At present, most of the research on the proportion of urban complex formats in China focuses on single-function formats, and is less carried out from the perspective of the interactive relationship between different formats. Through the analysis of various types of mixed format products such as transportation and tourism, fully considering the multi-factor comprehensive effect, and combining the actual situation of Suzhou City, this paper conducts an empirical study, trying to explore the site selection points, format ratio and spatial development strategy of traffic and tourism integration products in non-core areas of the city, so as to provide new development ideas for the high-quality development of traffic and tourism integration products in non-core areas of the city.
{"title":"Research on the business format ratio, site selection points, and spatial strategy of the non-core area of Suzhou City","authors":"Shali Zhou, Wei Luo","doi":"10.1117/12.2657867","DOIUrl":"https://doi.org/10.1117/12.2657867","url":null,"abstract":"At present, most of the research on the proportion of urban complex formats in China focuses on single-function formats, and is less carried out from the perspective of the interactive relationship between different formats. Through the analysis of various types of mixed format products such as transportation and tourism, fully considering the multi-factor comprehensive effect, and combining the actual situation of Suzhou City, this paper conducts an empirical study, trying to explore the site selection points, format ratio and spatial development strategy of traffic and tourism integration products in non-core areas of the city, so as to provide new development ideas for the high-quality development of traffic and tourism integration products in non-core areas of the city.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126990318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Traffic congestion prediction is the premise to solve the problem of traffic congestion. Aiming at the problem that traffic volume was rarely considered in traffic congestion prediction based on spatio-temporal characteristics, this paper added two features of bus flow and time occupancy on the basis of temporal correlation and spatial correlation analysis of speed based on floating bus data. A BP neural network speed prediction model optimized by whale optimization algorithm (WOA) considering the temporal and spatial characteristics of bus flow was proposed, and the traffic state was divided into three levels by fuzzy theory. The results show that the speed prediction method based on temporal and spatial characteristics and bus flow characteristics proposed in this paper has good performance. Compared with the traditional BP neural network prediction results, the root mean square error and mean absolute error of WOA-BP neural network prediction model are reduced by 11.7% and 11.2% respectively, and the determination coefficient reaches 93.7%. The prediction accuracy of traffic congestion based on fuzzy theory is 90.06%, and the prediction accuracy of the model is higher.
{"title":"Traffic congestion prediction of urban trunk roads based on bus floating vehicle data","authors":"X. Ming, Mei Xiao, Li-Yu Daisy Liu, Hongtao Huang","doi":"10.1117/12.2658584","DOIUrl":"https://doi.org/10.1117/12.2658584","url":null,"abstract":"Traffic congestion prediction is the premise to solve the problem of traffic congestion. Aiming at the problem that traffic volume was rarely considered in traffic congestion prediction based on spatio-temporal characteristics, this paper added two features of bus flow and time occupancy on the basis of temporal correlation and spatial correlation analysis of speed based on floating bus data. A BP neural network speed prediction model optimized by whale optimization algorithm (WOA) considering the temporal and spatial characteristics of bus flow was proposed, and the traffic state was divided into three levels by fuzzy theory. The results show that the speed prediction method based on temporal and spatial characteristics and bus flow characteristics proposed in this paper has good performance. Compared with the traditional BP neural network prediction results, the root mean square error and mean absolute error of WOA-BP neural network prediction model are reduced by 11.7% and 11.2% respectively, and the determination coefficient reaches 93.7%. The prediction accuracy of traffic congestion based on fuzzy theory is 90.06%, and the prediction accuracy of the model is higher.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128140355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Echelon utilization is an effective way to improve the utilization efficiency of retired power batteries. However, in different development periods of the recycling market, there is different mismatch between the number of used batteries and the demand for energy storage, which affects the decision-making and optimization of new energy vehicles supply chain. To solve this problem, a closed-loop supply chain model composed of battery manufacturer, passenger car manufacturer and third-party recycler was constructed. Stackelberg game theory was used to study the recycling market in the early stage of development (the recycling quantity is greater than the energy storage demand) and the mature stage (the recycling quantity is less than the energy storage demand), and it was found that: Under decentralized decision-making, the expansion of the energy storage market scale can effectively promote battery recycling and secondary utilization, but this effect cannot be achieved under centralized decision-making. The selling price of secondary batteries is not affected by the loss of power batteries in the early stage of the development of the recycling market, and is proportional to the loss rate of power batteries in the mature period of the recycling market. In the early stage of the development of the recycling market, the cost-sharing contract can achieve closed-loop supply chain coordination, but the revenue-sharing contract cannot achieve supply chain coordination. In the mature period of the recycling market, both contracts can achieve coordination.
