cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.pne4bb
title: A Sub-THz CMOS Molecular Clock with 20 ppt Stability at 10,000 s Based on A Dual-Loop Spectroscopic Detection and Digital Frequency Error Integration

description: This paper presents a dual-loop chip-scale molecular clock (CSMC), which enhances the Allan Deviation performance by combining high signal-to-noise ratio of using fundamental mode and long-term stability of using higher order modes in derivative molecular absorption spectroscopy. In addition, digital frequency-error integration is adopted in the frequency-locked loop to provide an infinite open-loop DC gain, which fully suppresses any frequency drift caused by the temperature-sensitive crystal oscillator. This new generation CSMC is implemented in 65-nm CMOS, and achieves 20 ppt (part-per-trillion) Allan Deviation at 10,000 s averaging time with 71-mW power consumption
DOI: 10.15468/dl.4uruc2
title: Occurrence Download

description: A dataset containing 265 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Phataria unifascialis (Gray, 1840)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 265 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001449-160822134323880/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.qtcht7
title: Deflection Driven Evolution of Asteroid Impact Risk Under Large Uncertainties

description: The threat of asteroid impacts on the Earth can be mitigated through de- ection missions. The de ection capability has previously been omitted in asteroid impact risk analysis work that quanties impact damage on the Earth. Here we investigate the eect of pre-designed de ection missions on the risk prole of the ctitious impact scenario 2019 PDC. The impact risk analysis is based on a statistical approach. We sample orbital and physical property distributions that provide a complete representation of possible impact scenarios. Three pre-designed kinetic impactor de ection missions are considered in separate simulations. The de ection mission imposes a de ection V on the asteroid and the impulse enhancement factor is cal- culated as part of the analysis. The post-de ection impact risk is compared to the unde ected risk situation. Variations in physical and orbital proper- ties make the outcome of de ection missions uncertain. It can therefore be inadequate to label de ection mission outcomes in binary terms of success and failure. Instead, dening a satisfactory risk reduction goal and scal- ing the de ection mission capability to deliver this risk reduction is more accurate. In addition, the results highlight dilemmas that decision-makers would face in an asteroid threat scenario. By implementing a de ection mission, the potential impact point of the asteroid is moved, threatening new populations and potentially increasing damage in case of an impact.
DOI: 10.25549/independent-c69-5321
title: Proceedings of the National Conference on Criminal Justice, 1973

description: National Advisory Commission on Criminal Justice Standards and Goals. Proceedings of the National Conference on Criminal Justice. Washington, DC: U.S. Government Printing Office, 1973.
DOI: 10.48577/jpl.iyd0bo
title: Planetary Protection Implementation of the InSight Mission Launch Vehicle and Associated Ground Support Hardware

description: The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) Mars mission launched from Vandenberg Air Force Base on an Atlas V 401 rocket on May 5, 2018. Prior to launch, the InSight spacecraft, associated launch vehicle hardware, and ground support equipment were required to satisfy Planetary Protection requirements to comply with international treaty obligations and demonstrate compliance with National Aeronautics and Space Administration (NASA) levied bioburden requirements. InSight was the first bioburden-controlled mission to launch from Vandenberg Air Force Base and required mission unique policies and procedures to ensure Planetary Protection requirements were satisfied. All of the launch vehicle hardware and associated ground support equipment with direct contact or line of sight to flight hardware were required to demonstrate a bioburden density of less than 1,000 spores/m2. Additionally, the environmental control system air ducts were required to demonstrate more stringent bioburden limits on internal duct surfaces (&lt;100 spore/m2) and on air passing through the ducts (88 colony forming units/m3). Although conservative approaches were used with the data analysis and launch recontamination analysis, InSight, the launch vehicle hardware, and ground support equipment were able to demonstrate compliance with the Planetary Protection requirements needed for launch approval. Here we detail the biological practices implemented on the launch vehicle hardware and ground support equipment that resulted in biologically clean hardware and the satisfaction of Planetary Protection.
DOI: 10.48577/jpl.d6pser
title: The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science case, survey design and initial results

description: No abstract available.
DOI: 10.15468/dl.8dgdzj
title: Occurrence Download

description: A dataset containing 614 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Brachionidium Lindl."
 ]
}

 The dataset includes 614 records from 50 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001449-171020152545675/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.h84g5c
title: Occurrence Download

description: A dataset containing 371 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium schoeninum Lindl."
 ]
}

