Journal of Renewable Engineering (JORE) is a peer-reviewed open access international journal established for the dissemination of cutting-edge knowledge in the field of Renewable Engineering. All submitted manuscripts will be reviewed by the editors and then evaluated by a minimum of two International Reviewers through a double-blind review process. This is to ensure the quality of manuscripts published in the journal. The journal, which has been published since 2024, is published four times each year in February, April, June, August. Journal title : Journal of Renewable Engineering Initials : JORE Frequency : 4 (four) times a year (February, April, June, August) DOI : 10.62872 ISSN Online : 3046-7624 Editor in Chief : Dr. Kamran Yeganegi, Ph.D Managing Editor : Amalia Tasya S.T Assistant Editor : Rosmaria, S.S Publisher : PT. Anagata Sembagi Education Accreditation : On Process
SWOT Analysis of the Application of Battery-Free Sensor Systems for Smart Infrastructure: A Literature Review on Micro Energy Technology
The development of smart infrastructure requires sensor systems that can operate autonomously without relying on conventional batteries. This study analyzes the strengths, weaknesses, opportunities, and challenges (SWOT) of implementing battery-free sensor systems based on energy harvesting technology for smart infrastructure through a systematic literature study. The research methodology uses a literature review approach by analyzing 85 indexed international journal articles from the IEEE Xplore, ScienceDirect, SpringerLink, and MDPI databases for the period 2019-2024. The results of the SWOT analysis show that battery-free sensor systems have the main advantages of continuous operation, reduced maintenance costs by up to 60%, and are environmentally friendly. The main disadvantages include the limited energy that can be harvested (0.1-100 µW), dependence on environmental conditions, and the complexity of energy management. The greatest opportunities lie in the growth of the smart city market, which will reach $2.5 trillion by 2025, and the development of low-power communication technologies. Key challenges include fluctuations in environmental energy sources, electromagnetic interference, and data security regulations. This study provides strategic guidance for the development and implementation of battery-free sensor systems in smart infrastructure with energy harvesting efficiency that can be increased up to 85% through design optimization and adaptive energy management algorithms
Copyright (c) 2025 Dwiyanto Dwiyanto (Author) https://creativecommons.org/licenses/by-sa/4.0
Exploration of Stakeholder Perceptions on the Application of Biomining for Mining Waste Management
Mining waste management is a major challenge, resulting in water pollution, ecosystem degradation, and heavy metal accumulation. Biomining, the use of microorganisms to extract and stabilize metals, is seen as an innovative solution that is more environmentally friendly than conventional methods. This study aims to explore the perceptions of stakeholders regulators, mining companies, local communities, and academics on the application of biomining in mining waste management. The study employed a descriptive qualitative approach with a case study design. Data were obtained through in-depth interviews, focus group discussions, field observations, and document reviews. Analysis was conducted manually through transcription, coding, theme grouping, and source triangulation to ensure data validity. The results show that academics and regulators have positive perceptions of biomining because it supports the principles of a circular economy and sustainable development. Local communities welcome biomining with cautious optimism, influenced by negative experiences with conventional methods, but still demand transparency and safety assurance. Conversely, mining companies are more skeptical, considering technical risks, initial investment costs, and the uncertainty of long-term profitability. The study's conclusions emphasize that the success of biomining depends on convincing technical evidence, regulatory certainty, and social legitimacy through community engagement. Triple helix synergy between government, industry, and academia is needed to accelerate the adoption of biomining technology in Indonesia.
Copyright (c) 2025 Rafiuddin (Author) https://creativecommons.org/licenses/by-sa/4.0
The Application of Artificial Intelligence in Industrial Supply Chain Optimization and Its Implications for Business Performance
The digital transformation occurring in the global industrial landscape has driven the need for more adaptive, efficient, and resilient supply chain systems. Amid increasing market complexity, demand fluctuations, and delivery time pressures, the integration of Artificial Intelligence (AI) technology has become a crucial strategy in addressing these challenges. This study aims to evaluate the strategic role of AI in industrial supply chain optimization and its impact on business performance. Using a qualitative approach using a systematic literature review method, various scientific publications from 2019 to 2024 were analyzed. The study results indicate that AI contributes significantly to demand planning, inventory management, distribution optimization, and data-driven decision-making. Positive impacts include increased operational efficiency, predictive accuracy, delivery reliability, and business productivity. However, implementation challenges remain, such as infrastructure limitations, a lack of expertise, organizational resistance, and regulatory and ethical issues. Therefore, successful AI adoption requires a comprehensive approach, encompassing technological readiness, human resource development, and sustainable data governance. This study recommends the need for a collaborative and inclusive digital transformation roadmap to realize an intelligent and competitive industrial supply chain in the digital economy era.
