Submitted on: 26 January 2018.
Revised on: 26 March 2018.
Accepted on: 16 April 2018.
___________________HardwareX---ELSEVIER
Submitted on: 15 March 2006.
Revised on: 16 May 2006.
Accepted on: 12 June 2006.
___________________HardwareX---ELSEVIER
Submitted on: 14 December 2007.
Revised on: 05 January 2008.
Accepted on: 15 January 2008.
___________________HardwareX---ELSEVIER
Submitted on: 10 August 2006.
Revised on: 19 November 2006.
Accepted on: 11 December 2006.
___________________HardwareX---ELSEVIER
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