bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on image quality Control Method based on Gaussian Noise
Authors: Ding Chao , Zhang Minghu , Gu Yi 
Published: September 2021

Abstract
At present, various image quality evaluation algorithms emerge in endlessly. The establishment of these algorithms, the performance evaluation of the system and the accuracy of evaluation results all need to be based on images of different quality as reference standards. This paper selects the peak signal-to-noise ratio as the characteristic parameter to measure whether the image quality changes, and uses the control image quality parameter to control the image quality. The experimental results show that the model can quickly and accurately obtain a large number of images with different distortion degrees, and control the image quality.
Study on Calibration Method for Testing During Burn In equipment of integrated circuits
Authors: Sun Chongjun , Ding Chao 
Published: September 2021

Abstract
In order to implement Method 1015 of GJB 548B, TDBI(Testing During Burn In) technology of integrated circuit is widely used in the aging process of core VLSI(Very Large Scale Integration) which is included of FPGA, DSP, CPU and dedicated chips. Many models of TDBI equipment at home or abroad have been come into use. It is an important task to calibrate TDBI equipment in system level and ensure the traceability of its measurement value. At present, the calibration device of TDBI equipment has been successfully finalized and put into production, which has the advantages of convenient use and high cost performance. This paper mainly introduces the calibration method for TDBI equipment of integrated circuit from the aspects of the overall architecture design, signal adaptation design and calibration software design.
Design and manufacture of customized products based on 3D printing technology
Authors: Yang Bingguang 
Published: September 2021

Abstract
3D printing technology, as a new manufacturing technology, has attracted more and more people’s attention, and the application field is more and more wide. 3D printing technology has broken the limitations of traditional manufacturing process and brought great advantages to the design and manufacture of customized products. This paper analyzes the current situation of private customized products, the principle and manufacturing process of 3D printing technology, the design method and manufacturing process of private customized products, and the application of 3D printing technology in the design and manufacturing of private customized products, and gives some opinions, hoping that 3D printing technology can better serve the design and manufacturing field of private customized products and promote it.
Design and finite element analysis of longitudinal vibrating stepped ultrasonic horn
Authors: Zhao J T , Ning L P , Jiang Z M , Li Y L 
Published: September 2021

Abstract
In this paper, a longitudinal vibration stepped ultrasonic horn was designed, and the size parameters of the ultrasonic horn were designed by theoretical calculation. In order to verify the rationality of the ultrasonic horn design, the finite element analysis software was used to perform a modal analysis on the horn, and the vibration mode and natural frequency of the ultrasonic horn within the design frequency range were obtained. The modal analysis results show that the natural frequency of the longitudinal vibration of the horn had a large error from the design frequency. Therefore, the size of the horn was optimized to make the natural frequency of the ultrasonic horn conform to the design frequency requirements. In addition, the optimized ultrasonic horn reduces the maximum stress which improves the safety and service life of the horn.
Application of Flow Field Analysis in the Process Design of Modified Microporous Aeration Oxidation Ditch
Authors: Xu Haodong , Qiu Yan , Yang Wei , Li Hai 
Published: September 2021

Abstract
According to the environment and water quality factors of the project location, an improved microporous aeration oxidation ditch process is designed, which has the characteristics of biochemical reaction of space division, microporous aeration, infinite water circulation in the ditch, and multiple water inlets; under simplified boundary conditions, based on the CFD method, the SSTK-W model is used to close the RANS equation to simulate the flow field in the hypoxic and aerobic areas. With the optimal equipment configuration and the lowest energy consumption, the flow velocity in the trench is more than 0.3m/s, to ensure high buffering capacity of the process; study the flow field state and the unfavorable flow velocity under the optimized operation state of the flow thruster; the rationality of the design is verified through the commissioning and operation of the sewage treatment plant.
Research on the relationship between workpiece surface machining quality and turning tool wear
Authors: Cao Min , Zhou Chen , Li KaiMing 
Published: September 2021

Abstract
In order to apply the workpiece surface machining quality detection data to tool wear prediction, an experiment on the relationship between workpiece surface machining quality and turning tool wear was carried out. Firstly, the experimental parameters are selected, and the workpiece surface quality is determined as the parameter to study the tool wear law; Secondly, by changing the tool material and workpiece material, the change law of tool wear is analyzed, and the internal reason of blade initial wear is revealed; Finally, the relationship between workpiece surface machining quality and tool wear is analyzed by measuring workpiece surface machining quality parameters. The experimental results show that the relative hardness of workpiece material and tool is the main factor determining the wear speed of tool flank, and the tool geometry is the main factor of rapid tool wear in the initial stage. The workpiece surface roughness increases gradually with tool wear. When the tool enters the severe wear stage, it decreases slightly and then continues to increase. The outer diameter of the workpiece decreases with the tool wear in the initial stage, and then fluctuates and increases gradually. The influence of tool wear on the cylindricity error of shaft parts can be ignored.
A Blade Dynamic Strain Inversion Method for Rotating Blades Based on Blade Tip Timing
Authors: Guo Haonan , Yang Yongmin , Guan Fengjiao , Hu Haifeng , Shen Guoji , Bian Zifang , Teng Guangrong 
Published: September 2021

