This journal applies a structured fee system for authors submitting their manuscripts. The details are as follows:

• Article Publication Fee: A standard charge of USD 50 is required for accepted articles. This fee covers the costs associated with the editorial and peer review process, formatting, online hosting, and long-term archiving.

• Free Article Processing Charge (APC) Eligibility: Articles are eligible for free APC if they meet the following criteria:

  • The submission includes authors affiliated with institutions from at least three different countries, excluding Indonesia.
  • This policy is intended to encourage international collaboration and diverse research contributions across various academic communities.

By implementing this fee structure, the journal ensures high-quality publication standards while promoting global research engagement and accessibility.