CONTACT INFORMATION

Timothy P. Keller

*** ********* *****

Columbia, Mo. 65201

571-***-**** (Cell)

ac8ww1@r.postjobfree.com

WORK EXPERIENCE

Department of Mathematics and Statistics – Saint Louis University

08/01/2018- Present

Supervisor: Bryan Clair, 314-***-****

email: ac8ww1@r.postjobfree.com

40 hours/week

Salary: $ 65,000

Visiting Assistant Professor

During the Fall 2018 semester I taught Foundations of Statistics with R (MATH 3850), a calculus based introduction to probability and Time Series (MATH 4840); this semester I am teaching two sections of MATH 3850 and Calculus I (MATH 1510). I conduct research in statistics, and serve on university committees as required. I have submitted a paper, Optimal Allocation of a Stratified Simple Random Sample with Multiple Estimation Objectives, to the journal Computational Statistics (Springer-Verlag). I continue a research collaboration with personnel at the National Agricultural Statistics Service (USDA).

United States Department of Agriculture - National Agricultural Statistics Service (NASS)-

Methods Division

11/04/2015- 01/05/2018

Supervisor: Peter Quan, 202-***-****

email: ac8ww1@r.postjobfree.com

40 hours/week

Salary: $ 123,234

Mathematical Statistician, GS-13, Step 10

Provided consultation for clients, both internal and external. Participated substantially in all phases of the consultation process: eliciting and formalizing the estimation goals of the client, doing the background research required to understand the subject matter and data, designing the survey instrument, developing an efficient, practical sample design to meet the estimation goals of the client, communicating proposed sampling plans and rationale to the client and participating in the ensuing discussions and negotiations. Prepared formal written documentation of the statistical methodology used for sampling and estimation, as well as the code used to realize those methods.

Developed statistical methodology and applied mathematical tools as appropriate; communicated methods and rationale to colleagues and clients. Developed methodology and SAS code for realizing targeted measures of precision with minimal sample sizes.

Department of Veterans Affairs- Office of the Inspector General

11/03/2014 – 11/03/2015

Supervisor: Lin Clegg, 202-***-****

40 hours/week

Salary: $ 121,635

Deputy Director – Biostatistics, GS-14, Step 5.

Used SAS SQL to extract data from extremely large, poorly documented data sets. The data obtained were used to construct statistical samples of patient records to investigate compliance with program standards, and thereby produce measures of quality for health care delivery.

United States Department of Agriculture - National Agricultural Statistics Service Research and Development Division

06/12/1995 – 11/02/2014

Supervisor: Kay Turner, 202-***-****

40 hours/week

Salary: $ 110,906

Mathematical Statistician, GS-13, Step 8

Researched potential applications of mathematics and statistics to estimation, prediction, imputation and simulation to improve the accuracy of published estimates and increase cost effectiveness. Provided consultation and advice as required, both inside and outside the agency.

Took the initiative to acquire basic knowledge of biology and agronomy on which to base statistical models for making early season predictions of crop yield. Was the principal NASS investigator in a multi-year cooperative agreement with Southern Illinois University-Carbondale to develop data collection techniques and statistical methodology on which to base early season predictions of soybean yield.

Applied mathematical techniques for composite estimation to develop a means of combining multiple indications of yield into a single indication in an optimal manner. This technique has been implemented as part of the analytic package used by the Agricultural Statistics Board in setting published estimates of yield and production.

Worked as a member of a team reviewing imputation methods for US Census of Agriculture. Developed methods for improving and extending the nearest-neighbor methodology used for item non-response on the US Census of Agriculture.

Kept current on developments in mathematics and statistics, and disseminated information about those developments to other investigators in the agency. Represented the agency at professional meetings.

University of Tennessee at Martin Mathematics Department

Supervisor: Dr. Bill Austin

Martin, Tennessee (1994 - 1995)

Salary - $31,000

Assistant Professor

Taught 12 to 15 hours of undergraduate mathematics classes per semester. Conducted mathematical research. Served on university committees as requested.

Southeast Missouri State University Mathematics Department

Supervisor: Dr. Harold Hager

Cape Girardeau, Missouri (1990 - 1993)

Salary - $30,000

Assistant Professor

Taught 12 hours of undergraduate mathematics classes per semester. Conducted mathematical research. Served on university committees as requested. Frequently presented talks on various mathematical topics at department colloquia, meetings of the student mathematics club, and other occasions. Served as a mentor to an MS candidate in mathematics.

Southwest Missouri State University Mathematics Department

Supervisor: Dr. Mike Awad

Springfield, Missouri (1989 – 1990)

Salary - $30,000

Visiting Assistant Professor

Taught 12 hours of undergraduate mathematics classes per semester. Conducted mathematical research. Served on university committees as requested. Presented talks on various mathematical topics at department colloquia, meetings of the student mathematics club, and other occasions.

