The ACDA is an online journal which publishes original papers, review papers, conceptual framework, analytical and simulation models, case studies, empirical research, technical notes, and book reviews. This is our pleasure to receive your manuscripts and forward them to evaluation processes within the shortest period. We hope you find the ACDA a good destiny for your scientific findings and encourage your students, colleagues and friends to further cooperate to the ACDA. To submit your manuscript, please register and login yourself at the journal web site, click on the “Author” menu at your homepage and then click on the “Submit a New Manuscript” item and follow the stages ahead. For further queries, please contact the journal.