Procedia - Social and Behavioral Sciences 106 ( 2013 ) 2636 – 2644

1877-0428 © 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license.

Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey.doi: 10.1016/j.sbspro.2013.12.304

ScienceDirectAvailable online at www.sciencedirect.com

© 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license.

Selection and peer-review under responsibility of The Association of Science, Education and Technology-TASET, Sakarya Universitesi, Turkey.

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2644 Rodica Neamtu / Procedia - Social and Behavioral Sciences 106 ( 2013 ) 2636 – 2644