bluuebunny/crossref_metadata_2025_split huggingface dataset:
The design and implementation of book lending system based on RFID technology
Authors: Sunmin  
Published: December 2020

Abstract
With the continuous enrichment of library collection resources and the expansion of service connotation and extension, the traditional integrated management system based on paper resources management can no longer meet the needs of the library’s continuous development. Therefore, the research and development of a new generation of library management system urgently needs to be put on the agenda. the library management and lending system have been already reformed. Finding the relevant literature, comparing and analyzing the previous research results. This paper introduce the design and implementation of RFID technology, including the advantages of the library lending system which established by RFID technology, and at the same time it puts forward the deficiency and the application prospect of the future RFID technology.
Design and modeling of satellite network structure for business scenarios
Authors: Ren Lintao , Pei Zhongmin , Xiong Wei , Luo Zhangkai 
Published: December 2020

Abstract
In view of the actual decentralized development of the satellite service constellation and the trend of space-ground integrated information network, based on the idea of clustering, methodology of complex network community structure, a business scenario-oriented satellite network structure is designed. On the one hand, it reflects the different separation and integration of satellite constellations in business scenarios. On the other hand, the “head node” mechanism is introduced to be responsible for the interaction between constellation in different business scenarios. The satellite network structure is modeled using the growth and priority connection mechanism, and through computational derivation and simulation validation, the scale-free characteristics of the satellite network are revealed. Finally, through the simulation experiments on different satellite network parameters, the effect of different parameters on the static geometry, network efficiency, etc., are obtained. The influence of the law of the network will provide theoretical and methodological reference for the design of satellite network structure.
Design and Implementation of Cloud Platform Knowledge Service Mode for High-end Equipment Manufacturing
Authors: Li Shuang , Wang Jian 
Published: December 2020

Abstract
With the advancement of intelligent high-end equipment manufacturing, knowledge in the field of high-end equipment manufacturing provides decision support and knowledge innovation services for all aspects of the product life cycle, and plays an increasingly important role in design and production. However, the multi-source, heterogeneous and fragmented nature of domain knowledge brings difficulties to the organization and management of knowledge. To solve this problem, this paper proposes a cloud platform knowledge service mode for high-end equipment manufacturing throughout the product life cycle, including three-dimensional knowledge classification standard, ontology-based knowledge representation and integration, knowledge sharing through knowledge navigation, knowledge retrieval and knowledge reasoning. The application of aerospace manufacturing related fields shows that this mode can provide effective knowledge support for the product life cycle, strengthen the production collaboration between upstream and downstream enterprises in high-end equipment manufacturing, and provide a comprehensive guarantee for the aeroengine manufacturing industry chain.
Construction of College Student Credit Information System Based on Blockchain Technology
Authors: Xidong Liu , Yuxin Shang , Chuanling Song 
Published: December 2020

Abstract
In recent years, falsification of learning experience, academic fraud and other academic misconduct are common among college students. However, the data collection and query functions of various management systems used in domestic colleges and universities are relatively single, which is not enough to meet the needs of the society. With the application of blockchain technology in all walks of life, the decentralization, security, credibility and traceability of blockchain technology are highly matched with the construction of College Students’ integrity system. The research and development of College Students’ credit information system based on blockchain can effectively improve the credibility of the education system, and play a powerful role in promoting the application of education big data and innovation breakthrough.
Remote Sensing Image Scene Classification along the High-speed Railway based on Convolutional Neural Network
Authors: Gong Xunqiang , Ju Xiayi , Qian Kuan , Lu Tieding , Chen Zhiping 
Published: December 2020

Abstract
China’s high-speed railway operation network is huge, and the environment along the line is complex. Therefore, there are many security risks. For that reason, real-time dynamic monitoring of hidden dangers along the high-speed railway is required. Traditional manual field monitoring methods are inefficient, while remote sensing technology can provide a means for dynamic monitoring because of its large-scale, real-time and cyclical aspects. In addition, feature extraction of classification model is simple and classification accuracy is not ideal by using traditional scene classification methods. In order to effectively avoid potential safety hazards along the high-speed railway, in other words, to classify the ground objects along the high-speed railway more accurately, the remote sensing images along the high-speed railway obtained from Google Earth are taken as the research object, and three convolutional neural network (CNN) models for scene classification are constructed and their classification results are compared in this paper. The experimental results show that the classification accuracy of the three models is above 89%, and the results of the ResNet model are optimal.
Active learning for image preparation of automatic vending machine (AVM) employing transfer learning method
Authors: Li Fang , Zeng Min , Xiao Jia , Li Xiaojun , Li Yuanyuan , Hu Guosheng 
Published: December 2020

