Publication Search

The Paiton Steam Power Plant (PLTU) is one of the main sources of electrical energy in East Java, which plays a vital role in maintaining a sustainable electricity supply. The reliability of generator units is a key element in maintaining stable energy distribution. However, the high frequency of sudden generator failures poses serious challenges, such as increased downtime and increased maintenance costs. To address these challenges, this study aims to design a generator maintenance prediction model based on the Naive Bayes algorithm with a predictive maintenance approach. This study uses historical maintenance data and key sensor parameters such as temperature, oil pressure, and vibration as input. The data is analyzed through several stages, namely data preprocessing, selection of relevant features, and labeling generator conditions into three categories: Normal, Warning, and Critical. The Naive Bayes model is trained to classify the data probabilistically to generate predictions of future generator conditions. Model evaluation using accuracy metrics and a confusion matrix shows that the model successfully achieved an accuracy rate of 89% and was able to provide early warnings of potential failures up to 3 days before failure occurs. The implementation of this system is expected to support the shift in maintenance strategies from reactive and scheduled systems to data-driven predictive systems. Implementing failure predictions allows the technical team at the Paiton PLTU to conduct planned maintenance, avoid sudden disruptions, and extend equipment lifespan. Thus, this model has the potential to reduce operational downtime by up to 25%, while providing significant savings in operational and logistics costs. This research also shows that integrating machine learning technology into energy facility management can improve the efficiency and resilience of the overall electric power system.

Class C sand mining activities in Nagari Aia Dingin, Lembah Gumanti District, Solok Regency have been ongoing since 1999 and continue to expand to this day. This mining provides economic contributions to the local community, but on the other hand, it also has a significant impact on the environment, particularly on land cover changes. This study aims to analyze changes in open land caused by sand mining activities, using remote sensing technology as a monitoring tool. The approach used is descriptive quantitative, through the interpretation of Google Earth satellite imagery in 2015 and 2018 and Sentinel-2 imagery in 2024. Spatial analysis was conducted with the help of ArcGIS software to obtain a visual and numerical picture of land cover changes. The results of the study indicate a significant increase in the area of sand mining from 2015 to 2024. In 2015, the mining area was recorded at 8.72 hectares, and increased to 22.14 hectares in 2024. This indicates an increase in mining land area of 13.42 hectares over a nine-year period. Land use conversion has occurred on a massive scale, from dryland forest, scrubland, and dryland areas to open-pit mining areas. This land cover change has the potential to cause environmental degradation such as erosion, reduced biodiversity, and disruption to regional water systems. These findings underscore the importance of stricter monitoring and sustainable spatial planning in natural resource management. The use of remote sensing technology has proven effective in monitoring the dynamics of land use change and can serve as a basis for formulating environmental policies that are more responsive to the impacts of mining activities.

The reciprocal tariff policy has a significant impact on a number of countries, including Indonesia. In this scheme, Indonesian non-oil and gas products are subject to a tariff of 32% when entering the US market. Such a high tariff places Indonesian exporters in a less competitive position compared to other countries that have more favorable trade arrangements with the United States. This condition becomes more complex when viewed in the broader context of the US-EU trade war, which creates uncertainty and turbulence in the global economy. Indonesian exports are affected both directly and indirectly. Indirect impacts can be seen from disruptions to the global supply chain, the slowdown in the world economy, and decreased global demand. As global production networks become increasingly interconnected, any disruption in major economies will ultimately suppress demand for Indonesian export commodities. This means that even if Indonesian products are not directly targeted, the ripple effects of global trade tensions will still hinder Indonesia’s export performance. For instance, reduced consumption in Europe and the US due to rising product prices and inflation will diminish market opportunities for Indonesian goods.On the other hand, direct impacts arise because several Indonesian products have been explicitly subjected to tariffs by the US government. These include textiles and textile products (TPT), electronics and their components, footwear, furniture, and palm oil (crude palm oil/CPO). Such tariffs significantly reduce Indonesia’s competitiveness in the US market, potentially leading to decreased export volumes, lower revenues for domestic industries, and job losses in export-oriented sectors. Furthermore, the policy also makes European products much more expensive in the US market, which worsens the global supply chain, increases logistics costs, triggers inflation, and escalates uncertainty in international trade.

