cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48577/jpl.xljnqs
title: A REDSHIFT FOR THE FIRST EINSTEIN RING, MG 1131+0456

description: MG 1131+0456 is a radio-selected gravitational lens, and is the first known Einstein ring. Discovered in 1988, the system consists of a bright (S74 MHz = 3.7 Jy) radio source imaged into a ring and two compact, flat-spectrum components separated by 2.′′1. The ring is optically faint (R = 23.3), rising steeply into the near- and mid-infrared (K = 17.8; W2 = 13.4). The system has been intensively studied in the intervening years, including high-resolution radio imaging, radio monitoring, and near-infrared imaging with Hubble and Keck. The lensing galaxy is at zl = 0.844. However, to date, no spectroscopic redshift had been reported for the lensed source. Using archival Keck data from 1997, we report the robust detection of a single narrow emission line at 5438 Å which we associate with C III] λ1909 Å from a type-2 quasar at zs = 1.849. Support for this redshift identification comes from weaker emission associated with C IV λ1549 Å and He II λ1640 Å, typical of type-2 quasars, as well as the lack of emission lines in archival near-infrared Keck spectroscopy. We also present, for the first time, Cycle 1 Chandra observations of MG 1131+0456, which clearly resolves into two point sources with a combined flux of ∼ 10−13 erg cm−2 s−1 and a best-fit column density of ∼ 3 × 1022 cm−2 . We suggest a new method to identify candidate lensed AGN from low-resolution X-ray surveys such as eROSITA by targeting sources that have anomalously high X-ray luminosity given their mid-infrared luminosity.
DOI: 10.48577/jpl.t5e4jc
title: Fire decline in dry tropical ecosystems enhances decadal land carbon sink

description: The terrestrial carbon sink has significantly increased in the past decades, but the21 underlying mechanisms are still unclear. The current synthesis of process-based estimates of land22 and ocean sinks requires an additional sink of 0.6 PgC yr-1 in the last decade to explain the observed23 airborne fraction. A concurrent global fire decline was observed in association with tropical24 agriculture expansion and landscape fragmentation. Here we show that a decline of 0.2±0.1 PgC25 yr-1 in fire emissions during 2008-2014 relative to 2001-2007 also induced an additional carbon26 sink enhancement of 0.4±0.2 PgC yr-1 attributable to carbon cycle feedbacks, amounting to a27 combined sink increase comparable to the 0.6 PgC yr-1 budget imbalance. Our results suggest that28 the indirect effects of fire, in addition to the direct emissions, is an overlooked mechanism for29 explaining decadal-scale changes in the land carbon sink and highlight the importance of fire30 management in climate mitigation.
DOI: 10.25549/independent-c69-46220
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.zpobxo
title: A Novel 1/f Noise Mitigation Technique Applied to 670 GHz Receiver

description: In this letter, a novel 1/f noise mitigation technique is presented to improve the receiver 1/f noise performance on a 670 GHz receiver. Time domain 1/f noise corrected samples are compared with the samples obtained without the correction. The spectral domain analysis shows that the 1/f noise mitigation method improves the receiver noise performance by 19 dB in the receiver under test. The presented 1/f noise mitigation technique can be applied to any direct-detection THz range receivers.
DOI: 10.15468/dl.bbc5yz
title: Occurrence Download

description: A dataset containing 2212 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Arabidopsis halleri (L.) O'Kane & Al-Shehbaz"
 ]
}

 The dataset includes 2212 records from 95 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001444-150221044754056/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tpp6hr
title: Occurrence Download

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

 The dataset includes 4 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170031-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.y8yf93
title: Penitente formation is unlikely on Europa

description: Europa’s icy surface is unknown at the meter scale. Recent work argues that 15-meter ice spikes, called penitentes, form on Europa as a result of sublimation and solar irradiance1. The sublimation calculations are well-founded, but the extension to penitente formation is incomplete. The airless surface of Europa yields a large mean-free path for water (~10^5 m), leading to efficient sublimation, instead of the differential sublimation modulated by self-illumination that is required for penitentes.
DOI: 10.48577/jpl.g4ggd2
title: Viability of Bacillus subtilis spores exposed to ultraviolet light at ocean world surface temperatures

