bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the Influence of Platform Economy on Transformation and Upgrading of Chinese Traditional Manufacturing Industry - A Case Study of Red Collar Group
Authors: Song Hanyu , Liu Mengyun 
Published: January 2020

Abstract
The profitability of the traditional manufacturing industry is sluggish and fails to well adapt to the current trend of economic globalization. In the context of industry 4.0, it is imperative for the traditional manufacturing industry to transform and upgrade in an all-round way in the market-oriented and government-led environment. At this time, platform economy furnishes a good impetus for the transformation and upgrading of traditional manufacturing industry. Traditional manufacturing industry adapts to the needs of the external market environment through platform structure, adjusts factor input premised on dynamic changes in factor endowment, integrates scientific and technological revolution, and gradually cultivates competitiveness through continuous technological innovation, thereby achieving the transformation and upgrading of industry. In the background of conversion of era, this paper explores the innovation of traditional enterprises in the current historical background from the angle of evolution, attempting to reveal that platform economy helps traditional manufacturing enterprises to update their production methods, restructure their management structures and set up supply chain thinking, thereby pushing forward their transformation and upgrading. Taking the transformation and upgrading of Red Collar Group as an example, this paper analyzes the process of rapid learning, resource integration, innovation iteration, self-fission, and continuous evolution of the enterprise premised on platform economy, thereby proving the positive impetus of platform economy to the transformation of traditional manufacturing industry and testing its logical rationality. The research concludes that platform economy will become one of the significant strategic modes of transformation and upgrading of traditional manufacturing industry in China.
Research and Implementation of Indoor Location for Home Service Robot
Authors: Si Haifei , Hu Xingliu , Xu Li 
Published: January 2020

Abstract
At present, the trend of population aging in the world is becoming more and more serious. Many countries have implemented many measures to solve this problem. Various high-tech products to help the elderly and disabled have also entered the lives of the elderly. In order to ensure the safety of the elderly or disabled at home, this paper designs a room using SLAM algorithm of lidar sensor under ROS (Robot Operating System) environment. Wheeled home service robots with internal positioning, mapping and multi-point continuous navigation can collect and analyze environmental data such as temperature, humidity, smoke and rainwater outside the windows and broadcast them by voice while navigation. After many debugging, this design has realized the function of indoor autonomous navigation, and timely alarm and control of abnormal environmental data in the home.
Optimization design of gear reducer based on multi-attribute decision making and reliability sensitivity
Authors: Tong Cao , Tian Zhuang 
Published: January 2020

Abstract
In order to solve the complexity and implicitness of lightweight optimization of the gear reducer, this paper constructs a multi-objective reliability optimization mathematical model of the gear reducer. and to obtain multi-objective Pareto solution, artificial intelligence algorithm is used to optimize structural parameters. Then, through repeatedly changing the structural parameters of the reducer, the experimental simulation analysis is carried out to obtain the maximum working stress. Based on the idea of the weight reduction and miniaturization, the stress state and reliability index values under different structural parameters are compared and analyzed. In order to determine the optimal solution of structural parameters, multi-attribute decision theory is used to determine the solution. Finally, in order to effectively reveal the inherent variation of attribute values and decision results and quantitatively reflect the impact of various structural parameters on system reliability, reliability sensitivity analysis of the gear reducer is carried out by the response surface-Monte Carlo and DPS methods. Thereby, an optimized structure that meets the safety reliability and the appropriate economy is obtained, and this study produces a balanced and improved optimized design that is coordinated with cost, quality, volume, safety and stability.
Numerical research on sealing performance of high speed and high pressure centrifugal compressor seal
Authors: Wu Jun , Zhao Zhenxing , Dai Lu , Lao Xingsheng , Lv Weijian 
Published: January 2020

