Abstract #300824

This is the preliminary program for the 2003 Joint Statistical Meetings in San Francisco, California. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 2-5, 2003); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

To View the Program:
You may choose to view all activities of the program or just parts of it at any one time. All activities are arranged by date and time.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2003 Program page
JSM 2003 Abstract #300824
Activity Number: 66
Type: Invited
Date/Time: Monday, August 4, 2003 : 8:30 AM to 10:20 AM
Sponsor: ENAR
Abstract - #300824
Title: Spatio-Temporal Repeated Measures of Lengthening Curves and Expanding Shapes and the Complexity Analysis of Plant Structures Using a CT Scanner
Author(s): Pierre R. L. Dutilleul*+
Companies: McGill University, Macdonald Campus
Address: Dept. of Plant Science, Faculty of Agri.& Environ. Sci., Ste-Anne-de Bellevue, PQ, H9X 3V9, Canada
Keywords: CT scanning ; fractal geometry ; plant structures ; repeated measures ; space-time
Abstract:

Computed tomography (CT) scanning is a most adequate nondestructive technology for investigating the internal structure of a large category of objects. Medical applications are well known. Environmental applications are being developed. The CT Scanning Laboratory for agricultural and environmental research at Macdonald Campus of McGill University is one of a few research facilities of this type in North America. Its use to study plant structures under stress conditions as well as in root growth promoting conditions is particularly original. Our helical CT scanner allows almost perfect construction of 3-D images of branching patterns and root systems of the same plant at different stages of development. These spatio-temporal repeated measures of a special kind prevent the use of classical statistical methods for their analysis. In a first step, the fractal dimension estimate was used as a summary statistic of structural complexity. The nature of CT scanning data, their treatment before actual statistical analysis and preliminary results will be presented and discussed. Discussion will include a comparison with former results obtained with 2-D photographs of branching patterns.

  • The address information is for the authors that have a + after their name.
  • Authors who are presenting talks have a * after their name.

Back to the full JSM 2003 program

JSM 2003 For information, contact meetings@amstat.org or phone (703) 684-1221. If you have questions about the Continuing Education program, please contact the Education Department.
Revised March 2003