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Friday, April 13, 2007

Registration and Exhibits      Meredith 201

2:30-5:00   

Concurrent Session 1      Meredith 235

3:00-3:20Strong Signals: L(d,2,1)-Labeling on Simple Graphs
* Jean Clipperton, Simpson College
3:30-3:50On the Weakly Sign Symmetric Matrix Completion Problems
* Jonathan Botts, Drake University

Concurrent Session 2      Meredith 238

3:00-3:20Computer Explorations of Prime Conjectures Made by Marnell
Charles Ashbacher, #none
3:30-3:50Why Do Students Have Textbooks?
Mariah Birgen, Wartburg College

Break       

3:50-4:10   

Concurrent Session 3      Meredith 235

4:10-4:30Sign patterns that allow a positive or nonnegative left inverse
In-Jae Kim, Minnesota State University, Mankato
4:40-5:00Minimum Rank of Powers of Some Special Graphs
Luz De Alba Guerra, Drake University

Concurrent Session 4      Meredith 238

4:10-4:30Ethics and Standards
Henry Walker, Grinnell College
4:40-5:00Optimal arrangement of digits
Ronald Smith, Graceland University

Dinner       

5:00-7:20   

Plenary Session 1      Meredith 101

7:30-7:50Using groups and graphs to create symmetry patterns, Parts 1
Joseph A. Gallian, University of Minnesota, Duluth

Reception      Meridith Lobby 

8:30--   

Saturday, April 14, 2007

Registration and Exhibits      Meredith 201

8:00-11:25   

Plenary Session 2      Meredith 101

8:30-8:50Using groups and graphs to create symmetry patterns, Part 2
Joseph A. Gallian, University of Minnesota, Duluth

Break       

9:30-9:40   

Workshop      Meredith 124 B

9:40-10:00Teaching tools in the MAA digital library
Erick Hofacker, University of Wisconsin - River Falls

Concurrent Session 5      Meredith 234

9:45-10:05Mathematics for Sustainable Living: Pre-Calculus Basics
M Anne Dow, Maharishi University of Management
10:15-10:35The Possible Use of Wavelets in Digital Audio Upsampling
Scott Searcy, Waldorf College

Concurrent Session 6      Meredith 235

9:45-10:05Assimilating Drifter Trajectories using Gradient Descent
Neil Martinsen-Burrell, Wartburg College
10:15-10:35Connected goalies for convex polygons
David Romano, Grinnell College
10:45-11:05How likely is a lattice link?
Dennis Roseman, University of Iowa

Concurrent Session 7      Meredith 238

9:45-10:05On a Group Associated With Projective Planes
** James Fiedler, Iowa State University
10:15-10:35Farey Symbols and subgroups of $SL_2(Z)$
** Chris Kurth, Iowa State University
10:45-11:05An algorithm for creating "equal" regions
Mark Mills, Central College

Iowa MAA Business Meeting      Meredith  101

11:25-12:10   

Lunch       

12:10-1:30   

Concurrent Session 8      Meredith 234

1:35-1:55On the Mathematics of Juggling
Stephen Willson, Iowa State University
2:05-2:25Linear Differential Equations
Wolfgang Kliemann, Iowa State University
2:35-2:55Preferential Attachment Random Graphs with General Weight Function
Krishna B. Athreya, Iowa State University

Concurrent Session 9      Meredith 235

1:35-1:55Geometry for the Artist: A General Education Course
Catherine Gorini, Maharishi University of Management
2:05-2:25The Mean-Median Map
Marc Chamberland, Grinnell College
2:35-2:55Dots and Lines
* Thomas Britton, Coe College

Concurrent Session 10      Meredith 238

1:35-1:55"Hex Play: Do board modifications make a difference in game outcome?"
* Evan Jones, Coe College
2:05-2:25Mathematical Questions from the Classroom
Wendy Weber, Central College
2:35-2:55Overview of the version of Mathematica currently in development
Al Hibbard, Central College

Break       

3:00-3:10   

Concurrent Session 11      Meredith 234

3:10-3:30Counting the number of solutions in a finite group
Siu-Hung (Richard) Ng, Iowa State University
3:40-4:00What I did on my sabbatical: Experiencing the "real world"
Mark Mills, Central College

Concurrent Session 12      Meredith 235

3:10-3:30Historical Roots of Math and Physics in Germany
* Tim Schwickerath, Wartburg College
3:40-4:00An Introduction to Minimum Rank of a Graph
** Rana Mikkelson, Iowa State University

Concurrent Session 13      Meredith 238

3:10-3:30Pseudo-Random Walks
Christian Roettger, Iowa State University
3:40-4:00Using Oral Exams to Help Prepare Future Elementary Mathematics Teachers
Russell Goodman, Central College

* denotes an undergraduate speaker and ** indicates a graduate student speaker