bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Overview of Video Super-Resolution Algorithms
Authors: Liu Chenming , Gang Ruipeng , Li Jinjing , Fang Ji , Yu Haodong 
Published: September 2021

Abstract
We investigate some excellent algorithms in the field of video space super-resolution based on artificial intelligence, structurally analyze the network structure of the algorithm and the commonly used loss functions. We also analyze the characteristics of algorithms in the new field of video space-time super-resolution. This work helps researchers to deeply understand the video super-resolution technology based on artificial intelligence.
Research on H
∞ Preview Control Algorithm for Industrial Wireless Sensor Networks
Authors: Shi Yuanbo , Huang Yueyang , Hou Shaojing , Wu Yinghao 
Published: September 2021

Abstract
In order to solve the problem of wireless sensor network control system with network delay and packet loss, a H
∞ preview control algorithm is designed. Firstly, the wireless sensor network model with delay and packet loss is established, and the system error and predictable target signal are introduced to construct the extended error system. Secondly, the state feedback controller with memory is designed. By constructing Lyapunov function and linear matrix inequality, the design method of H
∞ controller and the sufficient conditions for the stability of the system are derived. The optimal H
∞ preview controller algorithm is obtained by solving the LMI optimization problem. Finally, the effectiveness of H
∞ preview controller algorithm is verified by simulation.
A Novel Steganography Scheme for Color Image Based on HLS Translation
Authors: Shao Guoqiang , Jie Longmei , Shen Dan 
Published: September 2021

Abstract
In recent years, steganography has attracted extensive attention, but most of steganography schemes are aimed at grayscale images. Therefore, a novel steganography scheme for color image based on HLS translation is proposed in this paper. Firstly, the color cover image is decomposed from RGB three channels to HLS three channels. Then the image of H channel is selected as the cover image for embedding secret information due to its texture feature of original image. The universal distortion function UNIWARD is utilized to embed the secret information into the image of H channel. Finally, the steg image transmitted in common channel is obtained by inverse HLS transform using the single channel image embedding the secret information. The extensive experimental results indicate that our scheme has high security and can also resist the detection of steganalysis schemes based on CNN.
GSW: A High Performance IQA Index Based on Global and Saliency Window Similarity
Authors: Fan Yibo , Meng Zihao 
Published: September 2021

Abstract
Perceptual image quality assessment (IQA) attracts significant attention in recent years. It is proved that both global score and an image’s visual saliency (VS) are consistent with subjective evaluation. The global quality score reflects the consistency of the overall structure between two images, and VS map contributes complementarily in evaluating perceptual quality. This paper presents an effective IQA index based on global and saliency window similarity, namely GSW. It chooses VS map as an image feature and uses a special strategy to draw the saliency window with largest significancy. Meanwhile, the background area is taken into account to guarantee the robustness of the quality score. Experimental results on four most widely used databases verify that, compared with state-of-the-art IQA methods, GSW performs consistently well can provide more accurate quality prediction with a low computational complexity.
Research on Unbalanced Sample Segmentation of Remote Sensing Image
Authors: Li Yanping , Wang Lu , Zhang Lei , Wang Shiying , Chen Haiwen , Zhu Xiaolan 
Published: September 2021

Abstract
This article proposes a framework for the unbalanced sample segmentation of remote sensing images on an open data set. For the few sample categories, improved by converting it into binary segmentation and combining with weighted cross-entropy loss, and then merged with the segmentation result of the sufficient sample categories. Finally, the mIoU (mean Intersection of Union) of the 8 categories is increased by 4.5% compared to the results before the improvement, especially, the results of the few sample category road and grassland are increased by 10.2% and 9.7%. The experiments show that the framework can greatly improve the segmentation performance of the few sample categories, and have a good guiding significance for the problem of multiclass unbalanced sample segmentation.
Research on Security Protection Technology of Digital Library System in the Era of Equal Protection 2.0
Authors: Li Zhijie 
Published: September 2021

Abstract
New Coronavirus pneumonia is eroding the world, and digital libraries are even more important. How to control the network security of digital library system? According to the requirements of equal protection 2.0, this paper analyzes the security requirements of digital library network, and puts forward the security protection technology of digital library system under equal protection 2.0 system from the four perspectives of secure communication network, secure area boundary, secure computing environment and security management center. Based on the security protection technology framework of equal protection 2.0, this paper studies the security evaluation method of digital library, and puts forward the security protection technology solution.
Research on the Relationship between Engine Drag Torque and Cylinder Compression Pressure Based on Regression Analysis
Authors: Kang Hao , Zhou Min 
Published: September 2021