The disruption era, marked by rapid technological development and socio-cultural transformation, presents significant challenges to the spiritual and character formation of young children. In this dynamic context, Christian Early Childhood Education (ECE) teachers are not merely facilitators of learning but are also expected to act as spiritual leaders and moral role models. These responsibilities require a form of leadership that is not only rooted in biblical principles but also adaptive to the shifting demands of the digital age. This study aims to (1) identify the core challenges faced by Christian ECE teachers in the disruption era, (2) examine Christ-centered leadership values, and (3) propose an adaptive spiritual leadership model suitable for Christian ECE settings. Utilizing a qualitative approach through a literature review, data were analyzed using Miles and Huberman’s interactive model, which includes data condensation, data display, and conclusion drawing. The findings highlight two main categories of challenges: external challenges such as the influence of digital media, shifting values in society, and increased parental expectations; and internal challenges including limited teacher capacity, spiritual stagnation, and institutional gaps. In response, this research proposes the "Three-Pillar Adaptive Spiritual Leadership Model," which emphasizes: (1) the teacher's internal spiritual formation and integrity, (2) the implementation of innovative and contextually relevant pedagogical strategies grounded in Christian values, and (3) synergistic collaboration with families and church communities as key support systems. This model provides a conceptual and practical framework for Christian educational institutions to empower teachers in forming resilient, Christ-like character in children. The study contributes to the discourse on faith-based education in the 21st

Hang Nadim International Airport in Batam is a growing air transportation hub, driven by increasing public mobility and aviation activity. Ground handling services in the airside area are crucial, particularly for buses transporting passengers to and from aircraft. However, several issues persist, such as late pick-ups, unsafe bus conditions, and frequent technical disruptions. This study aims to identify the role of PT Lion Group bus drivers in supporting ground handling services and analyze the impact of bus breakdowns on driver performance at the airport. The method used was descriptive qualitative, using observation, interviews, and documentation. Interviews were conducted with drivers, technicians, and Apron Movement Control (AMC) officers to obtain data on technical challenges and operational coordination. Observations were conducted during On-the-Job Training (OJT), and documentation was used to support the validity of the data. The results indicate that bus drivers play a crucial role in ensuring smooth ground handling services, but are frequently hampered by technical breakdowns, such as engine and braking system problems, which impact passenger comfort and On-Time Performance (OTP). Recommendations include improving bus maintenance, providing a backup fleet, and providing technical training for drivers to improve service effectiveness.

Th Advances in information technology have had a significant impact on various aspects of life, including organizational operations. The Mobile Attendance Application (K-Mob) is one implementation of information technology designed to simplify the process of recording attendance in real-time. However, this application is vulnerable to risks that can hamper operations, such as hacking, system failures, and data security issues. This study aims to identify, analyze, and evaluate risks that may affect K-Mob's performance using the ISO 31000 framework. The analysis process is carried out through communication with stakeholders, risk identification, and risk evaluation based on the frequency of occurrence and impact. The results show that significant risks faced include hardware damage, server disruptions, and data misuse. Risk management is carried out through mitigation strategies, such as system updates, infrastructure strengthening, and increasing human resource capacity. With this approach, risks can be minimized, ensuring the sustainability of K-Mob's operations, and improving system reliability. This study recommends regular risk evaluation and the development of adaptive strategies to address evolving threats. The implementation of ISO 31000 has been proven to provide effective guidance in information technology risk management.is.

Illegal logging is a form of environmental crime that has a serious impact on forest destruction, loss of biodiversity, and disruption of ecosystem balance. This study aims to analyze law enforcement efforts against illegal logging practices in the Kwala Serapuh Village Forest area. The method used in this study is an empirical juridical approach with data collection through interviews, field observations, and documentation. The results of the study show that despite the existence of regulations governing forest protection, law enforcement still faces various obstacles such as weak supervision, limited resources of law enforcement officials, and the involvement of individuals in these illegal practices. Efforts made include taking action against perpetrators, increasing patrols, and empowering communities around the forest. However, the effectiveness of law enforcement still needs to be improved through inter-institutional synergy, strengthening the capacity of the apparatus, and increasing community participation. This study concludes that law enforcement against illegal logging in the Kwala Serapuh Village Forest is still not optimal and requires a more comprehensive approach.

