Cloud Removal in Full-disk Solar Images Using Deep Learning by Zhenhong Shang, Peng Du, Zhenping Qiang, Runxin Li

“…Ground-based solar telescopes often encounter cloud interference during observations, leading to varying degrees of cloud cover in solar images. …”
Get full text

Mine cable partial discharge denoising method based on multivariate variational mode decomposition and improved wavelet threshold by Jiyuan CAO, Yanwen WANG, Peng CHEN, Xuan ZHOU, Weixiong ZHU, Yihe ZHANG, Le WANG

“…Finally, the exponential decay wavelet threshold function is constructed, which can quickly approximate the hard threshold function on the basis of overcoming the discontinuity of the hard threshold function and the constant deviation of the soft threshold function. …”
Get full text

GAT-Enhanced YOLOv8_L with Dilated Encoder for Multi-Scale Space Object Detection by Haifeng Zhang, Han Ai, Donglin Xue, Zeyu He, Haoran Zhu, Delian Liu, Jianzhong Cao, Chao Mei

“…According to the characteristics of space missions, an annotated dataset containing 8000 satellite and space station images is constructed, covering a variety of lighting, attitude and scale scenes, and providing benchmark support for model training and verification. …”
Get full text

Automatic picking method for ground penetrating radar wave groups at rough coal-rock interfaces by Ying TIAN, Chunzhi LI, Shuo CHEN, Zihao WANG, Fuyan LYU, Qiang ZHANG, Meng HAN, Chengjun HU

“…For the problem where the local trend of the coal-rock interface manifests as hyperbolas under specific geological conditions, amplitude attenuation models for rough coal-rock interface curves and interfering hyperbolas are constructed. By compensating for amplitude changes of co-curved anchor points while considering electromagnetic wave geometric diffusion effects, false detection of interfering hyperbolas is controlled. …”
Get full text

OTX2 expression contributes progression of gastric cancer in young adults by Jingming Zhai, Ting Lyu, Yimin Guo, Yanhui An, Yali Xiang, Linying Xie, Chao Zeng

“…CytoHubba is used to construct protein interaction networks (PPI) and perform visual analysis to screen out core genes. …”
Get full text

Event-Triggered Steering Control for Automated Vehicles With Prescribed Performance by Gang Luo, Pengxu Li, Ziliang Feng, Bingxin Ma

“…First, a prescribed performance function with fixed time convergence characteristic is developed to construct a feedback controller, in which the fixed convergence time and convergence accuracy are preset. …”
Get full text

Automatic Jig-Assisted Battery Exchange for Lightweight Drones by Aleksi Vilkki, Antti Tikanmäki, Juha Röning

“…The devised method was based around a separate jig, which would hold the drone in place during the exchange operation, where battery exchange itself was handled by the use of a robotic arm. The constructed prototype could exchange flight batteries in drones in under two minutes with reasonable perpetuity and reliability.…”
Get full text

Flexible Hydrophobic Paper-Based Microfluidic Field-Effect Biosensor Amplified by RNA-Cleaving DNAzyme-Based DNA Nanostructure for Mg²⁺ Detection by Hui Wang, Yue He, Zhixue Yu, Ruipeng Chen, Zemeng Feng, Dongfei Chen, Waleid Mohamed El-Sayed Shakweer, Fan Zhang, Xuemei Nan, Mukaddas Mijit, Benhai Xiong, Liang Yang, Xiangfang Tang

“…Flexible hydrophobic paper was synthesized by using cellulose paper and octadecyltrichlorosilane, improving mechanical strength and decreasing biological interference. To achieve high sensitivity, the Mg²⁺-specific RCD was functionalized with SWNTs, and then repeatedly self-assembled two different Y-shaped DNAs to construct a DNA nanostructure based on a similar DNA origami technique. …”
Get full text

Design and Calibration of Electron Stack Spectrometer for Diagnosing Hot Electron Temperature in Intense Laser-plasma Interactions by BO Nan1, 2, TIAN Baoxian2, WANG Haoran3, 4, WANG Naiyan2

“…However, the intense electromagnetic pulses (EMPs) and high-flux radiation produced during these interactions pose significant challenges to conventional electronic measurement techniques, often leading to signal saturation or interference. To address these issues, this study introduces the design, construction, and calibration of a passive electron stack spectrometer based on image plate (IP), specifically tailored for diagnosing hot electron temperatures in laser-plasma interactions. …”
Get full text

Dynamic spectrum allocation strategy with probabilistic feedback mechanism and performance analysis by Shun-fu JIN, Shi-ying GE, Zhan-qiang HUO

“…By introducing probabilistic feedback mechanism and energy detection threshold to cognitive radio networks,a novel dynamic spectrum allocation strategy is proposed to trade off the throughput and average delay of secondary users,as well as meet various network requirements.Considering the imperfect sensing results of secondary users,a kind of priority queueing model is established,in which two classes of users may interfere with each other,then the state transition probability matrix is constructed.Employing the method of matrix-geometric solution,the stationary distribution of system model is derived.Accordingly,the expressions for the performance measures in terms of channel utilization,throughput of secondary users,average delay of secondary users and interference ratio of primary users are given.With numerical experiments and system simulations,the effectiveness of the proposed dynamic spectrum allocation strategy is verified.Finally,the optimal design of energy detection threshold is provided.…”
Get full text

Dynamic spectrum allocation strategy with probabilistic feedback mechanism and performance analysis by Shun-fu JIN, Shi-ying GE, Zhan-qiang HUO