{"title":"Closed-loop supply chain decision of new energy vehicles considering the cascade utilization of power batteries","authors":"Shengzhong Zhang, Z. Zheng, Wuqiang Li","doi":"10.1117/12.2658641","DOIUrl":"https://doi.org/10.1117/12.2658641","url":null,"abstract":"Echelon utilization is an effective way to improve the utilization efficiency of retired power batteries. However, in different development periods of the recycling market, there is different mismatch between the number of used batteries and the demand for energy storage, which affects the decision-making and optimization of new energy vehicles supply chain. To solve this problem, a closed-loop supply chain model composed of battery manufacturer, passenger car manufacturer and third-party recycler was constructed. Stackelberg game theory was used to study the recycling market in the early stage of development (the recycling quantity is greater than the energy storage demand) and the mature stage (the recycling quantity is less than the energy storage demand), and it was found that: Under decentralized decision-making, the expansion of the energy storage market scale can effectively promote battery recycling and secondary utilization, but this effect cannot be achieved under centralized decision-making. The selling price of secondary batteries is not affected by the loss of power batteries in the early stage of the development of the recycling market, and is proportional to the loss rate of power batteries in the mature period of the recycling market. In the early stage of the development of the recycling market, the cost-sharing contract can achieve closed-loop supply chain coordination, but the revenue-sharing contract cannot achieve supply chain coordination. In the mature period of the recycling market, both contracts can achieve coordination.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126407419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the rapid development of Chinese economy, the urban logistics distribution business has surged, and in order to approach the energy crisis and environmental pollution and other problems, China vigorously promotes the application of new energy vehicle industry, which makes the pure electric vehicles in the logistics field has been applied on a large scale, for the different distribution paths and different operation modes of electric logistics vehicles with quota charging method, the impact on the logistics distribution cost is different. In this paper, by analyzing the development status of electric logistics vehicles in China, combining the characteristics of electric logistics vehicles, and aiming at cost minimization, we establish an optimization model of urban distribution path of electric logistics vehicles based on quota charging method, and combine the constraints of quantity constraint, power constraint, load constraint, time window constraint, etc., to obtain and analyze the distribution scheme and distribution results of electric logistics vehicles under quota charging method, so as to provide logistics enterprises with the opportunity to It provides suggestions for logistics enterprises to reasonably plan distribution paths for electric logistics vehicles.
{"title":"Research on optimization of urban distribution route of electric logistics vehicles based on quota charge mode","authors":"Cheng Cheng, Xifu Wang, M. Shen, Yongshun Yu","doi":"10.1117/12.2658663","DOIUrl":"https://doi.org/10.1117/12.2658663","url":null,"abstract":"With the rapid development of Chinese economy, the urban logistics distribution business has surged, and in order to approach the energy crisis and environmental pollution and other problems, China vigorously promotes the application of new energy vehicle industry, which makes the pure electric vehicles in the logistics field has been applied on a large scale, for the different distribution paths and different operation modes of electric logistics vehicles with quota charging method, the impact on the logistics distribution cost is different. In this paper, by analyzing the development status of electric logistics vehicles in China, combining the characteristics of electric logistics vehicles, and aiming at cost minimization, we establish an optimization model of urban distribution path of electric logistics vehicles based on quota charging method, and combine the constraints of quantity constraint, power constraint, load constraint, time window constraint, etc., to obtain and analyze the distribution scheme and distribution results of electric logistics vehicles under quota charging method, so as to provide logistics enterprises with the opportunity to It provides suggestions for logistics enterprises to reasonably plan distribution paths for electric logistics vehicles.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131312892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the progress of times, the sensors used to monitor tunnels have been changed from resistive and isopoint-based sensors to FBG sensors with high accuracy, reliability and sensitivity. Meanwhile many researchers have proposed different monitoring methods based on fiber Bragg grating (FBG) sensors, but the effect of layout schemes on the monitoring performance of FBG sensors is rarely discussed. In this paper, the effectiveness of the hybrid algorithm for shield tunnel layout optimization is verified by proposing an improved whale algorithm to optimize the shield tunnel sensor layout with a shield tunnel as a model and simulating its loading conditions. By comparing with the traditional uniform layout, the results surface that the error of the layout provided by the improved algorithm is much smaller than that of the uniform layout direction, and the curve fitted by the curvature fitting algorithm is closer to the real curve, which proves that the method proposed in this study can better increase the monitoring performance of FBG sensors.
