bluuebunny/crossref_metadata_2025_split huggingface dataset:
Temperature Field Distribution for Laser Cladding on Axially Symmetrical Parts
Authors: Jia Yunjie , Wang Keyan , Lou Liyan 
Published: December 2019

Abstract
Laser cladding surface modification technology is widely used to strengthen and repair the surface of axially symmetrical parts. Based on the Gauss heat source model and COMSOL Multiphysics finite element analysis software, the surface modification process characteristics of laser cladding on the rotating substrate were studied by numerical simulation. The transient temperature field distribution under different process parameters was solved. Laser cladding pool corresponding to numerical simulation parameters was photographed by infrared high-speed camera. The results show that the temperature distribution of the Gauss heat source is delayed due to the normal distribution of heat flow and the cumulative effect of heat. In addition, with the increase of the rotational speed of the substrate, a cyclic preheating temperature band will be formed on the surface. The shape of molten pool obtained by temperature field analysis is droplet shape, which is basically consistent with the actual morphology of laser cladding molten pool.
Study on Multi-influence Factors of Dry Ice Cleaning Effect Based on Orthogonal Test Method
Authors: Yin Kuang , Fang Jian , Zhang Min , Lin Xiang , Liu Jiangshan , Zhou Wenjun , Yu Jianhui 
Published: December 2019

Abstract
In order to apply dry ice to the insulator cleaning in power systems, it is necessary to obtain the optimal parameter range of each of the influencing factors. In this paper, a six-factor, five-level orthogonal test method is used to obtain a representative test plan. The influence level of air pressure, dry ice flow rate, cleaning distance, cleaning time, nozzle rotation speed and cleaning time on the cleaning effect were obtained. Results revealed that the optimal range for each cleaning parameter is: air pressure 0.7MPa∼0.8MPa, dry ice flow rate 2.5kg/min∼3.0kg/min, cleaning distance 10cm∼15cm, cleaning angle 10°∼20°, nozzle rotation speed 5∼15r/min, cleaning time 30s∼36s.
Underwater Cylindrical Acoustic Array Structure Design Scheme
Authors: Yang Chong , Zhou Sibin , Zhang Guoguang 
Published: December 2019

Abstract
In this paper, the mathematical model of cylindrical array is analyzed. A cylindrical matrix structure scheme is designed for the complex environment of the ocean. The structure of the array is briefly introduced, and the situation of the array being affected by current and tow is carried out. The calculations show that the cylindrical array can resist the horizontal current impact and maintain its stability. In extreme cases, it needs more than 50t to lift the matrix or displace the array. The double cylindrical array arrangement can be used. Automatic tracking and monitoring of underwater moving targets is achieved within 300.
Application of Q-Learning and RBF Network in Chinese Chess Game System
Authors: He Wenyang , Zhao Wenlong , Jiang Yuan 
Published: December 2019

Abstract
Machine game is one of the important directions of artificial intelligence research, and Chinese chess is a typical game process. This paper first introduces the game principle of Chinese chess. Then Q-learning method and evaluation function are added to train data through a large amount of self-learning. A chess game system based on Q-learning is designed and developed. The experimental results show that Chinese chess with Q-learning algorithm has the ability of evolutionary learning, which effectively improves the game level of Chinese chess.
The surface electrical analysis of Nano Polyurethane-Based Superamphiphobic composite insulation materials
Authors: Guo Kai , Wu Kai , Li Xingeng , Jiang Bo , Zhao Peng , Wu Yaping 
Published: December 2019

Abstract
In the early stage of this study, it was found that Polyurethane was only two ways to construct the super-hydrophobic surface. The second is to construct micro-nano structure with low surface energy materials. Specific preparation methods of superhydrophobic surfaces include heterogeneous nucleation method, plasma treatment method, etching method, sol-gel method, vapor deposition method, electrochemical method, alternating deposition method, template method, self-assembly method, solve-non-solvent method, direct film formation method, etc., and many successful examples have been achieved. The research work in this field is relatively few, and the materials involved are scattered. The research objectives are all focused on the construction of micro-nano multistage surface structures with low surface energy. At present, most of these works only test the corresponding electrical properties of superhydrophobic surfaces. In order to verify the application prospect of superhydrophobic surface in antifouling flashover, it is necessary to carry out in-depth research on its hydrophobic, fouling and discharge aspects.
Implementation of Robot System for Multi-user and Multi-robot Based on Cloud Platform
Authors: Yin Lang , Yan Guanghui , Cao Yingjian , Liu Beng , Feng Jianyong , Zhang Meng , Liu Ting 
Published: December 2019

