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The correctional facility SAE L’SIMA in Malang is confronted with two major challenges: the environmental impact of accumulated cow manure and the need to provide meaningful vocational training for inmates to support rehabilitation and reintegration. This community service program was designed to address both issues simultaneously through the introduction and application of biogas technology. The primary objective was to manage livestock waste as an alternative renewable energy source while equipping inmates with practical technical skills applicable beyond the correctional setting. The implementation method employed a participatory approach that involved several stages, including program socialization, site survey, biogas unit design, assembly of a small-scale digester, and subsequent monitoring and evaluation.The results demonstrated that the biogas unit was successfully constructed and operational; however, gas production levels remained below optimal standards. Key challenges identified included unstable temperature conditions, which negatively affected the fermentation process, and technical problems such as leakage in the piping system. These obstacles limited the overall effectiveness of gas generation. Despite these limitations, the project provided significant outcomes. First, it created a working model of sustainable energy generation within the correctional environment. Second, it delivered valuable vocational training for inmates, offering them both theoretical knowledge and hands-on experience in renewable energy technology. Furthermore, the program encouraged inmate participation, fostering teamwork, responsibility, and problem-solving skills that are essential for personal development.In conclusion, although technical barriers remain, this initiative succeeded in establishing the foundation for sustainable waste management and renewable energy application within a correctional facility. More importantly, it highlights the potential of biogas technology not only as an environmental solution but also as a rehabilitative vocational training tool. Continued monitoring, process optimization, and technical refinements are essential for achieving long-term success and scalability of this model in similar institutional contexts.

Tarakan City, as the largest city in North Kalimantan Province, plays a strategic role as a center for economics, trade, and tourism. Good accessibility through its international airport and seaport makes Tarakan a major gateway to various destinations in North Kalimantan. This potential is supported by its rich natural resources and cultural heritage, as well as its position as a distribution hub for goods and services. However, the development of the tourism sector remains hampered by the limited availability of premium accommodation facilities that meet international standards, particularly for domestic and international tourists, as well as business travelers. This final project proposes the design of a four-star hotel in Tarakan City as a solution to increase the attractiveness and competitiveness of the tourism sector. The concept used is Neo-Vernacular Architecture, a design approach that combines traditional architectural values with modern needs and technology. This concept aims to maintain local identity, enrich the building's aesthetic qualities, and create comfortable spaces suited to the local tropical climate. During the design process, a thorough analysis of site conditions, climate characteristics, local cultural potential, and four-star hotel operational standards was conducted. The traditional architecture of the Baloy Mayo traditional house served as the primary inspiration, both in terms of form, decorative elements, and spatial philosophy, resulting in a design that is contextual and representative of Tidung culture as one of Tarakan's identities. The resulting design is expected to provide quality accommodation facilities that not only support the needs of tourists and business people, but also become a modern architectural icon that respects and preserves local culture. The presence of this hotel is expected to contribute to the development of the tourism industry and strengthen the image of Tarakan City as a leading destination in North Kalimantan.

This thesis presents a conceptual analysis of the utilization of Unmanned Surface Vehicle (USV) technology to support the Indonesian Navy (TNI AL) in maintaining maritime security within the ALKI II (Indonesian Archipelagic Sea Lane II) region, in order to enhance operational efficiency and effectiveness. USVs are surface vessels that operate autonomously or are remotely controlled without onboard human presence. These vehicles can be operated from land-based control stations or from other vessels. The main research question addressed in this study is how the development and application of USV technology can support the Indonesian Navy’s mission in safeguarding maritime security within the ALKI II corridor. This study considers USVs as a surveillance asset, representing a technological advancement that can significantly enhance the Navy’s surveillance and monitoring capabilities. It is expected that the implementation of USVs will contribute to improved efficiency in securing and supervising ALKI II, while also promoting effective coordination among relevant stakeholders. Ultimately, the presence of USVs may help to reduce and prevent unlawful activities in the ALKI II waters. This research employs a qualitative methodology. The findings indicate that the use of USVs enhances both operational effectiveness and efficiency, thereby supporting the Indonesian Navy’s mission to secure the ALKI II region. This study aims to provide strategic recommendations to the Indonesian Navy regarding the development and integration of USV technology. It is anticipated that such measures will serve as a significant step toward reinforcing maritime security in the ALKI II corridor.

