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2019
Williams, R. 2019 AWMA Sensor Training. 2019 AWMA Measurements Conference, Durham, NC, April 01, 2019.
Williams, R., R. Duvall, Vasu Kilaru, G. Hagler, L. Hassinger, K. Benedict, J. Rice, A. Kaufman, R. Judge, G. Pierce, G. Allen, M. Bergin, R. Cohen, P. Fransioli, M. Gerboles, R. Habre, M. Hannigan, D. Jack, P. Louie, N. Martin, M. Penza, A. Polidori, R. Subramanian, K. Ray, J. Schauer, E. Seto, G. Thurston, J. Turner, A. Wexler, AND Z. Ning. Deliberating performance targets workshop: Potential paths for emerging PM2.5 and O3 air sensor progress. Atmospheric Environment: X. Elsevier B.V., Amsterdam, Netherlands, 2:100031, (2019). https://doi.org/10.1016/j.aeaoa.2019.100031
Feinberg, S., R. Williams, G. Hagler, J. Low, L. Smith, R. Brown, D. Garver, M. Davis, M. Morton, J. Schaefer, AND J. Campbell. Examining spatiotemporal variability of urban particulate matter and application of high-time resolution data from a network of low-cost air pollution sensors. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 213:579-584, (2019). https://doi.org/10.1016/j.atmosenv.2019.06.026
Clements, A., S. Reece, T. Conner, AND R. Williams. Observed Data Quality Concerns Involving Low-Cost Air Sensors. Atmospheric Environment: X. Elsevier B.V., Amsterdam, Netherlands, 3:100034, (2019). https://doi.org/10.1016/j.aeaoa.2019.100034
Williams, R., S. Reece, A. Clements, AND T. Conner. Performance comparison of three low cost particulate matter sensors in an ambient environment. 2019 National Environmental Monitoring Conference (NEMC), FL, Jacksonville, August 05 - 09, 2019.
Wei, P., Z. Ning, D. Westerdahl, Y. Lam, P. Louie, R. Sharpe, R. Williams, AND G. Hagler. Solar-powered air quality monitor applied under subtropical conditions in Hong Kong: Performance evaluation and application for pollution source tracking. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 214:116825, (2019). https://doi.org/10.1016/j.atmosenv.2019.116825
Schneider, P., A. Bartonova, N. Castell, F. Dauge, M. Gerboles, G. Hagler, C. Huglin, R. Jones, S. Khan, A. Lewis, B. Mijling, M. Muller, M. Penza, L. Spinelle, B. Stacy, M. Vogt, J. Wesseling, AND R. Williams. Toward a Unified Terminology of Processing Levels for Low-Cost Air-Quality Sensors. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 53(15):8485-8487, (2019). https://doi.org/10.1021/acs.est.9b03950
Williams, R. US EPA Emerging Sensor Technologies Research (KS webinar). Webinar - Kansas State University, NA, Webinar, January 09, 2019.
2018
Barzyk, T., H. Huang, R. Williams, A. Kaufman, AND J. Essoka. Advice and Frequently Asked Questions (FAQs) for Citizen-Science Environmental Health Assessments. International Journal of Environmental Research and Public Health. Molecular Diversity Preservation International, Basel, Switzerland, 15(5):960, (2018). https://doi.org/10.3390/ijerph15050960
Williams, R., D. Nash, G. Hagler, K. Benedict, I. MacGregor, B. Seay, M. Lawrence, AND T. Dye. Air Quality Sensor Technologies: Ozone Literature Findings. EPA Sensor Performance Deliberations Workshop, Research Triangle Park, NC, June 25 - 27, 2018.
Hagler, G., R. Williams, V. Papapostolou, AND A. Polidori. Air Quality Sensors and Data Adjustment Algorithms: When Is It No Longer a Measurement? ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 52(10):5530–5531, (2018). https://doi.org/10.1021/acs.est.8b01826
Williams, R., Vasu Kilaru, AND K. Benedict. Air Sensors 2018: Deliberating Performance Targets. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 1-2, (2018).