Abstract
This paper first proposes that cylinder tightness is an important factor affecting engine performance, which can directly reflect engine technical conditions. Cylinder tightness directly affects cylinder compression pressure, and cylinder compression pressure directly affects engine drag torque. Then, based on the test of real engine, the formula of the relation between the drag torque and the compression pressure is obtained by using the method of linear regression analysis, which provides a real and effective new method and means for inspecting the cylinder sealing. Data is obtained by preliminary analysis was carried out on the data of the basic characteristics, contact, and then use regression model to establish correlation between variables, with the method of mathematical model to describe the relation between resistance torque and compression pressure, through the relationship to provide scientific and effective in sealing cylinder detection method, make forecasting data more real and effective, More guidance for cylinder maintenance and state detection.
Application Research on Extreme Learning Machine in Rapid Detection of Tool Wear in Machine Tools
Authors: Wu Q , Liu E , He Y H , Tang X 
Published: September 2021

Abstract
In order to put an end to the product quality accidents caused by cutting tool breakage or severe wear in machining process, the paper explored an ELM model detection method based on voice recognition. In this paper, firstly it analysed the features of cutting sound signal in time-frequency domain, then discussed the extraction method of tool working state sensitive spectral energy statistical feature based on wavelet packet decomposition, and finally constructed an ELM fast detection model based on sound feature recognition. The experimental results demonstrated that the ELM detection model could achieve higher detection accuracy and faster response time. The simulation results show that the ELM model is effective and applicable in detecting tool wear with the help of sound recognition.
Improving Cross-Project Defect Prediction with Weighted Software Modules via Transfer Learning
Authors: Chen Yizhou , Dai Heng 
Published: September 2021

Abstract
Cross-project defect prediction is investigated to resolve the trouble that software program defect prediction besides historic data. However, there are differences in distribution of software metrics of different software projects, which decreases the overall performance of cross-project defect prediction. This research presents a transfer learning-based cross-project fault prediction approach. The weights of the training software modules are determined by analogy with gravity and compared to those in the test set. The costs associated with different prediction errors are considered. Cost-sensitive C4.5 is employed on weighted training data for cross-project defect prediction. 10 projects from NASA are used in our experiments. Our suggested technique delivers promising cross-project defect prediction results, according to the results, 0.81, 0.41 and 0.8 in average PD value, F-measure value and AUC value, which are best compared to Naïve Bayes based cross-project defect prediction.
3D Indoor Scene Completion via Room Layout Estimation
Authors: Xia Wei , Lu Rongfeng , Sun Yaoqi , Xu Chenghao , Lv Kun , Jia Yanwei , Zhu Zunjie , Zheng Bolun 
Published: September 2021

Abstract
Recent advances in 3D reconstructions have shown impressive progress in 3D indoor scene reconstruction, enabling automatic scene modeling; however, holes in the 3D scans hinder the further usage of the reconstructed models. Thus, we propose the task of layout-based hole filling for the incomplete indoor scene scans: from the mesh of a scene model, we estimate the scene layout by detecting the principal planes of a scene and leverage the layout as the prior for the accurate completion of planar regions. Experiments show that guiding scene model completion through the scene layout prior significantly outperforms the alternative approach to the task of scene model completion.
Research on Dual-Mode Communication Technology Based on Power Line Carrier and Micro Power Wireless
Authors: Long Yan , Chen Yongli , Zhang Xudong , Xiao Deyong , Li Zheng , Tang Xiaoke 
Published: September 2021

Abstract
At present, the power meter reading system mainly uses the single power line carrier meter reading mode or the single micro power wireless meter reading mode. Due to the disadvantages of the two modes, the single meter reading mode can not meet the meter reading under different environmental conditions. In order to improve the success rate of communication, this paper puts forward the dual-mode communication technology of power line carrier and micro power wireless integration, which is based on the power line carrier It overcomes the defects of single meter reading mode and improves the real-time performance, reliability and success rate of meter reading.
Research on Role Access Control Model Based on Identity Authentication
Authors: Chen Ling 
Published: September 2021

Abstract
Cryptography and access control are the core technologies for a secure operating system. Cryptography can guarantee the confidentiality, integrity, availability and unforgeability of information in the access control system. In the identity-based cryptosystem, the user’s private key is centrally generated by the key distribution center, and key escrow is a major security risk. In view of this problem, it is proposed that multiple trusted entities participate in the key distribution scheme in a serial manner. At the same time, this paper adds a separate blind factor to each user to increase security of the scheme; it also introduces the concept of virtual key, which uses additivity of the key space in the pair-based encryption scheme. In key generation, a timestamp T is added, which enables one-time pad of the system, enhances security of the system, and eliminates collusion attacks by KGC and multiple KPA. Finally, the improved signcryption scheme is combined with the RBAC model, and the I_RBAC model is proposed, which enables identity authentication and information confidentiality of users in simple communication in the RBAC model. Finally, the efficiency and safety of this scheme are analyzed.
A Software Defined Network Scheme for Intra Datacenter Network Based on Fat-Tree Topology
Authors: Hu Siquan , Wang Xinyu , Shi Zhiguo 
Published: September 2021

