bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new MRPC prototype with diamond-like-carbon coated glass electrodes
Authors: Wang X. , Wang K. , Hu D. , Sun Y. , Shang L. , Zhou Y. 
Published: March 2021

Abstract
The Multi-gap Resistive Plate Chamber
(MRPC) has been used in many high energy physics and nuclear
experiments in the last decade, such as ALICE [1] and
STAR [2]. Normally, the MRPC is built with commercial floating
glass (bulk resistivity ρ≈ 1012Ω· cm), which limits the rate
capability to less than 1 kHz/cm2. In modern high energy physics,
with the increase of colliders beam energy and luminosity, the
rate capability of MRPC has to be enhanced accordingly. One normal
way is to decrease the bulk resistivity ρ of the resistive plate,
as the low resistive glass developed by Tsinghua University for
the CBM experiment [3]. Alternatively, the surface of the
electrode is also a possible path for the neutralization of the
avalanche charges. Recently, we managed to carry this method out
by coating a Diamond-Like-Carbon (DLC) layer on the surface of the
floating glass. The DLC layer, realized by the magnetron
sputtering method, has very good physical and chemical
stability. The demanded surface resistivity can be achieved
easily. A series of DLC-coated glasses with different resistivity
has been tested in our lab. We have also made some MRPC prototypes
and tested them with cosmic rays. Some preliminar results,
including the operating current, the efficiency and the time
resolution, have been achieved. More research is ongoing to
improve the design and performance of this new method of
increasing the rate capability of MRPC.
Research on the operation flow of commercial automobile Ro-Ro terminal
Authors: Shen Mengru , Yao Yang , Jiang Shuailiang , Ma Rong , Wei Yongcun 
Published: March 2021

Abstract
This paper studies and designs the specific import operation flow and export operation flow of modern automobile Ro-Ro terminal, and summarizes the loading and unloading operation plan of commercial automobile Ro-Ro terminal. In addition, this paper puts forward the technical points for the safe implementation of the loading and unloading operation of the automobile Ro-Ro wharf from the three links of the loading operation before, during and after the loading operation, which provides reference for the actual operation of the Ro-Ro wharf.
Research on integrated measurement and control device and test technology in smart substation
Authors: Wen Bo , Li Hengxuan , Zhang Kanjun , Li Peng 
Published: March 2021

Abstract
According to the problems of low system integration, no redundant configuration and wide fault influence range of the measurement and control device, this paper research on the scheme of integrated measurement and control device in smart station, which can greatly reduce the number of measurement and control devices and effectively improve the reliability of integrated system. At the same time, the maintenance technology for integrated measurement and control device can improve the efficiency of maintenance for the whole station.
Research on Motion Generation for Machining Involute Tooth Profile Surface Based on Analysis Method
Authors: Huang Zhidong , Li Ying , Yang Cuiying 
Published: March 2021

Abstract
Starting from the configuration characteristics of gear, the pose relationship between grinding wheel and involute tooth profile surface is clarified. Pose matrix of grinding wheel relative to involute tooth profile surface is established, and the necessary motion modules are obtained. A method for designing motion module combination for machining involute tooth profile surface is created, and module combinations are screened. An effective module combination and a reasonable schematic diagram of motion module combination are gived. The method adopted in this paper is beneficial to motion module design for machining involute tooth profile surface.
Evaluation Research on “Anti-Electromagnetic Interference Performance” of Partial Discharge Detection Device in Complicated Strong Electromagnetic Interference Environment
Authors: He Ninghui , Zhou Xiu , Ma Feiyue , Wu Yang , Ma Yunlong , Ni Hui 
Published: March 2021

Abstract
In a strong electromagnetic environment, most of the current anti-interference methods for partial discharge signals of electronic transformers use digital notch filter, which has poor adaptability and stability. This article studies the source of interference and its impact on partial discharge detection, and has accumulated a relatively complete partial discharge sample database. On this basis, a high-performance arbitrary waveform generator is proposed to restore typical partial discharges, and a platform for quantitatively evaluating the anti-electromagnetic interference capability of partial discharge UHF detection devices through interference simulation is established. Experimental results show that the proposed method has high anti-interference performance.
Optimal Device for Waste Heat Recovery Process Based on Convective Drying Technology
Authors: Liao Yusen , Chen Yujiang , Yu Xinyuan 
Published: March 2021

