bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis on the Application of Modern Building Exterior Wall Materials in Interior Design
Authors: Ye Wujun 
Published: October 2019

Abstract
Analyze materials from the perspective of the application of new modern building exterior wall materials, especially the technical value and aesthetic value of plastic materials and ceramic tile materials applications, as well as the close connection between materials, technology and art in interior design. Interior design is a comprehensive project that combines technology and art, not only requires a standard design implementation process, but also the pursuit of creative and imaginative design concepts and connotations. Because materials are the only medium, interior design materials that combine design techniques and design art are used to support design. The development of new materials is not only a huge advancement in the use of materials, but also promotes the innovation of interior design, and promotes the advancement of ideas and technology.
Public Security Command and Warfare System Based on Bei-Dou Positioning Service
Authors: Cheng Weiwei , Shan Kunyang , Liu Guicheng , Yang Xingchao 
Published: October 2019

Abstract
Facing the increasingly serious anti-terrorism situation and the need to maintain public security, and breaking through the shortcomings of the traditional flat command operation mode, we designed a set of Bei-Dou location service as the core, integrating existing network resources, IT infrastructure and video surveillance infrastructure. An all-round, multi-level public security command and combat system integrated with the investigation and command business needs. The design and application of the system start from four different angles. Firstly, the main contents of the system construction are introduced theoretically. Then the function design of the software is described in detail. Finally, the application of Bei-Dou system and 5G communication in the single-handle handheld terminal is expounded. Scenes. The system integrates functions of information collection, command and dispatch, tracking and monitoring, and multi-level linkage. It introduces data large screen and 5G communication technology, enhances the big data visualization function of the command system and the stability of the communication link, and can modernize the national defense. Construction provides technical support and platform support.
Variable sampling processing and frequency domain analysis of sound signals
Authors: Zhu Yifei 
Published: October 2019

Abstract
This paper describes the transition from analog to digital signals, and the relationship between the angular frequency of continuous-time signals and the digital angular frequency of discrete-time signals. In this paper, the frequency domain expression of the signal after the upper sampling (interpolation) and down sampling (decimation) of the digital signal is strictly derived theoretically. In the frequency domain, the spectrum of the L-sampled signal can be obtained by shrinking the original signal spectrum by L times, the amplitude is constant, and the image frequency is generated within the original period length. Under the premise that no signal distortion occurs under M times, the frequency domain is widened by M times relative to the original signal frequency domain, and the amplitude changes nonlinearly. In this paper, MATLAB is used to perform up-and down-sampling and distortion processing on sound signals to verify the correctness of theoretical frequency domain changes.
Research on Task Assignment Model and Algorithm of Online Picking System Based on Multi-objective
Authors: Zhang Jianyun , Wang Zhuan , Xiao Xiang 
Published: October 2019

Abstract
In view of the task assignment problem of the picking station in the online Parts-to-Picker Picking System, a mathematical model was established that targeting the minimum number of total rounds of the bins and the equalization of the picking of each station, constrained by the uniqueness of the order attribution and the maximum amount of orders processed by the workstation. Then, the solution flow and method of multi-objective function problem based on Genetic Algorithm are designed. The algorithm constrains the secondary objective function and defines the rules of the objective function constraint. Finally, an empirical study on the actual Parts-to-Picker System of an e-commerce enterprise is carried out. The results show that the algorithm can effectively reduce the two objective function values and verify the effectiveness of the algorithm.
Dynamic characteristic analysis of a high-speed small piezoelectric turntable
Authors: Xue Shan , Guo Jianbo , Liu Zhengbin , Li Guangqing , Lv Qiongying 
Published: October 2019

