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Simulation Emergency Fire Evacuation Model for Nuclear Power Plant

Journal of Power and Energy Engineering 2021年第4期9卷 30-52页

作者： Amany F. Abd El-Aal Adel Zaghloul Magy M. Kandil National Radiation Monitoring Network Egyptian Nuclear & Radiological Regulatory Authority Cairo Egypt Electronic and Communication Department Faculty of Engineering Zagazig University (Currently at Delta University) Gamasa Egypt Nuclear Law and Licenses Department Egyptian Nuclear& Radiological Regulatory Authority Cairo Egypt

Simulation of egress is vital for minimizing losses during fire disasters, however accurate simulations are scarce and real-life data is hard to come by. In this paper, a Proposed Wireless Fire Evacuation Model (PWFEM) is proposed to simulate fire evacuation process in a short time to minimize evacuee’s exposure to the harmful radiation and fire hazards. The PWFEM simulation realistic by supposing fire scenario at cabined contains electrical cables inside a standard Main Control Room (MCR) in a Nuclear Power Plant (NPP) building. In addition, a new Hybrid Safest Shortest Exit (HSSE) is developed which consists of three stages: safest route based o

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Optimization of a Route Network in Dakar Airspace: Surface Navigation

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American Journal of Operations Research 2022年第2期12卷 64-81页

作者： Mint Elhassen Emani Amadou Coulibaly Salimata G. Diagne Ahmedou Ould Haouba Alain Ngoma Mby Cheikh Anta Diop University Dakar Senegal University of Nouakchott AL Aasriya Nouakchott Mauritanie Agency for Aerial Navigation Safety in Africa and Madagascar Dakar Senegal

In this paper, the map of a network of air routes was updated by removing the non-optimal routes and replacing them with the best ones. An integer linear programming model was developed. The aim was to find optimal routes in superspace based on performance-based navigation. The optimal routes were found from a dijkstra algorithm that calculates the shortest path in a graph. Simulations with python language on real traffic areas showed the improvements brought by surface navigation. In this work, the conceptual phase and the upper airspace were studied.

关键词： Airspace Linear Optimization Graph Theory dijkstra algorithm Performance-Based Navigation Conventional Navigation

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AGV Scheduling Optimization of Automated Port Based on Disruption Management

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Journal of Transportation Technologies 2024年第3期14卷 423-444页

作者： Ching-Kuei Kao Qi-Er Ke King-Zoo Tang Peng-Jung Lin Key Laboratory of LNG Industry Chain Fujian University of Technology Fuzhou China Department of Logistics Management Fujian University of Technology Fuzhou China Department of Information Management Taiwan Chung Cheng University Chiayi Metaverse and New Media College Yango University Fuzhou China

The recent rapid development of China’s foreign trade has led to the significant increase in waterway transportation and automated container ports. Automated terminals can significantly improve the loading and unloading efficiency of container terminals. These terminals can also increase the port’s transportation volume while ensuring the quality of cargo loading and unloading, which has become an inevitable trend in the future development of ports. However, the continuous growth of the port’s transportation volume has increased the horizontal transportation pressure on the automated terminal, and the problems of route conflicts and road locks faced by automated guided vehicles (AGV) have become increasingly prominent. Accordingly, this work takes Xiamen Yuanhai automated container terminal as an example. This work focuses on analyzing the interference problem of path conflict in its horizontal transportation AGV scheduling. Results show that path conflict, the most prominent interference factor, will cause AGV scheduling to be unable to execute the original plan. Consequently, the disruption management was used to establish a disturbance recovery model, and the dijkstra algorithm for combining with time windows is adopted to plan a conflict-free path. Based on the comparison with the rescheduling method, the research obtains that the deviation of the transportation path and the deviation degree of the transportation path under the disruption management method are much lower than those of the rescheduling method. The transportation path deviation degree of the disruption management method is only 5.56%. Meanwhile, the deviation degree of the transportation path under the rescheduling method is 44.44%.