Morawska, L., P. Thai, X. Liu, A. Asumadu-Sakyi, G. Ayoko, A. Bartonova, A. Bedini, F. Chai, B. Christensen, M. Dunbabin, J. Gao, G. Hagler, R. Jayaratne, P. Kumar, A. Lau, P. Louie, M. Mazaheri, Z. Ning, N. Motta, B. Mullins, M. Rahman, Z. Ristovski, M. Shafiei, D. Tjondronegoro, D. Westerdahl, AND R. Williams. Applications of low-cost sensing technologies for air quality monitoring and exposure assessment: How far have they gone? ENVIRONMENT INTERNATIONAL. Elsevier B.V., Amsterdam, Netherlands, 116:286-299, (2018). https://doi.org/10.1016/j.envint.2018.04.018
Reece, S., R. Williams, AND M. Colon. Assessment of Temporal and Spatial Trends of Air Pollutants Using Low-Cost Sensors in Peñuelas, Puerto Rico. ISES-ISEE 2018 Joint Annual Meeting, Ottawa, CANADA, August 26 - 30, 2018.
Reece, S., N. Feinberg, R. Williams, M. Colon, A. Iglesias, E. Huertas, M. OShea, P. Sheridan, AND D. Southgate. Assessment of air pollutants spatial trends in Penuelas, Puerto Rico using low cost air quality sensors. 2018 Air Sensors International Conference, Oakland, CA, September 12 - 14, 2018.
Williams, R. Emerging Sensor Technologies. WESTAR (Western States Air Resources Council)-webinar, Webinar, September 18 - 19, 2018.
Conner, T., A. Clements, R. Williams, M. Srivastava, AND A. Kaufman. Macro Analysis Tool - MAT. U.S. Environmental Protection Agency, Washington, DC, 2018.
Breen, M., Y. Xu, A. Schneider, R. Williams, AND R. Devlin. Modeling individual exposures to ambient PM2.5 in the diabetes and the environment panel study (DEPS). SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 626:807-816, (2018).
Williams, R., D. Nash, G. Hagler, K. Benedict, I. MacGregor, B. Seay, M. Lawrence, AND T. Dye. Peer Review and Supporting Literature Review of Air Sensor Technology Performance Targets. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-18/324, 2018.
Reece, S., R. Williams, M. Colon, D. Southgate, E. Huertas, M. OShea, A. Iglesias, AND P. Sheridan. Spatial-Temporal Analysis of PM2.5 and NO2 Concentrations Collected Using Low-Cost Sensors in Peñuelas, Puerto Rico. Sensors. MDPI, Basel, Switzerland, 18(12):4314, (2018). https://doi.org/10.3390/s18124314
Williams, R. US EPA Air Sensor Research and Citizen Science. International Webinar on Science and Technology (ERN-APULIA), Webinar, September 28, 2018.
Williams, R. US EPA Emerging Sensor Technologies Research. Michigan Dept of Health (Webinar), webinar, December 12, 2018.
2017
Kaufman, A., R. Williams, T. Barzyk, M. Greenberg, M. OShea, P. Sheridan, A. Hoang, C. Ash, A. Teitz, M. Mustafa, AND S. Garvey. A Citizen Science and Government Collaboration: Developing Tools to Facilitate Community Air Monitoring. ENVIRONMENTAL JUSTICE. Mary Ann Liebert, Inc., New Rochelle, NY, 10(2):1-11, (2017).
Williams, R., T. Conner, A. Clements, V. Foltescu, V. Nthusi, J. Jabbour, D. Nash, J. Rice, A. Kaufman, A. Rourk, AND M. Srivastava. Performance Evaluation of the United Nations Environment Programme Air Quality Monitoring Unit. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-17/171, 2017.
2016
Breen, M., Y. Xu, A. Schneider, R. Williams, AND R. Devlin. Modeling Air Pollution Exposure Metrics for the Diabetes and Environment Panel Study (DEPS). 2016 Annual International Society of Exposure Science Meeting, Utrecht, The Netherlands, October 09 - 13, 2016.
Conner, T., L. Černikovský, J. Novák, AND R. Williams. Source apportionment with uncertainty estimates of fine particulate matter in Ostrava, Czech Republic using Positive Matrix Factorization. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 7(3):503-512, (2016).
2015
Breen, M., T. Long, B. Schultz, R. Williams, J. Richmond-Bryant, M. Breen, J. Langstaff, R. Devlin, A. Schneider, J. Burke, S. Batterman, AND Q. Meng. Air Pollution Exposure Model for Individuals (EMI) in Health Studies: Evaluation for Ambient PM2.5 in Central North Carolina. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(24):14184-14194, (2015).
