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Internet of Things (IoT)-based digital transformation has become a major catalyst in improving the efficiency of operational systems in various sectors, including the modern retail industry. One of the common logistics problems found in supermarket environments is the accumulation of unorganized shopping trolleys, which can hinder service flow and increase staff workload. This study presents a design of an IoT-based autonomous smart trolley system and automatic navigation to address these problems in a structured manner. The system design utilizes the integration of ESP32 and Arduino UNO microcontrollers, ultrasonic sensors for distance detection, line sensors for automatic path navigation, and Raspberry Pi modules for visual image processing in location tracking. The system is designed to be able to independently reposition the trolley to a predetermined parking station. Conceptual analysis shows that this system has significant potential in reducing operational costs, increasing labor efficiency, and strengthening customer service automation. Initial evaluation of technical and economic feasibility aspects strengthens the opportunity for widespread system implementation in the future. This design is the first step in developing a smart retail solution based on adaptive technology that is in line with the principles of Society 5.0. Furthermore, the development of this smart trolley system also considers user safety and comfort through additional features such as anti-collision sensors, an early warning system in the event of technical problems, and a manual control option as an alternative in emergency situations. The integration of Internet of Things-based technology also enables real-time monitoring and management systems through a web-based dashboard or mobile application, which can be accessed by supermarket management for operational analysis. Thus, this system not only addresses internal logistics needs but also contributes to improving the overall customer experience.

The rapid advancement of information technology has brought significant transformation across multiple sectors, including library management systems. One of the pressing needs in higher education libraries is the development of an efficient, accurate, and secure borrowing system that reduces human error and improves service quality. This study aims to design and implement a book borrowing system for the STMIK Kaputama library by utilizing Radio Frequency Identification (RFID) technology integrated with the Internet of Things (IoT). The proposed system employs the ESP32 microcontroller as the core controller, supported by the RFID RC522 module and buzzer as primary devices to facilitate the automatic identification of library members and borrowed books. The borrowing and returning process is executed through RFID card scanning, with all transaction data transmitted via WiFi and stored in a MySQL database, which is managed through a PHP-based web platform. The development process follows the Agile methodology, enabling iterative improvement and adaptability to user requirements. System testing demonstrates that the integration of RFID and IoT technology significantly enhances the efficiency, accuracy, and speed of library operations compared to the previous manual system. Furthermore, the system allows real-time recording of borrowing transactions, monitoring of user activities, and centralized data management. These features not only streamline library services but also improve data security and reduce the risk of loss or duplication of records. Overall, the implementation of this RFID-IoT-based system provides an innovative solution for modernizing library management, particularly in higher education institutions. The system ensures faster services, minimizes errors, and creates a structured and reliable digital infrastructure to support academic information services. This study highlights the potential of combining RFID and IoT technologies to improve the quality and effectiveness of library systems in the digital era.

The Printed Circuit Board (PCB) industry increasingly relies on automation and digitalization to improve efficiency and accuracy in production and distribution processes. One common practice is the use of labels containing product information in the form of barcodes or QR codes, which allow automatic data input and reduce the risk of human error compared to manual writing. However, in current practices, these labels are only attached to PCBs after they have been placed inside casings. This creates a significant limitation, as access to the label information requires disassembling the casing whenever product verification, tracking, or troubleshooting is needed. Such a process not only consumes additional time and resources but also increases the risk of damaging the product. To overcome this challenge, this study proposes the development of a traceability system designed to accurately monitor the location, identity, and status of PCBs throughout the distribution process. The system was implemented as a web-based application capable of generating and printing product information labels in the form of barcodes and QR codes. Each label functions as a unique identifier, ensuring that every PCB can be distinctly tracked from production to final product assembly. All data associated with the labels is automatically stored in a centralized database, providing real-time accessibility, simplifying information management, and enabling faster decision-making in the event of quality control issues. System evaluation was carried out through rigorous testing, which showed a 100% success rate in generating, storing, and retrieving product information without errors. The findings indicate that the proposed traceability system is both effective and efficient, and it offers a practical solution for industries seeking to enhance supply chain visibility, improve product accountability, and reduce operational inefficiencies in PCB distribution and lifecycle management.

