• Organization: U.S. Environmental Protection Agency
• Updated: 2017-06-14

This dataset concerns the development of models for describing the acute toxicity of major ions to Ceriodaphnia dubia using data from single salt tests and binary mixture tests described in two...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-03-31

CLAIRE MONTELEONI*, GAVIN SCHMIDT**, AND SHAILESH SAROHA*** Climate models are complex mathematical models designed by meteorologists, geophysicists, and climate scientists to simulate and...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-03-31

ADAPTIVE MODEL REFINEMENT FOR THE IONOSPHERE AND THERMOSPHERE ANTHONY M. D’AMATO∗, AARON J. RIDLEY∗∗, AND DENNIS S. BERNSTEIN∗∗∗ Abstract. Mathematical models of physical phenomena are of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2019-01-01T00:00:00.000+00:00

In Gauss' words, the geoid is "the mathematical figure of the Earth". This figure is an equipotential surface coincident with the idealized mean sea surface. The geoid can be computed from the...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1972-01-01T00:00:00.000+00:00

Information on the past and present orientation of the Earth's magnetic field is available from the National Geophysical Data Center (NGDC) which serves as the national data bank for geomagnetic...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

Historical values for the Extended Spring Index (SI-x) of First Leaf. Each pixel is assigned a day of year value for the First Leaf Index. The Extended Spring Indices are mathematical models that...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2017-12-26

Our data can be used by modeler to develop mathematical models to simulate and predict the fate and transport of the next-generation multifunctional carbon-based metal oxide nanohybrids in the...

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• Organization: Department of the Interior
• Updated: 2021-09-02T00:00:00Z

Site-specific multiple linear regression models were developed for one beach in Ohio (three discrete sampling sites) and one beach in Pennsylvania to estimate concentrations of Escherichia coli...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-04-01

In previous papers, we introduced the idea of a Virtual Sensor, which is a mathematical model trained to learn the potentially nonlinear relationships between spectra for a given image scene for...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2020-05-26

The systems map described in this manuscript for neurulation will set the stage for constructing mathematical models and computer simulation of neural tube closure for human-relevant AOPs and...

• Organization: U.S. Environmental Protection Agency
• Updated: 2019-11-18

Screening certain environmental chemicals for their ability to interact with endocrine targets, including the androgen receptor (AR), is an important global concern. We previously developed a...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-03-31

Prognostics methodologies determine the health state of a system and predict the end of life and remaining useful life. This information enables operators to take maintenance related decisions,...

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• Organization: National Aeronautics and Space Administration
• Updated: 2025-03-31

Prognostics technologies determine the health (or damage) state of a component or sub- system, and make end of life (EOL) and remaining useful life (RUL) predictions. Such infor- mation enables...

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• Organization: Department of Agriculture
• Updated: 2023-11-30

Successful predictions of the fate and transport of solutes in the subsurface hinges on the availability of accurate transport parameters. We modified and updated the CXTFIT (version 1.0) code of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2016-08-29T00:00:00.000+00:00

This dataset contains analyses and data products used in a marine biogeographic assessment of the main Hawaiian Islands. The Bureau of Ocean Energy Management (BOEM) regulates the leasing,...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

ComBase includes a systematically formatted database of quantified microbial responses to the food environment with more than 65,000 records, and is used for: Informing the design of food safety...

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• Organization: Department of the Interior
• Updated: 2020-08-27T00:00:00Z

In cooperation with the South Carolina Department of Transportation, the U.S. Geological Survey developed a StreamStats web application (https://water.usgs.gov/osw/streamstats/) that provides...

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• Organization: Department of Agriculture
• Updated: 2025-11-21

Mathematical models have become increasingly popular in both research and management problems involving flow and transport processes in the subsurface. The unsaturated hydraulic functions are key...

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• Organization: Department of the Interior
• Updated: 2024-06-26T00:00:00Z

Forecasts of flows entering and leaving the Chain of Lakes on the Fox River in northeastern Illinois are critical information to water-resource managers operating the Stratton Dam at McHenry,...

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• Organization: Department of the Interior
• Updated: 2024-07-12T00:00:00Z

This dataset provides topographic indices derived from 1 m resolution DEMs for sequoia groves in both Sequoia-Kings Canyon and Yosemite National Parks. All mapped sequoia groves in Sequoia-Kings...

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