Abstract
Fast motion of piezoelectric turntable is an important guarantee for fast target locking and tracking of imaging system. Vibration of piezoelectric turntable in fast motion will seriously affect imaging quality and even damage imaging system. Therefore, the three-dimensional model of high-speed small piezoelectric turntable is built by SolidWorks software, and the finite element model is established by ANSYS software to analyze the dynamic characteristics of the piezoelectric turntable. The natural frequencies and modal modes of the turntable are obtained by modal analysis. On this basis, the harmonic response analysis is carried out, and the amplitude-frequency characteristic curve of the piezoelectric platform is obtained. The analysis results show that the dynamic characteristics of the designed high-speed small piezoelectric turntable meet the design requirements, and there will be no resonance.
Research on Evaluation Methods of Firing Precision of Trajectory Correction Projectile
Authors: Song Xieen , Gao Min , Wang Yi , Wu Hanzhou , Cui Xinhan 
Published: October 2019

Abstract
As a new type of ammunition, the trajectory correction projectile has much different ballistic characteristics than traditional uncontrolled ammunition and missile. The firing precision of trajectory correction projectile is significantly higher than that of uncontrolled projectile and lower than missile. Also the evaluation method for firing precision is different from that of uncontrolled projectile and missile. In this paper, by analyzing the calculation methods and characteristics of different firing precision evaluation indicators, the method suitable for evaluating the precision of trajectory correction projectile is determined, which provides theoretical and technical support for acceptance of trajectory correction projectile firing precision.
Accuracy Analysis of Aerodynamic Calculation of Twodimensional Ballistic correction Projectile based on Missile Datcom
Authors: Wu Hanzhou , Gao Min , Song Weidong , Jie Zhao , Wang Yi 
Published: October 2019

Abstract
Missile Datcom (hereinafter referred to as Datcom) is an aerodynamic engineering calculation software developed by the US Air Force Research Laboratory. It is commonly used in the preliminary design of the shape scheme of missiles, aircraft and other aircraft. In this paper, Datcom is used to calculate the aerodynamic parameters of a two-dimensional ballistic correction projectile(D2BCP), and the calculated data is compared with the wind tunnel test data. The analysis results show that Datcom calculates the axial force coefficient (CA) of the projectile with large system deviation, however, the deviation can be eliminated by a certain compensation, thereby obtaining a more accurate CA of the projectile. Datcom calculates the normal force coefficient (CN) with high Mach number accuracy, but there is an unacceptable deviation of the projectile CN calculated at small angle of attack ( α ). The calculation of pitching moment coefficient with α (CMa) is higher, but the error is larger under individual Mach numbers.
SKNN Algorithm for Filling Missing Oil Data Based on KNN
Authors: Wang Mei , Li Dong , Qi Kaiyuan , Xue Chenglong , Yang Erlong 
Published: October 2019

Abstract
Along with the rapid development of science and technology information in contemporary society, massive data has become a common phenomenon in information processing in various industries, and various data quality problems have also followed. Among them, data loss is a common problem. In the process of oilfield production, the dynamic data of production wells is increasing continuously every day, and data missing problems often occur. Aiming at the missing data, this paper proposes an improved data filling algorithm SKNN based on KNN. Based on the KNN algorithm, the algorithm uses the SMOTE algorithm to randomly generate the fill data range, and uses the multi-filling idea to find the weighted average as the fill data. The experiment with the production data of a well area in Daqing oilfield as the sample set verified that the SKNN algorithm could not only fill the data, but also improve the accuracy.
A Novel Anti-skid Capability Testing Device for Port Rail-mounted Equipment: Mathematical Modeling and Experimental Investigation
Authors: Wang Gongxian , Tang Qilin , Hu Zhihui , Hu Chenzhang , Li Yongzhi , Zhang Yang 
Published: October 2019

Abstract
Regarding to the lack of the effective method and equipment to test the anti-skid capability of port rail-mounted equipment along the rail. A novel anti-skid capability testing device (named as WACD) for port rail-mounted equipment is proposed in this paper. The mechanical model of the WACD is established to predict the maximum anti-skid capacity of the tested port rail-mounted equipment and analyze its working principle. After that, the experimental tests are carried out to verify the effectiveness and feasibility of the WACD. The test results confirm that the designed principle of the WACD is correct, and the testing device can be used to testing the anti-skid performance of the port rail-mounted equipment under the wind speed of 70 m/s.
Study on optimization of PES/CaCO3 composite powder for selective laser sintering (SLS) 3D printing technology
Authors: Nguyen Huu Chinh , Guo Yanling , Nguyen Tat Thang , Yu Yueqiang 
Published: October 2019

