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Gastric disease is a common health problem that can disrupt daily activities if not properly treated. To aid the initial diagnosis process, this study developed a web-based expert system capable of diagnosing various types of gastric disease based on the symptoms experienced by the user. This system uses the Dempster-Shafer method to address uncertainty in decision-making by combining a number of pieces of evidence in the form of symptoms to determine the level of confidence in a disease. The system was developed using the PHP programming language and a MySQL database and designed for easy browser access. Testing demonstrated that the system was able to provide fairly accurate diagnostic results that closely approximated the results of consultations with medical professionals. This system is expected to become an initial solution for the public in quickly and independently recognizing symptoms of gastric disease.  

The attendance recording system at PLN ULP Tanjungbalai still relies on manual, paper-based methods, resulting in delays in data recap, reduced efficiency, and a high potential for recording errors. This condition affects the accuracy of employee attendance information, which is essential for administrative activities and managerial decision-making. Based on these issues, this practical work aims to design and develop a web-based e-attendance application as a solution to enhance efficiency, processing speed, and the accuracy of attendance recapitulation. The system was developed using PHP as the programming language and MySQL as the database management system, following several stages including requirement analysis, system design using UML, and implementation of a web-based user interface. The application provides essential features such as user login, daily attendance recording, employee data management, attendance notes (permission, sickness, etc.), and automatic attendance report generation. The system is designed for two types of users—Admin and Employees—each with specific access rights. The implementation results indicate that the e-attendance application significantly improves the efficiency of attendance administration at PLN ULP Tanjungbalai. Data collection and recapitulation become faster, more structured, and less prone to errors, while also enabling administrators to monitor employee attendance in real time. Therefore, this web-based e-attendance application serves as an effective solution to support operational activities and enhance the quality of employee attendance management.

The rapid development of information technology encourages companies to optimize administrative sistems, including employee payroll processes, to ensure greater operational effectiveness and data accuracy. PT Infokom Internusa still utilizes manual and semi-computerized methods in payroll management, which may lead to calculation errors, data duplication, data inconsistency, and delays in report generation. These issues can affect overall organizational performance and decision-making efficiency. This study aims to design and develop a Java-based Employee Payroll Information Sistem to improve efficiency, accuracy, transparency, and security in payroll processing. The research employs the Waterfall software development model, which consists of requirement analysis, sistem design using Unified Modeling Language (UML), implementation using the Java programming language and MySQL database, and comprehensive sistem testing. The results indicate that the developed sistem is capable of automating salary calculations, allowances, deductions, tax computations, and report generation in an integrated and structured manner. The sistem also reduces manual errors, minimizes redundancy, and accelerates payroll administration processes. Therefore, the proposed information sistem can significantly enhance the performance, productivity, and service quality of the HR and finance departments at PT Infokom Internusa.

Digital portfolios are a crucial tool for professionally showcasing abilities and learning objectives. Nevertheless, the projects and certificates of participants in the Independent Study program at VINIX7 are still kept apart and are not controlled by an integrated system. This requirement is the basis for the research's design and development of a website-based digital portfolio system that will serve as participants' key platform. Requirements analysis, system design, implementation, and testing are all steps in the Waterfall approach of system development. The Laravel framework was used to create the VinixPort website, which is backed by a MySQL database. The system has tools for managing portfolio material, talent evaluation, user registration and login, and data presentation via analytics. The study's findings show that the VinixPort website was created successfully and that all of the system's primary features work as intended. This service helps users create organized digital portfolios that are readily available and prepared for both professional and academic use.

The management of scientific works at the Faculty of Law, Universitas Jambi, is still carried out manually through physical archives and simple digital storage without an integrated information system. This condition causes limited access, slow information retrieval, and a high risk of document loss and damage. This study aims to develop a web-based scientific repository system to improve the efficiency, accessibility, and security of managing academic works. The system was developed using the Waterfall method, which consists of requirement analysis, system design, implementation, testing, and evaluation. Data collection was conducted through interviews, observations, and questionnaires involving librarians, lecturers, and students. The system was implemented using the Laravel framework with a MySQL relational database to support document storage, metadata management, access control, and search functionality. The results show that the developed repository system is able to facilitate the submission, verification, publication, and retrieval of scientific works effectively. User acceptance testing indicates that the system meets user needs in terms of usability, functionality, and accessibility. The implementation of this system contributes to improving academic information management and supports digital transformation at the Faculty of Law, Universitas Jambi.

Toko Jahit SA’aminah is a business engaged in tailoring services and the sale of sewing supplies that still manages data manually using record books. This condition causes several problems, such as slow data recording, the risk of data loss or damage, difficulties in monitoring the status of tailoring work and inventory, as well as obstacles in preparing tailoring service and sales reports. This study aims to design and develop a web-based tailoring service and sales information system to optimize the effectiveness and efficiency of operational performance. The system development method used is the waterfall method, which includes the stages of requirements analysis, system design using UML (Use Case Diagram, Activity Diagram, and Class Diagram), implementation using the Laravel framework with the PHP programming language and MySQL database, as well as system testing using the Black Box Testing method. The results show that the developed system is able to facilitate the management of tailoring service and sales data, monitor the status of tailoring work, check the availability of sewing supplies, and accelerate the preparation of tailoring service and sales reports to be submitted to the owner of Toko Jahit SA’aminah.