Abstract
In this paper, two seal schemes of stepped labyrinth seal and straight through-hole seal are selected for the shaft end seal of S-CO2 centrifugal compressor with the output of 100kW. The full three-dimensional CFD numerical simulation method is adopted to analyze and compare the sealing characteristics of two S-CO2 seals in S-CO2 centrifugal compressor under different outlet back pressures and sealing gaps. The results show that the leakage flow rate of S-CO2 stepped labyrinth seal and through-hole seal increases with the decrease of back pressure. The leakage flow rate of the stepped labyrinth seal and the through-hole seal reaches the corresponding critical value when the back pressure is 1.0 MPa and 3.0 MPa respectively. The critical leakage flow rate of the stepped labyrinth seal and the through-hole seal under the condition of 0.1 mm sealing gap is 0.158 kg/s and 0.128 kg/s respectively. Compared to the through-hole seal, the stepped labyrinth seal can withstand greater pressure differentials at the same sealing gap and has superior S-CO2 sealing performance.
Analysis of Factors Influencing the Resistance of a Type of Air Filter Paper Based on SPSS
Authors: Qi Peiyun , Yan Chunxiao , Zang Chuanqin , Xu Jiayu , Huang Xingqi , Dai Xuezhi , Jin Yanren , Zhao Ting 
Published: January 2020

Abstract
The thicknesses, basis weights and resistances of a type of air filter paper randomly sampled were tested by experiment. The statistical analysis of the test data was carried out by multiple linear regression analysis of the statistical software SPSS19.0. The conclusion were as follows: when the paper had a basis weight variation from 55.2 g/m2 to 59.8g/m2 and a thickness variation from 0.385mm to 0.406mm, α=0.05, basis weight variation on resistance existed significant influence, the regression equation was Δp=2.551w, correlation coefficient R2=0.83; thickness variation on resistance did not exist significant influence.
Diamond Forming Tool Innovative Design Based on Segments Thickness Dimension Compensation
Authors: Xing Baoliang , Zheng Chunying , Wang Jing , Xue Shanshan , Cao Huiying , Zhang Zhengmei 
Published: January 2020

Abstract
Based on machining experiments the diamond forming tool wear degrees of irregular area were studied, the tool wear rate mathematical model was deduced by regression analysis and the improvement project of tool was innovatively designed. Through the diamond forming tool segments thickness dimension compensation, the tool wear of irregular area can be uniformly achieved, the performance of diamond forming tool has been increased highly and the diamond forming tool life is greatly extended.
Research on Influencing Factors on Rheological Properties of Chitosan/Starch Film Slurry
Authors: Sun Kaiqiang , Li Jianyong , Li Fangyi , Zhou Xin , Wang Zunyi , Wang Lei , Sun Xu , Cui Jinfeng , Zhang Chuanwei 
Published: January 2020

Abstract
In order to improve the industrial production efficiency of chitosan/starch film, reducing slurry rheology is an important measure. This paper explored that the temperature, chitosan starch ratio, plasticizing different components had a great impact on the rheology of the slurry. As the starch content and temperature increased, the rheology of the slurry first decreased and then increased. Finally, it was determined that when the slurry was transported at 60°C with chitosan: starch = 1:1.5 and only the chitosan was plasticized, the viscosity was the minimum. The viscosity of the slurry was related to the hydrogen bond formed by the slurry. The more hydrogen bonds, the greater the viscosity. Plasticizing chitosan destroyed the crystal structure and facilitated the formation of the network structure, which was conducive to the shear flow of the slurry.
Preliminary Study on the Innovative Design of Original Bamboo Furniture Based on the Coordination Evolution Rules of Subsystems of TRIZ Theory
Authors: Dong Wenying , Dai Xiangdong , Yao Jin Jin , Xiong Yi 
Published: January 2020

Abstract
The original bamboo furniture is green and environmentally friendly and is a good substitute for wood. But at present, the design of original bamboo furniture develops slowly and its added value is not very high. By applying the coordinated evolution principle of subsystems in TRIZ technology evolution theory, this research makes a preliminary exploration on the innovative design methods of original bamboo furniture in form and structure in the purpose of bringing inspiration and new thinking to the innovative design of original bamboo furniture. In this way, promoting the development of original bamboo furniture design faster and better.
Measurement of in-plane thermal conductivity of self-suspended thin films
Authors: Xu Liqiang 
Published: January 2020