Abstract
With the rapid development of the complexity and diversification of robot services, large number of data processing and analysis problems occurred during the robot working process. In this paper, we designed a collaborative system consisted multi-user and multi-robot based on cloud platform. By pre-setting the rights and restrictions owned by each user in different scenarios, the server determines the scene in which the robot is located by the picture taken by the robot, thereby giving each user different permissions. Enable the robot to listen to the user’s instructions to protect privacy. The integration of cloud technology and multi-robot systems made it possible to improve energy efficiency, real-time performance and reduce memory cost.
Axial Crashing of Folded Thin-Walled Tubular Structure with Various Cross-Sectional Shapes
Authors: Zhang Feifei , Zuo Qiyang , He Kai , Fang Haitao 
Published: December 2019

Abstract
Many thin-walled tubular structures have been widely applied to absorb the impact energy during vehicle crash accidents. Literatures prove that the energy absorption performance of the tubular structure is closely associated with its cross-sectional shape. Here in this paper, a series of folded tubular structures that have various cross-sectional shapes, including triangle, square, hexagon and circle, are proposed, and the crashworthiness characteristics of these structures are compared and analyzed based on finite element simulation. It is found that folded tubular structure with more cornered cross section has better energy absorption performance. The parametric analysis results also indicate that the energy absorption performance of the folded tubular structure improves with bigger thickness.
Synthesis and adsorption properties of acrylic acid/styrene binary copolymer resin
Authors: Tang Jian , Wang Yifei , Huang jiannan , Wang Shifan 
Published: December 2019

Abstract
In order to improve the adsorption of heavy metals in polyacrylic hydrogels, the experiment uses acrylic acid and styrene as raw materials, potassium per sulfate as initiator, and ethylene glycol as crosslinker to synthesize polyacrylic acid/styrene hydrogel. The effects of monomer ratio, acrylic acid neutralization degree, crosslinker dosage and temperature on product properties were studied by orthogonal test. In addition, the copolymer was characterized by fourier transform infrared spectroscopy. The adsorption of heavy metal performance test found that when the ratio of acrylic acid and styrene is 1:0.2, the degree of neutralization is 65%, the crosslinker accounts for 1.0% of the monomer mass fraction, and the temperature is 65 °C, the polyacrylic acid/styrene copolymer hydrogel is optimal. The adsorption of Pb2 + in the optimal group was 328.25 mg/g.
Preliminary Study on Caproic Acid Production by Compound Bacterial Agent of Luzhou-Flavor Liquor Pit Mud
Authors: Li Junwei , Zhang Chao , Xu Qiushuo , Lin Sun , Liu Zhanqi , Dong Xiaoyuan 
Published: December 2019

Abstract
Pit mud plays an important role in the fermentation of Luzhou-flavor liquor, It is a common problem for Luzhou-flavor liquors when the mud is aging and the fragrance is not prominent.Choose high quality mud, Inoculating the mash extract as a mixed bacterial solution in sodium acetate medium, Anaerobic culture method to increase the activity of anaerobic microorganisms, Increase hexanoic acid production; Characterization of hexanoic acid by color reaction of copper sulfate diethyl ether, Determination of hexanoic acid by gas chromatography, Its output is in the range of 1.5g/Lto 3.6 g/L, This is the production of mud maintenance liquid, Technical support is provided to prevent aging of the mud and improve the fragrance of the main body.
Sulfur-doped Bi2Se3 Monolayer as Potential electrode Materials for Mg-ion batteries
Authors: Jin Wei , Wang Zhiguo 
Published: December 2019

Abstract
Magnesium-ion batteries (MIBs) are a front-runner among the alternative battery technologies suggested to substitute the state-of the-art lithium-ion batteries (LIBs). Searching for proper electrode materials for MIBs is critical for the development of MIBs. Using density functional theory (DFT) calculations, Bi2Se3 monolayers with sulfur-doping as potential electrode materials for MIBs were investigated in this work. The effect of S doping on adsorption and diffusion behaviors of Mg ions was mainly studied. The results showed that Mg atoms first prefer to occupy the H sites of both perfect and S-doped Bi2Se3 surfaces. Doping of S atom reduces the corresponding adsorption energy and diffusion barrier of Mg on the surface. The present results give expectation of excellent battery performance by S doping and it is one way to improve electrode materials for the fast charging/discharging of MIBs.
Research on Environmental Accounting Information Disclosure under the Background of Sustainable Development
Authors: Xiao Yumin 
Published: December 2019

Abstract
At present, the economy is developing rapidly, and the environmental problems brought about by it are becoming more and more serious. Environmental pollution caused by smog and carbon emissions has become an important factor affecting the sustainable development of the national economy. Therefore, corporate environmental accounting information disclosure has received more and more attention, and countries have gradually realized that environmental information disclosure through economic means is an important channel for obtaining corporate environmental activities. This paper first expounds the scientific understanding of environmental accounting, and analyzes the relationship between sustainable development and environmental accounting information disclosure, and secondly expounds the importance of environmental accounting information disclosure, Finally, suggestions are made for improving the way and quality of corporate environmental accounting information disclosure.
PN Modified Differential Game Strategy for Two-on-one Cooperative Interception
Authors: Zhang Jiaqiang , Lou Yuanwei , Liang Xiaolong , Qi Duo 
Published: December 2019