Abstract
In this paper, we employed active learning methods to prepare annotated images for our training of automatic vending machine (AVM) system, in order to minimize human annotation cost. Due to the tiny data of our system, transfer learning approach is used by implementing the already trained Yolov3-tiny model for COCO dataset as our training start. Also, we evaluated the effectiveness of 3 annotation strategies: smallest annotation area (SAA), largest annotation area (LAA) and moderate annotation area (MAA), for photos of top views from above. The results show that the idea of employing active learning methods to prepare annotated data is feasible. Also, the annotation strategy of MAA demonstrates the superior performance, for its enough object area and the least background area.
Research on the application of face recognition system
Authors: Mingtsung Chen , Wei Qian , Jiaqi He , zhuomin Zhao 
Published: December 2020

ABSTRACT
For the unrestricted investment of face recognition technology, whether it is to protect the safety of people’s life and property or to infringe on people’s basic rights. Face recognition is the most typical one of pattern recognition. It extracts the feature information of face in different ways, compares or tests the collected information with the original information, to realise the record verification of identity or the tracking and positioning of personnel. Nowadays, face recognition technology has been widely used in everyone’s daily life. On the one hand, it brings great convenience to life, on the other hand, whether personal information security and privacy can be guaranteed. Everything has two sides, and face recognition technology is no exception. How to balance the advantages and disadvantages of privacy and security still needs to be further explored.
Design of Nursing Bed Control System Based on STM32
Authors: Zhang Huimin , Sun Hongmin , Zhang Xianda , Guo Xingzhao 
Published: December 2020

Abstract
In order to solve the problems of low intelligence, lack of function in the domestic nursing beds, a multifunctional intelligent nursing bed for daily care in homes and nursing homes was designed. The control system adopts STM32 series chips as the control core, uses PWM modulation to simultaneously control the working state of multiple linear drivers and solenoid valves to achieve posture adjustment. The closed-loop control of the working status of the air circuit and water circuit hardware through the pressure sensor and PID adjustment algorithm realizes the function of sewage treatment. Improve the intelligence of nursing bed through the design of voice recognition and remote communication module. The application of the control system improves the convenience of operation, control intelligence and safety and reliability of nursing bed equipment.
Research on the sterilization effect of hydrogen peroxide and equipment optimizatio
Authors: Zhang Huimin , Zhang Xianda , Sun Hongmin 
Published: December 2020

Abstract
Hydrogen peroxide sterilization is widely used in food packaging, public health and other fields. The sterilization effect is related to the vaporization spray time and nozzle parameters. This paper uses AnsysFluent software to mathematically simulate the flow field and concentration distribution of vaporized hydrogen peroxide in the sterilization space; and verify the correctness of the numerical simulation results through field experiments. UDF module is used to describe the component concentration of the nozzle, and the distribution of vaporized hydrogen peroxide is analyzed by changing the nozzle spray angle and spray speed of the equipment, and the spray time T required to reach the standard concentration in the sterilization space is the shortest and the hydrogen peroxide dosage Q is the minimum For the goal, optimize the design parameters. The results show that when the spray speed is 4.8m/s and the spray angle is -18°, the spray time required to reach the sterilization standard is the shortest, and the amount of hydrogen peroxide is the least. This article provides a theoretical basis for the improvement of vaporized hydrogen peroxide sterilization equipment.
Function Analysis of Command and Control System in Intelligent War
Authors: Chen Huangqing , Li Tingquan , Zhu Lili , Jiang Taotao 
Published: December 2020

Abstract
With the in-depth application of artificial intelligence and other new technologies in the military field, intelligent war has gradually emerged and shown a strong combat effectiveness. First of all, the main combat forces and functional modules of intelligent war are analyzed to grasp the characteristics of “autonomy” and “integration of cross domain operation and control” in intelligent war. Then the main functions of command and control system in intelligent war are analyzed and elaborated, focusing on the functions with human participation, the main contents of each function are stated in detail. Through the analysis of system functions, it can provide high reference value for the design and construction of intelligent command and control system in the future.
Research on Fault Diagnosis Model of Transmission Line under Lightning Stroke Based on Neural Network
Authors: ShaoJie Qu , ZhiGang Wang , YongChao Song 
Published: December 2020

Abstract
Transmission lines are an important part of the power system. In recent years, there have been more and more lightning trips, power outages and outages, which have become one of the hazards that threaten the stable operation of the power grid, and seriously endanger the reliability of the power grid operation. It is necessary to diagnose problems with transmission line faults. In this paper, after the information generated by the fault is processed by wavelet, it is input into the neural network fault diagnosis model as the input part, and the fault type of the transmission line is predicted and identified by the neural network operation, and the experiment is carried out through MATLAB simulation software. The prediction results show that the model is more accurate in fault diagnosis of transmission lines.
Analysis of the energetic and exergetic performance in condensers of thermal generation plant
Authors: Orjuela Abril M S , Rojas Suárez J P , Pabón León J A 
Published: December 2020

