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Sultan Thaha Airport, Jambi, is one of the airports that has implemented a digital Airport PAS application process through a website-based system. This application information system is designed to improve efficiency and effectiveness in the PAS (Personal Airport Security) application process, which was previously done manually. With this system, it is expected that the entire administrative process can run faster, more transparently, and minimize errors. The purpose of this study is to analyze the implementation of the e-PAS information system, and to identify obstacles that arise in its implementation in the work environment of Sultan Thaha Airport, Jambi. The research method used is descriptive qualitative, with a blackbox testing approach to test the system's functionality. Data collection techniques were carried out through direct observation, interviews with 3 PAS applicants and 6 operational officers, and documentation related to system use. The data obtained were analyzed through the process of data reduction, data presentation, as well as drawing conclusions and verification. Data validity testing was carried out using the source and technique triangulation method. The results of the study indicate that the implementation of the e-PAS system has run quite well. However, several technical challenges remain, hindering the smooth running of the process, such as disruptions to the data input system, challenges with information validation, and suboptimal or incomplete system features. These findings provide important input for system developers to make continuous improvements to ensure more effective and efficient services in the future. Improved training for staff is also necessary to ensure optimal system utilization. Furthermore, regular evaluations of system performance are mandatory to maintain consistent service quality.

This research aims to design and build a web-based syar'i clothing inventory information system at Umama Gallery Yogyakarta. The background of this research is based on the problem of inventory management which has been done manually, which often causes obstacles such as delays in stock information, potential recording errors, wasted paper, and difficulties in preparing inventory reports quickly and accurately. To overcome these problems, a web-based information system was developed by referring to the Software Development Life Cycle (SDLC) Waterfall model, which includes the stages of planning, needs analysis, design, implementation, and testing. Research data was obtained through interviews with store managers and literature studies to support the analysis and design of the system. The implementation results show that the inventory information system built is able to simplify the process of recording and monitoring inventory in real-time, thereby helping to reduce the potential for recording errors and speeding up the reporting process. In addition, this system also reduces dependence on physical documents, making it more environmentally friendly and efficient in the use of resources. Available features include data management of goods, suppliers, users, incoming and outgoing goods transactions, and user account management. The integration of these features supports comprehensive inventory management, improves operational efficiency, and facilitates management in making accurate, data-driven decisions. With this system, Umama Gallery Yogyakarta has gained an effective, reliable, and integrated tool to support smooth operations and more modern and professional inventory management. Similar systems have the potential to be implemented in similar businesses to improve inventory management quality and competitiveness in the digital age.

The development of information technology has driven significant transformations in human resource (HR) management, including in the aspects of compensation and job description adjustments. Digitalization in HR management not only simplifies administrative processes but also has the potential to increase employee satisfaction and loyalty through transparency, speed, and ease of access to information. This study aims to analyze the effect of digital compensation and job description adaptation on employee loyalty at AK-Tekstil Solo, a labor-intensive company in the textile industry. The research method uses a quantitative approach with a survey design. Data were collected through questionnaires distributed to a number of employees as respondents, then analyzed using multiple regression analysis techniques to test the effect of independent variables on the dependent variable. Digital compensation in this study was measured by aspects of transparency, payment speed, and ease of access, while job description adaptation was assessed by role clarity, task flexibility, and communication between management and employees. The results show that digital compensation designed with a transparent, accurate, and easily accessible system contributes positively to job satisfaction, which in turn increases employee loyalty to the company. Similarly, job description adaptation carried out in a structured manner and accompanied by clear communication has been proven to strengthen employee commitment and attachment to the organization. These findings provide strategic implications for company management, particularly in labor-intensive industries, to develop digital-based compensation systems that are not only efficient but also foster trust and fairness. Furthermore, management needs to ensure job descriptions are adaptive to changes in the work environment so that employees continue to feel valued and relevant to the company's goals. Implementing this strategy is expected to create a stable, productive, and sustainable work environment.  