Copyright (c) 2025 Arie Wahyu Prananta, Amelia Hayati (Author) https://creativecommons.org/licenses/by-sa/4.0
Industrial Revolution 4.0 In Mechanical Engineering: A Literature Review On The Application Of Iot And Automation In Production Systems
The Industrial Revolution 4.0 has revolutionized the mechanical engineering production paradigm through the integration of digital technologies such as the Internet of Things (IoT), cyber-physical systems (CPS), and intelligent automation. This study aims to evaluate the strategic role of IoT and automation in realizing an adaptive, efficient, and sustainable mechanical engineering production system. Using a qualitative approach with a literature review method, this study analyzes the latest findings from relevant scientific sources over the past five years. The results of the review indicate that the implementation of IoT contributes to increased efficiency through predictive maintenance, reduced downtime, and real-time data-driven decision-making. On the other hand, the evolution of automation includes precision robotics, cloud-based CNC, and intelligent PLCs that enhance production flexibility and quality. However, several challenges have been identified, such as limited digital human resources, inadequate infrastructure, and system interoperability issues. Therefore, adaptive strategies such as continuous technical training, cross-sector collaboration, and strengthening industrial digitalization policies are needed. This study concludes that the integration of IoT and automation is a key foundation for the transformation of mechanical engineering towards inclusive and sustainable smart manufacturing, and emphasizes the importance of synergy between technology, people, and policies in supporting a systemic and contextual industrial revolution.
Copyright (c) 2025 Arie Wahyu Prananta, Dwiyanto Dwiyanto (Author) https://creativecommons.org/licenses/by-sa/4.0
Literature Review: Integration of Hybrid Renewable Energy Systems in Remote Areas
The availability of equitable and sustainable energy in remote areas is a major challenge for national development, primarily due to limited infrastructure and electricity access from conventional grids. Hybrid energy systems that combine renewable energy sources such as solar, wind, and microhydro with energy storage or diesel backup have emerged as an adaptive solution to address energy needs in off-grid areas. This study uses a qualitative approach based on literature to explore relevant hybrid energy system integration practices, challenges, and models across various geographic and social contexts. The study identifies that the success of hybrid system implementation is determined not only by its technological configuration but also by local social, economic, and institutional factors. Technological advances such as the Internet of Things (IoT) and smart energy management systems have contributed to improving system efficiency and reliability. However, obstacles remain in the form of limited funding, low public energy literacy, and weak supporting policies at the regional level. Through a thematic synthesis of the literature from the past five years, this study formulates a local energy ecosystem-based integration model that encompasses modular technology, multilevel policies, and community empowerment. These results are expected to serve as a strategic reference in promoting a just and sustainable energy transition in underdeveloped regions.
Copyright (c) 2025 Sulaiman A, Minarti Minarti, Rahmad Surya Hadi Saputra (Author) https://creativecommons.org/licenses/by-sa/4.0
Literature Review of the Development of Sensor Technology for Monitoring Civil Engineering Infrastructure
This study aims to examine the development of sensor technology in civil engineering infrastructure monitoring systems through a literature study approach with a qualitative descriptive method. The need for accurate, real-time, and sustainable monitoring systems is increasingly urgent as the complexity and age of public infrastructure increases. This study highlights the evolution of sensors such as strain gauges, accelerometers, and Wireless Sensor Network (WSN)-based systems that are now integrated with the Internet of Things (IoT) and edge computing. This technology enables early detection of structural damage and efficient data processing, thereby increasing the effectiveness of structural maintenance and safety. However, implementation in the field still faces challenges such as initial costs, extreme environmental conditions, and limitations of existing structures. Through content analysis of various scientific publications over the past decade, it was found that the success of the Structural Health Monitoring (SHM) system is not only determined by the quality of the sensor, but also by the data integration strategy and analytical-based decision making. This study provides academic contributions in mapping trends and challenges of sensor technology and offers practical insights for the development of adaptive and sustainable monitoring systems, especially in developing countries like Indonesia.
Copyright (c) 2025 Eric Eric (Author) https://creativecommons.org/licenses/by-sa/4.0
Optimization of Solar and Wind Hybrid Energy System with IoT Integration for Remote Areas in Indonesia
Limited access to electricity in remote areas of Indonesia reflects complex structural issues, including geographic constraints, policy inequalities, and the low effectiveness of centralized approaches. Thousands of villages in the 3T (Disadvantaged, Frontier, and Outermost) regions still do not enjoy reliable electricity, hampering socio-economic development and reinforcing the cycle of poverty. Although Indonesia has great potential for renewable energy—such as solar and wind—its use is still minimal due to infrastructure constraints, investment, and non-contextual development approaches. In this context, a hybrid solar-wind energy system integrated with Internet of Things (IoT) technology offers an efficient and sustainable decentralized solution. IoT enables real-time monitoring, predictive maintenance, and data-driven energy management, which are critical in remote areas with limited technicians and physical access. This study uses a qualitative approach through a literature review to examine the challenges, potential, and policy relevance in developing IoT-based renewable energy systems. The results of the analysis show that transforming energy systems in marginalized areas requires not only technological innovation, but also a paradigm shift towards inclusive energy justice. Therefore, strengthening local capacity and integrating context-based policies are key to realizing a fair, reliable and sustainable energy system in Indonesia.
