bluuebunny/crossref_metadata_2025_split huggingface dataset:
Overview of the LAMOST-Kepler project
Authors: Fu Jian-Ning , Cat Peter De , Zong Weikai , Frasca Antonio , Gray Richard O. , Ren An-Bin , Molenda-Żakowicz Joanna , Corbally Christopher J. , Catanzaro Giovanni , Shi Jian-Rong , Luo A-Li , Zhang Hao-Tong 
Published: October 2020

Abstract
The NASA Kepler mission obtained long-term high-quality photometric observations for a large number of stars in its original field of view from 2009 to 2013. To provide reliable stellar parameters in a homogeneous way, the LAMOST telescope began to carry out low-resolution spectroscopic observations for as many stars as possible in the Kepler field in 2012. By June 2018, 238 386 low-resolution spectra with SNR
g
≥ 6 had been collected for 155 623 stars in the Kepler field, enabling the determination of atmospheric parameters and radial velocities, as well as spectral classification of the target stars. This information has been used by astronomers to carry out research in various fields, including stellar pulsations and asteroseismology, exoplanets, stellar magnetic activity and flares, peculiar stars and the Milky Way, binary stars, etc. We summarize the research progress in these fields where the usage of data from the LAMOST-Kepler (LK) project has played a role. In addition, time-domain medium-resolution spectroscopic observations have been carried out for about 12 000 stars in four central plates of the Kepler field since 2018. The currently available results show that the LAMOST-Kepler medium resolution (LK-MRS) observations provide qualified data suitable for research in additional science projects including binaries, high-amplitude pulsating stars, etc. As LAMOST is continuing to collect both low- and medium-resolution spectra of stars in the Kepler field, we expect more data to be released continuously and new scientific results to appear based on the LK project data.
Analysis on the Characteristics of the Casualties Caused by Earthquake Disasters in China in Recent Years
Authors: He Ping 
Published: October 2020

AbstractThis paper intends to re-study the characteristics of earthquake disasters according to the 184 earthquake disaster events that occurred in mainland China from 2001 to 2016 on the basis of previous studies. Taking 184 earthquake cases as samples, a quantitative analysis of the main coupling factors of casualties caused by earthquakes is carried out to lay the foundation for establishing a more accurate casualty assessment model for earthquake disasters.
MRI Characterization of the Pore Structure Evolution by Forced Aeration during Heap Leaching
Authors: Yu Shaofeng , Gao Pengju 
Published: October 2020

Abstract
In spite of lots of methods in improving the performance of heap leaching, much controversy on the industrial applications remain. A relatively new and effective idea of introducing aeration to heap leaching, especially in abiotic heap leaching, may be a better way. Experiments on water content (WC) of the leaching columns employing a novel heap leaching apparatus and Magnetic Resonance Imaging (MRI) by changing aeration intensity (AI) were conducted. The results show that WC within the heap can be effectively increased which may enlarge the area of liquid-solid interface to probably improve the leaching efficiency and performance.
Landscape Design of Road Environment based on Computer
Authors: Gu Xin , Hong Tao 
Published: October 2020

Abstract
The environmental landscape design of the road is an important embodiment of the historical background and cultural accomplishment of a city and a region. In the computer age, environmental landscape design becomes more simple. This paper mainly describes the main principles and design ideas of computer-based road landscape design. This paper also put the idea of green design in landscape design.
Research on the Curriculum Reform of “Plant Planting Design” Based on SketchUP
Authors: Zheng Yi 
Published: October 2020

