UNAIR NEWS – Universitas Airlangga (UNAIR) continues to reaffirm its commitment to research and higher education. One of its standout scholars, Karno Dwi Joyoutomo, a fast-track Master’s-Doctoral student in Economics at Faculty of Economics and Business (FEB), graduated with a perfect 4.00 GPA. His dissertation introduced a groundbreaking economic-transport integration model for container transportation across Java Island.
This research is the first of its kind in Indonesia, as it merges two distinct academic disciplines: container transportation and macroeconomics, both in theory and practice. His innovative work earned him a doctorate following a successful dissertation defense on Monday, February 17, 2025.
Exploring economic-transport integration model
Joyoutomo explained that his research focused on calculating and analyzing the most cost-efficient method for container transportation using an integrated economic-transport model. He chose this topic due to the lack of existing studies on integration models in Indonesia.
“Even after reviewing various academic journals, I found it extremely difficult to find relevant literature,” he told UNAIR NEWS. His research marks a significant step forward in developing integrative models within the country.
Employing a quantitative approach, Joyoutomo first constructed a cost-efficiency model using Stochastic Frontier Analysis (SFA) to capture stochastic microeconomic behavior. He then applied linear programming to optimize the model deterministically.
“This was followed by a macroeconomic analysis incorporating factors such as gross value added, inflation, labor productivity, and balance sheet equilibrium,” he explained.
His findings revealed that intermodal transportation methods—such as ships, trucks, and trains—offered significantly greater cost efficiencies. “Conversely, ports, which serve as stationary hubs rather than transport links, could not achieve the same level of efficiency since distance is not a determining factor in their operations,” he elaborated.
Overcoming challenges through dedication
Developing such a complex model posed significant challenges. Joyoutomo admitted that completing his dissertation took approximately 1.5 years. In addition to the limited availability of literature, integrating different sources to build a comprehensive model was a demanding task. “Another major hurdle was gaining access to corporate data, as companies were often unwilling to share information,” he added.
Despite these obstacles, Joyoutomo remained committed to his research, drawing motivation from his family’s support and his passion for academic excellence. “Discipline is crucial to completing your studies. Whether you feel like it or not, the work must be done,” he advised.
Regarding practical implementation, Joyoutomo emphasized the need for strong collaboration among all stakeholders, including business leaders and government agencies, to achieve optimal global outcomes. He also highlighted the importance of transparency through digitalization, which would facilitate more effective monitoring by all parties involved.
His research has the potential to extend beyond container transportation, with applications in other sectors of the transportation industry. Ultimately, Joyoutomo hopes his work will serve as a foundation for future advancements in efficiency and optimization within Indonesia’s transport sector.
Author: Zahwa Sabiila Ilman Ramadhani
Editor: Khefti Al Mawalia