Copyright (c) 2025 Usman Tahir, Erwan Darmawan, Farisan Robbbani (Author) https://creativecommons.org/licenses/by-sa/4.0
Smart City System Review: Challenges and Opportunities for Implementation in Urban Areas
Rapid urbanization has pushed cities in Indonesia to face complex challenges related to infrastructure capacity, public services, and urban governance. Smart cities are seen as a strategic solution to build efficient, adaptive, and sustainable cities through the use of digital technologies such as the Internet of Things (IoT), artificial intelligence (AI), and big data. However, the implementation of smart cities in Indonesia still faces various obstacles, including digital infrastructure inequality, low human resource capacity, and weak institutional coordination. This study uses a qualitative descriptive approach and a SWOT analysis framework to identify the strengths, weaknesses, opportunities, and threats in the implementation of smart cities in urban areas in Indonesia. Data were obtained from policy literature studies, national and international agency reports, and smart city project documentation. The results of the study show that the success of smart cities is highly dependent on the synergy between infrastructure readiness, utilization of technological opportunities, and mitigation of socio-technological risks. Policies are needed that encourage cross-sector collaboration, citizen data protection, and strengthening digital literacy and local capacity. With a participatory approach and inclusive governance, smart cities can be an instrument for transforming cities that are not only technologically modern, but also socially just and sustainable in the long term.
Copyright (c) 2025 Julinaldi Julinaldi, Nursahar Buang , Dody Dody, Muhammad Ade Kurnia Harahap (Author) https://creativecommons.org/licenses/by-sa/4.0
Literature Review on the Role of Mechanical Engineering in Supporting the Industrial Revolution 5.0
The Industrial Revolution 5.0 marks a paradigm shift from full automation to symbiotic collaboration between humans and machines, emphasizing a human-centric approach, sustainability, and the integration of intelligent technologies. In this context, the role of mechanical engineering has undergone a significant transformation, from merely designing mechanical systems to becoming a multidisciplinary bridge between digital technology and human needs. This study aims to review the literature related to the contribution of mechanical engineering in supporting intelligent manufacturing systems, human-machine collaboration, and the application of sustainability principles such as circular economy and eco-design. Using a qualitative literature study method, data were obtained from indexed academic sources in the last decade and analyzed using a thematic approach. The results of the study indicate that mechanical engineering must integrate artificial intelligence, the Internet of Things (IoT), and cyber-physical systems to support adaptive and efficient production. In addition, the development of cobots requires expertise in safety-based and ergonomic design. In terms of the environment, mechanical engineers are required to apply the principles of product life cycle engineering and low-emission technologies. This transformation creates cross-field challenges that require new competencies and a systemic approach. Therefore, a comprehensive literature review is a strategic basis for formulating the direction of adaptive and sustainable mechanical engineering development in the Industry 5.0 era
Copyright (c) 2025 Eric Krisna (Author) https://creativecommons.org/licenses/by-sa/4.0
Establishing Effective Processes in Information Systems
In the era of increasingly developing digital transformation, information systems (IS) no longer function only as administrative tools, but have become strategic components in supporting the sustainability and competitive advantage of organizations. This study aims to evaluate strategic planning of information systems using the Ward and Peppard methodology approach that emphasizes the alignment between business strategy and IS strategy. A descriptive qualitative approach with case studies is used in this study, with data collection through documentation studies and literature reviews. The analysis was carried out using various techniques, including SWOT, Value Chain, Critical Success Factors (CSF), Balanced Scorecard, McFarlan's Strategic Grid, and PEST. The results of the study indicate that the success of IS implementation is greatly influenced by a deep understanding of the organization's strategic needs and the use of appropriate methodologies to identify relevant IS applications. Ward and Peppard's methodology is able to provide a systematic framework for integrating information technology into business processes as a whole. Thus, IS strategic planning not only improves operational efficiency but also plays an important role in supporting the right decision making and the development of the organization's adaptive capabilities in facing the dynamics of the external environment. These findings provide an important basis for organizations in determining IT strategies that are aligned with long-term goals
Copyright (c) 2024 Abdullah Haikal Fikri (Author) https://creativecommons.org/licenses/by-sa/4.0
Amidst increasingly tight business competition and increasingly critical customers in choosing products or services, companies are required to build more personal and sustainable relationships through Customer Relationship Management (CRM) strategies. The IDIC (Identify, Differentiate, Interact, Customize) model developed by Peppers and Rogers is one of the effective approaches in implementing CRM in a structured and strategic manner. This study aims to analyze the application of the IDIC Model in improving the effectiveness of customer relationship management. The approach used is qualitative with descriptive-analytical methods, through literature studies and literature analysis from various relevant sources. The results of the discussion show that the IDIC Model facilitates companies to recognize customers comprehensively, differentiate them based on value and needs, build meaningful interactions, and customize offers individually. Identify and Interact are included in the operational CRM realm, while Differentiate and Customize are part of analytical CRM that relies on customer data analysis. This model enables large-scale personalization, which is strengthened by big data technology and artificial intelligence (AI), so that companies can increase customer engagement, loyalty, and business profits sustainably. The application of the IDIC Model reflects a shift from mass marketing to a more relevant one-to-one marketing approach in the digital era
Copyright (c) 2024 Miftahur Rizky (Author) https://creativecommons.org/licenses/by-sa/4.0
Assessing And Understanding The Current Situation In Information Systems
This study aims to examine the information system strategy in supporting the alignment between business needs and technology utilization through the Business Process Reengineering (BPR) approach. In a dynamic business environment, understanding external opportunities and threats, as well as the organization's internal capabilities, is an important foundation in designing information systems that can drive efficiency, effectiveness, and competitive advantage. Information systems not only play a role as operational support, but also as a driver of strategic transformation through innovation in processes, structures, and organizational culture. This study uses a qualitative descriptive method with a case study approach, involving in-depth interviews, observations, and documentation studies. The analysis techniques used include Critical Success Factors (CSF), Balanced Scorecard (BSC), and gap analysis to map actual conditions and determine future strategies. The results of the study are expected to produce an application portfolio that is in accordance with the needs of the organization, as well as a BPR strategy that is oriented towards improving service quality, reducing costs, and customer satisfaction. The strategic value of information systems is largely determined by the extent to which business understanding is integrated into the design of an adaptive system. Active participation at all levels of the organization, including through workshops based on actual data, is key to formulating effective and sustainable strategies.