Abstract
In the present study, the influence of the flow parameters of the cooling water on the operating conditions of the condenser is evaluated. The above, by simulating codes that represent the thermal behavior of the equipment. The study focuses on the influence of the temperature and the flow rate of the cooling water on the pressure, heat transfer coefficient, and exergy efficiency of the condenser. Additionally, mathematical correlations are made between these operating variables. The study shows that the flow of cooling water causes a reduction in the condenser pressure. However, it does improve its heat transfer capacity. On the other hand, a 2 °C increase in temperature produces a 6% increase in condenser pressure. Pressure levels above 8.5 kPa cause a considerable reduction in the energy and exergetic efficiency of the condenser. Similarly, the exergetic efficiency of the condenser is also affected by heat losses to the environment. Additionally, the increase in temperature allows the condenser to operate at a higher exergy efficiency. Finally, the development of the correlations carried out can become a tool for evaluating the performance of the condenser under different operating conditions.
Changes to anthropogenic pressures on reach-scale rivers in South and Southeast Asia from 1990 to 2014
Authors: Liu Chang , Yang Kang , Bennett Mia M , Lu Xin , Guo Ziyan , Li Manchun 
Published: December 2020

Abstract
Rivers are essential to human livelihoods and agricultural production, yet human usage and irrigation are jeopardizing river sustainability. It is thus crucial to investigate the fine-scaled spatiotemporal dynamics of anthropogenic pressures on rivers. Most research, however, is conducted at the grid-scale, which impedes detailed investigations. In this study, by tracking anthropogenic pressures at the scale of river reaches (the length of river between river confluences) in South and Southeast Asia from 1990 to 2014, we provide new insights into anthropogenic pressures on river reaches using a simple and straightforward approach. We selected human usage (represented by built-up area) and irrigation (represented by irrigated area) as two fundamental indicators of anthropogenic pressure. We divided the study area into 5 × 5 km grids and calculated anthropogenic pressures on each grid to its nearest river reach. Pressures were calculated as the ratio of built-up and irrigated area to the distance between grids and reaches. Groundwater was also included to adjust for additional irrigation-induced pressures on reaches. Anthropogenic pressures on each reach were then calculated by summing pressures from the two indicators of all grids attached to it. Results indicate that >50% of reaches are affected by anthropogenic activities and that average pressures increase by ∼15% from 1990 to 2014, with hotspots concentrated in eastern Pakistan and northern India. Irrigation is the dominant pressure on ∼33% of reaches, while human usage is dominant for ∼24% of reaches. Anthropogenic pressures within transboundary river basins vary longitudinally, increasing as distance from the ocean declines. Pressures also vary significantly with reach size. Although large rivers suffer from greater anthropogenic pressures, they are rising more rapidly for small rivers. Empirically, this study reveals the increasing and heterogeneous nature of anthropogenic pressures on river reaches in South and Southeast Asia. Methodologically, it suggests that reach-scale river sustainability assessment can serve as a promising approach for researching and managing regional and transboundary rivers.
Investigation of processes occurring above laser exposed area during powder bed fusion by optical diagnostics
Authors: Podrabinnik P A , Khmyrov R S , Korotkov A D , Shtanko A E , Gusarov A V 
Published: December 2020

Abstract
Powder-bed fusion is accompanied by the occurrence of processes such as the formation of a vapor-gas jet, the outflow of powder particles and the movement of gas masses in the laser processing zone, which must be taken into account to improve the quality of the process. In this work, the methods of optical diagnostics of the space above the processing zone were used to identify and investigate the main occurring processes. Using the Schlieren-method, it was possible to fix the emission of powder particles from the laser exposure zone and evaluate their speed and expansion angle depending on the laser processing parameters, type of material, and particle size distribution. To study the emerging vapor-gas flows, the interferometry method was used, as a result of which a spatial change in the refractive index of the gas medium was recorded. Based on the data obtained, the velocity of the jet was calculated and the flow geometry was determined. It is also shown that metal vapor makes up the majority of the observed flows.
Modeling of an equal-wear shape of grinding wheel when working with longitudinal feed
Authors: Salova D P , Nosov N V , Salov P M 
Published: December 2020

