35 datasets found
  1. c

    Data from: Facet-dependent strain determination in electrochemically...

    • cxidb.org
    • osti.gov
    Updated Mar 19, 2021
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    Jerome Carnis (2021). Facet-dependent strain determination in electrochemically synthetized platinum model catalytic nanoparticles [Dataset]. http://doi.org/10.11577/1771456
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    Dataset updated
    Mar 19, 2021
    Authors
    Jerome Carnis
    License

    CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
    License information was derived automatically

    Description

    Please check the README file for more information about the dataset.

  2. AIMD training data for H2 adsorption on MoxCy facets for machine learning...

    • zenodo.org
    zip
    Updated Nov 22, 2024
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    Woodrow Wilson; Neeraj Rai; John Michael Lane; Chinmoy Saha; Sony Severin; Vivek Bharadwaj; Woodrow Wilson; Neeraj Rai; John Michael Lane; Chinmoy Saha; Sony Severin; Vivek Bharadwaj (2024). AIMD training data for H2 adsorption on MoxCy facets for machine learning model [Dataset]. http://doi.org/10.5281/zenodo.14206466
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    zipAvailable download formats
    Dataset updated
    Nov 22, 2024
    Dataset provided by
    Zenodohttp://zenodo.org/
    Authors
    Woodrow Wilson; Neeraj Rai; John Michael Lane; Chinmoy Saha; Sony Severin; Vivek Bharadwaj; Woodrow Wilson; Neeraj Rai; John Michael Lane; Chinmoy Saha; Sony Severin; Vivek Bharadwaj
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    This data is used to train the MACE model for modeling hydrogen dissociation on molybdenum carbide surfaces.

  3. Medical interview score data from PostCC-OSCE and programs for an extended...

    • data.niaid.nih.gov
    • datadryad.org
    zip
    Updated Jun 12, 2024
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    Masaki Uto; Jun Tsuruta; Kouji Araki; Maomi Ueno (2024). Medical interview score data from PostCC-OSCE and programs for an extended many-facet IRT model [Dataset]. http://doi.org/10.5061/dryad.tmpg4f56q
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    zipAvailable download formats
    Dataset updated
    Jun 12, 2024
    Dataset provided by
    Tokyo Medical and Dental Universityhttp://www.tmd.ac.jp/
    University of Electro-Communications
    Authors
    Masaki Uto; Jun Tsuruta; Kouji Araki; Maomi Ueno
    License

    https://spdx.org/licenses/CC0-1.0.htmlhttps://spdx.org/licenses/CC0-1.0.html

    Description

    Objective structured clinical examinations (OSCEs) are widely used performance assessments for medical and dental students. A common limitation of OSCEs is that the evaluation results depend on the characteristics of raters and the scoring rubric. To overcome this limitation, item response theory (IRT) models such as the many-facet models have been proposed to estimate examinee abilities while accounting for the characteristics of raters and evaluation items in a rubric. However, conventional IRT models have two impractical assumptions: constant rater severity across all evaluation items in a rubric and an equal interval rating scale among evaluation items, which can decrease model fitting and ability measurement accuracy. To resolve this problem, we propose a new IRT model that relaxes these assumptions. We demonstrate the effectiveness of the proposed model by applying it to actual data collected from a medical interview test conducted at Tokyo Medical and Dental University as part of a post-clinical clerkship (PostCC) OSCE. The experimental results showed that the proposed model fit our OSCE data well and measured ability accurately. Furthermore, it provided abundant information on rater and item characteristics that conventional models cannot, helping us to better understand rater and item properties. This dataset includes the actual score data collected from the above-mentioned medical interview test in a PostCC OSCE, as well as the program for estimating the parameters of the proposed IRT model.

  4. a

    India: Ecological Facets Landform Classes

    • hub.arcgis.com
    Updated Jan 31, 2022
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    GIS Online (2022). India: Ecological Facets Landform Classes [Dataset]. https://hub.arcgis.com/maps/51077b4ac9c3480fb8b67874e22bb27d
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    Dataset updated
    Jan 31, 2022
    Dataset authored and provided by
    GIS Online
    Area covered
    Description

    Landforms are large recognizable features such as mountains, hills and plains; they are an important determinant of ecological character, habitat definition and terrain analysis. Landforms are important to the distribution of life in natural systems and are the basis for opportunities in built systems, and therefore landforms play a useful role in all natural science fields of study and planning disciplines.Dataset SummaryPhenomenon Mapped: LandformsUnits: MetersCell Size: 231.91560581932 metersSource Type: ThematicPixel Type: 8-bit unsigned integerData Coordinate System: WGS 1984Mosaic Projection: Web Mercator Auxiliary SphereExtent: GlobalSource: EsriPublication Date: May 2016ArcGIS Server URL: https://landscape7.arcgis.com/arcgis/In February 2017, Esri updated the World Landforms - Improved Hammond Method service with two display functions: Ecological Land Units landform classes and Ecological Facets landform classes. This layer represents Ecological Facets landform classes. You can view the Ecological Land Units landform classes by choosing Image Display, and changing the Renderer. This layer was produced using the Improved Hammond Landform Classification Algorithm produced by Esri in 2016. This algorithm published and described by Karagulle et al. 2017: Modeling global Hammond landform regions from 250-m elevation data in Transactions in GIS.The algorithm, which is based on the most recent work in this area by Morgan, J. & Lesh, A. 2005: Developing Landform Maps Using Esri’s Model Builder., Esri converted Morgan’s model into a Python script and revised it to work on global 250-meter resolution GMTED2010 elevation data. Hammond’s landform classification characterizes regions rather than identifying individual features, thus, this layer contains sixteen classes of landforms:Nearly flat plainsSmooth plains with some local reliefIrregular plains with moderate relief Irregular plains with low hillsScattered moderate hillsScattered high hillsScattered low mountainsScattered high mountainsModerate hillsHigh hills Tablelands with moderate reliefTablelands with considerable reliefTablelands with high relief Tablelands with very high relief Low mountainsHigh mountainsTo produce these classes, Esri staff first projected the 250-meter resolution GMTED elevation data to the World Equidistant Cylindrical coordinate system. Each cell in this dataset was assigned three characteristics: slope based on 3-km neighborhood, relief based on 6 km neighborhood, and profile based on 6-km neighborhood. The last step was to overlay the combination of these three characteristics with areas that are exclusively plains. Slope is the percentage of the 3-km neighborhood occupied by gentle slope. Hammond specified 8% as the threshold for gentle slope. Slope is used to define how flat or steep the terrain is. Slope was classified into one of four classes: Percent of neighborhood over 8% of slopeSlope Classes0 - 20%40021% -50%30051% - 80%200>81% 100Local Relief is the difference between the maximum and minimum elevation within in the 6-km neighborhood. Local relief is used to define terrain how rugged or the complexity of the terrain's texture. Relief was assigned one of six classes:Change in elevationRelief Class ID0 – 30 meters1031 meter – 90 meters2091 meter – 150 meters30151 meter – 300 meters40301 meter – 900 meters50>900 meters60The combination of slope and relief begin to define terrain as mountains, hills and plains. However, the difference between mountains or hills and tablelands cannot be distinguished using only these parameters. Profile is used to determine tableland areas. Profile identifies neighborhoods with upland and lowland areas, and calculates the percent area of gently sloping terrain within those upland and lowland areas. A 6-km circular neighborhood was used to calculate the profile parameter. Upland/lowland is determined by the difference between average local relief and elevation. In the 6-km neighborhood window, if the difference between maximum elevation and cell’s elevation is smaller than half of the local relief it’s an upland. If the difference between maximum elevation and cell’s elevation is larger than half of the local relief it’s a lowland. Profile was assigned one of five classes:Percent of neighborhood over 8% slope in upland or lowland areasProfile ClassLess than 50% gentle slope is in upland or lowland0More than 75% of gentle slope is in lowland150%-75% of gentle slope is in lowland250-75% of gentle slope is in upland3More than 75% of gentle slope is in upland4Early reviewers of the resulting classes noted one confusing outcome, which was that areas were classified as "plains with low mountains", or "plains with hills" were often mostly plains, and the hills or mountains were part of an adjacent set of exclusively identified hills or mountains. To address this areas that are exclusively plains were produced, and used to override these confusing areas. The hills and mountains within those areas were converted to their respective landform class.The combination of slope, relief and profile merged with the areas of plains, can be better understood using the following diagram, which uses the colors in this layer to show which classes are present and what parameter values produced them:What can you do with this layer?This layer is suitable for both visualization and analysis. It can be used in ArcGIS Online in web maps and applications and can be used in ArcGIS Desktop. This layer is part of a larger collection of landscape layers that you can use to perform a wide variety of mapping and analysis tasks.The Living Atlas of the World provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.Geonet is a good resource for learning more about landscape layers and the Living Atlas of the World. To get started see the Living Atlas Discussion Group.The Esri Insider Blog provides an introduction to the Ecophysiographic Mapping project.