Copyright (c) 2024 Anisatul Maghfiroh (Author) https://creativecommons.org/licenses/by-sa/4.0
Literature Study: Potential of 3D Printing Technology in the World of Mechanical Engineering and Manufacturing
This study discusses the paradigm shift in mechanical engineering due to the adoption of 3D printing technology as part of the industrial revolution 4.0. This additive manufacturing technology offers advantages in terms of design complexity, production efficiency, and cost flexibility, but also raises technical challenges such as material anisotropy, surface roughness, and process parameter control. Through a descriptive qualitative approach based on literature studies, this study explores the impact of 3D printing on the structure of the manufacturing industry, performance-based design, and the need for reform in engineering education. Data sources are taken from scientific journals, academic books, and technical reports from the last decade (2014–2024), with a thematic analysis of technology applications, implementation challenges, and implications for mechanical engineering curricula. The results show that although 3D printing has fundamentally changed the design and production process, its integration into the industry is still limited by conventional supply chain structures and lack of human resource readiness. This study emphasizes the importance of transforming the engineering education system towards a digital-based interdisciplinary approach, as well as the need for critical and contextual technology adoption. Thus, 3D printing does not only act as a production tool, but also as a catalyst for systemic change in mechanical engineering and manufacturing.
Copyright (c) 2025 Ari Beni Santoso, Rahmad Surya Hadi Saputra (Author) https://creativecommons.org/licenses/by-sa/4.0
Optimization of On-Grid Solar Power Plant Design for Urban Residential Areas: Case Study in Indonesia
The increasing demand for electricity in urban areas of Indonesia demands diversification of sustainable energy sources. On-grid Solar Power Plants (PLTS) are a strategic alternative to reduce dependence on fossil fuels and increase household energy resilience. However, optimizing PLTS design still faces technical and structural challenges, such as the mismatch between panel production capacity and electricity consumption patterns, limited space, and weak regulatory support and fiscal incentives. This study uses a qualitative approach with a case study in an urban housing complex to examine the design process, implementation, and obstacles of on-grid PLTS. Data were obtained through in-depth interviews, field observations, and studies of policy and technical documents. The results of the study indicate that the success of PLTS implementation is highly dependent on a design that is contextual to the technical and social characteristics of housing, the support of fiscal policies such as initial subsidies, and institutional integration between communities, local governments, and the private sector. In addition, community-based approaches such as energy cooperatives can increase inclusive system adoption. This study concludes that on-grid PLTS is not only a technical solution for the clean energy transition, but also an instrument of socio-economic transformation that requires multidimensional synergy in its implementation in the urban environment of Indonesia
Copyright (c) 2025 Doni Suseno, I Putu Hikariantara, Usman Tahir, Miko Mei Irwanto (Author) https://creativecommons.org/licenses/by-sa/4.0
Hybrid Renewable Energy System: Sustainable Energy Engineering Solutions For The Future
This study aims to examine the potential contribution of the Hybrid Renewable Energy System in supporting sustainable energy transitions in the future, especially in the context of reducing carbon emissions and dependence on fossil fuels. This study uses a descriptive-quantitative research type with an engineering simulation approach. The study focuses on modeling and analyzing the contribution of a hybrid renewable energy system (HRES) in reducing carbon emissions and reducing dependence on fossil fuels. . Based on the results of observations and analysis of technical data on solar radiation and daily wind speed, photovoltaic (PV)-based renewable energy systems show significant technical potential in generating electricity consistently throughout the year, especially in tropical areas. Meanwhile, although the potential for wind energy is relatively smaller, especially in areas with low average wind speeds, wind turbines can still provide additional contributions — especially when solar conditions are limited such as at night or in the rainy season. By combining these two energy sources into a hybrid system (HRES), the efficiency of renewable energy utilization can be maximized. The combination of PV and wind turbines allows : 1 ) Direct carbon emission reduction, which is ~22.7 tons of CO₂ per year from the PV system alone. 2) Diversification of energy sources, which reduces vulnerability to single dependence on fossil fuels. 3) Increasing the reliability of the electricity system, especially for remote areas and areas not yet covered by the PLN network. Overall, HRES provides a practical, efficient, and sustainable solution to meet the energy needs of small to medium-scale communities. It also opens up opportunities for energy decentralization, promotes a green economy, and strengthens Indonesia's commitment to net zero emissions targets in the future.
