Anomaly Detection in Aviation Data using Extreme Learning Machines

A Publication, Fast anomaly detection - 9 years, 8 months ago

Shared By: Vijay Manikandan Janakiraman

We develop fast anomaly detection algorithms using extreme learning machines (ELM) to discover operationally significant anomalies in large aviation data sets. Anomaly detection (aka one-class ...

Bayesian model selection and parameter estimation for fatigue damage progression models in composites

A Publication, Prognostics CoE Publications - 10 years, 1 month ago

Shared By: Kai Goebel

A Bayesian approach is presented for selecting the most probable model class among a set of damage mechanics models for fatigue damage progression in composites. ...

An Energy-based Prognostic Framework to Predict Evolution of Damage

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Kai Goebel

Real-time measurements of the structural performance are now possible through state-of-the-art structural health monitoring (SHM) techniques, and a large amount of response data can be ...

Assisted design, implementation, and modification of procedure tracking and advisory systems

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

Automated procedure tracking systems have been of interest in the nuclear power industry due to the huge numbers of documented procedures required for the operation ...

A Diagnosis System Using Object-Oriented Fault Tree Models

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

Spaceborne computing systems must provide reliable, continuous operation for extended periods. Due to weight, power, and volume constraints, these systems must manage resources very effectively. ...

An integrated approach to system design, reliability, and diagnosis

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

The requirement for ultradependability of computer systems in future avionics and space applications necessitates a top-down, integrated systems ingeneering approach for design, implementation, testing, and ...

Object-oriented fault tree models applied to system diagnosis

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

When a diagnosis system is used in a dynamic environment, such as the distributed computer system planned for use on Space Station Freedom, it must ...

An integrated approach to system design, reliability, and diagnosis

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

Two tools for engineering analyses of highly reliable systems, one for quantitative reliability evaluation and the other for fault diagnosis, have been developed based on ...

Automatic translation of digraph to fault-tree models

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

The author presents a technique for converting digraph models, including those models containing cycles, to a fault-tree format. A computer program which automatically performs this ...

Digraph reliability model processing advances and applications

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

This paper describes a new algorithm, called SourceDoubls, which efficiently solves for singletons and doubletons of a digraph reliability model. Compared with previous methods, the ...

Digraphs and fault trees: a tale of two combinatorial modeling methods

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

The authors illustrate the similarities and differences of digraph and AND-OR fault tree models and discuss their use together in light of the strengths of ...

Program Finds Minimal Cut Sets

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

CUTSETS computer program identifies all minimal cut sets for given node. Software package contains subprograms that solve for minimal cut sets of fault trees and ...

Advances in digraph model processing applied to automated monitoring and diagnosis

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

Reliability models contain a great deal of information about the modeled system that can be used for automated diagnosis of the system. Using such a ...

Automated Telescope Monitoring and Diagnosis

A Publication, DAVID IVERSON's Collection - 10 years, 4 months ago

Shared By: DAVID IVERSON

This paper discusses automated telescope monitoring and diagnosis work currently being performed at NASA Ames Research Center in cooperation with AutoScope Corporation. Topics addressed include ...