bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Estimation Method of Accurate Adjustment of Spacecraft Instruments
Authors: Ruan Guowei , Long Changyu , Zhang Yuhang , Liu Xiao 
Published: April 2020

Abstract
Spacecraft instruments require to be assembled and adjustment precisely. In this essay, an estimation algorithm of precise assembly adjustment of Spacecraft instruments in the manufacturing field of satellite assembly. This algorithm, based on measurement data and measuring technology, transforms the estimation of unidirectional spacer adjustment into the form of coordinate system changing so as to realize precise adjustment of orientation of satellite instruments. The implementation method is as follows: According to the value of the actual measurement matrix and the design measurement matrix, the measured global coordinates and the designed global coordinates of each spacer are obtained to establish the spacer adjustment equation. Then, according to the number of the spacers, constraint equation of spacer plane is established to form over-determined set. Spacer adjustment value could be obtained by solving the over-determined set. In case it does not satisfy the standard, repeat the above procedure. This method is more applicable by transforming the adjustment process of the targeted spacer of satellite instrument into three-dimensional coordinate transformation. A three-dimensional coordinate transformation model of precise adjustment of Spacecraft instruments in complex state is established, which overcomes the problem of insufficient practicality of vector algorithm and improves the adjustment efficiency.
Research on Automatic Calibration and Correction Method of Intelligent Turbine Flowmeter
Authors: Zheng Wenlong , Yi Jianjun , Ma Yue , He Wang , Chen Bin , He Liang 
Published: April 2020

Abstract
In the process of industrial automation production and daily life, the flow is an important parameter that often needs to be measured and controlled. In order to ensure the accurate measurement of flow meter, the flowmeter needs to be calibrated before production, during use and after maintenance. However, most of the existing calibration methods are complicated in the calibration process, and there are many human interventions. The functions of the intelligent flowmeter are not fully utilized, and the unified management requirements for equipment during large-scale deployment cannot be met. This paper provides a method for automatic calibration of intelligent turbine flowmeter, which can be applied to a variety of intelligent instruments. In the calibration phase, the flowmeter automatically completes the calibration data collection at each calibration point set by the user. After all calibrations are completed, the calibration data will be stored in the flowmeter inside and it also will be uploaded to the host computer through the wireless network. At the same time, the configuration information can be received remotely. In the measurement phase, according to the internal calibration data and the K value fitting method selected by the user, the flowmeter can realize the non-linear correction of flow measurement and improve the accuracy of measurement results. User also can self-configure the instrument parameters. Compared with the existing calibration and correction methods of flowmeter, it simplifies the calibration process, has a high degree of automation, improves the accuracy of measurement results, and gives full play to the functions of intelligent instruments.
Visualization of Ship Collision Risk in the Inland Bridge Waterway Based on the Maritime Traffic Simulation
Authors: Xu Wuxiong , Sang Lingzhi 
Published: April 2020

Abstract
The collision risk is increasing in inland bridge waterways given that the restrictive waterway and many of obstructions. It is crucial for seafarers and supervisors to identify the high-risk areas in a bridge waterway. This paper takes the Wuhan Bridge Waterway in the Yangtze River as a case. In accordance with the maritime traffic simulation, the potential collision frequency and its distribution are obtained in order to evaluate the risk in different areas of the case waterway. The nautical routes with respect to the ships passing the waterway and ferryboats crossing over the waterway are then modeled. A collision detecting method is proposed to obtain the collision information extracted from the simulation data. This collision information is visualized in order to illustrate the collision risk in each area. The high risk sites can be illustrated by the proposed method in order to assist the maritime supervisors in paying pointed attentions to the identified sensitive areas.
Adsorptive and Photocatalytic Dye Removal from Wastewater Using Metal-Organic Frameworks
Authors: Wei Fuhua , Ren Qinhui , Yang Lili , Wu Liu , Jian Qianqian , Liang Zhao , Chen Ding 
Published: April 2020

Abstract
Trimesic acid in conjunction with microwave-assisted ball milling was used to produce Fe-based metal-organic frameworks (Fe-MOFs). Fe-MOFs were then used to eliminate organic dyes from aqueous solutions. Our results indicated Fe-MOFs eliminated nearly all Methylene Blue (MB) and Methyl Orange (MO). Within 120 min of Xe or natural light exposure, Fe-MOFs were able to remove 93.11% and 91.6%, respectively, of 10 mg/L MB in a 200 mL solution. Within 300 min of Xe or natural light exposure, Fe MOFs were able to remove 96.34% and 52.32%, respectively, of 5 mg/L MO from a 200 mL solution. Collectively, these results show that both dyes are suitable for use in the second kinetic model.
Analysis and Research on Vibration Severity of Planetary Shifting Mechanism
Authors: Li Shenlong , Zhang Qiang , Li Liang , Xing Qingku 
Published: April 2020

