bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comment on Security and Improvement of Partial Blind Signature Scheme and Revocable Certificateless Signature Scheme
Authors: Hu Xiaoming , Chen Fangshu , Ma Chuang , Tan Wenan 
Published: March 2021

Abstract
Partial blind signature scheme (BLD-SS) can protect the specific content of the signed message by adding factor to blind the signed message and can also prevent the misuse of the signature by adding common information negotiated in advance. Revocable certificateless signature scheme (RCSS) can prevent the user’s privacy from leaking by adding time key in the signature process and signature verification process. BLD-SS and RCSS both have wide applications in electronic-voting, electronic-cash system and other fields. In this paper, it presents a security analysis on a partial blind signature scheme and a revocable signature scheme proposed recently. It points out that the BLD-SS does not satisfy the unforgeability. A malicious user can forge a partial blind signature on any message and any common information without known from PKG (Private Key Generation). It also shows that the RCSS does not satisfy the unforgeability. A malicious enemy can forge a signature on any message and on any user. The PKG also cannot update the time key immediately when a user’s key is leaked or his identity is expired. In order to overcome these problems, it proposes some simple improvement methods which are almost the same efficiency with the original signature scheme.
Research on Industry Question Answering System Based on Near Neighbor Vector Search
Authors: Gao Ming , Wu Heng , Hua Huangsheng , Zhang Wenfei , Chen Zhuozhuo , Wang Dehui 
Published: March 2021

Abstract
In the field of natural language processing, language-based question answering has been widely studied and made great achievements. As an important form of search engine, question answering system can further improve the search quality compared with traditional search engines. Traditional tree-based indexing methods are inefficient in high-dimensional space. This paper focuses on the application of k nearest neighbor search in large-scale image databases, and researches on high-dimensional indexing technology based on vector approximation method. Fast-Hessian detector is used to detect feature points and generate SURF feature description vector; Then, the initial matching point pair is obtained by fast approximate nearest neighbor search algorithm, and then the unidirectional matching results are matched bidirectionally; at the same time, it makes a detailed analysis of the situation that the events in the sentences are verbs of “abstract change”, so as to realize the automatic question and answer after the change of abstract relations between entities.
Research on Scene Fusion and Interaction Method Based on Virtual Reality Technology
Authors: Liu Jintao , Chen Yanlin 
Published: March 2021

Abstract
The construction of a virtual interactive model based on VR technology breaks through the single mode of traditional virtual reality helmets, through optical attitude sensing, immersive cave virtual reality, multi-person network collaboration, 9D interactive media applications, and mobile terminal interaction. The organic integration and application of technologies have improved the user’s interactive experience, and the inheritance and development of local folk culture and the continuous research on intangible cultural heritage can be a useful exploration. However, the development cost of the entire design is relatively high, and there is no unified construction standard and policy support for such projects in China, especially the lack of effective support from the network application platform, which makes it difficult to implement online, and the reproducibility is low.
Design of a multi-channel micro-capacitor acquisition system
Authors: Wu Yun , Ding Yunguang , Jia Yunfei , Liao Yucheng 
Published: March 2021

Abstract
Aiming at the measurement method of electrical capacitance tomography, a set of micro-capacitance acquisition system for planar array capacitance sensor is designed. Using the circuit principle design of high sensitivity and anti-interference, a dual-channel signal generator with adjustable amplitude and phase was designed to excite the capacitance sensor. The core capacitance voltage conversion circuit of the acquisition system adopts an AC excitation type conversion circuit with the ability to resist stray capacitance interference, and analyzes the error influencing factors in combination with the actual circuit components. The array control switch group is designed for multi-channel switching acquisition, and optimized in conjunction with the capacitor voltage conversion circuit. For the phase demodulation method, an orthogonal optimization method based on hardware multiplier is proposed. A micro-capacitor experiment is designed to calibrate the acquisition circuit. The experimental results show that the capacitance acquisition resolution of the micro-capacitor acquisition system within the acquisition range is 2.84fF, the linearity is 0.9998, and the acquisition error is less than 0.12fF.
Human eye-fixation prediction based on Convolutional Neural Network in RGB images
Authors: yue Miao , Wei Li , chunle Li 
Published: March 2021

