bluuebunny/crossref_metadata_2025_split huggingface dataset:
Terminal Evaluation System Based on Digital Twin and Its Application
Authors: Yuan Jianan , Zhen Yan , Huo Chao , Zheng Libin 
Published: July 2021

Abstract
Many deployed terminal devices require high stability after equipment delivery, and the project cycle is short, the task is many, the time is tight, and the manpower is limited. At present, the test of this kind of equipment is carried out by the combination of manual configuration of test instruments and manual duty, and there are many problems. In order to reduce the test cost and promote the development of the industry, this paper studies the terminal evaluation method and system based on digital twin technology, realizes the simulation test of terminal function integrity, performance compliance, protocol standard compliance, compatibility, security and reliability at the virtual level, and selects the necessary test items. The application of project results can ensure the high scalability of terminal evaluation and reduce the waste of resources caused by unnecessary testing.
Chipless tag detection and recognition based on frequency modulated continuous wave
Authors: Zhang Qianglin , Zou Chuanyun , Jiao Liangyu 
Published: July 2021

Abstract
Towards the commercialization of chipless radio frequency identification (RFID) systems, there are still some pressing issues. The detection and identification of chipless RFID tags are mainly realized by a vector network analyzer (VNA). In practice, this equipment is costly and not convenient enough. This paper designs a maneuverable detection model based on frequency modulated continuous wave (FMCW), the detection target is an 8-bit chipless tag based on a variable-side-length spiral resonance unit and decodes the amplitude and phase information. On this basis, signal processing is performed on the generated amplitude and phase based on the Savitzky-Golay (SG) smoothing algorithm, and then the simulation data of HFSS is compared with ADS model data by the matrix pencil method (MPM). The results show that the proposed FMCW-based method can be effectively implemented in wireless communication, providing a new solution for flexible and inexpensive chipless tag detection and recognition.
Distributed Robust Optimization of Integrated Energy System Considering Integrated Demand Response
Authors: Dong Shuai , Wang Shaomin , Lin Zhuoran , Jian Xuehui , Sun Fengjie , Sun Hongyu 
Published: July 2021

Abstract
Integrated energy system is receiving extensive attention. In order to solve the problem of economic operation caused by uncertainty of renewable energy generation in integrated energy system, a distributed robust optimization method considering integrated demand response is proposed. Firstly, the optimization model of integrated energy system is established by taking the minimum total cost of system operation as the objective function. Secondly, the probability distribution of the random vector of power prediction error is described in the form of set, which does not need to limit the probability distribution form of the random vector, but describes all possible probability distribution of the random variable by moment uncertainty ambiguity sets. Thirdly, the demand response is considered to alleviate the economic growth of integrated energy system in response to uncertainty. Finally, the effectiveness of proposed method is proved by a simple integrated energy system.
A Delivery Time-based Competition Strategy for Community O2O e-tailer: A Study
Authors: Chang Liu 
Published: July 2021

Abstract
The community O2O e-tailer can offer the trade of life services within a five-kilometer radius of the community by building online and offline interactive e-tailer platforms between residents and businesses. However, the development of community O2O e-tailer has not been going as planned, failing many expectations. Hence, this paper investigates the two main influencers, namely price and delivery time, by taking the new e-tailers entering the online retail market as the research object. Through a Stackelberg model of community O2O e-tailer and B2C retailer, the competition strategies for the community O2O e-tailers are analyzed. The results revealed that the community O2O e-tailer could not gain any advantage under the homogenized competition. For the sustainable development of e-tailers, a thorough analysis of the community needs, and hence a differentiated competition strategy is required. The post-pandemic period offers a seamless opportunity to do that, which will allow the O2O e-tailer to transform and develop.
Numerical simulation of slope failure treatment of a tunnel portal section based on MIDAS GTS
Authors: Wang Yetao , Zhu Guanyu , Ding Linbo , Zhuang Dequan , Ba Wenwen 
Published: July 2021