Abstract
With the development of chemical industry, medicine, food and other industrial production in China, the amount of drying to wet materials is increasing, and the energy consumption of drying is also increasing year by year. Among them, the hot and humid waste gas produced by convective drying technology contains a large amount of waste heat, and the recovery and utilization of waste heat through the two-stage combination of gas-gas heat exchange and gas-liquid heat exchange is a method to reduce energy consumption, which has good economic value and energy conservation and emission reduction value.
Design of Experimental Device for Electrical Performance of Mine DC Stabilized Power Supply
Authors: Long Ma 
Published: March 2021

Abstract
In order to improve the testing method of the electrical performance of the mine-used DC stabilized power supply, this paper designed a test device for the electrical performance of the mine-used DC stabilized power supply based on STM32F407VET6 single chip microcomputer. The device is mainly composed of AC power output, DC power input, analog load, operation control and other units. It can achieve AC0∼1254V AC voltage output underground and the output voltage deviation value, source effect, load effect, and overload of the mine DC stabilized power supply. The current protection value and short-circuit current value are tested and displayed on the display of the industrial computer.
Implementation of the Integration of Business and Finance
Authors: Xu Yueming 
Published: March 2021

Abstract
With the continuous transformation and upgrading of the national economy, the market competition environment is becoming more and more fierce. The response method adopted by each enterprise is to promote the integration of industry and finance, and continuously improve the efficiency of the company’s use of resources and its own decision-making level. In order to ensure that the overall management level of the enterprise has been improved to a certain extent. Based on the importance of business-finance integration for enterprises, this paper analyzes the realization of business-finance integration in detail, puts forward some problems that may be encountered in the realization of business-finance integration, and puts forward some solutions based on the lessons learned in the classroom.
Competition and Valuation: A Case Study of Tesla Motors
Authors: Liu Shiyong 
Published: March 2021

Abstract
Tesla’s rapid rise to become one of the world’s most influential automakers has marked the start of a new era in the global automobile industry, where many of the traditional auto companies were overshadowed by Tesla’s dominance. Judging from Politics, Economy, Society and Technology perspectives, Tesla’s market value can potentially be overvalued due to its leading role in the Electrical vehicle market. Economically, Tesla facilities the growth of global economy by creating more employments and manufacturing factories. Socially and politically, Tesla’s Electrical Vehicle reduces the level of negative externalities (e.g., pollution), which aligns with the developmental frameworks proposed by governmental policies and regulations. Meanwhile in technological aspect, Tesla pioneers the innovative design of battery pack to reduce the overall cost of battery and seeks to integrate better automatic driving system into electrical vehicle. Given those merits of Tesla, overoptimism on its stock price is expected. Therefore, it is important for stock traders who are willing to throw money at Tesla to ruminate over their choices before making the investment. In this study, the results of valuation methods indicate that true market value of Tesla has been overestimated due to its irregularly high operating cash flow, price-to-earnings ratio and enterprise value to earnings before interest, taxes, depreciation, and amortization ratio, suggesting its stock price is overvalued.
Spot trading strategy considering multiple constraints for electricity retailers
Authors: Zhou Guang , Jin Yulong , Chen Kang , Zhou ZhiCheng 
Published: March 2021