Public Fuel Filling Stations (SPBU) are important facilities that provide various types of fuel such as gasoline, diesel, and Pertamax to meet the needs of motorized vehicles. The existence of SPBU greatly helps the public in obtaining fuel at a more economical price compared to purchasing retail. However, the transaction system at SPBU generally still uses conventional methods, such as cash payments or the use of debit/credit cards that have not been fully integrated with an efficient digital system. The use of RFID (Radio Frequency Identification) technology has been implemented as a non-cash transaction method at several SPBUs, but this system still has various weaknesses, such as limited device compatibility and delays in transaction processing. This prompted the author to develop the concept of an independent SPBU based on modern technology that is more efficient and secure. The proposed innovation includes the use of contactless smart cards and coin acceptors for the payment system, allowing users to make self-service transactions without operator involvement. In addition, the author also added several supporting components such as proximity sensors, which function to detect the presence of vehicles or people around the SPBU area. These sensors can help in saving electrical energy by activating the system only when needed. Another component is a vibration sensor, which plays a crucial role in detecting excessive vibrations that could potentially cause leaks. If excessive vibration is detected, the system automatically closes the solenoid on the pump to prevent the risk of fire or damage. By integrating this technology, the autonomous gas station system is expected to improve operational efficiency, user convenience, and safety during the automatic refueling process. This development is expected to be an innovative solution for modernizing the gas station system in Indonesia.

Building Information Modeling (BIM) is a technology increasingly used in the modern construction industry, particularly to improve communication efficiency and collaboration between stakeholders. This technology enables the integration of project data and information into a comprehensive digital model, allowing all involved parties to access, verify, and update information in real time. This study aims to evaluate the strategic role of BIM as a communication medium in the Integrated Project Delivery (IPD) approach, focusing on the planning stage involving the disciplines of architecture, structure, and Mechanical, Electrical, and Plumbing (MEP) systems. The IPD approach emphasizes cross-disciplinary collaboration from the early stages of a project to optimize outcomes, reduce risks, and accelerate completion. The research methods used are literature review and case study analysis of various projects that have implemented BIM within the IPD framework. The data analyzed include the effectiveness of information exchange, inter-team coordination, and early identification of design conflicts. The study results show that BIM significantly improves information transparency among stakeholders, minimizes the risk of miscommunication, and accelerates the decision-making process through accurate and integrated data visualization. BIM models also facilitate the detection of potential conflicts, such as clashes between structural and MEP elements, before entering the physical construction phase, thereby reducing repair costs and delays. Furthermore, the use of BIM in IPD fosters a more collaborative work culture, where architects, engineers, and contractors can work together to solve problems quickly and effectively. Thus, BIM has proven to play a crucial role as a primary communication tool in IPD implementation, while also serving as a crucial foundation for achieving efficient, integrated, and high-quality construction project management.

Quality education services are closely linked to the effectiveness of financial and asset governance within local government institutions. This study aims to explore in depth the strategic role of the Finance and Assets Subdivision in enhancing the effectiveness of education services under the Central Kalimantan Provincial Education Office. Using a descriptive qualitative approach, data were collected through interviews, observation, and documentation. The analysis was carried out following the Miles and Huberman model, which involves data reduction, data display, and conclusion drawing. The results indicate that the Finance Subdivision plays a critical role in needs-based budget planning, ensuring that financial allocations align with educational priorities and policies. It manages key funding sources such as School Operational Assistance (BOS) and Special Allocation Funds (DAK) with a focus on transparency, accountability, and timely reporting. Meanwhile, the Asset Subdivision contributes through systematic recording, equitable distribution, and optimal utilization of regional property. These responsibilities are supported by regular training programs and consistent monitoring to ensure that facilities remain functional and beneficial for educational purposes. The implementation of integrated digital management systems, such as SIMDA, SIKD, and SIPKD, has significantly improved data accuracy, accessibility, and overall management efficiency. These systems allow for more transparent governance and facilitate informed decision-making at the institutional level. The study concludes that the active and coordinated role of the Finance and Assets Subdivision forms a strong foundation for professional, efficient, and sustainable education governance. The findings suggest that strengthening human resource capacity, enhancing interdepartmental coordination, and further integrating digital information systems are essential strategies to improve the quality and equity of education services in the region. Such improvements will contribute to achieving better educational outcomes and fostering public trust in government-managed education services.

