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All Journal Jurnal Teknik Industri Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal technoscientia REKAYASA Jurnal Teknobisnis Hasanuddin Economics and Business Review Network Engineering Research Operation [NERO] Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri ASRO JOURNAL - STTAL STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE IJEBD (International Journal Of Entrepreneurship And Business Development) Bisma: Jurnal Bisnis dan Manajemen Business and Finance Journal Matrik : Jurnal Manajemen dan Teknik Industri Produksi JURNAL TEKNOLOGI TECHNOSCIENTIA Economics and Digital Business Review Interdisciplinary Social Studies Journal Research of Social Science, Economics, and Management IJESPG (International Journal of Engineering, Economic, Social Politic and Government) journal Sewagati El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Journal of Ekonomics, Finance, and Management Studies
Udisubakti Ciptomulyono
Departemen Teknik Dan Sistem Industri Institut Teknologi Sepuluh Nopember
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Service Quality Improvement for Radio Frequency Spectrum Usage Monitoring at Balai Monitor Class I Surabaya Using SERVQUAL and AHP Methods Novitasari, Dyah; Ciptomulyono, Udisubakti
Journal Research of Social Science, Economics, and Management Vol. 5 No. 1 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v5i1.972

Abstract

Technological advancements have increased quality demands for frequency spectrum monitoring services. Balmon Surabaya, a UPT under Permenkominfo No. 1 of 2022, supervises the radio frequency spectrum in East Java. However, challenges such as declining monitoring results, numerous complaints, and ineffective disturbance handling have emerged. This study evaluates service quality gaps and proposes improvement strategies for radio frequency spectrum monitoring at Balai Monitor Class I Surabaya using integrated SERVQUAL and AHP methodologies. A quantitative survey collected data from 81 non-major user service recipients through structured questionnaires covering five service dimensions: tangibles, reliability, responsiveness, assurance, and empathy. Data analysis employed SERVQUAL gap analysis, Importance-Performance Analysis (IPA), and Analytical Hierarchy Process (AHP), integrated via Quality Function Deployment (QFD). Results revealed negative gaps between user perceptions and expectations across all dimensions, notably tangibles (-0.60), responsiveness (-0.60), reliability (-0.56), and assurance (-0.52). IPA identified six critical attributes in Quadrant I needing urgent attention. AHP prioritized these, with “information on disturbance handling timing” receiving the highest weight (41%). The study recommends five priorities for improvement: enhancing digital and interactive service media; strengthening monitoring and maintenance infrastructure; finalizing operational standards for procedures and service times; digitizing complaint systems with automatic progress updates; and visualizing disturbance handling progress on the user dashboard. These findings provide practical guidance to improve public service quality in frequency spectrum management, supporting more effective wireless communication supervision and lowering interference incidents in East Java.
Process Improvement of Rotary Kiln (RK) Technology with Electric ARC Furnace (EAF) at PT Sebuku Iron Lateritic Ores Using a Technometric Approach Srihandoko, Koko; Ciptomulyono, Udisubakti; Wijayaningtyas, Maranatha
Journal Research of Social Science, Economics, and Management Vol. 5 No. 1 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v5i1.1004

Abstract

This study aims to assess the contribution of RK and EAF technologies using a technometric approach, focusing on four technological components: Technoware, Humanware, Inforware, and Orgaware (THIO). Furthermore, the study analyzes the economic feasibility of both systems using financial indicators and sensitivity risk analysis. The methodology includes calculating the Technology Contribution Coefficient (TCC) for each technology based on the degree of sophistication, state of the art, and intensity of use. Additionally, the economic analysis employs indicators such as Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (B/C Ratio), and Payback Period, along with sensitivity analysis on cost and interest rate variables. The results show that both technologies fall into the semi-modern category, with TCC values of 0.7588 for RK and 0.7563 for EAF. However, Humanware in RK and Inforware in EAF are identified as the weakest contributing components, highlighting priority areas for improvement. From an economic perspective, EAF outperforms RK across all financial indicators under both optimistic and pessimistic scenarios. These findings lead to a recommendation for a gradual transformation from RK to EAF, emphasizing workforce development, information system digitization, and technological management enhancement. The primary output of this research is the development of a technology contribution assessment model based on technometric analysis, integrated with economic feasibility evaluation, providing a strategic foundation for more precise technology and investment decision-making in the mineral processing industry.
Improvement Operational Business Process in Logistic Companies Using Model-Based and Integrated Process Improvement Aritonang, Adhe Martha Veronika; Ciptomulyono, Udisubakti
Hasanuddin Economics and Business Review VOLUME 8 NUMBER 1, 2024
Publisher : Faculty of Economics and Business, Hasanuddin University, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26487/hebr.v8i1.5255