关键词： Automated Port Disruption Management Automated Guided Vehicle Scheduling dijkstra algorithm

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An algorithm to Find K Shortest Path

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International English Education Research 2014年第10期 54-57页

作者： Gangming Sun Pin Wang Department of Mathematics and Computer Science Guangxi College of Education Guangxi Nannmg China 530023

In this figure, it finds a vertex to another vertex k shortest path algorithm. Provided there are n vertices and edges in the diagram. If the path loops, the time complexity of the algorithm is allowed O（w ＋ n log 2 n ＋ kw log 2 k）. If the request path does not contain the loop, the time complexity of the algorithm O（kn（w ＋ n log2 n）＋ kw log2 k）. The algorithm utilizes a simple extension of the dijkstra algorithm determined the end of the length of the shortest path to the other vertices, and then, based on these data, branch and bound method to identify the required path. Experimental results show that the actual running time has relations with the structure of FIG.

关键词： Branch and Bound Shortest Path dijkstra algorithm Fibonacei Heap

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Decision of Assistant Mine Disasters Aid Based on 3D Roadway Model and Its Implementation by 3D GIS

Decision of Assistant Mine Disasters Aid Based on 3D Roadway...

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2009中国控制与决策会议

作者： Wu yanbin~(1,2),Huang ming~1,Liu bo~1,Cui fan~1 1.National Laboratory of Coal Resources and Mine Safety,China University of Mining and Technology,Beijing 100083 2.School of Business Administration,Hebei University of Economic and Business,Shijiazhuang 050061,China

＜正＞The dijkstra algorithm based on 3D roadway model was applied to improve efficiency in assistant mine disaster rescue and it has been implemented by 3D GIS *** 3D complex geological entity model was given emphases to,in order to effectively establish topological relations between 3D roadway network node model and stratum *** addition,the topological relation between nodes and arcs in 3D Roadway Model were *** then through applying dijkstra algorithm,fast intelligent selection of lash-up rescue routes was ***,the system structure and functions along with requirements were analyzed,and then key technologies and methods to achieve the model based on 3D GIS were expounded.

关键词： Assistant mine disasters aid decision 3D roadway model dijkstra algorithm

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The Optimal Path algorithm Analysis of GPS Navigation in Taxi Management System Based on A＊ algorithm

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International English Education Research 2013年第12期 10-12页

The optimal path algorithm analysis of GPS navigation in taxi management system based on A＊ algorithm was introduced in this paper. Through improving the traditional dijkstra algorithm and avoiding problems such as ＂time-consuming and low efficiency＂ in dijkstra algorithm with traversal search for each node, A＊ algorithm could help the taxi find the optimal path and bring convenience for traffic management.

关键词： GPS navigation A* algorithm dijkstra algorithm the optimal path

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Analysis and Decision of Optimal Path of Forest Disaster Patrol Based on Beidou Navigation

Analysis and Decision of Optimal Path of Forest Disaster Pat...

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第三十九届中国控制会议

作者： Jinyi Ma Lifu Hu Bini Pan Zhongzhi Li Yuqing Tian Chunyu Chen Department of Automation Shenyang Aerospace University Department of Computer Science Shenyang Aerospace University

In this paper, a forest data map returned by Beidou satellites is combined with classic theories such as graph theory and mathematical planning, and the dijkstra algorithm, which is the most widely used in practice, is the core to propose a forest patrol optimal path planning model. And by comparing with the Floyd path planning algorithm, the correctness and implementability of the model are verified. The experimental results show that the algorithm effectively solves the problem of optimal path decision from a patrol base to an arbitrary forest area in a certain forest, and verifies that the dijkstra algorithm can be accurately and reliably applied to the optimal path planning field of forest patrol.

关键词： Beidou navigation Optimal path planning Forest patrol dijkstra algorithm

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