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All Journal SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL Ilomata International Journal of Management Skyhawk: Jurnal Aviasi Indonesia Journal of Science Technology (JoSTec) Journal of Accounting and Finance Management (JAFM) Sinergi International Journal of Logistics Logistica : Journal of Logistic and Transportation
Untung Lestari Nur Wibowo
Akademi Penerbang Indonesia Banyuwangi
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Social Sciences Transportation Other

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Impact of the fuel mixture ratio of AVGAS 100LL and RON 92 fuel on combustion characteristics Sabam Danny Sulung; Daniel Dewantoro Rumani; Ikhwanul Qiram; Muhammad Nur Cahyo Hidayat Nasrullah; Untung Lestari Nur Wibowo
Journal of Science Technology (JoSTec) Vol. 5 No. 1 (2023): Journal of Science Technology (JoSTec)
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/jostec.v5i1.478

Abstract

AVGAS 100LL is an aviation fuel used in piston engine aircraft, particularly in training aircraft such as the Cessna 172S with Lycoming engines. The use of lead in this fuel can have various health-related concerns. Therefore, reducing the use of leaded fuel has become a solution to address these issues. This study aimed to investigate the combustion characteristics of AVGAS fuels, including AVGAS 100%, AVGAS 75% + PERTAMAX 25%, and AVGAS 50% + PERTAMAX 50%. The research involved conducting combustion tests using a Bunsen burner. The results showed that the addition of PERTAMAX to AVGAS significantly influenced the temperature, color, flame height, and flame area produced. The temperature values were higher for AVGAS 100% compared to AVGAS mixed with PERTAMAX. On the other hand, the flame height and flame area were lower for AVGAS 100% compared to the blended fuels. These findings indicate that the addition of PERTAMAX affects the combustion characteristics of AVGAS fuels. Further studies are recommended to explore and expand our understanding of the effects of blending AVGAS with alternative fuels.
Pengaruh Stres Terhadap Taruna Penerbang Sayap Tetap Dalam Menghadapi Fase Pre-Solo Flight Di API Banyuwangi FAJAR ISLAM; sabam Danny Sulung; Untung Lestari Nur Wibowo; Yovita Sheila Nabila
SKYHAWK : Jurnal Aviasi Indonesia Vol. 4 No. 2 (2024): SKYHAWK: Jurnal Aviasi Indonesia
Publisher : Indonesia Civil Pilot Academy Banyuwagi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52074/skyhawk.v4i2.258

Abstract

Fase pre-solo flight merupakan tahap penting dimana taruna dilatih untuk mendapatkan izin terbang solo. Tetapi tidak semua taruna dapat menjalankan praktik terbang sesuai dengan yang diinginkannya. Stres diketahui merupakan salah satu penyebab yang mungkin mempengaruhi pembelajaran dan performa terbang taruna. Dalam penelitian ini, peneliti memutuskan untuk meneliti apakah benar stres merupakan hal yang mempengaruhi taruna saat menghadapi fase terbang pre-solo di Akademi Penerbang Indonesia Banyuwangi. Peneliti melakukan penelitian ini bertujuan untuk mengetahui penyebab dan juga cara meminimalisir stres yang dialami taruna selama fase pre-solo flight. Penelitian ini menggunakan desain penelitian deskriptif kualitatif yang menggunakan teknik pengumpulan data melalui observasi dan wawancara. Wawancara dilakukan kepada 17 orang taruna penerbang di Akademi Penerbang Indonesia Banyuwangi. Dari hasil wawancara yang diperoleh menunjukkan bahwa taruna penerbang sayap tetap sebagian besar mengalami stres dan berdampak kepada performa terbang pre-solo seperti menurunkan fokus, menurunkan tingkat kewaspadaan dan mempengaruhi cara taruna mengambil keputusan saat terbang. Oleh karena itu hal ini perlu untuk dipelajari dan dikelola dengan baik. Cara beberapa taruna untuk menghadapi stres yang dialaminya seperti dengan persiapan terbang yang lebih matang, beristirahat yang cukup dan juga beribadah. Hasil penelitian ini dapat memberikan pemahaman yang lebih baik tentang dampak stres pada taruna penerbang dan memberikan saran untuk mengembangkan pembelajaran yang lebih baik di Akademi Penerbang Indonesia Banyuwangi.
Unlocking Renewable Potential in Logistics Hubs: Policy Frameworks for Inclusive Energy Transitions Loso udijanto; Untung Lestari Nur Wibowo; Dimas Endrawan Putra
Logistica : Journal of Logistic and Transportation Vol. 3 No. 3 (2025): July 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/logistica.v3i3.1148

