cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.q0fcq4
title: Labyrinth Terrain on Titan

description: The Cassini/Huygens mission revealed a terrain type on Saturn's moon Titan of dissected, elevated plateaux with a high density of valleys named labyrinth terrain. We define four subtypes of labyrinth terrains: valleyed, polygonal, finely-dissected, and the possible outlier Kronin Labyrinth. We mapped the locations of all labyrinths imaged by Cassini and found they are distributed preferentially at high latitudes. We characterize the labyrinths by morphometric parameters such as intervalley width, valley width, and percent valleys. We find many labyrinths contain closed valleys, which constrains their formation and evolution. We also examine their low microwave emissivity spectral characteristics and find that the labyrinths are consistent with a bulk composition of dominantly organic materials, with some component of water ice – characteristics similar to Titan's undifferentiated plains. Our analyses show that labyrinths are ancient terrains – only the mountains and hummocky terrains are older. This implies that significant organic production occurred early in Titan's history. The organic inventory represented by the labyrinths is estimated to be 15–42% of the solid organic inventory of Titan (or 14–35% of the total surface organics, if the hydrocarbons of the lakes and seas are also included). Our preferred formation of the labyrinth terrains is erosion through dissolution and fluvial processes that dissect the plateau in a manner similar to dissolution geology (karst) on Earth. This scenario requires that the organics that make up the labyrinth terrain be soluble in methane and/or ethane liquids. It also suggests that the origin of the plateaux may have derived from Titan's past chemical production and subsequent depositional record.
DOI: 10.15468/dl.dsxdah
title: Occurrence Download

description: A dataset containing 431507 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Zosteropidae",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 {
 "or" : [
 "BasisOfRecord is Human Observation",
 "BasisOfRecord is Machine Observation",
 "BasisOfRecord is Observation",
 "BasisOfRecord is Specimen"
 ]
 }
 ]
}

 The dataset includes 431507 records from 73 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001450-160509122628363/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-654
title: Gender Research

description: Graham & James collected research materials pertaining to the role of gender in policing. Included in the series are academic journal articles, working papers, reports, and a dissertation regarding the role and performance of female police officers. Also included is the firm's correspondence. Most materials in the series are derived from academic sources.
DOI: 10.48577/jpl.fv0sgh
title: Hot Isostatic Pressing of Ultrasonic Additive Manufacturing Liquid Cold Plate Heat Exchangers

description: The aim of this paper is to discuss the improved performance of an AA 6061 Ultrasonic Additive Manufacturing (UAM) heat exchanger device through the use of traditional hot isostatic pressing (HIP) and combined HIP and T6 heat treatment in a rapid quenching HIP. The paper begins by explaining how a UAM heat exchanger device is manufactured. This manufacturing includes HIP heat treatments performed by Quintus Technologies. These heat exchangers were then characterized at NASA JPL using helium leak and hydraulic burst pressure testing. Tensile testing was also carried out to help inform and corroborate burst pressure results.NASA’s Jet Propulsion Laboratory (JPL) manages planetary and interplanetary missions within our solar system. For many missions that JPL oversees, numerous critical liquid cold plate heat exchanger devices are required to regulate the sensitive, on-board electronic systems from temperature extremes experienced in space, on planets/moons, or in various atmospheres. These devices can be small (76 mm X 76 mm) or large (1 m X 1 m).
DOI: 10.15468/dl.znjv74
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium sculptum Rchb.f."
 ]
}

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170212-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.ebbriz
title: Calibration and Validation of the Polarimetric Radio Occultation and Heavy Precipitation experiment Aboard the PAZ Satellite

description: This manuscript presents the calibration and validation studies for the Radio Occultations and Heavy Precipitation experiment aboard the PAZ satellite. These studies, neces- 5 sary to assess and characterize the noise level and robustness of the differential phase shift () observable of Polarimetric Radio Occultations (PRO), confirm the good performance of the experiment and the capability of this technique in sensing precipitation. It is shown how all the predicted effects that 10 could have an impact into the PRO observables (e.g. effect of metallic structures nearby the antenna, the Faraday Rotation at the ionosphere, signal impurities in the transmission, altered cross polarization isolation, etc.) are effectively calibrated and corrected, and they have a negligible effect into 15 the final observable. The on-orbit calibration, performed using an extensive dataset of free-of-rain and low ionospheric activity observations, is successfully used to correct all the collected observations, which are further validated against independent precipitation observations confirming the sen20 sitivity of the observables to the presence of hydrometeors. The validation results also show how vertically averaged can be used as a proxy for precipitation.
DOI: 10.25549/independent-c69-609
title: Gender Research, 1969-1991

