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Submitted on: 28 June 2012.
Revised on: 22 July 2012.
Accepted on: 30 August 2012.
___________________Applied System Innovation---MDPI
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Submitted on: 26 February 2017.
Revised on: 19 May 2017.
Accepted on: 14 July 2017.
___________________Applied System Innovation---MDPI