Abstract
In order to solve the inert trading and irrational trading of electricity retailers in the spot market trading environment, increase the income of electricity retailers and reduce transaction risk, a spot trading strategy considering multiple constraints for electricity retailers is proposed. Similar days are selected by analyzing the date type and the temperature difference of the spot market trading day, on the basis of similar days, the electricity consumption information of electricity retailers’ agent users, day-ahead and real-time electricity price of sport trading market are predicted, combing the user-side excess profit recovery fee, mid-to-long term shortage recovery fee and mid-to-long term curve deviation recovery fee restrictions in Shanxi Province spot trading rules, optimize the mid-to-long term daily 96 points daily electricity purchase curve and day-ahead 96 points daily electricity biding curve, and use the real data of Shanxi spot market transactions to calculate the multi-day income of the electricity retailers to verify the practicability of the spot trading strategies.
Numerical simulation and structure optimization of control rod drop impact in floating reactor
Authors: Luo Qingsong , Xu Huaijin , Guo Yong , Li Hui , Liu Le 
Published: March 2021

Abstract
In order to simulate the impact of control rod assembly on upper grid plate of reactor core after emergency shutdown of offshore floating reactor, the structure size of upper grid plate was optimized. In this study, ADAMS simulation software was used to simulate the impact stress and strain of 50 mm and 100 mm thick upper grid plate with and without spring buffer at 0.5 m / s impact speed. Therefore, the thickness of the buffer plate on the grid can be reduced, and the simulation results show that the buffer plate can be optimized effectively.
Preparation and properties of titanium alloy with binder based on 3DP method
Authors: Xu Yuanyuan , Gu Hai , Li Bin , Zhang Jie , Jiang Jie , Sun Jianhua 
Published: March 2021

Abstract
TC4 material has good comprehensive mechanical properties, but its development is limited due to its complex preparation process and high cost. Three-dimensional printing forming technology has the characteristics of low cost, wide range of materials, fast forming speed, etc. In this paper, the binder and powder formula of 3D printing molding process were studied. According to the viscosity value, surface tension, bonding effect and the service life of nozzle, the optimal formula of binder was selected. Finally, according to the formulation of binder and mixed powder, TC4 blank was prepared by 3d printing machine, TG-DSC curve of PVA and starch was analyzed, degreasing sintering process was designed, degreasing and sintering of TC4 porous material was carried out. Finally, the performance of the parts under different time - aging treatment is studied.
Research and Prospect of Numerical Simulation of River Water Environment
Authors: Li Yan , Luo Yuhu 
Published: March 2021

Abstract
Healthy water environment is the prerequisite for river resource utilization, social and economic development, new urbanization and healthy and happy river construction. Through the literature database retrieval statistics, summarizes the river water environment research to numerical simulation analysis, environmental quality improvement direction. The indicator system, evaluation method and significance of river ecosystem health assessment, and water ecological security assessment are introduced in detail. Finally, the types of river water environment numerical models are summarized, and the advantages and disadvantages of mainstream models and their application conditions and characteristics are compared and analyzed. In order to provide basic reference for river water environment numerical simulation machine watershed ecological environment protection and maintenance.
The Mechanical Properties Analysis of New Rubber Concrete
Authors: Yang Zhen , Wang YongHua , Li MeiHong 
Published: March 2021

Abstract
Rubber cement-based material is a new kind of green material.At present,the research on the influence of rubber on the properties of cement-based materials has obtained some qualitative results (the addition of rubber can reduce the strength and elastic modulus of materials,but can improve the cracking performance of cement-based materials).But the research of the existing rubber mechanism analysis how to affect the performance of cement base material is not clear,as the research object,this article selects the rubber concrete combination of microscopic,mesoscopic and macroscopic,from the mesoscopic level,based on the composite elastic modulus prediction model,at the same time considering the rubber and the effect of pore rubber concrete elastic modulus prediction formula is established;From the macro level,the rubber concrete compressive strength,bending,split strength,modulus of elasticity drying shrinkage and crack resistance test and research,and analyzed the related theory,based on binary complex modulus of elasticity and calculation model,the equations of the elastic modulus of rubber cement mortar prediction formula,explains the difference of the rubber particle size effects on the mechanical properties of cement mortar,the rubber to reduce the mechanical properties of cement mortar in addition because of its “soft” characteristics.
Research on Fuzzy Comprehensive Evaluation of Professional Teaching Standard Setting Effect in Civil Aviation Higher Vocational Colleges Based on Analytic Hierarchy Process
Authors: Zhang Liang , Guan Yangmei 
Published: March 2021

