Numerical Modeling and GNSS Observations of Ionospheric Depletions Due To a Small‐Lift Launch Vehicle by G. W. Bowden, M. Brown

“…Here we report observations and numerical simulations of the ionospheric depletion due to a Small‐Lift Launch Vehicle. …”
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Used economy market insight: Sailboat industry pricing mechanism and regional effects. by Zhanni Huang, Hansheng Hu, Di Wu

“…Therefore, this article uses the random forest model and XGBoost algorithm to identify core price indicators, and uses an innovative rolling NAR dynamic neural network model to simulate and predict second-hand sailboat price data. …”
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Research on scheduled WLAN MAC protocol with failure retries on RoF-DAS architecture by Zheng GUAN, Lei XIONG, Yao JIA, Min HE, Zhijun YANG

“…Aim to reduce control frames consumption and improve the delay performance,a scheduled gated-service polling access (SGPA) mechanism was proposed,in which the total data packets in the buffer at the polling instant were aggregated into a data set,that was transmitted and acknowledged uniformly.Then,an inner-arrival gated-service polling (IAGP) model was proposed to analyze the quantitative relationship between failure retry mechanism and network access performance of the wireless local area network (WLAN) in RoF-DAS.The failure retry mechanism were modeled as the arrival and service process of inner customers in IAGP.Using the Markov chain and generating function method,the closed-form expressions for the quantitative relationship between delay performance and retrial parameters,such as retry times,and the probability of retransmission,were achieved.The simulation results show that the proposed SGPA can achieve a lower delay than IEEE 802.11,and the theoretical performance evaluation calculated by IAGP are identical with the simulation results,which provides an effective evaluation mechanism for the access performance in RoF-DAS WLAN,with inperfect channel and failure retry mechanism.…”
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Estimating System Reliability Using Neoteric and Median RSS Data for Generalized Exponential Distribution by Amal S. Hassan, Rasha S. Elshaarawy, Ronald Onyango, Heba F. Nagy

“…Based on our simulated results, we found that NRSS-based stress strength reliability estimates are more efficient than MRSS-based stress strength reliability estimates. …”
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Propagation Characteristics and Magnetic Field Distribution of Rotating Magnet-Based Mechanical Antenna in the Air-Seawater-Seabed Three-Layer Medium by S. P. Chen, Q. Zhou, J. Y. Zhang, S. Y. Wang

“…Based on the electromagnetic field simulation software FEKO, the influence of vertical rotation and horizontal rotation of RMBMA on the radiation magnetic field is analyzed. …”
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A security detection approach based on autonomy-oriented user sensor in social recommendation network by Shanshan Wan, Ying Liu

“…Then, AOUSD is first simulated on NetLogo and it is compared with other algorithms based on the Amazon data. …”
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The Physical Modeling Analysis of Fate and Transport of Silver Nanoparticles Dispersed by Water Flow by Achmad Syafiuddin, Salmiati Salmiati, Mohamad Ali Fulazzaky, Dedy Dwi Prastyo, Raj Boopathy, Mu. Naushad

“…The physical model of simulated river to mimic a natural flow of river was proposed to investigate the behaviors of AgNP transport in the river. …”
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DYNAMIC RELIABILITY ANALYSIS OF PHOTOVOLTAIC SUPPORT SYSTEM CONSIDERING MULTIPLE UNCERTAINTIES by ZHONG Wei, YANG HuanHong, MA XiangDong, HUANG LongAn

“…Dynamic reliability analysis method of photovoltaic support system(PSS)was proposed considering the multiple uncertainties.Firstly,the reliability analysis model of PSS was constructed based on the probability density evolution method(PDEM),including the probability conservation equation,basic governing equation and density evolution equation.Then,the finite element analysis model of PSS was built,including the structural stress model,load combination form,and mesh generation algorithm.In simulation,the randomness in load combination and structures were incorporated,in which consists of six basic random parameters and 44 representative systems.The solution efficiency was improved by the joint simulation of PDEM and Abaqus.Results show that stress and displacement are two failure modes of PSS,and the influence of the latter is more obvious.The reliability index under the basic load combination condition is 0.928.As wind speed increases,the structural reliability decreases.In the high⁃speed range larger than 40 m/s,the uncertainty in structure itself will overestimate the reliability level of PSS,which should be paid attention in design.…”
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Numerical Study on the Optimization Design of Photovoltaic/Thermal (PV/T) Collector with Internal Corrugated Channels by Xiangrui Kong, Yuhan Zhang, Jinshun Wu, Song Pan

“…The flow and heat transfer characteristics of the corrugated channels are simulated to identify the factors affecting photovoltaic/thermal (PV/T) system efficiency. …”
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Scatter and Blurring Compensation in Inhomogeneous Media Using a Postprocessing Method by Yan Yan, Gengsheng L. Zeng

