Two-Step Deep Learning Approach for Estimating Vegetation Backscatter: A Case Study of Soybean Fields by Dong Zhu, Peng Zhao, Qiang Zhao, Qingliang Li, Jinpeng Zhang, Lixia Yang

“…Deep learning (DL) works as a powerful tool to analyze complex data and approximate the nonlinear relationship between variables, thus exhibiting potential applications in microwave scattering problems. …”
Get full text

Discrete Fractional-Order Modeling of Recurrent Childhood Diseases Using the Caputo Difference Operator by Yasir A. Madani, Zeeshan Ali, Mohammed Rabih, Amer Alsulami, Nidal H. E. Eljaneid, Khaled Aldwoah, Blgys Muflh

“…Ulam stability is demonstrated using nonlinear functional analysis. Sensitivity analysis is conducted based on the variation of each parameter, and the basic reproduction number <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>(</mo><msub><mi mathvariant="script">R</mi><mn>0</mn></msub><mo>)</mo></mrow></semantics></math></inline-formula> is introduced to assess local stability at two equilibrium points. …”
Get full text

Association between the neutrophil-to-high-density lipoprotein cholesterol ratio with kidney stone risk: a cross-sectional study by Yuan-Zhuo Du, Jia-Qing Yang, Ji-Ming Yao, Chi-Teng Zhang, Yi-Fu Liu

“…Participants in the highest tertile of NHR had a 34% increased chance of kidney stone development compared to those in the lowest tertile. A nonlinear connection between NHR and kidney stone risk was identified using restricted cubic spline (RCS) regression models. …”
Get full text

Analysis of mechanical properties and energy evolution mechanism of frozen calcareous clay under multi-factor interaction by Jihao Feng, Hao Shi, Chuanxin Rong, Lei Song, Wei Long, Jianpeng Liu, Di Wei, Gangjian An

“…In this study, a four-factor, four-level orthogonal test was devised, taking into account temperature, confining pressure, dry density, and water content. The complex nonlinear curvilinear relationship between deviatoric stress, volume strain, and axial strain of frozen calcareous clay under different interaction levels was analyzed. …”
Get full text

MHD effect on peristaltic motion of Williamson fluid via porous channel with suction and injection by K. Chakradhar, K. Nandagopal, Vishnudasu Prashanthi, A. Parandhama, T. Somaiah, B.V. Sai Thrinath, Nainaru Tarakaramu, Ghulam Rasool, Dilsora Abduvalieva

“…The study aims to evaluate key factors affecting pressure and frictional forces in the porous channel, including Hartmann number (HN), suction and injection parameters, and the rheological properties of Williamson fluid. Nonlinear differential equations governing the flow are solved analytically using perturbation techniques. …”
Get full text

NARX Neural Network Derivations of the Outer Boundary Radiation Belt Electron Flux by D. A. Landis, A. A. Saikin, I. Zhelavskaya, A. Y. Drozdov, N. Aseev, Y. Y. Shprits, M. F. Pfitzer, A. G. Smirnov

“…GOES‐15 measurements of 0.8 MeV electrons were used to train a Nonlinear Autoregressive with Exogenous input (NARX) neural network for both modeling GOES‐15 flux values and an upper boundary condition scaling factor (BF). …”
Get full text

Molecular structure, UV–Visible spectra and other molecular properties of (E)-2-(2-hydroxy-5-methoxybenzylidene)hydrazinecarbothioamide and its n-methyl variant by using DFT method... by K. Srishailam, L. Ravindranath, Gaddam. Ramesh, D. Praveena, Sunil kumar V, Danikonda.Suresh Kumar, S. Muthu, G.Ramana Rao

“…For the two compounds under investigation, specific global reactivity descriptors were estimated with the help of frontier molecular orbital (FMO) analysis to understand the origin of UV–Vis spectra. Nonlinear optical (NLO) profile, for each of the two molecules, was computed, with in the frame work of the DFT/B3LYP/6–311++G(d,p) formalism to determine their utility for NLO applications. …”
Get full text

Impact of nanoparticles shapes and fuzzy volume fraction on Al2O3 – H2O nanofluid flow past an unsteady expandable surface by Adnan Saeed Butt, Naveed Yaqoob, Sameea Akbar, Gul M. Shaikh, Adeeba Farhat, Fouzia Amir, Mohamed R. Ali

“…The goal is to simplify the nonlinear partial differential equations (PDEs) through appropriate transformations, converting them into ordinary differential equations (ODEs). …”
Get full text

Narrow Linewidth All-Optical Microwave Oscillator Based on Torsional Radial Acoustic Modes of Single-Mode Fiber by Wen Wang, Wenjun He, Xinyue Fang, Yi Liu, Yajun You, Mingxing Li, Lei Yu, Qing Yan, Yafei Hou, Jian He, Xiujian Chou

“…The main ring cavity provides forward stimulated Brillouin scattering gain and utilizes a nonlinear polarization rotation effect to achieve TR_2,7 mode locking. …”
Get full text

Association between 24-hour urine volume and 28-day intensive care unit mortality in sepsis patients: a multi-center retrospective cohort study by Yuzhan Lin, Weiguo Lin, Cheng Fu, Ruixue Sun, WeiLi Hong, Xinglin Chen, Shaorong Yan

“…In the fully adjusted model, each 50 mL increase in 24-hour urine volume significantly reduced mortality risk by 1% (OR = 0.99, 95% CI = 0.98–0.99, P &lt; 0.001). A nonlinear dose-response relationship was observed, with an inflection point at ~1,663.5 ml. …”
Get full text

