*Applications may be reviewed on a rolling-basis and this posting could close before the deadline. Click here for information about the selection process.EPA Office/Lab and Location: A research opportunity is available at the Environmental Protection Agency (EPA), Office of Research and Development (ORD), Center for Public Health Environmental Assessment (CPHEA). This appointment will be located jointly within the Public Health and Integrated Toxicology Division (PHITD) and the Health and Environmental Effects Assessment Division (HEEAD) located in Research Triangle Park, North Carolina.Research Project: Through this project, the research participant will have the opportunity to conduct and publish research that connects measurement-error modeling to statistical practice by characterizing variability of measurement data that may be attributed to measurement error. This research has potential to make sound alternatives to censoring non-detects (i.e., concentration measurements below detection limits) accessible to scientists. The research participant will also have the opportunity to develop and expand their knowledge and skills by applying state-of-the-art data analysis tools to descriptive and predictive modeling. This includes frequent itemset mining for determination of prevalent combinations, physiologically based pharmacokinetic modeling of multi-route and multi-chemical exposures and statistical models for evaluation of mixtures data for consistency with various additivity assumptions. This may include the development and/or scientific analysis of multiple models and resulting simulations, documentation of modeling, data analysis, and writing of journal articles.Learning Objectives: The research participant will have the opportunity to collaborate with EPA statisticians and toxicologists and to apply knowledge of sophisticated statistical methods. The research participant will have the opportunity to collaborate in publishing one or more peer-reviewed journal articles on the measurement error modeling, frequent itemset mining, pharmacokinetic modeling, and statistical exploration of mixture toxicity data. The research participant will have the opportunity to develop and publish R code for scientists’ use. The research participant may attend and present at one or two statistics/toxicology/risk assessment conferences a year.Mentor(s): The mentors for this opportunity are B.J. George (email@example.com) and Jane Ellen Simmons (firstname.lastname@example.org). If you have questions about the nature of the research please contact the mentor(s).Anticipated Appointment Start Date: Winter 2021. All start dates are flexible and vary depending on numerous factors. Click here for detailed information about start dates.Appointment Length: The appointment will initially be for one year and may be renewed up to three or four additional years upon EPA recommendation and subject to availability of funding.Level of Participation: The appointment is full-time.Participant Stipend: The participant will receive a monthly stipend commensurate with educational level and experience. Click here for detailed information about full-time stipends.EPA Security Clearance: Completion of a successful background investigation by the Office of Personnel Management (OPM) is required for an applicant to be on-boarded at EPA.ORISE Information: This program, administered by ORAU through its contract with the U.S. Department of Energy (DOE) to manage the Oak Ridge Institute for Science and Education (ORISE), was established through an interagency agreement between DOE and EPA. Participants do not become employees of EPA, DOE or the program administrator, and there are no employment-related benefits. Proof of health insurance is required for participation in this program. Health insurance can be obtained through ORISE.Questions: Please see the FAQ section of our website. After reading, if you have additional questions about the application process please email EPArpp@orau.org and include the reference code for this opportunity.