Conner, T., L. Cernikovsky, J. Novak, H. Placha, B. Krejci, I. Nikolova, E. Chalupníckova, AND R. Williams. An investigation of local and regional sources of fine particulate matter in the Ostrava,the Czech Republic. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 6(3):454-463, (2015).
Shin, H., Paul A. Jones, R. Brook, R. Bard, K. Oliver, AND R. Williams. Associations between Personal Exposures to VOCs and Alterations in Cardiovascular Physiology: Detroit Exposure and Aerosol Research Study (DEARS). ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 104:246-255, (2015).
Shin, H., Paul-A Jones, R. Brook, R. Bard, K. Oliver, AND R. Williams. Associations between personal exposures to VOCs and alterations in cardiovascular physiology: Detroit Exposure and Aerosol Research Study (DEARS) - presentation. 2015 ISEE, Sao Paulo, BRAZIL, August 30 - September 03, 2015.
Williams, R., A. Kaufman, AND S. Garvey. CAIRPOL CAIRCLIP NM-VOC. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/115 (NTIS PB2015-104894), 2015.
Williams, R., A. Kaufman, AND S. Garvey. CAIRPOL CAIRCLIP O3-NO2. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/117 (NTIS PB2015-105134), 2015.
WILLIAMS, R. W., T. M. BARZYK, AND A. KAUFMAN. Citizen Science Air Monitor (CSAM) Quality Assurance Guidelines. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/008, 2015.
Mukerjee, S., L. Smith, H. Brantley, C. Stallings, L. Neas, Sue Kimbrough, AND R. Williams. Comparison of modeled traffic exposure zones using on-road air pollution measurements. Atmospheric Pollution Research. Turkish National Committee for Air Pollution Research and Control, Izmir, Turkey, 6(1):82-87, (2015).
Williams, R., A. Kaufman, AND S. Garvey. DYLOS DC110. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/116 (NTIS PB2015-104895), 2015.
Williams, R. Emerging Low-Cost Sensors for Various Applications (Next Generation Air Monitoring). Federal Data Working Group, McLean , VA, McLean, VA, October 19, 2015.
Williams, R., A. Kaufman, T. Hanley, J. Rice, AND S. Garvey. Evaluation of Elm and Speck Sensors. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/314, 2015.
Kaufman, A., R. Williams, S. Hunt, R. French, H. Wilson, G. Hagler, Vasu Kilaru, P. Fine, S. Katz, G. Robarge, AND D. Renwick. Highlights from the Air Sensors 2014 Workshop. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 34-39, (2015).
Williams, R., A. Kaufman, AND S. Garvey. MET ONE 831. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/114 (NTIS PB2015-104893), 2015.
Williams, R., A. Kaufman, AND S. Garvey. Next Generation Air Monitoring (NGAM) VOC Sensor Evaluation Report. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/122 (NTIS PB2015-105133), 2015.
Williams, R., A. Kaufman, AND S. Garvey. PERKINELMER ELM. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/125 (NTIS PB2015-105136), 2015.
Thomas, K., J. Xue, R. Williams, P. Jones, AND D. Whitaker. Polychlorinated biphenyl sources, environmental levels, and exposures in school buildings. ISES 2015 Annual Meeting, Henderson, NV, October 18 - 22, 2015.
Conner, T., L. Cernikovsky, J. Novak, AND R. Williams. Source apportionment with uncertainty estimates of PM2.5 in Ostrava, Czech Republic using Positive Matrix Factorization. 2015 European Aerosol Conference, Milan, ITALY, September 10, 2015.
Williams, R., A. Kaufman, AND S. Garvey. TOXIRAE PRO PID. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/124 (NTIS PB2015-105135), 2015.
Kaufman, A., R. Williams, T. Barzyk, M. OShea, A. Hoang, P. Sheridan, AND M. Greenberg. The Air Sensor Citizen Science Toolbox: A Collaboration in Community Air Quality Monitoring and Mapping. Citizen Science 2015 Conference, San Jose, CA, February 11 - 12, 2015.
Williams, R., A. Kaufman, AND S. Garvey. UNITEC SENS-IT. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/119 (NTIS PB2015-105132), 2015.
