The University of Diponegoro (Undip) recently hosted a session where three prospective professors presented their scientific papers. Organized by the Undip Professor Council on Wednesday, June 21, the candidates include Dr. Sri Hartini, S.T., M.T. (Faculty of Engineering), Dr.Eng. Agus Setyawan, S.Si., M.Si (Faculty of Science and Mathematics), and Dr. Nanik Trihastuti, S.H., M.Hum. (Faculty of Law).
In her presentation on “Lean and Sustainable Manufacturing: Roles and Challenges in Small and Medium Enterprises in Indonesia,” Dr. Sri Hartini addressed the inefficiencies in the production processes of Indonesian companies, emphasizing the need for improvement in waste management, particularly in Small and Medium Enterprises (SMEs). She highlighted the importance of continuous enhancement in efficiency and waste management within the manufacturing systems of Indonesian SMEs. The concept of lean and sustainable manufacturing aims to create value for customers by consistently eliminating waste and adopting environmentally friendly, economically viable, and safe processes to produce green products that enhance social performance. While some integration of these principles has been implemented, it remains partial.
“Lean and sustainable manufacturing can be applied to the food sector of SMEs producing tofu. An evaluation of tofu SMEs indicates wastefulness in movement and defects, physical workload, water consumption, waste, and climate levels exceeding thresholds. The major hindering factors are the high costs of investment, maintenance, and technology, while facing budget limitations. The lack of training and skills, as well as employee education, is evident. The most significant driving factors are financial capability and government support and incentives. A pentahelix collaboration is expected to be an alternative solution for the implementation of lean and sustainable manufacturing in SMEs,” explained Dr. Sri Hartini.
Meanwhile, Dr. Nanik Trihastuti’s scholarly work on “Distant-Water Fishing and its Impact on Developing Countries: An Overview of International Legal Effectiveness” expressed that distant-water fishing activities carried out by many developed countries have negative impacts on developing countries. The massive fishing activities are triggered, among other things, by the fisheries subsidies provided by developed countries to their fleets, which are even equipped with environmentally unfriendly fishing gear.
“A country is considered to have jurisdictional authority under international law if it has the competence to prosecute or punish something or negligence qualified as an offense under the national law of that country. The country is also recognized as having the authority to handle any offense that occurs within the boundaries of its territory regardless of the nationality of the perpetrator. A country’s submission to the needs of international society and compliance with international law is a prerequisite for the creation of an orderly international society and the establishment of international order,” said Dr. Nanik.
In his presentation, Dr. Eng. Agus Setyawan, S.Si., M.Si (FSM) discussed the paper titled “The Role of Earth Physics in the Development of Geothermal Energy and the Environment in Indonesia.” Indonesia is a region traversed by the convergence of three tectonic plate boundaries, namely the Indo-Australian plate, the Eurasian plate, and the Pacific plate. This condition places Indonesia in the ring of fire zone along a 7000 km stretch. The ring of fire zone has both positive and negative consequences. On the positive side, it generates natural resources such as hydrocarbons, mineral mines, and geothermal energy, while on the negative side, it poses natural disaster potentials such as earthquakes, volcanic eruptions, landslides, and land subsidence.
“Gravity measurements reveal that the rocks forming Mount Ungaran consist of andesite with a density of 2.39 kg/m3 related to Young Mount Ungaran and basalt rocks with a density of 2.64 kg/m3 associated with Old Mount Ungaran. The appearance of geothermal manifestations on Mount Ungaran is related to faults. The upflow zone is around the collas wall, where the fluid moves upward but does not penetrate the surface, causing it to descend and emerge on the surface through the fault zone as fumaroles, hot springs, and alteration zones. Through numerical simulation, the potential geothermal capacity in Mount Ungaran ranges from 2.3 MW to 40.4 MW, depending on the assumed reservoir depth,” he explained.
