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1,256 Research products, page 1 of 126

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  • Open Access
    Authors: 
    Santiago-Vera, Josué; Ramírez, Alonso;
    Publisher: Zenodo
    Project: NSF | Luquillo LTER Program 4: ... (0620910)

    Meiofaunal morphospecies observed in Quebrada Prieta, Luquillo Experimental Forest, Puerto Rico

  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Tyson Swetnam; Natasha Stavros; Ty Tuff; Cibele Amaral;
    Publisher: Zenodo
    Project: NSF | CyVerse: Cyberinfrastruct... (1743442), NSF | CyVerse: Cyberinfrastruct... (1743442)

    This is the first pre-release upon creation of the pages. Update (2022-07-23) Created MkDocs-Material theme Setup Actions MkDocs render Jupyter Notebooks Set pages to default github.io

  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Tyson L. Swetnam; Michael Culshaw-Maurer; Michele Cosi; Mary Margaret Sprinkle; Amanda Cooksey; Edwin Skidmore;
    Publisher: Zenodo
    Project: NSF | CyVerse: Cyberinfrastruct... (1743442), NSF | CyVerse: Cyberinfrastruct... (1743442)

    Materials and instructions for Container Camp 2022. Includes: Basic and Advanced content. Docker and Singularity containerization instructions and management. Introduction to Kubernetes, JetStream2. Instructions for GitHub Actions, and CodeSpaces. In class discussions and FAQs.

  • Open Access English
    Authors: 
    Johnson;
    Publisher: Zenodo
    Project: NSF | GeoPRISMS Office Support (1339783), NSF | GeoPRISMS Office Support (1339783)

    University of Washington: Project Overview – Our program used five temperature-salinity-turbidity instruments and 20 temperature loggers as add-on sensor packages to Ocean Bottom Seismometers (OBS) in order to further our understanding of turbidity flows on the SE Alaskan margin. These sensor packages would be added to existing OBS deployment frames as part of the marine component of the EarthScope/GeoPRISM program for the Alaskan margin. The recovered sensor data would be used to examine correlations between recently-triggered turbidity currents that envelop the OBS instruments and local/distant seismic events. Possible external correlations may also include storms, near-bottom water column behavior, and spontaneous slope failures as possible triggering mechanisms for sediment slope failures. Recent studies of Cascadia, Costa Rica, Sumatra and Tohoku margins have shown that sediment gravity flows on continental margins occur far more frequently than previously assumed, and these flows can have both local and distant triggering sources. The relatively high occurrence intervals of these turbidity flows, with multiple events per year detected on several globally-distributed margins, suggests the need to make these observations on the Alaskan margin as a valuable experiment-of-opportunity. Evaluating the frequency, geographical scale, and geological environment of these gravity-driven slope failures on an active and diverse continental margin such as Alaska has major impact on our understanding of (a) the source-to-sink sediment migration component of the global carbon cycle, (2) the tsunami-genic potential of steep sediments on unstable slopes that overlie an active subduction zone, and (3) the ability to use of turbidite frequency in sediment cores as indicators of the recurrence intervals for great mega-thrust earthquakes. Data to be interpreted in this proposal include (a) temperature, (b) salinity, (c) water column turbidity, and also (d) seismic accelerations from the OBS instruments. Additional data required to evaluate correlations include (a) meteorological data, for example to determine the timing and intensity of storms, (b) satellite altimetry and temperature data to document upper-ocean eddies in the water column that may extend into the deep ocean, (c) earthquake seismic data from global networks and (d) from adjacent Transportable Array instruments, and (e) geodesy data from local GPS stations that can identify slow slip events.

  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Bolun "Namir" Xia; Vipula D. Rawte; Aparna Gupta; Mohammed J. Zaki;
    Publisher: Zenodo
    Project: NSF | III: EAGER: Knowledge Gra... (1738895), NSF | III: EAGER: Knowledge Gra... (1738895)

    These six zipped folders contain the saved weights of the best frozen model for FETILDA (w/BERT, w/FinBERT, and w/Longformer) obtained from experimenting on the US Bank dataset that we collected, which contains 10-K reports submitted by US banks from 2006 to 2016. Three of the six zipped folders contain weights obtained using historical scores as features in training FETILDA, and the other three contain weights obtained without doing so. They are clearly labeled in the names of the folders and files. The files are in the PyTorch .pt format.

  • Other research product . Other ORP type . 2022
    Open Access
    Authors: 
    Bolun "Namir" Xia; Vipula D. Rawte; Aparna Gupta; Mohammed J. Zaki;
    Publisher: Zenodo
    Project: NSF | III: EAGER: Knowledge Gra... (1738895), NSF | III: EAGER: Knowledge Gra... (1738895)

    These two zipped folders contain the saved weights of the best model for FETILDA (w/BERT, w/FinBERT, and w/Longformer) obtained from replicating the experiments on the FIN10K dataset as done in Tsai and Wang (2017) with our FETILDA model, both frozen and unfrozen. The files are in the PyTorch .pt format.

