Chris Frey
Also known as: Henry C. Frey, H.C. Frey
variability, uncertainty, emissions, air pollution, air quality, exposure, risk, transportation, vehicle, energy, power generation
Dr. Frey's interests are broadly in energy and environmental systems, including: modeling and evaluation of advanced energy conversion (e.g.,combustion, gasification) and environmental control systems; measurement and modeling of real-world fuel use and emissions of onroad and nonroad vehicles; development and application of methods for quantification of variability and uncertainty and for sensitivity analysis in systems models; and exposure and risk analysis
Works (247)
Updated: October 29th, 2024 18:00
2024 journal article
Challenges and opportunities for research supporting cumulative impact assessments at the United States environmental protection agency's office of research and development
Lancet Regional Health - Americas, 30.
Contributors: N. Tulve *, A. Geller *, S. Hagerthey *, S. Julius *, E. Lavoie*, S. Mazur*, S. Paul*, H. Frey *
open access via doi.org (publisher)
Source: ORCID
Added: February 10, 2024
2023 journal article
Identifying emissions hotspots and strategies to reduce real-world fuel use and emissions for passenger rail: A spatially resolved approach
SCIENCE OF THE TOTAL ENVIRONMENT, 896.
author keywords: Emission hotspots; Locomotive power demand; Passenger train; Spatial variability
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: December 18, 2023
2023 journal article
Redefining exposure science to advance research supporting cumulative impacts, environmental justice, and decision-making
Journal of Exposure Science and Environmental Epidemiology, 33(6), 843–845.
Contributors: N. Tulve *, A. Guiseppi-Elie*, A. Geller *, C. Ward-Caviness *, S. Paul*, E. Lavoie*, L. Rivers *, H. Frey *
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: February 10, 2024
2023 journal article
Simple Diesel Train Fuel Consumption Model for Real-Time Train Applications
ENERGIES, 16(8).
Contributors: K. Ahn *, A. Aredah *, H. Rakha *, T. Wei n & H. Frey n
author keywords: diesel train; energy consumption model; train simulation
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 21, 2023
2022 journal article
Contribution of Cold Starts to Real-World Trip Emissions for Light-Duty Gasoline Vehicles
ATMOSPHERE, 14(1).
author keywords: vehicle; emissions; measurement; exhaust; cold start; air pollution; gasoline
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: December 28, 2022
2022 journal article
Fuel use and emission rates reduction potential for light-duty gasoline vehicle eco-driving
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 109.
author keywords: Driving strategy; Fuel consumption; Air pollution; Tailpipe exhaust; Emission hotspot; Autonomous vehicle
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 15, 2022
2022 journal article
Intermodal comparison of tailpipe emission rates between transit buses and private vehicles for on-road passenger transport
ATMOSPHERIC ENVIRONMENT, 281.
author keywords: Transit bus; Private vehicle; Emissions; Passenger load; Carbon dioxide
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 20, 2022
2022 article
Microenvironment Tracker (MicroTrac) model to estimate time-location of individuals for air pollution exposure assessments: model evaluation using smartphone data
Breen, M. S. S., Xu, Y., Frey, H. C., Breen, M., & Isakov, V. (2022, December 16). JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY, Vol. 12.
author keywords: Smartphone; GPS; Microenvironment; exposure assessment; Air pollution
MeSH headings : Humans; Smartphone; Air Pollution / analysis; Air Pollutants / analysis; Time; Environmental Pollutants; Environmental Exposure / analysis; Environmental Monitoring / methods
TL;DR:
This study demonstrates the extended capability of using ubiquitous smartphone data with MicroTrac to help reduce time-location uncertainty in air pollution exposure models for epidemiologic and exposure field studies.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: January 9, 2023
2021 conference paper
An illustrative case study of the contribution of commuting to PM<sub>2.5</sub>exposures in Hong Kong
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2021-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85120584014&partnerID=MN8TOARS
Contributors: S. Eluri & H. Frey
Source: ORCID
Added: February 10, 2024
2021 journal article
Characterizing Fuel Use and Emission Hotspots for a Diesel-Operated Passenger Rail Service
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 55(15), 10633–10644.
Contributors: N. Rastogi n & H. Frey n
author keywords: passenger train emissions; emission hotspots; spatial variability; hotspot location
MeSH headings : Air Pollutants / analysis; Gasoline / analysis; Vehicle Emissions / analysis
TL;DR:
The method demonstrated here can be applied to other passenger train services to assess key trends in hotspot locations and factors that explain the occurrence of hotspots and identify factors differentiating hotspots from non-hotspots.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: July 17, 2021
2021 journal article
Factors affecting variability in infiltration of ambient particle and gaseous pollutants into home at urban environment
BUILDING AND ENVIRONMENT, 206.
Contributors: M. Hossain n, W. Che *, H. Frey n & A. Lau *
author keywords: PM2.5; NO2; O-3; Infiltration factors; Predictors; Home
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: September 15, 2021
2021 journal article
Multi-scale evaluation of diesel commuter rail fuel use, emissions, and eco-driving
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 99.
author keywords: Public transport; Diesel locomotive; Energy; Air pollution; Emission hotspot
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 12, 2021
2021 article
Sensitivity of light duty vehicle tailpipe emission rates from simplified portable emission measurement systems to variation in engine volumetric efficiency
Wei, T., & Frey, H. C. (2021, June 10). JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, Vol. 6.
MeSH headings : Air Pollutants / analysis; Gasoline / analysis; Motor Vehicles; Vehicle Emissions / analysis
TL;DR:
Methods demonstrated here for estimating VE enable accurate quantification of emission rates, thereby enabling use of these PEMS for policy-relevant applications such as technology assessments, trends analysis, and emissions inventories.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: May 6, 2021
2020 conference paper
Application of transit bus emissions model to emission estimation: Case study for a wolfline transit bus line at North Carolina State University
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2020-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85104853939&partnerID=MN8TOARS
Contributors: T. Wei, H. Frey & W. Yuan
Source: ORCID
Added: February 10, 2024
2020 journal article
Combined effects of increased O-3 and reduced NO2 concentrations on short-term air pollution health risks in Hong Kong
ENVIRONMENTAL POLLUTION, 270.
Contributors: M. Hossain n, H. Frey n, P. Louie * & A. Lau *
author keywords: Nitrogen dioxide; Ozone; Short-term health risk; Health risk tradeoffs; Control measures
MeSH headings : Air Pollutants / analysis; Air Pollution / analysis; Hong Kong; Nitrogen Dioxide / analysis; Ozone / analysis; Particulate Matter / analysis
TL;DR:
The results show that the emission control measures resulting in NO2, SO2, and PM reductions over the past decade have effectively reduced the AR over Hong Kong, even though these control measures may have partially contributed to an increase in O3 concentrations.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 15, 2021
2020 conference paper
Effect of changes since 2017 on the quality, credibility, and integrity of scientific review of national ambient air quality standards
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2020-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85104833715&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: February 10, 2024
2020 journal article
Evaluation of the Precision and Accuracy of Cycle-Average Light Duty Gasoline Vehicles Tailpipe Emission Rates Predicted by Modal Models
TRANSPORTATION RESEARCH RECORD, 2674(7), 566–584.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 20, 2020
2020 journal article
Factors affecting variability in fossil-fueled transit bus emission rates
ATMOSPHERIC ENVIRONMENT, 233.
author keywords: Transit bus; Exhaust emissions; Bus size; Passenger load
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 29, 2020
2020 journal article
Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools
INDOOR AIR, 31(1), 170–187.
author keywords: fine particulate matter (PM2.5; indoor air quality; nitrogen dioxide (NO2); ozone (O-3); respirable particulate matter (PM10); school exposure
MeSH headings : Air Pollutants / analysis; Air Pollution, Indoor / statistics & numerical data; Child; Environmental Monitoring; Gases; Humans; Schools
TL;DR:
Infiltration factors derived from linear regression models provide useful information on outdoor infiltration and help address the gap in generalizable parameter values that can be used to predict school microenvironmental concentrations.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science
Added: September 21, 2020
2020 journal article
Geospatial Variation of Real-World Tailpipe Emission Rates for Light-Duty Gasoline Vehicles
Environmental Science & Technology, 54(14), 8968–8979.
Contributors: T. Khan n , H. Frey n, N. Rastogi n & T. Wei n
MeSH headings : Air Pollutants / analysis; Carbon Dioxide / analysis; Carbon Monoxide; Environmental Monitoring; Gasoline / analysis; Motor Vehicles; Nitrogen Oxides / analysis; Vehicle Emissions / analysis
TL;DR:
Spatial variability in real-world on-road tailpipe light duty gasoline vehicle nitrogen oxides, hydrocarbon, carbon monoxide, and carbon dioxide emission rates, the locations of emissions hotspots, and factors that explain spatial variability are quantified.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: July 9, 2020
2020 conference paper
Locomotive fuel use and emission rates: Effects of transients and train consists
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2020-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85104863944&partnerID=MN8TOARS
Contributors: N. Rastogi & H. Frey
Source: ORCID
Added: February 10, 2024
2020 journal article
Potential for metro rail energy savings and emissions reduction via eco-driving
APPLIED ENERGY, 268.
author keywords: Public transport; Automatic train operation; Energy efficiency; Eco-driving; Electricity; Markov chain
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 22, 2020
2020 conference paper
Potential for subway energy savings and emissions reductions based on inter-run variability in speed trajectories: A case study of Baltimore subway
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2020-June. http://www.scopus.com/inward/record.url?eid=2-s2.0-85104829385&partnerID=MN8TOARS
Contributors: W. Yuan & H. Frey
Source: ORCID
Added: February 10, 2024
2020 journal article
Quantification of Sources of Variability of Air Pollutant Exposure Concentrations Among Selected Transportation Microenvironments
TRANSPORTATION RESEARCH RECORD, 2674(9), 395–411.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: July 27, 2020
2020 journal article
Real-world activity, fuel use, and emissions of heavy-duty compressed natural gas refuse trucks
SCIENCE OF THE TOTAL ENVIRONMENT, 761.
Contributors: G. Sandhu, H. Frey n, S. Bartelt-Hunt * & E. Jones *
author keywords: Compressed natural gas; Refuse truck; Heavy-duty vehicles; PEMS; Tailpipe emissions; MOVES
TL;DR:
Results from this study can be used to improve solid waste life cycle and tailpipe emission factor models and, when combined with previous studies on diesel refuse trucks, evaluate the effect on fuel use and emissions from adoption of CNG refuse trucks.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 15, 2021
2020 journal article
The need for a tighter particulate-matter air-quality standard
New England Journal of Medicine, 383(7), 680–683.
Contributors: H. Frey n, P. Adams n, J. Adgate n, G. Allen n, J. Balmes n, K. Boyle n, J. Chow n, D. Dockery n
Source: ORCID
Added: February 10, 2024
2020 journal article
Variability in Measured Real-World Operational Energy Use and Emission Rates of a Plug-In Hybrid Electric Vehicle
Energies, 13(5).
Contributors: H. Frey n, X. Zheng n & J. Hu n
author keywords: light duty gasoline vehicle; portable emission measurement system; carbon dioxide emissions; carbon monoxide emissions; nitrogen oxides emissions; hydrocarbon emissions; cold start
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Source: ORCID
Added: March 5, 2020
2019 journal article
Air Pollution at College Football Games: Developing a Methodology for Measuring Air Pollutant Exposure in a Sport Event Microenvironment
Event Management, 23(3), 399–412.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Crossref, NC State University Libraries
Added: April 8, 2023
2019 journal article
Comparison of real-world vehicle fuel use and tailpipe emissions for gasoline-ethanol fuel blends
FUEL, 249, 352–364.