Abstract

Logistics hubs play a vital role in global decarbonization due to their high energy use and strategic position within supply chains, yet they are often excluded from national renewable energy policies. This exclusion limits their potential to become active clean energy producers. This study examines the regulatory and institutional barriers that hinder renewable energy integration in logistics hubs and proposes an inclusive policy roadmap tailored for this sector—offering a novel contribution beyond prior studies focused on residential and industrial contexts. Using a comparative methodology, the research analyzes energy regulatory frameworks across Germany, Brazil, the UAE, Indonesia, and the United States. Data were collected from government reports, institutional documents, and peer-reviewed studies. A hybrid analytical framework combining stakeholder mapping and policy categorization was employed to identify existing gaps and opportunities. The findings show that logistics hubs are frequently excluded from mechanisms such as net metering, feed-in tariffs, and tax incentives due to outdated classifications that overlook their dual industrial-service roles. Case studies from Germany, Brazil, and the UAE highlight the effectiveness of targeted measures like grid fast-tracking, specific subsidies, and integrated municipal approaches in advancing renewable adoption. Furthermore, strong public-private partnerships and dynamic pricing systems are key to aligning logistics operations with renewable goals. The study concludes that infrastructure development must be complemented by policy innovation through harmonized, inclusive, and multi-level governance to embed logistics hubs effectively in renewable energy strategies.
Understanding Port Operators' Perceptions of Operational Efficiency: A Qualitative Study of Indonesian Container Ports Untung Lestari Nur Wibowo
Sinergi International Journal of Logistics Vol. 3 No. 4 (2025): November 2025
Publisher : Yayasan Sinergi Kawula Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61194/sijl.v3i4.1135

Abstract

Container ports are strategically vital to international trade and national logistics, making operational efficiency essential for competitiveness. While prior research has largely measured efficiency through quantitative methods, limited attention has been given to how frontline practitioners perceive and achieve efficiency in daily operations. This study explores port operators' perceptions of operational efficiency, its facilitating factors, barriers, and improvement strategies in Indonesian container ports. A qualitative interpretivist approach was used, involving semi-structured interviews with twelve experienced port operators selected purposively and analyzed through thematic analysis. Findings show operational efficiency is perceived as a multidimensional capability involving vessel services, resource utilization, berth/yard management, equipment reliability, stakeholder coordination, and digital systems. Key drivers include cross-agency coordination, skilled human resources, accurate planning, and digital technologies (Port Community Systems, Terminal Operating Systems, Smart Port initiatives). Barriers include yard congestion, limited berth capacity, equipment failures, and fragmented digital platforms. The study concludes that sustainable efficiency requires integrated coordination, governance, digital integration, and stakeholder collaboration, offering practical insights for Smart Port implementation.
Understanding Stakeholder Coordination in Maritime Logistics: A Qualitative Multiple Case Study of Makassar Port, Indonesia Untung Lestari Nur Wibowo; Muhammad Wahyuilahi
Sinergi International Journal of Logistics Vol. 3 No. 4 (2025): November 2025
Publisher : Yayasan Sinergi Kawula Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61194/sijl.v3i4.1137