Abstract
Using neural networks to simulate and predict human visual attention mechanism is a hot topic in the field of computer vision. In this paper, we propose an end-to-end encoder-decoder network architecture to predict the fixation mechanism of human eyes, which consists of modules composed of multiple convolutional layers with different expansion rates to capture multi-scale features in parallel. In addition, the attention module is added on the basis of the encoder network structure, and a self-attention mechanism is introduced to capture the visual feature dependency in the channel size, and the semantic interdependence in the channel dimension is modeled to predict the visual salience more accurately. In this paper, five data sets and selected examples are used to demonstrate the effectiveness of the proposed method. Our method achieves competitive and consistent results on multiple evaluation indicators on MIT1003 and CAT2000 datasets.
Design of a new voltage reference source
Authors: Li Xiaojiang , Huang Qunfeng 
Published: March 2021

Abstract
Current reference is a very important module in analog circuits. The main purpose of this design is to provide a stable reference voltage for a switch magnetism-sensing circuit. Because of the inherent characteristics of the circuit, the reference voltage is set to 3.3V. In this paper, the reference voltage source is designed to have a wide input range, a stable output and a good temperature characteristic. In this paper, the simulation results of the reference voltage and the complete design layout are described, and a current reference is achieved, which is independent of process, voltage and temperature, with little area increases only. The simulation results based on a 4 μm 25 V bipolar process verify the correctness of the theoretical analysis and the feasibility of the proposed methods.
Application Analysis of Electronic Information Technology in the Internet of Things
Authors: Xia Xianyu 
Published: March 2021

Abstract
Under the premise of technological progress, people’s thinking is constantly changing, and people have certain demands for new technologies. At present, people particularly favor information technology, which has changed people’s lifestyles. Especially after the emergence of the Internet of Things, a novel environment has been created for people’s living habits and enterprise production, and the distance between people can be effectively shortened. It can greatly improve the efficiency of life, highlighting the convenience. In the new era, the Internet of Things and electronic information technology are combined, and the two work together to help various industries move forward. It has targeted integration in multiple aspects such as QR code, intelligent transportation and electronic ordering, so that the Internet of Things brings forward action full of the times to the society, demonstrating its unique and effective use.
Research and Implementation of Multi-modal Video Retrieval System Based on Deep Learning
Authors: Bing Qi 
Published: March 2021

Abstract
At present, keyword-based video retrieval is gradually difficult to adapt to the needs of the rapid development of the Internet due to its strong subjectivity and huge workload. As a result, multi-modal video retrieval based on deep learning has appeared. This retrieval method can conduct video retrieval through multiple methods such as text, image, and video, which fully meets the different retrieval needs of different users, and significantly improves the accuracy and effectiveness of video retrieval. Based on this, this article discusses in detail the design of a multi-modal video retrieval system based on deep learning, analyzes and designs each functional module of the system to provide reference for future related work.
Research on the Demand of Broadband Wireless Mobile Applications Based on User Behavior
Authors: Zhang Qizeng , Zhao Biao , She Lei 
Published: March 2021

Abstract
Based on the different behaviors of multi-user group, this paper gives a method of demand analysis of broadband wireless mobile application. The analysis of broadband wireless mobile application, based on user behavior samples, can adopt the method of fuzzy cluster analysis to classify the user behavior by setting different clustering level, and build the model of each type of user behavior. The function of broadband wireless mobile application is designed by using the function description template based on class diagram, and the relationship between its function and user group behavior is analyzed by mapping matrix. At last, based on the application function and user behavior correlation analysis, the user behaviors are transformed into the key indicators and requirements of the application function.
A Novel All Digital Transmitter With Three-level Quadrature Differential RF-PWM
Authors: Lei Zhu , Qiang Zhou , Zhihu Wei , Zhang Chen , Jibo Wei , Jianbin Chen , Zhiyuan Zhao 
Published: March 2021

Abstract
To solve spectral aliasing of digital pulse width modulation (PWM) signal during digital up-conversion, a novel all-digital transmitter architecture using three-level quadrature differential RF-PWM is presented. By using triangle wave with 90° phase shift as the reference signal of quadrature differential PWM, the pulse coding of complex modulation signal and digital up-conversion will be realized. The feasibility of the transmitter is demonstrated by deriving the output formula of 3-level quadrature differential PWM, the design requirement is also given. Simulation and experiment results with QPSK and 16QAM signals show that the proposed scheme can significantly suppress the transmitter in-band noise, eliminate even harmonics, and effectively reduce the system operating frequency.
Evolutionary game of cooperative decision-making in reverse supply chain based on cooperative effort
Authors: Lin Ni , Yuli Xiong 
Published: March 2021