AbstractNowadays datacenters face a big challenge, because the development of cloud services requests a large amount of capital input, high maintenance skills and cost. The major disadvantages of current datacenter network include the high cost of equipment and maintenance, QoS, failure recovery time, network virtualization etc. In this paper, we proposed a software defined datacenter network. The programmable controller is responsible for the management of the traffic scheduling including topology discovery, routing and Quality of Service. The SDN is based on Fat-tree network architecture and max-min fairness. A Genetic Algorithm optimized Radial Basis Function neural network is used to compute the service weight for maximizing the utilization of network resource. An experiment of the network bearing different kinds of services based on Openflow is described. This well-designed fat-tree network has high efficiency in traffic distribution, and has integrated the traditional network architecture and new SDN technology.
Research on Overload Signal of New Impact Body Based on Air Cannon Test and Simulation
Authors: Tang Tong , Ma Shaojie , Li Feiyin , Wei Jian , Shi Huifa , Zhang An 
Published: September 2021

Abstract
Air cannon simulation test method is a common method to generate high overload signal. In this paper, a new impact body model for air gun test is proposed. Based on the model, the impact dynamic theory is analysed, and the variation law of high overload signal in accelerometer due to multiple reflection and transmission of stress wave in the impact process is studied. The finite element model is established by using ANSYS / LS-DYNA software to simulate and analyse the impact process, and a test platform is built to verify the simulation. The test results and simulation results show that the impact body can generate a “W” shape high overload signal during the impact process, which also verifies the rationality of the theoretical analysis. The methods and conclusions of this paper have certain significance for the study of the new type of impact body and the high overload signal produced by the impact test.
Development of Tailings Pond Flood Routing Simulation System Based on LabVIEW
Authors: Cui Yiyuan , Mei Guodong , Wang Yali , Wang Shan 
Published: September 2021

Abstract
Flood routing is an important work for tailings ponds to flood control. Although the flood routing method is relatively mature, the manual calculation and parameter selection still remain a major challenge for field engineers. In this study, a program, developed by LabVIEW, is introduced to improve the tailings ponds flood routing calculation. The developed program provides two flood generation calculation methods and four kinds of flood discharge model, which can be applied to any tailings pond and achieves flood routing fast and accurately. An application of Dexing 4# tailings pond is conducted to verify the function of program. The result indicates that the program shows good performance on calculation speed and accuracy.
Application of modeling and analysis technology of mechatronics system in mechanical engineering
Authors: Wang Dawei 
Published: September 2021

Abstract
In the context of the rapid development of the global economy, different enterprises in the process of development, will be fully applied to various economic order, which improves the comprehensive competitiveness of enterprises. The innovative application of mechatronics system in mechanical engineering industry can promote the modernization and information development of mechanical engineering industry to a certain extent. In this process, we need to ensure the efficiency and reliability of mechanical design, so as to solve various problems existing in the design of the current mechanical system and electronic system. At present, in the development process of mechanical engineering, to fully apply the modeling and analysis technology of mechatronics system, it is necessary to understand the corresponding application principles, build the modeling and simulation application platform of mechatronics system, and carry out the joint simulation analysis of mechatronics products. Only in this way can we effectively solve various problems existing in the process of electromechanical operation of the model and ensure the design level of mechanical engineering.
Kinematic and Dynamic Characteristics in a Crank-rocker Four-bar Linkage
Authors: Chen Shutong , Shen Xiushi , Ye Chuwei 
Published: September 2021

Abstract
Planar four-bar linkage is widely used in mechanical engineering. The degree of freedom of the linkage is one, and different organizations of the lengths of the four bars could distinguish it in several different types. The one is the crank-rocker mechanism. The parameters decided by the lengths of the bars are the wiping angle, transmission angle, and the quick-return ratio, which were analyzed in this report. Then the three-dimensional model and the physical model were built. In addition, the kinematic characteristics of the prototype were deduced by simulation, and some experimental works researched dynamic characteristics. Finally, the conclusions about the linkage were made.
The investigation of stability enhancement within a two-stage compressor utilizing the non-asymmetric stator
Authors: Zhao Jiayi , Yang Dangguo , Lu Qingfei 
Published: September 2021