Abstract

Maritime logistics plays a strategic role in international trade by integrating organizations responsible for vessel operations, cargo handling, customs clearance, inland transportation, and information management. As port operations grow more complex, effective stakeholder coordination has become essential for operational efficiency and supply chain performance. However, qualitative evidence on how coordination operates within emerging-economy ports, particularly Indonesia, remains limited. This study examines coordination practices among maritime logistics stakeholders at Makassar Port, identifies facilitating and constraining factors, and develops a conceptual understanding of stakeholder coordination. A qualitative multiple case study was conducted at Makassar Port between March and June 2025, using semi-structured interviews with eleven purposively selected stakeholders spanning the Port Authority, terminal operator, shipping company, freight forwarder, trucking company, customs office, and other agencies, supplemented by observations and document analysis, and analyzed through thematic coding. Findings show coordination as a multidimensional process combining formal governance, digital systems, and interpersonal collaboration. Communication, trust, real-time information sharing, and digital integration facilitate coordination, while schedule disruptions, congestion, fragmented systems, and regulatory complexity constrain it. Proposed strategies include strengthening the Port Community System, improving platform interoperability, and building stakeholder capacity. The study concludes that coordination is a strategic capability shaped by technology, relationships, and governance, offering theoretical and practical implications for Indonesian maritime logistics systems.
Digital Transformation and Operational Performance in Indonesian Port Logistics: A Qualitative Multiple-Case Study Untung Lestari Nur Wibowo; Quirina Ariantji Patrisia Mintje
Logistica : Journal of Logistic and Transportation Vol. 4 No. 1 (2026): January 2026
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/logistica.v4i1.1737

Abstract

Digital transformation is a strategic priority for improving efficiency, transparency, and competitiveness in port logistics, yet empirical evidence on how digital technologies enhance operational performance across various port actors remains limited. This study examines digital technology implementation in Indonesian port logistics, identifies operational opportunities generated by digital transformation, and analyzes how these technologies improve operational performance. A qualitative multiple-case study design involved nine key stakeholders—port authorities, terminal operators, IT management, customs, shipping companies, freight forwarders, operational personnel, academia, and regulators. Data were collected through semi-structured interviews and documentary evidence, analyzed using thematic analysis. Findings show Indonesian ports have implemented an integrated digital portfolio—Port Community System, Terminal Operating System, EDI, IoT, automated gates, RFID, container tracking, digital payments, and AI-based predictive analytics—significantly enhancing real-time information exchange, cargo visibility, coordination, and data-driven decision-making. Participants reported improvements in vessel turnaround, crane productivity, container handling, customs clearance, truck turnaround, logistics lead time, and customer service. Performance gains depend not only on technology adoption but also on interoperability, standardized data governance, organizational readiness, workforce capability, cybersecurity, and stakeholder collaboration. However, variations in digital maturity, legacy systems, and institutional coordination continue to limit fully integrated smart-port ecosystems. The study concludes that digital transformation serves as a strategic enabler of operational excellence when integrated with organizational processes and collaborative governance, offering practical guidance for accelerating smart-port development in Indonesia.
Port Electrification, Operational Efficiency, and Carbon-Emission Reduction: A Panel Study of Indonesian Port Operations Dwi Prastiyo hadi; Ahnis Zulkarnain; Untung Lestari Nur Wibowo
Logistica : Journal of Logistic and Transportation Vol. 3 No. 4 (2025): October 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/logistica.v3i4.1738

