AN APPROXIMATE METHOD FOR LARGE-SIZE STRUCTURAL PART RELIABLE LIFE PREDICTION by SUN WeiGuang, REN JunGang, HU JieXin, XIE LiYang

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Isogeometric Approximation for Dynamics of Infinite String Using Difference Equation Method by Jerzy RAKOWSKI, Przemyslaw WIELENTEJCZYK

“…An efficient method of vibration investigation of an infinite string using the isogeometric analysis (IGA) with B-spline basis functions is considered. …”
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Research on Fatigue Life and Node Displacement Modification Method of Helical Gears by Li Yufeng, Li Dongyang, Wu Luji, Ge Shixiang, Yang Yongfei, Chang Hao

“…On the basis of the strain analysis guidance, a node displacement modification method is proposed, which integrates the deformation of equidistant section nodes through K-Means clustering. …”
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M-APSK phase detection algorithm and parallel carrier synchronization method by Hao HUAN, Kexue REN

“…In order to realize the precise phase correction of high order modulation in M-APSK modem, the Q-power non-data aided phase detection method recommended by DVB-S2 standard for 16APSK and 32APSK was extended to 64APSK, 128APSK and 256APSK.An improved algorithm was proposed to solve the problem of unstable loop operation when the proportion of constellation points used for phase detection in high-order modulation was low.By using threshold judgment on the amplitude of the received symbol after power normalization, phase detection was performed only when the amplitude was higher than the threshold, and the filter state and phase compensation value were not changed when the amplitude was lower than the threshold, so as to improve the phase detection effectiveness and reliability of constellation points and reduce the lock threshold.Aiming at the problem that the symbol rate of high-speed data transmission was very high but the working clock frequency of the processor was relatively low, a parallel carrier synchronization method for M-APSK was proposed, which could meet the needs of the receiver’s working clock.Compared with the traditional constant coding and modulation (CCM) carrier synchronization loop, the parallel method could also be applied to the frequency tracking of variable coding and modulation (VCM) system.…”
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A sequential-generation-based intelligent method for layout of pipeline supports by Jingjing Wu, Qichang He

“…Subsequently, a knowledge-driven variable-step-size sampling method introduces to optimize efficiency without compromising effectiveness. …”
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A Driver’s Calling Behavior Detection Method Based on Deep Learning by XIONG Qunfang, LIN Jun, YUE Wei, LIU Shiwang, LUO Xiao, DING Chi

“…At present, driver’s calling behavior detection methods are prone to object occlusion, image rotation, illumination change and are difficult to extract deep features of the image, which degrade the detection accuracy. …”
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OPTIMIZATION OF FATIGUE LIFE OF TRANSMISSION SHAFT BASED ON RESPONSE SURFACE METHOD by LIU LongJie, ZHAO LiHui, SHI ChengMiao, ZHENG SongLin, WENG Shuo, LIU XiangZhen, DAI Lei

“…The test result shows that the life of the drive shaft is doubled. The effectiveness of the optimization method is verified through experiments, and the method has certain reference significance for the optimization of shaft parts in the future.…”
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An Experimental Study on Extraction of Sugar from Carob Using with Taguchi Method by Ufuk Durmaz, Mehmet Berkant Ozel

“…Increasing the amount of water in extraction decreasesproduction efficiency and quality while increasing energy consumption. In thisstudy, the effects of parameters such as water quantity, extractiontemperature, duration and the batch number that affect the quality of molasses were experimentallyinvestigated by being used Taguchi method.…”
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RESEARCH ON STRESS SPECTRUM GROUPING METHOD OF HIGH SPEED EMU BOGIE by CHEN DaoYun, LIU DeKun, SUN ShouGuang, LI Qiang

“…The determination of structural dynamic stress spectrum is of great significance in the structural fatigue strength evaluation as well as reliability design.To evaluate structure of fatigue strength accurately,stress history on fatigue key parts of motor bogie framework was obtained through dynamic stress test of high-speed EMU on actual operation line.Fatigue damage values per kilometer of stress spectra with different grouping numbers were calculated using equidistant grouping method and Palmgren-Miner linear cumulative damage theory.Then,the effect of different group number on fatigue damage was analyzed.The results show that when the grouping number is small,it can lead to deviation of fatigue damage.As the grouping number increasing,damage decreasing,and tends to the theoretical value.This phenomenon can be interpreted by the EMU framework dynamic stress characteristic of small stress cycles high concentration.Meanwhile,an unequal distance grouping method was presented which is applicable to framework structure stress spectrum.The study can provide the basis for framework structure design.…”
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Experimental Study of Ice Slurry Production Characteristics by Vacuum Stirring Method by Liu Xi, Lei Xiaojian, Zheng Minfeng, Huang Cheng, Li Xuelai