Abstract
The paper proposes a model of an equal-wear shape of the working surface of grinding wheels operating in the self-sharpening mode, where the principles of system workability are used. It is established that to obtain engineering solutions, the wheel should be considered as a ceramic body that cuts into the ‘Voicht medium’. A disadvantage of the adopted model is that it does not consider the lag caused by strain. In addition, when grinding, the process temperature and the deformation rate are significantly higher than when the machine parts rub together. It is shown that the condition of equal wear of the wheel surface is provided by equal wear of the abrasive grains on the entire working surface, the density of the working grains on the elementary section of the contact surface. The paper presents conditions under which equal-wear shapes of wheels working with a longitudinal feed are provided.
Combined multi-electrode piercing of holes in hard-to-process materials
Authors: Smolentsev V , Kirillov O , Kotukov Y 
Published: December 2020

Abstract
The possibilities of combined piercing through and “blind” holes in hard-to-process materials are considered. The possibilities of intensifying the processing process by using multi-electrode tools are presented. A fundamentally new element of the new technology is the creation and use of a new working environment based on a rheological fluid with variable viscosity. This determines the conditions for mass removal of processing products from the hole forming site and creates conditions for process stabilization. The method is protected by a Russian patent and has been used in many factories countries. The article considers the technology of processing parts in the proposed working environment, which implements the proposed method in the form of a technological process in the manufacture of parts with holes of different cross-sections. At the same time, the use of combined multi-electrode cross-linking allowed up to 3 times to speed up the production of channels for cooling parts of the hot zone of thermal machines, and to achieve stability of cross-section sizes within ±5%. This technology expands the use of electrical processing methods in General and special engineering in the manufacture of parts from hard-to-process alloys.
Manual measurements of cutting tools on a coordinate measuring machine
Authors: Nikitina I P , Kamenev C V , Polyakov A N 
Published: December 2020

Abstract
Coordinate measuring machines make it possible to measure the geometric parameters of precision parts, the measuring of which is not feasible with a universal hand tool. The purpose of the study was to develop a methodology for measuring the design and geometric parameters of a straight bull-nose turning tool. To test the effectiveness of the developed methodology for measuring the design and geometric parameters of the cutting tool, a full-scale experiment was conducted. During the experiment, the measurement of all the structural and geometric parameters of the cutting was carried out using hand-held measuring tools and the Wenzel XOrbit 55 coordinate measuring machine. A comparative analysis of the results of the measurements showed the folowing: all the geometric parameters of the cutting can only be measured using a coordinate measuring machine; geometric parameters measurements using a universal hand tool do not allow you to make unambiguous organizational decisions on the further operation of the cutting tool, since the measurement error is comparable to the current size tolerances, however, for such design parameters as length, height, and width of the cutting, due to the large tolerances, it is sufficient to use a universal hand measuring tool. The measurement practice using a coordinate measuring machine has shown that when performing critical measurements, the use of coordinate measuring machines, in manual mode, is not only accurate, but also more productive in comparison with a universal hand measuring tools.
Analysis and synthesis of ecological installations for recycling waste polyurethane foams
Authors: Rakov D L 
Published: December 2020

Abstract
Recycling and utilization of polymer materials is one of the most urgent tasks for modern science and technology. The polymeric materials polyurethanes (PUs) play a big role in different applications. The morphological approach is used as a way of designing, thinking, finding solutions and variants for the polyurethanes recycling technology. This method use as a part of the design process, especially in the conceptual design stage. This approach allows to search for innovative engineering solutions and choose the rational variants and compare them. This paper presents and discusses an morphological approach for solving the polyurethanes recycling problems.
The synthesis of Li2ZnTi3O8 and Li2Zn3Ti4O12 powders for Low Temperature Cofired Ceramic (LTCC) production
Authors: Vershinin D I , Khusainov I N , Makarov N A 
Published: December 2020

Abstract
The powders of different phase compositions in the Li2O-ZnO-TiO2 system were prepared. These powders can be used as major components in microelectronic devices production using Low Temperature Cofired Ceramic (LTCC) technology. The influence of factors such as the synthesis temperature and holding time on phase transformations processes and composition of synthesized powders were studied. It was determined that the synthesis of Li2ZnTi3O8 and Li2Zn3Ti4O12 compounds can be carried out at 850-900 °C. At the same time, the synthesized phases are extremely sensitive to the ratio of the initial components.
Effect of the Step in the Blow Channel of a Blast Furnace Tuyere on Improving Natural Gas Combustion
Authors: Sayfullayev S D , Efremov D B , Tarasov Yu S 
Published: December 2020

Abstract
The paper demonstrates the effect of the step in the blow channel and the insulating lining on the intensity of mixing natural gas with the air blast and its combustion in the blow channel, as well as on the increase in the air blast temperature at the tuyere outlet. This allows to increase natural gas consumption and reduce coke consumption.