Copyright (c) 2025 Loso Judijanto (Author) https://creativecommons.org/licenses/by-sa/4.0
The Industrial Revolution 5.0 marks a paradigm shift from full automation to symbiotic collaboration between humans and machines, emphasizing a human-centric approach, sustainability, and the integration of intelligent technologies. In this context, the role of mechanical engineering has undergone a significant transformation, from merely designing mechanical systems to becoming a multidisciplinary bridge between digital technology and human needs. This study aims to review the literature related to the contribution of mechanical engineering in supporting intelligent manufacturing systems, human-machine collaboration, and the application of sustainability principles such as circular economy and eco-design. Using a qualitative literature study method, data were obtained from indexed academic sources in the last decade and analyzed using a thematic approach. The results of the study indicate that mechanical engineering must integrate artificial intelligence, the Internet of Things (IoT), and cyber-physical systems to support adaptive and efficient production. In addition, the development of cobots requires expertise in safety-based and ergonomic design. In terms of the environment, mechanical engineers are required to apply the principles of product life cycle engineering and low-emission technologies. This transformation creates cross-field challenges that require new competencies and a systemic approach. Therefore, a comprehensive literature review is a strategic basis for formulating the direction of adaptive and sustainable mechanical engineering development in the Industry 5.0 era.
Copyright (c) 2025 Idzani Muttaqin (Author) https://creativecommons.org/licenses/by-sa/4.0
Preventive Maintenance Strategies to Increase Industrial Machine Life
In modern industries that increasingly rely on machines and automation systems, efficient maintenance is key to maintaining production continuity and avoiding losses due to unscheduled downtime. Preventive maintenance has emerged as a more effective solution compared to the corrective maintenance approach, which is reactive. This study discusses the urgency of implementing preventive maintenance in improving machine reliability, extending equipment life, and reducing long-term costs. The use of advanced technologies such as the Internet of Things (IoT), Computerized Maintenance Management Systems (CMMS), and predictive analytics can optimize preventive maintenance by detecting potential failures early, thereby minimizing downtime by up to 50%. However, the effectiveness of this strategy is highly dependent on the readiness of the digital infrastructure and the competence of the human resources (HR) who manage the technology. Without the integration of historical data, real-time monitoring systems, and adequate training, the implementation of preventive maintenance is at risk of being less than optimal. Therefore, the development of a technology-based preventive maintenance strategy must be accompanied by increased technical and managerial capacity, as well as organizational readiness to adapt to digital change. This research shows that a structured, data-driven preventive approach can support operational efficiency, strengthen competitiveness, and support industry sustainability.
Copyright (c) 2025 Amalia Tasya, Muhammad Suprapto (Author) https://creativecommons.org/licenses/by-sa/4.0
Smart City Priority Innovation Assessment In West Bandung Regency
This study aims to assess the implementation of smart city innovations in West Bandung Regency in 2024, focusing on evaluating user satisfaction with the priority applications that have been launched. The research method uses the Unified Theory of Acceptance and Use of Technology (UTAUT) model to measure Performance Expectancy, Effort Expectancy, Social Influence, and Facilitating Conditions variables, as well as their impact on customer satisfaction. Data were collected through questionnaires from public servants associated with 37 smart city innovations. The results showed that Smart Branding: Visit KBB had the highest Performance Expectancy and Facilitating Conditions scores, while BA QRIS and Smart Branding: Visit KBB applications had the highest Effort Expectancy scores. The implications of this research are to provide recommendations for improving the effectiveness and acceptance of smart city applications in West Bandung Regency, as well as providing insights for the development of future smart city programs.
Copyright (c) 2025 Rizky Fajar Ramdhani, Hady Sofyan (Author) https://creativecommons.org/licenses/by-sa/4.0
Evaluation of the Success of Transportation Infrastructure Renewal Projects: Case Study of the Jakarta-Bandung High-Speed Train Development
The development of transportation infrastructure has a multidimensional impact in driving economic growth and regional integration. The Jakarta-Bandung High-Speed Rail project is expected to reduce traffic congestion and improve connectivity and mobility efficiency. However, its success must be assessed not only from the technical aspects and physical completion, but also the effectiveness of public investment, long-term economic impacts, and environmental sustainability. The main challenges of this project include land acquisition, financial uncertainty due to debt-based financing schemes, and integration with other transportation systems. From a social perspective, this project has the potential to drive urbanization around the route, but also poses the risk of development inequality and gentrification. Ecological impacts are also a concern, especially in terms of land degradation and operational energy consumption. This study uses a literature study method with content analysis to evaluate the success of the project based on economic, social, and environmental indicators. The results of the study show that the effectiveness of this project is highly dependent on operational optimization, integration of transportation modes, and the sustainability policies implemented. With transparent governance and appropriate risk mitigation strategies, this project has the potential to provide long-term benefits for economic growth and community welfare, as well as being a model for more inclusive and sustainable transportation infrastructure development in Indonesia.
