cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.nqxycv
title: All-Metal Patch Dual-Frequency Dual-Circular Polarized Fan-Beam Antenna

description: An all metal patch dual frequency dual circularly polarized X-band antenna is under development at NASA’s Jet Propulsion Laboratory for a potential Europa Lander. The antenna is proposed to be used as a secondary telecommunication antenna for Direct-to-Earth (DTE) link without relying on an Orbiter. An antenna array with fan-beam radiation has been designed which can result in a wide beam circular polarization for longer coverage while surviving the harsh environmental conditions at Europa, including, cryogenic temperature, high radiation and electrostatic discharge (ESD) levels.
DOI: 10.15468/dl.kz2qvy
title: Occurrence Download

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

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0169941-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.gj5fl2
title: Machine learning algorithm to characterize antimicrobial resistance associated with the International Space Station surface microbiome

description: Background: Antimicrobial Resistance (AMR) has a detrimental impact on humanhealth on Earth and it is equally concerning in other environments such as space dueto microgravity, radiation and confinement, especially for long-distance space travel.The International Space Station (ISS) is ideal for investigating microbial diversity andvirulence. The shotgun metagenomics data of the ISS generated during the MicrobialTracking – 1 (MT-1) project and resulting metagenome-assembled genomes (MAGs)across three flights in eight different locations during 12 months were used in thisstudy. The objective of this study was to identify the AMR genes associated with wholegenomes of 227 cultivable strains, 21 shotgun metagenome sequences, and 24 MAGsretrieved from the ISS environmental samples that were treated with propidiummonoazide (PMA; viable microbes).Results: We have analyzed the data using a deep learning model, allowing us to gobeyond traditional cut-offs based only on high DNA sequence similarity and extendingthe catalog of AMR genes. Our results in PMA treated samples revealed AMRdominance in the last flight for Kalamiella piersonii , a bacteria related to urinary tractinfection in humans. The analysis of 227 pure strains isolated from the MT-1 projectrevealed hundreds of antibiotic resistance genes from many isolates, including two topranking species that corresponded to strains of Enterobacter bugandensis and Bacillus cereus . Computational predictions were experimentally validated by antibioticresistance profiles in these two species, showing a high degree of concordance.Specifically, disc assay data confirmed the high resistance of these two pathogens tovarious beta-lactam antibiotics.Conclusion: Overall, our computational predictions and validation analysesdemonstrate the advantages of machine learning to uncover concealed AMRdeterminants in metagenomics datasets, expanding the understanding of the ISSenvironmental microbiomes and their pathogenic potential in humans.
DOI: 10.15468/dl.x3xqtg
title: Occurrence Download

description: A dataset containing 179 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Astragalus tragacantha L.",
 "Country is Spain"
 ]
}

 The dataset includes 179 records from 24 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001522-150528172251762/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45741
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.qh80ve
title: Inner Habitable Zone Boundary for Eccentric Exoplanets

description: The climate of a planet can be strongly a ected by its eccentricity due to variations in the stellar ux. There are two limits for the dependence of the inner habitable zone boundary (IHZ) on eccentricity: (1) the mean-stellar ux approximation (SIHZ / p 1 􀀀 e2), in which the temperature is approximately constant throughout the orbit, and (2) the maximum-stellar ux approximation (SIHZ / (1 􀀀 e)2), in which the temperature adjusts instantaneously to the stellar ux. Which limit is appropriate is determined by the dimensionless parameter   = C BP , where C is the heat capacity of the planet, P is the orbital period, and B = @ @Ts , where is the outgoing longwave radiation and Ts is the surface temperature. We use the Buckingham   theorem to derive an analytical function for the IHZ in terms of eccentricity and  . We then build a time-dependent energy balance model to resolve the surface temperature evolution and constrain our analytical result. We  nd that   must be greater than about   1 for the mean-stellar ux approximation to be nearly exact and less than about   0:01 for the maximum-stellar ux approximation to be nearly exact. In addition to assuming a constant heat capacity, we also consider the e ective heat capacity including latent heat (evaporation and precipitation). We  nd that for planets with an Earth-like ocean, the IHZ should follow the mean-stellar ux limit for all eccentricities. This work will aid in the prioritization of potentially habitable exoplanets with non-zero eccentricity for follow-up characterization.
DOI: 10.48577/jpl.c8mvev
title: Modeling Multivariate Spatial Processes for Large Data