 The dataset includes 371 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170200-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.nqf44s
title: An ensemble Kalman filter data assimilation system for the whole neutral atmosphere

description: A data assimilation system with a four-dimensional local ensemble transform Kalman filter (4D-LETKF) is developed to make a new analysis data set for the atmosphere up to the lower thermosphere using the Japanese Atmospherics General Circulation model for Upper Atmosphere 10 Research. The time period from 10 January 2017 to 20 February 2017, when an international radar network observation campaign was performed, is focused on. The model resolution is T42L124 which can resolve phenomena at synoptic and larger scales. A conventional observation dataset provided by National Centers for Environmental Prediction, PREPBUFR, and satellite temperature data from the Aura Microwave Limb Sounder (MLS) for the stratosphere and mesosphere are assimilated. First, the 15 performance of the forecast model is improved by modifying the vertical profile of the horizontal diffusion coefficient and modifying the source intensity in the non-orographic gravity wave parameterization, by comparing it with radar wind observations in the mesosphere. Second, the MLS observational bias is estimated as a function of the month and latitude and removed before the data assimilation. Third, data assimilation parameters, such as the degree of gross error check, localization 20 length, inflation factor, and assimilation window are optimized based on a series of sensitivity tests. The effect of increasing the ensemble member size is also examined. The obtained global data are evaluated by comparison with the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2) reanalysis data covering pressure levels up to 0.1 hPa and by the radar mesospheric observations which are not assimilated.
DOI: 10.25549/independent-c69-46425
title: Reports (3 of 3) - A review of administrative processes of the Tampa Police Department by the Police Foundation, 1987 Mar. 3 - 1990 Oct. 20

description: Reports - A Review of Administrative Processes of the Tampa Police Department by the Police Foundation, 1987 March 3 - 1990 October 20.
DOI: 10.48577/jpl.vqlpty
title: Lifting and transport of Martian dust by the Ingenuity helicopter rotor downwash as observed by high-speed imaging from the Perseverance rover

description: Martian atmospheric dust is a major driver of weather, with feedbacks betweenatmospheric dust distribution, circulation changes from radiative heating and cooling driven bythis dust, and winds that mobilize surface dust and distribute it in the atmosphere. Wind-drivenmobilization of surface dust is a poorly understood process due to significant uncertainty aboutminimum wind stress, and whether saltation of sand particles is required. This study utilizesvideo of six Ingenuity helicopter flights to measure dust lifting during helicopter ascents,traverses, and descents. Dust mobilization persisted on take-off until the helicopter exceeded 3 maltitude, with dust advecting at 4-6 m/s. During landing, dust mobilization initiated at 2.3-3.6 maltitude. Extensive dust mobilization occurred during traverses at 5.1-5.7 m altitude. Dustmobilization threshold friction velocity of rotor-induced winds during landing are modelled at0.4-0.6 m/s (factor of two uncertainty in this estimate), with higher winds required when thehelicopter was over undisturbed terrain. Modeling dust mobilization from &gt;5 m cruising altitudeindicates mobilization by 0.3 m/s winds, suggesting non-saltation mechanisms like mobilizationand destruction of dust aggregates. No dependence on background winds was seen for theinitiation of dust lifting, but one case of takeoff in 7 m/s winds created a track of darkened terraindownwind of the helicopter, which may have been a saltation cluster. When the helicopter wascruising at 5-6 m altitude, recirculation was seen in the dust clouds.
DOI: 10.48577/jpl.sehszv
title: Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey: Report of a Community Workshop Examining Extragalactic, Galactic, Stellar and Planetary Science

description: No abstract available.
DOI: 10.15468/dl.jqblc1
title: Occurrence Download

description: A dataset containing 30531 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Orchis mascula (L.) L., 1755"
 ]
}

 The dataset includes 30531 records from 83 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001449-171025204727650/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-46423
title: Reports (3 of 3) - A review of administrative processes of the Tampa Police Department by the Police Foundation, 1987 Mar. 3 - 1990 Oct. 20

description: Reports - A Review of Administrative Processes of the Tampa Police Department by the Police Foundation, 1987 March 3 - 1990 October 20.
DOI: 10.48577/jpl.lqn1yg
title: SN 1987A: CONSTRAINING THE HARD X-RAY CONTINUUM AND ITS EVOLUTION WITH NUSTAR

