Analysis of Spatiotemporal Variation of NDVI in Pearl River Basin and Its Driving Force Based on Geodetector by WANG Ruiqing, JIANG Xiaohui, NIE Tong

“…On the basis of the yearly normalized difference vegetation index (NDVI) data from 2000 to 2015,climate,topography,vegetation,soil types,and socio-economic indicators are integrated to analyze the spatiotemporal variation characteristics and driving factors of NDVI in the Pearl River Basin with ArcGIS spatial analysis and geographical detectors (Geodetectors).The results indicate that ① NDVI in the Pearl River Basin shows phased growth in interannual variations from 2000 to 2015,and the overall average annual growth rate is 0.005 3,the medium-high vegetation coverage is greatly transformed into high vegetation coverage,which means the medium-highly and highly vegetated areas have complementary correspondence in spatiotemporal variations,and the average vegetation coverage is greatly improved.② The impact of human activities on the change in vegetation coverage in the Pearl River Basin is greater than that of natural factors.The intensity of human activities in the area reflected by the light intensity at night is the most important factor affecting vegetation changes,and the landform type is the main natural factor affecting vegetation coverage in the basin.On an annual scale,there is little correlation between the change in vegetation coverage and meteorological factors.③ The interaction between natural factors and socio-economic factors is mainly two-factor enhancement,and the two-factor enhancement of the landform type and light intensity at night makes a contribution of 58.9% to the q value;the nonlinear enhancement interaction is mainly between natural factors.By analyzing the range or type of various natural factors suitable for vegetation growth in the study area,this research provides a scientific basis for further promoting the soil and water conservation and ecological protection of the Pearl River Basin.…”
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Playability of self-sustained musical instrument models: statistical approaches by Pégeot Martin, Colinot Tom, Doc Jean-Baptiste, Fréour Vincent, Vergez Christophe

“…Self-sustained musical instruments, such as wind or bowed string instruments, are complex nonlinear systems. They admit a wide variety of regimes, which sometimes coexist for certain values of the control parameters. …”
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Unconfined Compressive Strength Prediction of Rocks Using a Novel Hybrid Machine Learning Algorithm by Rafiqul Islam, Md. Arif Hossain

“…Unlike traditional UCS prediction methods that often struggle with slow convergence and local minima entrapment, this approach leverages the nonlinear modeling capabilities of SVR and enhances its performance through advanced optimizers. …”
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Epidemic spread of influenza viruses: The impact of transient populations on disease dynamics by Karen R. Ríos-Soto, Baojun Song, Carlos Castillo-Chavez

“…A metapopulation framework based on a system of nonlinear ordinary differential equations is used to study the transmission dynamics and control of avian diseases. …”
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Experimental Quantification of Local Pressure Loss at a 90° Bend in Low-Pressure Dilute-Phase Pneumatic Conveying of Coarse Particles by Rui Zhu, Chunsheng Luo, Xin Li, Fei Yan

“…Based on the additional pressure theory of Barth, an empirical formula estimating the local pressure loss is obtained using dimensional and nonlinear regression analysis. Summarizing the experiments and literature, the results expound on the local gas flow pressure loss coefficient decreases with increasing Reynolds number, and first decreases and then increases with increasing bending radius ratios from 0.5 to 7. …”
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DYNAMIC CHARACTERISTIC BOUNDARY DOMAIN STRUCTURE ANALYSIS OF A SINGLE-STAGE GEAR SYSTEM IN TWO-PARAMETER PLANE (MT) by TIAN YaPing, ZHANG Feng, YANG JiangHui, KANG JunFeng

“…The analysis shows that the amplitude jump response of the system appears near the resonance frequency. The nonlinear jump also appears at the non-clearance bearing supports due to the effect of the gear backlash. …”
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A linear filter regularization for POD-based reduced-order models of the quasi-geostrophic equations by Girfoglio, Michele, Quaini, Annalisa, Rozza, Gianluigi

“…Our regularization is based on the so-called BV-$\alpha $ model, which modifies the nonlinear term in the QGE and adds a linear differential filter for the vorticity. …”
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A DBN-Based Deep Neural Network Model with Multitask Learning for Online Air Quality Prediction by Jiangeng Li, Xingyang Shao, Rihui Sun

“…In this paper, for the purpose of improve prediction accuracy of air pollutant concentration, a deep neural network model with multitask learning (MTL-DBN-DNN), pretrained by a deep belief network (DBN), is proposed for forecasting of nonlinear systems and tested on the forecast of air quality time series. …”
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Reduction of Structural Vibrations by Passive and Semiactively Controlled Friction Dampers by L. Gaul, J. Becker

“…It is well known that transient simulation of systems with friction and normal contact requires excessive computational power due to the nonlinear constitutive laws and the high contact stiffnesses involved. …”
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The Dose-Response Relationship between Alcohol Consumption and the Risk of Type 2 Diabetes among Asian Men: A Systematic Review and Meta-Analysis of Prospective Cohort Studies by Manman Han