Contributors: W. Yuan n , H. Frey n, T. Wei n, N. Rastogi n, S. VanderGriend*, D. Miller *, L. Mattison*
author keywords: Ethanol; Octane; Real-world driving; Portable emission measurement system; Exhaust emissions
Sources: Web Of Science, NC State University Libraries, ORCID
Added: May 6, 2019
2019 journal article
Effect of Air-Conditioning on Light Duty Gasoline Vehicles Fuel Economy
TRANSPORTATION RESEARCH RECORD, 2673(5), 131–141.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 15, 2019
2019 journal article
PRAISE -HK: A personalized real-time air quality informatics system for citizen participation in exposure and health risk management
SUSTAINABLE CITIES AND SOCIETY, 54.
author keywords: Air pollution; Personalized exposure; Individual health sensitivity; Citizen engagement
TL;DR:
A system that empowers the public with personalized information on air quality and exposure health risk, and is an example of the use of collective intelligence in a smart city to engage citizens in learning about and managing their own exposure to air pollution.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 20, 2020
2019 journal article
Quantification of Energy Saving Potential for A Passenger Train Based on Inter-Run Variability in Speed Trajectories
TRANSPORTATION RESEARCH RECORD, 2673(5), 153–165.
Contributors: W. Yuan n , H. Frey n & N. Rastogi n
TL;DR:
Empirical fuel use data from a portable measurement emission measurement system and empirical speed trajectories measured using a global positioning system receiver were used to verify and quantify real-world energy consumption variability and the variability in empiricalspeed trajectories.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 15, 2019
2018 journal article
A review of factors impacting exposure to PM2.5, ultrafine particles and black carbon in Asian transport microenvironments
Atmospheric Environment, 187, 301–316.
Contributors: P. Kumar *, A. Patton *, J. Durant * & H. Frey n
author keywords: Air pollution; Exposure; Asian cities; Transport microenvironments; Airborne ultrafine particles; Black carbon; PM2.5
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Crossref, NC State University Libraries, ORCID
Added: February 5, 2020
2018 journal article
Dynamics of coarse and fine particle exposure in transport microenvironments
NPJ CLIMATE AND ATMOSPHERIC SCIENCE, 1(1).
Contributors: P. Kumar *, I. Rivas *, A. Singh *, V. Ganesh*, M. Ananya* & H. Frey n
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 4, 2019
2018 journal article
Effect of Light Duty Vehicle Performance on a Driving Style Metric
TRANSPORTATION RESEARCH RECORD, 2672(25), 67–78.
Contributors: S. Tanvir n, H. Frey n & N. Rouphail n
TL;DR:
Findings from this study imply that the choice of vehicle does not significantly alter the natural driving style of a driver, and develops a metric for driving style termed “envelope deviation,” which is a distribution of gaps between microscale activity (1 Hz) and fleet average envelope.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: May 28, 2019
2018 journal article
Indoor Exposure to Ambient Particles and Its Estimation Using Fixed Site Monitors
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 53(2), 808–819.
MeSH headings : Air Pollutants; Air Pollution, Indoor; Environmental Exposure; Environmental Monitoring; Hong Kong; Particle Size; Particulate Matter; Seasons
TL;DR:
The methodology demonstrated to assess concordance between FSMs and exposure measurement sites can be applied more broadly to help reduce exposure error, which may help to interpret seasonal variations in health estimates.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 11, 2019
2018 journal article
Trends in on-road transportation, energy, and emissions
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 68(10), 1015–1024.
Contributors: S. Altshuler*, A. Ayala *, S. Collet*, J. Chow*, H. Frey n, R. Shaikh *, E. Stevenson*, M. Walsh, J. Watson *
TL;DR:
Air Quality Consultant, Danville, CA, USA; Air Pollution Control Officer and Executive Director, Sacramento Metropolitan Air Quality Management District, Sacramento, California, USA ; Executive Engineer, Toyota Motor North America, Inc., Ann Arbor, MI, USA.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 16, 2018
2018 review
Trends in onroad transportation energy and emissions
[Review of ]. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 68(6), 514–563.
Contributors: H. Frey n
TL;DR:
Fossil fuels are likely to continue to be the major source of on-road vehicle energy consumption and fuel economy and emission standards are generally effective in achieving reductions per unit of vehicle activity, however, the number of vehicles and miles traveled will increase.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2017 journal article
Characterization of PM2.5 exposure concentration in transport microenvironments using portable monitors
ENVIRONMENTAL POLLUTION, 228, 433–442.
author keywords: Portable monitors; PM2.5; Transport microenvironments; Minimum sample size; Hong Kong
MeSH headings : Air Pollutants / analysis; Air Pollution / analysis; Air Pollution, Indoor / analysis; Carbon Monoxide; Environmental Monitoring / instrumentation; Environmental Monitoring / methods; Hong Kong; Particle Size; Particulate Matter / analysis; Seasons; Ventilation
TL;DR:
A feasible protocol on the calibration and application of portable monitors in TME air quality measurement is provided and a method for estimating minimum sample size is developed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2017 journal article
Comparison of real-world and certification emission rates for light duty gasoline vehicles
SCIENCE OF THE TOTAL ENVIRONMENT, 622, 790–800.
author keywords: Certification tests; Emission standards; PEMS; Chassis dynamometer; Driving cycles; Cold start emissions
TL;DR:
A systematic comparison of the real-world emission rates of U.S. light duty gasoline vehicles (LDGVs) versus CL, and emission standards has not been previously reported, and comparisons of CAERs and standards are sensitive to cold start emissions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2017 conference paper
Development of simplified models of CNG, diesel, and hybrid transit bus energy use
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039153359&partnerID=MN8TOARS
Contributors: T. Wei, T. Khan & H. Frey
Source: ORCID
Added: February 10, 2024
2017 journal article
Factors affecting variability in PM 2.5 exposure concentrations in a metro system
Environmental Research, 160, 20–26.
author keywords: PM2.5; Underground metro; Above-ground metro; Train in-cabin; Station platform; Hong; Kong
MeSH headings : Particulate Matter / analysis; Transportation Facilities / statistics & numerical data
TL;DR:
The results help more accurately quantify commuting PM2.5 exposure on a metro system, and can be used to improve population‐based exposure simulation models.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Crossref, NC State University Libraries, ORCID
Added: February 5, 2020
2017 conference paper
Identifying and transcending ideological barriers in the climate change public policy debate
Air and Waste Management Association, A and WMA - Finding Common Ground on Climate Change Mitigation and Adaptation, 2017-October, 8–17. http://www.scopus.com/inward/record.url?eid=2-s2.0-85052332630&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: February 10, 2024
2017 conference paper
Key factors affecting inter-county variability in moves county-level energy inventory
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039169682&partnerID=MN8TOARS
Contributors: T. Khan & H. Frey
Source: ORCID
Added: February 10, 2024
2017 conference paper
Procedure for evaluation of retrofitted scr-based emission control system for a passenger railroad locomotive
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039160003&partnerID=MN8TOARS
Contributors: N. Rastogi & H. Frey
Source: ORCID
Added: February 10, 2024
2017 conference paper
Procedure for measuring and comparing fuel use and gaseous emissions for gas-direct injection versus port fuel injection vehicles
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039147517&partnerID=MN8TOARS
Contributors: S. Singh & H. Frey
Source: ORCID
Added: February 10, 2024
2017 conference paper
Quantification of transit train activity data for energy consumption estimation
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-85039168169&partnerID=MN8TOARS
Contributors: W. Yuan, H. Frey & Y. Sun
Source: ORCID
Added: February 10, 2024
2017 journal article
Real-World Freeway and Ramp Activity and Emissions for Light-Duty Gasoline Vehicles
TRANSPORTATION RESEARCH RECORD, 2627(2627), 17–25.
Contributors: H. Frey n, M. Delavarrafiee n & S. Singh n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2017 journal article
Real-world fuel use and gaseous emission rates for flex fuel vehicles operated on E85 versus gasoline
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 68(3), 235–254.
Contributors: M. Delavarrafiee n & H. Frey n
MeSH headings : Air Pollutants / analysis; Air Pollution; Carbon Monoxide / analysis; Ethanol; Gasoline; Hydrocarbons / analysis; Motor Vehicles; Nitric Oxide / analysis; Nitrogen Oxides / analysis; Ozone / analysis; Renewable Energy; Vehicle Emissions / analysis
TL;DR:
E85 leads to significant reductions in tailpipe nitrogen oxide (NOx) and carbon monoxide (CO) emission rates compared with gasoline, indicating a potential benefit for ozone air quality management in NOx-limited areas.
(via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2016 conference paper
Assessing the impact of real-world driving cycles, fuel economy and tailpipe exhaust emissions on eco-rating of passenger cars
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2758–2783. http://www.scopus.com/inward/record.url?eid=2-s2.0-85014833745&partnerID=MN8TOARS
Contributors: N. Rastogi & H. Frey
Source: ORCID
Added: February 10, 2024
2016 journal article
Comparison of Vehicle-Specific Fuel Use and Emissions Models Based on Externally and Internally Observable Activity Data
TRANSPORTATION RESEARCH RECORD, 2570(2570), 30–38.
Contributors: J. Hu n, H. Frey & S. Washburn *
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2016 article
Dose-Response Models are Conditional on Determination of Causality
Frey, H. C. (2016, September). RISK ANALYSIS, Vol. 36, pp. 1751–1754.
Contributors: H. Frey
TL;DR:
Causality is a key underlying issue in this special collection of articles regarding uncertainties in health risk estimates for “criteria” air pollutants in the United States and estimates of human health benefits of the National Ambient Air Quality Standards (NAAQS).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2016 journal article
Effect of Biodiesel Fuels on Real-World Emissions of Passenger Locomotives
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(21), 12030–12039.
MeSH headings : Biofuels; Gasoline; Nitrogen Oxides; Particulate Matter; Vehicle Emissions
TL;DR:
The results indicate substantial potential to reduce in-use locomotive emissions for existing older locomotives, with the exception of NOx.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2016 journal article
Evaluation of Light-Duty Gasoline Vehicle Rated Fuel Economy Based on In-Use Measurements
TRANSPORTATION RESEARCH RECORD, 2570(2570), 21–29.
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2016 conference paper
Gasoline vehicle fuel efficiency and emissions for gas-direct injection versus port-fuel injection
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2823–2844. http://www.scopus.com/inward/record.url?eid=2-s2.0-85014864810&partnerID=MN8TOARS
Contributors: S. Singh & H. Frey
Source: ORCID
Added: February 10, 2024
2016 conference paper
Geospatial variation of real-world emissions from a passenger car
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2799–2822. http://www.scopus.com/inward/record.url?eid=2-s2.0-85014820615&partnerID=MN8TOARS
Contributors: T. Khan & H. Frey
Source: ORCID
Added: February 10, 2024
2016 journal article
Highway Vehicle Emissions Avoided by Diesel Passenger Rail Service Based on Real-World Data
Urban Rail Transit, 2(3-4), 153–171.
Contributors: B. Graver n & H. Frey n
author keywords: Intercity rail; Energy intensity; Emissions; Carbon dioxide; Nitrogen oxides; Particulate matter
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: April 26, 2019
2016 conference paper
Procedure for real-world measurement and data analysis of a flex fuel vehicle operated on E85
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2689–2714. http://www.scopus.com/inward/record.url?eid=2-s2.0-85014816584&partnerID=MN8TOARS
Contributors: M. Delavarrafiee & H. Frey
Source: ORCID
Added: February 10, 2024
2016 journal article
Real-world activity, fuel use, and emissions of diesel side-loader refuse trucks
ATMOSPHERIC ENVIRONMENT, 129, 98–104.
Contributors: G. Sandhu n, H. Frey n, S. Bartelt-Hunt * & E. Jones *
author keywords: Diesel; Truck; Duty cycle; Exhaust emissions; Measurement; Nitrogen oxides; Particulate matter; Emission rates; Engine; MOVES; Weight
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
12. Responsible Consumption and Production
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2016 journal article
Sequential Measurement of Intermodal Variability in Public Transportation PM2.5 and CO Exposure Concentrations
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(16), 8760–8769.