Abstract
In view of the lack of measurement method for the development effect of teaching standards at present, this paper makes a systematic analysis from the perspective of the development of teaching standards, constructs a systematic and perfect evaluation index system, and designs a comprehensive evaluation model for the development effect of teaching standards. The empirical evaluation of the teaching standards of general aviation aviation aviation technology major by using the above-mentioned index system and evaluation method shows that the teaching standards of general aviation aviation technology major have a clear framework, are forward-looking and leading to a certain extent, play an important role in standardizing the construction and teaching guidance of general aviation aviation technology major, and are an important direction and guideline for personnel training in civil aviation higher vocational colleges.
Effect of Different Phosphorus Modifiers on Microstructure and Properties for Al-Si Alloy
Authors: Hong Xiaolu , Chen Dahui , Xu Ying , Zhu Honglei , Zhang Jiang , Liu Yongqiang , Peng Yingjiang , Hou Linchong 
Published: March 2021

Abstract
The coarse primary silicon structure will deteriorate the material properties of Al-Si alloy. It is necessary to optimize the morphology and size of primary silicon through modification, so as to improve the properties of Al-Si alloy. In this paper, four different phosphorus modifiers, AlP4, P-salt, P-Cu and Al-3P, were used to modify the Al-Si alloy. The microstructure and mechanical properties of the modified Al-Si alloy were compared and analyzed.
Analysis of Current Status of Water Pollution in the Yellow River Based on Principal Component
Authors: Liu Chang , Fan Longjiang , Qin Shipeng 
Published: March 2021

Abstract
The Yellow River is the “mother river” of the Chinese nation. The Yellow River is vital to the economic, social development and ecological environment of the surrounding areas. In recent years, with economic development and the acceleration of urbanization, the water environment and water ecology in the Ningxia section of the Yellow River have been polluted to varying degrees. Therefore, it is urgent to investigate the pollution laws of the water environment of the Yellow River and carry out corresponding treatments. First, we extracted six major pollutant indicators from three aspects, and then we conducted a comprehensive evaluation of the water environment of a certain section of the Yellow River in the past 8 months: The entropy method is used to determine the weight of various pollutants’ impact on the water environment, and the comprehensive evaluation index Q of water quality is obtained. Then the Q value of 8 months is compared with the actual data, and then the expected water environment (Type III water) Define the water environment comprehensive evaluation standard index Q_s, combine Q and Q_s to define the degree coefficient h reflecting the degree of water environment quality, and then divide the degree coefficient into intervals according to the principle of equal division, as the index of water environment classification. Finally calculated h=0.0088, according to the water quality grading index, it is concluded that the comprehensive water quality of a certain section of the Yellow River in the past 8 months has been classified as “poor”, and it belongs to the very poor level in the “poor” category.
Research Progress on Toughening and Strengthening Mechanism of Ternary Boride Base Cermets
Authors: Zhang Xue , Du Jin , Su Guosheng , Zhou Tingting , Zhang Chongyan , Kong Xiangmin 
Published: March 2021

Abstract
Cermets cover a wide range of applications in many related industries, such as aerospace key parts, automotive, mold, etc., and are often used to prepare various wear-resistant and corrosion-resistant roller tables, liners, molds and tools, etc. . Ternary boride-based cermet materials are considered to be the most promising class of cermet materials because of their advantages such as high melting point, high hardness, high wear resistance and high oxidation resistance. However, ternary boride-based cermets exhibits some defects of large brittleness and low toughness. This article summarizes the latest research progress on ternary boride based cermets, and mainly discusses the influence of mechanical properties of ternary boride based cermets and the application of ternary boride based cermets by reinforcements and alloy elements. The current situation and the research direction of ternary boride based cermets are prospected.
Air Quality Index Prediction Based on Improved PSO-BP
Authors: Sun Xiali , Li Shixin , Chen Xi , Wang Kun 
Published: March 2021

