643 datasets found
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Federal
Uncertainty Management for Diagnostics and Prognostics of Batteries using Bayesian Techniques
National Aeronautics and Space Administration —
Uncertainty management has always been the key hurdle faced by diagnostics and prognostics algorithms. A Bayesian treatment of this problem provides an elegant and... -
Federal
DATA MINING THE GALAXY ZOO MERGERS
National Aeronautics and Space Administration —
DATA MINING THE GALAXY ZOO MERGERS STEVEN BAEHR, ARUN VEDACHALAM, KIRK BORNE, AND DANIEL SPONSELLER Abstract. Collisions between pairs of galaxies... -
Federal
Third International Diagnostic Competition
National Aeronautics and Space Administration —
We present the third implementation of a framework created jointly by NASA Ames Research Center, Palo Alto Research Center, and Delft University of Technology to com-... -
Federal
HIRENASD Chimera medium-size grid
National Aeronautics and Space Administration —
Chimera medium-size grid for HIRENASD. Two files, fort.501 for grid for wing, fuselage, and 'world' zones, fort.503 for collar zone. File format is plot3d,... -
Federal
Asynchronous Mid-Value Select in Hybrid SAL
National Aeronautics and Space Administration —
The following SAL model is an abstraction of a module that implements a fault-tolerant mid-value select on asynchronously produced inputs. This is part of a larger... -
Federal
RSW hexahedral grids
National Aeronautics and Space Administration —
RSW hexahedral grids in CGNS (unstructured) and Plot3d (structured) formats generated by ANSYS Germany. Please see AePW_RSW_Grids.pptx below for full description of... -
Federal
Impact of Input Uncertainty on Failure Prognostic Algorithms: Extending the Remaining Useful Life of Nonlinear Systems
National Aeronautics and Space Administration —
This paper presents a novel set of uncertainty measures to quantify the impact of input uncertainty on nonlinear prognosis systems. A Particle Filtering-based method... -
Federal
Prognostic Health-Management System Development for Electromechanical Actuators
National Aeronautics and Space Administration —
Electro-mechanical actuators (EMAs) have been gaining increased acceptance as safety-critical actuation devices in the next generation of aircraft and spacecraft. The... -
Federal
Topic Modeling for OLAP on Multidimensional Text Databases: Topic Cube and its Applications
National Aeronautics and Space Administration —
As the amount of textual information grows explosively in various kinds of business systems, it becomes more and more desirable to analyze both structured data... -
Federal
Accelerated Aging Experiments for Prognostics of Damage Growth in Composite Materials
National Aeronautics and Space Administration —
Composite structures are gaining importance for use in the aerospace industry. Compared to metallic structures their behavior is less well understood. This lack of... -
Federal
Anomaly Detection from ASRS Databases of Textual Reports
National Aeronautics and Space Administration —
Our primary goal is to automatically analyze textual reports from the Aviation Safety Reporting System (ASRS) database to detect/discover the anomaly categories... -
Federal
Near Real-Time Fuel Optimal En Route Conflict Resolution
National Aeronautics and Space Administration —
not available -
Federal
Electrical Conductivity of Rocks and Dominant Charge Carriers: The Paradox of Thermally Activated Positive Holes
National Aeronautics and Space Administration —
In this paper we have focused on fundamental processes that are important for understanding the electrical properties of materials, both single crystal minerals and... -
Federal
Prognostics Design Solutions in Structural Health Monitoring Systems
National Aeronautics and Space Administration —
The chapter describes the application of prognostic techniques to the domain of structural health and demonstrates the efficacy of the methods using fatigue data from... -
Federal
Proposal to FAA for the "Global Analysis and Information Network" ca 1996
National Aeronautics and Space Administration —
Response to the FAA request for comments on zero accidents. The responses propose estimating the age-specific field reliability of all aircraft service parts, not... -
Federal
Health-Management Driven Control Reconfiguration Approach for Flight Vehicles
National Aeronautics and Space Administration —
A prognostic system makes it possible to anticipate loss of functionality before it occurs with sufficient lead time to take actions that mitigate the impact of this... -
Federal
Control of Holding Patterns for Increased Throughput and Recovery of Operations
National Aeronautics and Space Administration —
not available -
Federal
New Sensing Application to Diagnose Power Semiconductor Aging in Actuator Power Drive Systems
National Aeronautics and Space Administration —
This paper presents a new sensing application to diagnose power semiconductor aging in power drive systems. It has been shown previously that device parasitic...
643 datasets found