Contributors: W. Che, H. Frey n & A. Lau
MeSH headings : Air Pollutants; Environmental Exposure; Environmental Monitoring; Hong Kong; Particle Size; Particulate Matter; Transportation
TL;DR:
Measured inter-run variability provides insight regarding the sample size needed to discriminate between microenvironments with increased statistical significance and policy-relevant insights for exposure mitigation and management in Hong Kong.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2015 article
A scientific perspective on the challenges and opportunities for: Multipollutant approaches to air quality management
EM: Air and Waste Management Association's Magazine for Environmental Managers, pp. 24–29. http://www.scopus.com/inward/record.url?eid=2-s2.0-84920474504&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: February 10, 2024
2015 article
Clean Air Scientific Advisory Committee advice on the ozone standards
EM: Air and Waste Management Association's Magazine for Environmental Managers, Vol. 65, pp. 9–10. http://www.scopus.com/inward/record.url?eid=2-s2.0-84946154078&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: February 10, 2024
2015 journal article
Comparison of Over-the-Rail and Rail Yard Measurements of Diesel Locomotives
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 49(21), 13031–13039.
MeSH headings : Air Pollutants / analysis; Gasoline / analysis; Transportation; United States; United States Environmental Protection Agency; Vehicle Emissions / analysis
TL;DR:
Measurements of one-way trips between Raleigh and Charlotte, NC, on 7 locomotives and 18 sets of measurements in the rail yard showed real-world duty cycles differed from those used for regulatory analyses, leading to statistically significant lower cycle average NOx and HC emission rates.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2015 journal article
Comparison of Sources of Variability in School Age Children Exposure to Ambient PM2.5
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 49(3), 1511–1520.
MeSH headings : Adolescent; Air Pollutants / analysis; Child; Environmental Exposure / analysis; Humans; Models, Theoretical; Particulate Matter / analysis; Seasons; United States
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2015 conference paper
Comparison of real-world and MOVES estimated emissions for heavy-duty diesel refuse trucks
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 1702–1711. http://www.scopus.com/inward/record.url?eid=2-s2.0-84983775253&partnerID=MN8TOARS
Contributors: G. Sandhu, H. Frey, S. Bartelt-Hunt & E. Jones
Source: ORCID
Added: February 10, 2024
2015 journal article
Integrating a simplified emission estimation model and mesoscopic dynamic traffic simulator to efficiently evaluate emission impacts of traffic management strategies
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 37, 123–136.
Contributors: X. Zhou*, S. Tanvir n, H. Lei*, J. Taylor *, B. Liu n, N. Rouphail n , H. Frey n
author keywords: Emission estimation; Dynamic traffic assignment; Integrated traffic emission model; Cross-resolution model
TL;DR:
A computationally efficient and theoretically rigorous dynamic traffic assignment (DTA) model and its solution algorithm for a number of emerging emissions and fuel consumption related applications that require both effective microscopic and macroscopic traffic stream representations.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2015 journal article
Measurement and Evaluation of Real-World Speed and Acceleration Activity Envelopes for Light-Duty Vehicles
TRANSPORTATION RESEARCH RECORD, 2503(2503), 128–136.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2015 journal article
Simplified method for comparing emissions in roundabouts and at signalized intersections
Transportation Research Record, 2517(2517), 48–60.
Contributors: K. Salamati*, N. Rouphail* , H. Frey n, B. Liu n & B. Schroeder*
TL;DR:
This method was built on a large sample size of real-world second-by-second vehicle trajectories, traffic volumes, and other traffic characteristics collected at signalized intersections and roundabouts in six U.S. states, and showed that during oversaturation periods, the amount of produced emissions increased steadily in roundabouts but increased a large amount at signals.
(via Semantic Scholar)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2015 journal article
Variability in Light-Duty Gasoline Vehicle Emission Factors from Trip-Based Real-World Measurements
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 49(20), 12525–12534.
MeSH headings : Automobile Driving; Carbon Dioxide / analysis; Electricity; Gasoline; Models, Theoretical; Motor Vehicles / standards; Nitric Oxide / analysis; North Carolina; United States; United States Environmental Protection Agency; Vehicle Emissions / analysis
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
Application of AIMSUN microsimulation model to estimate emissions on signalized arterial corridors
Transportation Research Record, 2428(2428), 75–86.
Contributors: A. Anya*, N. Rouphail* , H. Frey n & B. Schroeder n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2014 journal article
Assessment of the Effect of Population and Diary Sampling Methods on Estimation of School-Age Children Exposure to Fine Particles
RISK ANALYSIS, 34(12), 2066–2079.
author keywords: Children; exposure; microenvironment; modeling; particulate matter; variability
MeSH headings : Child; Environmental Exposure; Humans; Markov Chains; North Carolina; Particulate Matter
TL;DR:
Exposure simulation results are robust to the two population sampling methods evaluated, and are sensitive to the choice of method for simulating longitudinal diaries, particularly when analyzing results for specific microenvironments or for exposures exceeding a benchmark of concern.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
Comparison of Fine Particulate Matter and Carbon Monoxide Exposure Concentrations for Selected Transportation Modes
TRANSPORTATION RESEARCH RECORD, (2428), 54–62.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
2014 conference paper
Comparison of real-world emission rates of a locomotive engine operating on diesel and biodiesel
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 991–999. http://www.scopus.com/inward/record.url?eid=2-s2.0-84939813222&partnerID=MN8TOARS
Contributors: B. Graver, J. Hu & H. Frey
Source: ORCID
Added: February 10, 2024
2014 conference paper
Geographic and seasonal variations in air exchange rate and their impacts on the estimation of children's exposure to ambient PM<sub>2.5</sub>
Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate, 836–839. http://www.scopus.com/inward/record.url?eid=2-s2.0-84924657052&partnerID=MN8TOARS
Contributors: W. Che, H. Frey, A. Lau & J. Fung
Source: ORCID
Added: February 10, 2024
2014 journal article
In-use activity, fuel use, and emissions of heavy-duty diesel roll-off refuse trucks
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 65(3), 306–323.
Contributors: G. Sandhu n, H. Christopher Frey n, S. Bartelt-Hunt * & E. Jones *
MeSH headings : Air Pollutants / chemistry; Environmental Monitoring / methods; Gasoline; Motor Vehicles; Refuse Disposal; Time Factors; Vehicle Emissions
TL;DR:
The objectives of this study were to quantify real-world activity, fuel use, and emissions for heavy duty diesel roll-off refuse trucks; evaluate the contribution of duty cycles and emissions controls to variability in cycle average fuel use and emission rates; and compare empirical cycle average emission rates with the U.S. Environmental Protection Agency’s MOVES emission factor model predictions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
12. Responsible Consumption and Production
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
In-use measurement of the activity, fuel use, and emissions of front-loader refuse trucks
ATMOSPHERIC ENVIRONMENT, 92, 557–565.
Contributors: G. Sandhu n, H. Frey n, S. Bartelt-Hunt * & E. Jones *
author keywords: Diesel refuse truck; Duty cycle; Exhaust emissions; Nitrogen oxides; Particulate matter; MOVES
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
12. Responsible Consumption and Production
(Web of Science)
14. Life Below Water
(OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2014 journal article
Method for Modeling Driving Cycles, Fuel Use, and Emissions for Over Snow Vehicles
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 48(14), 8258–8265.
Contributors: J. Hu n, H. Frey n, G. Sandhu n, B. Graver n, G. Bishop *, B. Schuchmann*, J. Ray*
MeSH headings : Carbon Monoxide / analysis; Gasoline; Kinetics; Linear Models; Models, Theoretical; Nitrogen Oxides / analysis; Off-Road Motor Vehicles; Particulate Matter / analysis; Snow; Vehicle Emissions / analysis
TL;DR:
As input to a winter use plan, activity, fuel use, and tailpipe exhaust emissions of over snow vehicles (OSV), including five snow coaches and one snowmobile, were measured on a designated route in Yellowstone National Park and recommendations are made regarding how real-world OSV activity, Fuel use and emissions data can be improved.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2013 journal article
Comparing exposure metrics for the effects of fine particulate matter on emergency hospital admissions
JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY, 23(6), 627–636.
Contributors: E. Mannshardt n, K. Sucic n, W. Jiao n, F. Dominici *, H. Frey n, B. Reich n , M. Fuentes n
author keywords: ambient monitoring data; CMAQ; SHEDS; PM2.5
MeSH headings : Air Pollutants / toxicity; Emergency Service, Hospital / statistics & numerical data; Environmental Exposure; Humans; Particulate Matter; Patient Admission
TL;DR:
This paper investigates the sensitivity of the health effects estimates associated with short-term exposure to fine particulate matter with respect to three potential metrics for daily exposure: ambient monitor data, estimated values from a deterministic atmospheric chemistry model, and stochastic daily average human exposure simulation output.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2013 journal article
Comparison of Locomotive Emissions Measured During Dynamometer Versus Rail Yard Engine Load Tests
TRANSPORTATION RESEARCH RECORD, (2341), 23–33.
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2013 journal article
Effects of errors on vehicle emission rates from portable emissions measurement systems
Transportation Research Record, (2340), 10–19.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2013 journal article
Emissions estimation at multilane roundabouts
Transportation Research Record, (2389), 12–21.
Contributors: K. Salamati n, M. Coelho *, P. Fernandes *, N. Rouphail n , H. Frey n & J. Bandeira *
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: February 10, 2024
2013 journal article
Emissions estimation at multilane roundabouts effects of movement and approach lane
Transportation Research Record, (2389), 12–21.
Source: NC State University Libraries
Added: August 6, 2018
2013 journal article
Method for Measuring the Ratio of In-Vehicle to Near-Vehicle Exposure Concentrations of Airborne Fine Particles
TRANSPORTATION RESEARCH RECORD, (2341), 34–42.
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2013 journal article
Road Grade Measurement Using In-Vehicle, Stand-Alone GPS with Barometric Altimeter
JOURNAL OF TRANSPORTATION ENGINEERING-ASCE, 139(6), 605–611.
Contributors: B. Boroujeni n, H. Frey n & G. Sandhu n
author keywords: Vehicle; Emissions; Highway; Road grade; Engine load; Speed; Acceleration; Vertical curvature; Distance; Global positioning system (GPS)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2013 journal article
Road grade quantification based on global positioning system data obtained from real-world vehicle fuel use and emissions measurements
ATMOSPHERIC ENVIRONMENT, 85, 179–186.
Contributors: B. Yazdani Boroujeni n & H. Frey n
author keywords: Vehicle; Emissions; Road grade; GPS; Vehicle specific power
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2012 journal article
Assessment of Inter-Individual, Geographic, and Seasonal Variability in Estimated Human Exposure to Fine Particles
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 46(22), 12519–12526.
Contributors: W. Jiao n
MeSH headings : Aged; Air Pollutants / analysis; Cities; Computer Simulation; Environmental Monitoring / methods; Female; Humans; Inhalation Exposure; Male; Models, Theoretical; New York City; North Carolina; Particle Size; Particulate Matter / analysis; Seasons; Texas
TL;DR:
Variability in E(a)/C is a key factor that may help explain heterogeneity in C-R functions across cities and seasons, as a result of regional differences in housing stock and seasonal differences in air exchange rates.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2012 journal article
Effects of Engine Idling on National Ambient Air Quality Standards Criteria Pollutant Emissions from Nonroad Diesel Construction Equipment
TRANSPORTATION RESEARCH RECORD, (2270), 67–75.
Contributors: P. Lewis*, W. Rasdorf n, H. Frey n & M. Leming n
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2012 conference paper
Energy use and emissions from diesel and biodiesel blends for earthmoving equipment
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 609–616. http://www.scopus.com/inward/record.url?eid=2-s2.0-84907338054&partnerID=MN8TOARS
Source: ORCID
Added: February 10, 2024
2012 journal article
Engine and Duty Cycle Variability in Diesel Construction Equipment Emissions
JOURNAL OF ENVIRONMENTAL ENGINEERING, 139(2), 261–268.
