The author would like to express sincere gratitude to all the authors who submitted their valuable contributions to this special issue, as well as to all the experts who participated in the review process. The authors are also immensely grateful to the Editor-in-Chief Prof. David Walker and the former Editor-in-Chief Prof. Geoffrey C. Fox for providing them this opportunity to present their works in Concurrency and Computation: Practice and Expertise journal and for their support and guidance in preparation the works.
