Research on Soil Cutting with a Flat Cutter Using a Simulation Model by Asset Altynbayev, Alexandr Ganyukov

“…The research aims to develop an algorithm for modelling the process of cutting an infinite volume of soil with a flat cutter in the Abaqus software package. …”
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Dynamic Response of Doubly-Curved Shallow Shells to Periodic External Action by Alexey A. Semenov

“…A mathematical model is used based on the Timoshenko - Reissner hypotheses, taking into account transverse shears, geometric nonlinearity and rotational inertia. The calculation algorithm is based on the method of L.V. Kantorovich and the Rosenbrock method for solving rigid ODE systems. …”
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DAMAGE IDENTIFICATION METHOD BASED KRIGING MODEL by MA JingJing, YIN Hong, PENG ZhenRui, DONG KangLi

“…Sample points were chosen based on Latin hypercube sampling,and Kriging model was built using acceleration frequency response functions corresponding to the damage parameters;then,Kriging model with good precision was used to replace the finite element model to participate in the optimization process. Cuckoo algorithm was used to obtain the damage parameters,where the objective function with the minimum frequency response deviation was constructed. …”
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Study on Time-varying Friction Excitation and Meshing Efficiency of Helical Gears by Zhengbing Wang, Zhongming Liu, Lubing Shi, Xiaodan Huang, Xuefei Li

“…Based on the variation law of helical gear time-varying contact line length， an analytical algorithm of helical gear friction and friction torque is deduced. …”
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Research on High-Speed Railway Communication Strategy Based on LIFI Technology by Tingting Chen, Weiwei Hu

“…Moreover, this paper studies the access point allocation problem in indoor LiFi/WiFi hybrid network, fully considers the dynamic change of network load, and introduces a dynamic load balancing algorithm that determines AP allocation in hybrid network based on the data transmission rate as the switching threshold. …”
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Application of Kalman filtering based on sequential processing for satellite navigation by Can-hui CHEN, Xiao-lin ZHANG, Hang-yu HUO

“…In order to reduce the operational volume and ensure the real-time capability of navigation algorithm of Kalman filtering,a novel filtering method called single-satellite sequential extended Kalman filtering (S³EKF) was proposed based on extended Kalman filtering (EKF) and sequential processing,where the single-satellite was as basic filtering unit.Simulation results show that,compared with the traditional EKF method,the S³EKF method can decrease the computation load efficiently when the number of visible satellites is no less than 7,and the reduction of computation load increases with the increase of the satellite’s visible n r,the decrease will reach more than 50% when the number of visible satellites is no less than 15.On the other hand,the consistency and stability of navigation solution are good when the satellites and their number are time-vraiant in S³EKF method.…”
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Random access scheme for different MTC scenario requirement by Zhefu WU, Xinyuan YANG, Wenchao ZHAI, Huimei HAN

“…For the different random access requirements of the mixed scenarios of ultra-reliable low latency (URLLC) and massive machine type communications (mMTC) in MTC,a random access scheme based on devices grouping was proposed.The proposed scheme divided the MTC devices into several groups based on the timing advance (TA) information:for the URLLC scenario,preamble resources were reserved for core devices in each group,and the URLLC devices accessed the network via the contention-free mechanism,to satisfy the ultra-reliable low latency access requirement; for the mMTC scenario,the base station utilized the different TA information in different group to identify devices selecting the same preamble,and performed successive interference cancellation (SIC) algorithm to detect the data information,to satisfy the massive access requirement.Simulation results demonstrate that the proposed scheme can significantly increase the number of the successful devices.…”
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Optimization Design of Brake Disc Structure for Brake Squeal Suppression by Pan Gongyu, Liu Zhikang, Xu Qizhao, Chen Lin

“…By combining the central composite test design, Response Surface Method （RSM） surrogate model method and the Pointer optimization algorithm, and taking the minimum weighted brake squeal tendency coefficient as the optimization goal, the structural optimization design is carried out for the unilateral disc height, heat sink rib height, elastic modulus and disc cap height of the brake disc. …”
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Study on the rearrangeability of 3n-1 stages shuffle-exchange network by GE Fang-bin1, ZHANG Tao1, SONG Jin-yu1, ZHAO Min1, CHEN Wei-hua2

“…Rearrangeability is an essential issue in study of SE（shuffle-exchange） network and its application.Currently,there are no practical methods to realize rearrangeability of SE networks when n>4.Based on the fact,a policy to realize the rearrangeability was proposed in 3n-1 stages Omega network.In the policy,the problem of constructing no conflict routing was translated into how to rearrange routing inputs and decompose routing sequence.A method to rearrange routing inputs by adjusting conflict nodes and expanding routings without conflict was offered.The feasibility of ex-panding routings without conflict was proved,and an algorithm of expanding routings was provided.The rearrangeability of Omega network was first realized when n=5.If Ge conjecture on decomposing routing sequence is constructively proved,how to realize the rearrangeability of the 3n-1 Omega network would be perfectly solved by the policy.…”
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Array amplitude-phase and mutual coupling error joint correction method based on sparse Bayesian by Ding WANG, Weigang GAO, Zhidong WU