Contributors: S. Abolhasani
author keywords: Diesel engines; Air pollution; Emissions; Construction equipment; Pollutants; Fuel use; Greenhouse gas
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2012 conference paper
Estimation of light-duty gasoline vehicle emissions avoided by passenger rail service in North Carolina
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 1001–1007. http://www.scopus.com/inward/record.url?eid=2-s2.0-84876198041&partnerID=MN8TOARS
Contributors: B. Graver & H. Christopher Frey
Source: ORCID
Added: February 10, 2024
2012 journal article
Evaluation of On-Site Fuel Use and Emissions over the Duration of a Commercial Building Project
JOURNAL OF INFRASTRUCTURE SYSTEMS, 18(2), 119–129.
Contributors: W. Rasdorf n
author keywords: Air pollution; Construction equipment; Engines; Emissions; Resource allocation; Pollutants; Project management; Fuel consumption; Commercial buildings
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2012 journal article
Evaluation of representativeness of site-specific fuel-based vehicle emission factors for route average emissions
Environmental Science and Technology, 46(12), 6867–6873.
Contributors: T. Lee *
MeSH headings : Motor Vehicles; Vehicle Emissions
TL;DR:
An approach to evaluate the representativeness of site-specific fuel-based vehicle emission factors, such as would be obtained using Remote Sensing Devices (RSDs), is demonstrated based on real-world data for 23 selected light duty gasoline vehicles.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Source: ORCID
Added: April 26, 2019
2012 journal article
Methodology for Estimating Emissions Inventories for Commercial Building Projects
Journal of Architectural Engineering, 18(3), 251–260.
Contributors: S. Marshall n
author keywords: Air pollution; Green construction; Green buildings; Construction equipment; Diesel engines; Emissions; Greenhouse gases; Emissions inventories; Pollutants; Sustainability
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: ORCID, Crossref
Added: April 26, 2019
2012 journal article
Modeling of Human Exposure to In-Vehicle PM2.5 from Environmental Tobacco Smoke
HUMAN AND ECOLOGICAL RISK ASSESSMENT, 18(3), 608–626.
Contributors: Y. Cao n & H. Frey
author keywords: tobacco smoke; vehicles; exposure; PM2.5; variability; inhalation
TL;DR:
Results of probabilistic study indicate that ETS is a key contributor to the in-vehicle average and high-end exposure, and factors that mitigate in- Vehicle ambient PM2.5 exposure lead to higher in-Vehicle ETS exposure,and vice versa.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2012 journal article
Portable Emission Measurement System for Emissions of Passenger Rail Locomotives
TRANSPORTATION RESEARCH RECORD, (2289), 56–63.
Contributors: H. Frey n
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2012 journal article
Real-world measurement and evaluation of duty cycles, fuels, and emission control technologies of heavy-duty trucks
Transportation Research Record, (2270), 180–187.
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2012 chapter
Techno-economic analysis of combined cycle systems
In Combined Cycle Systems for Near-Zero Emission Power Generation (pp. 306–328).
Contributors: H. Frey & Y. Zhu
Source: ORCID
Added: February 10, 2024
2012 journal article
Time series analysis of personal exposure to ambient air pollution and mortality using an exposure simulator
JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY, 22(5), 483–488.
Contributors: H. Chang *
author keywords: exposure modeling; particulate matter; time series analysis
MeSH headings : Air Pollution / adverse effects; Environmental Exposure / adverse effects; Environmental Exposure / statistics & numerical data; Humans; Markov Chains; Models, Statistical; Mortality; New York City / epidemiology; Particulate Matter / adverse effects; Risk Assessment; Seasons; Stochastic Processes
TL;DR:
A spatial hierarchical model is used to relate Census tract-level daily ambient concentrations and simulated exposures for a subset of the study period and modeling exposure via a statistical model reduces the computational burden associated with simulating personal exposures considerably.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
Assessing Effects of Operational Efficiency on Pollutant Emissions of Nonroad Diesel Construction Equipment
TRANSPORTATION RESEARCH RECORD, (2233), 11–18.
Contributors: P. Lewis*
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
Comparison of driving schedule project level MOVES emission factors to empirical data
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 2445–2454. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859175012&partnerID=MN8TOARS
Contributors: B. Liu
Source: ORCID
Added: April 26, 2019
2011 journal article
Comparison of real-world activity, fuel use, and emissions for selected light duty gasoline vehicles based on driving cycles
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 600–607. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859094415&partnerID=MN8TOARS
Contributors: Y. Sun
Source: ORCID
Added: April 26, 2019
2011 journal article
Development of a modal emissions model for a hybrid electric vehicle
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 16(6), 444–450.
Contributors: H. Zhai *, H. Christopher Frey n & N. Rouphail n
author keywords: Hybrid electric vehicle; Emissions; Driving cycle; Carbon dioxide; Nitrogen oxides; Engine load
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 6, 2018
2011 journal article
Fuel use and emission rates for F59PH locomotive engines tested on an engine dynamometer
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 614–619. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859054969&partnerID=MN8TOARS
Contributors: B. Graver
Source: ORCID
Added: April 26, 2019
2011 journal article
Geographic differences in inter-individual variability of human exposure to fine particulate matter
ATMOSPHERIC ENVIRONMENT, 45(32), 5684–5691.
Contributors: Y. Cao n
author keywords: Exposure; Particulate matter; Variability; Air exchange rate; Penetration factor; Deposition rate
TL;DR:
Geographic variability in the ratio of exposure to ambient concentration is estimated based on comparison of three modeling domains in different climate zones: (1) New York City; (2) Harris County in Texas, and (3) a six-county domain along the I-40 corridor in North Carolina.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
In-Use Measurement of Activity, Energy Use, and Emissions of a Plug-in Hybrid Electric Vehicle
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 45(20), 9044–9051.
Contributors: B. Graver n
MeSH headings : Air Pollutants / analysis; Electric Power Supplies; Electricity; Environmental Monitoring; Gasoline; Vehicle Emissions / analysis
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 journal article
Incorporating vehicle portable emissions measurement systems into the classroom
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 620–637. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859028524&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2011 journal article
Modeling of hybrid and plug-in hybrid electric vehicle energy use and emissions based on in-use measurement
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 608–613. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859038443&partnerID=MN8TOARS
Contributors: B. Graver
Source: ORCID
Added: April 26, 2019
2011 journal article
Modeling of in-vehicle human exposure to ambient fine particulate matter
ATMOSPHERIC ENVIRONMENT, 45(27), 4745–4752.
Contributors: X. Liu n
author keywords: Particulate matter; Vehicles; Exposure; Variability; Sensitivity; Simulation
TL;DR:
An alternative modeling approach is explored based on estimation of near-road PM(2.5) concentration and an in-vehicle mass balance and recommendations are made for updating exposure models and implementation of the alternative approach.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2011 conference paper
Variability in gram per gallon vehicle emission factors with engine load and among driving cycles
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 2335–2341. http://www.scopus.com/inward/record.url?eid=2-s2.0-84859179711&partnerID=MN8TOARS
Contributors: T. Lee & H. Frey
Source: ORCID
Added: April 26, 2019
2010 journal article
Assessment of Interindividual and Geographic Variability in Human Exposure to Fine Particulate Matter in Environmental Tobacco Smoke
Risk Analysis, 31(4), 578–591.
Contributors: Y. Cao
author keywords: Environmental tobacco smoke; exposure; fine particulate matter; modeling; variability
MeSH headings : Algorithms; Environmental Exposure; Geography; Humans; Models, Theoretical; Particle Size; Smoke; Tobacco / chemistry; United States; United States Environmental Protection Agency
TL;DR:
A critical assessment was conducted of the methodology and data used in SHEDS‐PM for estimation of indoor exposure to ETS, and a mass‐balance‐based methodology for estimating in‐vehicle ETS PM2.5 concentration is evaluated.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Source: ORCID
Added: April 26, 2019
2010 journal article
Comparative assessment of passenger railroad locomotives using portable emission measurement systems
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 7, 5249–5255. http://www.scopus.com/inward/record.url?eid=2-s2.0-79956260289&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2010 journal article
Comprehensive Field Study of Fuel Use and Emissions of Nonroad Diesel Construction Equipment
TRANSPORTATION RESEARCH RECORD, (2158), 69–76.
Contributors: H. Frey n
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2010 journal article
Estimating Diesel Vehicle Emission Factors at Constant and High Speeds for Short Road Segments
TRANSPORTATION RESEARCH RECORD, (2158), 19–27.
Contributors: H. Choi n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2010 journal article
Estimating In-Vehicle Concentration of and Exposure to Fine Particulate Matter Near-Roadway Ambient Air Quality and Variability in Vehicle Operation
TRANSPORTATION RESEARCH RECORD, (2158), 105–112.
Contributors: X. Liu n
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2010 conference paper
Estimating productivity-based fuel eifficiency and emissions factors of diesel construction equipment performing earthmoving activities
In N. M. B. Chimay J. Anumba, John Messner, & M. K. Parfitt (Eds.), Proceedings of the 6th International Conference on Innovation in Architecture, Engineering, and Construction. University Park, Pa. : Department of Architectural Engineering, Pennsylvania State University.
Ed(s): N. Chimay J. Anumba, . John Messner & M. Parfitt
Source: NC State University Libraries
Added: August 6, 2018
2010 journal article
Field Procedures for Real-World Measurements of Emissions from Diesel Construction Vehicles
JOURNAL OF INFRASTRUCTURE SYSTEMS, 16(3), 216–225.
Contributors: W. Rasdorf n
author keywords: Air pollution; Construction; Vehicles; Emissions; Life cycles; Pollutants; Sustainable development
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2010 chapter
Integrated gasification combined cycle (IGCC) power plant design and technology
In Advanced Power Plant Materials, Design and Technology (pp. 54–88).
Source: ORCID
Added: February 10, 2024
2010 conference paper
Measurement and comparison of locomotive engine emissions
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 7, 5272–5280. http://www.scopus.com/inward/record.url?eid=2-s2.0-79956274785&partnerID=MN8TOARS
Contributors: H. Frey, H. Choi, B. Graver & G. Sandhu
Source: ORCID
Added: April 26, 2019
2010 journal article
Method for in-use measurement and evaluation of the activity, fuel use, electricity use, and emissions of a plug-in hybrid diesel-electric school bus
Environmental Science and Technology, 44(9), 3601–3607.
Contributors: H. Choi n
MeSH headings : Air Pollutants / analysis; Automobile Driving; Electricity; Environmental Monitoring / methods; Gasoline / analysis; Humans; Motor Vehicles; Transportation; Vehicle Emissions / analysis
TL;DR:
The coupled VSP-MAP modeling approach enables assessment of a wide variety of driving conditions and comparisons of vehicles with different propulsion technologies.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2010 journal article
Quantifying the microscale activity, energy use, and emissions of a plug-in hybrid electric vehicle based on in-use data
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 1, 23–45. http://www.scopus.com/inward/record.url?eid=2-s2.0-79956211810&partnerID=MN8TOARS
Contributors: B. Graver
Source: ORCID
Added: April 26, 2019
2010 journal article
Vehicle-Specific Emissions Modeling Based upon on-Road Measurements
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 44(9), 3594–3600.
Contributors: H. Frey n
MeSH headings : Air Pollutants / analysis; Automobile Driving; Automobiles; Computer Simulation; Data Interpretation, Statistical; Environmental Monitoring / methods; Particulate Matter; Pressure; Regression Analysis; Transportation; Vehicle Emissions
TL;DR:
Vehicle-specific microscale fuel use and emissions rate models are developed based upon real-world hot-stabilized tailpipe measurements made using a portable emissions measurement system and are sensitive to episodic events in driving cycles such as high acceleration.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
A risk-based assessment and management framework for multipollutant air quality
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 1068–1080. http://www.scopus.com/inward/record.url?eid=2-s2.0-77952278636&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2009 journal article
Comparison of Flexible Fuel Vehicle and Life-Cycle Fuel Consumption and Emissions of Selected Pollutants and Greenhouse Gases for Ethanol 85 Versus Gasoline
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 59(8), 912–924.