Evaluating system security is a crucial step in preventing data breaches and application disruptions. This research focuses on evaluating the security of the E-Office Desa application in Sumedang Regency using the Indeks KAMI as its assessment method. Indeks KAMI is designed to measure the maturity level and effectiveness of information security management within an organization. The data processed was collected from questionnaires distributed to village officials in Sumedang Regency. This evaluation covers six main domains: Governance, Risk Management, Information Security Framework, Asset Management, Information Technology and Security, and Personal Data Protection. Based on the analysis of the data obtained from the questionnaire distribution, the security level of the E-Office Desa application in Sumedang Regency is at maturity level III, which indicates "sufficient" security. However, several improvements and enhancements are still needed in certain security aspects to protect the sensitive data contained within the E-Office Desa application's database.

The impacts of wastewater (liquid waste) include contamination and pollution of surface water and other water bodies utilized by humans, as well as disruption to aquatic life. Wastewater generated from plate washing processes in offset printing industries contains toxic substances that can harm the environment, such as ink pigments, additives, alcohol, and other hazardous chemicals. This study aims to reduce the environmental impact caused by plate washing wastewater. The method used in this research is the Jar Test, which is commonly applied to evaluate the effectiveness of coagulants in water and wastewater treatment. Based on the findings, this method successfully reduced the Total Dissolved Solids (TDS) level by 18%. These results indicate that the use of alum as a coagulant has a significant effect on altering the chemical composition of the plate washing wastewater, thereby contributing to pollution reduction

This research aims to analyze the role of the Department of Transportation in supervising violations of the operational hours of container trucks and bottled drinking water (AMDK) based on the Regional Regulation of Sukabumi Regency Number 17 of 2013. This regulation is implemented as an effort to control the negative impacts of heavy vehicles operating outside the designated hours, including traffic congestion, road damage, and disruptions to the safety of other road users. The research method used is normative-empirical with a field study approach and conducting in-depth interviews with various stakeholders, such as the Department of Transportation, law enforcement officers, and transportation business operators. Research findings indicate that the Transportation Department of Sukabumi Regency has carried out its supervisory role through regular patrol activities, the placement of operational prohibition signs, and conducting socialization to drivers and transportation companies. However, there are still challenges in the implementation of supervision, such as limited human resources, lack of supporting facilities, and minimal coordination between different sectors.

The era of digital disruption marked by the massive spread of hoaxes and disinformation presents a serious challenge for the church in maintaining the unity and purity of teaching. The gap between the need for a relevant leadership response and the lack of practical models that can be applied is a key problem that this study seeks to answer. This study aims to (1) analyze the essential components of an adaptive model of Christian leadership in responding to these challenges, and (2) formulate a practical framework that blends spiritual and educational strategies for church leaders. Using qualitative research methods with a literature review approach, secondary data from various scientific literature are analyzed through qualitative content analysis to build a conceptual model. The results of the study conclude that an effective leadership model is built on three main foundations: the character of a leader with integrity, in-depth knowledge of the digital and theological landscape, and practical skills in communication and education. The most effective framework is one that synergizes a spiritual approach to build the resilience of the faith of the congregation from within, with an educational approach to equip the congregation with digital literacy in the face of external threats.

Digital disruption demands leadership that can adapt to technological transformation, especially in learning organizations such as education, health, and government institutions. This study aims to map the concept of digital leadership, identify research gaps, and provide future research recommendations. The research method used is a Systematic Literature Review (SLR) and content analysis of 728 selected articles from 2016–2024 obtained via Crossref and Publish or Perish. The results indicate that digital leadership requires the integration of e-leadership skills, digital literacy, and social media-based communication. The study identifies gaps such as the lack of longitudinal studies, contextual analysis of specific platforms, and the absence of an integrative framework between digital literacy and communication patterns. The main contribution of this study is a conceptual framework for digital leadership and directions for future research in learning organizations. These findings are essential for designing adaptive strategies to face technological disruption systematically and sustainably.

