711 to 720 of 824 Results
Jan 24, 2024
Eugene Serabyn, 2024, "Detectability of Unresolved Particles in Off-Axis Digital Holographic Microscopy", https://doi.org/10.48577/jpl.ILDRVN, Applied Optics, JPL Open Repository
Off-axis digital holographic microscopy (DHM) provides both amplitude and phase images, and so may be used for label-free 3D tracking of micro- and nano-sized particles of different compositions, including biological cells, strongly absorbing particles, and strongly scattering pa... |
Jan 24, 2024
Chang Yoo, 2024, "Probing THz Intersubband Absoprtion using Johnson Noise Thermometry", https://doi.org/10.48577/jpl.XOKWQS, Nanophotonics, JPL Open Repository
We investigate the THz intersubband absorption behavior of a single 40-nm wide GaAs/AlGaAs square quantum well (QW) using Johnson noise thermometry. In our measurements, the Johnson noise associated with intersubband absorption is measured from the in-plane conduction channel of... |
Jan 24, 2024
Josette Bellan, 2024, "A Volume-Averaged Hyperbolic System of Governing Equations for Granular Flow Modeling with Phase Change", https://doi.org/10.48577/jpl.YCCDA0, International Journal of Multiphase Flow, JPL Open Repository
Typical granular flow simulations are based upon governing equations developed by local volume-averaging of flow properties, and then discretizing and solving the equations using numerical schemes. The formulation presented herein uses the basics of volume-averaging to derive a h... |
Jan 24, 2024
Cameron Haag, 2024, "Micro-thruster ACS Architecture for Precision Pointing of 6-meter Exo-Earth Imaging Space Telescope", https://doi.org/10.48577/jpl.RR77EM, 2024 AAS Guidance, Navigation and Control Conference, JPL Open Repository
The ambitious science goals of the Astro2020 Decadal Survey to conduct direct imagery and spectroscopy of Earth-like exo-planets will dictate a stringent pointing stability requirement for the Habitable Worlds Observatory (HWO). Sufficient starlight suppression is achieved throug... |
Jan 24, 2024
Thomas Logan, 2024, "Planetary Orbital Mapping and Mosaicking (POMM) Integrated Open Source Software Environment", https://doi.org/10.48577/jpl.VYLJPG, Journal of Photogrammetry and Remote Sensing, JPL Open Repository
Several Open Source planetary orbital mapping and utility image processing software packages, including, VICAR, AFIDS, ISIS, GDAL, and GeoTIFF, have been integrated into a single software environment (POMM), where package programs can be run independently from a Linux command lin... |
Jan 23, 2024
Emma Dahl, 2024, "Atmospheric Science Questions for a Uranian Probe", https://doi.org/10.48577/jpl.NILN0C, Space Science Reviews, JPL Open Repository
Overall, there is currently a great deal of community support for the UOP, highlighted by the number of recently-developed white papers, meeting abstracts, and peer-reviewed works outlining the benefits and possible mechanics of such a mission. Uranus occupies a unique parameter... |
Jan 23, 2024
Margaret Johnson, 2024, "Modelling wildland fire burn severity in California using a spatial super learner approach", https://doi.org/10.48577/jpl.6HVRGS, Environmental and Ecological Statistics, JPL Open Repository
Given the increasing prevalence of wildland fires in the Western US, there is a critical need to develop tools to understand and accurately predict burn severity. We develop a novel machine learning model to predict post-fire burn severity using pre-fire remotely sensed data. Hyd... |
Jan 23, 2024
Eric Tardiff, 2024, "Next Generation High Stability, Long-Life Mercury Ion Clocks for Ground and Space Applications", https://doi.org/10.48577/jpl.JDWEPV, Precise Time and Time Interval Meeting, JPL Open Repository
No abstract available. |
Jan 23, 2024
Jamie McKelvy, 2024, "A Machine Learning Approach for Hydrogen Maser Frequency Stability Evaluation", https://doi.org/10.48577/jpl.2DKQA9, Precise Time and Time Intervals (PTTI), JPL Open Repository
In this work, we present a novel method of using auxiliary telemetry data and machine learning to predict the frequency stability regime of an active hydrogen maser. Assessing variations in the frequency stability of a precision frequency standard traditionally requires the simul... |
Jan 23, 2024
Jamie McKelvy, 2024, "A Machine Learning Approach for Hydrogen Maser Frequency Stability Evaluation", https://doi.org/10.48577/jpl.BONOBL, Precise Time and Time Interval (PTTI) 2024, JPL Open Repository
No abstract available. |
