Exception handling is one of the powerful means of achieving high dependability and fault-tolerance in service-oriented architecture (SOA). The paper introduces the results of experimental analysis of the SOA-specific exceptions and factors affecting availability and fault-tolerance of Web Services, implemented by use of different development kits. We discovered several types of failure domains...

Broken rotor bars in induction motors can be detected by monitoring any abnormality of the spectrum amplitudes at certain frequencies in the motor current spectrum. Broken rotor bar fault detection schemes should rely on multiple signatures in order to overcome or reduce the effect of any misinterpretation of the signatures that are obscured by factors such as measurement noises and different l...

This paper presents a software architecture for hardware fault tolerance based on loosely-synchronized, redundant virtual machines (LSRVM). LSRVM will provide high levels of reliability by tolerating hardware faults at all levels of the system. Historically, such hardware fault tolerance has only been achievable using customdesigned hardware and proprietary operating systems. Today, however, te...

This paper presents some results that were obtained in fault diagnosis for a wood-drying process. It is diffcult to detect and diagnose faults or failure in the drying process due to complex dynamic nonlinearity, coupling effects among key variables, and process disturbances caused by the variation of lumber sizes, species and environmental factors. In this paper, a real-time fault diagnosis al...

Three-Dimensional Networks-on-Chip (3D-NoC) has been presented as an auspicious solution merging the high parallelism of Network-on-Chip (NoC) interconnect paradigm with the high-performance and lower interconnect-power of 3-dimensional integration circuits. However, 3D-NoC systems are exposed to a variety of manufacturing and design factors making them vulnerable to different faults that cause...

We propose a two-phase methodology for quantifying the performability (performance + availability) of cluster-based Internet services. In the first phase, evaluators use a fault-injection infrastructure to measure the impact of faults on the server’s performance. In the second phase, evaluators use an analytical model to combine an expected fault load with measurements from the first phase to a...

The study was conducted from the perspective of human factors engineering in order to compare the process that operators originally used to diagnose potential and actual faults with a process that included an expert system for diagnosing faults. The results of the study indicated that the existence of an expert system for fault diagnosis makes the task of fault diagnosis easier and reduces erro...

This paper presents two recent hierarchical interconnection networks, the Block Shift Network (BSN) and the Hierarchical Cubic Network (HCN). Then a comparison between them has been done in terms of reliability and fault tolerance issues such as the fault diameter and the 2-terminal reliability. The comparison between them is depending on different factors such as the topological properties and...

Kurtograms have been verified to be an efficient tool in bearing fault detection and diagnosis because of their superiority in extracting transient features. However, the short-time Fourier Transform is insufficient in time-frequency analysis and kurtosis is deficient in detecting cyclic transients. Those factors weaken the performance of the original kurtogram in extracting weak fault features...

This paper presents a fault injection methodology that predicts how software will behave when com ponents of the software fail hardware components external to the software fail human factor errors occur and bad input is provided to the software and the software is executing in unlikely operational modes Because of the enterprise critical nature of many of today s software systems it is vital th...