Village websites currently generally only provide information in the form of an interface for users, such as village profiles, potential areas, population data, and current news. However, the majority are not yet equipped with Application Programming Interface (API) support that allows for flexible and automated data integration and exchange. This is a challenge when dynamic access is needed by third-party systems, such as public service platforms, mobile applications, or local government information systems, which require real-time and accurate synchronization of population data. The project aims to implement a RESTful API that can be accessed securely, efficiently, and easily understood by developers to retrieve villagers' data. The development of the system is carried out using the Agile method, which supports rapid iteration and periodic evaluation to ensure that each feature functions optimally according to the needs of users and field conditions. This Agile method is applied in several sprints that include the stages of needs planning, designing the API endpoint structure, coding, documentation, and testing of the integration and security of the system as a whole. The results of the implementation show that the API successfully retrieves data directly from the village database, and presents it in a JSON format that is compatible for use by both frontend and third-party systems. This API supports pagination features for efficient access to large amounts of data, and is equipped with Basic Authentication to keep data access secure from being abused. With this API, the village website not only becomes a static information medium, but also transforms into a digital service platform that is open for cross-system integration. This supports the development of a more modern, efficient, sustainable, and collaborative village information system in the future, so that public services can be significantly improved.

This study aims to design and develop a website-based library information system using the Agile method at SMK Azzahro Palembang. The Agile approach was chosen because it allows for an iterative, flexible, and collaborative software development process between the development team and end users. This process prioritizes speed in completing each development stage and allows for continuous improvement based on user feedback. The developed information system includes several key features, such as book data management, library member data, loan and return transactions, and online book catalog searches. Through this system, library management activities become more structured, efficient, and well-documented. In addition, users—both students and teachers—can easily access book availability information without having to come directly to the library, thus improving time efficiency. The trial results show that this system significantly improves the work efficiency of library staff and user convenience in accessing information. This study also notes the important contribution of the Kampus Mengajar program, which supports the transfer of information technology knowledge to schools and encourages increased digital literacy among students and education personnel. With this information system, it is hoped that library management at SMK Azzahro will be more modern, transparent, and support the school's literacy culture in a sustainable manner. In addition to the practical benefits, the development of this library information system will also have a positive impact on improving digital competency for all elements of the school. Teachers and administrative staff who were previously unfamiliar with intensive digital system use will receive training and mentoring throughout the implementation process. This will result in improved information technology skills that can be applied not only to library management.

Penyakit jantung merupakan salah satu penyakit dengan angka kematian tertinggi di negara maju bahkan dunia. Penyakit jantung dapat mengancam jiwa jika tidak ditangani dengan serius. Jumlah penderita penyakit jantung meningkat setiap tahunnya. Penyakit jantung dapat disebabkan oleh beberapa faktor, yang utama adalah konsumsi alkohol berlebihan, kebiasaan merokok, dan faktor keturunan. Penelitian ini bertujuan untuk memprediksi dan mencegah penyakit jantung sejak dini menggunakan algoritma pembelajaran mesin, yaitu regresi logistik. Data yang digunakan untuk pelatihan dan pengujian algoritma regresi logistik sebanyak 1.190 data, yang terbagi menjadi 80% data pelatihan dan 20% data pengujian. Hasil pengujian menunjukkan bahwa model dapat memprediksi dengan akurasi sebesar 86%. Setelah model dibuat, model tersebut diimplementasikan ke dalam situs web. Penelitian ini diharapkan dapat berkontribusi pada diagnostik yang dapat membantu deteksi dini penyakit jantung.

This community service activity was motivated by the need for an efficient and structured library management system at MI Hidayatul Ulum. Previously, book recording, borrowing, and reporting were done manually, creating administrative challenges and limiting access to information for students and teachers. To address these challenges, the community service team implemented a web-based library information system designed to simplify collection management, facilitate book searches, and expedite the borrowing and return process. The implementation method included partner needs analysis, system design and installation, training for staff and teachers, and evaluation of implementation results. The system was designed to be accessible through the school's local network with a simple and user-friendly interface. Training was provided to ensure the school was able to utilize and manage the system independently. The results showed that the implementation of this information system improved library management efficiency and expanded user access to information. Teachers could more easily monitor book collections, while students found it easier to search for and borrow books. Furthermore, the system accelerated administrative processes and reduced the risk of recording errors. Another positive impact was the growth of a technology-based literacy culture within the madrasah. With the availability of faster book search and borrowing services, students' interest in reading increased. A participatory approach involving schools from the planning stage through evaluation ensures that the resulting solutions meet needs and can be implemented sustainably. This community service activity is expected to serve as a model for implementing simple technology that has a real impact on improving the quality of basic education services.

