bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sensitivity Analysis of Adaptive Holographic Fiber-Optic Acoustic Emission Sensors during the Registration of Acoustic Waves In a Plate
Authors: Bashkov O V , Romashko R V , Bashkov I O , Zaikov V I , Khon H , Solovev D B 
Published: April 2020

Abstract
Paper presents the results of studying the features of recording acoustic emission waves by fiber-optic sensors. Fiber-optic sensors are used as an elastic medium that receives acoustic emission waves. Optical fibers were built between the layers of the polymer composite material during the manufacturing process. The measuring system is constructed on the basis of an adaptive interferometer. Optical fibers are part of the interferometer optical scheme. The elastic wave acting on an optical fiber changes its optical density, changing the interference pattern of the optical beam. The work of the holographic interferometer based on the fact that the interference pattern, formed by the object and reference light beams, is a dynamic hologram that is constantly recorded in the photorefractive crystal during the elastic action on the fiber. Sensitivity of fiber-optic sensors based on an adaptive interferometer allows recording acoustic emission waves. The acoustic emission waves were generated by the Hsu-Nielsen source. A significant difference in the speed of sound is explained by the anisotropy of the properties of the composite material. The structure and density of the material’s fibers in different directions are different. The wavelet transformation was used to form the signal front.
PCM Bearing Capacity Prediction Criteria Development Based on Registered AE Parameters
Authors: Bryansky A A , Bashkov O V , Bashkov I O , Solovev D B 
Published: April 2020

Abstract
In this paper a result of the registered acoustic emission (AE) signals during static deformation and destruction of the polymer composite material (PCM) study is presented. Analysis of the total AE accumulation, changing of the Ib-value and probability densities of peak amplitudes and median frequencies of the AE signals was done. An approach for the PCM destruction stages identification and the bearing capacity determination based on the energy and frequency analysis of the AE signals wavelet decomposition is proposed.
The Effects of Vibration Treatment in the Process of Welding on the Structure of Metal of Seam Weld
Authors: Fayrushin A M , Chernyatyeva R R , Yakovleva D N 
Published: April 2020

Abstract
Today a sufficient number of works are known, which indicate the positive effect of vibrational oscillations superimposed both during the welding process of the structure and after it.
The article discusses the features of the influence of low-frequency vibration oscillations during the welding cycle on the structure of the weld metal of steel 09G2S.
Experimental survey of the influence of the vibration effect of the weld pool in the welding process on the physicomechanical properties of the metal of welded joints made it possible to prove the positive effect of this technology, manifested in an increase in the strength and fatigue endurance of the welded joints.
This fact will allow expanding the application of vibration processing technology in the process of welding metal structures.
Trunk Pipeline Throughput Enhancement Using the Continuous Additive Dosing Technology
Authors: Chekardovskaya I A , Bakanovskaya L N 
Published: April 2020

Abstract
The article covers the peculiar features of using drag-reducing additives to solve the problems of gas condensate transport, namely: reducing energy consumption on current condensate pipelines and reducing capital costs while increasing the pipelines throughput. The authors have developed an optimization method of drag-reducing additive dosing to decrease the energy consumption of pumping in a particular section of a condensate pipeline, justified and proposed a technical solution for the use of continuous drag-reducing additive dosing.
Reinforcing of Composite Materials on the Basis of Fresh Ice and Natural Origin Additives
Authors: Syromyatnikova A S , Bol’shakov A M , Alekseeva A V 
Published: April 2020

Abstract
Possibility of application fibrous additives of a natural origin in an ice matrix as the reinforcing additives is investigated. As a matrix, fresh ice water was used, reinforcing additives — hay fiber 10 mm long and 0.5–1 mm thick and basalt fiber produced by Plant of Basalt Materials LLC (Pokrovsk, Sakha Republic (Yakutia)) with a thickness of 9–12 µm and 40 mm long. The volume content of hay fibers was 10, 20, 30%. The density of chaotic styling of basalt fiber in a single layer was about 3 mm / mm2. Magnitude of breaking load was determined experimentally when tested according to three-point bending pattern. It is shown, that introduction fibrous additives a natural origin leads two - to triple increase of ultimate bending strength of fresh ice. During the tests, unreinforced ice samples fractured brittle along the loading force, and reinforced samples showed viscous fracture and an increase in breaking load due to the mechanical adhesion of reinforcing fibers to ice matrix.
Comprehensive Study on Coded Modulation Schemes for Future Communication
Authors: Liu Longzhou 
Published: April 2020