Abstract

Ports play a strategic role in maritime logistics but also contribute substantially to carbon emissions through cargo-handling equipment, terminal electricity consumption, vessel berthing activities, and landside transport operations. This study aims to examine the effects of equipment electrification, shore-power availability, renewable-electricity utilization, digitalization, and operational efficiency on carbon-emission intensity in Indonesian port operations while evaluating the potential of integrated green-port strategies for emission reduction. The study employs a quantitative panel-data approach using a balanced dataset of 32 port-year observations from eight major Indonesian ports covering the 2021–2024 period. Total operational emissions are estimated from diesel consumption, electricity use, and vessel-hotelling activities, while carbon-emission intensity is measured as tonnes of carbon dioxide per 1,000 throughput units. Panel-regression analysis is specified to evaluate the relationships between technological and operational variables and emission intensity, complemented by policy-scenario simulations assessing the effects of equipment electrification, shore power, renewable electricity, digital operational optimization, and an integrated green-port package. The results indicate that average operational emissions declined from 12,612.66 tCO₂ in 2021 to 6,790.22 tCO₂ in 2024, representing a 46.16% reduction. Carbon-emission intensity decreased from 17.09 to 8.53 tCO₂ per 1,000 throughput units, equivalent to a 50.09% improvement in environmental efficiency. During the same period, equipment electrification increased from 9.18% to 48.80%, while average vessel berth time declined from 42.13 to 29.68 hours. The average Green Port Index reached 55.93 in 2024, indicating a medium-to-high level of sustainability transformation. Scenario analysis suggests that additional equipment electrification could reduce operational emissions by approximately 18%, universal shore power by 9%, renewable electricity by 7%, and digital operational optimization by 8%. When implemented simultaneously, the integrated green-port package is estimated to reduce operational emissions by approximately 36.1%, demonstrating that coordinated technological and operational interventions generate greater environmental benefits than isolated measures. The study concludes that successful port decarbonization requires the integration of clean technologies, low-carbon electricity, operational digitalization, and efficiency improvements rather than reliance on a single mitigation strategy. The proposed panel-data framework and Green Port Index provide practical tools for evaluating port sustainability and supporting evidence-based policy development. These findings contribute to the growing literature on sustainable maritime logistics and offer policy guidance for accelerating the transition toward low-carbon port operations in Indonesia and comparable emerging maritime economies.
Exploring Green Logistics Adoption among Indonesian SMEs: Drivers, Barriers, and Stakeholder Perspectives Dwi Prastiyo Hadi; Aryan Eka Prastya Nugraha; Ahmad Hariri; Untung Lestari Nur Wibowo
Logistica : Journal of Logistic and Transportation Vol. 4 No. 2 (2026): April 2026
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/logistica.v4i2.1744

Abstract

This study examines the drivers and barriers of green logistics adoption among Indonesian SMEs, along with their adaptation strategies and the role of stakeholders in supporting implementation. Using a qualitative single-case study design in Surabaya, East Java, data were collected in March 2025 through semi-structured interviews with nine informants (SME owners, logistics practitioners, a government official, an academic, and a customer), supplemented by observation and document review, and analyzed thematically. The findings show that green logistics adoption is driven by customer demand, competitive pressure, managerial commitment, environmental awareness, operational efficiency, and government encouragement. However, SMEs still face significant barriers, including high implementation costs, limited financial resources, inadequate technical knowledge, restricted access to green suppliers, limited availability of green technologies, and organizational resistance to change. Rather than adopting comprehensive technological solutions, SMEs tend to implement gradual adaptation strategies aligned with their resource capacity. Collaboration among government agencies, logistics providers, universities, customers, and business partners proves essential in supporting knowledge transfer and sustainable logistics implementation. The study concludes that successful green logistics adoption requires integrating organizational commitment, operational efficiency, stakeholder collaboration, and supportive public policies to accelerate the transition toward more environmentally responsible logistics practices.
Co-Authors A. Irland Patappuri Agung Wahyu Wicaksono Ahmad Hariri Ahmad Hariri Ahmad Mubarok Alfiani Zhafira Aras Arief Rusdiansyah Arief Rusdyansyah Aryan Eka Prastya Nugraha, Aryan Eka Prastya Cris Kuntadi Daniel Dewantoro Rumani Dimas Endrawan Putra Dwi Prastiyo Hadi, Dwi Prastiyo Fajar Islam Ikhwanul Qiram Ikhwanul Qiram iswahyudi, Prasetyo Loso udijanto M. Akbar Fathafirza Marsel Rionaldo Lubis Muhammad Nur Cahyo Hidayat Nasrullah Muhammad Wahyuilahi Putra Wicaksono Quirina Ariantji Patrisia Mintje Rafif Pamandu Rangga Handhika Putra Rifki Arif Sabam Danny Sulung Sabam Dany Sulung Suherman Suherman Suherman Verrel Anthareza Yovita Sheila Nabila Zulkarnain, Ahnis