Copyright (c) 2025 Amelia Hayati, Rahadi Meta Tri Sulaksana, AAA Made Cahaya Wardani, Adyk Marga Raharja (Author) https://creativecommons.org/licenses/by-sa/4.0
SWOT Analysis of the Effect of New Materials on Engine Performance and Durability
Material innovation in the manufacturing and automotive industries plays an important role in improving engine performance and durability. Conventional materials such as steel and aluminum have limitations in resistance to extreme temperatures and wear, so new materials such as high-performance metal alloys, carbon fiber composites, and nanotechnology-based materials are developed as solutions. These materials are capable of improving energy efficiency, reducing weight, and extending component life. However, the adoption of new materials faces challenges such as high production costs, fabrication complexity, and validation in real operational environments. Therefore, collaboration between academia, industry and government is needed to develop solutions that are not only technically superior, but also economical and sustainable. This research uses the SWOT method to analyze the strengths, weaknesses, opportunities, and threats in the application of new materials. Data were obtained through literature studies, laboratory experiments, and expert interviews. The analysis results show that materials such as carbon fiber composites (CFRP) have advantages in fuel efficiency and corrosion resistance, but also face challenges in production and maintenance costs. With innovations in manufacturing technology and a more sustainable approach, new materials have the potential to be the optimal solution for the automotive and manufacturing industries in the future
Copyright (c) 2025 Anauta Lungiding Angga Risdianto, Rahmad Surya Hadi Putra, Muh Thohirin, Jacky Chin (Author) https://creativecommons.org/licenses/by-sa/4.0
Application Of Analytic Hierarchy Process AHP Method In Material Selection For Construction
Material selection in the construction industry is a strategic decision that affects the cost efficiency, durability, and sustainability of a project. This study applies the Analytic Hierarchy Process (AHP) method to determine the best construction material based on four main criteria: mechanical strength, environmental resistance, cost efficiency, and environmental sustainability. The hierarchical structure is built with three levels: material selection objectives, evaluation criteria, and compared material alternatives—namely structural steel, cross-laminated timber (CLT), and reinforced concrete. The assessment uses the Saaty scale (1–9), then the matrix is normalized to obtain priority weights. Consistency tests are carried out by calculating the maximum eigenvalue (λmax), Consistency Index (CI), and Consistency Ratio (CR). The results show that structural steel has the highest weight (0.4888093), making it the best choice compared to CLT and reinforced concrete. This study confirms that the AHP method is able to reduce subjectivity in decision making with a data-driven approach. Integration with technologies such as Building Information Modeling (BIM) and Artificial Intelligence (AI) can improve the accuracy of the analysis. Thus, this method can be a solution in selecting construction materials that are more systematic and sustainable.
Copyright (c) 2025 Warkianto Widjaja, Jonggi Harianja, Edison Hatoguan Manurung, Suharyanto Suharyanto (Author) https://creativecommons.org/licenses/by-sa/4.0
Simple Decision Making In Renewable Energy Planning
Renewable energy planning is a complex process, involving multiple dimensions, including natural resource availability, government policies, and socio-economic factors. This study emphasizes the importance of a decision-making approach that is not only technically based, but also considers the social and political factors that influence policy implementation. Decision-making in renewable energy planning is often hampered by information inequality between stakeholders, social resistance, and policy instability that can slow down a sustainable energy transition. Multi-Criteria Decision Making (MCDM) methods have been used to help stakeholders choose the best option, but overly technical approaches can be a barrier in developing countries. Therefore, simpler and more data-driven approaches, such as heuristic models, become more relevant in contexts of uncertainty. This research uses a descriptive qualitative approach through case studies to explore the dynamics of decision-making in renewable energy planning. Data were collected through in-depth interviews, focus group discussions (FGDs), and document analysis. The results show that transparency, open communication and stakeholder participation are essential to overcome social and political barriers and support effective and sustainable renewable energy policy implementation.