description: NuSTAR observed SN1987A multiple times from July 2012 to August 2014 with a total exposure of 2.7 Ms. These observations allowed the determination of the hard X-ray emission from the remnant up to ∼ 25 keV. The continuum spectrum between 3 and 25 keV can be equally well described by several two-component models: two plane shocks, a plane shock with a power law, or a plane shock with a single rolling-off synchrotron component. We argue that the most plausible is a plane shock with a power-law, and that the power law represents synchrotron X-ray emission from an electron population with energies up to tens of TeV. This interpretation requires that the shock responsible for accelerating these electrons be modified by cosmic-ray pressure to produce the observed concave-up spectrum from radio to X-rays, and to explain the high magnetic field that this interpretation requires. The observed iron line implies an iron abundance of ∼ 0.9 solar, about twice the typical LMC abundances, suggesting that the thermal emission comes from reverse-shocked ejecta. A purely thermal description would require a hot component with kT ∼ 6 keV. We detect a slight increase of the flux from 2012 to 2014 in the medium X-ray range (3 – 8 keV) as well as in the hard X-range (8 – 20 keV). The rate of increase we find between 3 and 8 keV is somewhat slower than that found earlier, with an e-folding time of about 5000 days, comparable to that in the 8 – 20 keV band. We discuss the significance of these findings for the evolution of very young supernova remnants.
DOI: 10.15468/dl.k468t2
title: Occurrence Download

description: A dataset containing 7 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium schuetzei Rolfe"
 ]
}

 The dataset includes 7 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170203-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.tjsrqc
title: Using Daily Observations from Planet Labs Satellite Imagery to Separate the Surface Deformation Between the July 4th Mw 6.4 Foreshock and July 5th Mw 7.1 Mainshock During the 2019 Ridgecrest Earthquake Sequence.

description: On July 4th 2019 the Ridgecrest earthquake sequence began with a series of foreshocks including a Mw 6.4 event near Searles Valley, California. This was then followed 34 hours later by a Mw 7.1 mainshock located just 15 km to the north, with the earthquake sequence resulting in a complex array of intersecting faults. This earthquake sequence poses several interesting questions including, did the stress changes induced by the Mw 6.4 foreshock trigger the Mw 7.1 mainshock and what possible mechanism(s) could explain the occurrence of widespread secondary faulting surrounding both surface ruptures? However, most of the geodetic data (such as InSAR, lidar and optical satellite imagery), were acquired after both events had occurred making it difficult to discern which surface fractures happened when and their possible triggering mechanism. Here we provide a dataset composed of high-resolution optical imagery, pixel-value difference maps, .kmz fracturing mapping and horizontal deformation maps derived from subpixel image correlation, which can uniquely separate the surface fracturing and deformation between the foreshock and mainshock events that can help answer these questions. Separate imaging of the events is made possible by the daily acquisition of optical imagery by the Planet labs cubesat constellation, which acquired data between the two earthquakes, on the morning of July 4th and 5th, at 11.13 am and 17.12 pm PST, respectively, with the images acquired just 40 minutes after the foreshock and 56 minutes before the mainshock, respectively. Analysis from these optical imagery reveals the location of surface faulting that allow us to map their spatial extent and determine their timing. These data which we provide here can help guide and validate field survey observations to help understand which faults ruptured when, and constrain slip inversion models for more accurate estimates of stress changes induced by the foreshock imposed on the surrounding faults.
DOI: 10.48577/jpl.ylalsd
title: Self-Deployable, Self-Stiffening, and Retractable Origami-Based Arrays for Spacecraft

description: Spacecraft with large arrays sometimes have deployed sizes that are much larger than the launch volumes; in this case, deployable arrays are used. Several methods exist for stowing, deploying, and stiffening large space arrays. Often these functions are performed by separate systems. Thiswork presents a novel array system that integrates these functions into one system, without the need for external deployment or stiffening structures. The integration comes from the combination of the kinematics of origami-based folding approaches, stored strain energy of compliant hinges, and tension cables. Additionally, due to the origami-based folding approach used, tunable deployed shapes and retraction are possible using reeled cables. The result is a new array architecture that is self-deployable, self-stiffening, and retractable (SDSR) and is described in this work. To understand the behavior of such systems, this work presents the modeling and testing of an SDSR array using an origami flasher pattern and discusses the results for the performance considerations of deployment motion, deployment stiffness, and dynamics.
DOI: 10.25549/independent-c69-46440
title: Reports (3 of 3) - A review of administrative processes of the Tampa Police Department by the Police Foundation, 1987 Mar. 3 - 1990 Oct. 20

description: Reports - A Review of Administrative Processes of the Tampa Police Department by the Police Foundation, 1987 March 3 - 1990 October 20.
DOI: 10.48577/jpl.xlh87i
title: MARS SCIENCE LABORATORY FLYAWAY GUIDANCE, NAVIGATION, AND CONTROL SYSTEM DESIGN

description: No abstract available.
DOI: 10.15468/dl.gc46rm
title: Occurrence Download

description: A dataset containing 109 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium cariniferum Rchb.f."
 ]
}

 The dataset includes 109 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170202-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tmyjaa
title: Occurrence Download

description: A dataset containing 13798 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "TaxonKey is Danaus plexippus (Linnaeus, 1758)"
 ]
}