“…By introducing probabilistic feedback mechanism and energy detection threshold to cognitive radio networks,a novel dynamic spectrum allocation strategy is proposed to trade off the throughput and average delay of secondary users,as well as meet various network requirements.Considering the imperfect sensing results of secondary users,a kind of priority queueing model is established,in which two classes of users may interfere with each other,then the state transition probability matrix is constructed.Employing the method of matrix-geometric solution,the stationary distribution of system model is derived.Accordingly,the expressions for the performance measures in terms of channel utilization,throughput of secondary users,average delay of secondary users and interference ratio of primary users are given.With numerical experiments and system simulations,the effectiveness of the proposed dynamic spectrum allocation strategy is verified.Finally,the optimal design of energy detection threshold is provided.…”
Get full text

Research on Key Control Technology of Intelligent Rolling Contact Fatigue Test Facility by Jianyao Li, Juke Liang, Gubo Chen, Yan Yang

“…Based on the SIMOTION D425 which is the Siemens integrated motion control system, the control system architecture of the intelligent rolling contact fatigue test equipment is constructed. The solutions of slip ratio and the experimental load controlled by these methods are satisfactory with the requirement of design precision. …”
Get full text

Indoor millimeter-wave D2D communication modeling combining self-blockage and common blockage by Lei WANG, Xiao-ting YU, Ming-kai CHEN, Yi QIAN

“…The high transmission rate characteristic of millimeter wave (mmWave) technology can meet the requirements of large amount of data communications among intelligent devices for indoor scenario.While guaranteeing high throughput,reducing the interference simultaneously in a closed region is still a challenge.For indoor transmission,the human bodies are considered as main blockages besides common blockages.Thus,a new system model is presented,constructing the human body into a self-blockage model,while using multi-ball LOS link state model to describe the conventional blockage.The combination of the two will give a more comprehensive and accurate expression of indoor obstruction.The proposed model uses stochastic geometry to analyze system performance by giving a closed expression of coverage and rate.The simulation results show that the model is accurate to describe the distribution of blockages via the comparison between analysis and Monte Carlo simulations.…”
Get full text

Configuration Design and Topology Description of the Power Release Latch with Variable Topology Characteristic by Bai Lele, Hang Lubin, Liu Zhe, Miao Hong, Huang Xiaobo, Guo Hui, Chen Yong, Hua Yong

“…Aiming at the demand of dual branch chains cooperative drive of the electrical lock and the power release， also the non-interference between the multiple kinematic branch chains of the vehicle latch， a novel power release kinematic chain with the variable topological characteristic is constructed. …”
Get full text

Effect of Virtual Inertia Control on the Stability of Primary Frequency Regulation by YANG Yashu

“…In order to research and prove the support effect of virtual inertia control on stable grid frequency, it constructed a digital simulation model of 110 kV HVDC system, and utilized DC transmission capacitance to imitate virtual inertia and then put it into control system, thus the grid inertia was changed and the anti-interference ability of frequency was improved. …”
Get full text

Metro Traffic Flow Prediction via Knowledge Graph and Spatiotemporal Graph Neural Network by Shun Wang, Yimei Lv, Yuan Peng, Xinglin Piao, Yong Zhang

“…To address this issue, we propose a novel metro traffic flow prediction method (KGR-STGNN) based on knowledge graph representation learning. We construct a knowledge graph that stores factors related to metro traffic networks. …”
Get full text

Time-varying Reliability Analysis of Planetary Gear Reducers Based on Fatigue Failure by Luo Xundiao, Liu Ganhua

“…To solve this problem, firstly, according to the stress-strength interference theory, the time-varying reliability model of planetary gear reducers under fatigue failure (mainly tooth surface contact fatigue failure and tooth root bending fatigue failure) is constructed. …”
Get full text

A Blind Source Extraction Method based on Self-learned Dictionary and Its Application in Fault Diagnosis of Bearing Multi-type Fault by Xingguo Cheng, Pu Weng

“…A BSE based on sparse representation self-learned dictionary method is proposed to solve the above problem.Firstly，apply the self-learned sparse dictionary originating from sparse representation on the multi-type faults vibration signals directly and a set of self-learning dictionaries are obtained.Then，the multi-type faults vibration signals are re-constructed basing on the obtained learned dictionary to eliminate noise and interference signals.Finally，apply the BSE method on compound fault signals of reconstructed rolling bearings，each single fault signal of rolling bearing is extracted，and then the envelope demodulation analysis is carried out one by one to obtain the corresponding fault characteristics.Feasibility and effectiveness of the proposed method are verified through experiment.…”
Get full text

Modeling of the 2.4 GHz wireless channel path loss in substation by Qiang LI, Hongxin ZHANG, Jiaqi LUO, Yang LU, Jianqi LI, Yinghua LV

“…In order to assess the influence of electromagnetic interference in the substation of the electric power communication system,frequency measurement method was adopted to obtain the data of 2.4 GHz electromagnetic wave path loss of the substation of 110 kV and 220 kV in a certain city.By using the method of minimum mean square error (MMSE) and cumulative sum (CUSUM) to estimate the parameters of path loss model such as path loss index and the standard deviation,the path loss model was set up according to measured data,respectively.The simulation results show that the gap between estimation results and the measured values is not big.In addition,a ZigBee simulation system was constructed to simulate the relationship of bit error rate (BER) varies with distance in two cases of the signal to noise ratio (SNR) at 5 dB and 10 dB respectively.A research basis for short distance wireless communication devices decorated in the substation environment was provided.…”
Get full text

On the Holographic Spectral Effects of Time-Interval Subdivisions by Sky Nelson-Isaacs

“…Analogous to spatial holograms, where information is distributed across interference patterns, temporal intervals encode information as a discrete whole. …”
Get full text