Small face detection based on improved YOLOv5s by ZHOU Lifang, HU Zhen, LIU Bo

“…Finally, EIoU was utilized as the loss function, which directly reduced the width and height discrepancies between predicted and actual bounding boxes, and FReLU was utilized as the activation function, which could enhance the nonlinear expressiveness of feature maps to improve the precision and stability of small face detection. …”
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Dynamic Response Analysis of an Asymmetric Coupled Vehicle-Track System Generated by Voided Elastic Two-Block Sleeper by Zhenxing He, Xinwen Yang

“…The pads under the rails and the rubber boots under the sleepers provide greater vertical and lateral elasticity for the track. The Hertz nonlinear elastic contact theory is used to calculate the normal wheel/rail force. …”
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OPTIMUM MATCHING OF KINEMATIC PARAMETERS OF CUTTING COAL GANGUE SHEARE by DING Fei, LI BinBin, ZHOU WenChao

“…Based on the coal rock material nonlinear theory and rigid flexible coupling multi-body system dynamics theory,the optimal matching of the parameters of shearer was studied.Using Ansys/LS-DYNA software, the coupling simulation model was established for shearer drum with gangue coal, the coal extraction process run down by three to the spiral drum three to force and torque, the volume of coal and rock was cut out.The relationship between the motion parameters and load fluctuation coefficient, cut down the coal volume, cutter safety coefficient, cutting energy consumption, coal loading rate and productivity were analyzed using these results; Using the MATLAB optimization toolbox, the load fluctuation coefficient, cut down the coal volume, cutter safety coefficient, cutting ratio energy consumption, coal loading rate and productivity as the goal function, the multi-objective optimization equation is established for motion parameters of shearer spiral drum. …”
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Gear Defect Modeling of a Multiple-Stage Gear Train by Andrew Sommer, Jim Meagher, Xi Wu

“…This study demonstrates the transient and steady state dynamic loading on teeth within a two-stage gear transmission arising from backlash and geometric manufacturing errors by utilizing a nonlinear multibody dynamics software model. Backlash between gear teeth which is essential to provide better lubrication on tooth surfaces and to eliminate interference is included as a defect and a necessary part of transmission design. …”
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Thermodynamic Phase Transition of Generalized Ayon-Beato Garcia Black Holes by Elham Ghasemi, Hossein Ghaffarnejad

“…In this work, we study thermodynamics of generalized Ayon-Beato and Garcia (ABG) black hole metric which contains three parameters named as mass m, magnetic charge q, and dimensionless coupling constant of nonlinear electrodynamics interacting field γ. We showed that central regions of this black hole behaves as dS (AdS) vacuum space by setting q<2mq>2m and in the case q=2m reaches to a flat Minkowski space. …”
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Site Specific Stem Volume Models for Pinus patula and Pinus oocarpa by Herbert Malata, Elisha S. Ngulube, Edward Missanjo

“…Various predictors including diameter at breast height (dbh) and height (ht) were run against total stem volume using a nonlinear mixed-effects modelling approach. The results indicate that the developed site specific models showed a significant association between total stem volume and the predictors (dbh and ht). …”
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Dynamics Characteristic Analysis of Involute Gear with Asymmetric Tooth Considering the Influence of Time-varying Stiffness and Backlash by Qi Chen, Zhigang Yao, Yadong Wang, Yanming Wu

“…Moreover， the relationship between the average mesh stiffness and dynamics performance are nonlinear. That is， with the increase of the average meshing stiffness， the dynamics characteristics becomes better from worse， but the average meshing stiffness continues to increase and then the dynamic characteristics become inferior， so the optimal value of the average meshing stiffness should be determined according to the actual working conditions. …”
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Experimental Study on Compaction Characteristics and Mechanical Behavior of Crushed Rock Masses by Xiaolou Chi, Qiang Fu, Ke Yang

“…Further, we carried out an orthogonal experiment and built a multivariate nonlinear regression model to quantitatively characterize the combined influence of these factors on the compaction characteristics of the crushed rock masses and the mechanical behavior of the consolidated bodies.…”
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Fatigue Strength Analysis of the High-speed Diaphragm Sun-gear Shaft by Xiaopeng Wang, Shijun Liu, Huijun Yao, Wenbo Xu