2014
Williams, R., D. Costa, A. Brown, A. Kaufman, D. Buchbinder, G. Hagler, E. Thoma, Bill Mitchell, B. Gullett, W. Jiao, Vasu Kilaru, R. Long, M. Beaver, R. Duvall, P. Solomon, K. Leovic, E. Smith, L. Stanek, Tim Watkins, P. Preuss, S. Katz, G. Robarge, E. Snyder, B. Sharpe, AND S. Garvey. #2) Sensor Technology-State of the Science. Webinar Presentation - Sensor Technology-State of the Science, Research Triangle Park, NC, July 08, 2014.
Williams, R., Vasu Kilaru, E. Snyder, A. Kaufman, T. Dye, A. Rutter, A. Russell, AND H. Hafner. Air Sensor Guidebook. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/159 (NTIS PB2015-100610), 2014.
Hammond, D., C. Croghan, H. Shin, R. Burnette, R. Bard, R. Brook, AND R. Williams. Cardiovascular impacts and micro-environmental exposure factors associated with continuous personal PM2.5 monitoring. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 24(4):337-345, (2014).
Kaufman, A., R. Williams, T. Barzyk, AND Tim Watkins. Citizen Science and Emerging Technologies. Presented at US Public Health Service Scientific and Training Symposium, Raleigh, NC, June 10 - 12, 2014.
Holliday, K., C. Avery, C. Poole, K. McGraw, R. Williams, D. Liao, R. Smith, AND E. Whitsel. Estimating Personal Exposures from Ambient Air Pollution Measures - Using Meta-Analysis to Assess Measurement Error. EPIDEMIOLOGY. Lippincott Williams & Wilkins, Philadelphia, PA, 25(1):35-36, (2014).
Williams, R., A. Kaufman, T. Hanley, J. Rice, AND S. Garvey. Evaluation of Field-deployed Low Cost PM Sensors. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/464 (NTIS PB 2015-102104), 2014.
Kioumourtzoglou, M., D. Spiegelman, A. Szpiro, L. Sheppard, J. Kaufman, J. Yanosky, R. Williams, F. Laden, B. Hong, AND H. Suh. Exposure Measurement Error in PM2.5 Health Effects Studies: A Pooled Analysis of Eight Personal Exposure Validation Studies. ENVIRONMENTAL HEALTH PERSPECTIVES. National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, NC, 13(2):1-11, (2014).
Thomas, K., J. Xue, R. Williams, Paul-A Jones, AND D. Whitaker. Exposure Modeling for Polychlorinated Biphenyls in School Buildings. 8th International PCB Workshop, Woods Hole, MA, October 05 - 09, 2014.
Breen, M., T. Long, Brad Schultz, J. Crooks, M. Breen, J. Langstaff, K. Isaacs, C. Tan, R. Williams, Y. Cao, A. Geller, R. Devlin, S. Batterman, AND T. Buckley. GPS-based Microenvironment Tracker (MicroTrac) Model to Estimate Time-Location of Individuals for Air Pollution Exposure Assessments: Model Evaluation in Central North Carolina. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 24(4):412-420, (2014).
Tulve, N., K. Isaacs, R. Williams, T. McCurdy, L. Phillips, C. Croghan, AND H. Ozkaynak. How Questionnaires and Multimedia Measurements collected in the U.S. EPA’s Observational Human Exposure Measurement Studies Inform Exposures. ISES 2014 Annual Meeting, Cincinnati, OH, October 12 - 16, 2014.
Williams, R. ISES Training Class - Continuous Measurements. 2014 International Society of Exposure Science, Cincinnati, OH, October 12 - 16, 2014.
Willis, R., L. Cernikovsky, T. Conner, J. Novak, H. Placa, B. Krejei, I. Nikolova, E. Chalupniekova, AND R. Williams. Identifying the Sources Contributing to PM Exceedances in Ostrava, Czech Republic, Using Passive Aerosol Sampling Coupled with Computer-Controlled Microscopy. Presented at Dust 2014 International Conference on Atmospheric Dust, Castellaneta Marina, ITALY, June 01 - 06, 2014.
Williams, R., Tim Watkins, AND R. Long. Low Cost Sensor Calibration Options. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 10-15, (2014).
MacDonnell, M., M. Raymond, D. Wyker, M. Finster, Y. Chang, T. Raymond, B. Temple, M. Scofield, D. Vallano, E. Snyder, AND R. Williams. Mobile Sensors and Applications for Air Pollutants. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/051 (NTIS PB2014 105955), 2014.