“…High alcohol intake was significantly associated with increased risk of T2D (RR=1.16, 95% CI: 1.04–1.29; Q statistic p=0.326) compared to the lowest category of alcohol intake. Nonlinear association was observed between alcohol consumption and T2D risk in men (p=0.003). …”
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Analytical study on flow of two non-miscible laminar layers of Newtonian fluids in a curved channel with wall slippage by Jafar Hasnain, Nomana Abid

“…The analytical solutions of highly nonlinear mathematical equations are obtained using perturbation series by taking ε(=PrEc)≪1. …”
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Rapid Characterization of Tanshinone Extract Powder by Near Infrared Spectroscopy by Gan Luo, Bing Xu, Xinyuan Shi, Jianyu Li, Shengyun Dai, Yanjiang Qiao

“…Results demonstrated NIR to be a valid and fast process analytical technology tool to simultaneously determine multiple quality attributes of herbal extract powders and indicated that there existed some nonlinear relationship between NIR spectra and physical quality attributes.…”
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A Ship Collision Analysis Program Based on Upper Bound Solutions and Coupled with a Large Rotational Ship Movement Analysis Tool by Hervé Le Sourne, Nicolas Besnard, Cedric Cheylan, Natacha Buannic

“…Some simulation results are compared with results provided by classical nonlinear finite element calculations. Finally, by using the developed analytical tool, which mixes internal and external dynamics, different crushing scenarios including oblique collisions are investigated and the influence of some collision parameters like longitudinal and vertical impact location, impact angle, and struck ship velocity is studied.…”
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Applying Hybrid PSO to Optimize Directional Overcurrent Relay Coordination in Variable Network Topologies by Ming-Ta Yang, An Liu

“…In power systems, determining the values of time dial setting (TDS) and the plug setting (PS) for directional overcurrent relays (DOCRs) is an extremely constrained optimization problem that has been previously described and solved as a nonlinear programming problem. Optimization coordination problems of near-end faults and far-end faults occurring simultaneously in circuits with various topologies, including fixed and variable network topologies, are considered in this study. …”
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A Coupled Novel Green Element and Embedded Discrete Fracture Model for Simulation of Fluid Flow in Fractured Reservoir by Linsong Cheng, Xulin Du, Renyi Cao, Zhikai Wang, Junjie Shi

“…GEM is an excellent advanced algorithm, which can solve nonlinear problems in heterogeneous media. That is also an obvious advantage of GEM against the original boundary element method (BEM). …”
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Horizontal-Vertical-Rocking Coupled Response Analysis of Vertical Seismic Isolated Structure under Near-Fault Earthquakes by Dewen Liu, Yafei Zhang, Sitong Fang, Yang Liu

“…The responses of horizontal-vertical-rocking coupling base-isolated structure including quasizero stiffness (QZS) and vertical damper (VD) subjected to NF horizontal and vertical ground motions are investigated. Nonlinear dynamic analyses are conducted to study the effects of essential parameters such as isolation system eccentricity, static equilibrium position, vertical isolation period, and vertical damping ratio on seismic responses of vertical isolated structure. …”
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Circular thin plates buckling analysis with HRPIM method by Baid Sokayna, Hilali Youssef, Mesmoudi Saïd, Bourihane Oussama

“…This paper aims to introduce a new approach to simulate geometrically nonlinear problems that require shape functions with higher order continuity such as the buckling analysis of circular thin and thick plates based on two theories; Classical plate theory (CPT) and Third order Shear Deformation Theory (TSDT). …”
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Variable-Parameter Impedance Control of Manipulator Based on RBFNN and Gradient Descent by Linshen Li, Fan Wang, Huilin Tang, Yanbing Liang

“…Secondly, the RBFNN, known for its nonlinear fitting capabilities, is employed to identify the system throughout the iterative process. …”
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Deadbeat Control of a Modified Single-Phase Five-Level Photovoltaic Inverter with Reduced Number of Switches by Mohsen Ghorbanali Afjeh, Mojtaba Babaei, Mohsen Alizadeh Bidgoli, Amir Ahmarinejad

“…This closed-loop inverter is implemented in TMS320f28335 digital signal controller to evaluate the performance of the proposed inverter under nonlinear and linear loads. Simulation and laboratory prototype results show that IEC 62040-3 harmonic constraints is met for the proposed photovoltaic inverter in standalone applications.…”
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Modeling Femtosecond Beam Propagation in Dielectric Hollow-Core Waveguides by Valer Tosa, Ana Maria Mihaela Gherman, Katalin Kovacs, István Tóth

“…The propagation of femtosecond pulses in guided structures is a matter of both fundamental and practical interest in nonlinear optics. In particular, hollow-core waveguides (HCWs) filled with a gas medium are fabricated and used as devices for the generation of attosecond pulses from high-order harmonics. …”
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