This article aims to examine the role of leadership in mass media management through a case study of a private broadcasting institution in Indonesia. The focus of the research is on how leadership styles influence organizational performance, editorial decision-making, and operational effectiveness. A qualitative approach was employed, using in-depth interviews, participatory observation, and document analysis on a national private broadcasting institution. The findings reveal that visionary, communicative, and adaptive leadership plays a crucial role in fostering synergy across departments and enhancing responsiveness to the dynamics of the media industry. These results highlight the significance of strategic leadership in maintaining the sustainability and credibility of private broadcasting institutions amid the challenges of digitalization and increasingly competitive markets.

This article examines the role of the Formed Police Unit (FPU) in the perspective of international humanitarian law and international human rights law, particularly in the context of civilian protection in conflict areas. The FPU is an armed police unit deployed in UN peacekeeping missions with a mandate to protect civilians, maintain order, and support post-conflict recovery. Despite its strategic role, the FPU faces legal, operational and socio-cultural challenges. This study uses a normative-juridical approach by analyzing international legal documents, UN operational standards, and academic literature. It is emphasized that the effectiveness of the FPU is highly dependent on human rights-based training, clarity of mandate, logistical readiness, and the ability to build trust with local communities. This article recommends strengthening accountability mechanisms and cross-sector integration in peace missions, so that the FPU is able to carry out its protection mandate substantially and in accordance with applicable international legal principles.

This study aims to analyze the implementation of the Independent Curriculum in mathematics learning planning at SMK Negeri 6 Padang. The Independent Curriculum provides flexibility to teachers in designing contextual, student-centered, and character-oriented learning through the Pancasila Student Profile. This study uses a qualitative method with data collection techniques in the form of observation, interviews, and documentation. The results of the study indicate that SMK Negeri 6 Padang has implemented various important components in learning planning, such as the School Operational Curriculum (KOS), Academic Calendar, Effective Week Details, Annual Program (Prota), Semester Program (Promes), Learning Achievements (CP), Learning Objectives (TP), Learning Objective Achievement Criteria (KKTP), and Learning Objective Flow (ATP). However, the implementation of the Independent Curriculum still faces challenges, especially in the integration of the Pancasila Student Profile Strengthening Project (P5) and the application of differentiated learning. Thus it can be concluded that the Learning planning is very effective, namely 82.25%. Therefore, further training is needed to improve the quality of learning planning based on the Independent Curriculum. This study concludes that although mathematics learning planning has referred to the principles of the Independent Curriculum, ongoing training and systematic support are still needed to optimize the implementation of the curriculum in vocational schools.  

The rapid growth of RT/RW Net-based internet services among the community has driven the need for an integrated, efficient, and easy-to-use billing system. The self-help RT/RW Net model often faces challenges in terms of administrative management, especially related to customer recording, billing, and financial reporting which are still done manually. Common problems faced by partners are payment systems that have not been digitized and minimal transparency in data collection and tracking of customer transactions. The purpose of this activity is to design and implement a web-based billing application built using the Laravel framework. This application is designed to facilitate the process of managing customer bills, monitoring internet service usage, and preparing financial reports automatically and in a structured manner. The method of implementing the activity includes the system design stage, training partners in using the application, and assistance in direct implementation in the RT/RW Net operational environment. The results of the activity show that the developed system has succeeded in automating most of the billing process and increasing the efficiency of administrative management by up to 80%. In addition, this system also has a positive impact on increasing transparency and accuracy of customer data. Suggestions for further development include the addition of automatic payment features through integration with payment gateways, as well as improving the user interface to make it more responsive and user-friendly.

This research focuses on the development and evaluation of an Adaptive Edge-AI framework designed to optimize real-time data processing and decision-making in resource-constrained environments, specifically within smart city infrastructures. The primary problem addressed is the challenge of minimizing latency, reducing energy consumption, and ensuring the reliability of Cyber-Physical Systems (CPS) when using Internet of Things (IoT) devices. The objective of the study is to assess the effectiveness of this framework in real-world smart city applications such as traffic monitoring, environmental sensing, and smart utilities management. The proposed method integrates lightweight AI models, edge computing, and adaptive resource management techniques, including Federated Learning and Neural Architecture Search, to ensure optimal performance while addressing hardware constraints. The main findings reveal that the framework significantly improves real-time inference speed, reduces energy consumption of IoT devices, and enhances CPS reliability by minimizing communication delays and ensuring continuous system operation despite network disruptions. The application of this framework to smart transportation and urban utilities further demonstrates its potential to optimize city management processes. The study concludes that the Adaptive Edge-AI framework offers a promising solution for smart cities, enhancing operational efficiency, sustainability, and resilience. It is recommended for integration into smart city infrastructures to enable better resource management and decision-making in real-time applications.