 The dataset includes 13798 records from 41 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001449-171113114016250/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.3wulcd
title: Quantifying the Uncertainty in Remote Spectroscopy of Surface Composition

description: Remote surface measurements by imaging spectrometers play an important role in planetary and Earth science. To make thesemeasurements, investigators calibrate instrument data to absolute units, invert physical models to estimate atmospheric effects, andthen determine surface properties from the spectral reflectance. This study quantifies the uncertainty in this process. Globalmissions demand predictive uncertainty models that can estimate future errors for varied environments and observing conditions.Here we validate uncertainty predictions with remote surface composition retrievals and in situ measurements in a field analogueof Earth and planetary exploration. We consider rover transects at Cuprite, Nevada, and remote observations by NASA’s NextGeneration Airborne Visible Infrared Imaging Spectrometer (AVIRIS-NG). We show that accounting for input uncertainties canbenefit mineral detection methods such as constrained spectrum fitting. This suggests that operational uncertainty estimates couldimprove future NASA missions like the Earth Mineral dust source InvesTigation (EMIT) and the Lunar Trailblazer mission, as wellas NASA’s Decadal Surface Biology and Geology (SBG) Investigation.
DOI: 10.25549/independent-c69-46459
title: City of quartz. "The hammer and the rock", 1990

description: "The hammer and the rock", chapter 5 in Mike Davis. City of quartz. New York, New York: Verso, 1990: pp. 267-322. Includes dustjacket.
DOI: 10.48577/jpl.bg8tz1
title: Synthesis of methane observations across scales: Strategies for deploying a multi-tiered observing network.

description: Regional methane emissions monitoring is rapidly expanding with increased coverage of surface, airborne, and satellite instruments. We pilot a multi-tiered observing system in the Los Angeles Basin. We combine surface methane measurements from the Los Angeles Megacities Carbon Project, mountaintop retrievals from the CLARS-FTS instrument, and space-based XCH4 retrievals from the TROPOMI instrument into a single monitoring framework. We simulate these observations using a high-resolution tracer transport model. Using inverse methods, we compare the sensitivity of each observing system component to various emissions sources. Combining multiple observing system into one framework allows for increased spatial and temporal sensitivity to methane emissions. We find a close correspondence between these inverse flux trends and independent airborne AVIRIS-NG methane plume trends over a large landfill in the Los Angeles basin. These results show that multi-tiered observing systems can reveal insights about sub-basin scale methane emissions, which can be used to drive decision support
DOI: 10.48577/jpl.t7ljmp
title: Pre-discovery Activity of New Interstellar Comet 2I/Borisov Beyond 5 au

description: No abstract available.
DOI: 10.48577/jpl.ea0gj6
title: Investigating habitability with an integrated rock climbing robot and astrobiology instrument suite

description: A prototype rover carrying an astrobiology payload was developed and deployed at analog field sites to mature generalized system architectures capable of searching for biosignatures in extreme terrain across the solar system. Specifically, the four-legged LEMUR 3 climbing robot with microspine rock grippers carried three instruments: a micro-X-Ray fluorescence instrument based on the Mars 2020 mission’s PIXL provided elemental chemistry, a deep-UV fluorescence instrument based on Mars 2020’s SHERLOC mapped organics in bacterial communities on opaque substrates, and a near-infrared acousto-optic tunable filter-based point spectrometer identified minerals and organics in the 1.6 to 3.6 μm range. The rover also carried a lidar and a color camera for both science and navigation. Combined, this payload. Combined, this payload detects astrobiologically-important classes of rock components (elements, minerals, and organics) in extreme terrain, which this work demonstrates can reveal a correlation between textural biosignatures and the organics or elements expected to preserve them in a habitable environment. Across more than ten field tests, milestones were achieved in instrument operations, autonomous mobility in extreme terrain, and system integration that can inform future planetary science mission architectures. Contributions include 1) system-level demonstration of mock-missions to the vertical exposures of Mars lava tube caves and Mars canyon walls, 2) demonstration of multi-instrument integration into a confocal arrangement with surface scanning capabilities, and 3) demonstration of automated focus stacking algorithms for improved signal to noise ratios and reduced operation time.
DOI: 10.15468/dl.kvbjx7
title: Occurrence Download

description: A dataset containing 613 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Pinus taiwanensis Hayata",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 613 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001449-171219132708484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-46455
title: City of quartz. "The hammer and the rock", 1990

description: "The hammer and the rock", chapter 5 in Mike Davis. City of quartz. New York, New York: Verso, 1990: pp. 267-322. Includes dustjacket.