description: Who is More Violent: The Male or Female Police Officer Sean A. Grennan, Ph.D. PART OF A SERIES: Graham & James collected research materials pertaining to the role of gender in policing. Included in the series are academic journal articles, working papers, reports, and a dissertation regarding the role and performance of female police officers. Also included is the firm's correspondence. Most materials in the series are derived from academic sources.
DOI: 10.48577/jpl.mwxgsn
title: A SmallSat Concept to Resolve Diurnal and Vertical Variations of Aerosols, Clouds, and Boundary Layer Height

description: A SmallSat mission concept is formulated here to carry out Time-varying OpticalMeasurements of Clouds and Aerosol Transport (TOMCAT) from space while embracing low- cost opportunities enabled by the revolution in Earth science observation technologies. TOMCAT’s “around-the-clock” measurements will provide needed insights and strong synergy with existing earth observation satellites to (1) statistically resolve diurnal and vertical variation of cirrus cloud properties (key to the Earth’s radiation budget), (2) determine the impacts of regional and seasonal planetary boundary layer (PBL) diurnal variation on surface air quality and low-level cloud distributions, and (3) characterize smoke and dust emission processes impacting their long-range transport on the sub-seasonal to seasonal time scales. Clouds, aerosol particles, and the PBL play critical roles in the Earth’s climate system at multiple spatiotemporal scales. Yet, their vertical variations as a function of local time are poorly measured from space. Active sensors for profiling the atmosphere typically utilize sun-synchronous low earth orbits (LEO) with rather limited temporal and spatial coverage, inhibiting the characterization of spatiotemporal variability. Pairing compact active lidar and passive multi-angle remote sensing technologies from an inclined LEO platform enables measurements of the diurnal and vertical variability of aerosols, clouds, and aerosol mixing layer (or PBL) height in tropical-to-midlatitude regions where most of the world’s population resides. TOMCAT is conceived to bring potential societal benefits by delivering its data products in near real time and offering on-demand hazard-monitoring capabilities to profile fire injection of smoke particles, the frontal lofting of dust particles, and the eruptive rise of volcanic plumes.
DOI: 10.48577/jpl.8ysy9u
title: The First Polarimetric GNSS-Reflectometer Instrument in Space Improves the SMAP Mission’s Sensitivity over Densely Vegetated Areas

description: The Soil Moisture Active Passive (SMAP) mission has dramatically benefited our knowledge of the Earth’s surface processes. The SMAP mission was initially designed to provide complementary L-band measurements from a radiometer and a radar, producing geophysical measurements at a finer spatial resolution than the radiometer alone. Both instruments, sensitive to the geophysical parameters in the swath, provided independent measurements at different spatial resolutions. A few months after SMAP’s launch, the radar transmitter’s high-power amplifier suffered an anomaly, and the instrument could no longer return data. During recovery activities, the SMAP mission switched the radar receiver frequency enabling the reception of Global Positioning System (GPS) signals scattered off the Earth’s surface, enabling the radar to become the first spaceborne polarimetric Global Navigation Satellite System – Reflectometry (GNSS-R) instrument. With seven years of continued measurements, SMAP GNSS-R data are the most extensive existing GNSS-R dataset and the only one providing GNSS-R polarimetric measurements. We demonstrate that the SMAP polarimetric GNSS-R reflectivity, derived from Stokes parameters mathematical formulation, can enhance the radiometer data over dense vegetation areas, recovering some of the original SMAP radar capability to contribute to the science products and pioneering the first polarimetric GNSS-R mission.
DOI: 10.15468/dl.obnebf
title: Occurrence Download

description: A dataset containing 505 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Mikania micrantha (Hieron.) B.L.Rob."
 ]
}

 The dataset includes 505 records from 49 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001450-160803222355964/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-46090
title: Reports - Blue Ribbon Commision on Public Safety and Community Relations: A Report to the County Executive Prince George's County, Maryland 1990

description: Blue Ribbon Commission on Public Safety and Community Relations "A report to the County Executive, Prince George's County, Maryland", 1990 February.
DOI: 10.48577/jpl.fa7xl9
title: Lunar Laser Ranging Retroreflectors: Velocity Aberration and Diffraction Pattern

description: The Lunar Laser Ranging (LLR) retroreflector arrays have been on the Moon for one-half century. During that time the laser range accuracy has improved by a factor of 100. Consequently, the science results have also improved by orders of magnitude. New retroreflectors are scheduled to go to the Moon on Commercial Lander Payload Services missions and the Lunar Geophysical Network mission. The new retroreflectors are single 10 cm corner cube retroreflectors that will not spread the laser pulse during reflection like the existing arrays do. Due to the orbital and Earth rotational speeds, there is a velocity aberration of 0.7" to 1.5". Larger corner cubes require attention to ensure that the spread of possible velocity aberration displacements be optimally contained within the diffraction pattern. The diffraction pattern can be changed by making one of the rear dihedral angles slightly different from 90º. Improvements in the equipment at the LLR stations and improvements in the data analysis software are also desirable. Future possibilities are described.
DOI: 10.15468/dl.u2zsnw
title: Occurrence Download

description: A dataset containing 84 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium secundum (Blume) Lindl. ex Wall."
 ]
}

