Single address-space operating systems offer many advantages for modern systems design. We outline in this paper how such a system deals with the issues of memory protection, user-level naming, resource management, and translation management in a large, sparse address space, as well as fault tolerance and reliability. We also explain how a POSIX compliant interface can be supported on such a sy...

Automated aircraft control has traditionally been divided into distinct \functions" that are implemented separately (e.g., autopilot, autothrottle, ight management); each function has its own fault-tolerant computer system, and dependencies among di erent functions are generally limited to the exchange of sensor and control data. A by-product of this \federated" architecture is that faults are ...

Integrated System Health Management methodologies require efficient fault identification approaches to ease system reconfiguration or to adapt controllers to accommodate for the faulty behaviors. However, accurate and timely on-line fault identification of complex, nonlinear systems is difficult and can be computationally expensive. In this work, we extend the quantitative fault isolation and i...

Current inversion condition leads to incorrect operation of current based directional relay in power system with series compensated device. Application of the intelligent system for fault direction classification has been suggested in this paper. A new current directional protection scheme based on intelligent classifier is proposed for the series compensated line. The proposed classifier uses ...

In heterogeneous telecommunications networks with a variety of legacy systems of many kinds, the activity of network supervision is a di cult task and involves a large number of operators with a diversity of skills. In such environments, the time to diagnose problems and correct faults usually is high and subjected to many errors. This paper discusses these problems and some techniques and meth...

Nowadays the reliability of software is often the main goal in the software development process. Despite more and more improvements in fault preventing techniques, it is a fact that faults remain in every complex software system. In contrast to hardware-faults, no concepts or mechanisms for fault tolerance of general software-faults became widely accepted. In this paper we present a new concept...

This paper compares fault position and Monte Carlo methods as the most common methods in stochastic assessment of voltage sags. To compare their abilities, symmetrical and unsymmetrical faults with different probability distribution of fault positions along the lines are applied in a test system. The voltage sag magnitude in different nodes of test system is calculated. The problem with the...

This paper investigates the fault detection of a micro parallel plate capacitor subjected to nonlinear electrostatic force. For this end Thau observer, which has good ability in fault detection of nonlinear system has been presented and governing nonlinear dynamic equation of the capacitor has been presented. Upper and lower threshold for fault detection have been obtained. The robustness of th...