The use of information technology (IT) in the government sector requires structured risk management to ensure the continuity of public services. The Department of Communication and Information Technology (Dinkominfo), as a digital service provider, faces various potential risks such as network disruptions, hardware failures, and cyberattacks that could interfere with daily operations. This study employs the Failure Mode and Effect Analysis (FMEA) method to identify, analyze, and formulate strategies to mitigate existing IT risks. Through the FMEA approach, each potential failure is evaluated based on its severity, occurrence, and detection capability, which are then used to calculate a Risk Priority Number (RPN). The analysis reveals that the highest RPN values are associated with information system errors, hardware failures, and network overloads. As mitigation measures, the study recommends conducting regular system audits, upgrading network capacity, and performing preventive maintenance on devices. This approach demonstrates that FMEA is an effective method for managing IT risks within government institutions.

The continuous operation of airlock machines in wheat milling facilities plays a critical role in the material handling system, especially in the transfer of grain from ships to silo storage. At PT XYZ, the airlock machine has been identified as the equipment with the highest frequency of downtime over a three-month observation period, leading to significant disruptions in production flow and increased corrective maintenance costs. This study aims to analyze the failure modes of the airlock machine using the Failure Mode and Effect Analysis (FMEA) method and to develop preventive maintenance recommendations based on the highest Risk Priority Number (RPN) values. The research adopts a quantitative descriptive approach, involving field observations, interviews with maintenance personnel, historical breakdown analysis, and machine technical documentation review. The FMEA results indicate that the seal, gear, and bearing are the most critical components, with RPN values of 224, 210, and 192, respectively. These components are prioritized for preventive actions such as regular seal replacement, scheduled lubrication, gear inspections, and motor monitoring. Simulation of the proposed maintenance strategy demonstrates a 66.7% reduction in downtime, from 18 hours to 6 hours per month, and a 43.7% reduction in total maintenance costs, from Rp 9,034,500 to Rp 5,087,500 monthly. These results validate the effectiveness of the FMEA method in identifying risk-prone components and optimizing maintenance planning. It is recommended that PT XYZ institutionalize periodic FMEA updates and establish a cross-functional analysis team to continuously monitor and improve equipment reliability.

Tropical rainforests play a vital role in maintaining global climate stability and supporting the world's biodiversity. This study was conducted in the Elmina Rainforest, Selangor, Malaysia, with the aim of examining the current state of biodiversity and the impact of climate change on rare species. The methods employed included direct observation, in-depth interviews, and literature review. The findings indicate that anthropogenic pressures such as deforestation, pollution, and the effects of climate change have accelerated ecosystem degradation in the Elmina Rainforest. Phenomena such as savannization, pollinator population decline, and phenological disruptions were clearly observed in the field. Although conservation efforts have been initiated, challenges such as limited resources and insufficient community participation remain significant barriers. This study recommends ecosystem-based adaptation and mitigation strategies, ex-situ conservation, and active community engagement as key components for the successful preservation of rare species amid climate change. These findings underscore the importance of a holistic and collaborative approach in ensuring the sustainability of urban tropical rainforests.

The implementation of Hospital Management Information Systems (SIMRS) has become a strategic necessity to improve healthcare service quality and operational efficiency. This study focuses on evaluating the performance of SIMRS in the outpatient registration unit of Nur Hidayah Hospital Bantul, where system disruptions, inconsistent SOP application, and limited user training were identified as core issues. The research aims to assess how well the SIMRS aligns with the Human, Organization, and Technology components through the HOT-Fit model framework. A descriptive qualitative method was employed using purposive sampling to select five informants directly involved in SIMRS operations, including registration officers, IT staff, and the head of the medical records unit. Data were collected through in-depth interviews, direct observation, and documentation, and analyzed thematically based on the HOT-Fit model. The findings show that SIMRS contributes positively to workflow efficiency and data management; however, human factors such as inconsistent training and input errors remain prevalent. Organizational support is visible but lacks structured evaluation routines, and although the technological infrastructure is generally stable, peripheral device and network issues persist. The study synthesizes that effective SIMRS performance requires not only technological readiness but also consistent organizational commitment and continuous human resource development. It concludes that strengthening user competence, formalizing SOP usage, and improving infrastructure are essential to optimize the system's functionality and alignment with the HOT-Fit model.