Abstract
In this study, a new type of friendly environment material including polyether sulphone resin powder (PES), and limestone flour (CaCO3) (referred to as CO-PES-CaC) has been developed for selective laser sintering (SLS) additive manufacturing that is low cost, environmentally friendly and energy efficient. The aims of this study were to optimization of PES/CaCO3 composite powder for SLS printing technology. The mechanical properties and microstructure of CO-PES-CaC affected by different the ratio of PES powder and CaCO3 powder has been studied. The experimental results indicate that the CO-PES-CaC quality was optimum when the ratio of PES powder and CaCO3 powder was 75/25. The mechanical properties peak at 8.09 MPa for tensile strength and 15.28 MPa for flexural strength, and 3.91 kJ/m2 for impact strength.
Research on mixture of PES/CaCO3 as 3D printing materials in restoring ancient architectural works in Vietnam
Authors: Nguyen Huu Chinh , Guo Yanling , Nguyen Tat Thang , Yu Yueqiang 
Published: October 2019

Abstract
In this study, we have used selective laser sintering (SLS) 3D printing technology with printing material is a mixture of Polyether sulphone resin (PES)/CaCO3 powder to recover the stylized dragon, lion, phoenix motifs and ancient works in Vietnam. The experiment has created a 3D product of lion mascot, with the result of mechanical properties tensile strength, flexural strength and impact strength average values, which are 8.08 MPa, 15.28 MPa and 3.09 KJ/m2, respectively. Experimental results show that the mixture of PES / CaCO3 powder is suitable for 3D printing materials in recovering the details and ancient works in Vietnam.
Transmission Characteristics Of T-Typed Photonic Crystals Waveguide Based on Two-Dimensional Al2O3 Ceramic Rods Array
Authors: Yang Yan , Wang Yong , Xu Biaogang , He Jie 
Published: October 2019

Abstract
This paper proposed and validates a T-typed photonic crystals waveguide in X-band consisting of Al2O3 ceramic rods array. Based on the numerical simulations on the band gap of the photonic crystals and the function of the waveguide, the corresponding experiments are performed, which are matched well with the numerical results. The measured transmission characteristics of the photonic crystals waveguide show a wide bandwidth between 8.56 and 11.98 GHz (relative bandwidth is 34.2%). The wideband and easy integration mean that the designed photonic crystals waveguide has potential applications in the large. scale integrated system and communication systems.
Tribological behaviour of Al-8.42Fe-1.29V-1.93Si/SiCp composites under dry sliding conditions
Authors: Huang Shaoxiong , Teng Jie , Jiang Fulin , Fu Dingfa , Zhang Hui 
Published: October 2019

Abstract
The tribological behavior of Al-8.42Fe-1.29V-1.93Si/SiCp composites was investigated using a ball-on-disc tribometer under dry sliding conditions. The coefficient of friction (COF) and the wear rate of the composites were evaluated over a load range of 2 – 25 N with sliding speed from 800 to 1600 rpm. Scanning Electron Microscopy (SEM) was utilized to examine worn surfaces and wear debris to reveal the wear mechanism. The results showed that the increase of sliding speed and load led to the decrease of average COF. The wear rate was mainly affected and was positively correlated with the applied load. Abrasive wear and oxidative wear were the dominant wear mechanisms at low loads, while the primary mode of wear mechanism transformed from adhesive wear at medium loads to severe delamination wear at high loads.
Design and implementation of a wearable exoskeleton system for lower limbs
Authors: Ye Junyang 
Published: October 2019