“…Result shows that strength of sun-gear shaft is meet the requirements under single or multi-coupling loads within the range of working parameters. There is a nonlinear relationship between speed and stress, the great stress is appeared at the alveolar roots, its proportion of stress occupied increases alternately with coupling load. …”
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A quasi-lumped model for the peripheral distortion of the arterial pulse by Panagiotes A. Voltairas, Antonios Charalambopoulos, Dimitrios I. Fotiadis, Lambros K. Michalis

“…Both of them are expounded in the literature and included in our analysis. The nonlinearities of inertial effects are usually taken into account in numerical simulations, based on Navier-Stokes like equations. …”
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A Location-Inventory-Routing Problem in Forward and Reverse Logistics Network Design by Qunli Yuchi, Zhengwen He, Zhen Yang, Nengmin Wang

“…Our objective is to minimize the total costs of manufacturing and remanufacturing goods, building DCs, shipping goods (new or recovered) between the manufacturer and opened DCs, and distributing new or recovered goods to customers and ordering and storage costs of goods. A nonlinear integer programming model is proposed to formulate the LIRP-FRL. …”
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Ultimate Pullout Capacity of a Square Plate Anchor in Clay with an Interbedded Stiff Layer by Tugen Feng, Jingyao Zong, Wei Jiang, Jian Zhang, Jian Song

“…Three-dimensional nonlinear numerical analysis is carried out to determine the ultimate pullout capacity of a square plate anchor in layered clay using the large finite element analysis software ABAQUS. …”
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Modeling and Application of Process Damping in Milling of Thin-Walled Workpiece Made of Titanium Alloy by Xin Li, Wei Zhao, Liang Li, Ning He, ShengWei Chi

“…The paper presents one nonlinear dynamic model considering process damping for milling of thin-walled workpiece made of titanium alloy and designs antivibration clearance angle to suppress chatter based on the model. …”
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Estimating Compressive Strength of High Performance Concrete with Gaussian Process Regression Model by Nhat-Duc Hoang, Anh-Duc Pham, Quoc-Lam Nguyen, Quang-Nhat Pham

“…This machine learning approach is utilized to establish the nonlinear functional mapping between the compressive strength and HPC ingredients. …”
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Optimization of an On-Grid Inverter for PV Applications Using Genetic Algorithms by Anis Ammous, Abdulrahman Alahdal, Kaiçar Ammous

“…A new approach to the optimal design of power inverters for on-grid photovoltaic systems that uses genetic algorithms (GA) is provided in this article. The nonlinear average model is adopted to model the conversion stage in order to accurately evaluate and quickly estimate the power losses of the power devices. …”
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Comparison of Three Methods for Wind Turbine Capacity Factor Estimation by Y. Ditkovich, A. Kuperman

“…The third “approximate” approach, valid in case of Rayleigh winds only, employs a nonlinear approximation of the capacity factor versus average wind speed curve, only requiring rated power and rotor diameter of the turbine. …”
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Effect of Near-Fault Pulsed Ground Motions on Seismic Response and Seismic Performance to Tunnel Structures by Xiancheng Mei, Qian Sheng, Zhen Cui

“…Therefore, a recently developed velocity pulse equivalent model is proposed to synthesize the artificial near-fault pulsed ground motion for the seismic response behavior of the tunnel structure. A newly proposed nonlinear dynamic time history methodology, the incremental dynamic analysis method, is introduced into the analysis of seismic performance and fragility for tunnel structures. …”
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Spectral Content Effects Study in Non-Contact Resonance Ultrasound Spectroscopy by Muhammad Tayyib, Linas Svilainis

“…Experimental measurements were conducted using a thin polycarbonate sample using two standard spread-spectrum signals, linear and nonlinear frequency modulation, together with six optimized APWP signals. …”
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FE Analysis of Dynamic Response of Aircraft Windshield against Bird Impact by Uzair Ahmed Dar, Weihong Zhang, Yingjie Xu

“…Numerical simulations were performed by developing nonlinear FE model in commercially available explicit FE solver AUTODYN. …”
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Investigation into forces on offshore piles with constant and linearly varying diameters using CFD and extended Morison equation under separate wave and current loadings by Kemal Bal, Deniz Bayraktar Bural

“…In contrast, the extended Morison equation, incorporating nonlinear effects and variable cross-sections, provides significantly more accurate force predictions, particularly in the diffraction zone compared to the numerical simulations. …”
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