Abstract
In order to ensure the safety of tunnel construction, a retaining structure is needed to control landslides and reinforce tunnels in slope failure areas. Numerical simulation is used to study the interaction mechanism between tunnel excavation and slope displacement under the reinforcement of the “upper retaining” anti-slide pile. The results show that: the “upper retaining type” anti-slide pile as the supporting structure has a significant effect on the control of tunnel deformation in the slope failure section; the displacement deformation of the tunnel vault is consistent with that of the anti-slide pile, which indicates that the anti-slide pile retaining structure based on the “tunnel landslide system” can significantly improve the stress of the tunnel structure and is conducive to the safety of the tunnel structure and stability of the slope.
Analysis of sediment variation trend and genesis in Jinzhou Port Sea area
Authors: Jing Xu , Nan Wang , Youping Shou , Mingjing Tian 
Published: July 2021

Abstract
This paper collected the monitoring data of jinzhou sea in July 2008, September 2013 and September 2016, and analyzed in detail the variation trend of main pollutants (copper, lead, zinc, cadmium, mercury, arsenic, chromium, petroleum, sulfide, and organic carbon) in the sediment in Jinzhou sea. The results show that the regional Marine sediment environment before the implementation of reclamation (July 2008) is general, the regional Marine sediment environment during the implementation of reclamation (September 2013) and at the present stage (September 2016) is good, and the Marine sediment shows a good trend after the implementation of reclamation project. With the construction of the port area, large-scale dredging and backfilling, the contaminated surface layer sediments in the port area have been effectively removed and controlled.
A Vision-Inertial Odometer Design Based on ORB and Sliding Window
Authors: Liu Qinghe , Zhang Xue , Zhang Yankun , Zhao Guqi 
Published: July 2021

Abstract
In order to improve the positioning accuracy and system reliability of the visual odometer in outdoor environment, this paper proposes an unmanned vehicle positioning system using monocular camera and Inertial measurement unit (IMU). The system uses improved ORB algorithm to extract image feature points and establishes a tightly coupled visual-inertial odometer system based on sliding window and nonlinear optimization. Verified by experiment, it can adapt to the environment of changing light, and can complete the positioning task of unmanned vehicles in the outdoor environment.
Analysis of cascading failures of interdependent networks based on time-delay coupled map lattices model
Authors: Hu Tao , Wang Dong , Liu He , Yang Xin , Jiang Longting , Zhu Shijian , Huang Zhenyu 
Published: July 2021

Abstract
The robustness of coupled network under cascading failure has attracted a lot of attention. In real word, the networks don’t exist in isolation, and the interdependent network is an important network model. In the process of fault propagation, there is usually delay, and a node may have multiple interdependent links. A cascading failure model based on coupled map latices for small word interdependent network is built in this paper. The research shows that when the external perturbation 3.7<R<4.0, the cascading failure ranges of high-degree and random strategy in interdependent network are close, and the different time-delay can induce different range of cascading failure in interdependent network. The thresholds of the external perturbation are common under different time-delay when the whole interdependent network is failed. The time-delay also can prolong the failure spreading time during which measures can be taken to suppress cascading failures. The research can provide a reference for building high-robust transport interdependent network.
Design of Racing Car Muffler in FSAE Based on GT-Power
Authors: Wang Zhengming , Pan Jialun , Su Wei 
Published: July 2021

Abstract
Muffler plays a very important role in the internal combustion engine vehicle, and plays a key role in reducing noise. Formula SAE (FSAE) also has strict rules for noise, so the proper muffler is very important. Using GT-Power series software to optimize the internal structure of muffler is a common solution at present. Through the cooperation of resistance structure and resistance structure, noise loss can reach 20%, and finally the design scheme meeting the target is obtained. At the same time, the resistive structure is conducive to improve the exhaust back pressure, so as to improve the torque output of the vehicle at low speed. Through the simulation analysis of the software and the coupling analysis of dynamic performance and noise value, a muffler suitable for FSAE can be obtained.
Wrinkling instability and mandrel design of thin walled tube
Authors: Lu Chong , Lu Lianzhu 
Published: July 2021