Abstract

The logistics business sector is experiencing increasingly competitive and complex developments, requiring enhancements to remain competitive. The method used in this research is the Model-Based and Integrated Process Improvement (MIPI) method, and business process mapping using Business Process Model and Notation. The MIPI method consists of four stages: Understand Business Needs, Understand the Process, Model and Analyze Process, by conducting activity analysis using Value-Added Analysis and Cause and Effect Analysis to identify problem causes, and the final stage is Redesign Process. Value-Added Analysis indicates that in the outbound process, there are 21 activities, comprising 4 Real Value Added, 15 Business Value Added, and 2 Non-Value Added. In the inbound process, there are 21 activities with a composition of 2 Real Value Added, 16 Business Value Added, and 3 Non-Value Added. Based on Cause and Effect Analysis, customer complaints were found to be related to delayed delivery of goods, with root causes identified in planning, methods, equipment, and human factors. Based on these findings, a proposal for a new business process design is made, including the elimination of Non-Value Added activities and parallelism in some activities to simplify Business Value Added activities. Recommendations for these issues include expanding partnerships and collaboration with vendors, increasing fleet size, and providing employee development training.
Proposed Improvement of Trans Semanggi Suroboyo Services Using IPA and QFD Methods Setyani, Kartika; Ciptomulyono, Udisubakti
Hasanuddin Economics and Business Review VOLUME 8 NUMBER 2, 2024
Publisher : Faculty of Economics and Business, Hasanuddin University, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26487/hebr.v8i2.5553

Abstract

The high intensity of private vehicle usage has led to uncontrolled road congestion. To encourage residents to switch to public transportation, the Surabaya City Government introduced Trans Semanggi Suroboyo. Trans Semanggi Suroboyo experienced a decrease in passengers in 2023, with a decline of 324,711 passengers. Based on a preliminary survey with direct interviews conducted with 35 Trans Semanggi Suroboyo passengers, frequent complaints were related to service and facilities. Therefore, it is important to analyze and propose improvements to the services of Trans Semanggi Suroboyo as public transportation in Surabaya. To enhance the quality of services and facilities, it is essential to identify and evaluate passenger perceptions using service quality dimensions based on the Decree of the Director General of Land Transportation Number SK.5923/AJ.005/DRJD/2016. The most important service quality priorities for passengers are measured using the Importance Performance Analysis (IPA) method. This research identified 9 critical attributes that require improvement. Subsequently, a service quality improvement design was developed using the Quality Function Deployment (QFD) approach through the House of Quality (HoQ) matrix, resulting in 5 priority technical responses. Based on these findings, a plan for improving the service and facilities of the Trans Semanggi Suroboyo bus was proposed to maintain the quality of public transportation services.
Priority Selection of Fiohl (Fault Indicator Over Head Line) Installation Location Using the Entropy Method - Promethee Budianto, Akhmad; Ciptomulyono, Udisubakti
Journal Research of Social Science, Economics, and Management Vol. 4 No. 11 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i11.893

Abstract

The main challenge in electricity distribution in Riau and Riau Islands is the high incidence of power line faults. One effort to reduce power line faults is through the installation of FIOHL (Fault Indicator Overhead Line). FIOHL is a device used to detect faults on power lines, which can help quickly identify the location of the fault. In this study, PLN UP2D Riau plans to install 35 FIOHL units on 198 power lines. The objective of this study is to determine the priority order of power lines as the location for installing FIOHLs accurately. By using the Entropy method as a criterion weighting method and PROMETHEE (Preference Ranking Organisation Method for Enrichment Evaluations), the priority order of alternative solutions for determining the power lines can be obtained. The installation of FIOHL must meet eight criteria: number of outages, outage duration, Energy Not Served (ENS), number of outages without cause, feeder load, network length, number of customers, and keypoint ratio for each feeder. The number of customers has the highest weight at 0.175, followed by network length at 0.152 and ENS at 0.151. The priority locations for FIOHL installation using the PROMETHEE method show that the Maroko feeder ranks first with Phi = 0.6329, followed by the Laos feeder with Phi = 0.6247. The allocation of FIOHL installations across each Implementation Unit (UP3) includes 14 units for UP3 Bangkinang, 14 units for UP3 Dumai, 4 units for Pekanbaru, and 3 units for UP3 Rengat..
Evaluating Chemical/Oil Tanker Investments using DEMATEL and ANP: A Case Study in PT ABC Hendriyadi, Hendriyadi; Ciptomulyono, Udisubakti; Dinariyana, Anak Agung Bagus
Journal Research of Social Science, Economics, and Management Vol. 4 No. 12 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i12.921