The impact of family members on aging persons’ technology use intentions by Freek Van Baelen, Melissa De Regge, Bart Larivière, Katrien Verleye, Kristof Eeckloo

“…RSA is often employed to understand complex, nonlinear interactions within a data set. It was investigated how the level of fit (when both the aging person and his or her family caregiver hold similar beliefs about the technological capabilities of the aging person) and the direction of misfit (whether the abilities of the aging person are greater or worse than the family caregiver thinks) shape the aging person's intention to use healthcare technologies. …”
Get full text

Propagation Laws of Blasting Seismic Waves in Weak Rock Mass: A Case Study of Muzhailing Tunnel by Lijun Chen, Jianxun Chen, Yanbin Luo, Yalong Guo, Yongjun Mu, Daochuan Zhong, Weiwei Liu, Tielun Yang, Weixiang Chen

“…In order to study the propagation laws of blasting vibration waves in weak rock tunnels, the longitudinal and circumferential blasting vibration tests in Muzhailing Tunnel were carried out, and the measured data were analyzed and studied using the methods of Sadov’s nonlinear regression, Fourier transform, and Hilbert–Huang transform (HHT) to provide a reference for the optimization of blasting design of Muzhailing Tunnel or similar weak rock tunnels. …”
Get full text

Limited data based kinetic modeling and optimization of propionic acid synthesis over supported Rh/C catalyst by László Balogh, Jenő Bódis, Botond Szilágyi, Ágnes Bárkányi, Attila Egedy

“…The study presents in the aforedescribed spirit, the synthesis of propionic acid, where the various goals are optimally realized by unleashing the predictive power of nonlinear process model. A method for synthesizing propionic acid is through the heterogeneous catalytic reaction route between ethylene gas, carbon monoxide, and water. …”
Get full text

Safety assessment on girth welds of large-diameter X80 pipelines in water network area by Yuqing LIU, Zhenyong ZHANG, Shengsi WU, Beilei JI, Hong ZHANG, Xiaoben LIU

“…In order to ensure the intrinsic safety of the pipeline, a nonlinear finite element method was adopted to establish a numerical calculation model for the axial stress and strain of the pipeline under sudden settlement of soft soil based on the X80 pipeline with a diameter of 1 422 mm in the water network area, and thus the influence of different settlement displacements of soft soil on the size and distribution of the axial load of pipeline under the most unfavorable sudden displacement condition was studied. …”
Get full text

Magnetohydrodynamic Peristaltic Propulsion of Casson Nanofluids With Slip Effects Over Heterogeneous Rough Channel by Hanumesh Vaidya, Fateh Mebarek‐Oudina, Rakesh Kumar, C. Rajashekhar, Kerehalli Vinayaka Prasad, Sangeeta Kalal, Kottakkaran Sooppy Nisar

“…A novel rough non‐uniform model is effectively governed by a set of nonlinear coupled governing partial differential equations, which are simplified under long wavelength and creeping flow approximations. …”
Get full text

SSVEP Enhancement in Mixed Reality Environment for Brain&#x2013;Computer Interfaces by Jieyu Wu, Feng He, Xiaolin Xiao, Runyuan Gao, Lin Meng, Xiuyun Liu, Minpeng Xu, Dong Ming

“…The results of an offline experiment showed that the background and stimulus colors had a significant interaction effect that can impact system performance. A possible nonlinear relationship between CCR value and SSVEP detection accuracy exists. …”
Get full text

Adsorptive Removal of Malachite Green Dye onto Coal-Associated Soil and Conditions Optimization by T. R. Sundararaman, A. Saravanan, P. Senthil Kumar, M. Millicent Mabel, R. V. Hemavathy, S. Karishma, S. Jeevanantham, R. Hemavathi, A. Ishwariya, S. Kowsalya

“…The adsorption isotherm was studied with four different isotherm models and results showed that the Freundlich isotherm model gave the best fit than the other nonlinear models to designate the isotherm behaviours with R2 value of 0.9568, and the maximum adsorption capacity of coal-associated soil for MG dye adsorption is 89.97 mg/g. …”
Get full text

A Novel Model for Predicting the Well Production in High-Sulfur-Content Gas Reservoirs by Chunmei Zou, Xiaodong Wang, Jinghong Hu, Yang Lv, Bo Fang, Yuan Zhang

“…The model can handle the influence of nonlinear parameters caused by sulfur deposition, which allows accurate calculations and provides guidance for the development of fractured horizontal wells in gas reservoirs with high sulfur content.…”
Get full text

Reconstruction of U.S. Regional-Scale Soybean SIF Based on MODIS Data and BP Neural Network by YAO Jianen, LIU Haiqiu, YANG Man, FENG Jinying, CHEN Xiu, ZHANG Peipei

“…Through the activation functions in the BP neural network, it enhanced the understanding of the complex nonlinear relationships between the original SIF data and these MODIS products. …”
Get full text

The influence of menopause age on gynecologic cancer risk: a comprehensive analysis using NHANES data by Yiliminuer Abulajiang, Tao Liu, Ming Wang, Abidan Abulai, Yumei Wu

“…Additionally, we employed RCS models to evaluate nonlinear relationships between menopausal age and gynecologic cancer risk.ResultsOur findings indicate a significant inverse association between menopausal age and the risk of gynecologic cancers. …”
Get full text