Produksi perhiasan emas PT Gemopia Indonesia melibatkan proses bombing, yang membutuhkan keakuratan tinggi untuk memastikan kualitas produk.  Beberapa kelemahan sistem pencatatan yang masih dilakukan secara manual menggunakan Microsoft Excel termasuk keterlambatan laporan, kurangnya keamanan data, dan kesalahan input yang tinggi. Tujuan penelitian ini adalah untuk mengembangkan dan membangun sistem informasi bombing emas berbasis web yang akan mempercepat proses pencatatan, meningkatkan akurasi data, dan memperbaiki alur pelaporan.  Pengembangan sistem ini menggunakan metode Waterfall, yang mencakup tahapan analisis kebutuhan, perancangan sistem menggunakan UML, pengembangan dengan framework Laravel dan database MySQL, dan pengujian dengan metode black box. Hasil pengujian menunjukkan bahwa seluruh fungsi sistem berjalan dengan baik dan sesuai dengan kebutuhan pengguna, dengan fitur seperti perhitungan otomatis, hak akses pengguna bertingkat, verifikasi dan koreksi data produksi, dan pembuatan laporan dalam format PDF. Sistem mampu menerima input, memproses data , dan menghasilkan output yang tepat dan sesuai dengan spesifikasi.Oleh karena itu, sistem ini dinyatakan layak untuk diimplementasikan secara penuh dalam rangka mendukung efisiensi dan transparansi pelaporan produksi di PT Gemopia Indonesia.

This study focuses on the development of an interactive web-based learning platform for Proportional-Integral-Derivative (PID) control systems, aimed at addressing the conceptual challenges faced by electrical engineering students when learning PID through conventional teaching methods. Despite its foundational role in control theory, PID remains difficult to grasp without practical visualization and hands-on experimentation. To bridge this gap, the research introduces a practical and accessible platform that enhances conceptual understanding through real-time simulations and physical interaction. The proposed system integrates key hardware components including an ESP-32 microcontroller, DC motor, rotary encoder, BTS 7960 motor driver, and I2C LCD. The platform’s web interface is built using HTML, Tailwind CSS, and JavaScript, enabling intuitive user interaction. Motor response data is captured via the ESP-32 and transmitted to the web interface using the WebSocket protocol, allowing users to instantly visualize system behavior as PID parameters (Kp, Ki, Kd) are adjusted. This dynamic feedback mechanism enables students to observe changes in system characteristics such as rise time, overshoot, and settling time in real time. To evaluate the platform’s feasibility, practicality, and educational effectiveness, beta testing was conducted among electrical engineering students using Likert-scale questionnaires. The results demonstrated that users were able to successfully interpret the impact of PID tuning on system performance. The average evaluation score reached 75.13%, indicating strong agreement regarding the platform’s educational value and its effectiveness in enhancing learning outcomes. In conclusion, the study affirms that the developed web-based platform offers a feasible, engaging, and pedagogically effective alternative to traditional learning approaches. By combining interactive simulations with physical experimentation, the platform significantly improves students’ understanding of PID control systems.

In recent years, rapid advancements in digital technology have significantly transformed global healthcare delivery. The COVID-19 pandemic acted as a catalyst, accelerating the integration of information technology into healthcare systems, particularly through the increased adoption of telemedicine. In the field of internal medicine, which often involves long-term care and management of chronic illnesses, telemedicine presents a promising solution to enhance service accessibility, improve care efficiency, and sustain favorable clinical outcomes. This study aims to conduct a narrative review to explore the impact of telemedicine on patient clinical outcomes, healthcare worker workload, and healthcare system efficiency within internal medicine practice. The review is based on an analysis of peer-reviewed literature published between 2020 and 2025, sourced from major databases including PubMed, Scopus, and Web of Science. Article selection was based on relevance to the topics of telemedicine and internal medicine, contextual applicability, and full-text availability. The findings of the review reveal that telemedicine contributes positively by expanding access to care, reducing travel time and logistical barriers for patients, accelerating clinical response times, and decreasing patient congestion in healthcare facilities. These outcomes are particularly beneficial for patients with chronic conditions who require regular monitoring and consistent communication with healthcare providers. However, the implementation of telemedicine also introduces new challenges, including increased administrative responsibilities and digital workload for healthcare professionals. The study underscores the importance of equipping healthcare systems with adequate digital infrastructure, implementing supportive and flexible policies, and providing comprehensive training for healthcare workers. These measures are crucial to ensure the successful and sustainable adoption of telemedicine in internal medicine. Overall, telemedicine holds strong potential to reshape the future of internal medicine, provided that its integration is strategically managed to balance technological advancement with human-centered care.