Abstract

Investment in chemical/oil tankers is crucial for enhancing operational performance and maintaining competitiveness in the global shipping industry. The background of this research is the need to provide solutions to challenges in ship investments that often fail to meet targets, whether in technical performance, compliance with international regulations, or cost efficiency. These conditions affect the competitiveness of companies, as most chemical/oil tanker fleets are over 15 years old, require high maintenance costs, and pose risks of detention by Port State Control (PSC) and rejection by major oil companies. The methodological approach is the integration of Decision-Making Trial and Evaluation Laboratory (DEMATEL) and Analytic Network Process (ANP) to analyze the selection of chemical/oil tanker ship investments. DEMATEL is used to identify cause-effect relationships so that dominant factors can be prioritized. Once the dominant factors are obtained, ANP processes the relationships and dependencies among criteria in the network model and determines more precise weighting. Subsequently, priority calculations are carried out by constructing a supermatrix that encapsulates the relationships among elements. This supermatrix is analyzed to produce final priorities for determining the best alternative. The research data were collected through questionnaires and interviews with stakeholders, including top management and experts. DEMATEL revealed key influencing factors such as Initial Investment, Operating Costs, Regulatory Compliance, Market and Geopolitical Risks, and Technological Risks. These factors are analyzed in the ANP method to obtain a model, network, and pairwise comparisons.
Integration of SERVQUAL, IPA, BWM And QFD For Service Quality Improvement in Aviation Fuel Supply Operations Pritantyo, Firgha Ali; Ciptomulyono, Udisubakti
Journal Research of Social Science, Economics, and Management Vol. 5 No. 6 (2026): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v5i6.1286

Abstract

Service quality in aviation fuel supply operations is critical due to its direct impact on flight punctuality, safety, and overall airport performance. This study aims to systematically identify service quality gaps, prioritize customer requirements, and determine actionable technical responses to improve refueling services at DPPU Juanda. An integrated framework combining SERVQUAL, Importance Performance Analysis (IPA), Focus Group Discussion (FGD), Best Worst Method (BWM), and Quality Function Deployment (QFD) is employed to translate customer expectations into prioritized technical initiatives. The results indicate that schedule integration with stakeholders, real-time monitoring of refueling operations, and strengthening apron audit systems emerge as the most critical technical priorities for service quality improvement. The proposed framework provides a structured decision-support approach that supports managerial decision-making and offers practical guidance for enhancing service reliability in aviation fuel supply operations.
Benefit–Cost–Risk Based Selection of Biomass Co-Firing Feedstock for Coal-Fired Power Plants Using the Analytical Hierarchy Process Salsabila, Disya Berliani; Ciptomulyono, Udisubakti
Interdisciplinary Social Studies Vol. 5 No. 2 (2026): Interdisciplinary Social Studies
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/iss.v5i2.1037

Abstract

The national energy transition encourages the application of biomass co-firing technology in Steam Power Plants (PLTU) as an effort to reduce greenhouse gas emissions and increase the renewable energy mix. The success of the implementation of co-firing is greatly influenced by the selection of the right biomass raw materials, considering the trade-off between benefits, costs, and operational risks. This study aims to determine the most optimal co-firing biomass raw materials in coal-fired power plants using the Benefit-Cost–Risk Analysis approach combined with the Analytical Hierarchy Process (AHP) method. The study was conducted on one of the coal-fired power plants in East Java by comparing three alternatives, namely sawdust, rice husks, and coal without co-firing. The weighting of criteria was carried out through expert assessment using AHP paired comparisons. The selected alternatives were then analyzed for their environmental impact using the Life Cycle Assessment (LCA) approach with the scope of cradle to gate. The results show that sawdust has the highest Benefit value, a Benefit–Cost (BCR) ratio above one, and a level of risk that can still be managed compared to other alternatives. The LCA analysis identified boiler units as the main hotspots of environmental impact, so operational improvements were recommended through water-steam system control. This research provides a basis for strategic decision-making in the selection of co-firing biomass that supports the energy transition and environmental sustainability.
Environmental Impact Assessment of Geothermal Power Plant: Analysis Using Life Cycle Assessment (LCA) and Analytical Hierarchy Process (AHP) Methods Valmay, Altelah Anisa; Ciptomulyono, Udisubakti
Interdisciplinary Social Studies Vol. 5 No. 2 (2026): Interdisciplinary Social Studies
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/iss.v5i2.1059

