yokoi

“…The canine, alveolar bone, and bracket were rigid bodies, while the periodontal ligament (PDL) was a nonlinear elastic material. Kinetic friction was caused by contact forces acting on the wire and the bracket slot. …”
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The Transformation and Leachability of Fly Ash/Cement Waste Forms Subjected to the Simultaneous Effect of Heat and Chemistry by Zhao Zheng, Hua Wen, Yuxiang Li, Min Qin, Yao Wang

“…The relationship of apparent diffusion coefficient between Sr2+ and Ca2+ was quadratic nonlinear, while the relationship between Cs+ and Ca2+ showed a linear relationship. …”
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Stagnation Point Flow of CoFe2O4/TiO2-H2O-Casson Nanofluid past a Slippery Stretching/Shrinking Cylindrical Surface in a Darcy–Forchheimer Porous Medium by Kifle Adula Duguma, Oluwole Daniel Makinde, Lemi Guta Enyadene

“…This paper examines the combined effects of Darcy–Forchheimer porous medium-resistant heating and viscous dissipation on stagnation point flow of a Casson nanofluid (CoFe2O4-H2O and TiO2-H2O) towards a convectively heated slippery stretching/shrinking cylindrical surface in a porous medium. The governing nonlinear model equations are obtained, analysed, and tackled numerically via the shooting technique with the Runge–Kutta–Fehlberg integration scheme. …”
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Dynamic Model and Dynamic Response of Automobile Dual-Mass Flywheel with Bifilar-Type Centrifugal Pendulum Vibration Absorber by Lei Chen, Jianming Yuan, Hang Cai, Jinmin Hu

“…Involving the moment of inertia of the centrifugal pendulum, the model considers the nonlinearities of DMF and bifilar CPVA. Afterward, the dynamic model of the automobile power transmission system equipped with the DMF with bifilar-type CPVA is built, and the dynamic responses of the system are investigated under idling and driving conditions. …”
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Mathematical Modeling of Wax Deposition in Field-Scale Crude Oil Pipeline Systems by Francis Oketch Ochieng, Mathew Ngugi Kinyanjui, Jeconia Okelo Abonyo, Phineas Roy Kiogora

“…The novelty of this work is to develop a mathematical model that incorporates water-in-oil emulsions, wax precipitation kinetics, molecular diffusion, and shear dispersion to enable accurate predictions of both the wax deposit growth rate and aging of the deposit. The coupled nonlinear partial differential equations governing the flow are discretized in time by a second-order semi-implicit time discretization scheme based on the Adams-Bashforth and Crank-Nicolson methods, which completely decouples the computation of the governing equations. …”
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Asymptotic analysis of mathematical model describing a new treatment of breast cancer using AZD9496 and palbociclib by Ophir Nave, Ophir Nave

“…The mathematical model that described the interaction between the cancer cells, the treatment, and the immune system cells includes a system of nonlinear ordinary differential equations of the firs order. …”
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Enhancing Buck-Boost Converter Efficiency and Dynamic Responses with Sliding Mode Control Technique by Salah Hilo Mohammed Al-Attwani, Mustafa Teke, Ethar Sulaiman Yaseen Yaseen, Enes Bektaş, Nurettin Gökşenli

“…The research focuses on a sliding mode control approach to overcome the challenges of nonlinear dynamics and susceptibility to external disturbances. …”
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Robust Prediction of Healthcare Inflation Rate With Statistical and AI Methods in Iran by Mohammad Javad Shaibani, Ali Akbar Fazaeli

“…Using monthly time series data of HCIR in Iran, we developed various forecasting techniques based on classical smoothing methods, decomposition ETS (error, trend, and seasonality) approaches, autoregressive (AR) integrated moving average (ARIMA), seasonal ARIMA (SARIMA), and a multilayer nonlinear AR artificial neural network (NARANN) with several training algorithms including Bayesian regularization (BR), Levenberg–Marquardt (LM), scaled conjugate gradient (SCG), Broyden–Fletcher–Goldfarb–Shanno (BFGS) quasi-Newton, conjugate gradient with Powell–Beale restarts (CGB), conjugate gradient with Fletcher–Reeves updates (CGF), and resilient propagation (RPROP) algorithms. …”
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Analysis of Surrounding Rock Pressure of Deep Buried Tunnel considering the Influence of Seepage by Qingchen Yao, Yukun Ma, Zongyang Xiao, Zudi Zhang, Yaxin Lu, Chenyang Liu

“…Based on the elastic-plastic solution, the nonlinear elastic-plastic solution of the interaction between surrounding rock and lining structure considering the effect of seepage force is proposed, and the radius of surrounding rock plastic zone is obtained. …”
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