STUDY ON A NUMERICAL METHOD FOR THE DYNAMIC RESPONSE OF BOLTED STRUCTURE UNDER PRETENSION AND IMPACT LOADS by GUO LiLun, CHEN Zhongfu, LUO JingRun, CHEN Gang

“…Then,the dynamic response is calculated taking the statically deformed state as the initial reference.For the mouth shape bolted structure,the numerical method presented in this article was used to study the dynamic response. …”
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Methodological approach to evaluation the level of a university organizational culture by E. V. Kotov, Yu. O. Roschina

“…The level of organizational culture is determined on the basis of an integral (generalizing) indicator, which, unlike analogues developed by other researchers, is calculated as the geometric mean of the integral indexes of groups of indicators, which makes it possible to determine the median value, which is the closest to the average value.…”
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Prediction and Analysis of Polished Rod Dynamometer Card in Sucker Rod Pumping System with Wear by Dongyu Wang, Hongzhao Liu

“…By analyzing the wear law, the wear volume and wear time of the pump barrel were calculated under abrasive wear. The forces of the sucker rod microunit were analyzed, and the wave equation of the sucker rod was established. …”
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MODEL PREDICTIVE CONTROL FOR PHOTOVOLTAIC STATION MAXIMUM POWER POINT TRACKING SYSTEM by I. Elzein, Yu. N. Petrenko

“…The system under consideration consists of a solar array with nonlinear time-varying characteristics, a step-up converter with appropriate filter.The proposed algorithm has the advantages of maximizing the efficiency of the power utilization, can be integrated to other MPPT algorithms without affecting the PVM performance, is excellent for Real-Time applications and is a robust analytical method, different from the traditional MPPT algorithms which are more based on trial and error, or comparisons between present and past states. The procedure to calculate the optimal duty ratio for a buck, boost and buck-boost converters, to transfer the maximum power from a PVM to a load, is presented in the paper. …”
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Resistivity and AE Response Characteristics in the Failure Process of CGB under Uniaxial Loading by Tingye Qi, Guorui Feng

“…In addition, it is possible to calculate the roof stress using the relation equation between the resistivity and stress.…”
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Federated learning scheme for mobile network based on reputation evaluation mechanism and blockchain by Ming YANG, Xuexian HU, Qihui ZHANG, Jianghong WEI, Wenfen LIU

“…Federated learning is a new distributed machine learning technology, where training tasks are deployed on user side and training model parameters are sent to the server side.In the whole process, participants do not need to share their own data directly, which greatly avoids privacy issues.However, the trust relationship between mobile users in the learning model has not been established in advance, there is hidden safety when users perform cooperative train with each other.In view of the above problems, a federated learning scheme for mobile network based on reputation evaluation mechanism and blockchain was proposed.The scheme allowed the server side to use subjective logic models to evaluate the reputation of participating mobile users and provided them with credible reputation opinions sharing environment and dynamic access strategy interface based on the technique of smart contract of blockchain.Theoretical and experimental analys is results show that the scheme can enable the server side to select reliable users for training.And it can achieve more fair and effective reputation calculations, which improves the accuracy of federated learning.…”
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Cooperative Localization of Multi-UAVs via Dynamic Nonparametric Belief Propagation under GPS Signal Loss Condition by Jiuqing Wan, Liping Zhong, Fan Zhang

“…Specifically, we propose a dynamic Nonparametric Belief Propagation (dNBP) algorithm to calculate the posterior distribution of UAV's position conditioned on all observations made in the whole UAVs group. …”
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Statistics of Finite Scale Local Lyapunov Exponents in Fully Developed Homogeneous Isotropic Turbulence by Nicola de Divitiis

“…This link, which in turn leads to the closure of von Kármán–Howarth and Corrsin equations, agrees with results of previous works, supporting the proposed PDF calculation, at least for the purposes of the energy cascade main effect estimation. …”
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Coverage path planning for multi-AUV considering ocean currents and sonar performance by Xukai Mu, Wei Gao

“…First, the necessary sampling points for the area coverage are identified based on the sonar detection range at different locations, which is calculated by combining the ocean acoustics model with the sonar equation. …”
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Modelling of the fracture toughness anisotropy in fiber reinforced concrete by S. Tarasovs, J. Kruminš, V. Tamužs

“…In proposed model user defined elements are used to calculate the bridging force during the course of the analysis when the crack starts to grow. …”
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Malware detection approach based on improved SOINN by Bin ZHANG, Lixun LI, Shuqin DONG