Micro, Small, and Medium Enterprises (MSMEs) are the backbone of Indonesia's economy with a contribution of around 60% to the Gross Domestic Product and the absorption of more than 90% of the national workforce. In the culinary sector, MSMEs face various challenges, especially in terms of limited access to technology, efficient logistics management, and the implementation of hygiene practices that meet standards. This community service activity aims to empower culinary MSMEs through a structured and comprehensive approach that includes technology training, managerial capacity building, and the implementation of food safety standards. The method of implementing activities consists of three main stages: (1) preparation and planning, (2) implementation of training and mentoring, and (3) evaluation and follow-up. The training is focused on the use of digital technology for business operations, financial and logistics management, and hygiene practices in food production. Mentoring is carried out intensively to ensure that knowledge and skills transfer is effective. The results of the activity showed a significant increase in the understanding and skills of culinary MSME actors. Partners are able to adopt simple technology to support business operations, improve management systems, and implement better hygiene practices. In addition, this activity succeeded in building a collaborative network between MSMEs, academics, local governments, and the private sector, which strengthened the local business ecosystem. However, challenges in the form of limited financial resources and the need for ongoing assistance are still major concerns. Overall, this program makes a real contribution to increasing the competitiveness of culinary MSMEs, encouraging local economic growth, and supporting the development of an inclusive and sustainable business ecosystem based on community empowerment.

This community service project aims to improve the quality of street lighting around the Waringin Tunggal Studio, located in Soneyan Village, Pati Regency. As part of efforts to improve community comfort and safety, this project focuses on addressing the issue of inadequate lighting that can impact community activities, particularly at night. Inadequate lighting around the studio creates discomfort and reduces the sense of security for both studio users and the local community. The project began with a thorough inspection of the lighting conditions around the studio. The next step was to design technical solutions to improve the existing lighting system, including increasing the number of lamps and using more efficient types of lamps in terms of energy consumption and light distribution. Furthermore, good collaboration with village officials and other relevant parties was crucial for the smooth implementation of this project. The improvement process was carried out with a focus on energy efficiency and durability, ensuring long-term benefits. The results of this project showed a significant improvement in the quality and coverage of lighting around the Waringin Tunggal Studio. This improvement not only increased comfort but also increased the sense of security for studio visitors and the surrounding community. Access to the studio at night has become easier and safer, positively impacting the arts and cultural activities held there. A post-event evaluation showed increased community participation in the studio's evening events. This success demonstrates that improved lighting can encourage community participation in community activities. Going forward, it is hoped that this activity can be enhanced by utilizing renewable energy, such as solar power, to ensure optimal lighting even during power outages, thus ensuring the desirability of this activity in the future.

The management of incoming and outgoing correspondence in an effective and efficient manner is a crucial aspect in supporting the performance of government organizations, including the Civil Service and Human Resource Development Agency (BKPSDM) of Nabire Regency. As an institution responsible for handling personnel administration, BKPSDM regularly receives and sends a large volume of official letters every month. However, the archiving process is still conducted manually using physical media such as folders, filing cabinets, and record books. This manual system presents several drawbacks, including the risk of data loss, delays in document retrieval, recording errors, and the potential for physical damage to archives due to environmental factors. This study aims to design and develop a digital archiving system for incoming and outgoing letters using the Waterfall software development methodology. The Waterfall method is selected because of its structured approach and suitability for projects with clearly defined requirements. The stages in this method include requirements analysis, system design, implementation, testing, and maintenance. The result of this research is a web-based letter archiving information system that can efficiently record, store, and retrieve correspondence accurately and securely. The implementation of this system is expected to improve the efficiency and accountability of letter archive management at BKPSDM Nabire Regency and support the acceleration of digitalization in government administrative services.