Abstract
With the rapid development of society, garden has become an indispensable leisure place in the city. Therefore, landscape design has become a hot professional. “Plant planting design” is the core professional course of landscape architecture specialty, which every landscape designer must learn. Plant planting design is an indispensable link in the process of landscape design, which is an important content in the process of landscape professional training. However, most engineering schools lack of teaching experience in plant planting design, which will lead to students not fully understand plant planting design. The SketchUP technology, also known as computer-aided technology, refers to the use of computers and graphics equipment to help designers perform design work, which can greatly improve people’s work efficiency and enable people to have concrete cognition of abstract things. Therefore, we must reform the course of plant planting design, which will improve students’ interest and enthusiasm, and actively use the SketchUP and other related design tools in the teaching process. First of all, this paper analyzes the problems of curriculum teaching. Then, some suggestions are put forward.
Development Characteristics and Development Technology Analysis of Low Permeability Oilfield
Authors: Zhang Nan 
Published: October 2020

Abstract
Oil is an important energy resource in the world. Therefore, the oil extraction efficiency will affect the social and economic development of our country, which requires us to constantly improve our own extraction technology and improve the efficiency of oil development. Although China is a country with abundant oil reserves, most of the oilfields in China are low permeability ones. There are many problems in Low permeability oilfield (hereinafter referred to as LPO), such as small porosity, low permeability, difficult production and so on. Therefore, this paper first analyzes the characteristics of LPO, such as low natural productivity, poor water absorption capacity, rapid decline after fracturing. Therefore, China has made more research on LPO, which has formed a relatively complete series of LPO production technology. Finally, this paper summarizes the current development technology of LPO in China, which will realize the economic and effective development of LPO.
New Energy Formats and Quantitative Methods
Authors: Wu Shanshan , Wu Chenrui , Tang Rui 
Published: October 2020

Abstract
The article mainly deduces and summarizes the definition and classification of new energy format based on the concept of energy format, combined with industry consensus and objective description. From the perspective of changes in product types, production methods, and organizational forms, they are divided into five types of new energy formats: energy format with integration of production and consumption, energy format of clean supply, vertically integrated energy format, energy format of Multi-energy complementary and energy format of the integration of information and industrialization. Aiming at the investment and employment of new business forms, construct a data processing method and give a quantitative research basis for new energy formats. It is found that from an overall point of view, the new energy format has shown a good development trend, especially the rapid development of new energy represented by wind power and photovoltaic power generation.
Classroom Environment Empirical Evaluation of the Professional English for Chemistry Based on Project-based Learning Model
Authors: Xu Xiaoshu 
Published: October 2020

Abstract
With the development of the education internationalization, the teaching modes of professional English are becoming more and more diversified, and Project-based learning method is one of the most powerful ones. In order to evaluate the professional English classroom environment, an effective instrument is needed. A sample of 290 students were taken from one university in Dalian, using the methods of exploratory factor analysis, Cronbach’s Alpha, correlation test of SPSS 22.0. The results indicate that most items in the instrument can be categorized into 12 factors which are internally reliable. The reliability coefficients are so high that the items in one factor have certain homogeneity. The formative evaluation and the terminal evaluation are significantly correlated and significantly influenced each other. Thus, in the project-based professional English for Chemistry classroom, the learning behaviors and interpersonal support should be fully focused on, in order to optimize students’ ways and the processes of classroom participation, enhance the learning effects and learning satisfaction.
Analysis on the Survivability of Equipment Support System of Non War Military Operations Based on Operational Efficiency
Authors: Qi Ou , Zhang Lei , Shi Wenhua , Wang Yanli 
Published: October 2020

Abstract
In the process of carrying out the mission, the equipment support system of non war military operations will be interfered and destroyed by various kinds. How to ensure the normal operation of the equipment support system of non war military operations under the interference and destruction is an important factor that restricts the effectiveness of our military non war military operations. Therefore, scholars at home and abroad have carried out a lot of research.
Investigation on Multi-level Extensive Evaluation of the Safety Risk of Tank Guns’ Live Shooting
Authors: Song Chao , Luo Jianhua , Jia Yizhuo 
Published: October 2020