description: Large multivariate spatial data sets are common in environmental and climate sciences. This article proposes a flexible multivariate spatial statistical model for such data. Built upon Ma and Kang (2020), we model multivariate spatial processes in an additive form with two components to induce spatial dependence and a relationship between distinct variables: One component is of a low-rank format, and the other component is built in a conditional way with multivariate spatial conditional autoregressive (CAR) models. By combining these two components, the resulting model not only allows for efficient computation of parameter estimation and spatial prediction, but is also flexible to describe spatial covariance and cross-covariance structures that can potentially be nonstationary or asymmetric. The performance of the proposed model that we call the multivariate fused Gaussian process (MFGP) is investigated through an extensive simulation study and a real-data example. The results show that MFGP, by borrowing information from complementary data, provides substantially improved spatial predictions compared to the univariate models. We also demonstrate that MFGP outperforms the multivariate model with the low-rank component solely or with a multivariate CAR model with a separable covariance matrix.
DOI: 10.48577/jpl.82igds
title: Downward oxidant transport through Europa's ice shell by density-driven brine percolation

description: Jupiter's moon Europa is thought to have an ocean beneath its ice shell and the habitability of the internal ocean depends on the availability of redox gradients. Downward transport of radiolytic materials produced at the surface through the ice shell sets the flux of oxidants into the ocean. Here, we propose that oxidants are transported through the ice shell by the drainage of near-surface brines formed concurrently with chaotic terrains. We estimate that Europa's porous regolith contains $3.7\times10^{14}$ to $5.6\times10^{18}$ moles ($1.2\times10^{13}-1.8\times10^{17}$ kg) of trapped \Oxy. Simulations of coupled melt-migration and eutectic phase behavior show that brines drain before they refreeze, delivering $\sim$85\% of the surface oxidants to the ocean on timescales of $2\times10^4$ years. From the distribution of chaotic terrains and from Europa's surface age we estimate that brine drainage could deliver \Oxy\, to the ocean at rates of $2.0\times10^6$ to $1.3\times10^{10}$ mol/yr. Tidal heating is thought to maintain large subsurface oceans on several Jovian and Saturnian satellites \cite{Nimmo2016,Lunine2017} and these icy ocean worlds are candidates in the search for extraterrestrial life \cite{Gaidos1999,Domagal-Goldman2016}. Jupiter's moon Europa will be visited by both the Europa Clipper and JUICE missions \cite{Grasset2013,Pappalardo2015} because it is of particular interest in this search. The habitability of Europa's interior ocean depends, among other conditions, on the availability of redox gradients \cite{Chyba2001a,Pasek2012,Vance2016,Russell2017}. Sufficient oxidant fluxes into the ocean are feasible if oxidants produced by irradiation at the surface \cite{Carlson1999} can be transported through the ice shell. While Europa's ice shell is generally thought to be convecting \cite{Pappalardo1998,McKinnon1999}, it likely has a conductive lid that prevents surface entrainment (Figure~\ref{fig:fig1}a). The presence of such a lid is consistent with the limited observational evidence for direct subduction of the irradiated surface \cite{Kattenhorn2014} and theoretical arguments against subduction \cite{Johnson2017,Howell2019}.Another mechanism to connect the surface to the ocean is the breaching of Europa's ice shell by large impacts \cite{Bray2014,Cox2015}. Although impact breaching may once have been common, there is scant observational evidence for impact-driven oxidant transfer in the last 30-70~Ma \cite{Zahnle2008,Bierhaus2009,Steinbruegge2020}. This leaves poorly defined processes of resurfacing or crustal thickening as potential transport mechanisms for oxidants \cite{Greenberg2010}. Consequently, the oxidant flux into Europa's ocean is currently not understood and presents a major obstacle to assessing its habitability \cite{Hand2007}.
DOI: 10.15468/dl.m7sx6z
title: Occurrence Download

description: A dataset containing 76020 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Lepus timidus Linnaeus, 1758"
 ]
}