This Community Service Program (PKM) aims to enhance the understanding of the staff at the Environmental and Sanitation Agency (DLHK) of Depok City in utilizing information technology through socialization and training on the development of a waste classification website. The website is designed to assist the public in identifying types of waste and to encourage more responsible and integrated waste management practices. The implementation methods for this program include socialization sessions, technical training workshops, and system usage demonstrations. Participants were introduced to the functionalities of the website, including how to classify various waste types and its role in supporting environmental sustainability. The program also provided hands-on training to ensure the staff could effectively use the website and incorporate it into their daily tasks. As a result, the staff’s understanding of the concept of digital-based waste classification has significantly increased. Additionally, the potential benefits of using such technology to support sustainable environmental management programs were clearly recognized. The program not only enhanced the staff's technical skills but also contributed to a deeper understanding of the importance of waste classification in the broader context of environmental conservation. The outcomes of this initiative are expected to encourage the staff to actively promote the use of the website to the public, thus fostering a more responsible and efficient waste management system in Depok City. This program demonstrates the effectiveness of integrating technology in supporting local government initiatives aimed at improving environmental management and sustainability. Furthermore, it underscores the importance of digital tools in modernizing waste management systems and enhancing public awareness and engagement.

This study aims to develop a data security system for the Pancadaya Waste Bank web-based application by implementing a hybrid cryptography algorithm combining AES and RSA. The main problem identified is the vulnerability of manually recorded and unsecured transaction data. The research applied a qualitative approach through interviews with system users and the Environmental Agency, as well as literature reviews on hybrid cryptography algorithms. The system was developed using the Rapid Application Development (RAD) method and implemented using PHP, MySQL, and the OpenSSL library. The results show that the system successfully encrypts transaction data using AES and secures the AES key with RSA, thereby enhancing data security. Testing with GTmetrix indicates excellent application performance. Furthermore, the system can display and decrypt real-time transaction data in receipt form for both deposit and withdrawal processes. This application provides an innovative solution to data management and transaction security issues in digital-based waste bank systems.

This study focuses on the development and implementation of “Pasar Kita,” a web-based marketplace system designed to facilitate digital transactions for traditional market sellers and consumers. The system was developed using PHP as the backend programming language and MySQL as the database management system. The purpose of this project is to address the digital gap experienced by traditional market vendors who have limited access to modern e-commerce platforms. The research includes a needs analysis, system design using UML diagrams, implementation of main features such as registration, login, product management, transactions, checkout, and order tracking, followed by system testing. The results show that all major functions operate properly, including user authentication, product uploads, order processing, and payment simulations via transfer or cash-on-delivery (COD). System testing indicates that the platform meets usability, functional, and responsiveness criteria. The findings highlight the system’s capability to support local economic digitalization by providing an accessible and user-friendly marketplace for traditional market vendors and consumers.