Abstract
In view of the wrinkling and instability phenomenon in the bending process of thin-walled pipe, the factors such as bending die, pipe material, bending technical parameters and bending equipment are analyzed. The ideal pipe fitting method is achieved by designing the chain disk mandrel, reasonably selecting the number of mandrel chain plates and mastering its correct use method.
Research on Technology of Accuracy Related Tests of Pressure Transmitters on Rolling Stocks
Authors: Zihua Li , Yu Cao , Xiebin Ding , Dongsheng Zhao 
Published: July 2021

Abstract
Many pressure transmitters are used on rolling stocks, and their reliability and accuracy are of importance to the safety of the railway systems. In this paper, the technical solutions of accuracy related tests of different types of pressure transmitters and the effect of temperature on accuracy are studied and are carried out to verify that the test results meet the requirements in the relevant standards
Research on Strength Test Technology and Fatigue Evaluation Method of Bogie Frame and Body Bolster
Authors: Yu Cao , Chong Lu , Zihua Li , Jie Song , Xiebin Ding 
Published: July 2021

Abstract
Bogie frame and body bolster are of vital importance to the reliable operation of the rolling stocks. There are two kinds of test methods for bogie frame and body bolster. One is separate test, and the other is joint test. To effectively detect the strength performance of bogie frame and body bolster as well as to improve the test efficiency, we adopted the method of joint test, and designed the test plan according to the standard. The strength test of bogie frame and body bolster is carried out where load analysis is studied and applied. The structural performance of bogie frame and body bolster is evaluated by means of Goodman fatigue limit diagram.
Research on Key Influence Factors of Sustainable Development Capability of Smart City Based on Hybrid Decision Model
Authors: Huang Yuantao , Hu Yingtong 
Published: July 2021

Abstract
The development of economy and the progress of human society are urging the pace of urban development. The combination of urban services, information and communication technologies has given birth to smart cities. In the long-term construction process, the sustainable development capacity of smart cities is weak. In order to enhance the sustainable development capability of smart cities, we establish an indicator system of factors affecting the sustainable development of smart cities and use decision-making trial and evaluation laboratory (DEMATEL) and analytic network process based on DEMATEL (D-ANP) to analyze the interrelationships and relative importance of influence factors. The results reveal that in the evaluation index system of smart city sustainability development, Smart governance (D2) has the greatest impact on other dimensions. As for the impact on the sustainable development of smart cities, the influence of smart city mechanism (D3) has the largest weight, smart people’s livelihood (D1) and Smart governance (D2) have similar weights. Based on the results, suggestions for improvement are provided for the sustainable development of smart cities.
A Lossy Compression Algorithm for Phasor Measurement Units Data Based on Auto-encoder and Long Short Term Memory
Authors: Wang Shouxiang , Zhang Sheng , Hu Shiyao , Rong Chunyan , Chen Haiwen 
Published: July 2021

Abstract
With the wide deployment of phasor measurement units (PMU) in power system, the amount of data generated by various measurement devices is increasing, which brings new challenges to data transmission and storage. In this paper, a lossy data compression algorithm based on auto-encoder and Long Short-Term Memory (LSTM) is proposed for PMU data. Specifically, the auto-encoder is used to extract the features of the measurement data first, and then saved the feature vectors to achieve the effect of data compression. When need to decompress the measurement data, the compressed data is input into the decoder to achieve decompression. Compared with the traditional algorithms, the algorithm proposed in this paper can effectively reduce the reconstruction error. At the same time, it can be combined with the existing lossless compression algorithm to further improve the compression rate.
Preferred Parking Space Recommendation Method Based on Multi-attribute Decision-making Algorithm
Authors: Fei Chen , Xiaolin Li 
Published: July 2021