The rapid development of information technology has encouraged organizations to implement computerized systems to improve document management efficiency and security. At PT Petrokimia Gresik, import document archiving was previously conducted using Google Drive and physical storage, which caused issues such as limited access control, risk of data loss, and slow document retrieval during audits. This study aims to design and develop a web-based Import Document Archiving Information System using the waterfall development method. The system was built using HTML, CSS, JavaScript, PHP, and MySQL. The results indicate that the system improves archiving efficiency, enhances data security, accelerates document search, and supports structured monitoring and validation processes.  

Penelitian ini mengembangkan sistem pemantauan berbasis Internet of Things (IoT) untuk mengoptimalkan kinerja Mini PC dan pemeliharaan real-time di CV Permata Gemilang Jaya. Metodologi waterfall diterapkan menggunakanNodeMCU sebagai mikrokontroler utama, dilengkapi dengan sensor DHT22, DS18B20, dan INA219 untuk memantau parameter suhu, CPU, dan memori. Arsitektur sistem mengintegrasikan kerangka kerja Laravel dengan database MySQL, menghasilkan aplikasi web responsif dengan kontrol akses berbasisperan untuk Admin Pusat, Admin Regional, dan Teknisi Cabang. Infrastrukturserver cloud dengan konektivitas GSM cadangan memfasilitasi pemantauanterpusat di wilayah Ciayumajakuning. Desain sistem menggunakan Unified Modeling Language (UML) dengan diagram kasus penggunaan dan diagram aktivitas yang komprehensif. Penerapan sistem pemberitahuan otomatisdengan mekanisme peringatan berbasis ambang batas memungkinkan deteksidini anomali perangkat. Antarmuka yang dioptimalkan untuk selulermeningkatkan aksesibilitas teknisi untuk operasi lapangan. Validasi sistemmenunjukkan strategi pemeliharaan preventif yang sukses dalam mengurangiwaktu henti perangkat dan mengoptimalkan efisiensi operasional infrastrukturteknologi informasi.

Rapid advances in Information Technology (IT) in the 21st century have significantly transformed educational practices, particularly in vocational high schools (SMK) specializing in Software Engineering (RPL). Traditional learning media, such as textbooks, static slides, and lectures, often fail to provide an interactive learning experience, limiting students’ engagement and reducing the effectiveness of knowledge retention. To overcome this challenge, this study focuses on developing and validating an interactive quiz application called VOCANETIC, designed as an innovative learning aid for SMK RPL students. The research uses a Research and Development (R&D) approach, emphasizing the stages of product development, expert validation, and feasibility assessment. VOCANETIC is developed using VB.NET in the Microsoft Visual Studio environment, and MySQL is employed for efficient data management and storage. The application features interactive quizzes, real-time feedback, and user-friendly interfaces to enhance student engagement and motivation. Based on evaluation and analysis by expert validators, VOCANETIC meets the “Proper” feasibility criteria, demonstrating usability, interactivity, and educational effectiveness. The results indicate that VOCANETIC is capable of supporting active learning, improving students’ understanding of software engineering concepts, and providing an effective platform for self-assessment and practice. In conclusion, the VOCANETIC application is proven to be a valid, reliable, and practical tool that can be implemented as an interactive learning medium in SMK RPL, offering an innovative approach to facilitate student learning and engagement in the digital era.                                                              

This research aims to design and build a letter archive information system at the KOFIPINDO Law Office to improve the effectiveness and efficiency of document management. The manual filing system that has been used so far poses various obstacles, such as search delays, the risk of losing documents, and low storage accuracy. To overcome these problems, this study applies the Waterfall System Development Life Cycle (SDLC) model in the process of designing and building the system. Web-based technologies used include PHP, HTML, CSS, Bootstrap, and MySQL. The results of the study show that the developed letter archive information system is able to simplify the process of storing, searching, and managing incoming and outgoing letters in a faster, structured, and safer manner. The implementation of this system not only improves administrative performance, but also strengthens accountability and supports the need for professional legal documentation within the KOFIPINDO Law Office. Thus, this web-based mail archive information system can be a strategic solution in modernizing legal document management.

As one of the graduation criteria at Nahdlatul Ulama University Lampung, student activity point management requires a reliable system. Currently, the manual mechanism implemented still encounters obstacles in the form of data inaccuracy and a lengthy verification process. This research aims to build a website-based Student Activity Point Information System to improve the quality of data management. Software development was carried out using the Waterfall model, starting from the analysis stage, design using UML, technical implementation (HTML, CSS, PHP, MySQL), to the functional testing stage. Through this system, students can submit activities online, while the administrator can validate and print point reports automatically. Based on the results of the Black Box test, all features in the system operate as designed. The presence of this system provides a more accurate and efficient solution, making it a credible support tool for the student affairs department. This system is expected to provide a more efficient and accurate solution in student activity point management, as well as support smooth administration and improve the quality of student affairs department services.