  • Other research product . Collection . Other ORP type . 2022
    Open Access English
    Authors: 
    Faïn, Xavier; Rhodes, Rachael H; Place, Philip; Petrenko, Vasilii V; Fourteau, Kévin; Chellman, Nathan J; Crosier, Edward; McConnell, Joseph R; Brook, Edward J; Blunier, Thomas; +2 more
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science
    Project: NSF | Collaborative Research: C... (1204176), NSF | Collaborative Research: R... (1406219), NSF | PIRE: International Colla... (0968391), NSF | Development of High-Resol... (0221515), NSF | Collaborative Research: R... (1406236), NSF | Biomass Burning, Dust, Se... (0909541)

    We present high-resolution measurements of CO mixing ratios from ice cores drilled at five different sites on the Greenland ice sheet. An optical-feedback cavity-enhanced absorption spectrometer (OF-CEAS) was coupled with continuous melter systems and operated during four analytical campaigns conducted between 2013 and 2019 at the Desert Research Institute (DRI, USA) and the Institut des Géoscience de l'Environnement (IGE, France). The CFA-based CO measurements exhibit excellent external precision (ranging from 3.3 to 6.6 ppbv, 1 sigma) and achieve consistently low blanks (ranging from 4.1 +/- 1.2 to 12.6 +/- 4.4 ppbv), enabling paleoatmospheric interpretations. Consistent baseline CO records from four Greenlandic sites (PLACE, D4, NGRIP, and NEEM) are combined to produce a multisite average ice core reconstruction of past atmospheric CO for the Northern Hemisphere high latitudes, covering the period from 1700 to 1957 CE. Such a reconstruction should be taken as an upper bound of past atmospheric CO abundance.

  • Other research product . Collection . Other ORP type . 2022
    Open Access English
    Authors: 
    Andrews, John T;
    Publisher: PANGAEA - Data Publisher for Earth & Environmental Science
    Project: NSF | Timing and Paleoceanograp... (1804504)

    Core MD99-2317 was taken from the Grivel Basin, East Greenland ) (68.103°N, 27.8615°W, 536 m wd, 25.07 m long), offshore from the 60,000 km2 early Tertiary basalt outcrop, and from an area subjected to the transport of icebergs from local and regional tidewater glaciers. Radiocarbon dates for this core are reported in Jennings et al (2011). Grain size analysis of the 240 µm), volume % of sand, and measures of the sortable silt % and the mean sortable silt grain size, which can be correlated with changes in the flow speed of bottom currents . Tables 3 and 4 report replicate runs on X-ray diffraction estimates of mineral weight % and Malvern-based grain size volume % for a series of 7 paired samples (A versus B) taken across the 10-cm diameter core in order to investigate the variability of six non-clay and clay minerals and six grain size variables in adjacent samples. Between sample Analysis-of-Variance on the data set indicated only a limited number of statistically significant differences.

  • Other research product . Other ORP type . 2021
    Open Access
    Authors: 
    Jeffrey Carver; Sandra Gesing; Daniel S. Katz; Karthik Ram; Nic Weber;
    Publisher: Zenodo
    Project: NSF | SI2-S2I2 Conceptualizatio... (1743188), NSF | SI2-S2I2 Conceptualizatio... (1743188)

    To better understand research software user and developer communities, the PI team of the Conceptualization of the US Research Software Sustainability Institute (URSSI) conducted a survey of research software users and developers. The focus of the survey was to gather information to help identify how to increase the sustainability of research software. To gather a broad range of perspectives, the survey was distributed to 25,000 NSF and 25,000 NIH PIs whose projects involve research software, as well as mailing lists of interested people such as the WSSSPE email list. In addition, the PI team used snowballing by asking people to forward the survey to others who might be interested. This effort is part of the URSSI conceptualization project, which seeks to understand the diverse challenges and barriers that the research software community faces. The survey received 1194 complete or partial responses to the survey. This dataset is the raw data set of the survey responses exported from Qualtrics and anonymized.

  • Open Access English
    Authors: 
    Chang, Benjamin K.; Zhou, Jin-Jian; Lee, Nien-En; Bernardi, Marco;
    Publisher: Materials Cloud
    Country: United States

    Predicting the electrical properties of organic molecular crystals (OMCs) is challenging due to their complex crystal structures and electron-phonon (e-ph) interactions. Charge transport in OMCs is conventionally categorized into two limiting regimes – band transport, characterized by weak e-ph interactions, and charge hopping due to localized polarons formed by strong e-ph interactions. However, between these two limiting cases there is a less well understood intermediate regime where polarons are present but transport does not occur via hopping. Here we show a many-body first-principles approach that can accurately predict the carrier mobility in OMCs in the intermediate regime and shed light on its microscopic origin. Our approach combines a finite-temperature cumulant method to describe strong e-ph interactions with Green-Kubo transport calculations. We apply this parameter-free framework to naphthalene crystal, demonstrating electron mobility predictions within a factor of 1.5–2 of experiment between 100–300 K. Our analysis reveals that electrons couple strongly with both inter- and intramolecular phonons in the intermediate regime, as evidenced by the formation of a broad polaron satellite peak in the electron spectral function and the failure of the Boltzmann transport equation (BTE). Our study advances quantitative modeling of charge transport in complex organic crystals. This dataset contains input and output files required to reproduce the BTE results presented in our work.

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