June 11, 2025 – The Department of Mathematics FMIPA UGM once again organized Demomatika, a scientific discussion forum routinely conducted to discuss the development and application of mathematics across various fields. In this 9th edition, Demomatika raised the theme “Bridging Mathematical Analysis and Real-World Applications: Theory, Modeling, and Data.” The event took place in a hybrid format: offline in the 1st Conference Room on the 3rd Floor of the Department of Mathematics FMIPA UGM and online via Zoom Meeting, on Wednesday, June 11, 2025, from 09.30 to 12.30 WIB.
This scientific discussion was attended by students, lecturers, and members of the general public who have an interest in the development of mathematical analysis and its applications in real life.
Two main speakers were present to share insights in their respective fields of expertise. The first speaker, Made Benny P. W., S.Si., M.Sc., a lecturer in Mathematics at FMIPA UGM who is currently pursuing doctoral studies at the Okinawa Institute of Science and Technology (OIST), delivered a presentation titled “Monge Solutions of Time-dependent Hamilton-Jacobi Equations in Metric Spaces.” In his presentation, Benny reviewed Hamilton-Jacobi theory, the concept of viscosity solutions in metric spaces, Monge solutions for eikonal-type equations, superlinear Hamiltonians, equivalence results, and future research projections. This session was followed by an interactive discussion and Q&A moderated by Utti Marina Rifanti, S.Si., M.Sc.
The second speaker, Dr. Kustiyo, a researcher at the Geoinformatics Research Center, National Research and Innovation Agency (BRIN), delivered a presentation titled “Mathematical Modeling for Rice Monitoring Using Multi-spectral, Spatial, and Temporal Remote Sensing Data.” With more than 30 years of experience in remote sensing, Dr. Kustiyo explained the rice crop monitoring system (Simotandi), remote sensing data processing, and its applications in the agricultural sector—particularly in rice—both analytically and through a machine learning approach. He also highlighted various challenges in integrating these technologies into modern agricultural systems. Participants enthusiastically engaged in the session, asking various thought-provoking questions during the discussion.
Through this activity, the Department of Mathematics UGM hopes to bridge mathematical theory with real applications in everyday life, as well as broaden the horizons of the academic community and the public regarding the use of mathematics in various fields.
Keywords: Demomatika, Data Modeling, Remote Sensing
Author: Iin Nauli Rahmawati
Photographer: Muhammad Fakhri Zain Pribadi