Abstract
Adopting a systematic perspective to create the safety management evaluation of the index system of tank guns’ live shooting, which formed from three elements, for example, people, tools, and management. Next, an extensive evaluation approach used to install an evaluation model for safety management and more impartial entropy utilized. Later, the value method used to estimate the weight of every layer of indicators, and then the evaluation model is employed to a standard case investigation. Hence, the application outcomes prove the practicability of the evaluation model.
Theoretical investigation of incomplete ionization of dopants effect on p+nn-n+ 4H-SiC IMPATT diode
Authors: Chen Qing , He Wei , Cheng Cankun , Xue Yanxia 
Published: October 2020

Abstract
The effect of incomplete ionization of dopants on p+nn-n+ 4H silicon carbide (4H-SiC) impact-ionization-avalanche-transit-time (IMPATT) diodes has been investigated. Breakdown voltage, avalanche region width, DC to RF conversion efficiency and RF output power of the 4H-SiC IMPATT device with incomplete and complete ionization are given at different temperatures. Theoretical analysis reveals that the influence of the incomplete ionization of dopants on the performance of the p+nn-n+ 4H-SiC IMPATT devices cannot be ignored.
Modeling and Calculation of Coupled Heat Transfer for Heating Process of Perforating Test Tool
Authors: Hou Yongqiang , Jia Guangzheng 
Published: October 2020

Abstract
The perforating bullet detection experimental device is used to simulate the downhole high-temperature and high-pressure environment in which the perforating bullet performance is test. The perforating test tool is inside liquid-filled cylindrical wellbore cavity that is heated by heating wellbore wall with natural convection heat transfer. A mathematical model for unsteady heat-fluid-solid coupling heat transfer between the liquid in the wellbore cavity and the perforating test tool was established. The projection method is used to numerically solve the mathematical model, and the results of the dynamic heating evolution process of the perforation experimental device are calculated. The internal flow field and temperature field of the perforation experimental device with and without the perforating test tool in the wellbore are analyzed. Through the calculation and analysis results, it is found that the perforating test tool inside the simulated wellbore cavity has a greater influence on the flow field and temperature field.
Research on Automatic Cable Monitoring System Based on Vibration Fibber Optic Sensor Technology
Authors: Feng Yuan , Bai Fan , Zhu Yong , Cao Zhuobin , Ge Zhifeng , Fei Wu , Guo Pengcheng 
Published: October 2020

Abstract
To ensure the safety of power cables, temperature monitoring of power cables is critical. In view of the shortcomings of some optical fibre measurement products, a long-distance distributed optical fibre sensor is proposed, which has the advantages of high measurement sensitivity, fast response speed, low false alarm rate, large measurement length, and stable operation. The distributed optical fibre vibration sensing measurement equipment is used to monitor the vibration signals along the cable in real time, and the signal changes before and after the breakdown fault are visually displayed by the patio-temporal spectrum diagram, and the vibration signal of the breakdown point is analysed in time and frequency. The performance of the system was tested, and the experiment verified that the temperature measurement accuracy error range of the temperature measurement system is about ± 5 °C, and it has good stability. At the same time, the positioning accuracy is very high, and the fault point can be accurately located. This can avoid the occurrence of cable accidents.
Research on Typical System Platform of Mechanical and Electrical Equipment Based on Embedded Technology
Authors: Zhang Chenyu 
Published: October 2020

Abstract
Embedded technology is a new development of computer technology and has a wide range of applications and development prospects. The application of embedded technology has greatly promoted the development of the field of electromechanical control and improved the performance of electromechanical control equipment. Aiming at the problem that the mechanical and electrical products have low technical content and cannot meet the requirements of modern engineering, this paper uses DM642 as the core to build an embedded electromechanical device composed of video / audio signal processing modules, memory expansion modules, external interface modules, etc. A typical system platform proposes a motion detection method and an abnormal sound recognition algorithm based on the improved frame difference method. This paper introduces the composition of the system platform in detail, and also studies the application scheme of the embedded operating system for electromechanical equipment. Using this system platform can greatly improve the digitization, information and automation of mechanical and electrical products, and provide reference value for the technological upgrading of traditional manufacturing.
Ultimate Strength Analysis of Local Thinning Tee Pipe Considering Plastic Strengthening Effect
Authors: Su Wei , Luo Wenhao , Dong Xianshan , Liu Renhuai 
Published: October 2020

