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Full-Text Articles in Physical Sciences and Mathematics

Corrigendum To “On High Order Finite-Difference Metric Discretizations Satisfying Gcl On Moving And Deforming Grids” [J. Comput.Phys. 265 (2014) 211–220], Björn Sjögreen, H.C. Yee, Marcel Vinokur Mar 2017

Corrigendum To “On High Order Finite-Difference Metric Discretizations Satisfying Gcl On Moving And Deforming Grids” [J. Comput.Phys. 265 (2014) 211–220], Björn Sjögreen, H.C. Yee, Marcel Vinokur

United States National Aeronautics and Space Administration: Publications

The authors regret that the already published version contains some typographic errors in the formulas for the Runge-Kutta moving metric time stepping method.


Joint Hierarchical Models For Sparsely Sampled High-Dimensional Lidar And Forest Variables, Andrew O. Finley, Sudipto Banerjee, Yuzhen Zhou, Bruce D. Cook, Chad Babcock Jan 2017

Joint Hierarchical Models For Sparsely Sampled High-Dimensional Lidar And Forest Variables, Andrew O. Finley, Sudipto Banerjee, Yuzhen Zhou, Bruce D. Cook, Chad Babcock

United States National Aeronautics and Space Administration: Publications

Recent advancements in remote sensing technology, specifically Light Detection and Ranging (LiDAR) sensors, provide the data needed to quantify forest characteristics at a fine spatial resolution over large geographic domains. From an inferential standpoint, there is interest in prediction and interpolation of the often sparsely sampled and spatially misaligned LiDAR signals and forest variables. We propose a fully process-based Bayesian hierarchical model for above ground biomass (AGB) and LiDAR signals. The processbased framework offers richness in inferential capabilities, e.g., inference on the entire underlying processes instead of estimates only at pre-specified points. Key challenges we obviate include misalignment between the …


Multi-Messenger Observations Of A Binary Neutron Star Merger, B. P. Abbott, Gregory Snow Jan 2017

Multi-Messenger Observations Of A Binary Neutron Star Merger, B. P. Abbott, Gregory Snow

Gregory Snow Publications

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40 8 8 - + Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in …