Indonesia, as the world's largest archipelagic nation, holds a strategic position while simultaneously facing significant challenges in maintaining the sovereignty and security of its maritime territory. Increasingly complex maritime threats, such as illegal fishing, smuggling, and potential geopolitical conflicts, demand a transformation in maritime defense strategies to be more efficient and sustainable. In an era of increasing global awareness of the climate crisis, the maritime sector, including the defense sector, is being encouraged to decarbonize through the implementation of environmentally friendly ship technology. This research uses a literature review approach by examining various findings related to sustainable propulsion technology innovations relevant to the development of Indonesia's maritime defense fleet. The study results show that a hydrogen- and battery-based hybrid propulsion system can reduce carbon emissions by up to 73% and increase energy efficiency by 35%. In addition, wind-assisted propulsion sistem (WAPS) technology such as Flettner rotors and wing-sails contributes significantly to reducing fuel consumption by up to 30%, while extending ship cruising range without the need for intensive refueling. Meanwhile, the application of Computational Fluid Dynamics (CFD)-based propeller design optimization has been proven to reduce energy consumption by 13.2% and reduce noise levels by up to 15 dB, which greatly supports the needs of stealth operations in military missions. This study concludes that the implementation of environmentally friendly ship technology not only provides benefits in terms of energy efficiency and emission reduction, but also strengthens the operational resilience and strategic competitiveness of the Indonesian naval fleet amidst the dynamics of global maritime security. Thus, the Green Navy concept can be seen as a relevant and urgently needed sustainable defense strategy.

This article discusses the four-month internship experience at PT Pos Indonesia Regional V Surabaya, specifically in the Finance and Accounting section, with a focus on evaluating the effectiveness of using the SAP S/4HANA system in recording financial transactions. The research used a descriptive qualitative approach with a literature study method that was analyzed thematically. The results showed that SAP supports real-time transaction recording, is integrated between modules, has an adequate audit trail, and increases HR competence in terms of accuracy and work efficiency. The conclusion shows that the SAP system has proven effective in supporting operational efficiency and internal control of the company, while providing practical experience and important learning for students in facing the digital and integrated world of work.

Employee performance is the result of an individual's efforts in carrying out their duties and responsibilities, which is reflected in the quality and quantity of work achieved. PT. Mitra Tunas Harapan, a company engaged in providing construction services in Cilegon, has various activities that include planning, design, project supervision, and construction management services. To achieve company goals, employee performance is one of the important factors influencing the company's operational success. Several factors believed to influence employee performance include communication and workload. This study aims to analyze the effect of communication and workload on employee performance at PT. Mitra Tunas Harapan. This study involved a population consisting of 36 employees at the company. The sampling technique used was nonprobability sampling with a total sampling method, meaning the entire population was sampled in this study. The results showed that communication partially had a positive and significant effect on employee performance. This indicates that good communication between superiors and employees, as well as between employees, can improve task understanding and streamline work processes, which ultimately contribute to improved performance. In addition, workload was also shown to have a positive and significant effect on employee performance. A workload that matches employee capacity can improve their productivity and work quality. Simultaneously, both communication and workload have a positive and significant impact on employee performance. Therefore, companies need to address both factors to improve employee performance and optimally achieve company goals. Furthermore, this study highlights the importance of effective communication management within organizations. Clear and open communication between managers and employees can reduce misunderstandings and improve coordination in carrying out tasks.

PT Udara jadi Bersih Bekasi is a company engaged in testing Heating, Ventilation, and Air Conditioning (HVAC) systems. So far, the process of recording test results is still carried out manually using paper media. This process poses a number of obstacles, such as delays in recording, potential input errors, and limitations in accuracy and data storage. This condition also has an impact on delays in the submission of test results information to supervisors, who should need fast and accurate data for decision-making. To answer this problem, a web-based application is needed to design a web-based application that is able to digitize the entire workflow of recording and reporting HVAC test results. With a web-based system, data can be managed centrally, more structured, and easily accessible at any time. This application is also equipped with QR Code technology to speed up access to test results. Supervisors and technicians only need to scan the code for complete information, so they no longer rely on manual searches that are time-consuming and prone to serious errors in technical documentation. The design of this application uses the Waterfall method which consists of the stages of needs analysis, system design, implementation, testing, and maintenance. UML is used as a tool to describe business processes and system activity flows in detail, so that development can be carried out more systematically, efficiently, and in a targeted manner according to applicable software engineering standards. With the implementation of this application, PT Udara jadi Bersih Bekasi is expected to be able to improve operational efficiency, reduce recording errors, and speed up the information distribution process. In the end, this digitalization will support companies in providing services that are more professional, accurate, innovative, reliable, and according to the needs of the modern HVAC industry in the era of global digitalization.