Obesity is a growing global health issue affecting both developed and developing countries. Despite various preventive efforts, the prevalence of obesity continues to rise. One of the emerging approaches in managing obesity and its complications is by modulating gut microbiota balance. Gut microbiota plays a significant role in energy metabolism, inflammation regulation, and insulin sensitivity. An imbalance in gut microbiota, known as dysbiosis, is frequently observed in obese individuals and has been associated with increased insulin resistance, a key feature of type 2 diabetes mellitus. This study aims to systematically review the relationship between gut microbiota imbalance and insulin resistance in obese patients, based on literature from 2016 to 2024. The literature search was conducted through accredited databases such as PubMed, Google Scholar, and others using the keywords “Gut Microbes,” “Insulin Resistance,” and “Obesity.” From 500 initial articles, 10 highly relevant journals were selected for further analysis. The review findings reveal a strong association between dysbiosis and increased insulin resistance through various mechanisms, including short-chain fatty acid (SCFA) production, activation of inflammatory pathways, and disruption of glucose metabolism. Several studies also suggest that interventions such as probiotics, prebiotics, and fecal microbiota transplantation may improve insulin sensitivity. However, more longitudinal and interventional studies are needed to establish a strong causal relationship. These findings highlight the importance of maintaining gut microbiota balance as a potential strategy in managing obesity and insulin resistance.

The advancement of digital technology has revolutionized the way companies manage their business operations. Operational management is no longer limited to process efficiency, but has evolved into an adaptive, data-driven system supported by advanced technologies such as artificial intelligence, the Internet of Things (IoT), big data analytics, and cloud computing. This article aims to explore the evolution of operational management in the digital era by identifying major challenges such as the digital skill gap, technological infrastructure limitations, and organizational resistance to change, while also examining strategic opportunities such as automation, enhanced efficiency, and data-based decision making. Using a qualitative approach through literature review, this study provides both theoretical and empirical perspectives on the importance of operational innovation in building competitive advantage amid ongoing digital disruption.

The era of technological disruption, driven by the economic logic of "surveillance capitalism," has created a fragmenting digital architecture. The "filter bubble" or "echo chambers" mechanism algorithmically isolates individuals, exacerbated by a psychological condition of being "alone together" wherein individuals actively engage in a "flight from conversation." This convergence of algorithmic and psychological isolation has fueled an "age of outrage" and extreme social polarization. This crisis is fundamentally theological, as it reduces the dignity of the Imago Dei (image of God) to mere exploitable computational data. This research employs a qualitative library study method with a critical-analytical approach to analyze this phenomenon and propose a reconstruction of Christian leadership theology. This article argues that Christian leaders must develop a new theological competency termed "Digital Wisdom." This wisdom is rooted in a holistic theology that resists dualistic fragmentation. This reconstruction is embodied in the leader's role as spiritual (placing the Word of God as authority over algorithms), educational (building digital ethics and combating disinformation), integrity-based (rejecting partisan outrage), and humanistic (reaffirming the primacy of physical encounter and authentic relationship).

The phenomenon of teenage brawls in the Manggarai area, South Jakarta, reflects deviant actions influenced by social and cultural conditions in society. These disputes are triggered by a number of factors, such as competition between groups, lack of parental supervision, limited access to positive activities, and provocations carried out through social media platforms. In this case, Robert K. Merton's anomie theory is applied to analyze how the mismatch between social goals and legitimate means drives teenagers to take the path of violence in order to gain social recognition and group solidarity. This study applies a qualitative descriptive approach using in-depth interview techniques and participant observation of community leaders in RW 04, RW 05, and RW 12. The research findings show that brawls in Manggarai are more than just juvenile delinquent behavior, but are a form of response to social pressure and lack of opportunities for self-realization. The social consequences of these brawls include psychological trauma, social stigma, and disruption to the stability of the surrounding environment. However, the local community has tried to prevent this by implementing a religion-based approach, skills training, and strengthening coordination between regions. This study emphasizes that structural interventions and community-based approaches are key to addressing the root causes of brawls in a comprehensive and sustainable manner.