Abstract
Exoskeleton is a kind of wearable mechanical device. It combines the intelligence of human beings with the “physical strength” of robots, and the robots is controlled by human intelligence in this device, then some assignments that could not be accomplished by human alone are achieved by the robots. The lower limbs walking exoskeleton, a human-machine integrated device falls in between the human and the biped robots, could help people walk around. Because decisions could made by people in this device, the gait planning and gait balance during walking become more simple compared with the bipedal walking robots, the structure design is more convenient, and at the same time, the walking ability of the human body can be greatly enhanced, and the range of activities could be enlarged. In this project, a new type of wearable lower limb walking exoskeleton mechanism was designed by using electric system based on the in-depth study of the movement mechanism of human lower limbs musculoskeletal groups. Moreover, a prototype test system for the lower limbs walking exoskeleton was developed on the basis of theoretical research, including the processing and assembly of the mechanical structure, and the concrete realization of the software controlled framework. This prototype test system could serve as the experimental platform for further studied in the future. The ultimate goal of this project is to achieve a walking exoskeleton that has comfortable wearing and stable walking, reduce the energy consumption during walking, reduce the feeling of fatigue, and improve the speed of body weight-bearing exercise. This robot will greatly reduce the load that the heavy object brings to the muscles, and the servo motor will bear the main weight. This can greatly reduce the physical exhaustion of occupational groups mentioned as above and increase the duration of work, so as to bring qualitative changes in work efficiency and effectiveness.
The Research of Computational Method by Using Beam Element for Rope Structure
Authors: He Xuguang , Liang Lin 
Published: October 2019

Abstract
On the basis of in-depth study of mechanical behavior of rope, according to the catenary theory the equation of guy rope is built. Based on this equation, the guy rope is established in FEM which is analogized by using beam elements with little bending stiffness, and non-linear finite element calculations are applied for the guy rope. Take the theoretical shape of guy rope as study point, according to example calculations, computational accuracy about using beam element to simulate is quantificationally analyzed, and discipline curve of flexural rigidity to computational result is obtained and the results is also analyzed.
Research on Reliability Evaluation of Engine Crankshaft Flexible Production Line Based on AHP Fuzzy Comprehensive Evaluation Method
Authors: Fan Jinwei , Wang Miaomiao , Li Zhongsheng , Li Weihua , Zhang Yiling , Wang Peitong , Ma Ning , Yin Jian 
Published: October 2019

Abstract
According to the reliability evaluation system of production line and the Petri net model of production line availability, the relationship between reliability index and reliability index correlation is analyzed by statistically calculating reliability data. According to the relationship between the actual production situation and the correlation between the reliability index and the reliability index, the analytic hierarchy process based on interval judgment is used to give the weight of each reliability indicator to the reliability of the production line, and according to the reliability index The membership function of the evaluation grade is evaluated by the fuzzy comprehensive evaluation method for the reliability of the engine crankshaft flexible production line.
Study on Dynamic Control Model of Assembly Construction Cost Based on Piecewise Regression Analysis
Authors: Zhang XiaoSeng 
Published: October 2019

Abstract
Assembly building is still immature, resulting in the higher prefabrication rate of PC components, the higher the cost of assembly building. In order to improve the cost control ability of assembly building, a dynamic cost control model of assembly building based on piecewise regression analysis is proposed. A multiparameter constrained cost control model with quality, efficiency and cost as the control object is obtained by constructing the mathematical model of control. The statistical parameters of characteristic information of assembly building consumption are analyzed, and the dynamic explanatory variable of assembly building cost is analyzed by descriptive statistical analysis method, and the piecewise regression analysis method is used. The cost control test of assembling building is carried out, the prediction model of building cost is established, the panel data analysis of building cost is carried out by combining the correlation analysis and regression analysis method, and the cost dynamic control of assembling building is carried out by using the piecewise statistical method. The simulation results show that the cost prediction of prefabricated construction cost by this method is accurate, the control convergence is good, the global optimization ability of dynamic control of construction cost is strong, and the cost of engineering cost is effectively reduced. Improve the efficiency and quality of construction.
On the Surface Texture Effect of Ceramic Materials
Authors: Shao Weiwei 
Published: October 2019

