Vol. 30 No. 3 (2026)

Articles

• Blade curvature as a key driver of conical-basin gravitational vortex turbine performance: experimental evidence

  Andianto Pintoro, Himsar Ambarita, Farel Hasiholan Napitupulu, Tulus Burhanuddin Sitorus, Taufiq Bin Nur, Ilmi Abdullah, Rimbawati Rimbawati

  671-686

• Hybrid KMeans–HDBSCAN clustering of Construction Cost Index dynamics for adaptive infrastructure planning in Indonesia

  Eddy Suprihadi, Sri Hastutik

  687-706

• Spatial optimization of human-activity energy harvesting potential using Space Syntax in campus buildings

  Marzuki Zulkarnain, Ridwan Sanjaya, Antonius Ardiyanto

  707-716

• Statistically validated comparative evaluation of fiducial markers for vision-based UAV precision landing in standardized PX4–ROS simulation

  Anan Nugroho, Muhammad Ghulamzaki, Feddy Setio Pribadi, Khoirudin Fathoni, Dhidik Prastiyanto, Mona Subagja, Raihan Fa’iq Mubarak

  717-730

• Influence of inorganic content on hydrochar quality from high-ash agar extraction waste via hydrothermal carbonization

  Andi Firdaus Sudarma, Edy Hartulistiyoso, Yohanes Aris Purwanto, Leopold Oscar Nelwan, Obie Farobie, Nono Darsono, Khuzaimah Arifin, Maharani Dewi Solikhah, Tri Yulni, Imam Hidayat, Muhamad Fitri, Edy Herianto Majlan

  731-746

• Detection methods for asphalt and wax deposition in crude oil pipelines: a systematic review

  Hamdani Wahab, Asral Asral, Awaludin Martin

  765-792

• The role of ISO 31000 risk management in enhancing HSE and project performance: evidence from oil and gas construction projects

  Maria Istiqoma, Abraham Lomi, Lies Kurniawati Wulandari, Hani Zulfia Zahro, Maranatha Wijayaningtyas

  793-804

• Stage-dependent sensitivity analysis of composite floor systems under Eurocode provisions

  Riza Suwondo, Made Suangga, Militia Keintjem, Mohammed Altaee

  805-814

• Co-designing neuro-inclusive public interiors: a mixed-methods study on non-visible disabilities in Indonesia

  Rachmita Maun Harahap, Andjar Widajanti, Mira Zulia Suriastuti

  815-826