Abstract
A method for in-plane thermal conductivity measurement of self-suspended thin films by steady-state infrared thermal thermography is introduced. Based on the one-dimensional heat conduction equation, a theoretical model of temperature distribution on the surface of thin film at steady state is established. The simulation results show that the error between in-plane thermal conductivity and theoretical value is less than 3% when the temperature rise of the film is less than 5K. By measuring the boundary temperature and thickness of the film, the in-plane thermal conductivity and emissivity can be obtained simultaneously without measuring the absorption of visible light by the film. Polyimide film with the thickness of 550 nm is experimentally investigated by this method. We find that the in-plane thermal conductivity is 2.15W/mK and emissivity is 0.93 by fitting temperature distribution curve. These results validate the method developed.
Experiment and finite element analysis study on the deflection of aluminum extruded 6063-T5 hollow structural beam
Authors: Ho Minghsiung , Lee Pinghui , Ye Chao , Lin Chipang , Huang Chenfu 
Published: January 2020

AbstractIn this study, the tensile tests were performed on samples extruded from aluminum beam to confirm the material properties of the various parts. Then, the beam was cut into lengths of 1160 mm and 680 mm to perform the bending test, and the beam loading point deformation was recorded. At the same time, the amount of beam deformation caused by three type beam fixing methods was compared. The Solidwork 3D CAD software used to build the beam model and perform finite element analysis. Among them, the analysis results of different boundary conditions were compared with the experimental results. The experimental load conditions were used to calculate the theoretical deformation formula amount through the beam theory deformation formula of material mechanics. It is to compare beam deformation data of experiments, finite element analysis, and theoretical formulas, and explore possible causes of differences.
Research on laser water vapor concentration detection technology in the air-sea flux observation
Authors: Zhang Ke-Ke , Zheng Xue-Yong , Chen Shi-Zhe , Wan Xiao-Zheng , Zhang Ji-Ming , Zhao Qiang , Wang Bo , Qi Liang 
Published: January 2020

Abstract
In the observation of water vapor flux at air-sea interface, the collection frequency of water vapor concentration is more than 10 Hz. High-speed and high-precision measurement of water vapor concentration is an urgent problem to be solved in the observation of water vapor flux at air-sea interface. The ratio of the peak-peak value of second harmonic to the average value of first harmonic is used to measure water vapor concentration based on tunable diode laser absorption spectroscopy. The sensitivity of laser water vapor concentration detection equipment caused by marine salt fog and dust is reduced through precise optical design, and the water vapor concentration at the air-sea interface is calculated using a binary polynomial fitting algorithm. The response frequency of the laser water vapor concentration analyzer is 40 Hz. The water vapor concentration values from the laser water vapor concentration analyzer and LI-7500 CO2/H2O gas analyzer are collected synchronously in real time using LabVIEW software. The comparison results show that they have good consistency in the trend and response speed of water vapor concentration, and the measurement deviation of water vapor concentration is within ±1%. The experimental results show that it can meet the needs of high-speed, high-precision measurement of water vapor concentration in the air-sea interface water vapor flux observation.
Infrared contrast characteristic of satellites
Authors: Lv Xiang-Yin , Jin Wei 
Published: January 2020

Abstract
Using infrared characteristic of space target for detecting and identifying the space target is a kind of effective method. Infrared radiation contrast study of satellite has great significance for both detecting and identifying the satellite, and monitoring satellite condition. In this paper, the method to calculate the radiant heat flux of satellite is given firstly. Then, the mathematical model of the surface temperature of satellite is obtained and the numerical calculation is done. The calculated numerical data is similar to the telemetry data, which proves that the orbit flux and temperature models are correct. Finally, the infrared radiant contrast of every surface on the satellite’s body and solar panels were calculated and analyzed. The results show that, on the one hand, satellite infrared radiation in long wave infrared band is larger than that in medium wave infrared band. From the point of view of the range coverage, use the long wave infrared is more advantageous to detect satellite. And on the other hand, satellite infrared contrast in medium wave infrared band is much larger than that in long wave infrared band. From the point of view of the resolution of image detail, use the medium wave infrared is more advantageous to identify satellite.
Effect of Al Content on the Stability of MgF2 Powder in Air at High Temperatures
Authors: Chen Hukui , Huang Jie , Jiang Hongli 
Published: January 2020