The rapid development of information and communication technology has opened up significant opportunities to enhance service efficiency in various fields, including the beauty industry. Soraaya Studio, which offers a range of beauty services, currently still manages appointment scheduling manually. This manual system leads to several challenges, such as difficulties in efficient schedule management, data duplication, recording errors, and disorganization in the service reservation process. Furthermore, communication with customers regarding schedule confirmation becomes less effective. With the increasing number of customers, this manual scheduling system is no longer able to meet the growing complexity of operational needs.To address these issues, a web-based appointment scheduling system has been designed, which is integrated and user-friendly. This system is built using the PHP programming language with a MySQL database and features a responsive interface, making it easily accessible from various devices, including desktops and mobiles. Key functionalities provided include real-time creation, modification, and cancellation of appointments, management of service availability, and automated notifications via email or text messages to customers and studio staff. The implementation of this system aims to improve the accuracy and speed of the scheduling process, reduce manual errors, and facilitate schedule monitoring by management and staff, thereby enabling Soraaya Studio to provide a more professional and satisfying service to its customers.

This study investigates how data visualization helps retail companies make Business Intelligence (BI)-based decisions. The study processed one year of sales data with a quantitative descriptive approach to find seasonal patterns, performance by region, and customer consumption tendencies. The analysis results show that BI software such as Microsoft Power BI can visualize data more easily and accelerate understanding of business performance. Strategic decisions such as promotional planning and product inventory management are more effective with interactive visualization, which allows decision makers to see data in a more understandable way. The study found that data visualization in BI systems can help retail businesses make better decisions. These results show the importance of incorporating BI into a company's operational processes and using interactive visualization to improve overall business performance.

This study aims to analyze the effect of leverage, liquidity, and company size on profitability in food and beverage companies listed on the Indonesia Stock Exchange (IDX) during the 2019–2023 period. Testing was conducted both partially and simultaneously to obtain a comprehensive picture of the relationship between variables. This study uses a quantitative approach with a sample of 14 companies selected through a purposive sampling method based on certain criteria, such as the completeness of annual financial reports during the study period and the availability of relevant data. The data used are secondary data obtained from the official IDX website (www.idx.co.id), including annual financial reports containing information on total assets, total liabilities, total equity, financial ratios, and the company's profit level. Data analysis was carried out using the multiple linear regression method using SPSS version 26 software, so that the effect of each independent variable on the dependent variable can be tested both individually and together. The results of the study indicate that simultaneously, the variables leverage (X1), liquidity (X2), and company size (X3) have a significant effect on profitability (Y). However, partial test results revealed that leverage had a negative and significant effect on profitability, indicating that a high proportion of debt can reduce a company's ability to generate profits. Meanwhile, liquidity and company size were not shown to have a significant influence on profitability, suggesting that these factors are not the main determinants of profit performance in this sector. This study implies that food and beverage company management needs to carefully consider capital structure to maintain profitability. For further research, it is recommended to add other variables such as operational efficiency, sales growth, and dividend policy, as well as extend the observation period for more in-depth and representative analysis results.

This paper investigates how Big Data Analytics (BDA) can accelerate the transition to a low-carbon digital economy. We present a systematic literature-based research framework (2015–2025) that synthesizes applications of BDA in energy systems, transportation, industry and supply chains. The methodology combines systematic review and conceptual modelling to identify pathways through which BDA reduces emissions: (1) demand-side optimization, (2) operational efficiency, (3) predictive maintenance and (4) data-driven policy and market instruments. Results highlight concrete case examples smart grids, digital twins, and green supply-chain analytics and quantify benefits reported in recent literature. Key challenges such as data governance, carbon costs of computing, and policy integration are discussed. The paper concludes with policy recommendations and a research agenda to align digitalization with decarbonization goals.