description: This work investigated microorganism survival under temperature and ultraviolet (UV) radiation conditions found at the surface of ice covered ocean worlds. These studies were motivated by a desire to understand the ability of resilient forms of life to survive under such conditions as a proxy for potential endogenic life and to inform planetary protection protocols for future missions. To accomplish this, we irradiated Bacillus subtilis spores with solar-like UV photons at temperatures ranging from room temperature down to 11 K and reported survival fractions with respect to uence. We observe an increase in survival at low temperatures and found that the inactivation rate follows an Arrhenius-type behavior above 60 K. For solar-photon uxes and surface temperatures at Europa and Enceladus, we found that Bacillus subtilis spores would be inactivated in under less than an hour when in direct sunlight. Keywords: Ocean Worlds, Bacillus subtilis, UV-induced inactivation, cryogenic surfaces, planetary protection
DOI: 10.25549/independent-c69-44296
title: Attorney work product: Attorney notes, 1991-04-23

description: Attorney work product: (1) file index, (2) attorney notes, (3) internal Skadden memos, (4) draft documents, (5) participant's list - handwritten notes, 1991 April 23. 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.qyfbox
title: Jupiter’s gravity field halfway through the Juno mission

description: The Juno spacecraft reached the mid-point of its nominal mission in December 2018, after completing 17 perijove passes. Ten of these were dedicated to the determination of the gravity field of the planet, with the aim of constraining its interior structure. We provide an update on Jupiter’s gravity field, its tidal response and spin axis motion over time. The analysis of the Doppler data collected during the perijove passes hints to a non-static and/or non-axially symmetric field, possibly related to several different physical mechanisms, such as normal modes or localized atmospheric or deeply-rooted dynamics.
DOI: 10.15468/dl.p5nhp5
title: Occurrence Download

description: A dataset containing 6601 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Abrothrix longipilis (Waterhouse, 1837)"
 ]
}

 The dataset includes 6601 records from 23 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001444-150316153013904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-c69-44293
title: Attorney work product: Attorney notes, 1991-04-23

description: Attorney work product: (1) file index, (2) attorney notes, (3) internal Skadden memos, (4) draft documents, (5) participant's list - handwritten notes, 1991 April 23. 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.eiqisd
title: Statistical approach for automated weighting of datasets: Application to heat capacity data

description: An essential step in calculation of phase diagrams (CALPHAD) assessments is assigning relative weights to different datasets.Nonetheless, there is no consensus as to the best approach regarding this issue. Currently, such an assignment of weights for experimental or first-principles data is performed manually based on the knowledge and experience of the researcher. Since the existing manual treatment is tedious and subjective, manipulation of such data is rapidly advancing towards automated procedures through statistical and data mining tools. In this study, we propose an automated approach to determine the weight of datasets based on the K-Fold Cross-Validation method, modified under the conditions that each fold is selected non-randomly and contains an unequal number of observations. Applying this approach enables researchers to evaluate the reliability of each dataset involved in an assessment and quantify the impact of weighting by statistical analysis of the corresponding model. We demonstrate theefficacy of this method through the evaluation of heat capacity data of pure iron and magnesium.Keywords: Weighting, K-fold Cross-Validation, Heat capacity, CALPHAD
DOI: 10.15468/dl.9xzdac
title: Occurrence Download

description: A dataset containing 47 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium prasinum Lindl."
 ]
}

 The dataset includes 47 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170026-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.48577/jpl.urdehu
title: Methane Mapping with Future Satellite Imaging Spectrometers

description: This study evaluates a new generation of satellite imaging spectrometers to measure point source methane emissions from anthropogenic sources. We used the Airborne Visible and Infrared Imaging Spectrometer Next Generation(AVIRIS-NG) images with known methane plumes to create two simulated satellite products. One simulation had a 30 m spatial resolution with ~200 Signal-to-Noise Ratio (SNR) in the Shortwave Infrared (SWIR) and the other had a 60 m spatial resolution with ~400 SNR in the SWIR; both products had a 7.5 nm spectral spacing. We applied a linear matched filter with a sparsity prior and an albedo correction to detect and quantify the methane emission in the original AVIRIS-NG images and in both satellite simulations. We also calculated an emission flux for all images. We found that all methane plumes were detectable in all satellite simulations. The flux calculations for the simulated satellite images correlated well with the calculated flux for the original AVIRIS-NG images. We also found that coarsening spatial resolution had the largest impact on the sensitivity of the results. These results suggest that methane detection and quantification of point sources will be possible with the next generation of satellite imaging spectrometers.
DOI: 10.48577/jpl.qvpptp
title: Use of Observing System Simulation Experiments in the U.S.