Abstract
Based on the vibration response transfer ratio and Natural Neighbor Interpolation (NNI), the research on the noncontact inversion method of dynamic strain of high-speed rotating blades is carried out. The high-speed rotating blade is analyzed through the motion equation, and the correction method of the transfer ratio is proposed through NNI. The three-dimensional model of the rotating blade is established, and the Finite Element Analysis (FEA) considering stress stiffening is carried out to obtain the transfer ratio between the blade tip displacement and the blade strain at a certain speed. The vibration experiment of the high-speed rotating blade is carried out, and the blade tip displacement and the dynamic strain of the key points of the blade are obtained based on Blade Tip Timing (BTT) and strain gauges. The experimental data are processed to obtain the actual transfer ratio of the key points of the blade, and the theoretical transfer ratio is corrected based on NNI. The results show that when the 1st-order resonance of the rotating blade occurs at the rotating speed of 7960RPM, the strain inversion error of the test point can be reduced to less than 5%, which verifies the proposed correction method. Therefore, the blade dynamic strain can be inverted more accurately based on BTT.
Design of humidifier test system for proton exchange membrane fuel cell
Authors: Wang Xu , Li Hongshuang , Yin Ruoyu , Li Chenglong 
Published: September 2021

Abstract
Humidifiers are often used in the system of fuel cells to ensure the continuous and stable working operation. In order to evaluate the performance of the same humidifier under different operating conditions, this paper proposes a test system for proton exchange membrane fuel cell humidifier (PEMFC). In this paper, the study factor is gas flow rate. During the test process, the system simulates the working condition of the humidifier in the fuel cell system, and measures the dry-and-wet bulb temperature and the pressure flow at the outlet of the dry side of the humidifier with different gas flow rate. Finally, calculated relative humidity, determines the water permeability of the humidifier membrane. And the main factors affecting the humidification effect of the humidifier was analysed. According to the test results, compared with the relative mass transfer time, heat transfer has more effect on the humidification effect.
Design of Intelligent Security Early warning system for unguarded railway crossing in mining area
Authors: Zhu Shilin , Meng Xiangzhong 
Published: September 2021

Abstract
There are many railway crossings in the mine, but there are not enough people to keep every crossing manned. For the traditional unguarded railway crossing, we set up a warning sign at a certain distance from the crossing to remind pedestrians and drivers. For some crossings with poor vision, both pedestrians and locomotive drivers at the crossings can’t make timely and accurate judgment on the surrounding real-time road conditions, which is easy to cause safety accidents. In order to solve this technical problem and demand, an intelligent security and early warning robot with image recognition module and intelligent control board was developed by combining advanced theories and technologies such as Internet +, image recognition, beidou+ GPS dual-mode positioning, wind and solar complementary power generation and multi-sensor fusion. The system can improve the intelligent level of the unguarded crossing in the mining area, realize the unmanned or less unmanned crossing work, and ensure the safety of railway transportation in the coal mine.
The load sharing structure design and FE analysis of planetary gearbox with flexible pin
Authors: Yin Huabing , Tang Pei , Zhou Ruyi , Xing Qinkun 
Published: September 2021

Abstract
The paper first introduced the unequally load sharing in the planetary gear set and explained the cause of unequally load sharing in traditional design. Then a new floating structure of planetary gear with flexible pin has been designed to improve unequally load sharing of planetary gear set. In order to verify the flexible pin structure effects on the load sharing, two integrated finite element models have been built. Each one consists of two coupled planetary gear sets. One finite element model has been built with flexible pin structure and the other with fixed pin. The same load and boundary conditions have been applied to the two different finite element models. After analysis, the vonmises stresses of different parts such as ring gear, planetary gear, bearing and pin etc. in two different models have been compared. From the analysis result verification, the maximum vonmises stress of flexible pin of planetary gear set is much higher than that of planetary gear set with fixed pin in different mesh position. Although it is in the design range of material strength, its increase indicates that flexible pin structure makes the higher unequal mesh load of planetary gear shared with other pinions, the deflection of flexible pin make the load sharing with other pinions possible. Whereas the maximum vonmises stresses of other parts such as ring gear, planetary gear, bearing and sun gear decreases in a certain degree with the flexible pin deflection. It really indicates that the effect of flexible pin in the planetary gear set is obvious against fixed pin. When the higher unequally sharing load becomes smaller, maximum vonmises stresses of all planetary gear set parts except flexible pin become smaller and safer.
The Computer Numerical Control System Design for the Saddle Surface of the Flange Connection Processing Plant
Authors: Qian Ruiwei , Feng Yan , Ren Yongfeng , Yang Dongfang 
Published: September 2021

