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

• 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.