Abstract
In this paper, the locally thinned three-way structure under internal pressure is analyzed based on the theory of plastic strengthening effect and limit analysis. A finite element model is presented through ANSYS commercial software to simulate the mechanical properties of orthogonal and oblique three-way structures. This paper systematically analyses how the shape and size of the thinning effect the plastic limit load of the pipe and what is the typical failure mode of plastic failure. Some valuable conclusions are drawn, which provide a useful reference for the design and production of the tee pipe.
Research on Liquid Characteristic Sensing Technology of Quartz Tuning Fork Based on COMSOL Multiphysics
Authors: Ou Chunqian , Ding Jiafeng , Li Xinmei , Xiao Dihong , Zhang Cong 
Published: October 2020

Abstract
In this paper, the relationship between the liquid characteristic parameters and the resonance characteristics of the quartz tuning fork is studied through impedance analysis and computer simulation. Firstly, the three-dimensional model of the quartz tuning fork driven by AC voltage is established using finite element analysis software, and the vibration mode and frequency response of the quartz tuning fork were analyzed. Then, the impedance spectrum of the quartz tuning fork in the air is measured by experiment, and its equivalent circuit parameters are estimated. This result is consistent with the equivalent circuit parameters estimated by simulation, which proves the effectiveness of the simulation. Finally, the values of the geometric parameters A and B are calculated by the frequency response of the quartz tuning fork in the liquid and used for the calculation of the density and viscosity of the liquid with unknown characteristics. The research provides a theoretical basis and experimental support for the design of quartz tuning fork liquid characteristic sensors.
Comprehensive Evaluation and Experimental Research on Power Performance of BEV
Authors: Hu Zongmei , Huang Yangzhi 
Published: October 2020

Abstract
This paper compares the differences between battery electric vehicles (BEV) and fuel vehicles, concludes the blind spots in the dynamic evaluation of BEV, and sets up mathematical models of the power performance of BEV, and builds a subjective evaluation system based on mathematical modeling. Test the objective evaluation data of the benchmark model, and subjectively evaluate the test results. The subjective evaluation test shows that the problem of longer acceleration time in the objective performance test of model 2 is mainly caused by the acceleration and deviation of the car in moving, which can reflect the results of the objective test and reflect the true feelings of the driver. The system can be used as the main basis for the evaluation of new BEV on the market. It is worthy of further promotion and research.
Research on Position Error of External Radiation Radar Sensor Based on 3D Positioning Algorithm
Authors: Duo Liu 
Published: October 2020

Abstract
The paper establishes a measurement-launch station correlation model of a single-frequency off-line radar system, derives the principles of the three-dimensional TOA positioning method and the two-dimensional TOA positioning method to estimate the target height, and gives the analysis of the GDOP positioning accuracy of the corresponding algorithm, and Through the simulation verification of a three-transmission single-receiving external radiation source positioning model, the effects of different algorithms on positioning accuracy and measurement-transmission station correlation are analysed. The results show that using the two-dimensional TOA positioning method to estimate the target height can improve the measurement-transmitting station correlation probability of the single-frequency off-line radiation source radar.
Lattice Vibration and Field Model for Phonons
Authors: Xm Z , Lü Jingjing , Wei Hongliang , Liang Wenhao 
Published: October 2020

Abstract
In this letter, we first briefly review Hamiltonian and Newtonian method for solving lattice vibration. Second, the equivalence between phonons and Klein-Gordon particles is proven. Finally, we use the new method to analyse some simple models and compute their phonon spectrum as well as Berry curvature.
Design and analysis of optical system of semi-active laser seeker
Authors: Pu Xiaoqin , Du Yawen , Dong Quanlin 
Published: October 2020