  5. d

    Data from: Evaluation of the horizontal approach to the medial malleolar...

    • search.dataone.org
    • datadryad.org
    Updated Mar 19, 2024
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    Jun Yan (2024). Evaluation of the horizontal approach to the medial malleolar facet in sagittal talar fractures through dorsiflexion and plantarflexion positions [Dataset]. http://doi.org/10.5061/dryad.r7sqv9skk
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    Dataset updated
    Mar 19, 2024
    Dataset provided by
    Dryad Digital Repository
    Authors
    Jun Yan
    Time period covered
    Jan 1, 2024
    Description

    Background Talar fractures often require osteotomy during surgery to achieve reduction and screw fixation of the fractured fragments due to limited visualization and operating space of the talar articular surface. The objective of this study was to evaluate the horizontal approach to the medial malleolus facet by maximizing exposure through dorsiflexion and plantarflexion positions. Methods In dorsiflexion, plantarflexion, and functional foot positions, we respectively obtained the anterior and posterior edge lines of the projection of the medial malleolus on the medial malleolar facet. The talar model from Mimics was imported into Geomagic software for image refinement. Then Solidworks software was used to segment the medial surface of the talus and extend the edge lines from the three positions to project them onto the "semicircular" base for 2D projection. The exposed area in different positions, the percentage of total area it represents, and the anatomic location of the insertion..., DICOM-formatted CT-scan images of each patient were imported into Mimics software (21.0 ; Materialise, Leuven, Belgium). We removed the soft tissue and affected bones by the function of image segmentation, region growth and multiple slice editing of Mimics software, respectively. A total of 273 virtual foot and ankle models were created. In dorsiflexion, plantarflexion, and functional foot positions, we respectively obtained the anterior and posterior edge lines of the projection of the medial malleolus on the medial malleolar facet (Fig. 1). At the same time, we found that the medial malleolar facet had a shape resembling a “semicircle†, and regardless of whether the foot was in the functional position, dorsiflexed, or plantarflexed, the movement of the medial malleolus occurred within this "semicircular" region (Fig. 2A). Tracing the outline of the foot in the three positions on the talus, it is not difficult to observe that plantarflexion and dorsiflexion expand the exposure area on ..., , # Evaluation of the horizontal approach to the medial malleolar facet in sagittal talar fractures through dorsiflexion and plantarflexion positions

    In the positions of foot dorsiflexion, plantarflexion, and functional, we respectively obtained the anterior and posterior edge lines of the projection of the medial malleolus on the medial malleolar facet. The talar model from Mimics was imported into Geomagic software for image refinement. Then Solidworks software was used to segment the medial surface of the talus and extend the edge lines from the three positions to project them onto the "semicircular" base for 2D projection. The exposed area in different positions, the percentage of total area it represents, and the anatomic location of the insertion point at the groove between the anteroposternal protrusions of the medial malleolus were calculated. The mean total area of the "semicircular" region on the medial malleolus surface of the talus was 542.10 ± 80.05 mm2. In the functional ...

  6. n

    Scripts and data for: Integrating different facets of diversity into food...

    • data.niaid.nih.gov
    • datadryad.org
    zip
    Updated Apr 12, 2024
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    Laurie Anne Wojcik; Toni Klauschies; Ellen van Velzen; Christian Guill; Ursula Gaedke (2024). Scripts and data for: Integrating different facets of diversity into food web models: how adaptation among and within functional groups shape ecosystem functioning [Dataset]. http://doi.org/10.5061/dryad.ttdz08m4x
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    zipAvailable download formats
    Dataset updated
    Apr 12, 2024
    Dataset provided by
    University of Potsdam
    Authors
    Laurie Anne Wojcik; Toni Klauschies; Ellen van Velzen; Christian Guill; Ursula Gaedke
    License

    https://spdx.org/licenses/CC0-1.0.htmlhttps://spdx.org/licenses/CC0-1.0.html

    Description

    Adaptation of communities to environmental fluctuations can emerge from different facets of biodiversity, which may impact ecosystem functioning differently. Previous work examined how ecosystem functions can be influenced by two sources of adaptive potential: sorting (i.e., changes in community composition due to fitness differences) can occur when multiple species or groups are present (richness), and trait adaptability (i.e., trait adjustments within species or functional groups) can emerge from genetic or phenotypic diversity. However, their effect is typically studied separately, and often in the context of only one trophic level. Therefore, we used a bitrophic trait-based model varying in richness and in the presence of trait adaptability at each trophic level, to investigate how sorting and trait adaptability, at one or two trophic levels, separately or jointly shape ecosystem functions. We found that the adaptive potential emerging from any facet of diversity-induced changes in trophic interactions, in turn, affects biomass distributions within and across trophic levels, dynamical behaviour, and synchrony of biomass dynamics within a trophic level. Particularly, sorting and trait adaptability could contribute to a similar degree and at a similar time to temporal changes in ecosystem functions, but their respective contribution depended on the speed of trait adaptation, the trait range between similar functional groups, and trophic interactions. We thus suggest to consider multiple facets of diversity and their corresponding sources of adaptive potential to deepen our mechanistic understanding of ecosystem functioning, especially in a context of rapid biodiversity change. Methods The datasets were generated and not collected in the field and the laboratory. We briefly summarise the methods used, which are extensively explained in the associated Oikos article. We solved numerically the ordinary differential equations of an an extended Rosenzweig-MacArthur predator-prey model in C using the SUNDIALS CVODE solver 5.7.0}. Then, we used several packages in Python 3.10 among which NumPy, Pandas, and Matplotlib to analyse the biomass and trait dynamics, and to quantify ecosystem functions. We notably compared the temporal means and variation (coefficient of variation) of ecosystem functions and properties (e.g. total biomass, production, biomass-weighted mean trait, synchrony of prey and predators, and the ratio between prey losses due to predation and the sum of prey losses due to competition and predation) of food webs with different sources of adaptive potential.

