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The Vehicle routing problem of oil supply is characteristic of many constraints and complicated factors. In the paper, the Constraint Programming model of oil supply Vehicle routing problem is designed by NCL, and the heuristic arithmetic based on two phase optimization is designed by POEM. At last, the model and heuristic arithmetic are validated by an example and the satisfying result is gained.
The heterogeneous fleet vehicle routing problem with time windows is a variant of the classical vehicle routing problem. This paper defines a mathematical model of this problem and proposes a variable neighborhood tabu search algorithm to solve it. The initial solution is obtained by GENIUS and the giant tour algorithm. Our algorithm employs a variable neighborhood mechanism to search the optimal...
This paper puts forth a model of the transportation and inventory integration and optimization problem based on system and optimal theory which we take into account the antinomy relationship of transportation and inventory and the antinomy relationship of inventory and stock-out in supply chain logistics system. We consider that the resources available and the total time of inventory and transportation...
Optimization of international transport chain may significantly contribute a successful outcome of international trade. The performance of various transport mode influences its selection. This paper analyses and compares the transport chain between China and Austria, aiming to identify the best practices and choose the optimal transport mode. Based on analyzing secondary data, the different transport...
To optimize the urban public transport network, the paper systematically researches the multifactor analysis and thought about the urban public transport, proposes six binding indexes together with their threshold on the purpose of minimizing the general cost and maximizing the service, and also establishes the quantitative objective functions for the optimization of transport network on the basis...
The aircraft pushback is an important aspect of airport surface management and is one of the key factors affecting operation efficiency of apron. The problem of aircraft pushback in busy airports is studied in this paper. On the basis of the analysis on the process of aircraft pushback, the aircraft pushback procedure is designed to solve the influence of airport blind spot and the conflict of pushback...
Coal transportation from Xinjiang to the hinterland china is a strategic program to ensure energy safety. As the most important mode of coal transportation, the railways should adapt itself to the gale weather especially in Xinjiang. New approaches to the optimization of yard longitudinal section design are based on evaluating the performance in respect of construction and operation. In gale weather...
Under the analysis of the present situation of urban roads at home and abroad, the paper reviews the development of tripper guiding information system, traffic-flow distribution model and route choice model. Then it has three multi-attribute decision-making model based on the influence factors of tripper route choice and uncertainty theories, in order to analyze the decision-making process of tripper...
To optimize the urban public transport network, the paper systematically researches the multifactor analysis and thought about the urban public transport, proposes six binding indexes together with their threshold on the purpose of minimizing the general cost and maximizing the service, and also establishes the quantitative objective functions for the optimization of transport network on the basis...
For coal transportation in the shunting and winch system PID tuning is proposed adaptive genetic algorithm for parameter optimization of PID control, the adaptive line genetic algorithm combined with PID control technology, simulation achieved by shunting and winch system in the coal application, simulation results show that the online adaptive genetic algorithm for online optimization of PID parameters...
Natural or man-made disasters, such as floods, hurricanes, fires and nuclear leaks, have increased over the past 30 years. Given the potential dangers, it is wise for policy administrators to ensure that appropriate emergency plans are in place that aim to minimize the negative consequences associated with these disasters. Many emergency evacuation models are developed for this reason, including simulation-based...
A new type of monorail hanging technology was invented to solve the auxiliary transportation problem in soft rock or coal bed roadway, and clearly introduced the hanging scheme and making a feasibility analysis. This new type of monorail hanging technology makes the monorail application in soft rock or coal bed roadway to be possible, solves a major problem in mine auxiliary transportation mechanization...
According to economic ideas of Gary s. Becker, this paper builds the decision-making model of rural highway scales from the perspective of farmers under funds constraint, and gets the equilibrium condition of rural highways scales. Then with the figure analysis, the paper discusses impact mechanism of the several factors such as the financial structure of rural highway, rural urbanization, rural economic...
Most EOL electronic products come from industrial by-products and consumer goods as solid waste. Recycling the EOL electronic products is a complex and long term process. This paper focuses on the location and routing problem of electronic products recycling center. Firstly this paper applies AHP method to select the locations of electronic products recycling centers, and sort various elements by...
Vehicle routing problem is an important combinatorial optimization problem. It has an important position in logistics optimization and supply chain management theory. Due to traffic flow, traffic incidents and other factors, the travel speed and travel time of road has large time-variability and randomness in real transport network. The study of vehicle routing problem in time-dependent network has...
Because that transport links are not being considered enough in the existing decision making optimization model of manufacturers' order fulfillment, linear optimization model of manufacturers' order fulfillment is built according to factors as transporter, transport mode, type of line, model, and transportation of goods, transport origin and termination which have combined effects to transportation...
The selection of agricultural products logistics distribution center location has become an important issue that is agricultural industrialization, logistics optimization. People reasonably select the location of logistics distribution centers that helps to reduce logistics costs, improve serviced levels, reduce logistics cycle, increase logistics efficiency, so that suppliers and customers have a...
This paper studies customer's behavior in choosing services in a competitive service supply chain characterized by service congestion phenomena. Heterogenous customers choose services based on the utility maximization principle taking congestion into account. We use customer choice theory and infinite dimensional variational inequality to model the customer behavior and estimate service market share...
The voltage coupled to wayside cables is a very common EMC interface in electric transportation system, that has impact on several subsystems. The choice of the calculation method and its accuracy influences the design and its optimization. Some real cases are used as an example to identify the relevant elements and to derive some general rules to guide the choice.
When emergency occurs, a reasonable and efficient resource scheduling system is urgently needed to deal with influences caused by emergency. In regard to the scheduling problem of single one-time consumption resources in the emergency logistics system, this paper establishes a resource response decision model with the goal of minimum emergency response time, least saving points, highest reliability...
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