Abstract
For air quality index prediction problem, this paper puts forward the optimization based on improved PSO - BP algorithm, the method using particle swarm weights and threshold of BP neural network is optimized, and the update each particle’s position and speed of the weight of adaptive adjustment strategy, to balance the global optimization and local optimization ability, and it has been verified by experiment that the improved PSO - BP neural network model is compared with PSO -BP and GA - BP and BP on prediction accuracy improved.
Study on performance change of phenolic resin impregnated graphite in acid environment
Authors: Chen Yi , Dong Liang , Liu Chongyang , Xu Jinsha , Yang Zhenguo 
Published: March 2021

Abstract
Phenolic impregnated graphite is a new kind of material with higher corrosion resistance and thermal conductivity. In the chemical industry, it is often used to make containers and pipes containing strong acid and alkali medium. In this paper, the working conditions of impregnated graphite materials in the actual production were simulated in the laboratory, and the. mechanical properties and material characterization of impregnated graphite after soaking in sulfuric acid at different temperatures were compared. The results show that the tensile strength of phenolic resin impregnated graphite decreases with the increase of immersion temperature under the action of acid medium and temperature; the results of thermogravimetric analysis show that the inner phenolic resin expands and extrudes graphite particles to produce internal stress, and the graphite particles will fall off partially, but the chemical structure of phenolic resin does not change.
Transparent SiOxCyHz Barrier Film Prepared by PECVD with Upper and Lower Pair Electrode Rolls Structure
Authors: Dong Maojin , Wang Xiaojun , Feng Yudong , He Dan , Qin Lili , Wang Yi 
Published: March 2021

Abstract
Flexible and transparent barrier film is demanded in the fields of organic solar thin-film cells, flexible organic light-emitting diodes, electronic paper and vacuum insulation boards. To prepare films with high water resistance, flexible SiOxCyHz films were prepared on PET using HMDSO as monomer and Oxygen (O2) as reaction gas. SiOxCyHz films were prepared by plasma enhanced chemical vapor deposition (PECVD) with upper and lower pair electrode rolls structure, with the width of electrode rolls up to 600 mm. The influences of oxygen content, film thickness, oxygen/monomer ratio, reaction vacuum degree on water vapor transmission rate (WVTR) were studied. This coating method of oxide high barrier film has great application potential in the development of barrier film industry.
Development of Automatic Control System for Cutting Fluid Filtration
Authors: Hu Kai , Phonepasith Manivone 
Published: March 2021

Abstract
Cutting fluid by which the cutting tools and workpieces can be cooled and lubricated play an important role. The filtration and recycling for cutting fluid will effectively remove the iron filings, dust and impurities from the cutting fluid, reduce the secondary pollution to the processing site in the process of recycling, and improve the result of cutting fluid recycling. The paper provides a kind of the design of automatic filtering control system for cutting fluid, the system can recycle and filter the cutting fluid which has been used in the process of production, and recycle again, so as to save energy greatly, protect the environment and increase economic benefits. meanwhile the whole recycling and filtering process can be controlled automatically or manually on the touch screen, and the status of each working part of the system can be displayed in real time, and the judgment algorithm for filter belt replacement has been optimized, so as to improve the operating efficiency of the system further, enhance the convenience, stability and reliability.
The effect of recycled WPC on the performance of composite materials
Authors: Luo Tong , Cheng Shangwei 
Published: March 2021

Abstract
In order to improve the comprehensive utilization of waste Wood-Plastic Composites(WPC), high-density polyethylene(PE)and polypropylene(PP) WPC composites filled with recycled WPC were prepared. The effects of different recycled WPC content on the processing performance, mechanical properties and artificial accelerated aging performance of composite materials were studied. The results show that when the quality fraction of recycled WPC is less than 20%, it has little influence on the properties of composite materials. With the increase of the quality fraction of recycled WPC by more than 20%, all the processability, mechanical properties and artificial accelerated aging property of composite materials show a significant decline.