Abstract
In the future communication technology standards, wireless communication in high mobility scenes is extremely important, but the fast fading of the channel and the Doppler frequency shift caused by high-speed mobile will seriously affect the overall performance of the system. The communication performance indicators such as bit error rate (BER), computational complexity and transmission capacity will degrade. This paper introduces several coded modulation schemes of joint coding modulation diversity (JCMD), orthogonal time-frequency space (OTFS) modulation and space-frequency block code (SFBC), and uses bit interleaved coded modulation (BICM) as a reference for comparison. The simulation results show that the JCMD scheme has the best block error rate (BLER) performance under different moving speed and code rate conditions. And JCMD has strong robustness, can achieve large performance gains even under the conditions of high speed and high code rate.
Magnetic Solid-Phase Extraction Based on Different Modified Materials for the Determination of Lead in Environmental, Food and Biological Samples
Authors: Shan Xiaoyue , Shi Yanpeng , Tan Siwei , Shao Ji , Su Kewen , Zhang Ling , Ye Haipeng 
Published: April 2020

Abstract
Lead is one of the most important trace heavy metals, which is damaged to human beings and environment. Hence, the determination of lead in environmental, food and biological samples is extremely important to guarantee the public health and safety. This paper summaried and compared the magnetic solid-phase extraction based on different modified materials for the determination of lead in environmental, food and biological samples.
Grafting Cosmetic Active Ingredients for the Functionalization of Cosmetotextiles
Authors: Han Jinju , Liu Lei , Fan Zhanhua , Zhang Zhaolun , Yang Shuyan , Tang Ying 
Published: April 2020

Abstract
Consumers’ rising demands for functional fabrics have led to the burgeoning of a revolutionary type of “cosmetotextiles”, which are textile products containing various cosmetic active ingredients for energising, skincare and beautifying. Phytochemicals and/or novel formulations are required for both product development and customer attraction. Encapsulation and grafting/coating technologies have provided these cosmetic ingredients with effective stabilization, sustained dermal delivery and prolonged dermocosmetic efficiency. This article provides an overview of the development history, popular cosmetic ingredients and manufacturing techniques of cosmetotextiles.
Spatial Distribution Analysis of Convenience Stores in Kaifeng City Based on POI Data
Authors: Yang Xiqing , Hou Hanping , Yang Jianliang , Li Dandan , Zhang Kexin , He Ting , Han Lu , Wang Yue , Li Xue 
Published: April 2020

Abstract
In this paper, the visual analysis of POI data is used as the research method. The Arc GIS series software is used as a research platform. 567 convenience stores in Kaifeng City are selected as samples to analyze the layout characteristics and influencing factors of Kaifeng retail industry. This paper aims to plan and guide the layout of convenience stores in Kaifeng from the perspective of the government, propose improvement measures, improve the service level of convenience stores, provide convenience for residents, provide some suggestions and reference for the development of its regulatory role and the creation of “smart city”.
Analysis and Kinetics of Co-Pyrolysis of PE and Enteromorpha
Authors: Wang Huashan , Zhang Xinyue , Wang Yuekang 
Published: April 2020

Abstract
In order to study the better disposal of the main components of waste plastics,co-pyrolysis it with Enteromorpha in a nitrogen atmosphere,.with the increase of the mass fraction of Enteromorpha, the main cp-pyrolysis temperature range of polyethylene (PE) and Enteromorpha shifts toward the high temperature zone. Polyethylene (PE) and Enteromorpha co-pyrolysis have a certain inhibitory effect. When the polyethylene (PE) mass fraction is 75%, the relative inhibition value can reach 19.4%. The kinetic analysis shows that the first-order kinetic model can well describe the co-pyrolysis process of the two, and there is a dynamic compensation effect.
Fast Simulation of Cloth-Rigid Body Based on PBD
Authors: Huang Sijie , Zang Hui 
Published: April 2020