{"title":"Shield tunnel layout study with fiber grating sensor based on improved whale algorithm","authors":"Baoliang Zong, Tipeng Zheng, Zhongchao Zhao","doi":"10.1117/12.2657868","DOIUrl":"https://doi.org/10.1117/12.2657868","url":null,"abstract":"With the progress of times, the sensors used to monitor tunnels have been changed from resistive and isopoint-based sensors to FBG sensors with high accuracy, reliability and sensitivity. Meanwhile many researchers have proposed different monitoring methods based on fiber Bragg grating (FBG) sensors, but the effect of layout schemes on the monitoring performance of FBG sensors is rarely discussed. In this paper, the effectiveness of the hybrid algorithm for shield tunnel layout optimization is verified by proposing an improved whale algorithm to optimize the shield tunnel sensor layout with a shield tunnel as a model and simulating its loading conditions. By comparing with the traditional uniform layout, the results surface that the error of the layout provided by the improved algorithm is much smaller than that of the uniform layout direction, and the curve fitted by the curvature fitting algorithm is closer to the real curve, which proves that the method proposed in this study can better increase the monitoring performance of FBG sensors.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124679397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The township territorial spatial planning is the most basic part of the "five levels and three types" territorial spatial planning system, with the aim of realizing the precise landing of all kinds of territorial spatial elements and establishing a "one blueprint" for the whole area of the township as the main work content. In addition to strictly following the technical specifications or standards set by the state, its preparation should also combine the characteristics of regional resource background to determine feasible measures that can effectively guide the protection and utilization of local natural resources. This paper mainly focuses on the township territorial spatial planning as the research object, combined with the preparation practice of "Wuhan Xinzhou District Sandian Street Street Territorial Spatial Planning (2020-2035)", from the background and significance of the preparation of the township territorial spatial planning, research and analysis, evaluation and judgment, and other perspectives and links, and then sort out how to scientifically formulate the planning positioning and development goals of the township territorial spatial planning.
{"title":"Study on research issues in township territorial spatial planning","authors":"Haowen Song","doi":"10.1117/12.2657871","DOIUrl":"https://doi.org/10.1117/12.2657871","url":null,"abstract":"The township territorial spatial planning is the most basic part of the \"five levels and three types\" territorial spatial planning system, with the aim of realizing the precise landing of all kinds of territorial spatial elements and establishing a \"one blueprint\" for the whole area of the township as the main work content. In addition to strictly following the technical specifications or standards set by the state, its preparation should also combine the characteristics of regional resource background to determine feasible measures that can effectively guide the protection and utilization of local natural resources. This paper mainly focuses on the township territorial spatial planning as the research object, combined with the preparation practice of \"Wuhan Xinzhou District Sandian Street Street Territorial Spatial Planning (2020-2035)\", from the background and significance of the preparation of the township territorial spatial planning, research and analysis, evaluation and judgment, and other perspectives and links, and then sort out how to scientifically formulate the planning positioning and development goals of the township territorial spatial planning.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"12460 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131159995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Yang, Jianmeng Liu, Y. Bai, Ye Zhu, Yinying Liu
One-way carsharing is a new urban transport alternative allowing members to use the car from a fleet of vehicles for short periods. In carsharing system, the imbalanced vehicle distribution at stations by dynamic demands is a general problem, lowering the efficiency of the system. To evaluate the performance of carsharing system, this paper focuses on the opportunity loss of vehicle inventories at stations. A service level KPI is established to observe the full-car status, no-car status and no-battery status separately on stations. By conducting a real case study in Toyota, the result shows that the service level in different time periods at a station-level and cluster level. It shows that no-car status is the primary opportunity loss existing in Ha:mo carsharing system. Based on the clustering analysis of opportunity loss status, different suggestions are given to reduce the probability of potential demand in a cluster level. The result also provides a good basis for further system planning and deployment.
