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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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Learning Sparse Symbolic Policies for Sepsis Treatment
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Performance Portable Supernode-based Sparse Triangular Solver for Manycore Architectures.
Abstract not provided.
Performance Portable Supernode-based Sparse Triangular Solver for Manycore Architecture.
Abstract not provided.
Facility scale in-situ source localization and assay via a sparse 3He neutron detector array: enhancing nuclear material control and accounting in nuclear fuel cycle facilities
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Parameter Sensitivity Analysis of the SparTen High Performance Sparse Tensor Decomposition Software.
Abstract not provided.
Re-purposing old seismic data to calibrate nuclear test monitoring sites in sparse seismic regions, NLV-026-21,Year 1 of 2
Presentation to be presented during the Site-Directed Research and Development (SDRD) program FY 2021 review meeting (Webex), September 22–23, 2021.
An Approach to Quantify Uncertainty in Response Expansion Using Sparse Measurement Sets.
Abstract not provided.
Image Compression: Sparse Coding vs. Bottleneck Autoencoders
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Using models of cortical development based on sparse coding to discriminate between real and synthetically generated faces
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Performance-Portable Sparse Tensor Decomposition Kernels on Emerging Parallel Architectures.
Abstract not provided.
Re-Purposing Old Seismic Data to Calibrate Nuclear Test Monitoring Sites in Sparse Seismic Regions
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Re-Purposing Old Seismic Data to Calibrate Nuclear Test Monitoring Sites in Sparse Seismic Regions
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A Method of Estimating Sparse and Doubly-Dispersive Channels
The large delay and Doppler spreads of skywave high-frequency (HF) channels complicates channel acquisition, especially in low-SNR conditions. Using pilot-symbol assisted modulation, we develop a robust method to acquire channel information by first estimating the power-delay profile (PDP) of the channel, then applying that estimate to obtain the channel coefficients only where the PDP is nonzero. We find the presented approach to be robust at low-SNRs, making it suitable for spread-spectrum and underlay waveforms. We show that this two-stage channel acquisition procedure has three advantages: i),the channel is estimated with fewer terms, reducing complexity; ii), the MSE of the channel estimate is lower than assuming a fixed channel length; and iii), each propagation mode is reliably recovered in high-Doppler conditions. We conclude this paper by presenting results of the developed techniques as applied to a filter-bank multicarrier spread-spectrum (FBMC-SS) waveform.
Randomized Functional Sparse Tucker Tensor for Compression and Fast Visualization of Scientific Data.
Abstract not provided.
Sparse-view tomographic reconstruction of MagLIF emission volumes using learned basis functions.
Abstract not provided.
Sparse-view tomographic reconstruction of MagLIF emission volumes using learned basis functions.
Abstract not provided.
A Method to Expand Sparse Set Acceleration Data to Full Set Strain Data.
Abstract not provided.