# Qi Zheng, Ph.D.

## Associate Professor

212 Adriance Lab Rd.

1266 TAMU

College Station, TX 77843-1266

## Research Interests

- Mathematical Modeling of Biological Processes
- Applied Stochastic Processes
- Application of Computer Algebra

### Teaching Interests

- Biostatistics

## Education and Training

Ph.D. Statistics, Texas A&M University, 1993

B.A. Mathematics, Zhejiang University, 1982

### Selected Publications

**Zheng, Q.** and Matis, J.H. (1993). Some applications, properties and conjectures for higher order cumulants of a Markovian stepping-stone model. Communications in Statistics - Theory and Methods, 22:3305-3319.

**Zheng, Q.** and Matis, J.H. (1993). Approximating discrete multivariate distributions from known moments. Communications in Statistics - Theory and Methods, 22:3553-3567.

**Zheng, Q.** and Matis, J.H. (1994). Correlation coefficient revisited, The American Statistician, 48:240-241.

**Zheng, Q.** (1994). On the exact hazard and survival functions of the MVK stochastic carcinogenesis model. Risk Analysis, 14:1081-1084.

Matis, J.H., **Zheng, Q.** and Kiffe, T.R. (1995) Describing the spread of biological populations using stochastic compartmental models with births. Math Biosciences, 126:215-247.

**Zheng, Q.** (1995). On a compartmental analysis result, Math Biosciences, 130:203-206.

**Zheng, Q.** (1995). On the MVK stochastic carcinogenesis model with Erlang distributed cell life lengths. Risk Analysis, 15:495-502.

**Zheng, Q.** (1995). A note on an approximation to Neyman type A distributions. Communications in Statistics Simulation and Computation, 24:889-895.

Gaylor, D.W. and **Zheng, Q.** (1996). Risk assessment of nongenotoxic carcinogens based upon cell proliferation/death rates in rodents, Risk Analysis, 16:221-225.

Gaylor, D.W. and **Zheng, Q.** (1997). A note on the relationship between lifetime tumor risk and expected time to tumor, Risk Analysis, 17:5-7.

**Zheng, Q.** Lutz, W.K. and Gaylor, D.W. (1997). A carcinogenesis model describing mutational events at the DNA adduct level, Math Biosciences, 144:23-44.

**Zheng, Q.** (1997). A unified approach to a class of stochastic carcinogenesis models, Risk Analysis, 17:617-624.

**Zheng, Q.** (1997). On a birth-and-death process induced distribution, Biometrical Journal, 39:699-705.

**Zheng, Q.** (1997). Remarks on a model of labeling indices, Carcinogenesis, 18:2461-2462.

**Zheng, Q.** (1997). Exploring physiologically based pharmacokinetic models, Mathematica in Education and Research, Vol. 6 No. 2 pp.22-28.

**Zheng, Q.** (1998). To use or not to use? Backward equations in stochastic carcinogenesis models, Biometrics, 54:384-388.

**Zheng, Q.** (1998). On a trinity role of the survival and hazard functions of the two-stage carcinogenesis models, Communications in Statistics - Simulation and Computation, 27:137-145.

**Zheng, Q.** (1998). Note on the nonhomogeneous Prendiville process, Mathematical Biosciences, 148:1-5.

**Zheng, Q.** (1998). A stochastic two-phase growth model, Bulletin of Mathematical Biology, 60:151-161.

**Zheng, Q.** (1998). Computer algebra is indispensable in some problems of mathematical biology, Math. Biosci., 151:219-225.

J.B. LaBorde, K.S. Wall, B. Bolon, T.S. Kumpe, R. Patton, **Q. Zheng**, R. Kodell and J.F. Young (1999). Haematology and serum chemistry parameters of the pregnant rat, Laboratory Animals, 33:275-287.

**Zheng, Q.** (1999). Comments on the hazard functions of a two-stage carcinogenesis model, Radiation Research, 151:120.

**Zheng, Q.** (1999). Solution to the hazard function of some two-stage carcinogenesis models when normal cell growth is piecewise linear, Communications in Statistics, Theory and Methods, 28(8):1921-1929.

**Zheng, Q.** (1999). Progress of a half century in the study of the Luria-Delbr¨uck distribution, Mathematical Biosciences 162:1-32.

R.L. Kodell, J.F. Young, R.R. Delongchamp, A. Turturro, J.J. Chen, D.W. Gaylor, P.C. Howard and **Q. Zheng,** (2001). A mechanistic approach to modeling the risk of liver tumors in mice exposed to fumonisin B1 in the diet, Food Additives and Contaminants, 18:237-253.

**Q. Zheng**, (2001). On the dispersion index of a Markovian molecular clock, Mathematical Biosciences, 172:115-128.

**Zheng, Q.** (2002). Statistical and algorithmic methods for fluctuation analysis with SALVADOR as an implementation, Mathematical Biosciences, 176:237-252.

**Zheng, Q.** (2002). Computing relations between moments and cumulants, Computational Statistics, 17:507-515.

**Zheng, Q.** (2003). Mathematical issues arising from the directed mutation controversy, Genetics, 164:373-379.

**Zheng, Q.** (2005). New algorithms for Luria-Delbr¨uck fluctuation analysis, Mathematical Biosciences, Mathematical Biosciences, 196:198-214.

**Zheng, Q.** (2005). Update on estimation of mutation rates using data from fluctuation experiments, Genetics, 171:861-864.

P. Singh, B. Camazine, Y. Jadhav, R. Gupta, P. Mukhopadhyay, A. Khan, R. Reddy, **Q. Zheng**, D. Smith, R. Khode, B. Bhatt, S. Bhat, Y. Yaqub, R.S. Shah, A. Sharma, P. Sikka, R.A. Erickson, (2007) Endoscopy ultrasound as a first test for diagnosis and staging of lung cancer: a prospective study, American Journal of Respiratory and Critical Care Medicine, 175:345-354.

**Zheng, Q.** (2007) On Haldane's formulation of Luria and Delbr¨uck's mutation model, Mathematical Biosciences, in press.