A perturbation-based model for rectifier circuits by Vipin B. Vats, H. Parthasarathy

“…The governing differential equation of the half-wave rectifier with capacitor filter is analyzed by expanding the output voltage as a Taylor series with respect to an artificially introduced parameter in the nonlinearity of the diode characteristic as is done in quantum theory. …”
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Channel estimation method for massive MIMO system in Rice channel by Xueli WANG, Haiquan WANG, Xiao LI, Dakuan YANG

“…The high-speed mobile transportations,such as high-speed rails,pilot-less airplanes,are mostly in the open areas.Due to the existence of line of sight (LOS) propagations,the Rayleigh fading model can not describe the channels very well in these environments.The Rice fading channel model is constituted of a LOS component and a multiple-path component,which can characterize the channels more accurately.Based on the Rice model,the improved channel estimation methods and corresponding decoding methods were proposed based on the superimposed training sequences for massive multiple input multiple output (MIMO) system.The improved channel estimation methods were divided into two cases:the LOS component was known to the receiver and the other was unknown.The numerical simulation results show that the superiority of the proposed methods.…”
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An Efficient Deterministic-Stochastic Model of the Human Body Exposed to ELF Electric Field by Anna Šušnjara, Dragan Poljak

“…This contribution introduces the new perspective of the problem: the variability inherent to input parameters, such as the height of the body, the shape of the body, and the conductivity of body tissue, is propagated to the output of interest (induced axial current). The stochastic approach is based on the stochastic collocation (SC) method. …”
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Improve the robustness of algorithm under adversarial environment by moving target defense by Kang HE, Yuefei ZHU, Long LIU, Bin LU, Bin LIU

“…Traditional machine learning models works in peace environment,assuming that training data and test data share the same distribution.However,the hypothesis does not hold in areas like malicious document detection.The enemy attacks the classification algorithm by modifying the test samples so that the well-constructed malicious samples can escape the detection by machine learning models.To improve the security of machine learning algorithms,moving target defense (MTD) based method was proposed to enhance the robustness.Experimental results show that the proposed method could effectively resist the evasion attack to detection algorithm by dynamic transformation in the stages of algorithm model,feature selection and result output.…”
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Solar GHI Ensemble Prediction Based on a Meteorological Model and Method Kalman Filter by Yuanyuan Liu

“…As the accuracy of the version output related to its specific position is often questionable, group prediction constituting three members is suggested and agreed upon measurement. …”
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Study on Hysteresis Curve Characteristic of Input Shaft of Harmonic Reducer by Tang Xiaohuan, Wang Xiangjiang, Feng Dongyan

“…A test device of torsional stiffness and hysteresis of the harmonic drive reducer are described and its experimental study is carried out. The output shaft of the harmonic gear is fixed,one- way gradual change torque is applied to the input shaft and a protractor instrument is applied to measure the rotation angle of the input shaft. …”
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Adaptive Fuzzy PID Control System for Satellite Earth Station Antenna Group Factor Based on Edge Calculation by Haibin SHAN, Yanjun SHI, Zijing LIU, Yuanhong LI, Wenhua ZHAO, Muquan HE, Chuzhou LI

“…The antenna tracking control system of satellite ground receiving station generally adopts PID control.Due to the infl uence of various uncertain factors, it is diffi cult to obtain the optimal control parameters for this kind of system, resulting in the PID control eff ect is not ideal.An adaptive fuzzy PID antenna tracking control system based on edge computing was designed.The parameters of PID controller were adjusted in time by fuzzy control algorithm, and the optimal calculation of fuzzy control input and output domain was realized in edge computing server.The simulation results showed that the adaptive fuzzy PID antenna tracking control system based on edge calculation could achieve good control eff ect.…”
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Steady-State Fuzzy Modeling of Ultrasonic Motor System by Shi Jingzhuo, Lv Lin

“…In this paper, the two-input and one-output steady-state model of ultrasonic motor system is worked out using fuzzy reasoning modeling method. …”
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CW Yb:YAG LASER FOR PORTABLE MEASURING SYSTEMS by A. M. Ivashko, V. E. Kisel, A. S. Yasukevich, N. V. Kuleshov

“….%):YAG crystal with the length of 3 mm the maximal output power more than 2 W was obtained in the whole of temperature range.…”
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Semi-dynamic pilot allocation based on graph coloring in massive MIMO systems by Fangmin XU, Hui QIAN, Haiyan CAO

“…To alleviate the performance loss caused by pilot contamination in massive multiple-input multiple-output (MIMO) systems,a semi-dynamic pilot allocation scheme based on graph coloring was proposed.Firstly,a pilot reuse threshold was derived for users.Then,based on the pilot reuse threshold,users of each cell are divided into cell-center users and cell-edge users,where cell-center users were allowed to reuse the same pilot.Finally,based on the graph coloring theory,the pilot resources were allocated to cell-edge users with serious pilot interference by multi-cell coordination.The simulation results show that the proposed pilot allocation scheme reduces the pilot interference and improves the uplink achievable rate of the whole system effectively.…”
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Pilot interference mitigation for TDD cell-free massive MIMO systems by Yue WANG, Fangmin XU, Haiyan CAO

