Please note the unusual day (Wednesday) and time (2:00 p.m.) and location of this seminar.

Seminar Notice
 
Statistical Laboratory
Iowa State University
 
 
DATE AND TIME:  Wednesday, November 16, 2005, 2:00 p.m.
 
PLACE:  1160 Sweeney     
 
SPEAKER:  Zhigang Zhou, Department of Statistics, Iowa State University
 
TITLE: Statistical Methods for Spatial Screening
 
 
ABSTRACT
 
Military bases that have been used for weapons testing and training usually are contaminated with unexploded ordnance (UXO). These sites can be returned to public use only after UXO remediation. The cleaning-up procedure is usually very expensive and time-consuming.  This demands statistical tools to provide more effective sampling survey and to characterize the UXO distribution.  Based on the physical characteristics of UXO deposition, we adopt a simplified Neyman-Scott process to model the UXO distribution. A line transect survey is used to collect data on one coordinate of individual object locations. Estimators of the cluster intensity, mean cluster size and cluster dispersion are provided.  The theoretical variance estimators of all the cluster parameters are also given.  Simulation studies show that all the parameter estimates perform well and their theoretical variance estimates are reasonably close to their corresponding sample variances.
 
COFFEE:  1:40 p.m., 104 Snedecor Hall
 
Seminar schedules and abstracts are available via WWW:  http://www.stat.iastate.edu/

Jeanette La Grange
Department of Statistics
102 Snedecor
Iowa State University
Ames, IA  50010-1210
515 294-3440 (office)
515 294-4040 (fax)
http://www.stat.iastate.edu/directory/staff/jeanette.html