Contributors: H. Zhai n
MeSH headings : Air Pollutants / analysis; Bioelectric Energy Sources; Carbon Dioxide / analysis; Ethanol / chemistry; Gasoline / analysis; Models, Theoretical; Vehicle Emissions / analysis
TL;DR:
Evaluated differences in fuel consumption and tailpipe emissions of flexible fuel vehicles (FFVs) operated on ethanol 85 (E85) versus gasoline imply that replacing gasoline with E85 reduces CO emissions, may moderately decrease NOx tail pipe emissions, and may increase HC tailpipe emission.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: August 6, 2018
2009 journal article
Development and Use of Emissions Inventories for Construction Vehicles
TRANSPORTATION RESEARCH RECORD, (2123), 46–53.
Contributors: P. Lewis n
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Effects of Idle Reduction Technologies on Real World Fuel Use and Exhaust Emissions of Idling Long-Haul Trucks
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 43(17), 6875–6881.
Contributors: H. Frey n
MeSH headings : Conservation of Energy Resources; Engineering; Equipment Design; Gasoline / analysis; Motor Vehicles / standards; United States; Vehicle Emissions / analysis; Vehicle Emissions / prevention & control
TL;DR:
Field data support more accurate assessments of avoided fuel use and emissions, and recommendations to encourage greater APU utilization by single drivers and to further develop infrastructure for SP are made.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 conference paper
Estimation of air carrier emissions at Raleigh-Durham international airport
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 4, 2502–2516. http://www.scopus.com/inward/record.url?eid=2-s2.0-77952383333&partnerID=MN8TOARS
Contributors: B. Graver & H. Frey
Source: ORCID
Added: April 26, 2019
2009 journal article
In-use measurement of the activity, energy use, and emissions of a plug-in hybrid electric vehicle
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 1127–1144. http://www.scopus.com/inward/record.url?eid=2-s2.0-77952244297&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2009 journal article
In-use measurement of the activity, fuel use, and emissions of eight cement mixer trucks operated on each of petroleum diesel and soy-based B20 biodiesel
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 14(8), 585–592.
Contributors: H. Frey n
author keywords: In-use; Emissions; Fuel use; Diesel; B20; Biodiesel; Cement mixer; Duty cycle
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Life Cycle Inventory Energy Consumption and Emissions for Biodiesel versus Petroleum Diesel Fueled Construction Vehicles
Environmental Science & Technology, 43(16), 6398–6405.
Contributors: S. Pang n
MeSH headings : Bioelectric Energy Sources; Cities; Fossils; Gasoline / analysis; Geography; Motor Vehicles; Soybeans / growth & development; Uncertainty; Vehicle Emissions / analysis
TL;DR:
The key sources of uncertainty in the B20 LCI are vehicle emission factors, and there are environmental trade-offs such as for rural vs urban areas.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: ORCID, Crossref
Added: April 26, 2019
2009 journal article
Life cycle inventory energy consumption and emissions for biodiesel versus petroleum diesel fueled construction vehicles
Environmental Science & Technology, 43(16), 6398–6405.
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2009 journal article
Light duty gasoline vehicle emission factors at high transient and constant speeds for short road segments
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 14(8), 610–614.
Contributors: H. Choi n & H. Christopher Frey n
author keywords: Speed correction factor; Segment emissions; Near-roadway; Air quality study
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2009 journal article
Measurement of the energy use and emissions of passenger rail locomotives using a portable emission measurement system
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 1145–1157. http://www.scopus.com/inward/record.url?eid=2-s2.0-77952268050&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2009 journal article
Modeling of in-vehicle PM2.5 exposure using the stochastic human exposure and dose simulation model
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2, 1087–1100. http://www.scopus.com/inward/record.url?eid=2-s2.0-77952286694&partnerID=MN8TOARS
Contributors: X. Liu
Source: ORCID
Added: April 26, 2019
2009 review
Probabilistic Exposure Analysis for Chemical Risk Characterization
[Review of ]. TOXICOLOGICAL SCIENCES, 109(1), 4–17.
Contributors: K. Bogen *
author keywords: applied probability analysis; assessment methods; environmental chemicals; modeling; Monte Carlo; toxicity risk characterization
MeSH headings : Decision Making, Organizational; Environmental Exposure; Environmental Pollutants / toxicity; Hazardous Substances / toxicity; Humans; Models, Statistical; Monte Carlo Method; Risk Assessment / methods; Risk Management; Triage
TL;DR:
It is concluded that existing methods suffice for effective application of PEA to support quantitative analyses of the risk of chemically induced toxicity that play an increasing role in key decision-making objectives involving health protection, triage, civil justice, and criminal justice.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
16. Peace, Justice and Strong Institutions
(OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Real-World Energy Use and Emission Rates for Idling Long-Haul Trucks and Selected Idle Reduction Technologies
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 59(7), 857–864.
Contributors: H. Frey n
MeSH headings : Conservation of Energy Resources; Equipment Design; Gasoline; Motor Vehicles; Vehicle Emissions / analysis
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Regional On-Road Vehicle Running Emissions Modeling and Evaluation for Conventional and Alternative Vehicle Technologies
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 43(21), 8449–8455.
Contributors: H. Frey n
MeSH headings : Environmental Restoration and Remediation / methods; Gasoline / analysis; Models, Chemical; Motor Vehicles; Time Factors; Vehicle Emissions / analysis
TL;DR:
Emissions for all pollutants generally decreased with an increase in the market share of alternative vehicle technologies, and modest improvements in fuel economy may be offset by VMT growth and reductions in overall average speed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2009 journal article
Requirements and Incentives for Reducing Construction Vehicle Emissions and Comparison of Nonroad Diesel Engine Emissions Data Sources
JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT-ASCE, 135(5), 341–351.
Contributors: P. Lewis n
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
A Vehicle-Specific Power Approach to Speed- and Facility-Specific Emissions Estimates for Diesel Transit Buses
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 42(21), 7985–7991.
Contributors: H. Zhai n
MeSH headings : Air Pollutants / analysis; Calibration; Carbon Dioxide / analysis; Confidence Intervals; Gasoline / analysis; Geographic Information Systems; Health Planning Guidelines; Models, Chemical; Motor Vehicles; Reproducibility of Results; Statistics, Nonparametric; Transportation / methods; Vehicle Emissions / analysis
TL;DR:
This study estimates roadway link average emission rates for diesel-fueled transit buses based on link mean speeds, using newly defined VSP modes from data gathered by a portable emissions monitoring system.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Analysis of coupled model uncertainties in source-to-dose modeling of human exposures to ambient air pollution: A PM2.5 case study
ATMOSPHERIC ENVIRONMENT, 43(9), 1641–1649.
Contributors: H. Özkaynak*, H. Frey n, J. Burke * & R. Pinder *
author keywords: Air quality model; Exposure model; Particulate matter; Variability; Uncertainty
TL;DR:
This work characterize variability and uncertainty associated with each of the individual concentration, exposure and dose models that are linked, and uses a conceptual framework to quantify and evaluate the implications of coupled model uncertainties.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Assessing methods for comparing emissions from gasoline and diesel light-duty vehicles based on microscale measurements
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 14(2), 91–99.
Contributors: M. Coelho *
author keywords: Diesel vehicles; Emissions; On-board measurements; Vehicle specific power
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Characterization of Real-World Activity, Fuel Use, and Emissions for Selected Motor Graders Fueled with Petroleum Diesel and B20 Biodiesel
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 58(10), 1274–1287.
Contributors: H. Frey
TL;DR:
An empirical modal-based model of vehicle fuel use and emissions was developed, based on stratifying the data with respect to ranges of normalized MAP, to enable comparisons between duty cycles, motor graders, and fuels.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 article
Characterizing variability and uncertainty in exposure assessments improves links to environmental decision-making
EM: Air and Waste Management Association's Magazine for Environmental Managers, pp. 18–22. http://www.scopus.com/inward/record.url?eid=2-s2.0-47749136225&partnerID=MN8TOARS
Contributors: H. Özkaynak, H. Frey & B. Hubbell
Source: ORCID
Added: April 26, 2019
2008 journal article
Comparison of Real-World Emissions of B20 Biodiesel Versus Petroleum Diesel for Selected Nonroad Vehicles and Engine Tiers
TRANSPORTATION RESEARCH RECORD, (2058), 33–42.
Contributors: H. Frey n
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Comparison of fuel consumption and tailpipe emissions of ethanol 85 and gasoline for flexible fuel vehicles
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3262–3276. http://www.scopus.com/inward/record.url?eid=2-s2.0-70449498143&partnerID=MN8TOARS
Contributors: H. Zhai
Source: ORCID
Added: April 26, 2019
2008 conference paper
Estimating light duty gasoline vehicle emission factors at high transient and constant speeds for short road segments to support near-roadway air quality studies
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3137–3148. http://www.scopus.com/inward/record.url?eid=2-s2.0-70449500370&partnerID=MN8TOARS
Contributors: H. Frey & H. Choi
Source: ORCID
Added: April 26, 2019
2008 journal article
Fuel use and emissions comparisons for alternative routes, time of day, road grade, and vehicles based on in-use measurements
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 42(7), 2483–2489.
Contributors: H. Frey n
MeSH headings : Gasoline; Motor Vehicles
TL;DR:
The results demonstrate that alternative routing can significantly impact trip emissions and vehicle-specific models are needed to capture episodic effects of emissions for near-road short-term human exposure assessment.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 conference paper
Impact of Alternative Vehicle Technologies on Measured Vehicle Emissions
Transportation Land Use, Planning, and Air Quality, 320.
Contributors: H. Zhai n
Event: Transportation Land Use, Planning, and Air Quality Congress 2007
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: April 26, 2019
2008 conference paper
Impact of alternative vehicle technologies on measured vehicle emissions
Transportation Land Use, Planning, and Air Quality - Proceedings of the 2007 Transportation Land Use, Planning, and Air Quality Conference, 320, 408–414. http://www.scopus.com/inward/record.url?eid=2-s2.0-57549103716&partnerID=MN8TOARS
Contributors: H. Zhai, H. Frey, N. Rouphail, G. Gonçalves & T. Farias
Source: ORCID
Added: February 10, 2024
2008 journal article
Link-based emission factors for heavy-duty diesel trucks based on real-world data
Transportation Research Record, (2058), 23–32.
Contributors: H. Frey n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: ORCID, NC State University Libraries, NC State University Libraries
Added: August 6, 2018
2008 journal article
Measurement and modeling of fuel use and exhaust emissions from idling Long-haul freight truck and auxiliary power unit engines
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3060–3064. http://www.scopus.com/inward/record.url?eid=2-s2.0-70449497001&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2008 journal article
Methodology for characterization of long-haul truck idling activity under real-world conditions
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 13(8), 516–523.
Contributors: H. Christopher Frey n
author keywords: Truck; Engine; Idle; Emissions; Diesel; Activity
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 report
Real-world duty cycles and utilization for construction equipment in North Carolina
In Technical Report- Not held in TRLN member libraries. Raleigh, N.C.: North Carolina Department of Transportation.
Source: NC State University Libraries
Added: August 6, 2018
2008 journal article
Real-world in-use activity, fuel use, and emissions for nonroad construction vehicles: A case study for excavators
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 58(8), 1033–1046.
Contributors: S. Abolhasani n
MeSH headings : Air Pollutants, Occupational / analysis; Environmental Monitoring; Fossil Fuels / analysis; Industry; Models, Statistical; Montana; Off-Road Motor Vehicles; Quality Control; Transportation; Vehicle Emissions / analysis
TL;DR:
The importance of accounting for intercycle variability in real-world in-use emissions to develop more accurate emission inventories is demonstrated by the development and demonstrated for deployment of a portable emission measurement system for excavators.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2008 journal article
Vehicle-specific emissions modeling for non-road construction vehicles based upon real-world measurements
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 2743–2749. http://www.scopus.com/inward/record.url?eid=2-s2.0-70449336768&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2008 journal article
What is uncertainty analysis and how can it be performed?
Toxicology Letters, 180, 3.
Source: ORCID
Added: April 26, 2019
2007 journal article
Comparing real-world fuel consumption for diesel- and hydrogen-fueled transit buses and implication for emissions
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 12(4), 281–291.
