Hindawi, Mathematical Problems in Engineering, (2016), p. 1-3
DOI: 10.1155/2016/2458369
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We sincerely thank the researchers who contributed to this special issue for their inspiring work, as well as the anonymous reviewers for their diligent assistance. In addition, we would like to express our appreciation for the editorial board members of this journal, who provided valuable help and support throughout the preparation of this special issue.