“…To deal with the problems of dynamic update of detection model and high computation costs in malware detection model based on batch learning,a novel malware detection approach is proposed by combing SOINN and supervised classifiers,to reduce computation costs and enable the detection model to update dynamically with the assistance of SOINN′s incremental learning characteristic.Firstly,the improved SOINN was given.According to the whole alignment algorithm,search the adjusted weights of neurons under all input sequences in the learning cycle and then calculate the average value of all adjusted weights as the final result,to avoid SOINN′s stability under different input sequences and representativeness of original data,therefore improve malware detection accuracy.Then a data preprocessing algorithm was proposed based on nonnegative matrix factor and Z-score normalization to transfer the malware behavior feature vector from high dimension and high order to low dimension and low order,to speed up and avoid overfitting and further improve detection accuracy.The results of experiments show that proposed approach supports dynamic updating of detection model and has a significantly higher accuracy of detecting unknown new samples and lower computation costs than tradition methods.…”
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A New Method of Fault Feature Extraction Based on Hierarchical Dispersion Entropy by Peng Chen, Xiaoqiang Zhao, HongMei Jiang

“…Secondly, dispersion entropies of different nodes are calculated. Hierarchical dispersion entropy can realize the comprehensive feature extraction of the high- and low-frequency band information of vibration signals and overcome the problems that dispersion entropy and multiscale dispersion entropy are insufficient to extract the fault feature information of vibration signals. …”
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Optimal Energy Consumption Analysis of Natural Gas Pipeline by Enbin Liu, Changjun Li, Yi Yang

“…By using a dynamic programming method for solving the model and preparing calculation software, we can ensure that the solution process is quick and efficient. …”
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Heterogeneity Measures for Analyzing the Scale Effect and Anisotropy of Joint Roughness by Jibo Qin, Zhenhan Zhang, Jun Ye

“…Actual rock joint cases were used to collect JRC data with 10 sample sizes from 10 to 100 cm and 24 measurement directions from 0° to 345° and to calculate the heterogeneity measures of the joint roughness scale effect in 24 directions and joint roughness anisotropy in 10 sizes. …”
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The Effect of Photovoltaic Panels on the Rooftop Temperature in the EnergyPlus Simulation Environment by Changhai Peng, Jianqiang Yang

“…However, all the terms of the Heat Balance Model, including the absorbed direct and diffuse solar radiation, net long-wave radiation with the air and surroundings, convective exchange with the outside air, and conduction flux in or out of the surface, can still be used to calculate the temperature and heat flux within the BIPV’s air gap.…”
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Performance Assessment of Hybrid Fibre-Reinforced Concrete (FRC) under Low-Speed Impact: Experimental Analysis and Optimized Mixture by Abbas Sadeghian, Taleb Moradi Shaghaghi, Yaghoub Mohammadi, Hossein Taghipoor

“…Results obtained using Design-Expert software revealed an initial strength of 886.127 N and an optimal energy absorption of 4.9865 J. In addition, the calculated R2 values and normal probability graphs showed a fairy accurate correlation between the results of the experimental and mathematical approaches. …”
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Privacy-preserving real-time road conditions monitoring scheme based on intelligent traffic by Jiayin LI, Wenzhong GUO, Xiaoyan LI, Ximeng LIU

“…To alleviate the traffic pressure on roads,reduce the appearance of road congestion,and avoid the occurrence of traffic accidents,a privacy-preserving intelligent monitoring (PPIM) scheme based on intelligent traffic was proposed in combination with the safe and k-nearest neighbor (KNN) algorithm.To ensure the security of traffic data,the data content was randomly divided into independent parts via the secure multi-party computing strategy,and the data components were stored and encrypted separately by non-colluding multi-servers.To improve the accuracy of road condition monitoring,an improved KNN traffic monitoring algorithm was proposed.By virtue of the similarity calculation of data,the correlation value to measure the degree of traffic condition relationship between roads was obtained.And it was integrated with the KNN as the weight coefficient.To speed up the processing of dense data,a series of data security computing protocols were designed,and the data security processing was realized.In addition,real traffic data were used to verify the algorithm.The results show that the improved KNN algorithm is helpful to improve the accuracy of traffic monitoring.The analysis shows that the algorithm can not only guarantee the safety of data but improve the accuracy of traffic monitoring.…”
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Dynamic Response of Shear-Flexible Cylindrical Isotropic Shells with Clamped Edges by Zafer I. Sakka, Jamal A. Abdalla, H.R.H. Kabir

“…The results thus presented should serve as bench-mark solutions for future comparisons with numerical and approximate methods for calculation of free vibration parameters of moderately-thick isotropic cylindrical shells.…”
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Traffic Flow Prediction Based on Multi-Spatiotemporal Attention Gated Graph Convolution Network by Yun Ge, Jian F. Zhai, Pei C. Su

“…Because graph convolutional neural network (GCN) can perform effective feature calculation for unstructured data, doing research based on GCN model has become the main way for traffic flow prediction research. …”
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Digital finance and equitable industrial carbon emissions: an empirical analysis of Chinese cities by Heyu Lu, Zongfa Wu

“…Using a panel dataset of Chinese cities from 2011 to 2020, this study calculates the equitable industrial carbon emission (EICE) for 276 cities in China and quantitatively studies the effect of DF on EICE. …”
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