Williams, R., R. Long, M. Beaver, R. Duvall, Sue Kimbrough, E. Thoma, Bill Mitchell, J. Rice, T. Hanley, AND S. Garvey. Observations from Laboratory and Field-based Evaluations of Select Low Cost Sensor Performance. 2014 International Society of Exposure Science, Cincinnati, OH, October 12 - 16, 2014.
Long, R., M. Beaver, R. Williams, K. Kronmiller, AND S. Garvey. Procedures and Concepts of EPA's Ongoing Sensor Evaluation Efforts. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 8-9, (2014).
Stevens, C., R. Williams, AND Paul-A Jones. Progress and Understanding Spatial and Temporal Variability of PM2.5 and its Components in the Detroit Exposure and Aerosol Research Study (DEARS). JOURNAL OF ENVIRONMENTAL MONITORING. Royal Society of Chemistry, Cambridge, Uk, 16(1):94-105, (2014).
Breen, M., Brad Schultz, M. Sohn, T. Long, J. Langstaff, R. Williams, K. Isaacs, Q. Meng, C. Stallings, AND L. Smith. Review of Air Exchange Rate Models for Air Pollution Exposure Assessments. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 24(6):555-563, (2014).
Williams, R., R. Long, M. Beaver, A. Kaufman, F. Zeiger, M. Heimbinder, I. Hang, R. Yap, B. Acharya, B. Ginwald, K. Kupcho, S. Robinson, O. Zaouak, B. Aubert, M. Hannigan, R. Piedrahita, N. Masson, B. Moran, M. Rook, P. Heppner, C. Cogar, N. Nikzad, AND W. Griswold. Sensor Evaluation Report. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/143 (NTIS PB2015-100611), 2014.
Williams, R., R. Long, M. Beaver, G. Hagler, Sue Kimbrough, E. Thoma, Bill Mitchell, T. Hanley, J. Rice, S. Garvey, B. Sharpe, W. Jiao, AND K. Kronmiller. Sensor Technology Performance Characteristics- Field and Laboratory Observations. 2014 Air Sensors Workshop, Research Triangle Park, NC, June 09 - 10, 2014.
Williams, R. Sensor Technology-State of the Science. RTP-AWMA Serminar Series, Research Triangle Park, NC, March 19, 2014.
Kaufman, A., R. Williams, T. Barzyk, M. OShea, A. Hoang, AND P. Sheridan. The Air Sensor Citizen Science Toolbox: A Collaboration in Community Air Quality Monitoring and Mapping? 2015 Citizen + X Workshop, Pittsburg, PA, November 02, 2014.
Kaufman, A., A. Brown, T. Barzyk, AND R. Williams. The Citizen Science Toolbox: A One-Stop Resource for Air Sensor Technology. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 48-49, (2014).
Williams, R., R. Long, M. Beaver, A. Kaufman, T. Hanley, J. Rice, AND S. Garvey. The State of Sensor Technology and Air Quality Monitoring. Presented at National Environmental Monitoring Conference, Washington, DC, August 04 - 08, 2014.
2013
Williams, R. Advancing Air Quality Monitoring Technologies. Presented at 2013 AAAR Emerging Sensor Technology Symposium, Portland, OR, October 02 - 04, 2013.
Williams, R. Advancing Air Quality Technologies. Presented at Invited presentation to Campbell Univ. undergrads at request of RTP Speaker's Burear and ORD STEM Director, RTP, NC, November 13, 2013.
Snyder, E., Tim Watkins, P. Solomon, E. Thoma, R. Williams, G. Hagler, D. Shelow, D. Hindin, Vasu Kilaru, AND P. Preuss. Changing the Paradigm of Air Pollution Monitoring. ENVIRONMENTAL SCIENCE AND TECHNOLOGY. John Wiley & Sons, Ltd., Indianapolis, IN, 47(20):11369-11914, (2013).
Shelow, D., E. Snyder, Tim Watkins, E. Thoma, G. Hagler, AND R. Williams. Changing the Paradigm of Air Pollution Monitoring......Opportunities and Challenges. Presented at 2013 National Environmental Monitoring Conference, San Antonio, TX, August 07 - 09, 2013.
Williams, R. Emerging Air Quality Technologies. Presented at RTP's Speaker's Bureau invited presentation to Durham Kiwanis, RTP, NC, October 24, 2013.
