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Marine oil spill is an inevitable and undesirable consequence of producing and transporting petroleum, as well as the associated refined products. To reduce oil spill pollution, China has made many great achievements to develop adequate pollution contingency plans for several years. During the oil spill response, it is important to understand the behavior and fate of spilled oil in the forecasting...
In the past few years, big data has attracted significant attention, and many analytics platforms, such as Hadoop, have been developed to enable the analysis of massive data. Nevertheless, it is still very challenging to provision, let alone optimize, a comprehensive system that includes various aspects, from the computing infrastructure to the analytics programs. To tackle this challenge, in this...
A novel analysis method for systems engineering based on wargaming technology is proposed. First, the essential factors and procedures of wargaming are introduced. Then, the systems engineering method based on wargaming is analyzed. At last, the systems modeling, simulating, and analyzing procedure is described in details by illustrating a living example. The characteristics and advantages of this...
Peer-to-peer (P2P) networks have attracted more and more attentions in recent years. The access control model is very important for network environment especially for the dynamic networks such as P2P networks. In this paper, a novel time-sensitive access control was proposed for the P2P networks. Firstly, the time point and time span described by the OCL (object constraint language) was introduced...
In this paper, a novel peer-to-peer (P2P) neighbor selection mechanism was proposed to enhance the efficiency of the file sharing process in P2P networks. In the mechanism, a modified and well-designed neighbor peer selection approach was introduced, which selects the neighbor peer based on the weighted value it holds. The weighted value includes several factors, such as the trust value, the number...
This work presents an extended belief network model to deal with the problem of searching for scientific document. The original belief network model is extended by combine reference evidence. An algorithm is introduced to compute the two metrics: worth and concern which are used to measure the important degree of scientific document based on the reference evidence. We discuss a strategy of the extended...
This paper presents a kind of visualization model for electromagnetic signals according to battle actualities and tactics needs. In modern battles, complex electromagnetic environment is difficult to control as its invisibility and variety. According with the requirement of tactics application, the proposed model provides a new way to simulate electromagnetic environment for acquiring information...
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