This community service activity aims to increase the capacity of disaster archival document management and strengthen financial governance within the Muhammadiyah Disaster Management Center (MDMC) in Palangka Raya City. Orderly, systematic, and accountable archive management is a crucial factor in supporting a rapid, precise, and coordinated disaster response. Furthermore, transparent and efficient financial governance is the foundation for program sustainability and public trust in the organization. This training program is designed to provide MDMC administrators and volunteers with a comprehensive understanding of the principles, procedures, and best practices in disaster archive management and organizational finances. The implementation method includes presentations through interactive lectures combined with group discussions to identify real-world problems and solutions. Participants also have the opportunity to engage in hands-on practice, such as compiling disaster archival documents, managing archive databases, and creating simple financial reports in accordance with nonprofit accounting standards. Furthermore, this training introduces national regulations related to archiving and data protection, ensuring that practices are aligned with statutory provisions. The results of the training demonstrated an increased understanding of the participants regarding the importance of archive management and financial governance, as evidenced by their ability to systematically organize documents and present accountable financial reports. It is hoped that, after the training, participants will be able to consistently apply these principles in MDMC's operational activities. This will create a well-organized documentation system, accountable financial management, and an MDMC institution that is increasingly professional, effective, and responsive to community needs in emergency situations. This activity is a strategic step to strengthen MDMC's role as the vanguard in disaster management at the local and national levels.

Dependence on fossil fuels, such as gasoline and diesel, has become a global issue that affects environmental sustainability and energy security. Increasing greenhouse gas emissions, decreasing natural resource reserves, and instability of global energy prices encourage the need for innovation in motor vehicle fuel systems. This study aims to assess fuel efficiency and engine performance on a 110 CC motorcycle with a standard compression of 10.7:1, by utilizing a mixture of RON 90 gasoline and alcohol. The main focus of the study is to compare the effect of varying alcohol content on engine power output, with mixtures of E12.5, E17.5, and E22.5. The method used is an experimental method with three variables, namely the independent variable (type and content of fuel mixture), the dependent variable (engine power), and the control variables (engine condition, temperature, and testing method). Testing was carried out using a combination of iridium spark plugs and standard spark plugs, as well as variations in Pilot Jet sizes 34 and 35 on aftermarket carburetors. Each combination was tested to determine its effect on the maximum engine power. The results showed that a blend of E12.5 fuel with Pilot Jet 35 and iridium spark plugs produced the highest power output compared to other tested combinations. This combination was proven to optimize combustion in the combustion chamber, thereby improving engine efficiency and performance. Conversely, increasing the alcohol content above E12.5 did not provide a significant increase and even tended to decrease power due to alcohol's lower calorific value than gasoline. The conclusion of this study is that the use of an aftermarket carburetor with Pilot Jet 35 and iridium spark plugs, combined with an E12.5 fuel blend, can be an effective alternative for improving the performance of a 110cc motorcycle. These findings are expected to serve as a reference for the development of more efficient and environmentally friendly blended fuel technology.

The development of electric motor vehicles drives the need for efficient, stable, and reliable energy storage systems. This study aims to compare the performance of three types of batteries commonly used in electric motorcycles, namely LiFePO4 (Lithium Iron Phosphate), Li-Ion (Lithium Ion), and Lead Acid (Lead Battery). The parameters tested include energy efficiency, capacity, and performance during the starting process. The test method was carried out for 60 minutes through a charging and discharging process (charge-discharge), using a pzem-015 measuring instrument and a multimeter to monitor the current, voltage, input/output power, and battery capacity. The test results show that the LiFePO4 battery provides the best performance. This battery has the highest efficiency and capacity, reaching 1430 mAh, with a stable average efficiency in the range of 50–60%. In addition, LiFePO4 also produces the highest current and voltage when used for starting, making it very reliable for the initial needs of electric motorcycle operation. Meanwhile, the Li-Ion battery recorded a high initial efficiency of up to 87.27%, but this efficiency decreased and then stabilized at 72%, with a recorded capacity of 1360 mAh. Although its efficiency is quite good, its long-term stability is still below that of LiFePO4. Meanwhile, the Lead Acid battery showed the lowest performance. Its efficiency continued to decline to only 26.3% at the end of the test. Its capacity is 1380 mAh, but the increase is unstable, indicating inconsistencies in power storage and discharge. Based on these results, LiFePO4 batteries are recommended as the main choice for electric motorcycles because they excel in aspects of energy efficiency, performance stability, and long-term durability.

