2021 6th International Conference on Transportation Information and Safety (ICTIS)最新文献_第2页

Maritime Traffic Network Extraction and Application Based on AIS Data 基于AIS数据的海上交通网络提取与应用

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798507

H. Rong, Â. Teixeira, Carlos Soares

{"title":"Maritime Traffic Network Extraction and Application Based on AIS Data","authors":"H. Rong, Â. Teixeira, Carlos Soares","doi":"10.1109/ICTIS54573.2021.9798507","DOIUrl":"https://doi.org/10.1109/ICTIS54573.2021.9798507","url":null,"abstract":"The paper presents a data-driven approach for maritime traffic network extraction based on Automatic Identification System (AIS) data. A maritime traffic network, consisting of nodes that represent waypoint areas and navigational legs, is constructed to represent the maritime traffic at a larger scale. The proposed maritime traffic network extraction approach consists of three phases: 1) extraction of maritime traffic motion patterns based on historical Automatic Identification System data; 2) enrich the ship trajectories with semantic information and each ship trajectory is abstracted as an “origin-waypoint-destination” itinerary object; 3) ship itinerary objects are further merged into nodes and edges of a directed maritime traffic network. Based on the maritime traffic network, a hierarchical reasoning approach is proposed to associate a partially observed ship trajectory to the derived compatible ship routes and ship abnormal behaviour can be detected. The presented method can assist maritime authorities to improve the efficiency of maritime traffic surveillance and to develop strategies to improve navigation safety.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130354582","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}

引用次数: 0

Causal Analysis of Ship Accidents in China Coastal Waters Based on Complex Network Theory 基于复杂网络理论的中国沿海船舶事故原因分析

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798587

Xinyi Yu, Kezhong Liu, J. Montewka, Q. Yu

{"title":"Causal Analysis of Ship Accidents in China Coastal Waters Based on Complex Network Theory","authors":"Xinyi Yu, Kezhong Liu, J. Montewka, Q. Yu","doi":"10.1109/ICTIS54573.2021.9798587","DOIUrl":"https://doi.org/10.1109/ICTIS54573.2021.9798587","url":null,"abstract":"The navigational environment for sea-going ships is complex as it involves various influence factors, hence impacts the ship safety and even leads to accidents. To analyse the causation of those accidents, identify the key factors and determine the high-risk scenarios, this study acquires experience of using the complex network in road/air traffic domain, establishes a network model based on the historical accident records and investigates the causation by using causation chains approaches and complex network theory. For the sake of this aim, the study firstly collected five years of accident data in the water along the costal of China and determined the causation chains for each accident. Then, a network model was developed to combine all the determined chains. While using complex network theory, the analysis was illustrated to clarify the characteristic of the developed network and the accident risk under different stages. Ultimately, a conclusion was drawn, highlighting that ship collision is the major type of accidents. The accident risk for ships presented remarkable characteristics of random transition and derivation. Nevertheless, the whole system has high resilience on single failure but is easy to collapse when several incidents exist. This research may provide theoretical support for ship navigation safety supervision as well as maritime transportation system risk prevention.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130595253","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}

引用次数: 0

Asphalt Pavement Image Segmentation Method Based on Optimized Markov Random Field 基于优化马尔可夫随机场的沥青路面图像分割方法

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798459

Han Liu, Ronggui Ma, Yongshang Li

引用次数: 0

Analysis on Influencing Factors of accidents at national and provincial road intersections based on random forest 基于随机森林的国道与省道交叉口交通事故影响因素分析

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798574

Huiying Xu, G. Huang

引用次数: 0

Obstacle recognition method for ship based on 3D lidar 基于三维激光雷达的船舶障碍物识别方法

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798671

Junyi Wang, F. Ma

引用次数: 0

Dynamic framework for weight optimization based urban road network operational state evaluation 基于权重优化的城市路网运行状态评价动态框架

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798572

Kun Xu, M. Ling, Xiaobin Zhong, J. Guo

{"title":"Dynamic framework for weight optimization based urban road network operational state evaluation","authors":"Kun Xu, M. Ling, Xiaobin Zhong, J. Guo","doi":"10.1109/ICTIS54573.2021.9798572","DOIUrl":"https://doi.org/10.1109/ICTIS54573.2021.9798572","url":null,"abstract":"Targeting the needs for dynamic evaluation of the road network traffic operational state, a dynamic framework for urban road network operational state evaluation is proposed based on heuristics weight optimization. In this framework, first, seven indexes are selected for intersections and sections, including saturation, delay, queue length, and equilibrium for intersections, and travel time, number of stops, and travel time dispersion for sections. Second, based on the seven indexes, a simple weighted average method is applied to evaluate the road network state following the intersection-section-network structure. Third, and most importantly, an optimization model is proposed and solved using particle swarm optimization algorithm to find dynamically the optimal weights with respect to expert evaluation during the optimization time interval. Finally, the optimized weights are then applied to evaluate the road network state for application time interval. The proposed framework is validated using VISSIM simulation for two road networks selected from Lianyungang City. Results show that the proposed framework can dynamically fine-tune the weights so that the road network operational state can be evaluated dynamically. Future studies are recommended to incorporate more indexes and apply the framework in real world applications.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348617","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}

引用次数: 0

Three-dimensional Simulation of Emergency Evacuation of Large Cruise Ship Based on Path Network with Width 基于宽度路径网络的大型邮轮应急疏散三维仿真

