Wednesday, February 6, 2013


Join Us for Talk III 

South Dakota's Ground Water

Wednesday, March 20, 2013 at 4:30 pm, Room 107 Lee Med

It’s probably safe to say that many of us take our drinking water for granted. This presentation will show why ground water is important to South Dakota and will briefly examine the major sources of ground water in the state. Some potential sources of ground-water contamination will be mentioned and an example of the vulnerability of one of the state’s major aquifers to contamination will be shown. Lastly, some results of testing from one of the best ambient ground-water quality monitoring networks in the country will be given.


Derric Iles

Derric Iles is the State Geologist and Administrator of the Geological Survey Program, South Dakota Department of Environment and Natural Resources. He has held this position for 15 years and is responsible for the planning and direction of the activities of the Geological Survey Program. He received a B.A. in Geology in 1975 from the University of Northern Iowa and an M.S. in Geology in 1977 from Iowa State University. Previous work experience includes employment with the Geological Survey from 1977-1984 and 1986-1998 as a geologist and hydrologist, and with Twin City Testing Corporation from 1984-1986 as a senior hydrologist/project manager. Mr. Iles is a certified professional geologist and is a member of the American Institute of Professional Geologists, the Association of American State Geologists, and the National Ground Water Association.

Monday, January 21, 2013

Welcome to the USD Chapter of Sigma Xi. We welcome your comments, questions and suggestions for activities, speakers and connections. Watch this blog for upcoming events.


Join Us! 

USD Sigma Xi 2013 Lecture Series

Talk II: Monday, Feb 4, 5 PM Lee Med 105
 Math Emporium at USD: 
Why the Change and How Has It Performed?

Success rates in introductory math courses are of grave concern all across the country.  It is easily the one subject that prevents many students from obtaining a college degree.  In this talk I will discuss a new method of delivery for introductory math courses which has been termed the "Math Emporium" approach and why it has received so much traction across the nation.


Dan Van Peursem came to USD in 1997 after receiving his degree from UNL in applied mathematics.  His thesis area was in analytical modeling of groundwater flows with recirculation wells but he has since been interested in problems in the field of mathematical biology.  He became chair of the Department of Mathematical Sciences in 2004 and is serving in that role.


Thanks to our Fall 2012 Speaker (Talk I)