Johnson, M., G. Mallach, R. Kulka, R. Dietz, T. Sullivan, M. Gibson, L. Wallace, H. Ozkaynak, R. Williams, A. Wheeler, AND K. Ryswyk. Factors influencing indoor air quality in an urban high rise apartment building (retitled as "Air Pollution and air exchange in an urban high rise apartment building"). Presented at 2013 ISEE/ISES, Basel, SWITZERLAND, August 19 - 23, 2013.
WILLIAMS, R. W., C. W. CROGHAN, AND P. B. RYAN. Human Exposures to PAHs: an Eastern United States Pilot Study. ENVIRONMENTAL MONITORING AND ASSESSMENT. Springer, New York, NY, 185(1):1011-1023, (2013).
Isaacs, K., J. Burke, L. Smith, AND R. Williams. Identifying Housing and Meteorological Conditions Influencing Residential Air Exchange Rates in the DEARS and RIOPA Studies: Development of Distributions for Human Exposure Modeling. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 23(3):248-258, (2013).
Snyder, E., P. Solomon, R. Williams, E. Thoma, D. Vallano, AND T. Buckley. Low Cost Sensors-Current Capabilities and Gaps. Presented at 2013 ISEE Environmental Health Conference, Basel, SWITZERLAND, September 19 - 23, 2013.
Snyder, E., P. Solomon, M. MacDonell, R. Williams, E. Thoma, D. Vallano, M. Raymond, AND D. Olson. Next generation air monitoring-a review of portable air pollution sensors. Presented at 2013 32nd annual AAAR, Portland, OR, September 30, 2013.
Williams, R., K. Kovalcik, A. Rappold, AND R. Devlin. Personal and community coarse PM mass component comparisons. Presented at 32nd Annual AAAR conference, Portland, OR, October 03, 2013.
Williams, R. Sensor Technology and Advancing the Monitoring Paradigm. Presented at Air and Waste Management's Information Exchange, RTP, NC, December 11, 2013.
Cernikovsky, L., J. Novak, H. Placa, B. Krejci, I. Nikolova, E. Chalupnickova, T. Conner, G. Norris, K. Kovalcik, D. Olson, J. Turlington, C. Croghan, R. Willis, AND R. Williams. The Impact of Select Pollutant Sources on Air Quality and the Moravian-Silesian Metropolitan Region by the Positive Matrix Factorization Model. Presented at 2013 European Aerosol Conference, Prague, CZECH REPUBLIC, September 01 - 06, 2013.
2012
ANDERSONBEREZNICKI, S. D., J. SOBUS, A. F. VETTE, M. Stiegel, AND R. W. WILLIAMS. Assessing Spatial and Temporal Variability of VOCs and PM-Components in Outdoor Air during the Detroit Exposure and Aerosol Research Study (DEARS). ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 61(December, 2012):159-168, (2012).
Meng, Q., R. W. WILLIAMS, AND J. P. PINTO. Determinants Of The Associations Between Ambient Concentrations And Personal Exposures To Ambient Pm2.5, No2, And O3 During Dears. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 63:109-116, (2012).
DUVALL, R. M., D. A. OLSON, G. A. NORRIS, J. M. BURKE, R. VEDANTHAM, AND R. W. WILLIAMS. Determining Spatial Variability in PM2.5 Source Impacts across Detroit, MI. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 47(February):491-498, (2012).
Lawless, P., J. Thornburg, C. E. RODES, AND R. W. WILLIAMS. Personal Exposure Monitoring Wearing Protocol Compliance: An Initial Assessment of Quantitative Measurements. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 22(3):274-280, (2012).
WILLIAMS, R. W., P. A. JONES, C. W. CROGHAN, J. Thornburg, AND C. E. RODES. The Influence of Human and Environmental Exposure Factors on Personal NO2 Exposures. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 22(2):109-115, (2012).
2011
GEORGE, B. J., B. D. SCHULTZ, T. PALMA, A. F. VETTE, D. A. WHITAKER, AND R. W. WILLIAMS. An Evaluation of EPA's National-Scale Air Toxics Assessment (NATA): Comparison with Benzene Measurements in Detroit, Michigan. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 45(19):3301-3308, (2011).
