When we apply safety analysis techniques on a new design, our primary objective is to anticipate potential scenarios of failure in the system under examination. If we assume that the system has a complex hierarchical structure, this task can be interpreted as one of identifying how failures originate at the low-levels of the design and how combinations or sequences of such low-level failures pr...

The paper is concerned with the study of criticality analysis of components of Gas Turbine Power Plant Systems (GTPPS) and the failures occurring in the plant. Failure mode and effect and criticality analysis (FMECA) is carried out to estimate the criticality number for different components and failure modes. In addition the failure effects, higher effects and end effects are incorporated in th...

over a seven year period from 1982 to 1989,3337 conduits were created in 3137 patients with end stage renal disease (esrd) as access for chronic dialysis. these included 2690 side-to-side arteriovenous fistulae (a vf), 168 end-to-side a vfs, 10 autogenous vein grafts, 51 homogenous frozen vein grafts, 109 polytetrafluoroethylene (ptfe) grafts, 209 emergency external arteriovenous shunts, three ...

Title: A Study of Software Input Failure Propagation Mechanisms Yuan Wei, Doctor of Philosophy, 2006 Directed By: Associate Professor Carol Smidts Department of Mechanical Engineering Probabilistic Risk Assessment (PRA) is a well-established technique to assess the probability of failure or success of a system. Classical PRA does not consider the contributions of software to risk. Dr. B. Li and...

The paper deals with failures of capitalism or free market and presents the results of economic analysis by applying a logistic capital growth model. The application of a logistic growth model for analysis of economic bubbles reveals the fundamental causes of bubble formation—economic paradoxes related with phenomena of saturated markets: the paradox of growing returnability and the paradoxes o...

Large-scale distributed systems are prone to frequent failures, which could be caused by a variety of factors related to network, hardware, and software problems. Any downtime due to failures, whatever the cause, can lead to large disruptions and huge losses. Identifying the location and cause of a failure is critical for the reliability and availability of such systems. However, identifying th...

Knowledge about failures and failure propagation paths in early design can benefit Prognostics and Health Management (PHM) system development by identifying expected system failures, determining adequate system monitoring, and improving system reliability through hardware configurational changes. Function-based failure analysis provides a means for early system representation that can provide m...

Several reliability engineering approaches have been proposed to identify and recover from failures. A well-known and mature approach is the Failure Mode and Effect Analysis (FMEA) method that is usually utilized together with Fault Tree Analysis (FTA) to analyze and diagnose the causes of failures. Unfortunately, both approaches seem to have primarily focused on failures of hardware components...

The validity of previous human factors data may be called into question when technology changes rapidly or new and radical designs are introduced as with the advent of unmanned aircraft systems (UASs). The purpose of this study was to analyze the role and pattern of active and latent human failures in USAF MQ-1 Predator UAS mishaps using the Human Factors Analysis and Classification System. A m...