Abstract

This study aims to identify the environmental impacts arising from the electricity generation process at PT. X and to determine alternative mitigation scenarios that can be applied to reduce these environmental impacts. Using the Life Cycle Assessment (LCA) approach, the study successfully identified the Cooling Tower as the main hotspot in the generation process, with emissions such as CO?, H?S, NH?, and NO? contributing to global warming potential, acidification potential, eutrophication potential, and human toxicity. Based on the analysis using Analytical Hierarchy Process (AHP), the most effective mitigation alternative to reduce environmental impacts is the use of High Performance Lubricant (HPL) for the Fan Cooling Tower (FCT) system. The use of HPL received the highest priority, with a weight of 46.9% of the total decision, as it can reduce friction and heat, leading to improved energy efficiency and reduced motor power consumption. This research contributes to the development of mitigation strategies that can be applied to achieve a more sustainable, efficient, and environmentally friendly geothermal power plant, while also supporting Indonesia's energy transition.
Peran Manajemen Model Intelektual SDM dalam Meningkatkan Kinerja Organisasi Berkelanjutan Dewi, Sri Rachmi Nadhifah; Ciptomulyono, Udisubakti; Handiwibowo, Gogor Arif
El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Vol. 7 No. 3 (2026): El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/elmal.v7i3.11500

Abstract

The rapid development of digital technology and globalization demands that companies not only pursue short-term economic profits but also focus on implementing technology and environmental sustainability. This study aims to analyze the role of Sustainable Intellectual Capital in improving Sustainable Performance in Micro, Small, and Medium Enterprises (MSMEs) in Indonesia. This study will also examine the role of E-Business Entrepreneurial Orientation in mediating the relationship between Sustainable Intellectual Capital and Sustainable Performance. The research method used is a quantitative method with data obtained through an online questionnaire with MSME owners or managerial teams as respondents. The data analysis technique used Structural Equation Modeling (SEM) to test the hypothesis and mediation effect. The results of the study indicate that Sustainable Intellectual Capital has a positive effect on Sustainable Performance and E-Business Entrepreneurial Orientation. Strong Sustainable Intellectual Capital has been proven to be able to encourage the formation of a more rapid E-Business Entrepreneurial Orientation and is able to accelerate the achievement of sustainable performance through technology-based innovation. These results confirm that E-Business Entrepreneurial Orientation has a strategic role, namely being able to support MSMEs in optimizing the potential of their Human Resources (HR) in facing digital market uncertainty by building competitive advantages that are in line with the principles of sustainability.
Co-Authors Achmad Danu Firdaus AHMADI Ahmadi Ahmadi Akhmad Mulyadi Amarulla Octavian Annas S. Setiyoko Arief Nurtjahjo Arino Anzip Aritonang, Adhe Martha Veronika Bakti Nugroho Dwi Kushadianto Budianto, Akhmad David Artanto Dewi, Sri Rachmi Nadhifah Didik Wahyu Cahyono Dinariyana, Anak Agung Bagus Dwi Asmoro, Nurcahya Effi Latiffianti Eko Nurmianto Eko Nurmianto Endin Tri Hartanto Fodyansa, Aldo Fuad Achmadi Gogor Arif Handiwibowo Hakim, Muhammad Saiful Handaningtyas, Inggrid Handiwibowo, Gogor Arif Hanoraga, Tony Hartanto, Endin Tri Hendrixon Hatta Hendriyadi, Hendriyadi Herlina Herlina Herry, Herry Herwindo, Raden Denny Hery Setiyawan I. K. Gunarta Iwan Hendra Susilo Izzat Aulia Akbar Jani Rahardjo Jani Rahardjo Karina Ayu Trijana kusdiana, wawan Kusumaningrum, Ajeng Wardhani Lutfi Paliam Paraya M. Fatkhur Rohman Maghfur Rozudin Ozie Maranatha Wijayaningtyas Marcus Tukan Mohamad Solekhan Mohamad Yusak Anshori Mokh. Suef Moses Laksono Singgih Muhammad Ainul Fahmi Muksin Muksin Nabila, Debby Dea Nabila, Niken Salma Naifah, Sonia Ratnaduhita Nurani Ninditya Nareswari Novitasari, Dyah Nurdiansyah, Ervin Prakosa, Galih Arief Pritantyo, Firgha Ali Putra, I Nengah Putra, Riyan Afnanda Putu Dana Karningsih Rahmaningtyas, Ivana Rashida, Ailsa Dahayu Ridwan Taofiq Firdaus Rindi Kusumawardani, Rindi Rubiyantoro Murniawan Rut Dea Monica S Suharyo, Okol Safrudin, Muhammad Nur Salsabila, Disya Berliani Satria Fadil Persada Savitri, Niken Anggraini Septin Puji Astuti Setyani, Kartika Sjarief Wijaya Soehardjoepri Soehardjoepri Solekhan, Mohamad Sri Rachmi Nadhifah Dewi Srihandoko, Koko Stefanus Eko Wiratno Suef, Mokhammad Sunarta Sunarta Surono, Adi Susilo, Ferdy Hendarto Sutrisno Sutrisno Sutrisno, Sutrisno Suwarno, Panji Tri Achmadi Trika Pitana Valmay, Altelah Anisa Wiscahyo, Gelar Witantyo Witantyo Wiwin Widiasih Yani, Beta Fitri Yudha Prasetyawan Zahra Nurkarima Budiwati Attori