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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Discovery of Correlated Electron Molecular Orbital Materials using Graph Representations
Preprint of manuscript describing database & physical properties of correlated electron molecular orbital materials.
Risk-aware graph search with dynamic edge cost discovery
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Metric-Constrained Optimization for Graph Clustering Algorithms
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Detection of a signal on a paper chromato- graph
Conductivity changes for thin layer chromatograph separation detection
Flow graph transformation external publication no. 369
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Tool reconstructs data input points corresponding to first order output graph
Tool aids in graphic determination of input values for any first order lag system of known gain and time constant where the corresponding output function is displayed graphically and can be described by a first order differential equation. This tool permits a rapid reconstruction of input points.
Tables and graphs of functions necessary for solving nonlinear heat transfer constant area fin problems with examples on their use
Graphical reprensentation of nonlinear heat transfer functions for constant area fin problem
Application of unilateral and graph techniques to analysis of linear circuits.
Algorithms for linear system of first order differential equations, emphasizing equations associated with computer oriented circuit design
The fully indecomposable matrix and its associated bipartite graph - An investigation of combinatorial and structural properties
Combinatorial properties of classes of nonnegative matrices
Electrical network analysis of socio-economic systems utilizing graph theory
Computer program for analyzing New Hampshire highway traffic flow by using models
On a programming language for graph algorithms
Computer language for implementation of graphic theoretical algorithms
Semantic definitions of spacecraft command and control languages using hierarchical graphs
(Previously cited in issue 01, p. 123, Accession no. A82-10112)
Wiring Viterbi decoders (splitting deBruijn graphs)
A new Viterbi decoder, capable of decoding convolutional codes with constraint lengths up to 15, is under development for the Deep Space Network (DSN). A key feature of this decoder is a two-level partitioning of the Viterbi state diagram into identical subgraphs. The larger subgraphs correspond to circuit boards, while the smaller subgraphs correspond to Very Large Scale Integration (VLSI) chips. The full decoder is built from identical boards, which in turn are built from identical chips. The resulting system is modular and hierarchical. The decoder is easy to implement, test, and repair because it uses a single VLSI chip design and a single board design. The partitioning is completely general in the sense that an appropriate number of boards or chips may be wired together to implement a Viterbi decoder of any size greater than or equal to the size of the module.
View graphs for GSFC Colloquium on OFMspert
Viewgraphs providing an overview of activities concerned with the development and testing of the Operator Function Model (OFM) expert system (OFMspert) are presented. The OFM is a mathematical tool for representing operator interaction with predominantly automated space ground control systems. OFM provides cognitive task analysis and served as the basis for the design of an intelligent operator's associate called OMFspert. An experimental implementation of OFMspert, referred to as Ally, was developed. An empirical evaluation of Ally was conducted to determine the effectiveness of a supervisory control team consisting of a human operator and Ally versus a control team consisting of two human operators. The experiment was carried out in the GT-MSOCC (Georgia Tech MultiSatellite Operations Control Center) domain, a research tool consisting of a high fidelity implementation of the operator interface to a GSFC ground control system. The viewgraphs outline the experimental design, operator performance measures, and preliminary results.
Stress-strain and elongation graphs for aluminum alloy R301 sheet
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Stress-strain and elongation graphs for Alclad aluminum-alloy 75S-T sheet
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Stress-strain and elongation graphs for Alclad aluminum-alloy 24S-T sheet
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