The loading in and loading out processes are crucial stages in event production. Although often invisible to the audience, they have a direct impact on the smooth running and quality of the event. This study aims to examine the implementation of the loading process at the Pancaverse event held at Depok City Square, focusing on technical dynamics, field challenges, and the implemented solution strategies. This study uses a descriptive qualitative approach through a case study, where data was obtained through field observations, in-depth interviews with five key informants, and technical documentation of the event. The results show that the success of the loading process is highly dependent on several key factors, including detailed planning, clear work zone division, and responsive inter-team communication. Thorough planning before the event begins is crucial to minimize technical errors during the loading process. Furthermore, a structured work zone division facilitates coordination between teams and accelerates workflow. Effective communication between teams, both internally and with external parties, also significantly influences the smooth running of the loading process. However, external factors such as bad weather and miscommunication between vendors are major challenges faced. These challenges can impact the smooth logistics and the overall loading process. Therefore, risk mitigation is carried out through cross-checking logistics, intensive coordination with external parties, and providing backup plans in case of obstacles. The use of a logistics checklist and tagging system has also proven effective in accelerating the identification of goods during unloading, thereby streamlining the loading and unloading process. Overall, this study emphasizes the importance of technical and managerial readiness in handling the loading process as an integral part of event production. These findings are expected to provide practical insights for event industry players in designing and implementing more adaptive and efficient logistics strategies in the field.

Limited sanitation facilities among street vendors, particularly those selling meatballs, chicken noodles, and porridge, often pose a problem that impacts food safety. One common practice is repeatedly washing bowls and spoons with just a bucket of water, followed by drying the utensils with a cloth. This contaminated water can transmit pathogenic microorganisms that cause foodborne illnesses, increasing the risk of health problems for consumers. This problem requires a practical solution that street vendors can implement, taking into account limited space, mobility, and operational costs. This community service activity used a pre-experimental design method with a simple technological engineering approach to improve the sanitation of tableware. The innovation developed was a portable bowl washer made from used mineral water gallons, modified to be mobile, efficient, and water-efficient. The manufacturing process included design, assembly, testing, and evaluation with street vendors. Success was measured by observing the level of cleanliness of the tableware before and after use, as well as assessing the level of satisfaction and ease of use by the vendors. The results showed that the implementation of this portable sanitation device increased the effectiveness of tableware washing, reduced the repeated use of dirty water, and minimized the risk of cross-contamination. Partnering vendors stated that the device is practical, lightweight, and doesn't disrupt their sales activities. They hope this innovation will be replicated by other vendors and that local governments will consider implementing it as a standard for mobile food sanitation. This effort will not only improve the hygiene of eating utensils but also contribute to preventing foodborne illnesses in the community.

