Kathy Ensor

American statistician

Katherine Bennett Ensor is an American statistician specializing in numerous methods in computational and statistical analysis of time series data, stochastic process modeling, and estimation to forecast issues in public health, community informatics, computational finance, and environmental statistics.

Ensor is the Noah G. Harding Professor of Statistics and Director of the Center for Computational Finance and Economic Systems at Rice University. From 2016–2022, she was Director of the Kinder Institute Urban Data Platform, a data resource initiative for the Greater Houston area that includes the Texas Flood and COVID-19 registries. She is an Executive Team Member for Houston Wastewater Epidemiology, a SARS-CoV-2 wastewater monitoring initiative between Rice University, the Houston Health Department, Houston Public Works, and the City of Houston. [1] In August 2022, Houston Wastewater Epidemiology was named a National Wastewater Surveillance System (NWSS) Center of Excellence by the U.S. Centers for Disease Control and Prevention.[2]

## Career and Research

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Ensor's statistical and computational methods for the development of modeling frameworks pinpoint, track and forecast issues across a wide variety of fields.

Since the start of her academic career, a focus of her research has sought a deeper understanding of problems in energy,[3] quantitative finance[4][5] and risk management.[6] In 2002, she collaborated with university and industry partners to establish the Center for Computational Finance and Economic Systems (CoFES). She has since continued to serve as the center’s director and has developed numerous programs in graduate and undergraduate research and education.[7]

Ensor is widely known for her expertise in community analytics, which has grown through her career-long commitment to environmental and health-based research. Through collaborations with cross-disciplinary groups of educators, scientists, engineers, and city and public health professionals, she has quantitatively assessed air quality and human exposure to environmental contaminants. The work has also included the discovery of a correlation between ozone and heart attacks, and of geographic patterns in severe asthma attacks in schoolchildren.[8][9][10]

In May 2020, Ensor and collaborators at Rice University, the Houston Health Department, Houston Public Works, and the City of Houston, began conducting ongoing testing of the city’s wastewater treatment system for the presence of SARS-CoV-2, the virus that causes COVID-19.[11]

The wastewater monitoring system has also been adapted to provide public health information on seasonal influenza, the respiratory syncytial virus (RSV), mpox and other human pathogens.[12][13]

As Director of the Kinder Institute Urban Data Platform from 2016–2022, Ensor investigated historical Houston flood event trends and Hurricane Harvey and on the health and housing impacts of the COVID-19 pandemic and COVID-19 vaccines.[14] Additional studies have investigated mitigating risk and the affects climate change. [15]

Ensor advises on statistics and data science as a member of the Board of Directors for the Accreditation Board for Engineering and Technology (ABET) – Computer Science Accreditation Board (CSAB). She serves on the Board of Scientific Counselors for the National Institute of Environmental Health Sciences (NIEHS) and the Board of Trustees for the National Science Foundation (NSF) Institute for Pure and Applied Mathematics (IPAM). She was the 117th President of the American Statistical Association’s (ASA) Board of Directors (2021–2022)[16] and Vice President of ASA’s Board of Directors from 2016–2018. She was a member of the National Academies of Sciences, Engineering and Medicine (NASEM) Committee on Applied and Theoretical Statistics (CATS) from 2015–2021. [17]

Ensor earned bachelor's and master's degrees in mathematics from Arkansas State University in 1981 and 1982. She completed her Ph.D. in statistics in 1986 from Texas A&M University;[17] her dissertation, supervised by H. Joseph Newton, was Some Results in Autoregressive Modeling.[18] She has been on the Rice faculty since 1987.[17]

