Grant Thrall Consulting

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We offer a synthesis of ecades of real estate analysis, development and investment experience.

Dr. Grant Thrall
Dr. Thrall is the leading figure in the new school of business geography practice and thought. In 2002 he published his highly acclaimed path-breaking book Business Geography and New Real Estate Market Analysis with Oxford University Press. He has written or edited over a dozen books, and over 150 professional articles. For over a decade he has been a consultant with PriceWaterhouseCoopers, and has twenty years experience consulting with his own firm, Thrall Consulting. He is a Professor at University of Florida, a member of the Board of Directors of the American Real Estate Society, a Weimer Fellow of the Homer Hoyt Institute, a member of the academic board of the Appraisal Institute’s Appraisal Journal, co-editor of the Journal of Real Estate Literature, and business geography, software and data editor for the leading GIS professional magazine GeoSpatial Solutions. Dr. Thrall has a Ph.D. in Geography and Economics, and an MA in Economics from The Ohio State University.

Dr. Susan Thrall
Dr. Susan Thrall has over fifteen years of experience of custom software development, database application, and geographic information systems. Susan Elshaw Thrall has her PhD (1988) in Geographic Information Systems (GIS) and Computer Sciences Applications from University of Florida located in Gainesville Florida. She specializes in custom software design and programming Microsoft Windows software applications. Among the languages she routinely programs in are Microsoft Visual Basic, Pascal, COBOL, C, and FORTRAN. She also has a wide range of experience in related software development environments, including GIS applications. Her GIS experience also includes having programmed her own raster based GIS, as well as the design and implimentation of GIS applications using various GIS OCXs.

Dr. Thrall holds CCNA and CCNAI certificates. CISCO Certified Network Administrator and CCNA Instructor.

Dr. Susan Thrall's own raster based GIS was used as backends for several custom GIS consulting projects. For example, for Gainesville Regional Utilities she used her raster GIS transportation analysis routine to solve for the best location for GRU to build satellite facilities. GRU has thus far used her "expert system GIS" to make decisions on $2.5 million of property. She has implemented many computer analyses including forecasting urban land use and having invented proprietary algorithms for georeferencing databases and importing tax appraisal data files into GIS applications. Feature articles have been written on her work by American Demographics Magazine. Dr. Susan Thrall is Professor of Computer Science at a state supported college in North Central Florida, where her experience includes having taught most computer languages and a variety of GIS and related computer graphics and data management development programs. She is a partner in Thrall Consulting.

A short list of Dr. Susan Thrall's publications include:

  • "MapPoint and Maptitude, Destinations Known" Geo Info Systems, vol. 10, number 5, May, 2000
  • "Desktop GIS" Chapter 23, vol. 1. in P A Longley , M F Goodchild, D J Maguire, D W Rhind (Eds). 1998. Geographical Information Systems: Principles, Techniques, Management And Applications. New York, Wiley.
  • "A GIS Study of 90 Years of Urban Growth" Geo Info Systems, April, 1995; "
  • Business GIS Data, Part Five: Linking Attribute Data to Map Objects" Geo Info Systems, May, 1994;
  • "Business GIS Data, Part Three: Zip Plus 4 Geocoding" Geo Info Systems, January, 1994;
  • "Business GIS Data, Part Two: High-end TIGER/Line" Geo Info Systems, October 1993;
  • "Commercial Data Bases For Business GIS" Geo Info Systems, July/August 1993;
  • "The Cascade GIS Diffusion Model for Measuring Housing Absorption by Small Area with a Case Study of St. Lucie County, Florida" Journal of Real Estate Research, vol. 8, no. 3, 1993;
  • "Using GIS Tools to Analyze and Visualize Spatial Phenomena"Geo Info Systems May 1993;
  • "Design of a GIS Property Tax Assessment Database With an Example From St. Lucie County Florida". Geo Info Systems, Nov. 1991;
  • "A Computer Assisted Decision Strategy For Evaluating Satellite Hub Sites For a Local Utility Provider". Computers, Environment, and Urban Systems, vol. 14, 37-48.


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