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Using a centralized controller for resource management and coordination is a common practice in cloud services. For scalability concern, in recent literature a novel approach, namely devolved controllers, was proposed. Such approach splits the network into regions, while each controller only monitors a portion of the traffic. This technique alleviates scalability issue, but brings other critical problems,...
In wireless sensor networks, barrier coverage is a fundamental category of coverage problems and its surveillance capability can be reinforced when utilizing camera sensors. In this paper, we propose a distributed algorithm to solve the problem of Full-View Barrier Coverage with rotatable camera sensors (FBR). Our goal is to minimize the active sensor number when guaranteeing the surveillance capabilities...
Currently, Thinking Maps(TM) which includes eight kinds of sub graphs, has been a set of popular visual tools for learners to achieve the tasks of inductive and deductive thinking, dialogical thinking, metaphorical thinking and systemic dynamic thinking. But many of the researches focus on building these sub graphs manually. In this paper, after analyzing the features of e-Learners' behaviors, a method...
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