This community service activity aims to increase the capacity of disaster archival document management and strengthen financial governance within the Muhammadiyah Disaster Management Center (MDMC) in Palangka Raya City. Orderly, systematic, and accountable archive management is a crucial factor in supporting a rapid, precise, and coordinated disaster response. Furthermore, transparent and efficient financial governance is the foundation for program sustainability and public trust in the organization. This training program is designed to provide MDMC administrators and volunteers with a comprehensive understanding of the principles, procedures, and best practices in disaster archive management and organizational finances. The implementation method includes presentations through interactive lectures combined with group discussions to identify real-world problems and solutions. Participants also have the opportunity to engage in hands-on practice, such as compiling disaster archival documents, managing archive databases, and creating simple financial reports in accordance with nonprofit accounting standards. Furthermore, this training introduces national regulations related to archiving and data protection, ensuring that practices are aligned with statutory provisions. The results of the training demonstrated an increased understanding of the participants regarding the importance of archive management and financial governance, as evidenced by their ability to systematically organize documents and present accountable financial reports. It is hoped that, after the training, participants will be able to consistently apply these principles in MDMC's operational activities. This will create a well-organized documentation system, accountable financial management, and an MDMC institution that is increasingly professional, effective, and responsive to community needs in emergency situations. This activity is a strategic step to strengthen MDMC's role as the vanguard in disaster management at the local and national levels.

This study aims to analyze the differences in various extraction techniques and their relationship to the yield and biological activity of phytochemical compounds from natural materials. The research was conducted through a systematic literature review from various reliable scientific sources over the last decade. The results indicate that extraction methods such as maceration, soxhlet extraction, microwave-assisted extraction (MAE), and ultrasound-assisted extraction (UAE) have varying effectiveness. The effectiveness of these methods is highly dependent on the type of material, solvent used, and process parameters such as temperature, time, and solvent-to-material ratio. Modern extraction methods such as sonication, MAE, and UAE tend to produce higher yields and better biological activity. These modern methods have the advantage of being more time-efficient and requiring fewer solvents, thus allowing the extraction of active compounds more optimally. Additionally, technologies like microwave and ultrasonic waves help break down the cell walls of natural materials, enhancing the release of phytochemical compounds more effectively and rapidly. However, conventional methods such as maceration and soxhlet extraction remain relevant, especially for materials containing thermolabile compounds that may degrade at high temperatures. These methods are still preferred to maintain the stability of active compounds sensitive to thermal degradation. Choosing the appropriate extraction method is crucial in producing high-quality extracts that can potentially be used as raw materials for phytopharmaceuticals, supplements, or other natural products. This study provides a strong theoretical foundation for further experimental research and guidance in selecting extraction methods based on the required efficiency and effectiveness for industrial applications. Thus, this study contributes to the development of more efficient and high-quality natural products.

Archives, as information recorded in various media, including cassette tapes, hold significant historical, cultural, and commercial value. These materials are classified as audiovisual archives. Among them, cassette tapes containing national and international songs form part of the collection at the Museum Musik Indonesia, located in Malang, East Java, Indonesia. As a self-managed museum run by a community of music enthusiasts, the Museum Musik Indonesia provides public access to information about its song collections. Given the large number of cassette tapes preserved, an effective information arrangement system is essential. This study recommends the use of a geographical classification system to organize the collection. Archive data is entered into a database using Microsoft Excel, allowing for structured cataloging and easier retrieval. This research employs a qualitative method, involving interviews with several informants from the Museum Musik Indonesia. The findings indicate that applying a geographical classification system in organizing cassette tape archives significantly improves the museum’s management capabilities. This system facilitates the rediscovery of archived items, enhances organization, and supports accurate record-keeping. Furthermore, electronic storage of archive information reduces the risk of data loss and ensures long-term preservation. The implementation of this arrangement not only benefits internal management but also enhances the quality of service provided to museum visitors. By enabling quicker and more accurate access to the collection, the museum can offer a richer and more engaging visitor experience. This study demonstrates that systematic archival practices, even when implemented with accessible tools like Microsoft Excel, can yield substantial benefits in cultural heritage preservation. The approach can serve as a reference for other small-scale or community-based museums seeking efficient, low-cost methods for managing and safeguarding their archival assets.