 The dataset includes 76020 records from 234 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0003215-240216155721649/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45664
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.15468/dl.hlth8n
title: Occurrence Download

description: A dataset containing 85 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Limonium dodartii (Girard) Kuntze",
 "Country is Spain"
 ]
}

 The dataset includes 85 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001522-150615163101818/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.jt2st7
title: Global net biome CO2 exchange predicted comparably well using parameter–environment relationships and plant functional types

description: Accurate estimation and forecasts of net biome CO2 exchange (NBE) are vital for understanding the role of terrestrial ecosystems in a changing climate. Prior efforts to improve NBE predictions have predominantly focused on increasing models’ structural realism (and thus complexity), but parametric error and uncertainty are also key determinants of model skill. Here, we investigate how different parameterization assumptions propagate into NBE prediction errors across the globe, pitting the traditional plant functional type (PFT)-based approach against a novel top-down, machine learning-based “environmental filtering” (EF) approach. To do so, we simulate these contrasting methods for parameter assignment within a flexible model–data fusion framework of the terrestrial carbon cycle (CARDAMOM) at global scale. In the PFT-based approach, model parameters from a small number of select locations are applied uniformly within regions sharing similar land cover characteristics. In the EF-based approach, a pixel’s parameters are predicted based on underlying relationships with climate, soil, and canopy properties. To isolate the role of parametric from structural uncertainty in our analysis, we benchmark the resulting PFT-based and EF-based NBE predictions with estimates from CARDAMOM’s Bayesian optimization approach (whereby “true” parameters consistent with a suite of data constraints are retrieved on a pixel-by-pixel basis). When considering the mean absolute error of NBE predictions across time, we find that the EF-based approach matches or outperforms the PFT-based approach at 55% of pixels—a narrow majority. However, NBE estimates from the EF-based approach are susceptible to compensation between errors in component flux predictions, and predicted parameters can align poorly with the assumed “true” values. Overall, though, the EF-based approach is comparable to conventional approaches and merits further investigation to better understand and resolve these limitations. This work provides insight into the relationship between TBM performance and parametric uncertainty, informing efforts to improve model parameterization via PFT-free and trait-based approaches.
DOI: 10.25549/independent-c69-45829
title: Reviews / summaries of complaints & personnel files (1989-1990), 1991-06-21

description: Memo - re: internal affairs division review of personnel complaints - from: Thomas K Braun; to: Mr. Drooyan; IAD investigative file - research forms (1989-1990), 1991 June 21. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.hdzdt3
title: AN ULTRA-WIDEBAND LUNAR HEAT FLOW RADIOMETER (LHR) FOR THE DEVELOPMENT AND ADVANCEMENT OF LUNAR INSTRUMENTATION (DALI)

description: The ultra-wideband spectro-radiometer instrument aims at measuring the brightness temperature gradient in the upper lunar regolith using a wideband passive microwave spectrometer covering a continuous band from 300 MHz to 6 GHz. As a part of the Development and Advancement of Lunar Instrumentation (DALI) program, the designed ultra-wideband spectrometer is expected to provide lunar heat flux measurements. Difficulty in RF matching across the ultra-wideband and lack of isolators covering the large bandwidth make it challenging to design and calibrate the instrument. The heat-flow spectro-radiometer instruments employ internal calibration sources for tracking and detecting mismatch changes in addition to gain variations measurements for stable and reliable radiometric operation.
DOI: 10.48577/jpl.aq9ix2
title: Deformation Characteristics of Solid-state Benzene: a Step towards Understanding Planetary Geology

description: No abstract available.
DOI: 10.15468/dl.wqz4d6
title: Occurrence Download

description: A dataset containing 203 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Bouffordia dichotoma (Willd.) H.Ohashi & K.Ohashi"
 ]
}