Copyright (c) 2025 Rahmad Surya Hadi Saputra, Sulaiman A, Usman Tahir, Loso Judijanto (Author) https://creativecommons.org/licenses/by-sa/4.0
Internal Corrosion Rate Of Api 5l X-42 Steel In Crude Oil Production Installation Pipe
Steel pipes remain the preferred choice for distribution and crude oil installation pipes in the oil and gas industry due to their strength, surface hardness, and cost-effectiveness. However, their susceptibility to corrosion in harsh environments poses significant challenges. This research focuses on analyzing the corrosion rate of API 5L X-42 steel in a crude oil environment at a temperature of 40°C. The corrosion rate was determined using the weight loss method, revealing that the rate varies over time. The findings of this study provide crucial insights for the industry, particularly in preventing leaks in crude oil installation pipes caused by corrosion. By understanding the corrosion behavior of steel pipes under specific conditions, the oil and gas industry can implement more effective maintenance strategies and material selection, ultimately enhancing the safety and longevity of pipeline infrastructure. The study highlights the importance of regular monitoring and the adoption of preventive measures to mitigate corrosion-related issues, thereby ensuring the continuous and safe operation of oil and gas installations
Copyright (c) 2024 Edi Septe.S (Author) https://creativecommons.org/licenses/by-sa/4.0
Determining Book Distribution Routes by Implementing Vehicle Routing Problems Using Excel Solver at Gunadarma University
Gunadarma University operates multiple campuses, each equipped with its own library. To ensure equitable access to newly acquired titles, it is imperative that these materials are disseminated across all campus libraries. So, when a new book title is added, this book must also be owned by the library at each campus location. In this research, book distribution routes with the shortest distance and time will be determined using the Vehicle Routing Problem (VRP) method with Excel Solver. Gunadarma University has a central library which is the starting point for distributing books to other campuses. The central university library serves as the distribution hub, from which books are dispatched to seven additional campus locations. Simulation results using Excel Solver showed that the shortest route for sending books to seven library locations on the Gunadarma University campus using one vehicle was a distance of 137.14 km in 3 hours 12 minutes. This optimized route yielded substantial cost savings, amounting to a 12.5% reduction compared to previous distribution practices.
Copyright (c) 2024 Maulida Boru Butar Butar (Author) https://creativecommons.org/licenses/by-sa/4.0
Utilisation Of Clamshells As Aggregate Substitute In Paving Blocks
Paving blocks are becoming more popular among consumers because they are environmentally friendly, can save groundwater, are easy to install and maintain, and have many shapes that add aesthetic value. This study aims to determine the difference of shells on the water absorption capacity of paving blocks and the strength of paving blocks. Experiments were conducted at the structure and materials laboratory of Muhammadiyah University of Parepare from August to October 2023 for this research method. The results showed that the water absorption of paving blocks was influenced by the addition of seashells. The water absorption values of the 0%, 5%, 10%, and 25% variations were 1.4 percent, 2 percent, 3.4 percent, and 3.7 percent for the 7-day treatment period; 0.6 percent, 1.7 percent, 2.4 percent, and 3.3 percent for the 14-day treatment period; and 1.3%, 2.8 percent, 3.0 percent, and 4.6 percent for the 28- day treatment period. According to the above results, the more clamshells added, the greater the water absorption. The compressive strength shows that the addition of clamshells affects the compressive strength of block paving. The compressive strength values were 23.841 Mpa, 9.365 Mpa, 21.587 Mpa, and 11.429 Mpa at the 28-day curing age, respectively. The more clamshells added, the lower the compressive strength.
Copyright (c) 2024 Arman Maulana, Andi Sulfanita, Hendro Widarto, Adnan Adnan (Author) https://creativecommons.org/licenses/by-sa/4.0
Custom Menu Msme Goods Management Application System Based On Android
The Android-based inventory management application for MSMEs is designed to enhance efficiency and accuracy in inventory management for micro, small, and medium enterprises (MSMEs). The application offers features such as adding, reducing, and updating stock items, tracking transaction history, and generating real-time stock and sales reports. With an intuitive and user-friendly interface, this application simplifies inventory management for users. User data security is ensured through secure authentication, data encryption, and regular backups. Continuous maintenance and user support are also provided to ensure the application remains stable and meets user needs. This application contributes to the digitalization process of MSMEs, helping them improve operational efficiency and compete in an increasingly digital market.
Copyright (c) 2024 Cut Asiana Gemawaty, Han Sulaiman, Danang Sutrisno (Author) https://creativecommons.org/licenses/by-sa/4.0
Web-Based E-Learning Application For Mathematics And Indonesian Language Subjects At Sman 4 South Tangerang Using Html And Php
This project develops a web-based e-learning application for Mathematics and Indonesian subjects at SMAN 4 South Tangerang, using HTML and PHP as the main platform. The main goal of this app is to provide interactive and easily accessible educational resources that enhance the learning and teaching process. The app is designed to meet the specific needs of students and teachers, enriching the learning experience through customizable content and interactive features. In this study, we analyzed the effectiveness of the app in terms of increasing student engagement and learning efficiency. The development method involves requirements analysis, system design, implementation, and testing. Usability and accessibility testing is carried out to ensure that the application can be used easily by all students, including those with special needs. The results of using the application show a significant increase in student learning motivation and academic performance, especially in Mathematics and Indonesian. Teachers also reported improvements in classroom management and teaching effectiveness. Despite this, the application still requires some improvements regarding scalability and data security. In conclusion, this e-learning application has been successful in facilitating a more dynamic and supportive learning environment at SMAN 4 South Tangerang. This project offers important insights into how technology can be leveraged to improve the quality of education.