  7. d

    The Floridan Aquifer Collaborative Engagement for Sustainability (FACETS)...

    • search.dataone.org
    • hydroshare.org
    • +1more
    Updated Jan 25, 2025
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    Nathan George Frederick Reaver; Dogil Lee; Rob De Rooij; David Kaplan; Wendy Graham (2025). The Floridan Aquifer Collaborative Engagement for Sustainability (FACETS) project SWAT-MODFLOW model of the Santa Fe River, Florida [Dataset]. http://doi.org/10.4211/hs.19e8b36afa614684bbb33bce426983d7
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    Dataset updated
    Jan 25, 2025
    Dataset provided by
    Hydroshare
    Authors
    Nathan George Frederick Reaver; Dogil Lee; Rob De Rooij; David Kaplan; Wendy Graham
    Time period covered
    Jan 1, 1980 - Dec 31, 2018
    Area covered
    Description

    This resource contains the SWAT-MODFLOW model for the Santa Fe River of North Central Florida used in the Floridan Aquifer Collaborative Engagement for Sustainability (FACETS) project. The FACETS project was funded by the USDA National Institute of Food and Agriculture (Award Number: 2017-68007-26319) to promote the economic sustainability of agriculture and silviculture in North Florida and South Georgia while protecting water quantity, quality, and habitat in the Upper Floridan Aquifer and the springs and rivers it feeds (https://floridanwater.research.ufl.edu/). SWAT-MODFLOW couples the Soil and Water Assessment Tool (SWAT) to the U.S. Geological Survey modular finite-difference flow model (MODFLOW) to produce an integrated surface-groundwater model (https://swat.tamu.edu/software/swat-modflow/). Within SWAT-MODFLOW, SWAT handles most surface and soil processes, MODFLOW handles groundwater processes, and both models interact to simulate stream flows.

    The SWAT portion of this model was developed using USGS digital elevation models, the 2017 Statewide Land Use / Land Cover map of the Florida Department of Environmental Protection (FDEP), Florida Department of Health septic tank data, STATSGO soil maps, the Public Land Survey System, and NLDAS weather data. Agricultural and silvicultural production land uses and management practices implemented within SWAT were co-developed with stakeholders in a participatory modeling process (PMP) and included row crops (corn-peanut and corn-carrot-peanut rotations) forage crops (bermudagrass hay and pasture), and production forestry (slash pine). Additional land uses implemented in SWAT included urban, low-density residential, septic tanks, rapid infiltration basins, fertilized lawns, natural grass, wetlands, and open water. The MODFLOW portion of the model was developed from the larger North Florida Southeast Georgia (NFSEG) MODFLOW model (version 1.0) as developed by the St John’s River and Suwannee River Water Management Districts. A detailed description of the complete model development process can be found in a document within this resource.

    Calibration of the model was conducted using a Bayesian Sample-Importance-Resample method. Data used in the model calibration included: 1) USGS discharge data (Stations 02322500, 02322700, 02322800, and 02321500); 2) USGS operational Simplified Surface Energy Balance (SSEBop) actual evapotranspiration; and 3) Upper Floridan Aquifer potentiometric surfaces from FDEP. The calibration period of the model was 2010-2018 and the validation period was 1980-2009.

  8. Model comparison for SGTs.

    • plos.figshare.com
    xls
    Updated Jun 1, 2023
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    Federico Mancinelli; Jonathan Roiser; Peter Dayan (2023). Model comparison for SGTs. [Dataset]. http://doi.org/10.1371/journal.pcbi.1009134.t003
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    xlsAvailable download formats
    Dataset updated
    Jun 1, 2023
    Dataset provided by
    PLOShttp://plos.org/
    Authors
    Federico Mancinelli; Jonathan Roiser; Peter Dayan
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    The most parsimonious model accounts for data through adding distance and vehicular guidability features, and their multiplicative interaction. I-scores were explicative of distance sensitivities, but only in high influence blocks.

  9. m

    Instances for “Rapid Influence Maximization on Social Networks: The Positive...

    • data.mendeley.com
    Updated Jun 20, 2022
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    S. Raghavan (2022). Instances for “Rapid Influence Maximization on Social Networks: The Positive Influence Dominating Set Problem" [Dataset]. http://doi.org/10.17632/ywfgkk5pky.2
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    Dataset updated
    Jun 20, 2022
    Authors
    S. Raghavan
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    We provide the instances used in the paper “Rapid Influence Maximization on Social Networks: The Positive Influence Dominating Set Problem”, by S. Raghavan and Rui Zhang, published in INFORMS Journal on Computing (https://doi.org/10.1287/ijoc.2021.1144). This repository contains the 100 instances used in the paper.

    All the instances used in the paper are provided in a compressed archive. The accompanying data is contained in the following file: • PIDS_Instances.zip

    Description: There is one main folder, which contains 100 instances based on 10 real-world graphs.

    For graphs Gnutella, Anybeat, Advogato, Escorts, Hamster, Ning, and Delicious, the setting is as follows: For each instance file, there are m + 2 lines. The first m lines provide the edges in the graphs. Nodes are labeled from 0 to n where n is the largest number in the first m lines. The (m + 1)th line contains the weight (b) for each node. The (m + 2)th line contains the threshold value (g) for each node.

    For graphs Flixster, Youtube, and Lastfm, the setting is as follows: Each real-world graph “G” is described by the file named “G_Graph.txt” which contains the edges in the graph. Nodes are labeled from 0 to n, where n is the largest number in the file. Each line provides the two end nodes of an edge. The 10 instances associated with each graph “G” are provided in the 10 files named “G_i.txt” for i in {0, 1, · · · , 9}. In each file, there are two lines. The first line contains the weight (b) for each node. The second line contains the threshold value (g) for each node.

    The excel file “PIDS_Results.xlsx” reports, for each instance, the upper and lower bounds obtained in the paper.

  10. f

    Data from: Propane Dehydrogenation on Platinum Catalysts: Identifying the...

    • acs.figshare.com
    txt
    Updated Jun 15, 2023
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    Charles Fricke; Biplab Rajbanshi; Eric A. Walker; Gabriel Terejanu; Andreas Heyden (2023). Propane Dehydrogenation on Platinum Catalysts: Identifying the Active Sites through Bayesian Analysis [Dataset]. http://doi.org/10.1021/acscatal.1c04844.s001
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    txtAvailable download formats
    Dataset updated
    Jun 15, 2023
    Dataset provided by
    ACS Publications
    Authors
    Charles Fricke; Biplab Rajbanshi; Eric A. Walker; Gabriel Terejanu; Andreas Heyden
    License

    Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
    License information was derived automatically

    Description

    Uncertainty quantification, Bayesian statistics, the reported experimental literature, and density functional theory are synthesized to identify the active sites for the non-oxidative propane dehydrogenation on platinum catalysts. This study tests three different platinum surface models as active sites, Pt(100), Pt(111), and Pt(211), and two different methodologies for generating uncertainty, using data from four density functional theory functionals and data from the BEEF–vdW ensembles. By comparing these three surface facets using two uncertainty sources, a total of six different computational models were evaluated. Three experimental data sets, with varying numbers of reported observables, such as turnover frequencies, selectivity to propylene, apparent activation energy, and reaction orders, are calibrated and validated for these six models. This study finds no evidence for Pt(100) as the dominant active facet and finds that Pt(211) has some evidence for being the most relevant active site on the catalyst. In addition, all four functional models were excluded from final data analysis due to poor “goodness-of-fit”. In contrast, the BEEF–vdW model with ensembles (BMwEs) was found to pass “goodness-of-fit” for most of the models tested. Finally, for both Pt(111) and Pt(211), this study finds that the majority of simulations found the kinetically rate-controlling step the first dehydrogenation step from propane to C3H7*.