Abstract
The vibration severity indicates the severity of the vibration and is usually expressed by the maximum, average or root mean square value of the displacement, velocity and acceleration that characterize the vibration level. In this paper, based on the calculation of vibration severity, the arrangement of test measuring points, the selection of typical working conditions and the analysis of test results, the vibration severity of planet Shifting mechanism is tested and studied, and the rating is completed according to the relevant evaluation method of national standard, which provides support for the vibration analysis of transmission device and the research and development of planet transmission mechanism.
Analysis and Verification of the “Translation-Torsion” Model of Planetary Transmission Mechanism
Authors: Zhang Qiang , Li Shenlong , Zhang Yudong , Xing Qingkun 
Published: April 2020

Abstract
The planetary transmission mechanism is the core component for achieving the motility of high-speed tracked vehicles. The internal excitation results in severe vibration and low operating life of high-speed planetary transmission mechanism. However, due to the complex multiple planetary gear sets coupling, the mechanism of the internal excitation on the planetary gear is still unclear. In this paper, the “translation-torsion” coupling dynamic model of multi-set planetary transmission mechanism is established, and the influence of internal excitation on the vibration characteristics of the planetary transmission mechanism is analyzed. The dynamic model is verified by the DTE (dynamic transmission error) and the input-output transfer torque relationship. The results show that the meshing frequency of each planet gear set is consistent with the spectrogram, verifying the accuracy of the model, and studying the DTE and the input speed of the planetary transmission mechanism. The results show that when the planetary transmission mechanism is in the 2nd gear, when the input speed exceeds 1000 rpm, the fluctuation of the rotational speed has little effect on the DTE, and the fluctuation of the input torque has a linear growth trend on the DTE.
Evaluation of roadway water hazard level based on extension connetion cloud model
Authors: Song Jie , Liu Shang , Bi Yufeng , Wang Chao , Zhong Guoqiang 
Published: April 2020

Abstract
Accurately assessment of water hazard level in coal mine can improve the water hazard prevention and control in coal mine and reduce the occurrence of water inrush disaster. Based on the theoretical and practical study of coal mine water disaster accidents, a water disaster assessment index system was established. The transformation between qualitative and quantitative indicators was realized by the matter-element extension theory and the cloud model, the state value of the index and the corresponding risk grade membership value were determined by the connection cloud model, and the method of game theory was used to value the comprehensive weight of evaluation index to reduce the randomness and subjectivity in the determination of weight. Based on the principle of distance similarity, the evolution trend of risk can was estimated to strengthen the early warning of trend risk. The application in Feicheng mining area showed that the extension connection cloud model evaluation is appropriate to the evaluation of coal mine water hazard, and the quantitative characterization of water hazard risk is of great significance to guide coal production to be safe.
UAV Remote Sensing Method for Extracting Feature Points of Aerial Photos After Fast Geolocation
Authors: Wang Zhiwei , Zhang Wen , Zhong Li , Song Xuelian , Ruan Xirui 
Published: April 2020

Abstract
With the rapid development of 3S and drone technology, the size of existing aerial data is getting larger and larger. Therefore, there is an urgent need for a method for quickly geo-locating feature points of aerial photographs. This article aims at the above situation through the following 5 steps to achieve: modify the name of aerial photos, unified aerial photos in a separate folder, extract aerial photo center latitude and longitude information, match aerial photos to the location of longitude and latitude information and identify the type of feature and mark. Finally, it was found that after positioning using the above steps of this method, subsequent operations will save more than 70% of the time.
Design of the Suspended Cleaning equipment for Pigsties
Authors: Tao Jie , Shi Juncheng , Shao Jinfa 
Published: April 2020

Abstract
In view of the traditional pig captivity mode and the characteristics of the pigsty, this paper Analyzed the task of pigsty cleaning work, and designed a cleaning equipment with the suspension mechanism and the cleaning mechanism to meet the cleaning task, without changing the existing enclosure facilities. The rope transmission and the adsorption electromagnet are used to Switch cleaning steps.
The Development Status of Ningbo Zhoushan Port’s Logistics and Its Development Countermeasure
Authors: Huang Shiqi 
Published: April 2020

Abstract
The development level of port logistics partly reflects the comprehensive competitiveness of the port. Based on the latest development data of Ningbo Zhoushan port, combined with literature research, this paper analyses the development status of Ningbo Zhoushan port in terms of infrastructure construction, port collection and distribution network, information application, comprehensive logistics service scope and policy environment. In view of the limitation of developing port logistics in Ningbo Zhoushan port, this paper puts forward some countermeasures, such as optimizing the structure of port collection and distribution, speeding up the construction of port logistics information, optimizing the development system of port regional logistics, to furtherly improve the development level of port logistics in Ningbo Zhoushan port.
Vitalization of rural areas and environmental management
Authors: Tan Yong 
Published: April 2020