Southern Illinois University

Supervisor: Dr. Ron Kirk

Carbondale, Illinois (1988 - 1989)

Salary - $24,000

Lecturer

Taught 12 hours of undergraduate mathematics classes per semester while finishing work on my PhD dissertation.

Dept. of Systems Engineering - The Ohio State University

Supervisor: Dr. Clarence Martin

Columbus, Ohio (1980 - 1981)

Salary - Stipend plus tuition waiver Graduate Research Assistant

Coded heuristic Integer-Linear Programming algorithms into FORTRAN. Evaluated run times on the AMDAHL 470 for standard ILP test data sets using the algorithms as coded.

McDonnell Douglas Astronautics

Supervisor: Tony Vetter

St. Louis, Missouri (1978 - 1979)

Salary $17,600

Associate Engineer - Reliability Section - Harpoon Missile Air Launch System

Determined failure disposition of components tested as part of the quality assurance program for the Harpoon missile air launch system. Communicated with vendors, company inspectors, and in-house laboratory personnel to resolve quality control and reliability issues. Wrote a weekly report summarizing the status of quality issues and remedial actions for submission to the US Navy.

WORK EXPERIENCE - Part Time

George Washington University - Adjunct Professor

Supervisor: Dr. Subrata Kundu

Washington, D.C. (Fall 2014 – Fall 2017)

STAT 1051 Introduction to Business & Economic Statistics (3 semesters)

STAT 2183 Intermediate Statistical Packages (2 semesters)

George Mason University - Adjunct Professor

Supervisor: Dr. William Rosenberger Fairfax, Virginia (Fall 1997 – Spring 2014)

Taught a total of 122 credit hours in mathematics, statistics and operations research at the 100,200,300, and once at the 600 level.

Synopsis of Courses Taught at George Mason University:

MA 351 Probability

MA 108 Introductory Calculus with Business Applications (3 semesters)

MA 110 Finite Mathematics (6 semesters)

MA 106 Concepts of Mathematics

MA 203 Matrix Algebra (2 semesters

STAT 250 Introduction to Statistics (32 sections)

STAT 344 Probability and Statistics for Engineers and Scientists (Spring 2006)

OR 675 Reliability Analysis (Summer 2008)

Northern Virginia Community College – Adjunct Professor

Manassas, Virginia (Spring 2011)

MTH 271, Applied Calculus for Business Majors

The Ohio State University Mathematics Department -– Adjunct Professor

Columbus, Ohio (Fall 1995)

Taught an evening section of Business Algebra.

Sterling College -Adjunct Professor (Extension class)

Cape Girardeau, Missouri (Spring 1994)

Taught a section of Intermediate Algebra.

EDUCATION

University of Missouri

Columbia, Missouri

B.S. Industrial Engineering (magna cum laude) 1978

The Ohio State University

Columbus, Ohio

M.S. Industrial and Systems Engineering (Operations Research Specialization) 1981

Southern Illinois University

Carbondale, Illinois

M.S. Mathematics 1983

Southern Illinois University

Carbondale, Illinois

Ph.D. Mathematics 1988

Other Course Work

George Mason University

MATH 314 Introduction to Applied Mathematics- Spring 1999

BIOL 213 Cell Structure and Function - Spring 2000

BIOL 304 Plant Biology -Fall 2000

BIOL 311 General Genetics - Spring 2001

GPA: 4.0 / 4.0

AWARDS

Southern Illinois University Dissertation Research Award (Stipend)-1988

USDA Circle Award - 2008

USDA National Agricultural Statistics Service Administrator’s Award for Excellence – 2009

USDA Risk Management Agency

Administrator’s Award for Excellence – 2016

PUBLICATIONS

Characteristic 4 Witt Rings that are the Product of Group Rings.

Rocky Mountain Journal of Mathematics, vol. 24, no 4, Fall 1994

Witt Groups and the Elementary Type Conjecture

Communications in Algebra. 23(1) 277-289 (1995)

Fiber Properties as Components of Cotton Yield

National Agricultural Statistics Service Research Report – November 1997

Complex Continued Fractions: An Undergraduate Research Proposal

Missouri Journal of Mathematical Sciences - Fall 1998

Finite Cycles of Certain Periodically Linear Permutations

Missouri Journal of Mathematical Sciences - Fall 1999

Predicting Soybean Weight Per Pod

Proceedings 2001 Kansas State University Conference on Applied Statistics in Agriculture

Combining Correlated Unbiased Estimators of the Mean of a Normal Distribution

(with Ingram Olkin)

Stanford University Technical Report No. 2002-5, March 2002

Presented as an invited paper at the Joint Statistical Meeting in San Francisco, August 2003.

Creating Synthetic Agricultural Data Sets Using Copula Techniques

Proceedings paper presented at the Joint Statistical Meeting in Vancouver, BC

PROFESSIONAL AFFILIATIONS

Member: Mathematical Association of America

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