  11. t

    BIOGRID CURATED DATA FOR PUBLICATION: Fat facets and Liquid facets promote...

    • thebiogrid.org
    zip
    Updated Nov 1, 2004
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    BioGRID Project (2004). BIOGRID CURATED DATA FOR PUBLICATION: Fat facets and Liquid facets promote Delta endocytosis and Delta signaling in the signaling cells. [Dataset]. https://thebiogrid.org/106497/publication/fat-facets-and-liquid-facets-promote-delta-endocytosis-and-delta-signaling-in-the-signaling-cells.html
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    zipAvailable download formats
    Dataset updated
    Nov 1, 2004
    Dataset authored and provided by
    BioGRID Project
    License

    MIT Licensehttps://opensource.org/licenses/MIT
    License information was derived automatically

    Description

    Protein-Protein, Genetic, and Chemical Interactions for Overstreet E (2004):Fat facets and Liquid facets promote Delta endocytosis and Delta signaling in the signaling cells. curated by BioGRID (https://thebiogrid.org); ABSTRACT: Endocytosis modulates the Notch signaling pathway in both the signaling and receiving cells. One recent hypothesis is that endocytosis of the ligand Delta by the signaling cells is essential for Notch activation in the receiving cells. Here, we present evidence in strong support of this model. We show that in the developing Drosophila eye Fat facets (Faf), a deubiquitinating enzyme, and its substrate Liquid facets (Lqf), an endocytic epsin, promote Delta internalization and Delta signaling in the signaling cells. We demonstrate that while Lqf is necessary for three different Notch/Delta signaling events at the morphogenetic furrow, Faf is essential only for one: Delta signaling by photoreceptor precluster cells, which prevents recruitment of ectopic neurons. In addition, we show that the ubiquitin-ligase Neuralized (Neur), which ubiquitinates Delta, functions in the signaling cells with Faf and Lqf. The results presented bolster one model for Neur function in which Neur enhances Delta signaling by stimulating Delta internalization in the signaling cells. We propose that Faf plays a role similar to that of Neur in the Delta signaling cells. By deubiquitinating Lqf, which enhances the efficiency of Delta internalization, Faf stimulates Delta signaling.

  12. n

    Biodiversity facets, canopy structure and surface temperature of grassland...

    • data.niaid.nih.gov
    • search.dataone.org
    • +2more
    zip
    Updated Mar 2, 2021
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    Claudia Regina Guimaraes-Steinicke; Alexandra Weigelt; Raphaël Prouxl; Thomas Lanners; Nico Eisenhauer; Joaquín Duque-Lazo; Björn Reu; Christiane Roscher; Cameron Wagg; Nina Buchmann; Christian Wirth (2021). Biodiversity facets, canopy structure and surface temperature of grassland communities [Dataset]. http://doi.org/10.5061/dryad.866t1g1q1
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    zipAvailable download formats
    Dataset updated
    Mar 2, 2021
    Dataset provided by
    Helmholtz Centre for Environmental Research
    Université du Québec à Trois-Rivières
    ETH Zurich
    Leipzig University
    University of Zurich
    Teyolia Botanicals
    Industrial University of Santander
    Agresta SCoop
    Authors
    Claudia Regina Guimaraes-Steinicke; Alexandra Weigelt; Raphaël Prouxl; Thomas Lanners; Nico Eisenhauer; Joaquín Duque-Lazo; Björn Reu; Christiane Roscher; Cameron Wagg; Nina Buchmann; Christian Wirth
    License

    https://spdx.org/licenses/CC0-1.0.htmlhttps://spdx.org/licenses/CC0-1.0.html

    Description

    Canopy structure is an important driver of the energy budget of the grassland ecosystem and is, at the same time, altered by plant diversity. Diverse plant communities typically have taller and more densely packed canopies than less diverse communities. With this, they absorb more radiation, have a higher transpiring leaf surface, and are better coupled to the atmosphere which leads to cooler canopy surfaces. However, whether plant diversity generally translates into a cooling potential remains unclear and lacks empirical evidence. Here, we assessed how functional identity, functional diversity, and species richness of grassland communities in the Jena Experiment predict the mean and variation of plant surface temperature mediated via effects of canopy structure. Using terrestrial laser scanning, we estimated canopy structure describing metrics of vertical structure (mean height, LAI), the distribution (evenness), and the highest allocation (center of gravity) of biomass along height strata. As metrics of horizontal structure, we considered community stands gaps, canopy surface variation, and emergent flowers. We measured surface temperature with a thermal camera. We used SEM models to predict biodiversity effects on the surface temperature during two seasonal peaks of biomass. Before the first cut in May, herb-dominated communities directly promoted lower leaf surface temperatures. However, communities with a lower center of gravity (mostly herb-dominated) also increased canopy surface temperatures compared with grass-dominated communities with higher biomass stored in the top canopy. Grass-dominated communities showed a smaller variation of surface temperatures, which was also positively affected by species richness via an increase in mean height. In August, mean surface temperature decreased with increasing community clumpiness and LAI. The variation of surface temperature was greater in herb-dominated than in grass-dominated communities and increased with plant species richness (direct effects). Synthesis: The mean and variation of canopy surface temperature were driven by differences in functional group composition (herbs- vs. grass dominance) and to a lesser extent by plant diversity. These effects were partly mediated by the metrics of canopy structure but also by direct effects unrelated to the structural metrics considered.