This research investigates the impact of several key factors on customer satisfaction at the KAI Company, specifically for train services operating at Poncol Station in Semarang. Classified as causal research, the study focuses on identifying how variables such as electronic service quality (e-quality), complaint handling, station facilities, and punctuality contribute to improved satisfaction among passengers. The research population consists of all train users at the station, without a fixed number, while a sample of 100 respondents was selected using the Lemeshow formula. Data collection methods involved the use of structured questionnaires and interviews with passengers to gain both quantitative and qualitative insights. The data analysis revealed that 85% of customer satisfaction levels can be attributed to the four main factors mentioned: the quality of digital services, the effectiveness of complaint resolution, the availability and quality of facilities, and adherence to schedules. The remaining 15% of satisfaction is influenced by other, unexamined variables. Each of the four tested variables was found to have a statistically significant individual (partial) impact on customer satisfaction. Furthermore, the simultaneous (overall) testing confirmed that these factors collectively have a strong and meaningful effect on how passengers perceive the quality of the rail service. The findings emphasize the importance of consistently improving these specific operational areas to enhance customer experiences. In particular, maintaining service reliability, responding to customer complaints efficiently, improving digital interfaces, and upgrading station facilities can lead to greater satisfaction and potentially increase customer loyalty. The study suggests that service providers like KAI must adopt a customer-centered approach that focuses on both digital and physical aspects of the travel experience to remain competitive in the transportation industry.

Accurate evaluation of head losses is essential in industrial systems transporting viscous chemical fluids, such as sodium hydroxide (NaOH), to ensure hydraulic efficiency and operational reliability, particularly in chlor alkali plants. This study analyses major and minor flow losses in the NaOH piping system at PT X Chlor Alkali Plant, Porsea, and evaluates the pipe design's hydraulic feasibility. After defining system parameters—including fluid properties, pipe geometry, and the number and type of fittings—technical calculations were conducted to assess flow profiles and pressure losses along two main pipe routes. A quantitative analysis using the Moody diagram and operational data reveals that minor losses dominate, contributing over 75% of total head loss in both routes. The total head loss remains within the pump's rated capacity (18 m), though with a narrow margin. A pipe diameter of 0.114 m produces a flow velocity of 0.79 m/s, aligning with recommended industrial standards for corrosive fluids. The use of Sch.80 stainless steel proves effective in minimizing frictional losses, particularly under turbulent flow conditions. These findings highlight the critical role of fitting configurations and material selection in optimizing chemical process piping systems.

This study aims to analyze hazard identification in order to improve operational safety aspects in the service road area of I Gusti Ngurah Rai International Airport, Bali. This area is a vital part of the airside that has a high level of activity and complex safety risks, thus requiring special attention to potential hazards that may arise. The research method used is a qualitative descriptive approach, with data collection techniques through direct observation in the field, in-depth interviews with related personnel, and documentation studies relevant to the airport's safety system and operational procedures. The results of the study indicate that there are still significant potential safety risks in the service road area. Some key findings include haphazard parking practices by Ground Support Equipment (GSE), undisciplined behavior of ground handling personnel, and passenger movement in the operational area without adequate officer supervision. These problems are largely caused by weak supervision from the Apron Movement Control (AMC) unit, as well as the low level of understanding and implementation of safety culture among field workers. Through the process of identifying and assessing risks using the Hazard Identification and Risk Assessment (HIRA) approach, researchers succeeded in mapping the severity of risks and developing appropriate mitigation measures, such as regulating GSE parking procedures, improving safety training, and adding supervisory personnel at vulnerable points. It is hoped that the findings of this study can be a basis for consideration for the management of I Gusti Ngurah Rai International Airport, Bali, in formulating policies and strategies for improving operational safety as a whole, especially in implementing a more effective and sustainable Safety Management Sistem (SMS).  

PT Perkebunan Nusantara I (PTPN I) is an Indonesian State-Owned Enterprise (BUMN) specializing in plantation operations, particularly the cultivation and processing of primary commodities, including rubber, coffee, and tea. Additionally, the company engages in secondary ventures such as tobacco production, plastic sack manufacturing, and asset optimization. As of December 1, 2023, PTPN I functions as a subholding entity with regional offices strategically located in Sumatra, Java, and Sulawesi to enhance operational efficiency. The company was originally established in Aceh in 1961 as PPN Kesatuan Aceh, marking the beginning of its long-standing presence in the industry.This study aims to analyze the impact of transformational leadership, internal communication, and work ability on both organizational commitment and organizational performance at PTPN I’s Surabaya region. Utilizing a quantitative causal-explanatory approach, primary data was collected through structured questionnaires. The target population comprised employees of PTPN I in Surabaya, with 100 respondents selected via purposive sampling. Data analysis techniques included descriptive statistics and SEM-PLS (Structural Equation Modeling-Partial Least Squares). Findings reveal that transformational leadership, internal communication, and work ability significantly and positively influence organizational commitment. Likewise, transformational leadership, work ability, and organizational commitment exhibit a significant positive relationship with organizational performance. However, although internal communication has a favorable effect, its impact on organizational performance is not statistically significant in this context.