Submitted on: 25 April 2010.
Revised on: 01 August 2010.
Accepted on: 31 August 2010.
___________________Journal of Civil Engineering Education
http://reply.papertrans.cn/2/159/15866/15866-22.png
Submitted on: 22 July 2015.
Revised on: 21 September 2015.
Accepted on: 01 November 2015.
___________________Journal of Civil Engineering Education
Submitted on: 19 July 1998.
Revised on: 13 October 1998.
Accepted on: 13 November 1998.
___________________Journal of Civil Engineering Education
http://reply.papertrans.cn/2/159/15866/15866-25.png
http://reply.papertrans.cn/2/159/15866/15866-26.png
Submitted on: 06 October 2017.
Revised on: 04 January 2018.
Accepted on: 27 January 2018.
___________________Journal of Civil Engineering Education
Submitted on: 12 November 2009.
Revised on: 22 February 2010.
Accepted on: 19 April 2010.
___________________Journal of Civil Engineering Education
http://reply.papertrans.cn/2/159/15866/15866-29.png
Submitted on: 31 January 2014.
Revised on: 11 April 2014.
Accepted on: 10 June 2014.
___________________Journal of Civil Engineering Education