    Methods Our field data was collected within the Trait-Based Biodiversity Experiment in 2014 (TBE; Ebeling et al., 2014) at the Jena Experiment site (Thuringia, Germany; 50°55´ N, 11°35`E, 130 m above sea level (Roscher et al., 2004; Weisser et al., 2017). We conducted this study in 92 plots of the Trait-Based experiment (3.5 m x 3.5 m size), comprehending the two species pools, with a gradient of plant species richness of 1 to 8 species. We performed a non-destructive measurement of plant community canopy structure at high resolution, we used a terrestrial laser scanner (TLS) Faro Focus 3D X330 (FARO Technologies Inc., 2011). We scanned 92 plots on April 31st (the first peak of biomass) and August 20th, 2014 (the second biomass peak). The TLS was mounted upside-down on a tripod that was elevated 3.35 m above ground level. The legs of the tripod were centered on permanent survey markers to guarantee identical scanning areas on both dates. We extracted an area of 3.75 m² (1.5 m x 2.5 m) in each plot below the scanner to reduce the effect of shadows within scans. The point clouds of the 92 plots were filtered using statistical outlier removal (SOR) and noise filter. We used the 3D point clouds from terrestrial laser scanning to calculate metrics characterizing vertical and horizontal dimensions of the community canopy structure. We produced height-based metrics from the point cloud of each community. We used mean height as the first vertical dimension metric. To characterize vertical space-filling properties, we calculated the evenness and the center of gravity of the point cloud. Evenness reports the homogeneity of the point cloud density in their vertical distribution, while the center of gravity identifies the height stratum (definition see below) with the highest density of points (Spehn et al., 2000; Barry et al., 2020). As a baseline for only these two vertical metrics (evenness and center of gravity), we calculated voxel grids from the 3D point cloud for each plot. For each scan, a voxel grid of 5 cm was created containing at least one laser return, and the volume was then calculated as the product of the cell area and the attributed height. We used the function ‘vox’ from the R package VoxR (Lecigne et al., 2014). We used the voxel grids to define five different strata of height (0.3 - 20 cm, 20 - 40 cm, 40 - 60 cm, 60 – 80 cm, and 80 - 100 cm). For every stratum, we applied the method ‘Sum of Voxel,’ which calculated the sum of all voxels separately for each of the five strata. As a result, we obtained volumetric data based on 3D point clouds for five different strata and the community canopy height. Based on this information, the evenness metric represents the mean proportion of filled voxels across strata of vegetation height, calculated as the sum of all five voxel strata volumes divided by 5. The center of gravity, in turn, used the volume of voxel grids per height strata to identify the location with the highest density of points. This location was measured in terms of the height-weighted average volume allocation of the community. We then calculated the center of gravity by multiplying each stratum's volume with the mean height of the strata and dividing by the total community volume. Center of gravity range from 1 to 5, in which 1 is the bottom layer (0-20 cm) and five the top canopy (80-100 cm). Further, the leaf area index was also measured at the same time in all 92 plots using the LAI-2000 plant canopy analyzer (LI-Cor, Inc, 2013). Ten random measurements were averaged to a mean of LAI value per plot. Hence, we used LAI as an additional vertical dimensional metric to characterize plant ground area covered by the plant community. To assess the horizontal heterogeneity of the plant community for each plot, we also calculated two horizontal metrics describing the canopy surface variation and clumpiness. We used the surface reconstruction method, which fits a mesh on the 3D point cloud density of each plot (the filtered point clouds and not voxel grids) (Attene & Spagnuolo, 2000). We applied the Poisson Surface Reconstruction method, which fits a mesh on all oriented points (perpendicular vectors to the tangential plane to the surface at that point) (Kazhdan & Hoppe, 2019). After producing the surface mesh for all plots, a surface area of the mesh in square meters was calculated and divided by the area of the plot (3.75 m²). The variation metric is a dimensionless ratio between the mesh surface area and the ground area. For clumpiness, we evaluated the size and distribution of clusters in the spatial arrangement of the point cloud into two dimensions based on the rasterized 3D point clouds. For this, we computed Geary´s index, an identifier of cluster points with similar attributes, assessed by the pixel spatial autocorrelation. We used the function Geary from the R package “raster”. The two response variables, the mean and the coefficient of variation (hereafter CV) of community surface temperature were obtained using the Testo 882 Thermal Imaging Camera, which also recorded RGB images of all 92 plots (for example, Figure 3). We obtained the thermal data and terrestrial laser scans within two days. All thermal measurements were carried out around noon (12:30 – 13:30), at 150 cm height, and facing north. The thermal camera settings controlled the canopy's emissivity as 0.95 with reflectance temperature at 20°C. The sensor detects long-wave infrared radiation in the spectral range from 7.5 to 14 μm and has a thermal sensitivity of 50 mK at +30°C and accuracy of ±2.0°C. With the thermal matrix (registered pixel temperature with an original resolution of 640 x 480), we computed the mean and the coefficient of variation of surface temperature for each plot. As flower heads are often 10 K warmer than the surrounding leaves of herbs and grasses, we calculated the Normalized Green-Red Difference Index (NGRDI, the difference between the green and red bands divided by their sum (Pérez et al., 2000). Further, we also calculated the Normalized Green-Blue Difference Index (NGBDI, the difference between the green and the blue bands divided by their sum (Wang Xiaoqin et al., 2015) better to distinguish the hot spots of inflorescences and green vegetation. We expected that biodiversity effects on mean canopy surface temperature are indirectly mediated by predictors related to vertical structure metrics, while biodiversity effects on temperature CV are mediated by the horizontal structure. To test these assumptions further, we constructed a more detailed formal hypothesis using linear mixed-effects models within a PiecewiseSEM (Lefcheck, 2016). we ran the initial SEM model as a list of causal relationships between canopy structure and biodiversity facets. The last linear model inside the SEM was between the mean and CV of surface temperature and biodiversity facets (functional identity, dispersion, and species richness) and all canopy structure metrics to test the fit of the model to the data. Second, we inspected this initial SEM model results for goodness-of-fit tests for both the full and causal relationships, we then added the predictors that significantly improved the model fit with P values higher than 0.05.

  13. n

    Shrubland vegetation topographic facets of Southern California

    • data.niaid.nih.gov
    • datadryad.org
    zip
    Updated Jun 23, 2021
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    Allan Hollander; Emma Underwood (2021). Shrubland vegetation topographic facets of Southern California [Dataset]. http://doi.org/10.25338/B8JW59
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    zipAvailable download formats
    Dataset updated
    Jun 23, 2021
    Dataset provided by
    University of California, Davis
    Authors
    Allan Hollander; Emma Underwood
    License

    https://spdx.org/licenses/CC0-1.0.htmlhttps://spdx.org/licenses/CC0-1.0.html

    Area covered
    California, Southern California
    Description

    To approximate the distribution of shrubland species based on their postfire reproductive strategy (resprouter, seeder, and facultative seeder) across Southern California, we created a raster layer subdividing the landscape into a number of different facet classes. This raster dataset is at 30 meters pixel resolution and contains 12 different landscape facet classes based on vegetation and physiography. Specifically, the facets included several different vegetation types based on the California Wildlife Habitat Relations (WHR) classification (three shrubland categories, annual grasslands, valley-foothill riparian woodland, and ‘other’ vegetation types) which were intersected with aspect (two classes: north or south facing) and topography (summit, ridges, slopes, valleys, flats, and depressions). The combination of factors is intended to capture warmer, more exposed vegetation types dominated by seeder species (occurring on south-facing slopes, summits and ridges) versus cooler, less exposed vegetation types associated with resprouter species (occurring on north-facing slopes, valleys, depressions, and flats).

    The dataset is a key input into a tool developed for resource managers to aid in the prioritization of restoration activities in shrublands postfire. The tool is available at https://github.com/adhollander/postfire and described in the following technical guide:

    Underwood, Emma C., and Allan D. Hollander. 2019. “Post-Fire Restoration Prioritization for Chaparral Shrublands Technical Guide.” https://github.com/adhollander/postfire/blob/master/Postfire_Restoration_Priorization_Tool_Technical_Guide.pdf

    Methods The following are the GIS processing workflow steps used to create this dataset. A diagram illustrating this workflow is in the attached file collection (SoCal_Veg_Topo_Facets_Workflow.png).