In promoting a cultural arts performance, the success of an event is determined not only by the quality of the performance itself but also by the effectiveness of the marketing communication strategy implemented. In today’s digital era, organizers of cultural art performances face increasingly complex challenges, including shifts in audience media consumption behavior, rapid developments in communication technology, and the need to build sustained digital engagement between organizers and stakeholders.This study adopts the Integrated Marketing Communication (IMC) theory to examine the marketing communication strategies implemented by the Department of Culture and Tourism of Surakarta City in promoting the Solo International Performing Arts (SIPA) event in 2024. The research methodology includes in-depth interviews with organizers and document analysis of promotional materials and publication activities.The findings indicate that the department applied eight elements of integrated marketing communication: advertising, sales promotion, events and experiences, public relations and publicity, direct marketing, interactive marketing, mobile marketing, and personal selling. Each element was carried out synergistically to build awareness, attract public interest, and shape a positive image of the SIPA event in society.The implemented strategy has successfully reached a broader audience through digital channels such as social media and official websites, as well as through direct approaches like local media publications and collaboration with art communities. However, challenges remain in delivering more innovative and creative promotional content to enhance the event’s appeal. These findings offer important implications for cultural event managers, emphasizing the need for structured, consistent, and audience-relevant promotional strategies in the digital era. A well-integrated marketing communication approach not only strengthens public engagement but also reinforces the identity and sustainability of cultural events like SIPA on both local and international levels.

The Catholic Spiritual Revival (KRK) was a large-scale spiritual event organized by the Catholic Charismatic Renewal Body of the Diocese of Malang, aimed at revitalizing the faith and service spirit among Catholics in the post-COVID-19 period. Held on November 2, 2024, at the New Hongkong Ballroom Araya Malang, the event brought together participants from 18 different prayer communities, with a target audience of 1,200 people. To support the success of this initiative, the Publication Division—comprised of a community service team from the Faculty of Economics and Business at Ma Chung University—was tasked with planning and implementing an effective promotional strategy. The team focused on a cost-efficient and high-impact digital publicity approach, which included creating digital content for social media platforms, hosting webinars, and developing a targeted online promotion campaign. The implementation of this digital strategy proved to be highly successful. Ticket sales surpassed expectations, with over 900 tickets sold two weeks before the event and actual attendance exceeding 1,200 people. These outcomes demonstrated the strong appeal and reach of the event’s publicity efforts. In addition to increasing awareness, the visual and content strategies helped build community engagement and enthusiasm ahead of the event. This report presents a comprehensive review of the planning and execution phases of the publication strategy, highlighting key challenges, creative processes, and collaborative efforts. It also offers practical recommendations for future events of similar scale, especially in leveraging digital media to enhance participation and outreach. The success of KRK 2024 underscores the value of strategic communication and visual branding in religious and community-based events.

Children born with physical or mental limitations certainly make parents sad and sometimes not ready to accept them for various reasons. The presence of children with special needs has the potential to be a source of stress or stressors, which is influenced by parental acceptance. This method is designed to achieve the stated goals by combining theoretical insights with practical applications. This webinar has a significant impact on webinar participants, especially parents who have children with special needs with the aim of equipping parents with knowledge and understanding so that they are expected to accept the presence of their children who have mental or physical limitations. The stages of parental acceptance of children with special needs in this study include (1) the rejection phase, starting from a feeling of disbelief that the doctor has given a verdict that the child is a child with special needs; (2) the anger phase, usually occurs when parents realize that the child's condition is undeniable; (3) the bargaining phase, where parents try to bargain for the condition that occurs in the child; (4) the depression phase, experiencing problems in daily life due to pressure after pressure that cannot be denied; (5) the acceptance phase, where parents wholeheartedly accept that they have a child with special needs.

The Catholic Spiritual Revival (KRK) was a large-scale spiritual event organized by the Catholic Charismatic Renewal Body of the Diocese of Malang, aimed at revitalizing the faith and service spirit among Catholics in the post-COVID-19 period. Held on November 2, 2024, at the New Hongkong Ballroom Araya Malang, the event brought together participants from 18 different prayer communities, with a target audience of 1,200 people. To support the success of this initiative, the Publication Division—comprised of a community service team from the Faculty of Economics and Business at Ma Chung University—was tasked with planning and implementing an effective promotional strategy. The team focused on a cost-efficient and high-impact digital publicity approach, which included creating digital content for social media platforms, hosting webinars, and developing a targeted online promotion campaign. The implementation of this digital strategy proved to be highly successful. Ticket sales surpassed expectations, with over 900 tickets sold two weeks before the event and actual attendance exceeding 1,200 people. These outcomes demonstrated the strong appeal and reach of the event’s publicity efforts. In addition to increasing awareness, the visual and content strategies helped build community engagement and enthusiasm ahead of the event. This report presents a comprehensive review of the planning and execution phases of the publication strategy, highlighting key challenges, creative processes, and collaborative efforts. It also offers practical recommendations for future events of similar scale, especially in leveraging digital media to enhance participation and outreach. The success of KRK 2024 underscores the value of strategic communication and visual branding in religious and community-based events.