Contributors: H. Frey n
author keywords: fuel consumption; diesel buses; hydrogen fuel cells; vehicle specific power
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Evaluation of response time of a portable system for in-use vehicle tailpipe emissions measurement
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 42(1), 221–227.
Contributors: K. Zhang n
MeSH headings : Air Pollutants / analysis; Carbon Dioxide / analysis; Carbon Monoxide / analysis; Environmental Monitoring / instrumentation; Environmental Monitoring / methods; Hydrocarbons / analysis; Motor Vehicles; Nitric Oxide / analysis; Time Factors; Vehicle Emissions / analysis
TL;DR:
Simulations showed that correction improves the measurement accuracy, especially when the noise is relatively large, and for real-world data, smoothing and correction is recommended for major peaks to improve the measurements accuracy.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2007 journal article
Fuel consumption and emissions comparisons between ethanol 85 and gasoline fuels for flexible fuel vehicles
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3104–3108. http://www.scopus.com/inward/record.url?eid=2-s2.0-44649111256&partnerID=MN8TOARS
Contributors: H. Zhai
Source: ORCID
Added: April 26, 2019
2007 report
Life cycle inventory and impact analysis framework for nonroad construction vehicles and equipment based upon in-use measurements
In Technical Report- Not held in TRLN member libraries. Raleigh, N.C.: National Science Foundation.
Source: NC State University Libraries
Added: August 6, 2018
2007 conference paper
Methodology for activity, fuel use, and emissions data collection and analysis for nonroad construction equipment
Proceedings of the Air and Waste Management Association Annual Conference. Pittsburgh, PA: AWMA.
Source: NC State University Libraries
Added: August 6, 2018
2007 journal article
Methodology for activity, fuel use, and emissions data collection and analysis for nonroad construction equipment
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3124–3128. http://www.scopus.com/inward/record.url?eid=2-s2.0-44649103903&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2007 conference paper
Methods for measurement and analysis of in-use emissions of nonroad construction equipment
Proceedings of the EPA Emissions Inventory Conference. Raleigh, NC: EPA.
Source: NC State University Libraries
Added: August 6, 2018
2007 journal article
Potential best practices for reducing greenhouse gas (GHG) emissions in freight transportation
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 5, 3099–3103. http://www.scopus.com/inward/record.url?eid=2-s2.0-44649095696&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
2007 journal article
Second-order modeling of variability and uncertainty in microbial hazard characterization
JOURNAL OF FOOD PROTECTION, 70(2), 363–372.
Contributors: A. Vicari n
MeSH headings : Adolescent; Adult; Animals; Campylobacter jejuni / pathogenicity; Child; Child, Preschool; Colony Count, Microbial; Consumer Product Safety; Female; Food Contamination / analysis; Food Contamination / statistics & numerical data; Food Microbiology; Humans; Infant; Logistic Models; Male; Middle Aged; Models, Biological; Monte Carlo Method; Predictive Value of Tests; Risk Assessment
TL;DR:
An analytical framework that permits quantitative consideration of variability and uncertainty in microbial hazard characterization is described and it is indicated that uncertainty associated with dose-response modeling has a dominating influence on the analytical outcome.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2007 journal article
Simplified performance model of gas turbine combined cycle systems
Journal of Energy Engineering, 133(2), 82–90.
Contributors: Y. Zhu n
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
13. Climate Action
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2007 conference paper
Spatial and temporal analysis of real-world empirical fuel use and emissions
100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007, 3, 2097–2102. http://www.scopus.com/inward/record.url?eid=2-s2.0-44649198655&partnerID=MN8TOARS
Contributors: H. Frey & K. Zhang
Source: ORCID
Added: April 26, 2019
2006 review
Air emission inventories in North America: A critical assessment
[Review of ]. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 56(8), 1115–1129.
Contributors: C. Miller *, G. Hidy, J. Hales, C. Kolb *, A. Werner, B. Haneke, D. Parrish *, H. Frey n
MeSH headings : Air Pollutants, Occupational / analysis; Air Pollution / analysis; Algorithms; Environmental Monitoring / standards; Environmental Monitoring / statistics & numerical data; Equipment and Supplies; North America
TL;DR:
Approaches to improving quantitative measures of inventory uncertainty allow air quality management decisions to take into account the uncertainties associated with emissions estimates, providing more accurate projections of how well alternative strategies may work.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Application of classification and regression trees for sensitivity analysis of the Escherichia coli O157 : H7 food safety process risk model
JOURNAL OF FOOD PROTECTION, 69(3), 609–618.
Contributors: A. Mokhtari n
MeSH headings : Consumer Product Safety; Escherichia coli O157 / growth & development; Food Handling / methods; Food Microbiology; Food-Processing Industry / standards; Humans; Models, Biological; Regression Analysis; Risk Assessment / methods; Risk Assessment / standards; Sensitivity and Specificity; Temperature; Time Factors
TL;DR:
The capabilities of classification and regression trees analysis are demonstrated as an alternative to other statistically based sensitivity analysis methods, and one that can readily address specific characteristics that are common in microbial food safety process risk models.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2006 conference paper
Emissions comparison between dirt roads and paved roads using portable emissions measurement systems
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 6, 3421–3439. http://www.scopus.com/inward/record.url?eid=2-s2.0-33847791632&partnerID=MN8TOARS
Contributors: J. Zietsman, D. Perkinson, H. Frey & K. Wieters
Source: ORCID
Added: April 26, 2019
2006 journal article
Evaluation and recommendation of sensitivity analysis methods for application to Stochastic Human Exposure and Dose Simulation models
JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY, 16(6), 491–506.
Contributors: A. Mokhtari n
author keywords: SHEDS models; sensitivity analysis; variance-based methods; sampling-based methods; risk assessment
MeSH headings : Analysis of Variance; Environmental Exposure / analysis; Environmental Pollutants / analysis; Fourier Analysis; Humans; Models, Theoretical; Pesticides / analysis; Risk Assessment; Sampling Studies; Sensitivity and Specificity; Statistics, Nonparametric; Stochastic Processes; United States; United States Environmental Protection Agency / standards
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Evaluation of numerical models for simulation of real-world hot-stabilized fuel consumption and emissions of gasoline light-duty vehicles
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT, 11(5), 377–385.
Contributors: C. Silva
author keywords: instantaneous fuel consumption and emissions models; road gasoline vehicles; on-board measurements; traffic induced driving cycles
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Evaluation of sampling-based methods for sensitivity analysis: Case study for the E-Coli food safety process risk model
HUMAN AND ECOLOGICAL RISK ASSESSMENT, 12(6), 1128–1152.
Contributors: A. Mokhtari n
author keywords: sensitivity analysis; microbial food safety process risk models; two-dimensional probabilistic framework; variability; uncertainty
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Improved system integration for integrated gasification combined cycle (IGCC) systems
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 40(5), 1693–1699.
Contributors: H. Frey n
MeSH headings : Gases / chemistry; Nitrogen; Systems Integration; Water
TL;DR:
A process simulation model was developed for IGCC systems with alternative types of ASU and gas turbine integration and the optimal nitrogen injection only case had the highest efficiency and power output and approximately the lowest emissions per unit output of all cases considered, and thus is a recommended design option.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2006 journal article
Real-world data collection procedure for non-road construction equipment: Problems, solutions, and data quality assurance
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3, 1935–1939. http://www.scopus.com/inward/record.url?eid=2-s2.0-33847776263&partnerID=MN8TOARS
Contributors: K. Kim
Source: ORCID
Added: April 26, 2019
2006 journal article
Road grade estimation for on-road vehicle emissions modeling using light detection and ranging data
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 56(6), 777–788.
Contributors: K. Zhang n
MeSH headings : Air Pollutants / analysis; Carbon Dioxide / analysis; Carbon Monoxide / analysis; Environmental Monitoring; Gasoline; Hydrocarbons / analysis; Motor Vehicles; Nitric Oxide / analysis; Vehicle Emissions / analysis
TL;DR:
LIDAR data are shown to be reliable and accurate for road grade estimation for vehicle emissions modeling and demonstrated via a case study using PEMS data collected in the Research Triangle Park, NC, area.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2006 conference paper
Speed- And facility-specific emission estimates for on-road light-duty vehicles on the basis of real-world speed profiles
Transportation Research Record, (1987), 128–137. http://www.scopus.com/inward/record.url?eid=2-s2.0-33947608832&partnerID=MN8TOARS
Contributors: H. Christopher Frey, N. Rouphail & H. Zhai
Source: ORCID
Added: February 10, 2024
2006 journal article
Uncertainty analysis of integrated gasification combined cycle systems based on frame 7H versus 7F gas turbines
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 56(12), 1649–1661.
Contributors: Y. Zhu *
MeSH headings : Coal; Conservation of Natural Resources; Costs and Cost Analysis; Electric Power Supplies; Energy-Generating Resources; Equipment Design; Forecasting; Fossil Fuels; Power Plants; Research; Risk; Thermodynamics; Uncertainty
TL;DR:
The objective of this study was to evaluate the risks and potential payoffs of IGCC technology based on different gas turbine combined cycle designs and found the IGCC-7H system is robustly preferred to the IG CC-7F system.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2006 journal article
Uncertainty for data with non-detects: Air toxic emissions from combustion
HUMAN AND ECOLOGICAL RISK ASSESSMENT, 12(6), 1171–1191.
Contributors: Y. Zhao n
author keywords: urban air toxics; emission factor; censored datasets; maximum likelihood estimation; bootstrap simulation
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2005 conference paper
In-use emissions of heavy duty diesel dump trucks on petroleum diesel and B20 biodiesel fuels
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2005. http://www.scopus.com/inward/record.url?eid=2-s2.0-33646469610&partnerID=MN8TOARS
Contributors: H. Frey & K. Kim
Source: ORCID
Added: April 26, 2019
2005 journal article
Quantitative analysis of variability and uncertainty with known measurement error: Methodology and case study
RISK ANALYSIS, 25(3), 663–675.
Contributors: J. Zheng n
author keywords: bootstrap pair; error-free data; measurement error; observed data; uncertainty; variability
TL;DR:
A methodology for improving the characterization of variability and uncertainty with known measurement errors in data is demonstrated based on an observed data set, known measurement error, and a measurement-error model and a key finding is that total uncertainty in mean can be properly quantified even if measurement and random sampling errors cannot be separated.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2005 journal article
Recommended practice regarding selection of sensitivity analysis methods applied to microbial food safety process risk models
HUMAN AND ECOLOGICAL RISK ASSESSMENT, 11(3), 591–605.
Contributors: A. Mokhtari n
author keywords: sensitivity analysis; microbial food safety process risk model; variability; uncertainty
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2005 conference paper
Road grade estimation for on-road vehicle emissions modeling using lidar data
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 2005. http://www.scopus.com/inward/record.url?eid=2-s2.0-33646469896&partnerID=MN8TOARS
Source: ORCID
Added: April 26, 2019
2005 journal article
Sensitivity analysis of a two-dimensional probabilistic risk assessment model using analysis of variance
RISK ANALYSIS, 25(6), 1511–1529.
Contributors: A. Mokhtari n
author keywords: microbial food safety process risk models; sensitivity analysis; two-dimensional probabilistic framework; uncertainty; variability
MeSH headings : Analysis of Variance; Animals; Cattle; Escherichia coli O157 / isolation & purification; Escherichia coli O157 / pathogenicity; Food Microbiology; Meat / microbiology; Models, Statistical; Risk Assessment / statistics & numerical data; Risk Management; Safety; Sensitivity and Specificity
TL;DR:
This article demonstrates application of sensitivity analysis to risk assessment models with two-dimensional probabilistic frameworks that distinguish between variability and uncertainty by identifying inputs related to the storage of ground beef servings at home as the most important.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 conference paper
A Monte Carlo study of the uncertainties in predictions by ISC3ST and AERMOD of annual average benzene and 1,3-butadiene concentrations around the Houston Ship Channel
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3145–3157. http://www.scopus.com/inward/record.url?eid=2-s2.0-21944432040&partnerID=MN8TOARS
Contributors: S. Hanna, D. Heinold, R. Paine, H. Frey, D. Baker, R. Karp, H. Feldman
Source: ORCID
Added: April 26, 2019
2004 conference paper
Assessment of uncertainty in benzene concentration estimates in the Houston, TX, area
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 3129–3143. http://www.scopus.com/inward/record.url?eid=2-s2.0-21944435254&partnerID=MN8TOARS
Contributors: A. Hanna, J. Vukovich, S. Arunachalam, D. Loughlin, H. Frey & V. Isakov
Source: ORCID
Added: April 26, 2019
2004 journal article
Comparison of sensitivity analysis methods based on applications to a food safety risk assessment model
RISK ANALYSIS, 24(3), 573–585.
