Optimization of Jamming Type Selection for Countering Multifunction Radar Based on Generative Adversarial Imitation Learning by Tianjian Yang, You Chen, Siyi Cheng, Xing Wang, Xi Zhang

“…Firstly, the agent learns from expert strategies to achieve high reward returns, avoiding wasted time from unguided exploration, thereby ensuring that the agent maintains a good jamming effect throughout its application process. Secondly, based on generative adversarial theory, the discriminator measures the difference between the generated and expert strategies. …”
Get full text

Power Improved Generalized Heronian Mean Operators Utilizing Hamacher Operations with Picture Fuzzy Information by Baolin Li, Lihua Yang

“…First, we introduce the Hamacher operations, the normalized hamming distance, and similarity measure of picture fuzzy numbers (PHNs). Second, based on these, two new picture fuzzy aggregating operators (AOs), the picture fuzzy Hamacher weighted power improved generalized Heronian mean (PFHWPIGHM) operator and the picture fuzzy Hamacher weighted geometric power improved generalized Heronian mean (PFHWGPIGHM) operator, are put forward, and some properties and special instances of proposed AOs are also investigated. …”
Get full text

New construction method of periodic quasi-complementary sequence set by Xiaoyu CHEN, Chengrui WANG, Fan LIU

“…--math xmlns="http://www.w3.org/1998/Math/MathML"> <msub> <mi>&#x2124;</mi> <mi>N</mi> </msub> </math--></inline-formula> .The obtained periodic quasi-complementary sequence sets had new subsequence lengths.Secondly, based on the one-coincidence frequency-hopping sequence set, the asymptotically optimal periodic quasi-complementary sequence set was constructed by defining the mapping function from <inline-formula><!…”
Get full text

Disease Identification of Lentinus Edodes Sticks Based on Deep Learning Model by Dawei Zu, Feng Zhang, Qiulan Wu, Wenyan Wang, Zimeng Yang, Zhengpeng Hu

“…First, a dataset of Lentinus edodes stick diseases was constructed. Second, based on the ResNeXt-50(32 × 4d) model and the pretraining weight of the ImageNet dataset, the influence of pretraining weight parameters on recognition accuracy was studied. …”
Get full text

Dynamic Modelling and Continuous Trajectory Tracking Control of Space Robots Based on Lie Group SE(3) by Yong Wang, Kejie Gong, Yurui Duan, Boyong He, Hong Ma

“…Firstly, the dynamics equations for a space robot in the joint space and workspace are established separately in the framework of Lie group SE(3) and screw theory based on the Lagrange principle. Secondly, based on the proposed feedback form, a PD (proportional derivative) control law of output force on the end-effector is designed, and a closed-loop continuous tracking control strategy is proposed using the force Jacobian matrix and the kinematic model. …”
Get full text

Elastodynamic modeling and analysis of a 4SRRR overconstrained parallel robot by B. Wang, Y. Zhao, C. Yang, X. Hu, Y. Zhao

“…The Lagrangian equation is then used to derive the dynamic control equations for the rods. Second, based on the theory of multipoint constraint elements and linear algebra, a set of independent displacement coordinates is established for the connection points between rods and the moving platform, rods and rods, and rods and the fixed platform. …”
Get full text

C-Arm Image-Based Surgical Path Planning Method for Distal Locking of Intramedullary Nails by Wei-En Hsu, Ching-Hsiao Yu, Chih-Ju Chang, Hung-Kang Wu, Tsong-Han Yu, Ching-Shiow Tseng

“…The last ten drilling test sets were completed successfully (with an average duration of 48 seconds). Based on the experimental results, the proposed algorithm was feasible for clinic applications.…”
Get full text

Study on Optimization of Grouting Curtain Design of Damsin Karst Areas Based on Response Surface Methodology by XIE Mengshan, CAO Lei, GUO Xiaojing, LIU Xu, ZHANG Cong, JIANG Maiyong, LI Jinyou