Abstract
Aiming at a large number of end-of-life (EOF) electrical products flowing into individual recycling outlets, it will squeeze the living space of formal dismantling companies and cause secondary pollution problems. The purpose of this paper is to establish a stable cooperative relationship between them to guide EOF products flowing from individual recycling outlets into the formal dismantling process. A game model involving the participation of formal dismantling enterprises and individual recycling outlets is constructed, and the role of government punishment mechanism intervention in the formation of active cooperative relations between participants in different parameter ranges is discussed. Then, the stability of the evolutionary equilibrium point is analysed. Finally, the Matlab software is used to simulate the influence of parameter on the formation of a stable cooperative relationship, and suggestions for promoting cooperation are provided.
A Simulation Platform for Airport Runway Collision Warning System
Authors: Liao Kai , Zhao Yi , Zhang Xinai 
Published: March 2021

Abstract
The increasing passenger throughput makes the large-scale aviation hub being unable to bear the burden gradually. Flight delays caused by cannot fly through the ATC tower in time are becoming more and more common, which makes airlines have to face the problem of passenger loss. Meanwhile, runway intrusion incidents caused by the high load operation of the airport also occur frequently. Once there is a collision, airlines will suffer huge economic losses. In order to avoid runway intrusion, improve air transport efficiency and reduce airline losses, runway collision avoidance system emerges as the times require. Based on the real airport map geographic coordinate data, this paper draws the airport dynamic map in the on-board moving map for the pilot, defines several kinds of runway intrusion scenarios, and introduces 3D real-time visual display into the platform in order to build a complete set of simulation verification platform for airport runway collision avoidance system. The research results of this paper can be used to verify the optimization algorithm of runway collision avoidance system and the test of airport dynamic map in the future, which is of great significance to improve the traffic condition of large airports in the future.
Demand-side response Resource Value Evaluation Method based on Entropy-weighted Close Value Method
Authors: Liang Kai , Liu Yu , He Huan , Du Liang , Ning Liaoyi , Jiao Zhen , Sun Xinyu 
Published: March 2021

Abstract
The main benefits and social welfare of demand response resources participating in the market are mostly based on qualitative evaluation in previous studies, and no more mature evaluation methods have been seen. This paper uses the evaluation model of the entropy-weighted close value method to analyze the advantages and disadvantages of the evaluation units. Advantages, the standard of each evaluation index is used as the sample to participate in the composition of the original environmental matrix, the entropy weight method is used to determine the weight of each evaluation index, the “most advantages” and “the worst points” are determined in a limited sample, and the sum of each sample point is calculated. The Euclidean distance between the above two points is used to determine the close value of the sample point, determine the order of the merits of each evaluation unit according to the close value, and finally determine the optimal solution for the demand side response.
Research on Systematic Construction of Organizational Project Management (OPM) for Large Business
Authors: Xie Wenjia , Liu Xiangyang , Zhang Shuai 
Published: March 2021

Abstract
This article reshapes the construction elements of Organizational Project Management (OPM) from the aspects of OPM governance, OPM methodology, knowledge management, talent management, etc. It establishes three main lines of strategy implementation, end-to-end process and revenue orientation, as well as clarifying the hierarchical division of the project and improving the information management mechanism, etc. Finally, it provides thoughts and suggestions for the construction of the OPM system of medium and large enterprises.
A Comparative Study on the Safety Management System Standards for Chinese Power Enterprises
Authors: Jiang Feng , Guo Chenggong , Li Ying , Chen Tao 
Published: March 2021

Abstract
The safety management system standards are the basic document for enterprises to carry out safe production activities. This paper uses the methods of literature research and comparative analysis to sort out the safety standardization requirements of China’s power companies. The development history of China’s power safety management system standards is summarized. Through comparative research on the safety management system standards of three Chinese power enterprises, the concepts and methods of safety management of Chinese power companies was summed up, as well as the element settings and key features. The results show that the safety management system standards of Chinese power enterprises are mostly guided by risk management concepts to develop modular systems, and provides some guidance and suggestions for the preparation of safety management system standards for other Chinese power enterprises.
Experimental investigation on fatigue crack growth of directional solidified superalloy with single hole
Authors: Liu Shuangbo , Hu Weibing 
Published: March 2021

Abstract
In order to study the fatigue crack growth of directional solidified superalloy with single hole, the fatigue crack growth test of DZ125 was carried out under different stress levels. The fracture morphology of the specimens were analyzed by field emission scanning electron microscope, and the relationship between stress and life was fitted. It is found that the stress concentration around the hole and the defects lead to the crack initiation near the maximum principal stress point. The da/dN - Δ K satisfies Paris formula well.
Research on the Construction of Cooperative Production Risk Prevention and Control Management Mechanism Based on MQPT Fuzzy Analytic Hierarchy Process
Authors: Zheng Huali 
Published: March 2021