description: The NOAA Science Advisory Board appointed a Task Force to prepare a white paper on the 44 use of Observing System Simulation Experiments (OSSEs). Considering the importance and 45 timeliness of this topic and based on this white paper, here we briefly review the use of OSSEs in 46 the U.S., discuss their values and limitations, and develop five recommendations for moving 47 forward: national coordination of relevant research efforts; acceleration of OSSE development 48 for Earth system models; consideration of the potential impact on OSSEs of deficiencies in the 49 current data assimilation and prediction system; innovative and new applications of OSSEs; and 50 extension of OSSEs to societal impacts. OSSEs can be complemented by calculations of forecast 51 sensitivity to observations, which simultaneously evaluate the impact of different observation 52 types in a forecast model system.
DOI: 10.25549/independent-c69-45064
title: Officer interviews (3 of 3), 1979 - 1991 June 21

description: Officer interviews (3 of 3), 1979 - 1991 June 21. Collection of material including: memo re summary of testimony of former police commissioners on the subject of the citizen complaint process, memo re officers mentioned in Dwayne Jone's complaint, memo re personnel file review, etc. 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.yf4c4z
title: An evaluation of remotely sensed and in-situ data sufficiency for SGMA-scale groundwater studies in the Central Valley, California

description: California’s Central Valley aquifer represents a critical freshwater resource for the state, providing drinking water to 6.5 million residents and irrigation water for the nation. As a partially non-renewable resource, increasing demands have led to a steady decline of aquifer water levels, leading to irreversible compaction and land subsidence. The Sustainable Groundwater Management Act of California (SGMA), instituted in 2014, requires high-priority regions to establish sustainability plans by 2020-2022 that mitigate groundwater depletion. Here we describe the various in situ and satellite data sets available to support the analysis of SGMA compliance. Many regions within the Central Valley lack groundwater monitoring wells or continuous well data, rendering in-situ monitoring approaches challenging. NASA’s Gravity Recovery and Climate Experiment (GRACE) mission can yield valuable information about groundwater storage changes at sub-basin scale. Interferometric Surface Aperture Radar (InSAR) measurements can map land subsidence, and Global Positioning System (GPS) measurements can describe crustal uplift. Yet, all of these measurements have differences in resolution, coverage, discretization and record length. Here we detail the various datasets useful for Central Valley sub-basins and provide an analysis of gaps and other issues in their sufficiency in the context of SGMA-related analysis. Finally, we offer next steps or recommendations on data treatment and integration.
DOI: 10.48577/jpl.bzwowg
title: Assessment of sampling sufficiency for low-cost satellite missions: Application to PREFIRE

description: The Polar Radiant Energy in the Far Infrared Experiment (PREFIRE) mission will, for the first time, systematically document the far-infrared (15-54 μm) spectral region from space. The environmental sampling characteristics of the PREFIRE CubeSats, defined in terms of surface temperature (Tsfc) and column water vapor (CWV) are evaluated for a range of possible orbit scenarios for both clear-sky and all-sky conditions over a variety of surface types (land, ocean, sea ice, snow, glacier ice) at both poles. Using NASA Aqua’s Atmospheric Infrared Sounder (AIRS) and Advanced Microwave Sounding Unit (AMSU) retrievals to define the climatological ranges of Tsfc and CWV, the fraction of environmental regimes observed by distinct PREFIRE configurations is evaluated. The sampling rates within any single year for two-orbit CubeSat launches spanning both polar regions are ~75% for clear-sky and ~85% for all-sky compared to the AIRS/AMSU climatology. Decreasing mission duration from twelve to three months decreases sampling much more (10-20%) than decreasing the swath width from fifteen to eight footprints (6-9%). For a single CubeSat launch, a 98° orbital inclination provides slightly better sampling than either 93° or 103°. For a two-orbit CubeSat launch, a combination of 93°+98° is somewhat preferable to 103°+98°. Finally, a 50% data loss rate simulated by dropping out every other orbit leads to only a modest 7-8% reduction in sampling from full data coverage. This statistical analysis demonstrates that low-cost platforms could offer similar coverage as present-day flagship missions.
DOI: 10.15468/dl.fxhtpv
title: Occurrence Download

description: A dataset containing 1157 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Lachnum virgineum (Batsch) P.Karst."
 ]
}