 The dataset includes 84 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170213-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.kpphkg
title: Collisional heating of icy planetesimals. I. Catastrophic collisions

description: Planetesimals in the primordial disc may have experienced a collisional cascade. If so, the comet nuclei later placed in the Kuiper belt, scattered disc, and Oort Cloud would primarily be fragments and collisional rubble piles from that cascade. However, the heating associated with the collisions cannot have been strong enough to remove the hypervolatiles that are trapped within more durable ices, because comet nuclei are rich in hypervolatiles. This places constraints on the diameter of the largest bodies allowed to participate in collisional cascades, and limits the primordial disc lifetime or population size. In this paper, the thermophysical code NIMBUS is used to study the thermal evolution of planetesimals before, during, and after catastrophic collisions. The loss of CO during segregation of CO2 : CO mixtures and during crystallisation of amorphous H2O is calculated, as well as mobilisation and internal relocation of CO2. If an amorphous H2O host existed, and was protected by a CO2 : CO heat sink, only diameter D &lt; 20 km (inner disc) and D &lt; 64 km (outer disc) bodies could have been involved in a collisional cascade. If CO2 was the only CO host, the critical diameters drop to D &lt; 20-32 km. Avoiding disruption of larger bodies requires a primordial disc lifetime of &lt;9 Myr at 15 au and &lt;50-70 Myr at 30 au. Alternatively, if a 450 Myr disc lifetime is required to associate the primordial disc disruption with the Late Heavy Bombardment, the disc population size must had been 6-60 times below current estimates.
DOI: 10.48577/jpl.wjjmcw
title: Ranging and Imaging of Spacecraft with the Deep-Space Network’s High-Gain Antennas

description: Recent interest in cis-lunar space exploration and situational awareness demands accurate detection, ranging, and imaging capabilities to monitor spacecraft in the lunar environment. NASA’s 34 meter Beam Waveguide antennas equipped with 20 kW and 80 kW X-band transmitters are ideal for illuminating decommissioned satellites, which enables the application of recently developed algorithms to help determine their range and position in space, and even offering the possibility of generating Doppler-delay images of large spacecraft. This paper describes experiments carried out at Goldstone with NASA’s high-gain 34 meter antennas, where decommissioned GOES satellites were illuminated with suitable ranging and image-forming waveforms designed to determine their range and position in space, and form Doppler-delay images capable of resolving the main body, solar panels and instruments on long booms to help identify and classify current and future spacecraft in the cis-lunar environment.
DOI: 10.15468/dl.wu3kvp
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/0001450-160822134323880/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-46057
title: Reports - Police Foundation Annual Report - 1989 - G 31161-00001

description: Reports - James Q. Wilson, Hubert Williams, et al. Police Foundation annual report. Washington, DC: Police Foundation, 1989.
DOI: 10.48577/jpl.3z4cbu
title: A Direct Detection LiDAR Detector for the Europa Lander Concept

description: Jet Propulsion Laboratory is developing a Europa Lander astrobiology mission concept to search for biosignatures within Europa’s subsurface. However, Europa’s rugged terrain presents a number of physical hazards for landing. MIT Lincoln Laboratory is designing a radiation-hardened real-time direct-detection LIDAR system at 532nm to aid with autonomous hazard avoidance and landing site selection for this Europa Lander concept. The detector for this system is a 2048x32 array of silicon Geiger-mode APDs and covers the required field-of-view in one dimension, removing the need for 2D stitching and enabling real-time data processing. Detector design, improvements for radiation tolerance and component characterization results are presented.
DOI: 10.48577/jpl.uvra4x
title: Evolution of Ice and Organics - from Interstellar Grains to Cometary Nuclei

description: No abstract available.
DOI: 10.15468/dl.n8hn39
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium serena-alexianum J.J.Wood & A.Lamb"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170223-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.yzp7wh
title: CloudSat’s Cloud Profiling Radar: Status, Performance, and latest data product changes

description: No abstract available.
DOI: 10.25549/independent-c69-46043
title: Reports - Police Foundation Annual Report - 1989 - G 31161-00001

description: Reports - James Q. Wilson, Hubert Williams, et al. Police Foundation annual report. Washington, DC: Police Foundation, 1989.
DOI: 10.48577/jpl.r5tpzo
title: Exoplanet Explorers (ExoExplorers) Program

description: No abstract available.
DOI: 10.15468/dl.ni8bjh
title: Occurrence Download

description: A dataset containing 181 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (UTCA) University of Tennessee - Amphibians Collection"
 ]
}