Abstract
The surface texture of art ceramics gives pottery vitality and vitality. The ever-changing textures and colorful shapes make pottery products rich in artistic expression tension. Different textures are used to form various kinds of texture beauty, which is indispensable for art ceramics. Performance techniques. From the relationship between texture changes and ceramic modeling, the paper elaborates on various aspects of texture performance and decorative aesthetics by using different textures of texture materials and treatment methods, and the art of applying texture process and different angles. The effect is summarized and summarized, which has certain theoretical and practical significance.
An Autonomous Robotic Alignment Strategy Based on Visual Gudiance
Authors: Zhang Chi , Pu Jiexin , Niu Xinyue 
Published: October 2019

Abstract
Aiming at the problem that the intelligent level of solid rocket motor production line depends on manual alignment is low, a control strategy of robot automatic alignment based on monocular vision guidance is proposed. Accurate position measurement is realized by monocular vision; the mapping relationship between vision space and robot space is obtained by hand-eye calibration technology; the motion path of the robot is planned by the probabilistic roadmap method, and the assembly process is optimized by using the results of visual feedback; finally, the alignment process is visualized by simulation. Experiments and results demonstrate the effectiveness of the proposed strategy, which can achieve high-precision positioning, visual detection, path planning and path adjustment. It can meet the accuracy requirements of the robot automatic alignment operation and complete the whole process automatically.
Finite element analysis of new energy vehicle scroll compressor shell under working pressure
Authors: Hu Shunan , Tang Mengyi , Ge Dawei , Guo Huaming 
Published: October 2019

Abstract
The interference design between the mating surface of shell and retainer in new energy vehicle scroll compressor were important parts of the design of the shell assembly. The finite element analysis of static structure was used to analyze the strength of shell and the deformation value of the mating surface under the working pressure, and minimum surplus were used to analyze whether the matching surface surplus design meet the design requirements. An analytical method was provided for the design of new energy automobile scroll compressor shell by static structure analysis of shell and the interference of mating surface.
Trial Production of Stainless Steel Cladding Rebar by Liquidsolid Casting and Hot Rolling Method
Authors: Liu Xuming , Feng Guanghong , Liu Xin , Wang Baoshan , Zhang Hongliang 
Published: October 2019

Abstract
In the present investigation, liquid-solid casting and hot rolling method was successfully used to manufacture stainless steel cladding (SSC) rebar. Stainless square tube that was surface treated by pellet blasting treatment was preheated to 1100 °C, and then liquid carbon steel which was heating up by induction furnace to 1620 °C was filled into the tube to cast the SSC billet. SSC billet was rolled in a wire and rod plant successfully due to metallurgical bond state between the tube and carbon steel. Soaking temperature and starting rolling temperature as well as finishing rolling temperature were exhibited 1180C, 1130C and 1000C. Uniaxial tensile testing of SSC rebar at room temperature exhibited an extremely yield strength of 433 MPa and a tensile strength of 599 MPa, while the elongation reached 24%. Positive and negative bending experiment showed no cracks during the deformation. Through metallographic analysis, it was found that the base structure of stainless steel was ferrite, and heterogeneous phases such as martensite and ferrite was discovered near the interface of carbon steel and stainless steel.
Multidimensional Data Management System for Spacecraft AIT Process Based on Product Structure
Authors: Wei Peng , Zhao Jingjing , Yang Xiaoning , Zhang Liwei , He Wenxing 
Published: October 2019

Abstract
In order to solve the problems such as poor integration and application of the data in spacecraft AIT process, this manuscript analyzes the evolution of AIT process data in three dimensions: product structure, time period and development stage from the aspects of data model construction and data integration. We built a multidimensional data model and developed a multidimensional data management system based on product structure. This system takes the product structure as the core, organizes the AIT process data, defines the correlation relationship between different systems and different dimensions, realizes the structured integration of the whole data of AIT process, and generates the AIT process packet.