    1) Compile GIS layers. There were two input layers to the GIS workflow, a 30 meter digital elevation model for California (dem30) and a vegetation raster layer of the state from the California Department of Forestry and Fire Protection (fveg15). The 30 meter DEM was downloaded from the USGS National Map (https://www.usgs.gov/core-science-systems/national-geospatial-program/national-map). The vegetation data is the FVEG dataset published in 2015 by the California Department of Forestry and Fire Protection's Fire and Resource Assessment Program (https://frap.fire.ca.gov/media/10894/fveg15_1.zip). This is a 30 meter raster representation of statewide vegetation using the California Wildlife Habitat Relationships vegetation classification system (https://wildlife.ca.gov/Data/CWHR).

    2) Import data into GIS. Both data layers were imported into GRASS 7 for further processing, using a mask of the Southern California study region (encompassing the Angeles, Cleveland, Los Padres, and San Bernardino National Forests) to filter processing to the study footprint.

    3) Calculate aspect for elevation model. Using the command r.slope.aspect, we generated a raster layer (aspect) giving the topographic aspect (0-360 degrees) of slopes across the study region.

    4) Generate north-south aspect layer. Using the command r.mapcalc, we subdivided the aspect layer into north and south-facing slopes through creating a raster layer (nsaspect) with two categories for north and south.

    5) Generate geomorphons for study region. The geomorphon raster layer derives from the dem30m surface and classifies the landscape into 10 discrete landform types, examples being ridges, slopes, hollows, and valleys. The algorithm for geomorphon classification uses a pattern recognition approach based on line of sight analysis (Jasiewisc and Stepinski 2013) and was generated using the r.geomorphons extension for GRASS 7.

    6) Merge geomorphons with north-south aspect layer. In this step we combined the north-south aspect layer with the geomorphons layer to create a layer entitled nsgeomorphon2a. In so doing we grouped the geomorphon types spurs, slopes, and hollows into a single “slope” category and assigned these to north-facing slopes and south-facing slopes depending upon the value of the north-south aspect layer.

    7) Regroup merged layer into three groupings. In this step we took the merged nsgeomorphon2a layer and assigned the classes in it to three different physiographic groups, namely 1) flats 2) valleys, depressions, and north-facing slopes/spurs/hollows/footslopes/shoulders and 3) summits and ridges and south-facing slopes/spurs/hollows/footslopes/shoulders. This grouped layer was named nsgeomorphon2d.

    8) Reclass vegetation layer to main habitat types. The vegetation layer fveg15 contains information about many details of the vegetation, including canopy size, canopy cover, and main habitat type. This reclass step extracts the main habitat type into a separate raster named fveg15whr.

    9) Combine vegetation layer with physiography layer. Using the command r.cross, we combined the layers fveg15whr and nsgeomorphon2d into a new layer nsgeoxfvegwhr with a separate category for each combination of the raster values from the two input layers.

    10) Reclass combined layer into small set of groupings. Taking the nsgeoxfvegwhr layer, we recategorized the 196 combinations of raster values into a set of 12 different combinations using the command r.reclass. This layer is named nsgeoxfvegnbclasses. The 12 different classes generated as an output are the following, with their raster values paired with their classes:

    0 Annual grassland: south-facing slopes; summits; ridges

    1 Annual grassland: north-facing slopes; valleys; depressions; flats

    2 Chamise-redshanks chaparral: south-facing slopes; summits; ridges

    3 Chamise-redshanks chaparral: north-facing slopes; valleys; depressions; flats

    4 Mixed or montane chaparral: south-facing slopes; summits; ridges

    5 Mixed or montane chaparral: north-facing slopes; valleys; depressions; flats

    6 Valley-foothill riparian: south-facing slopes; summits; ridges

    7 Valley-foothill riparian: north-facing slopes; valleys; depressions; flats

    8 Coastal scrub: south-facing slopes; summits; ridges

    9 Coastal scrub: north-facing slopes; valleys; depressions; flats

    10 Other: south-facing slopes; summits; ridges

    11 Other: north-facing slopes; valleys; depressions; flats

    11) Export dataset. Using the command r.out.gdal, we exported the nsgeoxfvegnbclasses layer as the raster geotiff file SoCal_Veg_Topo_Facets.tif.

    The GRASS commands used for these 11 steps are below:

    r.in.gdal input="/home/adh/CARangelands/Vegetation/fveg15_11.tif" output="fveg15" memory=300 offset=0

    r.proj input="dem1sec_calif" location="CAllnad83" mapset="statewide" output="dem30m" method="bilinear" memory=300 resolution=30

    r.slope.aspect elevation=dem30m@statewide slope=slope aspect=aspect

    r.mapcalc 'nsaspect = if(aspect <= 180, 1, 2)'

    r.geomorphon --overwrite dem=dem30m@statewide forms=SoCalgeomorphons search=11 skip=4 flat=1 dist=0

    r.mapcalc --overwrite 'nsgeomorphon = if((SoCalgeomorphons@socalNF == 5 ||| SoCalgeomorphons@socalNF == 6 ||| SoCalgeomorphons@socalNF == 7) &&& nsaspect == 1, 11, if(((SoCalgeomorphons@socalNF == 5 ||| SoCalgeomorphons@socalNF == 6 ||| SoCalgeomorphons@socalNF == 7) &&& nsaspect == 2), 12, SoCalgeomorphons@socalNF))'

    r.reclass input=nsgeomorphon2a@socalNF output=nsgeomorphon2d rules=/home/adh/SantaClaraRiver/PostfireRestoration/jupyter/datasets/nsgeomorphon-reclass2d.lut

    r.reclass input="fveg15@statewide" output="fveg15whr" rules="/home/adh/CARangelands/Vegetation/fveg15whr.lut"

    r.cross --overwrite input=fveg15whr@statewide,nsgeomorphon2d@socalNF output=nsgeoxfvegwhr

    r.reclass --overwrite input=nsgeoxfvegwhr@socalNF output=nsgeoxfvegnbclasses rules=/home/adh/SantaClaraRiver/PostfireRestoration/datasets/fvegwhrtonbclasses.lut

    r.out.gdal --overwrite input=nsgeoxfvegnbclasses@socalNF output=SoCal_Veg_Topo_Facets.tif format=GTiff type=Byte createopt=COMPRESS=DEFLATE

  14. Data from: Different facets of the same niche: integrating citizen science...

    • zenodo.org
    • doi.org
    • +1more
    bin
    Updated Aug 7, 2023
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    Mirko Di Febbraro; Luciano Bosso; Mauro Fasola; Francesca Santicchia; Gaetano Aloise; Simone Lioy; Elena Tricarico; Luciano Ruggieri; Stefano Bovero; Emiliano Mori; Sandro Bertolino; Mirko Di Febbraro; Luciano Bosso; Mauro Fasola; Francesca Santicchia; Gaetano Aloise; Simone Lioy; Elena Tricarico; Luciano Ruggieri; Stefano Bovero; Emiliano Mori; Sandro Bertolino (2023). Different facets of the same niche: integrating citizen science and scientific survey data to predict biological invasion risk under multiple global change drivers [Dataset]. http://doi.org/10.5281/zenodo.8185610
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    binAvailable download formats
    Dataset updated
    Aug 7, 2023
    Dataset provided by
    Zenodohttp://zenodo.org/
    Authors
    Mirko Di Febbraro; Luciano Bosso; Mauro Fasola; Francesca Santicchia; Gaetano Aloise; Simone Lioy; Elena Tricarico; Luciano Ruggieri; Stefano Bovero; Emiliano Mori; Sandro Bertolino; Mirko Di Febbraro; Luciano Bosso; Mauro Fasola; Francesca Santicchia; Gaetano Aloise; Simone Lioy; Elena Tricarico; Luciano Ruggieri; Stefano Bovero; Emiliano Mori; Sandro Bertolino
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Raw data (occurrences and environmental predictors) used in the manuscript "Different facets of the same niche: integrating citizen science and scientific survey data to predict biological invasion risk under multiple global change drivers"