Abstract
The 19th National Congress of the Communist Party of China (CPC) innovatively put forward the rural revitalization strategy, which provided a new way of thinking for fundamentally solving the problems of “agriculture, rural areas and farmers”. Accelerating rural environmental management and building beautiful countryside is an important and key part of rural revitalization. In recent years, with the acceleration of industrialization and urbanization, the rural environment has deteriorated. It is urgent to correctly understand the current situation of rural environment, analyze the existing problems and find reasonable countermeasures.
Design and Implementation of PLC Traffic Signal Intelligent Control System
Authors: Gao Jianhua , Yang Yong , Zhong Xiaolei 
Published: April 2020

Abstract
Intelligent traffic signal system plays an indispensable role in the current intelligent system of urban transportation, and it plays a vital role in urban development and economic construction. PLC (Programmable Logic Controller) is a general-purpose industrial control device widely used in the design of automatic control systems for industrial automation and mechanical production. With its various functions, low price and easy to use, PLC has become more and more important in industrial production. This paper will design an intelligent traffic signal system based on PLC that can handle complex traffic conditions at intersections.
The Evolution and Thinking of Environmental Science in the Direction of Scientific History
Authors: Li Yuan 
Published: April 2020

Abstract
The education of scientific history can not only cultivate scientific spirit, critical spirit, innovative spirit and thinking method, but also cultivate sense of responsibility, compassion and initiative, and improve the understanding of non-logical thinking method and the feeling of aesthetic outlook on life. The education of scientific history of environmental science is an important channel to improve the comprehensive quality of students in the direction of environment. It is an important direction of the reform of environmental science education to raise awareness and carry out various forms of education activities of scientific history.
Research on Complex Electromagnetic Environment Simulation System
Authors: Bo XiangLei , Liu Fen 
Published: April 2020

Abstract
With the battlefield electromagnetic environment become more complex, these also weaken operational effectiveness of information technology equipment. Therefore, to seize the electromagnetic superiority become the key of the war in the information control and then take the initiative. In view of the complicated electromagnetic environment simulation, this paper studies the hardware and software of complex electromagnetic environment simulation system. The system has the function of electromagnetic signal parameters editor, multi-domain real-time monitoring function, parameter real-time control function, test evaluation function, the target database management function and system configuration function. To improve the ability of combat troops in complex electromagnetic environment is of great significance.
Components identification in some hospital wastewater during traditional treatment process
Authors: Zhang Jianlin , Zhuang Tao , Liu Shanjun , Gong Yanli 
Published: April 2020

Abstract
The trace medicine metabolites in some hospital wastewater during treatment process were determined and charactered by gas chromatography - mass spectrometry. Analysis results identified the present of various polycyclic and heterocyclic refractory compounds in the hospital wastewater. This study indicated the medicine metabolites could not be effectively removed by the traditional treatment process, and it was irradiative for the technology improvement in the wastewater treatment plants receiving hospital effluents.
Application of Green Building in Landscape Planning of Characteristic Towns
Authors: Luo Lintao , Fang Wei , Wang Xinya , Quan Ran 
Published: April 2020

Abstract
The positive significance of applying green buildings in town landscape planning and design to the development of small towns is discussed. Firstly, the overall classification and functions of small towns with Chinese characteristics are summarized, and the basic principles of its construction are clarified. Secondly, the related theories of green building are introduced, and the application characteristics and ways of green building in landscape design are expounded. It is found that the landscape design of characteristic towns should be based on the unique local ecological environment, material and facility conditions, and make a reasonable analysis from the perspective of topography and terrain, respect people’s experience and feelings, fully consider users’ physiological, psychological and emotional needs, and create a humanized landscape environment. In addition, people should not blindly pursue economic benefits. It is necessary to make use of recyclable building materials as far as possible on the basis of energy saving and environmental protection, so that economic development and ecological environment can coexist harmoniously.
Research on Optimization Configuration of Taxi Resources Based on Matching Model
Authors: Wang Nanxuan , Zhang Wentao , Weng Shuqing 
Published: April 2020