Abstract
As the compressor plays a key role in the marine-used gas turbine, its stability determines the operation condition of the power engine of the ship. The paper investigates the performance improvement of the compressor by utilizing a new-designed asymmetric stator. The results show that the flow distortion upstream is significantly constrained by the developed stator and the unsteadiness of the static pressure coefficient and Mach number at R2 inlet decrease by 74% and 48% respectively.
Research on Redundant Design Technique for USV Autonomous Control System
Authors: Huang Wenbin , Xu Hao , Feng Jiaxiang , Wang Lifeng 
Published: September 2021

Abstract
In the field of USV autonomous control system design, redundant design technology is the important method to improve system reliability. In order to solve the problem of insufficient reliability when USV carrying out long endurance and open sea task, this paper analyzes the critical design elements of autonomous control system redundant configuration, presents a high reliable hybrid redundant structure for USV autonomous control system, and realizes redundant strategy and fault-tolerant control. This paper forms the USV autonomous control system redundant configuration scheme comply with the fault-tolerant capability and redundant rank of USV autonomous control system. Redundancy management strategies and algorithms are used to implement USV autonomous control based on hybrid redundant design. The reliability analysis and computation validate task reliability of the autonomous control system based on hybrid redundant structure.
Fluid-structure interaction Simulation for Hydro-elastic Performance of marine Propeller at Full-Scale
Authors: Qian Zhipeng , Ji Nan , Yang Guang , Shu Linzhao 
Published: September 2021

AbstractIn this study, CFD-FEM bi-directional fluid structure interaction (FSI) methodology using STAR-CCM+ is adapted for the hydro-elastic interaction simulation of the propeller at full-scale. To validate the FSI simulation reliabilities, the open-water curve of the rigid and NAB propellers VP1304 at model scale are computed. Then, the propeller KP505 is employed for the open-water test to study scale effect and hydro-elastic performance. The change of thrust coefficient, torque coefficient, efficiency, stress distribution, deformation are presented. From the results, the hydrodynamic difference due to scale effect and hydro-elastic performance are observed. Analysis of structural response of NAB propeller shows that scale effect plays a role.
Experimental study on enhanced heat transfer tubes in falling film evaporation
Authors: Zhang Zhao , Wang Xuesheng , Chen Qinzhu , Zhang Ting 
Published: September 2021

Abstract
The vertical tube falling film evaporation experimental platform was built, and the falling film evaporation heat transfer experiment was carried out. Comparative study was carried out between two types of enhanced heat transfer tubes, which are converging-diverging tube and the transversally corrugated tube, to explore their heat transfer characteristics of falling film evaporation. The results show that the falling film evaporative heat transfer coefficient of the two tubes increases with the increase of the unit peripheral flow rate, the heat transfer temperature difference, heat flux and the Reynolds number of the flash steam. The falling film evaporation heat transfer coefficient of the converging-diverging tube is about 1.09 times that of the transversally corrugated tube. According to the experimental data, the falling film evaporation heat transfer correlations of these two types of tubes were obtained. These results provide a useful reference for the using of transversally corrugated tube and converging-diverging tube in vertical falling film evaporator.
Control Circuit design of permanent magnet synchronous motor control system based on DSP
Authors: Sun Zhangjun , Ren Wu , Liu Le , Duan Chao , Li Lin 
Published: September 2021

Abstract
This paper introduces the design and implementation of hardware circuit of permanent magnet synchronous motor Servo Controller Based on DSP.In this scheme,TMS320F28335 is used as the control core, and drv8312 is used as the three-phase motor driver chip. The main control circuit, communication circuit, drive circuit, current feedback circuit and protection circuit are designed in detail. The reliability of the control circuit is verified by experiments, and the servo control of PMSM is realized.
Study on the characteristics of grinding fluid in extrusion grinding machining
Authors: Yang Zhong , Zhen Yangshu , Tao Yu 
Published: September 2021

Abstract
Extrusion grinding machining (EGM) has become a key technology in the post-processing of micro-hole in the injector nozzle. In this paper, the pure slurry prepared from organic bentonite and the pure slurry after adding abrasive as experimental objectives, and the correlation performance has been carried out. Results showed that both pure slurry and slurry abrasive have good shear thinning characteristics, belong to pseudoplastic non-Newtonian fluid, and their rheological properties obey the power-law model. The pure slurry after stirring and shearing can restore the reticular structure in a short time, which proves that it has excellent thixotropy and meets the conditions of circulating processing of grinding fluid. In addition, the pure slurry and slurry abrasive also have good sedimentation stability, suspension capacity, and dispersion properties.