{"title":"Preliminary performance analysis of one-way car sharing system with a focus on opportunity loss","authors":"J. Yang, Jianmeng Liu, Y. Bai, Ye Zhu, Yinying Liu","doi":"10.1117/12.2657822","DOIUrl":"https://doi.org/10.1117/12.2657822","url":null,"abstract":"One-way carsharing is a new urban transport alternative allowing members to use the car from a fleet of vehicles for short periods. In carsharing system, the imbalanced vehicle distribution at stations by dynamic demands is a general problem, lowering the efficiency of the system. To evaluate the performance of carsharing system, this paper focuses on the opportunity loss of vehicle inventories at stations. A service level KPI is established to observe the full-car status, no-car status and no-battery status separately on stations. By conducting a real case study in Toyota, the result shows that the service level in different time periods at a station-level and cluster level. It shows that no-car status is the primary opportunity loss existing in Ha:mo carsharing system. Based on the clustering analysis of opportunity loss status, different suggestions are given to reduce the probability of potential demand in a cluster level. The result also provides a good basis for further system planning and deployment.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134231324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Most of the newly-built pavements of airports in China are rigid pavements made of cement concrete, which have good durability, stability and high strength. However, the early cracks in the airport pavement construction may endanger flight safety. If it is not dealt with in time, the life of the pavement will be shortened and even cause flight safety accidents under the cumulative effect of aircraft impact loads for a long time and the influence of the natural environment. This paper analyzes the causes of early cracks in the cement concrete pavement of the airport and proposes a series of preventive measures to control them in combination with the expansion project of the deicing floor of Tianjin Airport.
{"title":"Analysis and control of early cracks of airport concrete pavement","authors":"Z. Gao","doi":"10.1117/12.2658166","DOIUrl":"https://doi.org/10.1117/12.2658166","url":null,"abstract":"Most of the newly-built pavements of airports in China are rigid pavements made of cement concrete, which have good durability, stability and high strength. However, the early cracks in the airport pavement construction may endanger flight safety. If it is not dealt with in time, the life of the pavement will be shortened and even cause flight safety accidents under the cumulative effect of aircraft impact loads for a long time and the influence of the natural environment. This paper analyzes the causes of early cracks in the cement concrete pavement of the airport and proposes a series of preventive measures to control them in combination with the expansion project of the deicing floor of Tianjin Airport.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133263442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shaohua Liu, Zhiqiang Zhang, Juan Shi, Jiarui Zhang, Dongliang Geng
With the improvement of the level of autonomous driving vehicles, the software and hardware structure of the autonomous driving system becomes more and more complex, so ensuring the safety of autonomous driving vehicles is the most important safety issue. At present, the commonly used test methods include closed sites, open roads, and simulation tests. The test focuses on conventional road sections, traffic objects, and sunny weather, but the actual driving process of vehicles encounters complex environments and scenes. In this paper, the exploration and practice of the hardware in the loop simulation test method of the automatic driving awareness system on foggy days were carried out, the working performance of the automatic driving awareness system under different visibility on foggy days was analyzed, and improvement suggestions were put forward for the measured sensors.
{"title":"Foggy weather analysis and test method research of automatic driving sensing system","authors":"Shaohua Liu, Zhiqiang Zhang, Juan Shi, Jiarui Zhang, Dongliang Geng","doi":"10.1117/12.2658236","DOIUrl":"https://doi.org/10.1117/12.2658236","url":null,"abstract":"With the improvement of the level of autonomous driving vehicles, the software and hardware structure of the autonomous driving system becomes more and more complex, so ensuring the safety of autonomous driving vehicles is the most important safety issue. At present, the commonly used test methods include closed sites, open roads, and simulation tests. The test focuses on conventional road sections, traffic objects, and sunny weather, but the actual driving process of vehicles encounters complex environments and scenes. In this paper, the exploration and practice of the hardware in the loop simulation test method of the automatic driving awareness system on foggy days were carried out, the working performance of the automatic driving awareness system under different visibility on foggy days was analyzed, and improvement suggestions were put forward for the measured sensors.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In view of the explosive growth of information on online travel websites and the long-term information overload of tourists, it is particularly important to plan travel routes for different tourists to meet their individual needs. The paper also establishes a travel itinerary planning model with time and cost as constraints and the highest score and shortest distance as the goal, and uses Shanghai tourist attractions as examples to provide reference and guidance for related tourism products.
{"title":"Personalized travel route planning based on OTA platform","authors":"Xue'er Zou, Xiangyu Yu","doi":"10.1117/12.2658421","DOIUrl":"https://doi.org/10.1117/12.2658421","url":null,"abstract":"In view of the explosive growth of information on online travel websites and the long-term information overload of tourists, it is particularly important to plan travel routes for different tourists to meet their individual needs. The paper also establishes a travel itinerary planning model with time and cost as constraints and the highest score and shortest distance as the goal, and uses Shanghai tourist attractions as examples to provide reference and guidance for related tourism products.","PeriodicalId":212840,"journal":{"name":"Conference on Smart Transportation and City Engineering","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132788800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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