Abstract
“Difficulty in taxiing” has always been a concern of the society in recent years. This paper discusses the current situation of resource allocation of taxis and the impact of taxi company subsidy programs on the difficulty of taxiing, and then introduces a better subsidy program. We first collected data based on the Drip, fast intelligent travel platform, plotted the image, calculated the average of the taxi distribution and passenger demand at each time point, and carried out tracing and analysis. On this basis, the matching model is established: the idea of nearest neighbor” is introduced, and the time points that are difficult to get a taxi are concentrated at 8-10 am, 16 pm, and 19 pm. Then analyze the subsidy program data, taxi drivers and passengers after using the taxi software, taxi vacancy rate, passenger waiting time and changes in the economic benefits of taxi drivers and passengers, etc., after analysis, we found the existence of subsidy programs can fully mobilize the enthusiasm of drivers and passengers to use the software, so that the number of people using the software continues to increase, which not only shortens the waiting time for passengers to take a taxi, but also reduces the driver’s vacancy rate, so it can effectively alleviate the problem of difficult driving.
Design and Simulation of A Dual-Frequency Multi-Mode Vortex Microstrip Array Antenna
Authors: Mao Pengrong , Gao Canguan 
Published: April 2020

Abstract
In order to improve the communication capacity and spectrum utilization, a design scheme of dual-frequency and multi-mode vortex microstrip array antenna is proposed. This antenna is composed of 8 rectangular microstrip patches, and 8 elements with the same structure are distributed at equal intervals on a concentric circle. The optimal structure of the antenna is determined by modeling 3D electromagnetic field simulation software and optimizing patch size. Simulation results show that the antenna has good impedance matching at the resonance point of 1.9 GHz and 2.45 GHz. When different phase excitation is applied to each element, the antenna produces seven effective vortex electromagnetic waves with different modes.
Development of Flowmeter with IoT Function
Authors: He Wang , Yi Jianjun , Ma Yue , Zhang Wenlong , Chen Shidong , Min Jinyang , Yan Sunchao , Chen Bin , He Liang 
Published: April 2020

Abstract
Turbine flowmeters are now widely used as sensors in existing flow monitoring scenarios, but their traditional induction coils are susceptible to electromagnetic interference. The process of configuring, calibrating, etc. is complicated. And the interface of existing flowmeter is relatively single. Regarding these issues above, this paper develops a new type of turbine flowmeter with Internet functions replaces the traditional induction coil with AMR components, designs its preamplifier module, develops the microprocessor software functions for the secondary instrument, integrates a variety of industrial wired/wireless flexible communication interfaces in the flowmeter secondary instrument, and uses ZigBee technology to perform node networking, ID setting and routing to construct the IoT architecture of flowmeter. This intelligent flowmeter sensor can be applied to the fields of chemical industry, metallurgy and so on, which can greatly help solve the problems of current flowmeter configuration and network access difficulties, meeting the urgent needs of intelligent manufacturing.
Research and application of Netty based condition monitoring system for forage harvesting machine
Authors: Han Shaoyun , Pang Zaixi , Wang Lili , Wang Fengzhu , Li Yashuo , Mao Wenhua 
Published: April 2020

Abstract
In order to realize intelligent monitoring of main components of forage harvesting machine, an intelligent remote monitoring system based on CAN bus technology, Socket communication protocol based on Netty framework and cloud server was designed to solve the problem of low level of informatization of forage harvesting machine in China. system includes data acquisition system, data wireless transmission module and cloud data storage and analysis and processing system, realizing the data synchronization and sharing of working condition information of forage harvesting machine at local, cloud and mobile terminals. We developed the on-board terminal system based on Labview platform, and the web server based on SpringBoot framework. The parameters obtained by the sensor mainly include vehicle position information, engine speed and torque, shredding roller, grain crushing roller, cutting table, feeding, throwing, motor and other core components. Field experiments for 15 consecutive days show that: cloud server system with custom Socket communication protocol receives and stores terminal data in real time; The monitoring platform can realize the functions of data display and curve display of working condition information, data analysis and intelligent information reminder. By analyzing the data curve of the main components, the stability and reliability of the system are verified, which is of great significance to the informationization and intelligent development of the machinery and equipment of the forage harvesting machine.
A Push Model of Advertisement Classification Matching Based on Machine Learning
Authors: Sun Yan , Wu Qian , Li Wendi 
Published: April 2020

Abstract
With the leap-forward development of Internet technology, it is more effective for marketing to meet personalized needs based on massive data. In this paper, through the screening of advertisements and user feature vectors, combining factor decomposition machine and neural network, a multi-label model is built, and through training data, a static “advertisement-user” classification matching push model is obtained. On the basis of the static model, three sub-models are respectively established for comprehensive evaluation to realize the “user-advertisement” household matching push. At the same time, the recommendation model is updated in real time to establish the “channel user-video advertisement” classification matching push update model, and the static model is dynamic to build the classification matching push model. Combined with data set verification, it is concluded that the model is true and effective and can realize personalized recommendation.