Abstract
It is required to construct huge hydrocracking units in order to boost the revenue from refined goods. The barrel welding receiver skirt has a saddle-shaped surface in the reactor processing of the barrel welding receiver skirt, and the processing process is getting increasingly complex. In order to enhance the welding quality of the skirt to the actual form of the receiver as the size and wall thickness of the receiver grow, it is important to develop the CNC system for welding the skirt to the actual shape of receiver. It talked about the manufacturing plan, the hardware circuit, and the software flowchart, to name a few subjects. Finally, the C programming language and the assembles programming language are utilized to implement the manufacturing flowchart in uVision3. Protues8 is responsible for the implementation of the hardware circuit. It is demonstrated by the simulation results that the proposed design plan for the CNC system is technically possible.
Design and application of water gun for pre-cleaning exposure footwear and helmet
Authors: Xia Jianjun , Wang Hongyang , Bao Zhiming , Jing Lishuai 
Published: September 2021

Abstract
The hard equipment of exposure footwear and helmet should be cleaned thoroughly to keep firefighter’s healthy. To balance the relationship between effective removing of contamination and equipment’s well preserved, new water gun with suitable air pressure was studied. Firstly, the water gun containing flow stabilizer part, venturi part and jet-flow part was designed for pre-cleaning step. Secondly, the contaminating and cleaning experiments were carried out by introducing new water gun. Thirdly, the result data was analyzed using histogram graph and the conclusions were obtained. This new water gun for pre-cleaning could remove contamination like mud effectively avoiding any damage. Further study should focus on removing the hard equipment’s oil stain in the washing step.
Research and application of double-row steel sheet pile stability in soft soil foundation
Authors: Huang Chao-xuan , Liu Yue , Yao Zhi-wei , Li Jun-jie , Xia Yong 
Published: September 2021

Abstract
In view of the complex stability calculation of double-row steel sheet piles in soft soil foundation, based on the theory of soil mechanics, the control analysis was carried out from the aspects of anti-uplift stability, overall anti-slip stability, anti-overturning stability, and overall sliding stability of the sheet pile. By theoretical derivation and calculation, the calculation formula of the minimum penetration depth Ld of steel sheet piles is given. Taking the double-row steel sheet pile cofferdam project of the sluice of the Oufei Reclamation Project in Zhejiang Province of China as a case, according to the formula in this paper, the recommended minimum depth of soil penetration is 17.01m, which is basically the same as the actual design value of 18.50m. Combined with the finite element soft foundation, the comparative analysis of simulation calculation results and the measured horizontal displacement monitoring data of steel sheet piles provides references for related engineering applications.
The Influence of Surface Texture on Tribological Characteristics of Water-lubricated Rubber Bearing
Authors: Wang Huanjie , Liu Zhenglin 
Published: September 2021

Abstract
To study the effect of surface texture on the tribological characteristics of ship’s water-lubricated rubber bearings, the surface texture modification technology is applied to the friction surface of the lining, and the tribological characteristics of the surface texture are studied. The tribological characteristics of the flow field, such as velocity change, water film pressure distribution, and the influence of water film thickness on the surface texture flow field were discussed by simulation analysis. The results show that the average velocity is decreased on the texture surface, and the water film pressure obtained by the inclined cylinder pitted surface texture is the least.
Design and study of new riser dynamic load compensation device test system
Authors: Wang Zhikun , Zhang Yanting , Wang Ruifeng , Huang Lumeng 
Published: September 2021

Abstract
To ensure the safety of the riser, a kind of new riser dynamic load compensation device is used in this paper, which can effectively reduce the dynamic load of the riser. At the same time, according to a certain similarity criterion, the riser dynamic load compensation test system was designed, including heave simulation system, load simulation system and compensation system. The co-simulation model of the system was established by using ADAMS and Simulink, and the effects of accumulator volume, precharge pressure, piston rod area of compensating hydraulic cylinder and throttle time constant on the system performance were analyzed. The simulation results show that the dynamic load compensation device has a certain compensation effect.
Research on Energy Efficiency Design Index Calculation Method for the Hybrid Ship
Authors: Wang Zhifang , Yang Zixuan , Xiao Shuming 
Published: September 2021

