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Online social networks (OSNs) suffer from the creation of fake accounts that introduce fake product reviews, malware and spam. Existing defenses focus on using the social graph structure to isolate fakes. However, our work shows that Sybils could befriend a large number of real users, invalidating the assumption behind social-graph-based detection. In this paper, we present VoteTrust, a scalable defense...
Combined with the Java language features, the paper proposed project-driven teaching model, and in-depth study of the mode of teaching the design principles and teaching of design and implementation. The evaluation of teaching in project-driven mode of teaching effectiveness achieved. Java language is very popular object-oriented programming languages. Because of its many features are widely used...
To get the physics out of the data, GlueX relies entirely on an amplitude-based analysisâ"PWA(Partial Wave Analysis). We build a grid test platform to verify how computational and data grid can be used to process large scale dataset in PWA, and make PWA toolkit to be grid-enable. The work we did has demonstrated that grid is a promising computing architecture for PWA in GlueX project. We setup...
The design problems of localization algorithm, distribution density estimation and node's moving path for data collection in multi-layers mobile wireless senor network are investigated. To ensure estimating accurately the node density, this paper proposes a new movement control strategy for fusion nodes based on probabilistic coverage model. This method completed the unknown node localization through...
MapReduce is an important programming model for large-scale data-intensive applications such as web indexing, scientific simulation, and data mining. Hadoop is an open-source implementation of MapReduce enjoying wide adoption. Partition function is an important component of Hadoop which split outputs of maps into bulks that place the input data of reduces. Based on the assumptions that cluster nodes...
Based on the background of multi-rope friction hoisting transport system and the factual loading of hoisting skip as the object monitored, a practical and economic monitoring system scheme has been put forward, which is not only capable of monitoring the factual loading of hoisting skip but also can detect the quantity of unloaded coal left in hoisting skip after the process of unloading expediently,...
Piezoelectric ultrasonic transducer is the transducer which is technically designed for electrical measurement of non-medical electrical capacity, some physiology parameters of human body like blood pressure, pulse, breathe, body temperature, and etc. are non-electrical capacity. In order to measure these physiological parameters, the simplest way is to change them for the project is technically easier...
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