Abstract
In order to deal with the Chaff, Infrared Decoy, Electronic Jamming and the escaping maneuvering of the target, two-on-one cooperative interception strategy is discussed in this paper. The planar engagement of two air-to-air missiles cooperative intercepting one target by the alliance of differential game (DG) strategy and proportional navigation (PN) guidance law is investigated. The equations of motion for two-on-one cooperative intercepting are derived first, and zero-effort-miss (ZEM) representation technique is employed. Then a linear quadratic differential game cooperative zero-sum cost function is phrased, and the cooperative control variables of two-on-one cooperative guidance law under pure DG strategy are derivate. Finally, the proportional navigation guidance law is introduced to alleviate the acceleration command oscillation. The simulation results in the ideal dynamic scenarios show that, the combination of DG and PN guidance law is effective to the two-on-one cooperative pursuit-evasion problem, especially for the high maneuvering target at the cost of much more control effort.
Modeling and Control of Methanol Engine Speed with GT-Power and Simulink
Authors: Zhang Qie , Jiang Yankun 
Published: December 2019

Abstract
With a 4-cylinder methanol engine as the research object, GT-Power was used to build a one-dimensional simulation model for the methanol engine and verify its accuracy. The PID and fuzzy PID control models were built based on MATLAB/Simulink, and the methanol engine model was coupled with the control models. The speed control effects of the methanol engine under different control strategies were compared and analyzed. The results showed that traditional PID control method could meet the control requirements under a singular load, but the overshoot of the engine speed step response curve under fuzzy PID control was decreased by about 12% compared with traditional PID controls methods, also showing significantly lower speed fluctuations. When the working conditions of the engine changed, the fuzzy PID control method had better engine speed control performancethe than the traditional PID control method.
Optimization of a Wearable Device for Core Body Temperature Monitoring Based on the Dual-Heat-Flux Model
Authors: Fang Jiayueyuan , Zhou Congcong , Ye Xuesong 
Published: December 2019

AbstractThis paper presents an improved structure of core body temperature (CBT) probe based on the dual-heat-flux (DHF) principle. A new frustum-shaped architecture of sensor, instead of traditionally cylinder-shaped, is presented to decrease the transverse heat flow which is the major obstacle to fit the DHF theory. Besides, finite element simulation is conducted to compare the heat concentration in those two structures and reveal the relationship between the measuring accuracy and the thermal conductivity of the shell. Nylon Glass Fiber Mixture (NGFC) is introduced to improve the performance of probes based on the above simulation. Finally, to verify the effectiveness of the models simulated accordingly, wearable probes based on CBT monitoring system is presented and hot-plate (produced by Thermo Scientific) experiments are carried out. The new probe shows an error, i.e. 0.09±0.05°C, at different CBTs, which promises higher stability within acceptable error in congeneric researches.
Implementation of Intelligent Trash Can Based on Voice Control
Authors: Cui Haiyan , Mao Limin , Jin Yuhao 
Published: December 2019

Abstract
In this paper, a smart trash can based on the voice control is proposed. The garbage bin takes the Microcontroller as the control core and has a voice interaction function, that is, according to the speech recognition function instruction, the obstacle avoidance can be automatically realized during the movement process, and when the capacity reaches the preset value, it can prompt people to clean up. Meanwhile, the status of all trash cans can be displayed on the LCD screen. After debugging, the design has diversified functions and fully demonstrates practicality.
Research on Load Distribution Algorithm of Central Heating Network
Authors: Whang Haijiao , Yang Jianhua , Lu Wei , Duang Zhipeng 
Published: December 2019

Abstract
Hydraulic and thermal imbalance is very common in central heating system, resulting in energy loss and poor heating experience of heat users. In order to solve the problem of hydrothermal imbalance, a control method based on Modeling and Simulation of central heating system and PSO particle swarm optimization algorithm is proposed. Firstly, the mathematical modeling and analysis of the hydraulic and thermal conditions of the central heating system are carried out, and the actual operation of the system is simulated by using MATLAB/Simulink to build and simulate the model of the central heating system. Then, the valves of each heat exchanger station are analyzed by using particle swarm optimization (PSO) with the variance of return water temperature as the control objective, and the appropriate valve openings are calculated iteratively, so as to solve the problem of hydro-thermal imbalance in the central heating system. The traditional PID control method is used to carry out comparative experiments. The experiment shows that the particle swarm optimization method performs better than the PID control method. The return water temperature of the heat exchanger station is similar, and it can meet the heating demand better.
Optimization of Flow Field and Nox Concentration Field of Denitrification System in Coal-Fired Power Plant
Authors: Jiang Long 
Published: December 2019

