- Feasibility study of Air Traffic Control Towers around the globe: “International research regarding the local influences providing an optimal structural design for air traffic control towers around the globe in an economical perspective”
- Coal transport Kalimantan, research on different alternatives for coal transport in the province of South Kalimantan, Indonesia.
- Water Governance and Policy Networks in Indonesia: The challenges of a decade of water sector reformation
- Geothermal Spa: An attempt to connect social, economic, and environmental solutions for Samosir region in North Sumatra, Indonesia