“…In the actual array direction finding system, there are often a variety of errors such as amplitude and phase, mutual coupling, which lead to serious deterioration of array direction finding performance.In order to solve the problem of array direction finding misalignment in the presence of low signal-to-noise ratio, small snapshots and multiple errors, the spatial sparsity of signals were introduced, and Bayesian sparse reconstruction technology was used to solve the passive correction and joint estimation of array signal azimuth in the presence of amplitude-phase and mutual coupling errors.The over-complete model of the received signal with error was constructed, and the posterior probability density function of the received signal was obtained.The EM algorithm was used to iteratively optimize the probability density function to solve the corresponding parameters.At the same time, the CRLB of array error and signal azimuth was derived, and by experimental simulation verifies the effectiveness of the proposed method.…”
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Subspace-Based Anomaly Detection for Large-Scale Campus Network Traffic by Xiaofeng Zhao, Qiubing Wu

“…Under the two test sets of public dataset and collected campus network data information of a university, the detection performance of the proposed anomaly detection method is compared with other anomaly detection algorithm models. The results show that the proposed detection model is superior to other models in speed and accuracy under the open dataset. …”
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Solution of optimal control problem for magnetoelectric drive with oscillatory motion by A. A. Tatevosyan

“…On the basis of the obtained solution, the algorithm for optimizing design of magnetoelectric motors for a given law of rotor motion is constructed under condition of providing the maximum electromagnetic force produced by the engine and the minimum mass of the active materials used.…”
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Machine Learning Model for Processing Aerospace Images of the Earthʼs Surface by T. F. Starovoitova, I. A. Starovoitov

“…The shortcomings of existing data processing algorithms are also discussed and an approach is presented to improve the efficiency of data processing and analysis.…”
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Student study group break-even value and adjustment of the educational program portfolio by G. L. Azoev

“…The proposed answers to the questions are based on a marketing approach, which presents formulas for calculating the break-even value of a bachelor’s group, an algorithm for determining the structure of the group, recommendations for adjusting the portfolio of programs and calculating the total amount of university income from extra-budgetary admission, ensuring the planned university development.…”
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Performance analysis of secrecy rate for SWIPT in massive antenna by Hui BAO, Minmin ZHANG, Yaqing YAO, Hui WANG

“…In the multi-drop broadcast system,the existing research is to optimize the single-user security rate in the complete channel state information.In fact,it’s impossible that there exists only one user in the system.The base station often receives incomplete channel state information.Aiming at this problem,a robust beamforming scheme was proposed.In the multi-user case,considering the influence of channel estimation error on the system security rate,the particle swarm optimization algorithm was used to optimize the emission beamforming vector,artificial noise covariance and power split ratio to ensure that the user collects a certain energy while maximizing the safe transmission rate.The simulation results show that the proposed scheme is slightly lower than the security rate in the ideal case,but it is meaningful to the actual system,taking into account the existence of eavesdropping users and the estimation error.…”
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Vibration Optimization of Multi-gear Transmission System based on Mixed-discrete Method by Zhang Lijuan

“…The best design variables are solved by compiling mixed- discrete optimization codes based on branch and bound algorithm. Then,the vibration response is recalculated,the results point out that the mean vibration acceleration and total mass are decreased by 33. 5 percent and 12. 96 percent respectively,which indicates the remarkable effect of vibration optimization.…”
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A Novel Homotopy Perturbation Method with Applications to Nonlinear Fractional Order KdV and Burger Equation with Exponential-Decay Kernel by Shabir Ahmad, Aman Ullah, Ali Akgül, Manuel De la Sen

“…We provide formulae for the Yang transform of Caputo-Fabrizio fractional order derivatives. We derive an algorithm for the solution of Caputo-Fabrizio (CF) fractional order partial differential equation in series form and show its convergence to the exact solution. …”
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On the existence of solutions of the system of nonlinear quasi-mixed equilibrium problems and their stability of the procedure scheme by Satit Saejung

“…Moreover, we show that the stability analysis of the iterative algorithm proposed in their work (and in (J. Inequal. …”
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Shining Lights on Limits: Optimizing Luminescent Solar Concentrators for Solar Windows by Thomas A. de Bruin, Wilfried G. J. H. M. van Sark

“…To optimize this trade‐off, a numerical algorithm is used to find the power conversion efficiency of 92 luminophores, ensuring an average visible transmission >55% and a color rendering index >70. …”
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Faculty Publication Activity and Resources for Its Increase by Ashot R. Alaverdov

“…The author has developed a project of standard organizational structure of management for this Center, as well as an algorithm of its work and the main functions of its divisions.…”
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