Contributors: S. Patil n
author keywords: complex models; critical control points; food safety; risk assessment; sensitivity analysis
MeSH headings : Analysis of Variance; Animals; Food Contamination / prevention & control; Food Microbiology; Foodborne Diseases / prevention & control; Humans; Models, Statistical; Ostreidae / microbiology; Refrigeration; Risk Assessment; Safety; Sensitivity and Specificity; Time Factors; Vibrio parahaemolyticus / isolation & purification; Vibrio parahaemolyticus / pathogenicity
TL;DR:
Ten sensitivity analysis methods were applied to a draft Vibrio parahaemolyticus risk assessment model developed by the Food and Drug Administration, and rankings of key inputs from different methods were compared.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Development of probabilistic emission inventories of air toxics for Jacksonville, Florida
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 54(11), 1405–1421.
MeSH headings : Air Pollutants / analysis; Cities; Florida; Forecasting; Models, Statistical; Risk Assessment
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 conference paper
Development of probabilistic emission inventory of air toxics for Jacksonville, Florida
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA. http://www.scopus.com/inward/record.url?eid=2-s2.0-21944442584&partnerID=MN8TOARS
Contributors: Y. Zhao & H. Frey
Source: ORCID
Added: April 26, 2019
2004 conference paper
Development of probabilistic emission inventory of air toxics for jacksonville, Florida
Proceedings of the Air and Waste Management Association's Annual Meeting and Exhibition, 3101–3114. http://www.scopus.com/inward/record.url?eid=2-s2.0-18944389363&partnerID=MN8TOARS
Contributors: Y. Zhao & H. Christopher Frey
Source: ORCID
Added: February 10, 2024
2004 journal article
Optimization under variability and uncertainty: A case study for NOx emissions control for a gasification system
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 38(24), 6741–6747.
MeSH headings : Air Pollution / economics; Air Pollution / prevention & control; Cost Savings; Cost-Benefit Analysis; Forecasting; Models, Theoretical; Nitrogen Oxides / analysis; Reproducibility of Results
TL;DR:
Methods for optimization of process technologies considering the distinction between variability and uncertainty are developed and applied to case studies of NOx control for Integrated Gasification Combined Cycle systems and a coupled stochastic optimization and programming method and a two-dimensional Stochastic programming method are demonstrated via a case study.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Propagation of uncertainty in hourly utility NOx emissions through a photochemical grid air quality model: A case study for the Charlotte, NC, modeling domain
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 38(7), 2153–2160.
Contributors: A. Abdel-Aziz n & H. Frey n
MeSH headings : Air Pollutants / analysis; Environmental Monitoring; Forecasting; Models, Theoretical; Nitrogen Oxides / analysis; North Carolina; Oxidants, Photochemical / analysis; Ozone / analysis; Power Plants; Reproducibility of Results
TL;DR:
A probabilistic hourly NOx emission inventory for 32 units of nine coal-fired power plants in the Charlotte domain for the year 1995 was propagated through the Multiscale Air Quality Simulation Platform (MAQSIP).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Quantification of highway vehicle emissions hot spots based upon on-board measurements
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 54(2), 130–140.
Contributors: A. Unal n
MeSH headings : Air Pollutants / analysis; Data Collection; Environmental Monitoring / methods; Models, Theoretical; Vehicle Emissions / analysis
TL;DR:
Average speed, average acceleration, standard deviation of speed, percent of time spent in cruise mode, minimum speed, maximum acceleration, and maximum power have statistically significant associations with vehicle emissions and influence emissions hot spots.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2004 journal article
Quantification of variability and uncertainty for air toxic emission inventories with censored emission factor data
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 38(22), 6094–6100.
Contributors: H. Frey n
MeSH headings : Air Pollutants / analysis; Cities; Forecasting; Likelihood Functions; Maximum Allowable Concentration; Models, Statistical; Risk Assessment; Texas
TL;DR:
Probabilistic emission inventories were developed for urban air toxic emissions of benzene, formaldehyde, chromium, and arsenic for the example of Houston and uncertainty was dominated by only a few source categories.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science; OpenAlex)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Quantification of variability and uncertainty for censored data sets and application to air toxic emission factors
RISK ANALYSIS, 24(4), 1019–1034.
Contributors: Y. Zhao n
author keywords: Bootstrap simulation; censored data sets; Kaplan-Meier estimator; maximum likelihood estimation; Monte Carlo simulation; nondetects; urban air toxics
MeSH headings : Air; Air Pollution; Confidence Intervals; Likelihood Functions; Models, Statistical; Monte Carlo Method; Risk Assessment; Statistics as Topic; Statistics, Nonparametric; Uncertainty
TL;DR:
The bootstrap/MLE method is illustrated via an application to an empirical air toxic emission factor data set and the robustness of the method was tested by application to different degrees of censoring, sample sizes, coefficients of variation, and numbers of detection limits.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
12. Responsible Consumption and Production
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2004 journal article
Quantification of variability and uncertainty using mixture distributions: Evaluation of sample size, mixing weights, and separation between components
RISK ANALYSIS, 24(3), 553–571.
Contributors: J. Zheng n
author keywords: bootstrap simulation; mixture distributions; parameter estimation; uncertainty; variability
TL;DR:
To evaluate the robustness of using mixture distribution as a basis for estimating both variability and uncertainty, 108 synthetic data sets generated from selected population mixture log-normal distributions were investigated, and properties of variability and uncertainties estimates were evaluated with respect to variation in sample size, mixing weight, and separation between components of mixtures.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2003 journal article
Development of hourly probabilistic utility NOx emission inventories using time series techniques: Part I - univariate approach
ATMOSPHERIC ENVIRONMENT, 37(38), 5379–5389.
Contributors: A. Abdel-Aziz n & H. Frey
author keywords: autocorrelation; uncertainty; variability; emissions; nitrogen oxides
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2003 journal article
Development of hourly probabilistic utility NOx emission inventories using time series techniques: Part II - multivariate approach
ATMOSPHERIC ENVIRONMENT, 37(38), 5391–5401.
Contributors: A. Abdel-Aziz n & H. Frey
author keywords: autocorrelation; uncertainty; variability; emissions; nitrogen oxides
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2003 chapter
Effect of arterial signalization and level of service on measured vehicle emissions
In Energy, air quality, and fuels 2003 (pp. 47–56). Washington, DC: Transportation Research Board.
Source: NC State University Libraries
Added: August 6, 2018
2003 journal article
Effect of arterial signalization and level of service on measured vehicle emissions
Transportation Research Record, (1842), 47–56. http://www.scopus.com/inward/record.url?eid=2-s2.0-1542316140&partnerID=MN8TOARS
Contributors: A. Unal
Source: ORCID
Added: April 26, 2019
2003 journal article
Integrated environmental assessment, Part I: Estimating emissions
Journal of Industrial Ecology, 7(1), 9–11.
Contributors: H. Christopher Frey n & M. Small *
Source: ORCID
Added: February 10, 2024
2003 journal article
Methods for quantifying variability and uncertainty in AP-42 emission factors: Case studies for natural gas-fueled engines
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 53(12), 1436–1447.
Contributors: H. Frey n
MeSH headings : Air Pollutants / analysis; Fossil Fuels; Models, Theoretical; Motor Vehicles; Reproducibility of Results; Vehicle Emissions / analysis
TL;DR:
Quantitative methods for characterizing variability and uncertainty were applied to case studies of oxides of nitrogen and total organic carbon emission factors for lean-burn natural gas-fueled internal combustion engines, and parametric probability distributions were fit to represent inter-engine variability in specific emission factors.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2003 journal article
On-road measurement of vehicle tailpipe emissions using a portable instrument
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 53(8), 992–1002.
Contributors: H. Frey n
MeSH headings : Air Pollutants / analysis; Automobiles; Environmental Monitoring / instrumentation; Public Policy; Reproducibility of Results; Sensitivity and Specificity; Transportation; Vehicle Emissions / analysis
TL;DR:
Onboard data demonstrate the importance of accounting for the episodic nature of real-world emissions to help develop appropriate traffic and air quality management strategies.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2003 journal article
Probabilistic nonroad mobile source emission factors
Journal of Environmental Engineering, 129(2), 162–168.
Contributors: H. Frey n
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2003 journal article
Quantification of hourly variability in NOx emissions for baseload coal-fired power plants
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 53(11), 1401–1411.
Contributors: A. Abdel-Aziz n & H. Frey n
MeSH headings : Air Pollutants / analysis; Coal; Decision Making; Environmental Monitoring / methods; Forecasting; Kinetics; Models, Theoretical; Nitrogen Oxides / analysis; Power Plants
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2002 conference paper
Identification and review of sensitivity analysis methods
Risk Analysis, 22(3), 553–578.
TL;DR:
Identification and qualitative comparison of sensitivity analysis methods that have been used across various disciplines, and that merit consideration for application to food-safety risk assessment models, are presented.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(OpenAlex)
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018
2002 journal article
Introduction to special section on sensitivity analysis and summary of NCSU/USDA workshop on sensitivity analysis
RISK ANALYSIS, 22(3), 539–545.
Contributors: H. Frey n
author keywords: sensitivity analysis; food safety uncertainty; variability modeling
MeSH headings : Food Contamination / statistics & numerical data; Risk Assessment; Safety; Sensitivity and Specificity; United States; United States Department of Agriculture
TL;DR:
The workshop produced agreement regarding key criteria for sensitivity analysis methods and the need to use two or more methods to try to obtain robust insights and recommendations were made regarding a guideline document to assist practitioners in selecting, applying, interpreting, and reporting the results of sensitivity analysis.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2002 journal article
Probabilistic analysis of driving cycle-based highway vehicle emission factors
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 36(23), 5184–5191.
Contributors: H. Frey n
MeSH headings : Air Pollutants / analysis; Atmospheric Pressure; Automobile Driving; Carbon Monoxide / analysis; Forecasting; Hydrocarbons / analysis; Models, Statistical; Nitrogen Oxides / analysis; Regression Analysis; Temperature; Vehicle Emissions / analysis
TL;DR:
A probabilistic methodology for quantifying intervehicle variability and fleet average uncertainty in highway vehicle emission factors is developed and demonstrated for tailpipe carbon monoxide, hydrocarbon, and nitrogen oxides emissions for a selected light-duty gasoline vehicle technology.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2002 journal article
Quantification of variability and uncertainty in air pollutant emission inventories: Method and case study for utility NOx emissions
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 52(9), 1083–1095.
MeSH headings : Air Pollutants / analysis; Cost Savings; Environment; Environmental Monitoring / economics; Environmental Monitoring / standards; Nitrogen Oxides / analysis; Policy Making; Reproducibility of Results; Sensitivity and Specificity; Vehicle Emissions / analysis
TL;DR:
A general methodology for the quantification of variability and uncertainty in emission factors, activity factors, and emission inventories (EIs) is described, featuring the use of bootstrap simulation and related techniques.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2002 journal article
Quantification of variability and uncertainty in lawn and garden equipment NOx and total hydrocarbon emission factors
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 52(4), 435–448.
MeSH headings : Air Pollutants, Occupational / analysis; Air Pollution / analysis; Air Pollution / prevention & control; Databases, Factual; Hydrocarbons / analysis; Nitrogen Oxides / analysis; Reproducibility of Results; Vehicle Emissions / analysis
TL;DR:
Quantitative methods for characterizing both variability and uncertainty are demonstrated and applied to case studies of emission factors for lawn and garden equipment engines and serve as a basis for calculation of uncertainty in emission inventories (Els).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
2001 journal article
Uncertainties in predicted ozone concentrations due to input uncertainties for the UAM-V photochemical grid model applied to the July 1995 OTAG domain
ATMOSPHERIC ENVIRONMENT, 35(5), 891–903.
