• Organization: National Institute of Standards and Technology
• Updated: 2019-12-12 00:00:00

Summary of simulation results that are used to generate figures in a paper titled "Performance Evaluation of Proximity Services and Wi-Fi for PublicSafety Mission Critical Voice Application". ...

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• Organization: National Institute of Standards and Technology
• Updated: 2024-05-31 00:00:00

An extension to ns-3 and the current 5G NR V2X code to support 5G Proximity Services (ProSe) including Discovery and Layer-3 UE-to-Network Relay.

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• Organization: National Institute of Standards and Technology
• Updated: 2018-11-30

Summary of analytical estimates and simulation results that are used to generate figures in a paper titled "Access Time Analysis of MCPTT Off-Network Mode over LTE". The paper was submitted to...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-06-09T00:00:00.000+00:00

This EnviroAtlas web service includes maps that illustrate factors affecting transit accessibility, and indicators of accessibility. Accessibility measures how easily people can reach destinations...

• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-17

The 2022 Environmental Performance Index (EPI) ranks 180 countries on 40 performance indicators in the following 11 issue categories: air quality, sanitation and drinking water, heavy metals,...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-06-09T00:00:00.000+00:00

This EnviroAtlas web service includes maps that illustrate the number and density of housing units. Housing density and the proximity of housing to employment can affect commuting patterns....

• Organization: National Aeronautics and Space Administration
• Updated: 2025-07-17

The 2020 Environmental Performance Index (EPI) ranks 180 countries on 32 performance indicators in the following 11 issue categories: air quality, sanitation and drinking water, heavy metals,...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-06-09T00:00:00.000+00:00

This EnviroAtlas web service includes maps that illustrate job activity in each census block group. Employment diversity, employment density, and proximity of employment to housing can affect...

• Organization: U.S. Environmental Protection Agency
• Updated: 2017-03-24T00:00:00.000+00:00

This EnviroAtlas dataset shows the number and density of candidate areas for ecological restoration in each 12-digit HUC. Ecological restoration may become a more prominent means of environmental...

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2015-02-03T00:00:00.000+00:00

This dataset provides counts of harbor seals from aerial surveys over Iliamna Lake, Alaska, USA. The data have been collated from three previously published sources (Mathisen and Kline 1992; Small...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-02-21

This EnviroAtlas dataset measures accessibility (i.e., proximity or nearness) of public outdoor recreational areas within an 800 meter walk (approximately 1/2 mile or 10-minute walk) along...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2022-05-04T00:00:00.000+00:00

This EnviroAtlas dataset describes several metrics related to road-stream crossings and roads near streams at the watershed scale. According to EPA report 600/R-97/130, roads can affect stream...

• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2015-06-18T00:00:00.000+00:00

This dataset provides counts of harbor seals from aerial surveys over Lake Iliamna, Alaska, USA. The data have been collated from three previously published sources (Mathisen and Kline 1992; Small...

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• Organization: Department of the Interior
• Updated: 2024-07-31T00:00:00Z

St. Croix is home to a variety of threatened and endangered (T&E) species that are at risk for predation by the invasive red-tailed boa (Boa constrictor). Genetic analysis determined the original...

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• Organization: Department of the Interior
• Updated: 2022-09-01T00:00:00Z

Through the North American Bat Monitoring Program, United States Geological Survey (USGS) provided technical and science support to assist in U.S. Fish and Wildlife Services’ Species Status...

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• Organization: National Institute of Standards and Technology
• Updated: 2019-06-28 00:00:00

Data collected includes audio device characterization (latency/delay). End to end access time of Land Mobile Radios (LMR) including direct mode operation and trunked mode operation.

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• Organization: National Institute of Standards and Technology
• Updated: 2019-07-02 00:00:00

This codeset was developed for the QoE MCV end to end access time measurement methodology.

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