“…Curtain grouting is an effective measure to solve the seepage problem of dams in karst areas.In order to optimize the grouting curtain design of dams in karst areas and effectively control the seepage flow and pressure of the dam foundation,a curtain service model of dams in karst areas is firstly built by using multi-field coupling software,and the evaluation standard of curtain service performance of dams in karst areas is put forward.Secondly,based on experimental design of Box-Behnken response surface,a regression model among curtain permeability coefficient,curtain height,curtain width,and Ca(OH)₂ dissolution rate in the curtain body in karst areas is established.Finally,according to the fmincon function in Matlab,a model for optimizing design parameters of grouting curtain in karst areas is established,and the optimal combination of design parameters of curtain of a dangerous dam in the karst area is solved by taking the minimum curtain grouting amount as the optimization principle under the condition of satisfying the curtain service performance.The results show that the curtain permeability coefficient is the most important factor affecting the Ca(OH)₂ dissolution rate in the dam curtain in karst areas,followed by the curtain height and width.In view of the safety and economic requirements of the project,it is suggested that the curtain height of 15.80 m and the curtain width of 4.51 m should be adopted in the curtain design of the dam in the karst area.The research results can provide a reference for evaluating the service performance of dam curtain in karst areas and offer a new idea for optimizing the design of grouting curtain of dams in karst areas.…”
Get full text

Configuration Synthesis of Actuators for Underwater Vehicles<italic>'</italic> Receiving and Placing System by Jiang Mingyang, Liu Hailong, Guo Chuandong, Chen Depeng, Zhang Lin

“…Firstly, the types of the planar nine-bar single-hinge mechanism are synthesized based on the method of blastogram insertion, and 40 kinds of monochrome topological maps are obtained. Secondly, based on 40 kinds of monochrome topological maps, a method for synthesizing planar nine-bar mechanism with only one type of complex hinge mechanism is proposed. …”
Get full text

Leveraging Social Engineering Techniques for Ethical Purposes:  An Approach to Develop Fake Android App for Collecting Valuable Data Discreetly by Hussein Abdulkhaleq Saleh alsharya

“…The total estimated time to complete the fake UI process (cumulative user engagement time) is 57-60 seconds, where each activity takes 8 seconds based on the adopted development approach. …”
Get full text

Application of Gabor Image Recognition Technology in Intelligent Clothing Design by Sujuan Qiao

“…The calculation results are then combined to achieve the purpose of multicore parallel acceleration of the entire calculation process. Secondly, based on the consideration of improving the real-time performance of the intelligent clothing design system, combined with the existing multicore environment, this paper uses the intelligent model to design and implement the image parallel Gabor feature extraction algorithm and uses image processing and analysis technology to analyze the visual elements of traditional clothing and identify and quantify to form a relatively complete clothing visual element evaluation system, which provides a basis for large-scale collection and automated evaluation of clothing visual effects, as well as clothing trend tracking and prediction. …”
Get full text

Improved differential protection for two-terminal weak feed AC system considering negative sequence control coordination strategy by Junjie Hou, Qiangqiang Gao, Yanfang Fan, Guobing Song, Xiaofang Wu, Wentao Yang, Runbin Cao, Faxi Peng

“…On this basis, the adaptability of differential protection under TCS is analyzed, and the quantization function that can quantify the operation performance of differential protection is given. Secondly, based on the problem of the traditional negative sequence control strategy, an improved control strategy is introduced and the operation performance of differential protection under the improved control strategy is studied. …”
Get full text

Transient Characteristics and Operation Regulation of Grid‐Connected Variable Speed Pumped Storage‐Wind‐Solar Hybrid Power System by Yanhao Li, Fanchao Song, Wencheng Guo

“…Firstly, the model of grid‐connected VSPS‐wind‐solar HPS is established. Secondly, based on a calculating example, the transient characteristics of grid‐connected VSPS‐wind‐solar HPS are analyzed by using numerical simulation. …”
Get full text