Abstract
Because the excellent performance of the position-based dynamics (PBD) method, the PBD gains popularity among cloth simulation and computer animation. Based on unified adaptive PBD, we apply collision constraints to cloth and rigid body models to speed up the process of collision detection between cloth and complex models, we conduct a bounding box high-level collision culling detection algorithm. Moreover,friction is calculated by the speed of the cloth to make the cloth simulation more realistic. Compared with continuous collision detection (CCD), our method improves the simulation speed several times.The experimental results demonstrate that we has the wide range of applicability and the the simulation effect is stable.
Magnetic FeS2/Fe3O4composites as adsorbents for chromium (VI) removal from aqueous solution
Authors: Chen Guobao , Lu Yuanhang , Zhang Xinmin 
Published: April 2020

AbstractIn this study, novel magnetite composites FeS2/Fe3O4were facilely synthesized by a one-pot hydrothermal method. It is applied as an adsorbent for chromium (VI) removal from aqueous solution. The pyrite (FeS2) and the magnetite (Fe3O4) were also synthesized and compared. The analysis results of XRD, SEM and XPS confirmed the formation of FeS2/Fe3O4composite. The magnetic characterization revealed that the saturation magnetization value for FeS2/Fe3O4was 50.89 emu/g, which is helpful for the separation. The effects of the initial pH values, adsorbent dosage, contact time and reaction temperatures on the Cr (VI) removal by various materials were studied and contrasted in detail through experiments. It is found that the composite FeS2/Fe3O4had high removal ability for Cr (VI) at high pH. 86.1% of Cr (VI) removal efficiency was obtained when the pH value is at 12.0, the contact time is 3h and the temperature is controlled at 35 °C. FeS2component was inferred as the major contribution for the composite to the Cr (VI) removal. FeS2/Fe3O4displayed a promoted Cr (VI) removal efficiency with the increasing temperature and its absorption process is proved spontaneous.
RETRACTED: Study on Microstructure and Mechanical Properties of Nitrided and Titanized Carbon Steel
Authors: Xu Jiawei , Tang Lingbo , Chen Long 
Published: April 2020

Abstract
In this paper, the structure of nitrided titanium on carbon steel is studied, the interaction mechanism of nitrided titanium is analyzed, and the orthogonal process design of nitrided titanium is given. The mechanical properties of nitrided layer in different depth were studied, and the microstructure and mechanical properties of nitrided layer under different temperature and nitrogen-hydrogen ratio were analyzed. The microstructure, surface morphology, wear marks and element composition of the nitrided layer were observed and analyzed by means of Om, XRD, SEM and EDS, and the gradient hardness distribution, friction and wear properties of nitrided layer were tested and analyzed.
Characterization of Steelmaking Zinc-Containing Converter Dust
Authors: Zheng Zihao , Xiong Guo , Liu Xin , Zhou Yunhua , Yang Xiaojin , Dan Jiayun , Chen Tong 
Published: April 2020

Abstract
Due to the increasing use of scrap galvanized steel in converter process, the content of zinc in converter dust is rising gradually as a result of zinc enrichment and accumulation, which will cause problems to dust recycling from long-term production stability and safety. The aim of this study was to reveal the chemical, physical, mineralogical and morphological characteristics of zinc-containing converter dust. The study shows that the concentration of Fe, Ca, Zn is 52.43~54.25%, 5.97~6.09%, 3.60~3.73% respectively. The phases such as Fe3O4, Fe2O3, FeO, ZnFe2O4, ZnO and C were detected through XRD analysis. Granulometric analysis indicated that, the particle size distribution is very concentrated and almost 80% of particles are finer than 1μm. Further researches on integrated utilization process are necessary in order to develop effective method to recycle zinc-containing converter dust.
Study on Optimization of BP-GA Method Applied to Shaft Laser Cladding Repairing Technology
Authors: Zhu Hongyu , Tong Yuan , Ge Zhili 
Published: April 2020