Abstract
The effect of Al on the stability of MgF2 powder at 600–1000 °C in air has been investigated by XRD, EDS and SEM. It is found that the thermal stability of MgF2 is strongly influenced by both Al content and temperature. With the increase of Al content and temperature, MgF2 was gradually oxidized to MgO, that is, the thermal stability of MgF2 was gradually lowered. The reason that the addition of Al causes the thermal stability of MgF2 to decrease may be related to the oxidation of Al and the formation of MgAl2O4 at high temperatures.
Simulation on Molten Pool Characteristics of Al2O3 Laser Selective Melting Based on Energy Input Model
Authors: Chen Xiaobing , Sun Quan , Sun Quanping , Wu Haibing , Xu Qian 
Published: January 2020

Abstract
In order to obtain the formation rule of molten pool characteristics in SLM process of ceramics, an energy input model for SLM process of Al2O3 ceramics is established. The model is related to laser power P, scanning speed v, scanning spacing s and thickness h of powder layer. The influence of process parameters in the energy model on molten pool characteristics is analyzed by simulation of temperature field of multi-layer and multi-channel SLM process. The simulation results show that when the laser power P is 105W, the scanning speed v is 50mm/s, the initial temperature of powder is 330°C and the thickness of powder layer is 0.20mm, the molten pool formed is easy to form Al2O3 ceramic specimens.
Influences of Feedstocks and Laser Remelting on Erosion Resistance of Al2O3-13wt.%TiO2 Coatings Prepared by Plasma Spraying
Authors: Wang Dongsheng , Zhou Xinghua 
Published: January 2020

Abstract
Conventional and nanostructured ceramic coatings were prepared with conventional and nanostructured aggregate Al2O3-13wt.%TiO2 ceramic powders through plasma spraying and plasma spraying-laser remelting combined technique. Influences of feedstocks and laser remelting on erosion resistance of the prepared coatings were discussed, and the erosion failure mechanisms of four types of coatings were discussed. Results demonstrate that compared with coatings prepared by plasma spraying, the coating prepared by laser remelting has better erosion resistance. Given the equal conditions, nanostructured coating shows stronger erosion resistance than conventional coating. Conventional ceramic coating shows typical brittle erosion characteristics and nanostructured ceramic coating also shows brittle erosion characteristics, accompanied with certain degree of plastic erosion characteristics. Erosive wearing of plasma coating is mainly lamellar peeling, accompanied with certain degree of brittle ceramic particle crushing. Coating prepared by laser remelting present crack initiation and propagation on near surface, finally leading to crystal crushing and peeling of remelting layers.
Mechanical properties of the wet mixed geopolymer concrete based on CDG and Slag cementitious materials in ambient curing temperature
Authors: Zha Xiaoxiong , Wang Kai , Zhu Jiayuan 
Published: January 2020

Abstract
Although considerable research has been conducted on alkali-activated fly ash cementitious materials for geopolymer concrete production, few of which concentrated on the slag-based geopolymer concrete. This paper presents the results of an experimental investigation on the 7-day & 28-day compressive strength, as well as 28-day flexural strength of the wet mixed geopolymer concrete based on CDG and slag cementitious materials cured at ambient temperature. A total of 90 specimens were tested. The cementitious materials content, sand ratio, as well as the liquid-solid ratio were selected as the main parameters. Besides, the new alkali activator system was adopted to prepare the geopolymer. Effects of these variables on the compressive and flexural behavior of the wet mixed geopolymer concrete are plotted throughout this paper.
Prediction of flue gas acid dew point temperature distribution range in boilers
Authors: Bi Cheng , Li Debiao , Yang Xu , Lu Yuan , Zhang Jianlong 
Published: January 2020