“…The compensation is performed using a computer-simulated NCAT phantom and a flanged Jaszczak experimental phantom. …”
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Simplified Method for Calculating the Active Earth Pressure on Retaining Walls of Narrow Backfill Width Based on DEM Analysis by Minghui Yang, Bo Deng

“…The simulations focused on the failure model of the soil when the movement of the wall reaches the value where active earth pressure occurs, and the shape of the sliding surface was captured. …”
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Dynamics Evolution of Credit Risk Contagion in the CRT Market by Tingqiang Chen, Jianmin He, Qunyao Yin

“…The model depicts the dynamics behavior characteristics of evolution of credit risk contagion through numerical simulation. Meanwhile, numerical simulations show that, in the CRT market, the contagion rate of credit risk and the nonlinear resistance among CRT activities participants have some significant effects on the dynamics behaviors of evolution of credit risk contagion. …”
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Humans rationally balance detailed and temporally abstract world models by Ari E. Kahn, Nathaniel D. Daw

“…Abstract How do people model the world’s dynamics to guide mental simulation and evaluate choices? One prominent approach, the Successor Representation (SR), takes advantage of temporal abstraction of future states: by aggregating trajectory predictions over multiple timesteps, the brain can avoid the costs of iterative, multi-step mental simulation. …”
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Molecular dynamics analysis of microstructural deformation mechanisms in single crystal copper undergoing equal channel angular pressing by Ping Yang, Huaming Zhang, Tianxin Luan, Ye Jin

“…This study employs molecular dynamics simulations to analyze the crystal structure, lattice rotation, dislocations, twinning, shear strain, and volumetric strain in three copper workpieces during the equal channel angular pressing (ECAP) process. …”
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EVALUATION OF DATA COLLECTION TREE ROUTING PROTOCOLS FOR WIRELESS SENSOR NETWORKS by Do Huy Khoi

“…This paper focuses on the simulation and evaluation of data collection routing protocols in WSNs, specifically the Collection Tree Protocol (CTP) in mobile environments using the Contiki operating system and the Cooja simulator. …”
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Analysis of Natural Characteristic and Loci Veering / Crossing of Double Helical Planetary Gear Train by Liu Zhenzhou, Zhang Jun

“…The conclusions are then verified by numerical simulation of an example system. The present research can accurately forecast natural frequency and the point of modal and modal energy mutation,a fundamental theoretical basis for the parameter optimization,noise reduction and vibration suppression for the DHPGT is provided.…”
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A New Type of Tri-Input TFET with T-Shaped Channel Structure Exhibiting Three-Input Majority Logic Behavior by Ye Hao, Jiang Zhidi, Hu Jianping

“…TCAD simulation results verify the expected characteristics of the proposed Ti-TFETs in different working states. …”
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Three-dimensional fractal model of contact stress of cylinder joint by WANG Xue, LI XiaoPeng, XU JinChi

“…In order to study the carrying capacity of the cylinder joint in the mechanical structure, based on Hertz contact theory and combined with the modified three-dimensional fractal theory, the three-dimensional fractal theory was applied to simulate the actual engineering joint surface, and a three-dimensional fractal model of the contact stress of the cylinder joint was established under the comprehensive consideration of the macroscopic characteristics and the microscopic morphology factors. …”
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SIMLATION OF 3D RESIDUAL STRESS FIELD OF ULTRASONIC SURFACE ROLLING BY DYNAMIC FINITE ELEMENT ANALYSIS by ZHAO YunCai, WEN ChunBin

“…The present paper presents a numerical approach to investigate the surface layer residual stress after ultrasonic surface rolling process（USRP）,which is a severe plastic deformation process involving complex static extrusion and dynamic impact.According to the technological principle of USRP developed finite element model,assessment of meshing accuracy as well as definition of loading condition.As supplied 304 Austenitic Stainless Steel disc was subjected to ultrasonic surface rolling for validation of FEM,then simulates the processing of ultrasonic surface rolling,analysis of the residual stress field distribution characteristics and the influence of processing parameters on the rule.From the simulation results it can be seen that the surface of the material has a uniform distribution of residual compressive stress,with the increase of depth,the residual stress has a compressive stress peak and a smaller peak of the tensile stress and finally reduced to 0.The influence of machining parameters on the magnitude and depth of residual stress is different,the static pressure,the coverage rate and the number of processing have great influence on the amplitude and the amplitude is small.…”
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Single photodiode-based direct detection for Twin-SSB-QPSK signal in optical fiber communication systems by ZHANG Hongbo, LIU Jiao, LING Weiwei, ZHANG Min, WAN Feng, CAI Ju

“…The simulation results indicate that the proposed scheme does not introduce additional power penalties while reducing the system device requirements and deployment costs.…”
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