Copyright (c) 2024 Desy Diana, Munich Heindari Ekasari (Author) https://creativecommons.org/licenses/by-sa/4.0
Video Conference Rental Business Application Design At Pt. Alfa Copies Android-Based Virtual Technology
The purpose of this research is to determine the process of managing device rental data, tenant profiles, tenant transactions, device rental dates, payments, tenant data reports, product and price reports, sales transaction reports, bill payment reports at PT. Alfa Cipta Virtual Technology. The method used to process this activity is a qualitative method (System Life Cycle (SDLC)), namely to design, build, maintain and develop a system. After the author designs, builds and develops a device rental system, finally the author can draw the conclusion that management The device rental business becomes more dynamic and simpler so that it can improve sales and admin sales performance. Making sales transaction reports and tenant data reports is much faster because management can be accessed via an application on a smartphone.
Copyright (c) 2024 Nabil Nabil, Sutan Mohammad Arif, Zikriah Zikriah (Author) https://creativecommons.org/licenses/by-sa/4.0
Mechanical Behavior of Fiber Strapping Band for Infrastructure Rigid Pavement
The development of science, especially in the field of transportation, especially roads, requires adequate infrastructure in the form of rigid roads or pavements that are in accordance with conditions in the field. This study aims to analyze the addition of fiber strapping band by 0.75%, 1.25%, 1.75% to increase concrete compressive strength, and concrete tensile strength. Research Methods The experiment was conducted in the Civil Engineering laboratory of the University of Muhammadiyah Parepare. The results of the study were 0% (normal), 0.75%, 1.25% and 1.75% on fine aggregates. Testing of 28-day-old concrete on normal concrete amounted to 22.74 Mpa, on 0.75% fiber strapping band concrete amounted to 21.137 Mpa, on 1.25% strapping band fiber concrete amounted to 16.70 Mpa, and on 1.75% strapping band fiber concrete amounted to 17.26 MPa. The results of tensile testing of concrete at the age of 28 days, in normal concrete amounted to 5.889 MPa. For concrete with 0.75% fiber strapping band of 6.111 MPa. For concrete with 1.25% fiber strapping band of 5.556 MPa. For concrete with 1.75% fiber strapping band of 5.778 MPa. The results showed that the use of strapping bands as a substitute for fine aggregate in concrete had a considerable influence so that it experienced an increase in pressure on concrete by a certain percentage. Thus concrete with 0.75% fiber strapping band produces compressive strength plans and is suitable for use for rigid pavement pavement.
Copyright (c) 2024 Adnan Adnan, Habibie Habibie , Rahmawati Rahmawati (Author) https://creativecommons.org/licenses/by-sa/4.0
Implementasi Pembuatan Website Portofolio Menggunakan Framework Laravel pada Platform Replit
Dalam era digital yang semakin maju, portofolio online menjadi semakin penting bagi individu dan profesional di berbagai bidang. Salah satu pendekatan yang populer dalam pembuatan website portofolio adalah menggunakan framework Laravel, namun tantangan muncul terutama bagi pemula. Di sinilah pentingnya mempertimbangkan penggunaan platform pengembangan web online, seperti Replit.Penelitian ini mengeksplorasi implementasi pembuatan website portofolio menggunakan framework Laravel pada platform Replit. Kami melihat bagaimana Replit dapat menjadi solusi yang efektif untuk mempermudah proses pengembangan web dengan Laravel, terutama bagi pemula. Selain itu, kami juga menyoroti keuntungan kolaborasi dan berbagi proyek yang ditawarkan oleh Replit. Pentingnya penggunaan framework Laravel dalam pembuatan website portofolio juga disoroti, karena menawarkan struktur proyek yang terorganisir, keamanan yang kuat, dan performa yang handal. Penelitian ini membahas langkah-langkah implementasi pembuatan website portofolio menggunakan Laravel pada platform Replit, serta menganalisis kelebihan dan kekurangan menggunakan platform Replit untuk pengembangan web Laravel. Metode kualitatif digunakan dalam penelitian ini untuk memahami konteks pengembangan website portofolio, mengumpulkan data kualitatif, menganalisis data secara induktif, dan memberikan interpretasi serta kesimpulan. Temuan penelitian ini menyoroti kesesuaian framework Laravel, kemudahan pengembangan dengan Replit, tantangan dalam integrasi, pengalaman pengguna, dan rekomendasi untuk pengembangan masa depan. Kesimpulannya, implementasi pembuatan website portofolio menggunakan framework Laravel pada platform Replit menawarkan sejumlah keuntungan, namun juga menimbulkan beberapa tantangan. Hasil penelitian ini memberikan pemahaman yang mendalam tentang proses ini dan dapat menjadi landasan untuk pengembangan lebih lanjut dalam memperbaiki dan memperluas fitur aplikasi web, serta meningkatkan pengalaman pengguna secara keseluruhan.
Copyright (c) 2024 Melissa (Author) https://creativecommons.org/licenses/by-sa/4.0