Abstract
Laser cladding technique, which has the characteristics of refining microstructure, minimum deformation and high safety during processing, could enhance the strength of work-piece, shorten the repairing cycle and reduce the restoration cost by roughly sixty percent on shaft repairing. Process parameters optimization plays a key role in repairing quality and cost in laser cladding technique. This paper studied the application of YAG laser cladding technique on shaft repairing and which had important sense to popularize laser cladding technology. Through the experimental research and Artificial Neural Network-Genetic Algorithm approach, this technological process for laser cladding showed the capability to improve efficiency and quality of shaft repairing and reduce repairing cost with guarantee of enough bonding strength and no cracks in restoration area by optimization on key parameters like work-piece rotation speed, defocusing amount, powder stream rate.
Isolation of a Heat-Resistant Aspergillus Fumigatus and Identification of its Cellulase
Authors: Sui Ming , Qu Peng , Zhu Yusong , Zhao Silei , Tao Ruixiao 
Published: April 2020

Abstract
Cellulose-degrading fungi have the characteristics of large enzyme production, high enzyme activity, comprehensive enzyme composition, and most of them are secreted and extracted extracellularly. Therefore, studies on cellulase-producing bacteria at home and abroad have focused on fungi. Due to its thermal stability, the high temperature resistant cellulase can meet the high temperature conversion conditions in production, which is beneficial to the improvement of cellulose degradation efficiency. This chapter mainly carried out the separation screening and identification of heat-resistant cellulase-producing fungi, and the analysis of cellulase protein components and concentrations in fermentation products by Nano LC-ESI-MS/MS.
Research on Fuzzy PID Control of Physical Exercise Supporting Robot Speed Control System
Authors: Gou Xiaoping , Zhang Wanjun , Zhang Jingxuan , Zhang Jingyi , Zhang Jingyan 
Published: April 2020

Abstract
Physical exercise assisted robot speed regulation has higher requirements on dynamic characteristics of the system and faster response speed, and there are many uncertain factors in the process of climbing athletes in the process of climbing the building. Single closed-loop negative feedback control based on traditional control strategy System speed regulation is unsatisfactory. Based on the above problems, this paper establishes the mathematical model of the fuzzy PID control system of the physical exercise assisted robot speed control system, and designs a double closed loop speed control system based on fuzzy PID, and compares it with the traditional PID control; The sprint speed is given to the sinusoidal speed given curve by referring to the stability of the elevator climbing process and the comfort of the occupant. Using Matlab simulation, the simulation results show that in the physical training robot speed control system, the fuzzy PID control is more stable than the traditional PID control start and braking process, with higher comfort, smaller error and higher precision. Stair climbing has a strong use value and brings good value to the economy and society.
Research on Key Technologies of Elders’ Exoskeleton Robot Assisted by Physical Exercise Based on Fuzzy PID Control
Authors: Gou Xiaoping , Zhang Wanjun , Zhang Jingxuan , Zhang Jingyi , Zhang Jingyan 
Published: April 2020

Abstract
In the past, walking aids (such as crutches and walking aids) widely used by the elderly in physical exercise had relatively single functions, low intelligence, insufficient safety and comfort, and could not meet the needs of users for independent living. Therefore, it is necessary to apply robot technology to the field of traditional walking aid equipment and design a more intelligent, comfortable and safe walking aid robot system. The gait control of the exoskeleton robot assisted by physical exercise for the elderly is studied, and an algorithm based on fuzzy PID is proposed. Firstly, a fuzzy PID control algorithm for the exoskeleton robot assisted by physical exercise for the elderly is given. Secondly, membership functions are selected according to the parameters of the robot joint angle error and error variation. Finally, combined with practical operation experience, a fuzzy rule table is established, and online self-tuning of PID parameters is completed. The experimental results show that the fuzzy PID control method can make the exoskeleton robot move smoothly and realize the gait control of the robot initially.
3D Printing Technology and Its Application in Industrial Manufacturing
Authors: Hao Botao , Lin Guomin 
Published: April 2020