Abstract
The Marine Energy Efficiency Design Index (EEDI) is recognized as an effective tool to measure the level of carbon emissions from ships at home and abroad. It will play an important role in the assessment of carbon emissions from the shipping industry, especially under the current and future development goal of carbon neutrality. Various green technologies to reduce the carbon emissions of ships have been demonstrated and applied. Hybrid power system is one of them. Compared with traditional direct propulsion, it can significantly reduce the energy consumption and carbon emissions of ships in inland waters such as the Yangtze River. Based on the characteristics of the hybrid power system, this paper firstly analyzes the power types of the hybrid power system during ship navigation. Then, according to the principle and elements of EEDI calculation method, it puts forward the key problems that should be solved in ship EEDI calculation of hybrid power system. Then, according to different hybrid operation modes, it also puts forward the calculation method of EEDI of each power mode and the calculation method of acquired EEDI of hybrid ship. Finally, the calculation and analysis of a 7500DWT hybrid bulk carrier show that the EEDI calculation method for hybrid ships proposed in this paper is scientific and reasonable.
Semi-Adaptable Human Hand Motion Prediction Based on Neural Networks and Kalman Filter
Authors: Wang Juxing , Shen Linyong 
Published: September 2021

Abstract
This paper focuses on predicting trajectories of the human hand in order to improve the safety for human-robot interactions. In this work, the position and orientation are represented by two curves in the operation space such that the same algorithm can be used for both position and orientation prediction. The motion prediction is achieved in two steps. Firstly, the neural network (NN) model is applied for offline training to model the human hand motion. Secondly, the Kalman filter is added to adjust the weight coefficients of the NN model’s output layer online when a set of new data is measured, such that the NN model is adaptive to new data. An experiment study has been conducted to validate the effectiveness of the proposed algorithm. The result shows that the proposed algorithm achieves a higher prediction accuracy and requires a smaller amount of data to achieve optimal performance compared with the advanced method.
Research on YOLOv3 target detection model in the field of remote sensing
Authors: Yang Yao , Huang Cong , Wang Huajun , Wan Jun , Wang ZhenHeng , Ma Yu 
Published: September 2021

Abstract
The target recognition problem of high-resolution remote sensing images is marine traffic monitoring, disaster reduction emergency search and rescue, unmanned autonomous systems (UAS) (such as unmanned aerial vehicles, unmanned vehicles, unmanned submersibles, unmanned surface craft and other autonomous robots) and other civilian applications. The core technology of the system is also the key technology of military automatic target recognition (ATR) systems such as military reconnaissance, precision guidance, and maritime monitoring. With the development of high-resolution earth observation systems, more and more industrial applications require the extraction of more valuable target details from high-resolution remote sensing images. Then, due to the complex background of high-resolution remote sensing images and the difference in image quality (factors such as size, resolution, noise, etc.), low target detection accuracy and slow speed are the main bottlenecks that affect the combination of artificial intelligence and remote sensing. In order to solve the technical bottleneck of target detection, this paper focuses on exploring the detection performance of the channel attention module SElayer and YOLOv3 model in the field of high-resolution remote sensing images, providing basic technical support for related research.
A Lightweight Private Internet of Things Remote System and its Micromixing Application
Authors: Fu Hai , Yang Tianhang , Jia Weiliang , Li Songjing 
Published: September 2021

Abstract
Most current Internet of Things systems face many problems like privacy leakage, information island and low application value, because they are designed from the perspective of Internet of Things service providers. However, the practicality and privacy security of Internet of Things services are more important from the perspective of Internet of Things system users. Considering that there aren’t too many Internet of Things devices to use and manage for ordinary people and service, a more service-oriented architecture of the lightweight private IOT remote system is proposed in this paper. To verify this system, verifications like remote sensors, remote actuators, and a micromixing application are developed and illustrated. Owing to its distributed server architecture, this system has high flexibility, practicability, parallelism, and low coupling. This novel system architecture provides a new perspective to develop practical valuable private Internet of Things services.
Design and implementation of face recognition system based on convolutional neural network
Authors: Ma Yu , Wang HuaJun , Wan Jun , Wang ZhenHeng , Yang Yao , Huang Cong 
Published: September 2021

Abstract
The main features of face recognition are easy to use, quick to update, high flexibility, high accuracy, high environmental adaptability and so on. This passage of facial recognition technology based on convolutional neural network, which combines the present popular Python and Opencv Keras to identify development system, will make face recognition more efficient and more intelligent. And convolutional neural network based on face recognition data can improve accuracy and reduce the error rate through training. This experiment makes efforts to perfect the training model and enhance the influence of face recognition, so it could be more influential and smarter in higher precision applicable areas.