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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Menstruation and homelessness: Challenges faced living in shelters and on the street in New York City
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Techno-economic analysis of residential building heating strategies for cost-effective upgrades in European cities
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Comparative study of city-level sustainability assessment standards in China and the United States
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Unsupervised learning for deploying smart charging public infrastructure for electric vehicles in sprawling cities
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Goal-driven scheduling model in edge computing for smart city applications
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Urbanization and climate change jointly shift land surface phenology in the northern mid-latitude large cities
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Loadings, chemical patterns and risks of inhalable road dust particles in an Atlantic city in the north of Portugal
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Unexpected air quality impacts from implementation of green infrastructure in urban environments: A Kansas City case study
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Spatial adoption forecast methodology for photovoltaic systems throughout a city
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Cybersecurity vulnerability and resilience of cooperative driving automation for energy efficiency and flow stability in smart cities
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Correlates of physical activity in fifth-grade students in Ho Chi Minh City, Vietnam
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Riders’ perceptions towards transit bus electrification: Evidence from Salt Lake City, Utah
While battery electric buses (BEBs) can lead to energy savings and reduced emissions, BEB adoption is developing slowly. Although BEBs offer quieter operations, better acceleration, and no smell of diesel or gas fumes, little focus has been placed on the user’s perspective. Here, this study investigates bus riders’ preferences toward BEBs. To achieve these objectives, a survey was designed and administered to solicit riders’ typical travel behaviors and patterns as well as preferences and opinions about BEBs’ performance in terms of emissions and noise. Statistical analysis showed that several factors influence rider perceptions towards transit bus electrification that include trip purpose, attitudes towards environmental issues and environmental impacts of BEBs, and certain non-instrumental ride factors such as ride comfort and social image. A better understanding of the importance of electrification to transit riders can help transit service providers adjust their marketing decisions and their systemwide operations to accommodate preferences towards BEBs.
Estimating Carbon Dioxide Emissions in Two California Cities Using Bayesian Inversion and Satellite Measurements
NASA's Orbiting Carbon Observatories (OCO-2 and OCO-3) provide measurements of column-averaged carbon dioxide concentrations (XCO 2 ) with sufficient spatial resolution and precision to constrain bottom-up estimates of CO 2 fluxes at regional scales. We use Bayesian inversion methods assimilating satellite retrievals to improve estimates of CO 2 fluxes in the South Coast Air Basin (SoCAB) which surrounds Los Angeles, and in the San Francisco Bay Area Air Basin (SFBA). We study 2020 to understand the impact of the COVID-19 lockdowns and an active wildfire season. Our results indicated that a 50% (30%) reduction in CO 2 emissions relative to 2015 during the COVID-19 lockdown period was consistent with OCO measurements for SFBA (SoCAB). We find that posterior wildfire emissions differed significantly from the prior at the scale of individual wildfires, though with large uncertainties, and that wildfire emissions in SFBA are significant, attributing 72% of the region's CO 2 emissions during August 2020 to wildfires.
GLObal Building heights for Urban Studies (UT-GLOBUS) for city- and street- scale urban simulations: Development and first applications
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