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Packet loss is a serious phenomenon in Vehicular Ad-hoc NETworks (VANETs). Although the multi-source and in-network caching characteristics of Named Data Networking (NDN) can help the consumer to retrieve named content, how to provide reliable named data transmission in vehicular environment is still a problem. To achieve the named data retransmission, previous works follow the traditional RTO algorithms...
The vast majority of researches about the shortest path algorithm, nowadays, focus just on the case starting from the beginning point and ending at the ending point. If additional condition that the shortest path must go through some given nodes of which number is uncertain must be met, then most of the existing classic algorithms are not applicable. A general method based on the Virus Co-Evolutionary...
The amount of data in financial data is enormous and mining it has a great value. For stock market, how to effectively select stocks from a reference sector is very important for investors. Based on the co-movement effect between stocks, this paper introduces a concept which is the stock's influence and constructs the influence matrix by using the time series of stocks. Then we divide the new stock...
Intelligent control of autonomous vehicles has been an important research topic due to the model uncertainties and complexities of vehicle dynamics. In this paper, we proposed an approximate dynamic programming (ADP) approach for path following control of an autonomous vehicle. The idea is to use the Dual Heuristic Programming (DHP) algorithm, which is an efficient class of ADP methods, to directly...
The paper built an urban road network model through analysis of urban traffic flow characteristics. The minimizing total travel time of vehicle in the road network was taken as control target, and the dynamic path model was built. The ant colony algorithm was used to find out the optimum path from start point to destination by collecting the real-time traffic information of the road network. Then...
Based on the Preview-Follower theory and PID control of stability, an efficient driver model for nonlinear motorcycle is established. The driver's correction parameters are derived directly from the theory. The procedure of parameters' achievement is introduced. A motorcycle multi-body model is built with Adams/view for closed-loop simulation. The results show that the driver model can effectively...
Tasks such as street mapping and security surveillance seek a route that traverses a given space to perform a function. These task functions may involve mapping the space for accurate modeling, sensing the space for unusual activity, or searching the space for an object. In many cases, the use of multiple robots can greatly improve the performance of these tasks. We assume a prior map is available,...
Due to the deficiency of logistics distribution, this paper presents a new approach to deal with VRP problems and utilizes network analysis function of GIS. Firstly, this paper specifies how to establish road network based on GIS. Secondly, this paper focuses on Vehicle Routing Problems with Time Window constraints. Finally, article based on the network analysis function of GIS, routing results on...
Advanced traffic information service system not only provide timely and accurate traffic information for traffic management personnel who can effectively adapt the traffic management control system to a variety of traffic conditions and road network capacity, but also help road users, effectively avoiding traffic jams, reducing traffic accidents. However, the existing dynamic traffic information is...
Coal is one of the main energy sources and the carriage of coals is inevitable in China. How to choose the modes between each cities is one of the key factors that decide the quality of the coal carriage. A model for that problem was formulated to be a mixed integer programming problem at first. Then, a Dynamic Programming algorithm was proposed to obtain the optimal combination strategy of transport...
As the running of traffic control system needing the road topological framework and the settlement of the traffic flow data modeling, this paper gives the conception of the traffic dynamic zones and designs the framework of the traffic dynamic zoning model. The basic measure criterions of traffic dynamic zoning are put forward, which are the saturation, the connectivity and the order degree. The rational...
The path planning problem has become the most important part in the field of the logistics to cut down the cost of the distribution. But for some special instance, for example, time and traffic jam, purely GIS canpsilat give a direct resolvent. Aiming at this problem, a new method, GROP, GIS and rules-based Optimal Path for logistics, was presented in this paper. Firstly, we institute rules for all...
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