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Terrain factors may have significant impacts on the dynamic characteristics of mobile nodes, especially in tactical MANET. However, most of the existing mobility models are probability models, which do not catch real tactical feature behaviors such as random disturbance and bypass processes. In this work, we establish a formalized process model to imitate the impact of small-scale terrain factors...
With the continual improvement of the hardware reliability technique, there are fewer accidents caused directly by mechanical failure and more impacts of human factors on enterprises' safety production system. The research on influence factors on hidden dangers of safety production behavior is needed urgently in China's new organizational circumstances to enhance timeliness and accuracy of analyses...
A considerable amount of research on distributed hash table (DHT) based mobility support schemes, which are highly user scalable and load balanced, has been done. However these schemes have shortcomings in query performances and network scalability. It is because although routing of overlay itself is effective, there is inconsistency between logical and physical topologies, so the actual physical...
Most simulation models for data communication networks encompass hundreds of parameters that can each take on millions of values. Such models are difficult to understand, parameterize and investigate. This paper explains how to model a modern data communication network concisely, using only 20 parameters. Further, the paper demonstrates how this concise model supports efficient design of simulation...
In the next generation of wireless mobile communications, it can be visualized that heterogeneous networks including 3G cellular networks and WLAN are demanded to co-operate user-friendly in a seamless manner. Based on mobility of users, optimal session admission control for multimedia services is very important for improving performance in integrated 3G/WLAN networks. In this paper, a new dynamic...
Soil erosion prediction information system is a powerful tool to analyze and process the information of soil erosion and quantitatively forecast erosion. The logical structure and function of Daqinghe Basin soil erosion prediction information system were discussed by comprehensive analysis of system requirements based on a variety of spatial scales in Daqinghe Basin, which will lay the foundation...
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