The Editorial Board is pleased to announce a new Article Processing Charge (APC) Policy, applicable to all manuscripts submitted on or after January 1, 2027.

This policy aims to strengthen international academic collaboration, promote high-quality research publications, and enhance the journal's global visibility and scholarly impact.

1. Manuscripts Involving Indonesian Authors

For manuscripts involving one or more authors from Indonesia, the following APC policies apply:

• 100% APC Waiver (Free Publication): Manuscripts involving at least one international co-author (from outside Indonesia) with an H-index greater than 5 are eligible for a full APC waiver.

• 50% APC Discount: Manuscripts involving at least one international co-author (from outside Indonesia) with an H-index below 5 are eligible for a 50% reduction in the applicable APC.

2. Manuscripts Authored Exclusively by International Authors

Manuscripts submitted by authors from outside Indonesia, without any Indonesian co-authors, will continue to receive a 100% APC waiver (Free Publication), regardless of the authors' H-index.

3. Effective Date

This policy applies exclusively to manuscripts submitted on or after January 1, 2027. Manuscripts submitted before this date will remain subject to the previous APC policy.

The Editorial Board remains committed to supporting international scholarly collaboration and providing an inclusive platform for disseminating high-quality research.

We sincerely appreciate the continued interest, trust, and contributions of all authors to our journal.

Editorial Board