Abstract
3D printing technology is widely used in industrial manufacturing, medical biology, and cultural creativity because of its direct molding.Based on the characteristics and advantages of 3D printing technology, this paper takes the 3D printing technology molding principle and process flow as the research object, and analyzes 3D Application of printing technology in automotive manufacturing, aerospace and electrical industries.
Research on Combination Optimization of Preventive Maintenance of Mechanical Equipment
Authors: Zhang Yangyang , Jia Yunxian , Wu Weiyi , Yin Xuyang , Ding Shenhu 
Published: April 2020

Abstract
Modern mechanical equipment has powerful function and complex structure, which puts forward new requirements for equipment maintenance. Aiming at the new requirements of improving maintenance efficiency and reducing maintenance cost, a decision model of combined maintenance is proposed. First of all, determine the specific maintenance parts and their maintenance methods, then get the distribution of maintenance cost and service life according to the historical data, with reliability as the constraint, combined with the length of service replacement model to optimize the preventive maintenance of the action device of a certain type of mechanical equipment, which can effectively reduce the maintenance cost and improve the maintenance efficiency.
The development of laser drilling: A review
Authors: Wang Chongxu , Wang Qingtao , Qian Qiudong , Di Baojun 
Published: April 2020

Abstract
Laser drilling is of great significance for metal parts production, aerospace parts processing, precision chip manufacturing, etc. In recent years, drilling technology based on new laser devices has become an international research hotspot for its advantages of high speed, high accuracy and low thermal damage. In this paper, the laser drilling is compared with other drilling methods, and the influencing factors and application trends are introduced. At the same time paper introduced the main research on the model and theory of laser drilling at home and abroad. The important effects of thermal effect and molten material on drilling and the latest research progress are introduced.
Internet of Vehicles Based on TrustZone and Optimized RSA
Authors: Wang Zhaoyang , Zuo Min , Yao Shuangshun , Aihemaiti Nijiati 
Published: April 2020

Abstract
In recent years, the problem of data leakage in Internet of Things applications has become a major social issue, causing strong concern in all aspects. Especially for today’s popular car networking technology, if the driving data and other information is stolen, it will not only expose personal privacy and personal information, but also can even harm life safety. At the same time, some manufacturers tamper with the collected vehicle data, in order to forge false vehicle performance and deceive consumers. In the light of the data security risks faced by current Internet of Vehicles applications, based on the TrustZone architecture, this paper builds a trusted execution environment, uses timestamp authentication technology, and introduces Rabin, Huffman coding and random components, respectively, from the perspective of improving encryption speed and reducing the size of ciphertext files, to optimize the traditional asymmetric RSA algorithm, thus to construct a secure data acquisition method of Internet of Vehicles based on TrustZone and optimized RSA, which realizes the information security of the data collection of the vehicle network data. The experimental environment was built based on raspberry PI 3B experimental board, and the test and comparative experiment were conducted. The experimental results show that the method can encrypt the vehicle driving data efficiently and safely, prevent the attacker from stealing and tampering with the data, and ensure the data security of the collecting terminal. The optimized RSA algorithm improves the encryption speed while ensuring security, and the ciphertext file is smaller, which is more suitable for the embedded environment with large data volume and limited hardware computing capacity.
Hybrid Stacking Integration of Multi-Sensor Navigation Module with WLFO and Thick Film Process
Authors: Wang Gang , Xia Chenhui , Liu Dachuan 
Published: April 2020

Abstract
A hybrid stacking integration of multi-sensor navigation module with WLFO and thick film process was demonstrated. With wafer level fan-out packaging and stacked LTCC substrates, the GNSS, MEMS IMU, magnetometer and altimeter were integrated in one single module, the MEMS inertial sensors and ASIC chips were overlapping integrated with WLFO process as a multilayer wafer and diced, then the diced MEMS-ASIC modules, as well as the accessory circuits were pattered and mounted on several LTCC substrates as a drawer structure to accomplish the final system. The size of inertial sensor module is 10mm×5mm, and the entire navigation module is with size of 26.7cm3 and weight of 36g, meanwhile, with a high performance, the multi-sensor module can achieve low cost and high performance simultaneously. This module can be utilized for reliable navigation and gesture perception of micro UAV/UUV, automotive and other minimized platforms.