 The dataset includes 181 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001450-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-46320
title: Reports (1-2 of 3) - A review of administrative processes of the Tampa Police Department by the Police Foundation, 1988-11-18

description: Report: A review of administrative processes of the Tampa Police Department by the Police Foundation, 1988 November 18.
DOI: 10.48577/jpl.crq1c6
title: Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm

description: The National Institute for Environmental Studies has provided the column-averaged dry-air mole fraction of carbon dioxide and methane (XCO2 and XCH4) products (L2 products) obtained from the Greenhouse gases Observing SATellite for more than a decade. Recently, we updated the retrieval algorithm used to produce the new L2 product, V03.00. The main changes from the previous version (V02) of the retrieval algorithm are the treatment of cirrus clouds, the degradation model of the Thermal And Near-infrared Spectrometer for carbon Observation – Fourier Transform Spectrometer (TANSO-FTS), solar irradiance spectra, and gas absorption coefficient tables. The retrieval results from the updated algorithm showed improvements in fitting accuracies in the O2 A, weak CO2, and CH4 bands of TANSO-FTS, although the residuals increase in the strong CO2 band over the ocean. The direct comparison of the new product obtained from the updated (V03) algorithm with the previous version V02.90/91 and the validations using the Total Carbon Column Observing Network revealed that the V03 algorithm increases the amount of data without diminishing the data qualities of XCO2 and XCH4 over land. Further, the negative bias of XCO2 is larger than that of the previous version over the ocean, and bias correction is still necessary. Additionally, the V03 algorithm resolves the underestimation of the XCO2 growth rate compared with the in situ measurements over the ocean recently found using V02.90/91 and V02.95/96.
DOI: 10.15468/dl.vzy5dm
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium sepikanum Schltr."
 ]
}

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170217-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.udof8b
title: Multiple Rings and Asymmetric Structures in the Disk of SR 21

description: Crescent-like asymmetric dust structures discovered in protoplanetary disks indicate dust aggregations. Thus, the research on them helps us understand the planet formation process. Here we analyze the ALMA data of the protoplanetary disk around the T-Tauri star SR 21, which has asymmetric structures detected in previous sub-millimeter observations. Imaged at ALMA Band 6 (1.3 mm) with a spatial resolution of about 0.′′04, the disk is found to consist of two rings and three asymmetric structures, with two of the asymmetric structures being in the same ring. Compared to the Band 6 image, the Band 3 (2.7 mm) image also shows the three asymmetric structures but with some clumps. The elongated asymmetric structures in the outer ring could be due to the interactions of a growing planet. By fitting the Band 3 and Band 6 dust continuum data, two branches of solutions of maximum dust size in the disk are suggested: one is larger than 1 mm, and the other is smaller than 300 μm. High-resolution continuum observations at longer wavelengths as well as polarization observations can help break the degeneracy. We also suggest that the prominent spiral previously identified in VLT/SPHERE observations to the south of the star at 0.′′25 may be the scattered light counterpart of the Inner Arc, and the structure is a dust-trapping vortex in nature. The discovered features in SR
DOI: 10.48577/jpl.wmpynl
title: Mid-wavelength and long-wavelength infrared focal planes for smallsat applications

description: No abstract available.
DOI: 10.25549/independent-c69-46323
title: Reports (1-2 of 3) - A review of administrative processes of the Tampa Police Department by the Police Foundation, 1988-11-18

description: Report: A review of administrative processes of the Tampa Police Department by the Police Foundation, 1988 November 18.
DOI: 10.48577/jpl.8bv8rt
title: Working at JPL Sampling Mars with Perseverance

description: No abstract available.
DOI: 10.15468/dl.guq4cc
title: Occurrence Download

description: A dataset containing 2219 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Papilio zelicaon Lucas, 1852",
 "HasCoordinate is TRUE"
 ]
}

 The dataset includes 2219 records from 36 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001450-170714134226665/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wufg45
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium sematoglossum Schltr."
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170214-230224095556074/datasets/export for details.