Equivalent method for DFIG wind farms based on modified LightGBM considering voltage deep drop faults by Xuecheng Liu, Peixiao Fan, Jun Yang, Song Ke, Binyu Ma, Yangzhou Pei, Jian Xu

“…The factors influencing the Crowbar action state and trip-off state of wind turbines are identified, and a feature vector for wind turbine operating states is constructed. Second, based on simulations to obtain sample data of wind turbine operating states under different operating scenarios in wind farms, a classification model based on mLightGBM is established. …”
Get full text

A risk prediction score to identify patients at low risk for COVID-19 infection by Wui Mei Chew, Chee Hong Loh, Aditi Jalali, Grace Shi En Fong, Loshini Senthil Kumar, Rachel Hui Zhen Sim, Russell Pinxue Tan, Sunil Ravinder Gill, Trilene Ruiting Liang, Jansen Meng Kwang Koh, Tunn Ren Tay

“…Two prediction models were derived, the first based on age, presence of sore throat, dormitory residence, blood haemoglobin level (Hb), and total white blood cell counts (TW), and the second based on presence of headache, contact with infective patients, Hb and TW. …”
Get full text

Fire Retardancy Properties and Thermal Degradation of Three Timber Species Overlayed by Sengon Wood Charcoal by Joko Sulistyo, Sri Nugroho Marsoem, Tomy Listyanto, Yus Andhini Bhekti Pertiwi Bhekti Pertiwi

“…Teak, red meranti and pine timbers overlayed by CFR sheet from sengon charcoal were tested through feeding on fire for 1500 seconds based on ASTM E 6-02 method with a modification. …”
Get full text

Analisis Perbandingan Algoritma Djikstra, A-Star, dan Floyd Warshall dalam Pencarian Rute Terdekat pada Objek Wisata Kabupaten Dompu by Rusydi Umar, Anton Yudhana, Andi Prayudi

“…Dijkstra algorithm processing time is 0.0060 seconds, A* algorithm is 0.0067 and Floyd Warshall algorithm is 0.0433 seconds. Based on these results, Dijkstra is superior in the route search process. …”
Get full text

Coordinated frequency modulation strategy considering source–load uncertainty by Xiaohong Dong, Shuo Wang, Dengxin Ai, Yang Ma, Xiaodan Yu

“…The adjustable capacity of WTGs is determined based on the wind speed prediction error and the operation strategy of load reduction; Secondly, based on the controllable domain model of an EV considering the off-grid time uncertainty, the adjustable capacity of EV clusters is determined by state grouping of the state of charge (SOC) according to its charging urgency. …”
Get full text

Investigation on Influences of  Two Discrete Methods on Galloping Characteristics of Iced Quad Bundle Conductors by Xiaohui Liu, Guangyun Min, Chuan Wu, Mengqi Cai

“…One is to use a direct method to transform partial differential galloping equation into an ordinary differential galloping equation, while the other is to use an indirect method to transform partial differential galloping equation into an ordinary differential galloping equation. Secondly, based on the wind tunnel test, the three-component aerodynamic coefficients of each subconductor of the iced quad conductor are obtained, and the equivalent aerodynamic coefficients at the central axis of the quad bundle conductor are obtained by using a reasonable method. …”
Get full text

Dynamic Prediction Research of Silicon Content in Hot Metal Driven by Big Data in Blast Furnace Smelting Process under Hadoop Cloud Platform by Yang Han, Jie Li, Xiao-Lei Yang, Wei-Xing Liu, Yu-Zhu Zhang

“…Firstly, we propose a parallelization scheme to design an SVM solution algorithm based on the MapReduce model under a Hadoop platform to improve the solution speed of the SVM on big data sample sets. Secondly, based on the characteristics of stochastic subgradient projection, the execution time of the SVM solver algorithm does not depend on the size of the sample set, and a structured SVM algorithm based on the neighbor propagation algorithm is proposed, and on this basis, a parallel algorithm for solving the covariance matrix of the training set and a parallel algorithm of the tth iteration of the random subgradient projection are designed. …”
Get full text