Infeksi Saluran Pernapasan Akut (ISPA) merupakan masalah kesehatan utama di Kabupaten Tegal, terutama menyerang anak-anak dan lansia, dengan 25.273 kasus tercatat pada Januari–Juni 2025. Faktor seperti kepadatan penduduk, polusi udara, dan sanitasi buruk mempersulit analisis konvensional dalam mengidentifikasi wilayah berisiko tinggi. Penelitian ini bertujuan mengembangkan Sistem Informasi Geografis (SIG) berbasis web untuk memetakan dan memantau kasus ISPA secara akurat menggunakan pendekatan spasial. Metode Waterfall digunakan dalam pengembangan sistem, meliputi analisis kebutuhan, perancangan, implementasi, pengujian, dan pemeliharaan. Data spasial (koordinat lokasi) dan non-spasial (usia, jenis kelamin, jumlah kasus) dikumpulkan dari Dinas Kesehatan dan dianalisis menggunakan teknik kepadatan titik dan klaster untuk mengidentifikasi pola sebaran. Sistem ini dibangun dengan framework Laravel sebagai backend dan Leaflet.js untuk visualisasi peta interaktif. Hasilnya, SIG ini mampu memvisualisasikan sebaran kasus ISPA per kecamatan, mendukung Dinas Kesehatan dalam mengalokasikan sumber daya medis secara efisien dan mengidentifikasi wilayah prioritas seperti Dukuhwaru dan Tarub. Bagi masyarakat, sistem ini meningkatkan akses informasi digital, mendorong kesadaran pencegahan, dan mendukung edukasi kesehatan. Sistem ini terbukti efektif sebagai alat strategis untuk pengambilan keputusan berbasis data, mempercepat respons terhadap ISPA, dan menjadi fondasi untuk pengembangan SIG dalam memantau penyakit lain di masa depan.

Digital transformation in government bureaucracy has become a strategic step to improve efficiency, accountability, and transparency, including in the management of regional legal products. In the Regional Secretariat of Tegal Regency, the process of submitting legal products is still done manually, which causes inefficiencies, delays, and a lack of document traceability. To address these issues, a web-based legal product submission application has been developed with document tracking features. This research uses the Waterfall system development method, and implements a FIFO (First In First Out) queuing system in the submission process, along with Role-Based Access Control (RBAC) for managing user access rights. The goal of this system is to create a faster, more transparent, and digitally documented application process. The implementation results show that the application is able to systematically and integratively manage the flow of submissions, corrections, verification, and the ratification of legal products. Features such as a Login page with CAPTCHA, analysis dashboards, tracking, and monthly reports enhance the monitoring and security functions of the system. This application can be an effective solution in supporting the digitization of regional legal bureaucracy, as well as providing ease and efficiency for regional officials in preparing and submitting drafts of legal products digitally.

Profitability is one of the key indicators in assessing a company's ability to generate profits and plays a crucial role in financial decision-making. According to the pecking order theory, companies with high profitability tend to prefer using internal funds and reduce reliance on debt. This study aims to analyze the effect of profitability on debt policy, as well as to examine the role of dividend policy as a moderating variable in this relationship. The study employed Slovin’s formula for sample selection and analyzed 263 non-financial publicly listed companies on the Indonesia Stock Exchange (IDX) in 2023. The data used in this research were secondary data obtained from annual financial reports published on the official website of the IDX or the respective company websites. Profitability was measured using return on assets (ROA), debt policy was measured by the debt-to-equity ratio (DER), and dividend policy was measured by the dividend payout ratio (DPR). The analytical method used in this study was multiple linear regression analysis with the help of the SPSS software. The results indicate that profitability has a negative effect on debt policy, meaning that the more profitable a company is, the less likely it is to depend on debt financing. Additionally, the findings suggest that dividend policy does not significantly moderate the relationship between profitability and debt policy. This implies that whether a company distributes dividends or not does not meaningfully influence how profitability affects its debt decisions. These results are in line with the pecking order theory and provide insight for corporate financial managers in planning funding structures. It also emphasizes the importance of internally generated funds for companies with strong earnings performance.