The periodical transient impulses caused by localized faults are sensitive and important characteristic information for rotating machinery fault diagnosis. However, it is very difficult to accurately extract transient impulses at the incipient fault stage because the fault impulse features are rather weak and always corrupted by heavy background noise. In this paper, a new transient impulse ext...

Security-aware embedded devices which are likely to operate in hostile environments need protection against physical attacks. For the RSA public-key algorithm, protected versions of the Montgomery powering ladder have gained popularity as countermeasures for such attacks. In this paper, we present a general fault attack against RSA implementations which use the Montgomery powering ladder. In a ...

Robotic rovers which are designed to work in extra-terrestrial environments present a unique challenge in terms of the reliability and availability of systems throughout the mission. Should some fault occur, with the nearest human potentially millions of kilometres away, detection and identification of the fault must be performed solely by the robot and its subsystems. Faults in the system sens...

Reducing contamination level is of primary importance for the safety and efficiency of a MOCVD process. Off-line fault identification is one of the basic tasks that must be performed in hazard analysis to identify potential operational problems. For illustration convenience, the scope of present study is limited to the purge-gas purifier of the process. A systematic step-by-step procedure is pr...

To a given test case, fault localization has to be proceeded when its output is wrong. A novel method is presented to localize a fault. Firstly, by analyzing the relation between testing requirement and test cases that satisfying it, some assistant test cases are selected out. Then, program slice is introduced to reduce the searching domain based on priority, which has been evaluated according ...

Modeling fault behaviors such as fault occurrences and active/benign durations is an essential step to the design and evaluation of fault-tolerant controller computers. We use a beta-binomial distribution to model fault occurrences both in the presence and in the absence of environmentally-induced (thus common-cause) faults. A multinomial distribution is used to model fault active durations. Th...

With the increasing number of embedded computer systems being used in safety critical applications the testing and assessment of a system’s fault tolerance properties become a crucial issue. Experimental fault injection plays an important role in the process of fault tolerance assessment. The restricted accessibility of nodes within a chip or system-on-a-chip, however, make such experiments ext...

Fault diagnosis that predicts the most likely fault sites in a faulty chip is an important step for manufacturing yield improvement or design debugging. In this paper, we address the problem of double fault diagnosis for full-scan designs. Our algorithm aims to identify both faults accurately. The features of our algorithm include the following. (1) The proposed algorithm is not limited to any ...

The importance of tectonics and fluid flow in controlling cold seep habitats has long been appreciated at convergent margins but remains poorly understood in strike-slip systems. Here we present geophysical, geochemical, and biological data from an activemethane seep offshore fromDelMar, California, in the inner California borderlands (ICB). The location of this seep appears controlled by local...