Abstract
Prediction of the acid dew point temperature of flue gas has a great effect on the heat exchangers design or control as recover energy from the boiler exhaust gas. The present study focuses on the prediction of the flue gas acid dew point temperature as well as its distribution interval, which can further help to prevent and resist the low temperature corrosion from the flue gas. Popular prediction models of acid dew point are reviewed. The 1973 version of Soviet Union calculation standard model has a priority to calculate the mean acid dew point prediction in coal fired boilers, and the Okkes model is also recommended for different types of boilers. Several groups of experimental and published data are substituted to different prediction models for analysis, and the results show that the Verhoff & Banchero model and Haase & Borgmann model can be explored to calculate the upper and lower limits of the distribution interval of the acid dew point.
Study on the effect of molten ash on the combustion process for biomass
Authors: Xu Yao , Zou Xun , Jin Shuai , Zhai Ming , Dong Peng 
Published: January 2020

Abstract
In this study, the high temperature visual test system (HTVTS) and high temperature thermogravimetric test system (HTTTS) were set up to observe the formation process of ash, thereby analyzing the mechanism of biomass melt combustion. Then, the effect of the molten ash on the combustion process was investigated. Results show that during the combustion, once the local temperature of the biomass particle is higher than the ash melting temperature, the generated ash could be melted and contracted into a spherical shape by the surface tension. The molten ash located in the interior of the biomass particle adhere to the char surface, thereby preventing the contact between char and oxygen. The molten ash located on the surface of biomass particle could drop down from the surface of biomass particle. When the conversion rate is higher than 45%, the effect of molten ash on the reaction rate becomes more obvious.
Structure optimization and thermal field analysis of biogas derived methane fueled Solid Oxide Fuel Cell
Authors: Zhan Ruobing , Wang Yang , Du Qing , Jiao Kui 
Published: January 2020

Abstract
The suitability for using various gaseous fuels makes the Solid Oxide Fuel Cell (SOFC) the most promising heat-electricity cogeneration device. Thermal field distribution of SOFC directly determines whether the cell is operating in sufficient catalytic activity and weakened by thermal stress. For biogas derived methane fueled SOFC, the internal reforming reactions can cause the inhomogeneous temperature distribution. So it is crucial to optimize the thermal field to achieve optimal cell operation state. In this paper, a 3D muti-physics model is developed to study the improvements of a new cathode flow field structure. When adopting new cathode structure, the power density increases by over 11%, and the maximum temperature gradient can be evidently reduced.
Numerical investigations on entropy generation in cross-wavy channels
Authors: Shi Xusheng , Wang Yongwei , Huai Xiulan 
Published: January 2020

Abstract
The numerical study to research the influence of ratio of channel amplitude to pitch of cross-wavy on entropy generation is conducted in this paper. In Reynolds number range of 200-1200, five types of cross-wavy channel are analyzed. The simulation results show the thermal entropy generation rising rate is fast when Reynolds number less than 700 and then flat. In addition, it is smaller with increasing channel amplitude to pitch value. The frictional entropy generation increases almost linearly with Reynolds number. However, it is much less than thermal entropy generation under the same conditions. In brief, the channels which have larger ratio of amplitude to pitch can reduce the total irreversibility to the least under the same flow conditions.
Research of a blackbody cavity for effective integrated emissivity with finite volume method
Authors: Liu Bo , Wang Chong-yuan , Xu Jun-long , Wang Zhi-yuan , Zhu Peng-fei 
Published: January 2020

Abstract
Temperature is a critical parameter for energy efficiency measurement evaluation. High-performance blackbody radiation source is the key equipment for highly precision reproduction of radiation temperature. The effects of blackbody geometric parameters, cavity material emissivity, and temperature distribution on integrated effective emissivity e and normalized spatial integrated effective emissivity variation were studied by finite volume method. The numerical simulation has a good agreement with the result computed by Monte-Carlo method. The results show that the isothermal cavity has a higher e and a smaller than the non-isothermal. A smaller aperture diameter Da
and a higher material emissivity are benefit for a higher e and a more uniform distribution on detector of e. The results provide references for the design and study on high-performance blackbody radiation source.