Preliminary results of a University of Arkansas study for Wal-Mart Stores Inc. showed that the use of RFID technology reduced out-of-stocks by 26 percent. The RFID Research Center, a subunit of the Information Technology Research Institute in the University of Arkansas' Sam M. Walton College of Business, has released a preliminary analysis of the capability of RFID (radio frequency identification) to reduce stock outs on the retail shelf.