McBride, S. J., G. A. NORRIS, R. W. WILLIAMS, AND L. M. NEAS. Bayesian Hierarchical Modeling of Cardiac Response to Particulate Matter Exposure. Journal of Exposure Science and Environmental Epidemiology . Nature Publishing Group, London, Uk, 21(1):74-91, (2011).
Brook, R. D., H. H. Shin, R. L. Bard, R. T. Burnett, A. F. VETTE, C. W. CROGHAN, AND R. W. WILLIAMS. Can Personal Exposures to Higher Nighttime and Early Morning Temperatures Increase Blood Pressure? JOURNAL OF CLINICAL HYPERTENSION. John Wiley & Sons Incorporated, New York, NY, 13(12):881-888, (2011).
Brook, R. D., R. L. Bard, R. T. Burnett, H. H. Shin, A. F. VETTE, C. W. CROGHAN, M. Phillips, C. E. RODES, J. Thornburg, AND R. W. WILLIAMS. Differences in Blood Pressure and Vascular Responses Associated with Ambient Fine Particulate Matter Exposures Measured at the Personal Versus Community Level. JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE. Lippincott Williams & Wilkins, Philadelphia, PA, 68(3):224-230, (2011).
Brook, R., H. H. Shin, R. L. Bard, R. T. Burnett, A. F. VETTE, C. W. CROGHAN, J. Thornburg, C. E. RODES, AND R. W. WILLIAMS. Exploration of the Rapid Effects of Personal Fine Particulate Matter Exposure on Hemodynamics and Vascular Function during the Same Day . ENVIRONMENTAL HEALTH PERSPECTIVES. National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, NC, 119(5):688-694, (2011).
CHEN, F., R. W. VANDERPOOL, R. W. WILLIAMS, F. DIMMICK, B. GROVER, R. W. LONG, AND R. MURDOCH. Field Evaluation of Portable and Central Site PM Samplers Emphasizing Additive and Differential Mass Concentration Estimates. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 45(26):4522-4527, (2011).
GALLAGHER, J., D. M. Reif, B. HEIDENFELDER, L. M. NEAS, E. E. HUDGENS, A. H. WILLIAMS, J. P. INMON, S. W. RHONEY, R. W. WILLIAMS, G. L. Andrews, M. M. Johnson, H. A. OZKAYNAK, S. W. Edwards, S. W. Cohen, AND E. A. Hubal. Mechanistic Indicators of Childhood Asthma (MICA): piloting an integrative design for evaluating environmental health. BMC PUBLIC HEALTH 11(1):344, (2011).
WILLIAMS, R. W. The DEARS Data Analysis Workshops: Summary of Findings and Discussions. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-11/048 (NTIS PB2011-110657), 2011.
Wheeler, A. J., X. Xu, R. Kulka, H. You, L. A. WALLACE, G. Mallach, K. Van Ryswy, M. MacNeill, J. Kearney, P. Rasmussen, E. Dabek-Zlotorzynska, D. Wang, R. Poon, R. W. WILLIAMS, C. Stocco, A. Anastassopoulos, J. Miller, R. Dales, AND J. R. BROOK. Windsor, Ontario Exposure Assessment Study: Design and Methods Validation of Personal, Indoor and Outdoor Air Pollution Monitoring. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, 61(3):324-338, (2011).
2010
He, F., M. L. Shaffer, S. Rodrigues-Colon, E. O. Bixler, A. N. Vgontzas, R. W. WILLIAMS, R. Wu, W. CASCIO, AND D. LIAO. Acute Effects of Fine Particulate Air Pollution on ST Segment Height: A Longitudinal Study. JOURNAL OF ENVIRONMENTAL HEALTH. National Environmental Health Association, Denver, CO, 9(68):1-10, (2010).
RODES, C. E., P. A. Lawless, J. W. Thornburg, R. W. WILLIAMS, AND C. W. CROGHAN. DEARS Particulate Matter Relationships for Personal, Indoor, Outdoor, and Central Site Settings for a General Population. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 44(11):1386-1399, (2010).
Avery, C. L., K. T. Mills, R. W. WILLIAMS, K. A. McGraw, C. Poole, R. L. Smith, AND E. A. Whitsel. Estimating Error in Using Ambient PM2.5Concentrations as Proxies for Personal Exposures: A Review. EPIDEMIOLOGY. Lippincott Williams & Wilkins, Philadelphia, PA, 21(2):215-223, (2010).