“…To alleviate the pilot interference for cell-free massive multi-input multi-output (MIMO) system and improve system’s performance, a comprehensive approach including the pilot reuse, access point (AP) selection and power allocation was proposed.Firstly, to alleviate the pilot contamination, the pilot assignment based on the order of user distance was proposed, in which the pilot sharing was only allowed when the distance between two users is large enough to reduce the impact of pilot reuse.Then, by AP selection, only the APs which have main impact on the macro diversity gain were selected as the user’s serving APs.Finally, a modified max-min power control algorithm was proposed to improve the system’s average throughput.Simulation results show that the pilot interference mitigation strategy proposed improves the performance of the system significantly.…”
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ECO MARKETING IN AGRICULTURE AND BARRIERS TO ORGANIC FOOD SALES by Zdenka Kádeková, Anton Kretter

“…Its aim is sustainable and ecologically balanced agricultural system producing quality food, protecting and using natural resources and landscapes in a sustainable manner. Market output of eco-agriculture is organic food. Its successful application in the market is distorted by the action of the barriers to their consumption and barriers to quality, price, situational, habit, motivation, information and trust barriers. …”
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Homomorphic signature schemes for single-source and multi-source network coding by Huifang YU, Wen LI

“…To solve the problems of pollution attacks of single-source and multi-source network coding,two homomorphic signature schemes for network coding were proposed.In homomorphic signature for single-source network,the message hash value was signed on the elliptic curve,then the message,hash value and the signature of hash value were output,and the receiving node could verify the signature,the elliptic curve signature based on homomorphism could resist intra/inter-generation pollution attacks.Homomorphic signature from pairings for multi-source network coding could resist pollution attacks,and the introduction of timestamp made it be capable to resist replay attacks.In the random oracle model,it proves that two schemes are all secure under the selective attacks.Analysis shows that two schemes can effectively improve the verification efficiency.…”
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Preparation and Properties of Segmented Quasi-Dynamic Display Device by Dengwu Wang, Fang Wang

“…The control signal generated by monostable process of 555 counter was used to drive the relay to work. The actual output of this kind of display was also observed. …”
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Convergence Time Calculation for Supertwisting Algorithm and Application for Nonaffine Nonlinear Systems by Jianhua Zhang, Quanmin Zhu, Yang Li

“…Regardless of affine or nonaffine nonlinear systems, supertwisting control (STC) provides a general solution based on virtual control law skill ensuring the output of the systems converges to the origin point at exact time. …”
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Operation Optimization of Microgrid System Based on Intelligent System Model by Jian Kang

“…Moreover, this paper conducts a quantitative calculation and research on the maximum compensation capacity of the active power filter device and proposes a harmonic power adaptive compensation control strategy in the case of the limited output capacity of the APF device. In addition, this paper adopts the method of extracting the harmonic current command in the synchronous coordinate system based on the band-pass filter composed of SOGI and combines the RDFT algorithm to determine the number of harmonics that can be compensated and the degree of compensation for the harmonic number. …”
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Workflow Modelling and Analysis Based on the Construction of Task Models by Glória Cravo

“…To each task an input/output logic operator is associated. Furthermore, we associate a Boolean term to each transition present in the workflow. …”
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Joint estimation of doppler frequency and DOA-DOD based on FRFT in bistatic MIMO radar system by Li LI, Tian-shuang QIU

“…A novel method for the joint parameters estimate in the bistatic multiple-input multiple-output (MIMO) radar system was proposed.Firstly,a novel signal model to accurately estimate parameters of the et was proposed.Two Doppler parameters,initial Doppler frequency and Doppler frequency rate,were estimated by peak-searching in the fractional Fourier transform (FRFT) domain.Two sub-array models to accurately estimated the direction of departure (DOD) and direction of arrival (DOA) by employing the proposed fractional Fourier transform based MUSIC (FRFT-MUSIC) algorithm and the fractional Fourier transform ESPRIT (FRFT-ESPRIT) algorithm.Simulation results were presented to verify the effectiveness of the proposed method.…”
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De l' interjection by Sophie Piron

“…L’étude propose enfin une analyse de ces unités lexicales et opte pour un classement en catégorie de mot plutôt qu’en phrase non verbale. …”
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On Control of a Boost DC-DC Power Converter under Constrained Input by Javier Moreno-Valenzuela, Octavio García-Alarcón

“…The analysis of the closed-loop trajectories provides the conclusion that output voltage regulation is achieved in asymptotic form. …”
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