An auction is an open sales mechanism that provides the public with the opportunity to acquire goods or assets through the highest bid. This process begins with an official announcement and is carried out transparently. In line with the development of information technology and efforts to modernize public services, the Indonesian government issued Minister of Finance Regulation (PMK) Number 122 of 2023 concerning Auction Implementation Guidelines. This regulation aims to update and simplify the auction process with a digital approach to make it more effective, efficient, and reach the wider community. This study aims to analyze the implementation of PMK 122/2023 at the Surakarta State Assets and Auction Service Office (KPKNL) and identify obstacles encountered in its implementation. The research method used is a juridical-empirical with a qualitative approach, where primary data was obtained through interviews with auction officials and related staff at the Surakarta KPKNL, while secondary data was collected from regulations, official documents, and legal literature. The research results show that the implementation of PMK 122/2023 has had a positive impact on improving the quality of auction services through digitalization, such as the implementation of an e-Auction system, the provision of e-Auction Corner facilities, and the use of other information technology to facilitate public access. Based on Soerjono Soekanto's theory of legal implementation, the success of policy implementation is influenced by factors such as legal substance, law enforcement officers, and the legal culture of the community. The Surakarta KPKNL (National Public Service Agency) is considered successful in increasing efficiency, accountability, and service satisfaction to the community. However, obstacles remain in its implementation, such as disputes over ownership of auction objects, resistance to occupants' evictions, and technical and administrative challenges in using online systems. This research recommends the need for inter-agency synergy, strengthening complementary regulations, and public education to support the smooth and sustainable implementation of digital-based auctions.

Electricity has emerged as an essential requirement in modern life. As demand escalates, electricity costs rise, making wastefulness a drain on financial resources. Consequently, forecasting electricity usage can enhance our management of consumption. This study presents an IoT-based monitoring and forecasting system for electricity consumption. The system comprises two NodeMCU micro-controllers, a PZEM-004T sensor for collecting real-time power data, and three relays that regulate the current flow to three distinct electrical appliances. The data gathered is transmitted to a web application utilizing the k-Nearest Neighbor (k-NN) algorithm to forecast future electricity usage based on historical patterns. We evaluated the system's performance using four weeks of electricity consumption data. The results indicated that predictions were most accurate when the user’s daily consumption pattern remained stable, achieving a Mean Absolute Error (MAE) of approximately 1 watt and a Mean Absolute Percentage Error (MAPE) ranging from 1% to 1.7%. Additionally, predictions were notably precise during the early morning hours (3:00 AM to 8:00 AM) when k=6 was employed. This study demonstrates the effectiveness of integrating IoT-based systems with machine learning for real-time energy monitoring and forecasting. Furthermore, it emphasizes the application of data mining techniques within embedded IoT environments, providing valuable insights into the implementation of lightweight machine learning for smart energy systems.

This study was conducted with the motivation to analyze the impact of product innovation, word-of-mouth (WOM), and social media marketing on purchasing decisions at one of the English language courses located in Kampung Inggris, Pare, Kediri, namely Global English. In the digital era and increasingly fierce competition among non-formal educational institutions, understanding the factors that influence purchasing decisions is very important. This study used a quantitative approach with a survey method via Google Form, which was distributed to active students at the institution. The research instrument, a closed questionnaire, was designed to measure students' perceptions of the product innovation offered, the influence of word-of-mouth communication, and the effectiveness of marketing strategies through social media. The analysis results show that product innovation has a significant influence on purchasing decisions, particularly in terms of offering new programs that are in line with market needs, such as the "Studycation" program that combines learning and recreation. Word-of-mouth has also been shown to play an important role in building trust among potential consumers through positive experiences from previous users. In addition, social media marketing makes a real contribution to reaching a wider audience, increasing interaction, and strengthening the institution's image in the public eye. These three variables, both partially and simultaneously, had a positive and significant influence on purchasing decisions. These findings indicate that integrated, digital-based marketing strategies are key to attracting and retaining consumer interest in the informal education sector. This research is expected to serve as a reference for course providers and other educational institutions in designing innovative, efficient, and adaptive marketing strategies to address changing consumer behavior in the digital era.