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Federal
Probabilistic Fault Diagnosis in Electrical Power Systems
National Aeronautics and Space Administration —
Electrical power systems play a critical role in spacecraft and aircraft. This paper discusses our development of a diagnostic capability for an electrical power... -
Federal
Effects of Lightning Injection on Power-MOSFETs
National Aeronautics and Space Administration —
Lightning induced damage is one of the major concerns in aircraft health monitoring. Such short-duration high voltages can cause significant damage to electronic... -
Federal
nu-Anomica: A Fast Support Vector Based Anomaly Detection Technique
National Aeronautics and Space Administration —
In this paper we propose $\nu$-Anomica, a novel anomaly detection technique that can be trained on huge data sets with much reduced running time compared to the... -
Federal
DXC'09 Framework
National Aeronautics and Space Administration —
The DXC Framework is a collection of programs and APIs for running and evaluating diagnostic algorithms (DAs). It is complementary to system XML catalogs and... -
Federal
A Comparison of Three Data-driven Techniques for Prognostics
National Aeronautics and Space Administration —
In situations where the cost/benefit analysis of using physics-based damage propagation algorithms is not favorable and when sufficient test data are available that... -
Federal
Aircraft Proximity Maps Based on Data-Driven Flow Modeling
National Aeronautics and Space Administration —
With the forecast increase in air traffic demand over the next decades, it is imperative to develop tools to provide traffic flow managers with the information... -
Federal
An Approach to Prognostic Decision Making in the Aerospace Domain
National Aeronautics and Space Administration —
The field of Prognostic Health Management (PHM) has been undergoing rapid growth in recent years, with development of increasingly sophisticated techniques for... -
Federal
A Model-based Avionic Prognostic Reasoner (MAPR)
National Aeronautics and Space Administration —
The Model-based Avionic Prognostic Reasoner (MAPR) presented in this paper is an innovative solution for non-intrusively monitoring the state of health (SoH) and... -
Federal
Using Decision Trees to Detect and Isolate Leaks in the J-2X
National Aeronautics and Space Administration —
Full title: Using Decision Trees to Detect and Isolate Simulated Leaks in the J-2X Rocket Engine Mark Schwabacher, NASA Ames Research Center Robert Aguilar, Pratt... -
Federal
Prognostics of Power Electronics, methods and validation testbeds
National Aeronautics and Space Administration —
An overview of the current results of prognostics for DC- DC power converters is presented, focusing on the output filter capacitor component. The electrolytic... -
Federal
Modeling SiO2 Ion Impurities Aging in Insulated Gate Power Devices Under Temperature and Voltage Stress
National Aeronautics and Space Administration —
This paper presents a formal computational methodology to explain how the oxide in semiconductors degrades over time and the dependence of oxide degradation on... -
Federal
Modeling of Activities as Fuzzy Temporal Multivariable Problems
National Aeronautics and Space Administration —
Smart Home resident may be an Alzheimer patient needing continuous assistance and care giving. Because of forgetfulness, this person may realize activities of daily... -
Federal
Tracking Logistical Constraints Across Missions and Organizations: A Multipurpose Information Infrastructure
National Aeronautics and Space Administration —
execute plans and schedules that achieve stated goals while simultaneously minimizing the cost of logistics management and maximizing resource productivity. This goal... -
Federal
2010_09_10_position_dead
National Aeronautics and Space Administration —
Scenarios with a non-functioning position sensor fault (diagnostic) -
Federal
Efficient Matlab Programs
National Aeronautics and Space Administration —
Matlab has a reputation for running slowly. Here are some pointers on how to speed computations, to an often unexpected degree. Subjects currently covered: Matrix... -
Federal
Distributed Monitoring of the R2 Statistic for Linear Regression
National Aeronautics and Space Administration —
The problem of monitoring a multivariate linear regression model is relevant in studying the evolving relationship between a set of input variables (features) and one... -
Federal
Qualitative Event-based Diagnosis with Possible Conflicts: Case Study on the Third International Diagnostic Competition
National Aeronautics and Space Administration —
We describe two model-based diagnosis algo- rithms entered into the Third International Diag- nostic Competition. We focus on the first diag- nostic problem of the... -
Federal
Connecting Microscale And Macroscale Damage Models In A Bayesian Framework for Fatigue Damage Prognostics Of CFRP Composites
National Aeronautics and Space Administration —
Composites offer unique advantages for aerospace structures and are increasingly being adopted into newer designs. However, it is also acknowledged that given current... -
Federal
Key Real-World Applications of Classifier Ensembles
National Aeronautics and Space Administration —
Broad classes of statistical classification algorithms have beendeveloped and applied successfully to a wide range of real worlddomains. In general, ensuring that the... -
Federal
Estimation and Bias Correction of Aerosol Abundance using Data-driven Machine Learning and Remote Sensing
National Aeronautics and Space Administration —
Abstract—Air quality information is increasingly becoming a public health concern, since some of the aerosol particles pose harmful effects to peoples health. One...