Abstract
Based on a large parking lot with a large number of parking spaces and different parking space attributes, combined with the attributes of free parking spaces and the driver’s preference factors when choosing parking spaces, a preferred parking space recommendation method based on a multi-attribute decision-making algorithm is proposed. In the decision-making process, a new weighting method is proposed to avoid the shortcomings of subjective arbitrariness and ignoring subjective preferences, while reducing the deviation between the combined weight and the subjective and objective weights. Finally, the absolute deviation method is used to verify the new weighting method, the effectiveness of the algorithm will also be verified through examples.
Study on the minimum distance between three lane ramp continuous exits of stereoscopic structure highway
Authors: Meng Lian , Zhiwei Zhang , Jian qiang Gao , Yuanyuan Jin 
Published: July 2021

Abstract
Under the design model of stereoscopic structure highway, conventional one-lane and two-lane ramps can no longer meet the traffic conversion requirements of interchange, so three-lane ramps should be designed in interchange. Due to the changing of design form, the existing single-lane and dual-lane design indicators cannot meet the design requirements of the three-lane ramp, especially in the continuous diversion area. Thus, according to the design requirements of the three-lane ramp in the stereoscopic structure highway, this paper discusses the distance between adjacent connecting parts when the main line and the ramp are continuously diverted. First, it analyzes the driving behavior on the continuous diversion section of the ramp. Then, based on the lane-changing theory, the formula of the vehicle lane-changing length, the driver’s recognition of the signs, the driving behavior are used to establish the models, which calculate the main line to the ramp diverging stage and ramp again diverging stage. After that, the recommended value of the minimum distance between consecutive exits at different ramp design speeds can be calculated. Finally, a 360 ° full view driving simulation platform is used to verify the rationality and applicability of the model from the aspects of driving trajectory, speed running characteristics and driver’s physiological index changes. The experimental results show that the value of the calculation model conforms to the driving habit, and all test drivers successfully completed the experiment, and the average driving distance in the experiment is less than the theoretical calculation value. Therefore, it can be considered that the theoretical model and relevant parameters established in this paper are reasonable and have certain engineering applicability.
Railway Timetable Optimization for Air-Rail Intermodal Service
Authors: Wang Anyu , Cheng Yan , Nie Lei , Fujiyama Taku 
Published: July 2021

Abstract
Both aviation and high-speed rail are developing rapidly, which promotes the popularity of intermodal services. However, most cooperation only comes from political support. Operational measures should be taken for further improvement. In such circumstance, a model is proposed in this study to improve the quality of services and strengthen the connectivity between two modes by optimizing the railway timetable. The model is set to maximize the connection numbers of two modes. To take journey is “air-rail” or “rail-air” into consideration, we divide passengers into four groups. The original model is linear and can be calculated by commercial solvers. The models were applied on a case China. The results showed that the model is effective, the connection numbers improved by 40.2%.
Numerical Simulation of Force Mechanism of Nanping Tunnel
Authors: Li Tao , Zhu Baolong , Luo Bo , Li Tao 
Published: July 2021

Abstract
Based on the landslide of Nanping tunnel, the causes of landslide in Nanping tunnel are obtained by using the research method of numerical simulation, and the stress mechanism of tunnel under the action of landslide thrust and the stress change process of tunnel in the process of disease treatment are simulated and studied after the formation of landslide surface, which verifies that the treatment effect of the current treatment measures is good. The results provide a basis for similar projects.
Study on the rise of container liner transportation industry against the trend under the epidemic situation: Research on liner monopoly mechanisaper
Authors: Chen Chujun , Sun Ling , Meng Yijie , Liu Wei 
Published: July 2021