 The dataset includes 1157 records from 86 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001444-150410134957023/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.bqqyb4
title: Occurrence Download

description: A dataset containing 23 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Dendrobium prostratum Ridl."
 ]
}

 The dataset includes 23 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0170033-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/independent-ouc1904479
title: Justice for Janitors, 1990 June 1 - 1991 July 3

description: Collection of justice for janitors interviews, 1990 June 1 - 1991 July 3. PART OF A SERIES: The series relates to the work product of Sibley & Austin, whose staff contributed to the Commission's probe of excessive force allegations brought against the LAPD. Included in the series are memoranda, witness testimonies, interview summaries, copies of officers' background files, after-action summaries and reports, and notes taken by the firm. Materials relate to four major areas of study undertaken by the firm: the Justice for Janitors labor demonstration of 1990, the jail ward of County/USC Medical Center, Los Angeles city jails, and a review of the LAPD's Background Investigation Unit.
DOI: 10.48577/jpl.ezltpu
title: An Asymmetric Eclipse Seen Towards the Pre-Main Sequence Binary System V928 Tau

description: K2 observations of the weak-lined T Tauri binary V928 Tau A+B show the detection of a single, asymmetric eclipse which may be due to a previously unknown companion eclipsing one component of the binary at an intermediate separation (orbital period &gt; 66 days). Over an interval of about 9 hours, one component of the binary dims by around 60%, returning to its normal brightness about 5 hours later. From modeling of the eclipse shape we find evidence that the eclipsing companion may be surrounded by a disk or a vast ring system. A search in ground based archival data does not reveal any other convincing eclipses. V928 Tau is a previously known astrometric binary, with an orbital period inferred to be greater than 58 years (Schaefer et al. 2014). We present a new epoch of astrometry which can be used to further refine the orbit of the binary in the future, and place constraints on the possible orbital periods of the eclipsing companion.
DOI: 10.25549/independent-c69-45050
title: Officer interviews (3 of 3), 1979 - 1991 June 21

description: Officer interviews (3 of 3), 1979 - 1991 June 21. Collection of material including: memo re summary of testimony of former police commissioners on the subject of the citizen complaint process, memo re officers mentioned in Dwayne Jone's complaint, memo re personnel file review, etc. 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.qvfdzw
title: A Systems Perspective on the Environmental Prediction Enterprise

description: Our success with environmental prediction could be considered among humankind’s most remarkable developments over the past fifty years (Bauer et al. 2015). It protects lives and property, and helps us advance the well-being of society. Vast changes have occurred recently to the complexity and scope of our weather enterprise. Given its importance to society, there is reason to optimize our approaches for advancing its scope and capabilities. This essay highlights three points that may help facilitate this optimization, with an overarching suggestion to more overtly embrace a systems (engineering) approach:1) Continued emphasis should be placed on advancing Earth System Science as the foundational knowledge that advances weather prediction as well as the more holistic scope of Environmental Prediction (EP). 2) The complexity and coupling of the social, programmatic, observation, modeling, analytic and interdisciplinary landscapes within the EP Enterprise suggests adding a system engineering perspective/approach to further optimize outcomes and limit vulnerabilities.3) The consideration of the enterprise as a data to information flow problem highlights opportunities and focal points to leverage that could help to advance the societal benefits derived from the EP Enterprise. A generalized, highly simplified, systems perspective on the advancement of Earth science and environmental prediction is offered by framing a simple equation involving the synthesis of observations, models and programmatics, that in turn yield science and applications benefits. Simplifications and derivatives of this equation are used to distill challenges and opportunities for further advancing enterprise benefits, and to motivate considerations of scope and priorities related to our community’s decadal survey(s) (e.g. ESAS, 2017).