Abstract
A unit of a coal-fired power plant in North China was selected to study. The flow field distribution and NOx concentration distribution at the inlet and outlet of the denitrification system are tested. Then, the flow field adjustment and optimization of the unit are carried out based on the above test results, and the verification test of optimized flow field and NOx concentration distribution are carried out. After the flue optimization, the uniformity of NOx concentration distribution at SCR reactor inlet and outlet was improved, and the flue rate at SCR reactor inlet need further optimization through combustion adjustment.
Research on the Evaluation of the Developmental Potential in Guangdong’s Listed High-Tech Enterprises under the Policy of Guangdong-Hong Kong-Macao Greater Bay Area
Authors: Liang Weiqi , Kong Yinying , Huang Jiankui , Zeng Jiajun 
Published: December 2019

Abstract
In order to make a scientific evaluation on the development potential of the listed high-tech enterprises of Guangdong-Hong Kong-Macao Greater Bay Area, providing useful advice for investors, enterprises and government, this paper put forward the significant concept of development potential evaluation system of the listed high-tech enterprise in Guangdong-Hong Kong-Macao Greater Bay Area. Combined with the analytic hierarchy process and the entropy method, we determined each indicator with weight, summarized the information of indicators and examined the status of developmental potential of the high-tech enterprises for each year.
Research on Reducing Water Content of Polycrystalline Enterprise Filter Cake
Authors: Pei Lei , Duan Chao , Wan Ye , Qin Qin , Lu Jun , Qi Dong 
Published: December 2019

Abstract
The filter cake in polycrystalline enterprise has high water content and therefore a large volume, which is difficult to regenerate, the common treatment method is to stack and landfill in the waste dumps. With the environmental pressure has became serious these years, it has a great significance to reduce the volume of filter cake. This research studied the filtration performance of different filtration methods for the polycrystalline enterprise waste water, namely traditional Chamber Filter Press, Chamber Filter Press & passing compressed air, Diaphragm Filter Press. The results showed that the water content of filter cake pressed by traditional Chamber Filter Press is 80.6%, the passing compressed air method decreases the water content slightly. However, the water filter pressed method reduced the water content and the volume of the filter cake remarkably. It is more in accord with the national development production strategy of environmentally friendly, safety and efficiently.
Comparison and Analysis of Domestic and Foreign Standards for Safety Assessment for In-Service Pressure Vessels Containing Defects-A Case Study of Drum of Utility Boiler
Authors: Wang Min , Tang Ping , Ling Zhangwei 
Published: December 2019

Abstract
Pressure vessel, a kind of special equipment with high potential explosion danger, will cause catastrophic accident once it explodes or leaks. Ensuring the safe operation of such equipment is of great significance. However, some defects inevitably occur in the process of manufacture, installation and service. Blindly shutdown or repairs will bring huge economic losses. Thus, the safety assessment for in-service pressure vessels containing defects has attracted more and more attention in the industry. The paper analysis the safety assessment for one drum of utility boiler, based on standards of API-579/ASME-2016 Fitness for Service and GB/T19624-2004 Safety Assessment for in-service pressure vessels containing defects. And based on the safety assessment for drum of utility boiler, the difference and advantages of domestic and foreign standards in the aspects of defect characterization, determination of equivalent stress and assessment methods are analyzed and compared. Meanwhile some suggestions for revising the related standards of pressure vessels with defects in China are put forward.
Experimental Study on Flow Characteristics of Hydraulic Multi-Way Valve Based on CAN Communication
Authors: Deng Junhua , Jin Xiajie 
Published: December 2019

Abstract
This paper develops a CAN communication multi-way valve measurement and control system. This paper elaborates on the introduction of hydraulic circuit, the construction of measurement and control system. In the LabVIEW platform, the author designs the application program through the CAN communication card, writes the signal generator to control the multi-way valve, and then draws the flow characteristic curves of the multi-way valve.
Application Research of Eddy Current Testing in Fault Detection of a Ship’s SAB Unit
Authors: Liu Xin , Yang Jiandong , Chen Chao , Chen Wei 
Published: December 2019

Abstract
A ship uses four Sabroe 163 units and two Sabroe 128 units as the chiller for the general and special air conditioning systems. After ten years of operation and use, it entered the overhaul. It is planned to determine the damage condition of the heat exchanger tubes of the evaporator and the condenser by eddy current method to determine the next maintenance plan. Due to the ship’s docking overhaul, the eddy current flaw detection has been equipped with conditions for draining the equipment, cleaning the heat exchange tubes, purging the inner wall of the heat transfer tubes, and drying. This eddy current testing was performed by a maintenance engineer using a dedicated device that was calibrated.