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798567

Yabin Li, Wenhang Li, Yu Wang

{"title":"Three-dimensional Simulation of Emergency Evacuation of Large Cruise Ship Based on Path Network with Width","authors":"Yabin Li, Wenhang Li, Yu Wang","doi":"10.1109/ICTIS54573.2021.9798567","DOIUrl":"https://doi.org/10.1109/ICTIS54573.2021.9798567","url":null,"abstract":"Aiming at the improvement of emergency evacuation efficiency of cruise ship, three-dimensional emergency evacuation simulations were studied. As to the evacuation model construction, firstly, the road network model with width was proposed, based on which the algorithm of dense crowd passing in road sections with width, as well as the algorithm of evacuation path searching considering distance and traffic flow were proposed. Besides, an improved model of individual collision avoidance was proposed. As to the simulation system, taking a large cruise ship as an example, based on the three-dimensional ship model, the road sections model with width were built, and the spatial nodes such as rooms, restaurants and cinemas were connected to form a path network with width. then the path network of each floor was connected with the evacuation exit to form an evacuation topology network of the whole ship. With the support of the proposed path finding algorithm and the improved individual collision avoidance model, the simulation of emergency evacuation processes were realized and the cruise ship emergency evacuation three-dimensional simulation system was developed. Based on the three-dimensional simulation system, the paper focuses on the simulation of different escape exit layout and different evacuation strategies. By comparing and analyzing the simulation results, the key factors affecting the efficiency and safety of emergency evacuation of cruise ships are accurately identified, which can provide auxiliary support for the design of space layout and evacuation facilities of cruise ships and the optimization of emergency evacuation plan.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121441260","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}

引用次数: 0

Dynamic Gravity Model and Dynamic Behavior Analysis Based on Improved Cost Function 基于改进成本函数的动态重力模型及动态行为分析

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ictis54573.2021.9798618

Liu-Meng Yang, Rui He, Hongxing Zhao

{"title":"Dynamic Gravity Model and Dynamic Behavior Analysis Based on Improved Cost Function","authors":"Liu-Meng Yang, Rui He, Hongxing Zhao","doi":"10.1109/ictis54573.2021.9798618","DOIUrl":"https://doi.org/10.1109/ictis54573.2021.9798618","url":null,"abstract":"This paper introduces a dynamic gravity model of O- D flows changing in discrete-time periods with dynamic characteristics of balance, oscillation, period doubling, and chaos. The original cost function only considers the traffic conditions when it flows freely. This leads to not matching the calculation results of the model and the actual traffic conditions. Therefore, the cost function was improved as follows: when congestion occurs, adding traffic reduction and road capacity is resultant as the traffic volume to the cost function; when obstruction occurs, the study sets a large value to the saturability in the cost function. At this point, the cost function is improved reflecting the three traffic conditions: free, congested, and obstructed. On this basis, the complex dynamic characteristics are found by applying the improved cost function to the double-constrained dynamic gravity model and analyzing the model through bifurcation diagrams, time series diagrams, maximum Lyapunov exponent spectrograms. Finally, by comparing the dynamics maps of the models, it is found that the improved model can easily recover to the periodic state after being disturbed and has stronger robustness and structural stability.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130265317","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}

引用次数: 0

Multi-Objective Green Multimodal Transport Path Optimization with the Participation of High-Speed Railway 高速铁路参与下的多目标绿色多式联运路径优化

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798582

Xiao-lei Liang, Xingyu Liu, Lei Mei, Dongmei Zhang

引用次数: 1

A Novel Artificial Potential Field Based Ship Path Planning Algorithm Using Model Predictive Control Strategy 基于模型预测控制策略的人工势场船舶路径规划算法

2021 6th International Conference on Transportation Information and Safety (ICTIS) Pub Date : 2021-10-22 DOI: 10.1109/ICTIS54573.2021.9798573

Zhibo He, Chenguang Liu, X. Chu, Qing Wu, Songlong Li

{"title":"A Novel Artificial Potential Field Based Ship Path Planning Algorithm Using Model Predictive Control Strategy","authors":"Zhibo He, Chenguang Liu, X. Chu, Qing Wu, Songlong Li","doi":"10.1109/ICTIS54573.2021.9798573","DOIUrl":"https://doi.org/10.1109/ICTIS54573.2021.9798573","url":null,"abstract":"There exist some limitations and defects when the conventional artificial potential field (APF) based methods are utilized for ship path planning, especially in complex navigation scenarios. In consideration of the path planning requirements for emerging autonomous or smart ships, a novel path planning algorithm that combined the improved artificial potential field method with model predictive control is proposed. A novel potential field function is proposed to achieve collision avoidance and target point arrival in complex waters. Then, ship maneuverability based on the Nomoto model is considered to generate the trackable path. Moreover, the path planning problem is converted to a nonlinear optimization problem, and maneuverability models, position update methods, etc., are considered in the constraints. Finally, the path planning problem is solved using model predictive strategy and online optimization algorithm. We verify the effectiveness of the MPC with different prediction steps in a multi-obstacle scenario. The simulation results show that compared to traditional APF and particle swarm optimization (PSO)-based APF, the proposed algorithm can generate a safer and more feasible path in complex scenarios and meet the real-time requirements.","PeriodicalId":253824,"journal":{"name":"2021 6th International Conference on Transportation Information and Safety (ICTIS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134364563","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}

引用次数: 0