“…The process of ice slurry preparation is observed with the ice slurry preparation equipment based on vacuum stirring method, and the effects of ethylene glycol additive, solution volume and stirring speed on the supercooling degree of ice slurry preparation are investigated experimentally. …”
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Surface Reflection Suppression Method for Air-Coupled SFCW GPR Systems by Primož Smogavec, Dušan Gleich

“…This paper presents a novel surface reflection suppression algorithm for stepped-frequency continuous wave (SFCW) GPR systems. The proposed method estimates the surface reflection component and applies phase-compensated subtraction at the receiver site, effectively suppressing background reflections. …”
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An ultrasonic C.W. doppler method of measurement of the blood flow velocity by T. POWAŁOWSKI

“…This paper presents an analysis of factors affecting the results of measurement of the blood flow velocity by the ultrasonic continuous wave (O.W.) Doppler method. For the parabolic flow velocity profile the effect on the spectrum of a Doppler signal of such factors as the ratio of the width of the ultrasonic beam to the inner diameter of the blood vessel and the coincidence of the transmitted ultrasonic beam with the one received inside the blood vessel, was analyzed. …”
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An in vitro simulation method for the tribological assessment of complete natural hip joints. by Dawn Groves, John Fisher, Sophie Williams

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Webshell malicious traffic detection method based on multi-feature fusion by Yuan LI, Yunpeng WANG, Tao LI, Baoqiang MA

“…Webshell is the most common malicious backdoor program for persistent control of Web application systems, which poses a huge threat to the safe operation of Web servers.For most Webshell detection method based on the request packet data for training, the method for web-based Webshell recognition effect is poorer, and the model of training efficiency is low.In response to the above problems, a Webshell malicious traffic detection method based on multi-feature fusion was proposed.The method was characterized by the three dimensions of Webshell packet meta information, packet payload content and traffic access behavior.Combining domain knowledge, feature extraction of request and response packets in the data stream.Transformed into feature extraction information for information fusion, forming a discriminant model that could detect different types of attacks.Compared with the previous research method, the accuracy rate of the method here in the two classification of normal and malicious traffic has been improved to 99.25%.The training efficiency and detection efficiency have also been significantly improved, and the training time and detection time have been reduced by 95.73% and 86.14%.…”
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A Modal-Based Substructure Method Applied to Nonlinear Rotordynamic Systems by Helmut J. Holl

“…An efficient semianalytic time-integration method combined with a substructure technique is given, which accounts for nonsymmetric matrices and local nonlinearities. …”
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PARAMETER EQUIVALENT METHOD OF STATOR ANISOTROPIC MATERIAL BASED ON MODAL ANALYSIS by TANG YouLiang, LV PinDe, ZHANG Jin, LI ShouJun

“…Secondly, the modal experiment is carried out by hammering method to verify the accuracy of the finite element model and determine the effectiveness of the method for correcting the equivalent material parameters. …”
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Improved Feature-Selection Method Considering the Imbalance Problem in Text Categorization by Jieming Yang, Zhaoyang Qu, Zhiying Liu

“…The experimental results show that the improved scheme can significantly enhance the performance of the feature-selection methods.…”
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Research on Thrust Allocation Strategy for ROVs Based on Constructive-Analytical Method by XU Lei, SONG Junhui, ZHANG Dinghua

“…The simulation results show that the constructive-analytical method not only simplifies the thrust allocation calculations but also effectively eliminates the problem of saturated output of thrust allocation.…”
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An Improved Generalized Method for Evaluation of Parameters, Modeling, and Simulation of Photovoltaic Modules by Vandana Jha, Uday Shankar Triar

“…This paper proposes an improved generalized method for evaluation of parameters, modeling, and simulation of photovoltaic modules. …”
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Exploration of intelligent education method:mobile game assisted research teaching by Hao SHENG, Li RUAN, Ke XU, Jun HAN, Zhang XIONG, Xiaopeng GAO, Weifeng LYU

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