Abstract
In the context of COVID-19, this paper will focus on the rebound of the container market in the context of the epidemic, explore its reasons and experience, and provide theoretical foundations and suggestions for other industries that have been hit hard by the epidemic.
Distribution Center Location Model Based on Gauss-Kruger Projection and Gravity Method
Authors: Zhang Jielin , Weng Ziyang , Guo Yujue 
Published: July 2021

Abstract
The latitude and longitude coordinates are converted into Gaussian plane coordinates through the forward calculation of the Gauss-Kruger projection, and then the location is selected through the center of gravity method, and then the location result is converted into the latitude and longitude coordinates through the reverse calculation of the Gauss-Kruger projection. This method was then applied to the location of distribution centers among the four cities in Zhejiang Province, and reasonable results were obtained.
Function Area Spatial Layout Method of Large High-Speed Rail Hub
Authors: Yue Hao , Duan Yifeng , Zhang Mengyu , Yang Ziyu , Liu Qiumei 
Published: July 2021

Abstract
Physical space of large high-speed rail (HSR) hub is the foundation of passenger aggregation, distribution and transfer. The spatial layout method of its function areas is the research hotspot in the field of transportation hub design. Aiming at the goal of minimizing the pedestrian walking distance, a spatial layout method for function area based on pedestrian flow of high-speed rail hub has come up. According to the characteristics of passenger activity and movement, the hub space is divided into different function areas macroscopically. Combined with case analysis, the general steps of the spatial layout method of high-speed rail hub and effectiveness of this method are illustrated.
A mixed integer programming model based on Biomass Straw Energy Utilization Engineering warehouse logistics site selection
Authors: Guo Chenxi , Wang Zhanwu , Hou Tianjiao 
Published: July 2021

Abstract
When the scale of biomass straw energy utilization project is relatively large, it is necessary to build a biomass straw storage and logistics center to ensure the stability of the project. By biomass straw lowest total logistics cost as the objective, considering the biomass straw briquette processing, variable cost and fixed cost of biomass straw storage cost and biomass straw warehousing logistics center construction cost to build the mixed integer programming model, to determine the biomass straw warehousing logistics center location, flow rate and maximum capacity. Taking Henan Province as an example, the paper selects the stalk storage and logistics center of biomass straw in Xinyang Jinniu Logistics Industry concentration area, Nanyang River logistics park and Zhoukou Port comprehensive logistics park through model calculation.
Layout Design of Chang-Zhu-Tan Tobacco Logistics Park Based on SLP Method
Authors: Kaifan Luo , Ailian Zhou , Kefeng Wang 
Published: July 2021

Abstract
With the development of the tobacco logistics industry, the layout design of the tobacco logistics park is receiving more and more attention. By referring to domestic and foreign research literature and data from Hunan Provincial Statistical Yearbook, using unary linear regression model and gray prediction model to predict the total amount actually entering the Chang-Zhu-Tan Tobacco Logistics Park in the future, using MATLAB software for calculation. According to the calculation results, use the SLP method carries out the layout design of the logistics park, and finally draws the park layout plan diagram, internal flow line diagram and external traffic organization diagram.
Research on Picking Route Optimization Based on Simulated Annealing Algorithm
Authors: Zhang Danyi , Zhang Ji 
Published: July 2021

Abstract
This paper aims to optimize the low efficiency of picking operations in the distribution center at present stage, and to study the problem of outbound picking routes in the same-end in-out automated warehouse. Aiming at the traditional NP difficult-to-solve algorithm, in order to solve the limitations of the accuracy and scale of the existing algorithm, this paper takes a certain outbound task of the Baidie distribution center as an example, which uses the simulated annealing algorithm to optimize the picking path. In addition, the optimization results are compared with the results of the nearest-neighbor heuristic and the nearest-insertion heuristic. The results show that, compared with the nearest-neighbor heuristic and the nearest-insertion heuristic, the path distance of the algorithm designed in this paper is reduced by 25% and 16.67% respectively, which has a significant improvement.