  15. d

    Building Component Library

    • catalog.data.gov
    Updated May 20, 2025
    + more versions
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    National Renewable Energy Laboratory (2025). Building Component Library [Dataset]. https://catalog.data.gov/dataset/building-component-library-cd8a7
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    Dataset updated
    May 20, 2025
    Dataset provided by
    National Renewable Energy Laboratory
    Description

    The Building Component Library (BCL) is the U.S. Department of Energy's comprehensive online searchable library of energy modeling building blocks and descriptive metadata. Novice users and seasoned practitioners can use the freely available and uniquely identifiable components to create energy models and cite the sources of input data, which will increase the credibility and reproducibility of their simulations. The BCL contains components which are the building blocks of an energy model. They can represent physical characteristics of the building such as roofs, walls, and windows, or can refer to related operational information such as occupancy and equipment schedules and weather information. Each component is identified through a set of attributes that are specific to its type, as well as other metadata such as provenance information and associated files. The BCL also contains energy conservation measures (ECM), referred to as measures, which describe a change to a building and its associated model. For the BCL, this description attempts to define a measure for reproducible application, either to compare it to a baseline model, to estimate potential energy savings, or to examine the effects of a particular implementation. The BCL contains more than 30,000 components and measures. A faceted search mechanism has been implemented on the BCL that allows users to filter through the search results using various facets. Facet categories include component and measure types, data source, and energy modeling software type. All attributes of a component or measure can also be used to filter the results.

  16. f

    Data from: Can Coarse-Grained Molecular Dynamics Simulations Predict...

    • acs.figshare.com
    txt
    Updated Mar 17, 2025
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    Linghao Shi; Futianyi Wang; Taraknath Mandal; Ronald G. Larson (2025). Can Coarse-Grained Molecular Dynamics Simulations Predict Pharmaceutical Crystal Growth? [Dataset]. http://doi.org/10.1021/acs.jctc.5c00040.s002
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    txtAvailable download formats
    Dataset updated
    Mar 17, 2025
    Dataset provided by
    ACS Publications
    Authors
    Linghao Shi; Futianyi Wang; Taraknath Mandal; Ronald G. Larson
    License

    Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
    License information was derived automatically

    Description

    To investigate the ability of coarse-grained molecular dynamics simulations to predict the relative growth rates of crystal facets of pharmaceutical molecules, we apply two coarse-graining strategies to two drug molecules, phenytoin and carbamazepine. In the first method, we map an atomistic model to a MARTINI-level coarse-grained (CG) force field that uses 2 or 3 heavy atoms per bead. This is followed by applying Particle Swarm Optimization (PSO), a global optimum searching algorithm, to the CG Lennard-Jones intermolecular potentials to fit the radial distribution functions of both the crystalline and melt structures. In the second, a coarser-grained method, we map 5 or more heavy atoms into one bead with the help of the Iterative Boltzmann Inversion (IBI) method to derive a tabulated longer-range force field (FF). Simulations using the FF’s derived from both strategies were able to stabilize the crystal in the correct structure and to predict crystal growth from the melt with modest computational resources. We evaluate the advantages and limitations of both methods and compare the relative growth rates of various facets of both drug crystals with those predicted by the Bravais–Friedel–Donnay–Harker (BFDH) and attachment energy (AE) theories. While all methods, except for the simulations conducted with the coarser-grained IBI-generated model, produced similarly good results for phenytoin, the finer-grained PSO-generated FF using MARTINI mapping rules outperformed the other methods in its prediction of the facet growth rates and resulting crystalline morphology for carbamazepine.

  17. World Ecological Facets Landform Classes

    • digital-earth-pacificcore.hub.arcgis.com
    • cacgeoportal.com
    • +2more
    Updated Jul 15, 2015
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    Esri (2015). World Ecological Facets Landform Classes [Dataset]. https://digital-earth-pacificcore.hub.arcgis.com/datasets/cd817a746aa7437cbd72a6d39cdb4559
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    Dataset updated
    Jul 15, 2015
    Dataset authored and provided by
    Esrihttp://esri.com/
    Area covered
    World,
    Description

    Landforms are large recognizable features such as mountains, hills and plains; they are an important determinant of ecological character, habitat definition and terrain analysis. Landforms are important to the distribution of life in natural systems and are the basis for opportunities in built systems, and therefore landforms play a useful role in all natural science fields of study and planning disciplines.Dataset SummaryPhenomenon Mapped: LandformsUnits: MetersCell Size: 231.91560581932 metersSource Type: ThematicPixel Type: 8-bit unsigned integerData Coordinate System: WGS 1984Mosaic Projection: Web Mercator Auxiliary SphereExtent: GlobalSource: EsriPublication Date: May 2016ArcGIS Server URL: https://landscape7.arcgis.com/arcgis/In February 2017, Esri updated the World Landforms - Improved Hammond Method service with two display functions: Ecological Land Units landform classes and Ecological Facets landform classes. This layer represents Ecological Facets landform classes. You can view the Ecological Land Units landform classes by choosing Image Display, and changing the Renderer. This layer was produced using the Improved Hammond Landform Classification Algorithm produced by Esri in 2016. This algorithm published and described by Karagulle et al. 2017: Modeling global Hammond landform regions from 250-m elevation data in Transactions in GIS.The algorithm, which is based on the most recent work in this area by Morgan, J. & Lesh, A. 2005: Developing Landform Maps Using Esri’s Model Builder., Esri converted Morgan’s model into a Python script and revised it to work on global 250-meter resolution GMTED2010 elevation data. Hammond’s landform classification characterizes regions rather than identifying individual features, thus, this layer contains sixteen classes of landforms:Nearly flat plainsSmooth plains with some local reliefIrregular plains with moderate relief Irregular plains with low hillsScattered moderate hillsScattered high hillsScattered low mountainsScattered high mountainsModerate hillsHigh hills Tablelands with moderate reliefTablelands with considerable reliefTablelands with high relief Tablelands with very high relief Low mountainsHigh mountainsTo produce these classes, Esri staff first projected the 250-meter resolution GMTED elevation data to the World Equidistant Cylindrical coordinate system. Each cell in this dataset was assigned three characteristics: slope based on 3-km neighborhood, relief based on 6 km neighborhood, and profile based on 6-km neighborhood. The last step was to overlay the combination of these three characteristics with areas that are exclusively plains. Slope is the percentage of the 3-km neighborhood occupied by gentle slope. Hammond specified 8% as the threshold for gentle slope. Slope is used to define how flat or steep the terrain is. Slope was classified into one of four classes:

    Percent of neighborhood over 8% of slope

    Slope Classes

    0 - 20%

    400

    21% -50%

    300

    51% - 80%

    200

    81%

    100

    Local Relief is the difference between the maximum and minimum elevation within in the 6-km neighborhood. Local relief is used to define terrain how rugged or the complexity of the terrain's texture. Relief was assigned one of six classes:

    Change in elevation

    Relief Class ID

    0 – 30 meters

    10

    31 meter – 90 meters

    20

    91 meter – 150 meters

    30

    151 meter – 300 meters

    40

    301 meter – 900 meters

    50

    900 meters

    60

    The combination of slope and relief begin to define terrain as mountains, hills and plains. However, the difference between mountains or hills and tablelands cannot be distinguished using only these parameters. Profile is used to determine tableland areas. Profile identifies neighborhoods with upland and lowland areas, and calculates the percent area of gently sloping terrain within those upland and lowland areas. A 6-km circular neighborhood was used to calculate the profile parameter. Upland/lowland is determined by the difference between average local relief and elevation. In the 6-km neighborhood window, if the difference between maximum elevation and cell’s elevation is smaller than half of the local relief it’s an upland. If the difference between maximum elevation and cell’s elevation is larger than half of the local relief it’s a lowland. Profile was assigned one of five classes:

    Percent of neighborhood over 8% slope in upland or lowland areas

    Profile Class

    Less than 50% gentle slope is in upland or lowland

    0

    More than 75% of gentle slope is in lowland

    1

    50%-75% of gentle slope is in lowland

    2

    50-75% of gentle slope is in upland

    3

    More than 75% of gentle slope is in upland

    4

    Early reviewers of the resulting classes noted one confusing outcome, which was that areas were classified as "plains with low mountains", or "plains with hills" were often mostly plains, and the hills or mountains were part of an adjacent set of exclusively identified hills or mountains. To address this areas that are exclusively plains were produced, and used to override these confusing areas. The hills and mountains within those areas were converted to their respective landform class.The combination of slope, relief and profile merged with the areas of plains, can be better understood using the following diagram, which uses the colors in this layer to show which classes are present and what parameter values produced them:What can you do with this layer?This layer is suitable for both visualization and analysis. It can be used in ArcGIS Online in web maps and applications and can be used in ArcGIS Desktop. This layer is part of a larger collection of landscape layers that you can use to perform a wide variety of mapping and analysis tasks.The Living Atlas of the World provides an easy way to explore the landscape layers and many other beautiful and authoritative maps on hundreds of topics.Geonet is a good resource for learning more about landscape layers and the Living Atlas of the World. To get started see the Living Atlas Discussion Group.The Esri Insider Blog provides an introduction to the Ecophysiographic Mapping project.

  18. f

    Data from: Adsorbate Free Energies from DFT-Derived Translational Energy...

    • acs.figshare.com
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    Updated Jun 10, 2023
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    Craig Waitt; Audrey R. Miles; William F. Schneider (2023). Adsorbate Free Energies from DFT-Derived Translational Energy Landscapes [Dataset]. http://doi.org/10.1021/acs.jpcc.1c05917.s002
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    zipAvailable download formats
    Dataset updated
    Jun 10, 2023
    Dataset provided by
    ACS Publications
    Authors
    Craig Waitt; Audrey R. Miles; William F. Schneider
    License

    Attribution-NonCommercial 4.0 (CC BY-NC 4.0)https://creativecommons.org/licenses/by-nc/4.0/
    License information was derived automatically

    Description

    Adsorption free energies are fundamental to surface chemistry and catalysis. Standard models combine some assumed analytical form of the translational potential energy surface, often parametrized against density functional theory (DFT) calculations, with an analytical expression for the resultant translational densities of states (DOS), free energy, and entropy. Here we compare the performance of such models against numerical evaluations of the DOS and thermodynamic functions derived from solutions to the translational Schrödinger equation. We compare results for a translational potential energy surface (PES) derived from nudged eleastic band calculations with those obtained from adsorbate rastering across a series of monatomic (O, S, C, N, and H) and polyatomic (NHx) adsorbates on (100) Pt and Au facets. We find that analytical models as commonly parametrized have mixed performance for describing the translational PES and that the consequences for computed free energies are modest but potentially significant in microkinetic models. Numerical solutions are possible for modest to no additional computational cost over analytical models and thus should be considered when reliable free energy estimates are needed or translational potential energy surfaces are available.

  19. g

    Building Component Library

    • gimi9.com
    Updated May 20, 2025
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    (2025). Building Component Library [Dataset]. https://gimi9.com/dataset/data-gov_building-component-library-cd8a7
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    Dataset updated
    May 20, 2025
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    🇺🇸 미국 English The Building Component Library (BCL) is the U.S. Department of Energy's comprehensive online searchable library of energy modeling building blocks and descriptive metadata. Novice users and seasoned practitioners can use the freely available and uniquely identifiable components to create energy models and cite the sources of input data, which will increase the credibility and reproducibility of their simulations. The BCL contains components which are the building blocks of an energy model. They can represent physical characteristics of the building such as roofs, walls, and windows, or can refer to related operational information such as occupancy and equipment schedules and weather information. Each component is identified through a set of attributes that are specific to its type, as well as other metadata such as provenance information and associated files. The BCL also contains energy conservation measures (ECM), referred to as measures, which describe a change to a building and its associated model. For the BCL, this description attempts to define a measure for reproducible application, either to compare it to a baseline model, to estimate potential energy savings, or to examine the effects of a particular implementation. The BCL contains more than 30,000 components and measures. A faceted search mechanism has been implemented on the BCL that allows users to filter through the search results using various facets. Facet categories include component and measure types, data source, and energy modeling software type. All attributes of a component or measure can also be used to filter the results.

  20. f

    Dominance matrix for Model 1 predicting the interpersonal facet arranged by...

    • plos.figshare.com
    xls
    Updated Jun 21, 2023
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    Samuel J. West; Elena Psederska; Kiril Bozgunov; Dimitar Nedelchev; Georgi Vasilev; Nicholas D. Thomson; Jasmin Vassileva (2023). Dominance matrix for Model 1 predicting the interpersonal facet arranged by order of complete dominance. [Dataset]. http://doi.org/10.1371/journal.pone.0283866.t006
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    xlsAvailable download formats
    Dataset updated
    Jun 21, 2023
    Dataset provided by
    PLOS ONE
    Authors
    Samuel J. West; Elena Psederska; Kiril Bozgunov; Dimitar Nedelchev; Georgi Vasilev; Nicholas D. Thomson; Jasmin Vassileva
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Dominance matrix for Model 1 predicting the interpersonal facet arranged by order of complete dominance.

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Jerome Carnis (2021). Facet-dependent strain determination in electrochemically synthetized platinum model catalytic nanoparticles [Dataset]. http://doi.org/10.11577/1771456

Data from: Facet-dependent strain determination in electrochemically synthetized platinum model catalytic nanoparticles

Related Article
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Dataset updated
Mar 19, 2021
Authors
Jerome Carnis
License

CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
License information was derived automatically

Description

Please check the README file for more information about the dataset.

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