## References

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1. ^ "curriculum vitae".
2. ^ "news and information/top-stories".
3. ^ Raath, Kim; Ensor, Katherine (23 June 2020). "Time-varying wavelet-based applications for evaluating the water-energy nexus". Frontiers in Energy Research. 8: 118. doi:10.3389/fenrg.2020.00118.
4. ^ Ensor, Katherine; Koev, Ginger (25 July 2014). "Computational finance: correlation, volatility, and markets". WIREs Computational Statistics. 6 (5): 326–340. doi:10.1002/wics.1323.
5. ^ Kyj, Lada; Ostdiek, Barbara; Ensor, Katherine (22 March 2009). Covariance estimation in dynamic portfolio optimization: a realized single factor model. American Finance Association Annual Meeting. doi:10.2139/ssrn.1364642. SSRN 1364642.
6. ^ Ensor, Katherine; Glynn, Peter (1 April 2000). "Simulating the maximum of a random walk". Journal of Statistical Planning and Inference. 85 (1–2): 127–135. doi:10.1016/S0378-3758(99)00075-0.
7. ^ "cofes.rice.edu".
8. ^ Ensor, Katherine; Raun, Loren; Persse, David (2013-02-13). "A case-crossover analysis of out-of-hospital cardiac arrest and air pollution". Circulation. 127 (11): 1192–1199. doi:10.1161/CIRCULATIONAHA.113.000027. PMID 23406673. S2CID 173692.
9. ^ Raun, Loren; Ensor, Katherine; Persse, David (2014). "Using community level strategies to reduce asthma attacks triggered by outdoor air pollution: a case crossover analysis". Environmental Health. 13 (1): 58. Bibcode:2014EnvHe..13...58R. doi:10.1186/1476-069X-13-58. PMC 4108967. PMID 25012280.
10. ^ Raun, Loren; Jefferson, Larry; Persse, David; Ensor, Katherine (August 2013). "Geospatial analysis for targeting out-of-hospital cardiac arrest intervention". American Journal of Preventive Medicine. 45 (2): 137–142. doi:10.1016/j.amepre.2013.03.013. PMID 23867019.
11. ^ Stadler, L.; Ensor, K.B.; Clark, J.R.; Kalvapalle, P.; LaTurner, Z.W.; Mojica, L.; Terwilliger, A.; Zhuo, Y.; Ali, P.; Avadhanula, V.; Bertolusso, R.; Crosby, T.; Hernandez, H.; Hollstein, M.; Weesner, K.; Zong, D.M.; Persse, D.; Piedra, P.A.; Maresso, A.W.; Hopkins, L. (2020-11-06). "Wastewater Analysis of SARS-CoV-2 as a Predictive Metric of Positivity Rate for a Major Metropolis". medRxiv 10.1101/2020.11.04.20226191.
12. ^ "news and information/manuscripts".
13. ^ Hopkins, Loren; Persse, David; Caton, Kelsey; Ensor, Katherine; Schneider, Rebecca; McCall, Camille; Stadler, Lauren (10 January 2023). "Citywide wastewater SARS-CoV-2 levels strongly correlated with multiple disease surveillance indicators and outcomes over three COVID-19 waves". Science of the Total Environment. 855: 158967. Bibcode:2023ScTEn.85558967H. doi:10.1016/j.scitotenv.2022.158967. PMC 9507781. PMID 36162580.
14. ^ Callender, Rashida; Canales, Joally; Avendano, Carolina; Craft, Elena; Ensor, Katherine; Miranda, Marie Lynn (November 2022). "Economic and mental health impacts of multiple adverse events: Hurricane Harvey, other flooding events, and the COVID-19 pandemic". Environmental Research. 124, Part 3 (Pt 3): 114020. Bibcode:2022ER....21414020C. doi:10.1016/j.envres.2022.114020. PMC 9357442. PMID 35948147.
15. ^ Fagnant, Carlynn; Gori, Avantika; Sebastian, Antonia; Bedient, Philip; Ensor, Katherine (1 September 2020). "Characterizing spatiotemporal trends in extreme precipitation in Southeast Texas". Natural Hazards. 104 (2): 1597–1621. Bibcode:2020NatHa.104.1597F. doi:10.1007/s11069-020-04235-x.
16. ^ "magazine.amstat.org". July 2020.
17. ^ a b c Curriculum vitae, retrieved 2022-01-14
18. ^ Kathy Ensor at the Mathematics Genealogy Project

## External links

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* Rice University, Department of Statistics
* Rice University, Ensor website
* Rice University, Center for Computational Finance and Economic Systems (CoFES)
* Houston Wastewater Epidemiology

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