Abstract
The laser seeker is an important part of navigation guided weapons. The working principle of the laser seeker was expounded, and the optical system of the seeker was designed according to the system index requirements. Its optical system is mainly composed of a receiving optical lens combination and a four-quadrant detector. According to the system performance and technical indicators such as the detection distance of the seeker, the receiving clear aperture, and distortion, the laser imaging spot diameter and the center position range were simulated. The optical system model was established by using CODE-V software. And the spot quality was optimized and evaluated through distortion, trace map, and radial envelope energy curve. Finally, an optical system that satisfies the requirements is designed, and the spot imaging quality is great, and the angular tracking accuracy reaches 0.10° / s.
Design and application of mobile phone anti loss based on electronic information
Authors: Luo Jiachun , Yuan Ming , Chen Shen , Yong Sun , Chen Tianyu 
Published: October 2020

Abstract
With the continuous development of science and technology, artificial intelligence technology has gained a good opportunity. It has brought many conveniences to human production and life, and solved many problems that could not be solved before. How to apply electronic information technology has become the focus of attention. It can quickly solve different difficult problems in each link, improve work efficiency and design accuracy. And in the design process to improve and improve the actual design requirements at the same time to ensure the quality level. This paper designs a mobile phone anti loss device, which is mainly composed of STC89C52 minimum single chip system, Bluetooth module, power supply and anti-loss device. The anti-loss system of mobile phone needs a smart phone supporting Bluetooth to connect with the Bluetooth main board. The data between the single chip computer and Bluetooth is transmitted to the anti-loss device of mobile phone through the serial port. When the Bluetooth of the mobile phone is successfully connected to the Bluetooth motherboard, the anti-loss device shows that it is connected. When the distance between the mobile phone and the Bluetooth main board exceeds the safe distance, disconnect the connection and alarm the mobile phone and the Bluetooth main board at the same time.
A Multi-Parameter Fusion Turning Force Prediction Method Considering the Arc Radius of the Tool Tip
Authors: Gou Jianfeng , Zhang Guangpeng 
Published: October 2020

Abstract
According to the force analysis of turning, the principle of oblique cutting is applied. A new multi-parameter fusion turning force prediction method considering the radius of cutter tip arc is proposed. The mathematical model of new turning force prediction is established. The influence of cutting parameters, cutting parameters and machining conditions on the cutting force is considered in this method. By using the method of cutting force coefficient of the front cutting face, three cutting force coefficients on the front cutting face can be solved by one turning experiment, and the turning force prediction can be realized under the conditions of different cutting tool geometry parameters and different cutting parameters. Finally, the feasibility of the method is verified by TC4 turning test of titanium alloy. And it has high prediction accuracy.
Research on Ceramic Sanitary Ware Defect Detection Method Based on Improved VGG Network
Authors: Teng Bowen , Zhao Hongjian , Jia Pei , Yuan Junfeng , Tian Chenghua 
Published: October 2020

Abstract
The defect detection of ceramic sanitary ware is often done manually, which is inefficient and unhealthy. The development of deep learning technology makes a non-contact and high-efficient method of inspection possible. In this paper, based on VGG-16 network, we proposed an optimized method for ceramic sanitary ware defect detection. We carried out pre-processing to denoise and enhance the original image data, improved activation function of MReLU, and used transfer learning method to train the model. The results of the test on the ceramic sanitary ware defection data set showed that the accuracy can reach 97.48%, which is 6.46% higher than that of the model using the ReLU activation function. The detection speed can reach 7 fps, which could meet the requirements of industrial online real-time production.
Research on Detection and Fault Diagnosis Technology of Electric Vehicle Charging Facilities
Authors: Yong Xiao , Ji Wang 
Published: October 2020

Abstract
This paper uses waveform analysis method and data flow analysis method to study fault diagnosis and elimination. Based on the experimental results, the data flow analysis method and waveform analysis method of the vehicle were analyzed in depth. Apply fault diagnosis to find a fast fault diagnosis scheme to determine the hidden dangers of charging pile failure. The advantages and disadvantages of various fault diagnosis methods in maintenance practice are obtained.