 The dataset includes 203 records from 30 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0013024-240202131308920/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.j7fn8s
title: Detector Development for the Lunar Crater Radio Telescope

description: An ultra-long wavelength 3-30 MHz Lunar Crater Radio Telescope (LCRT) is under development at the NASA’s Jet Propulsion Laboratory. The LCRT consists of a 1 km diameter reflector antenna and receiver to be deployed in the far side of the moon. The telescope will enable the observations of the early universe at the wavelengths longer than 10 m to study the cosmological signatures from the Dark Ages. Once deployed, LCRT will be the largest filled telescope in the Solar System. The 10-100 m wavelength telescope, however, presents stringent challenges and specifications to meet the Science mission of the project. The paper discusses the RF aspect of the LCRT and presents probable solutions for the detector.
DOI: 10.15468/dl.wggegd
title: Occurrence Download

description: A dataset containing 224 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Kaloula rugifera Stejneger, 1924"
 ]
}

 The dataset includes 224 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001522-150811131857512/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45634
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.lmxx00
title: Spaceborne Radar 101 JPL’s Radar Programs

description: No abstract available.
DOI: 10.48577/jpl.32rt6k
title: Extended Compendium of Total Ionizing Dose (TID) Test Results for the Europa Clipper Mission

description: Results of total ionizing dose (TID) tests and analysis on Electric, Electronic, and Electromechanical (EEE) parts, performed by the Jet Propulsion Laboratory in support of the Europa Clipper Mission.
DOI: 10.48577/jpl.mojrvs
title: NASA JPL's Planetary Defense Activities presentation

description: No abstract available.
DOI: 10.15468/dl.0odei6
title: Occurrence Download

description: A dataset containing 108 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Euphydryas editha quino (Behr, 1863)"
 ]
}

 The dataset includes 108 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001522-150831095807960/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-45716
title: Reviews / summaries of complaints & personnel files (1987-1990), 1991-05-24

description: Internal Affairs Division investigative file - research forms, random sample of complaints (1987-1990), 1991 May 24. PART OF A SERIES: To better understand how LAPD management reacts to problem officers, Skadden, Arps, Slate, Meagher & Flom examined the Department's procedures regarding the identification, documentation, and response to personnel complaints. The series includes memoranda and correspondence; attorney notes; materials related to the firm's administrative capacities, including staff rosters and work plans; flow charts that illustrate the LAPD's structure and organization; and draft copies of the firm's contributions to the Commission report.
DOI: 10.48577/jpl.aynn5i
title: Roman Coronagraph Instrument overview for Exoplanets IV

description: No abstract available.
DOI: 10.15468/dl.baxm28
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Allium seirotrichum Ducell. & Maire"
 ]
}

 The dataset includes 3 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0026972-240216155721649/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.jf6iql
title: Dark Comets? II: Detection of Non-Gravitational Accelerations in a Sample of Inactive Small Bodies

description: In this paper, we report statistically significant detections of out-of-plane non-gravitational accelerations based on astrometric data in the photometrically inactive objects 1998 KY26, 2005 VL1, 2016 NJ33, 2010 VL65, and 2010 RF12. The magnitudes of the non-gravitational accelerations are greater than those typically induced by the Yarkovsky effect or radiation pressure. Therefore, we hypothe24 size that the accelerations are driven by outgassing and calculate nominal production rates of H2O implied for each object. We attempt to reconcile outgassing induced acceleration with the lack of visible comae or photometric activity via rapid rotation and low levels of gas production. First, we argue that rapidly rotating objects do not retain surface rubble that is not bound by tensile strength. This occurs when the rotational period PRot &lt; PCrit ≃ 2.3 hours for a spherical object with bulk density ρBulk = 1 g cm−3. At these rotational speeds — faster than any measured of cometary nuclei — dust production is strictly set by volatile mass loss modulated by the primordial dust to gas ratio. This yields negligible dust production of ∼ 10−4 g s−1 in each object, comparable to that of (101955) Bennu, which was only detectable in-situ by OSIRIS-REx. These dust production rates correspond to changes in brightness of order ∼ 0.0025%, which are undetectable in extant photometric data. We assess the observability of each of these targets before 2024, and find that the orbit of 1998 KY26 — which is also the target for the extended Hayabusa2 mission — exhibits favorable viewing geometry during this period. This effect should be more apparent in small objects that are easier to spin up, and therefore we expect to find more small active objects without comae in the Solar System small body populations. These results also have direct ramifications on the interpretation of the non-gravitational forces acting on the first interstellar object, 1I/‘Oumuamua.