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In this paper we propose cryptosystems based on subgroup distortion in hyperbolic groups. We also include concrete examples of hyperbolic groups as possible platforms.
Reliability of door system is directly related to the operation safety of railway vehicles. However, door system is with high failure rate. Accurate detection of the early-stage incipient anomalies is an urgent need in the field of railway transportation. This paper proposes an Adaptive Mean Shift Clustering (AMSC) algorithm, which can successfully detect and isolate common and frequent anomalies...
A fault detection and diagnosis (FDD) method is proposed by combining transfer entropy (TE) and signed digraph (SDG). Given process historical data, transfer entropy is used to construct a SDG model to represent causal relationship between process variables. A fault severity evaluation method is then proposed based on the modified SDG model, where the nodes can take values of (0), (±1), (±3) and (±6)...
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