The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Availability of offshore wind turbines is known as a key element to a profitable offshore wind project. Because of the poor accessibility, maintenance of offshore wind turbines dominates the availability problem. This paper presents a mathematical model for the operational availability of offshore wind turbines considering the maintenance issue and the offshore weather conditions. The model categorizes...
The last few years have seen a great deal of work on network reliability. In practical application, the transmitting utility may be restricted by some geometric limitations, such as in 2D space, changing the direction of vehicle in 2D space, if the swerve of angle is bigger than the restriction, then vehicle will be turnover. On the other hand, in realistic problems, the change of altitude is also...
This paper applies the Importance-Satisfaction model to improve the effectiveness of the sea transportation for the Taiwanese Armed Forces as a case study. Data from experts is used to examine the military supply transportation by sea in outlying islands and we find that reliability of advertised sailing schedules and willingness to negotiate. These two items should be improved as soon as possible,...
The review of the existing transport logistics problems is considered in the paper. Fuzzy logic approach is presented for solving optimization problem, such as, assessment of the delivery quality by using decision support systems based on fuzzy logic inference engine of Mamdani-type.
To analyze the resilience of transportation networks, it is proposed to use a quantifiable resilience evaluation approach. First, we represent transportation networks by an undirected graph with the nodes as cities and edges as traffic roads. Because the survivability of transportation of a pair of cities depends on the number of passageways between them, the resilience of a city node can be evaluated...
There are many uncertainties during logistics operation. It's the best way for coping with influences of uncertainties and increasing the efficiency and effect of logistics system to maintain proper flexibility. Evaluation on flexibility of logistics system is precondition and key for building and holding the flexibility of logistics system. In this paper, the flexible indexes of three stages including...
Multi-vehicle systems composed of Autonomous Guided Vehicles (AGVs) are largely used for industrial transportation in manufacturing and logistics systems. Deployment of a team of AGVs raises management and coordination problems such as deadlock and collision avoidance, conflict resolution, and shared resources negotiation. Decentralized approaches are more suitable than centralized ones for dealing...
Evaluation of risk in emergency material reserve entrusted to other enterprises is premise and foundation of controlling risk in reserve by others. In this paper, risk of emergency material reserve entrusted to other enterprises was analyzed. Quantitive model of evaluation on risk in emergency material reserve entrusted to other enterprises was proposed. It is helpful to recognize the size of risk...
As market competition intensifies, numerous enterprises transfer auxiliary logistics functions to professional logistics service provider (LSP) in order to enhance their core competitiveness. Reasonable and practical evaluation method is premise of selecting LSP which is suitable for the enterprise. A comprehensive evaluation index system is established based on the requirements of various factors...
Supply Chain Operations Reference (SCOR) model is developed and maintained by the Supply Chain Council (SCC). The model is a reference model which can be used to map, benchmark and improve the supply chain operations. SCOR model provides companies with a basic process modeling tool, an extensive benchmark database and defines a set of supply chain metrics. Mobarakeh Steel Company (located in Isfahan,...
The belt transport with storage bins is a kind of common transport mode for loose material. Theoretically storage bin have many virtues, but in practice the whole transport system will become very complex after setting storage bin. Until recently there have been many references studying availability of storage bin transport system, Compared with some existed references, this paper presents a new practical...
Use the concept of stochastic flow network to describe transportation optimization problems upon logistic system. Select transportation reliability, transportation cost and time as objectives, build model of network flow optimization in logistic network. Take MPs as unit to build model, so model??s complexity is decreased. Use NSGA-II algorithm to solve built model and obtain the Pareto solutions...
There will be many logistics channels of agriculture products with the construction of logistics infrastructures. For agricultural product businessmen and shippers, they must synthetically consider the biologic attributes of agricultural products and the parameters of logistics channels to select the optimized logistics scheme. According to the attribute analysis of agricultural products, the influence...
In order to evaluate impact of port development on regional economy, this paper adopted fuzzy comprehensive evaluation, a combination of qualitative and quantitative methods, and established an evaluation index system which includes four main criteria: total economic output, industrial structure, relevant industries and environment. The findings reveal both positive and negative impacts of port development...
Worldwide cement consumption is currently growing with record figures and the increase of new production capacities is almost double compared to the long-term mean value. Therefore cement producers, especially from rapidly growing countries and regions with a booming construction business, are demanding cement production lines of highest capacity. The need of high capacity combined with limited space...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.