Contributors: S. Hanna *
author keywords: photochemical modeling; model uncertainty; Monte Carlo uncertainty methods
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018
1999 journal article
Methods for characterizing variability and uncertainty: Comparison of bootstrap simulation and likelihood-based approaches
Risk Analysis, 19(1), 109–130.
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018
1999 journal article
Methods for characterizing variability and uncertainty: Comparison of bootstrap simulation and likelihood-based approaches
Risk Analysis, 19(1), 109–130.
Contributors: H. Frey & D. Burmaster
author keywords: variability; uncertainty; maximum likelihood; bootstrap simulation; Monte Carlo simulation
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
13. Climate Action
(Web of Science)
Source: ORCID
Added: April 26, 2019
1998 journal article
Characterization and simulation of uncertain frequency distributions: Effects of distribution choice, variability, uncertainty, and parameter dependence
HUMAN AND ECOLOGICAL RISK ASSESSMENT, 4(2), 423–468.
author keywords: variability; uncertainty; bootstrap; Monte Carlo; distributions
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
11. Sustainable Cities and Communities
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
1998 conference paper
Desktop modeling of the performance, emissions, and cost of gasification systems
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition, 91(1998 June). http://www.scopus.com/inward/record.url?eid=2-s2.0-0032274276&partnerID=MN8TOARS
Contributors: H. Frey & R. Bharvirkar
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1998 conference paper
Methods for quantitative analysis of variability and uncertainty in hazardous air pollutant emissions
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition, 91(1998 June). http://www.scopus.com/inward/record.url?eid=2-s2.0-18344405017&partnerID=MN8TOARS
Contributors: H. Frey
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1998 chapter
Quantitative analysis of variability and uncertainty in energy and environmental systems
In Uncertainty modeling and analysis in civil engineering (pp. 381–423). Boca Raton: CRC Press.
Source: NC State University Libraries
Added: August 6, 2018
1997 conference paper
Bootstrap methods for quantitative analysis of variability and uncertainty in exposure and risk assessment
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-0031344095&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1997 journal article
Integrated environmental control modeling of coal-fired power systems
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 47(11), 1180–1188.
Contributors: E. Rubin *
UN Sustainable Development Goal Categories
13. Climate Action
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1997 conference paper
Methods for characterizing and managing technological risks in advanced power generation systems: Application to gasification repowering in Poland
Proceedings of Gasification Technologies Conference, Electric Power Research lnstitute, Palo Alto, CA. October 1997, (1997 Oct.).
Source: NC State University Libraries
Added: August 6, 2018
1997 journal article
Modeling and evaluation of externally fired combined cycle using ASPEN
Journal of Energy Engineering, 123(3), 69–87.
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018
1997 journal article
Modeling and evaluation of externally fired combined cycle using ASPEN
Journal of Energy Engineering, 123(3), 69–86. http://www.scopus.com/inward/record.url?eid=2-s2.0-6144248166&partnerID=MN8TOARS
Contributors: P. Agrawal
Source: ORCID
Added: April 26, 2019
1997 article
Optimal design of advanced power systems under uncertainty
ENERGY CONVERSION AND MANAGEMENT, Vol. 38, pp. 1725–1735.
author keywords: process optimization; process synthesis; uncertainty; energy systems; environmental control technology
TL;DR:
Recent developments in on-going research to develop and demonstrate advanced computer-based methods for dealing with uncertainties that are critical to the design of advanced coal-based power systems are described.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
1997 journal article
Optimal design of advanced power systems under uncertainty
Energy Conversion and Management, 38(15-17), 1725–1735. http://www.scopus.com/inward/record.url?eid=2-s2.0-0031259174&partnerID=MN8TOARS
Contributors: U. Diwekar
Source: ORCID
Added: April 26, 2019
1997 book
Probabilistic evaluation of mobile source air pollution. Volume I, Probabilistic modeling of exhaust emissions from light duty gasoline vehicles
Raleigh, NC: North Carolina State University for Center for Transportation and the Environment.
Source: NC State University Libraries
Added: August 6, 2018
1997 conference paper
Probabilistic methodology for risk assessment of new energy technologies and application to gasification repowering for an oil refinery in Poland
In G. Manfrida & N. Lior (Eds.), Florence World Energy Research Symposium (1997): FLOWERS ''97: Florence World Energy Symposium (Vol. 39, pp. 267–274). Padova, Italy: SGEditorial.
Ed(s): . G. Manfrida & N. Lior
Source: NC State University Libraries
Added: August 6, 2018
1997 conference paper
Quantification of uncertainty in remotesensing-based school bus CO and hydrocarbon emission factors
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-0031354445&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1997 conference paper
Quantification of variability and uncertainty in AP-42 emission factors using bootstrap simulation
Emission inventory: Planning for the future, proceedings of a specialty conference, October 28-30, 1997, Research Triangle Park, NC, (1997 Oct.). Pittsburgh, Pa.: Air & Waste Management Association.
Source: NC State University Libraries
Added: August 6, 2018
1997 chapter
Uncertainty evaluation in capital cost projection
In Encyclopedia of chemical processing and design, Vol. 59 (Vol. 59, pp. 480–494). New York: Marcel Dekker.
Source: NC State University Libraries
Added: August 6, 2018
1997 conference paper
Variability and uncertainty in highway vehicle emission factors
Emission inventory: Planning for the future, proceedings of a specialty conference, October 28-30, 1997, Research Triangle Park, NC, (1997 Oct.). Pittsburgh, Pa.: Air & Waste Management Association.
Source: NC State University Libraries
Added: August 6, 2018
1996 journal article
Characterizing, simulating, and analyzing variability and uncertainty: An illustration of methods using an air toxics emissions example
Human and Ecological Risk Assessment (HERA), 2(4), 762–797. http://www.scopus.com/inward/record.url?eid=2-s2.0-21444446390&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1996 conference paper
Comparison of classroom and video-based instruction: a case study for a graduate-level air pollution control course
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030313917&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: February 10, 2024
1996 conference paper
Methods for evaluating the costs of utility NOx control technologies
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030315356&partnerID=MN8TOARS
Contributors: L. Tran & H. Frey
Source: ORCID
Added: April 26, 2019
1996 conference paper
Optimization of environmental control system design for an IGCC power plant
Proceedings of the American Power Conference, 1, 58–63. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029706671&partnerID=MN8TOARS
Contributors: U. Diwekar, E. Rubin & H. Frey
Source: ORCID
Added: April 26, 2019
1996 conference paper
Probabilistic analysis and optimization of new power generation technologies: a case study for the externally-fired combined cycle
Proceedings of the American Power Conference, 1, 52–57. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029707721&partnerID=MN8TOARS
Contributors: H. Frey & P. Agarwal
Source: ORCID
Added: April 26, 2019
1996 conference paper
Probabilistic modeling and optimization of clean coal technologies: case studies of the externally-fired combined cycle
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030314477&partnerID=MN8TOARS
Contributors: H. Frey & P. Agarwal
Source: ORCID
Added: April 26, 2019
1996 conference paper
Uncertainty, bias, and variability in emission factors for light duty gasoline vehicles
Proceedings of the Air & Waste Management Association's Annual Meeting & Exhibition. http://www.scopus.com/inward/record.url?eid=2-s2.0-17544390686&partnerID=MN8TOARS
Contributors: H. Frey, M. Kini, S. Ranjithan & S. Fu
Source: ORCID
Added: April 26, 2019
1995 journal article
Coal blending optimization under uncertainty
European Journal of Operational Research, 83(3), 452–465. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029328154&partnerID=MN8TOARS
Contributors: J. Shih
Source: ORCID
Added: April 26, 2019
1995 conference paper
Engineering-economic evaluation of SCR NO<sub>x</sub> control systems for coal-fired power plants
Proceedings of the American Power Conference, 57-2, 1583–1588. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029232725&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1994 journal article
Modeling uncertainties in advanced technologies: Application to a coal gasification system with hot-gas cleanup
Energy, 19(4), 449–463. http://www.scopus.com/inward/record.url?eid=2-s2.0-0028413599&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1992 journal article
Evaluate uncertainties in advanced process technologies
Chemical Engineering Progress, 88(5), 63–70. http://www.scopus.com/inward/record.url?eid=2-s2.0-0026855415&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1992 journal article
Evaluation method for advanced acid rain compliance technology
Journal of Energy Engineering, 118(1), 38–55. http://www.scopus.com/inward/record.url?eid=2-s2.0-0026853964&partnerID=MN8TOARS
Contributors: H. Frey
Source: ORCID
Added: April 26, 2019
1992 journal article
Evaluation of Advanced Coal Gasification Combined-Cycle Systems under Uncertainty
Industrial and Engineering Chemistry Research, 31(5), 1299–1307.
Contributors: H. Frey & E. Rubin
Source: ORCID
Added: April 26, 2019
1992 journal article
Synthesizing Optimal Flowsheets: Applications to IGCC System Environmental Control
Industrial and Engineering Chemistry Research, 31(8), 1927–1936.
Contributors: U. Diwekar *, H. Frey * & E. Rubin *
TL;DR:
A new process synthesis capability implemented in the public version of the ASPEN chemical process simulator is demonstrated via an illustrative case study of a complex flowsheet to minimize the cost of an advanced integrated gasification combined-cycle plant design featuring hot-gas cleanup, subject to environmental constraints.
(via Semantic Scholar)
Source: ORCID
Added: April 26, 2019
1991 conference paper
Evaluating advanced technologies for acid rain compliance
Energy in the 90's, 172–178. http://www.scopus.com/inward/record.url?eid=2-s2.0-0025843790&partnerID=MN8TOARS
Contributors: H. Frey & E. Rubin
Source: ORCID
Added: April 26, 2019
1991 journal article
Probabilistic Evaluation of Advanced So<sub>2</sub>/No<sub>X</sub> Control Technology
Journal of the Air and Waste Management Association, 41(12), 1585–1593.
Contributors: H. Frey * & E. Rubin *
Source: ORCID
Added: April 26, 2019
1991 conference paper
Probabilistic modeling of the performance and economics of IGCC systems
American Society of Mechanical Engineers, Environmental Control Division Publication, EC, 2, 59–66. http://www.scopus.com/inward/record.url?eid=2-s2.0-0026400326&partnerID=MN8TOARS
Contributors: E. Rubin, H. Frey & U. Diwekar
Source: ORCID
Added: April 26, 2019
1988 journal article
Cost-Effective emission controls for coal-fired power plants
Chemical Engineering Communications, 74(1), 155–167.
Contributors: E. Rubin *, J. Salmento* & H. Frey *
Source: ORCID
Added: February 10, 2024
Employment
Updated: October 23rd, 2024 20:53
2024 - present
North Carolina State University Raleigh, US
Associate Dean for Research and Infrastructure
College of Engineering
2015 - present
NC State University Raleigh, NC, US
Futrell Distinguished University Professor
Civil, Construction, and Environmental Engineering
2022 - 2024
U.S. Environmental Protection Agency Washington, D.C., US
Assistant Administrator
Office of Research and Development
2021 - 2022
United States Environmental Protection Agency Washington, D.C., US
Deputy Assistant Administrator for Science Policy
Office of Research and Development
1994 - 2015
North Carolina State University Raleigh, US
Distinguished University Professor (2012-2015), Professor (2004-2012), Associate Professor (1999-2004), Assistant Professor (1994-1999)
Civil, Construction, and Environmental Engineering
Education
Updated: October 23rd, 2024 20:58
Carnegie Mellon University Pittsburgh, PA, US
PhD
Engineering and Public Policy
1985 - 1987
Carnegie Mellon University Pittsburgh, US
Master of Engineering
Mechanical Engineering
1981 - 1985
University of Virginia Charlottesville, US
BS
Mechanical Engineering
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