Abstract
Strengthening the cooperative production of cigarette brands is to actively promote the reform of the resource allocation method centered on the brand. It is an important measure to promote the rational flow of production factors and the optimal allocation of industry resources. It is also to promote the rapid development of key brands in the industry, and it is truly a leading an important guarantee for the new pattern of brand development. However, due to many reasons, the cooperative production of cigarettes will inevitably produce various risks, which will endanger the brand reputation. How to achieve the common and sustainable development of cooperative production of cigarettes, strive to promote the high-quality development of cooperative production, and carry out risk prevention of cooperative production Research is very necessary. This subject research and the actual situation of cooperative production to carry out specific research. From a qualitative point of view, the possible risks of cooperative production are classified according to work attributes and work cycles, and the cooperative production is analyzed from the aspects of quality (equipment hardware and technology and key processes), material management, and basic management (plan and personnel). Quality risk sources and identification methods; from a quantitative perspective, combined with some possible risk sources proposed by qualitative analysis, a risk assessment model for cooperative production is constructed.
Visual Analysis of Miner Safety Research Based on Knowledge Graph
Authors: Hongxia Li , Meidan Liu 
Published: March 2021

Abstract
Li Hongxia (1965-), female, from Zunhua, Hebei, professor, doctoral tutor, currently the deputy dean of the Graduate School of Xi’an University of Science and Technology, her main research direction is safety management, corporate organizational behavior and management, safety economy and management, etc.
In order to better understand the current research status and development trends in the field of miner safety, with the help of CiteSpace analysis tools, 450 papers on the safety of miners from core publications and above in the CNKI database from 1992 to 2020 conduct bibliometric analysis. The results found that the main research content of current miner safety can be roughly summarized into six aspects, including coal mine production and management, miner safety quality, physical and psychological research methods. In the future, in the research of miner safety, it is necessary to adhere to the combination of theory and practice, and multi-disciplinary integrated research, to provide deeper and more comprehensive protection for miner safety.
Design of an Interactive Device for Children’s Environmental Science Education on Plastic Pollution in Polar Regions Based on Open Source Programming Language
Authors: Fan Yuning 
Published: March 2021

Abstract
With open-source programming languages, Processing and Arduino, this device realizes man-machine interaction. It has the characteristics of a wide application range and a strong visual expression. Designers and artists can make their ideas real through Processing and Arduino. In recent years, plastic waste can be seen in every corner of the world, which means that raising people’s awareness of environmental protection is urgently needed. Childhood is a key period for developing environmental awareness. In this paper, a popular science device related to environmental protection, taking children as the main target group, was designed and produced. The device provides a combination of technology and art to educate children about environmental enlightenment through external hardware configurations (switches, light sensing and pressure sensing) and on-screen images that show polar bears living in large amounts of plastic pollution.
Optimization of distribution cabinet assembly process based on value stream mapping technology
Authors: Feng Taozhu , Wang Chunna 
Published: March 2021

Abstract
Aiming at the problems of excessive work-in-process, unbalanced production, and unreasonable production methods in the assembly process of S company’s low-voltage switch gear A cabinet, the value stream mapping technology was used to propose an improvement plan for the assembly process, and finally the Flexsim simulation technology The optimization effect of the scheme was tested, and the simulation results showed that the production balance rate, delivery cycle, number of products in process, and fatigue strength of workers have all been effectively improved, which also reduced production costs for the company.
Design of adaptive rate FH-OFDM system based on 802.11g
Authors: WeiQing Fu , JianRu Liang , MingLai Yang 
Published: March 2021

Abstract
In this paper, the wireless communication system based on 802.11g protocol is studied, and a set of FH-OFDM system supporting adaptive transmission rate is designed. The maximum transmission rate can reach 6.75Mbps, which is much higher than 2Mbps transmission rate of traditional FHSS system. A new joint receiver and transmitter detection algorithm is proposed to reduce the error rate of FH position detection by 8.8dB∼11.68dB. The frequency hopping codebook is obtained by counting the bit error rate (BER) of each subcarrier. Selecting the subcarriers with lower bit error rate as frequency hopping points can further reduce the detection error rate by 4.27dB∼6.17dB, the bit error rate by 8.0778dB∼17.4121dB (in the case of 54/8Mbps), and 0.0533dB∼21.6286dB (in the case of 6/8Mbps). And in this paper, we choose the most appropriate transmission rate under different mobile speed and different SNR. By adaptive rate, we can get high performance and efficient equalization of the system.