The student admission process in many educational institutions is still conducted manually, leading to issues such as data duplication, input errors, and delays in reporting. This study designs and implements a desktop-based student registration information system using VB.NET and MySQL, equipped with an admission-status checking feature and an automated quota-management module. The system was developed using the waterfall model, consisting of requirement analysis, system design using UML, implementation, and black-box testing. Two user roles are supported: admin and student. Admin users can manage applicant data, configure program quotas, open or close the registration period, and generate reports, while student users can create accounts, complete registration forms, and independently check their admission results. The implementation results show that all core functions operate validly based on testing involving two respondents. The quota-management feature successfully restricts the number of applicants according to predetermined capacities, and the admission-status module automatically displays pass or fail results. The system improves administrative efficiency, enhances data accuracy, and reduces reliance on manual record-keeping. Therefore, this desktop application serves as an effective solution for schools requiring a reliable and efficient admission management system without depending on stable internet connectivity.

This study describes the development of a web-based Archival Information System aimed at improving the efficiency and accuracy of managing incoming and outgoing correspondence at the Teluk Nibung Sub-District Office in Tanjungbalai City. The system enhances administrative workflows by digitizing key processes, including the receipt, verification, recording, and archiving of incoming letters, as well as the preparation and distribution of outgoing letters. Management of incoming and outgoing documents is handled separately to ensure systematic processing and to reduce errors commonly found in manual administration. Developed using web-based technologies and supported by a MySQL database, the system enables flexible access, automated data storage, and faster document retrieval. The implementation results indicate notable improvements in administrative performance, such as quicker processing times, reduced reliance on paper-based archives, and improved data security. Overall, the system supports the modernization of public sector administration and contributes to more effective, reliable, and sustainable archival management practices at the sub-district office level.

The employee leave application information system is a digital solution designed to simplify the process of submitting, approving, and managing leave within an institution. This internship project resulted in the development of a system called SiCuti, which was built using the Laravel framework with a MySQL database. The system provides two main roles: employees and administrators/supervisors. Employees can apply for leave according to their entitlements, such as annual leave with a maximum of 12 working days, maternity leave for 3 months, pilgrimage leave (Hajj) which can be taken once during their service period, as well as special leave for important reasons such as marriage or the death of an immediate family member, typically lasting 1–3 days. When applying, employees may also upload supporting documents and monitor the status of their applications through the leave status menu.Administrators or supervisors have broader authority, including reviewing the list of leave requests, approving or rejecting applications, and managing employee leave quotas to ensure compliance with regulations. In addition, administrators can track the complete leave history of employees through an integrated dashboard. This feature supports faster, more transparent, and accountable decision-making processes.The results of local testing indicate that SiCuti has the potential to increase efficiency in administrative leave processes that were previously carried out manually, making them faster, more transparent, and more structured. The interactive dashboard design also facilitates monitoring from both employees and administrators. With the implementation of SiCuti, it is expected that the leave management process can reduce the risk of human error, ensure data accuracy, and support transparency and accountability in human resource management once the system is fully deployed within the institution.

The Wali Nagari Office of Simalidu continues to face challenges in disseminating information due to the lack of an official digital platform. Information is currently delivered manually via bulletin boards, limiting public access and reducing efficiency. This study aims to design and develop a website-based information system for the Wali Nagari Office of Simalidu to improve communication effectiveness between the local government and the community. The research applies the Waterfall method, starting from requirements analysis, system design, implementation, and system testing. The system was developed using the PHP programming language and MySQL database. The main features include a homepage, a village profile, news/information, activities, employee data, a message page, and a contact page. System testing was conducted using the Blackbox Testing method to ensure that all functions operate as expected. The results show that the website-based information system enables village officials to deliver information quickly, accurately, and effectively to the public. It also allows the community to easily access up-to-date information regarding activities, profiles, and services at the Wali Nagari Office of Simalidu. Thus, this system improves transparency, accountability, and the quality of public services.

Sistem informasi keuangan berperan penting dalam mengelola keuangan gereja, sehingga bisa memantau aliran uang, struktur modal, serta hasil secara rutin. Gereja St. Simon Petrus Anaranda di Kecamatan Wewaria, Kabupaten Ende, sampai saat ini masih mencatat keuangan dengan cara manual.  Cara ini memiliki banyak kelemahan, antara lain risiko tinta memudar, potensi kesalahan pencatatan akibat banyaknya transaksi, data yang tidak terintegrasi, serta hasil perhitungan yang kurang akurat. Selain itu, metode manual memerlukan pencatatan dan pemeriksaan berulang sehingga berisiko kehilangan data dan menyulitkan pertanggungjawaban di masa depan. Penelitian ini bertujuan merancang dan mengembangkan Sistem Informasi Keuangan Gereja Katolik St. Simon Petrus Anaranda berbasis web sebagai solusi penyimpanan data keuangan yang lebih terstruktur, aman, dan terintegrasi. Sistem ini dibuat untuk mempercepat pelaporan keuangan, meningkatkan ketepatan pencatatan, serta mendukung keterbukaan dan kemudahan dalam pemantauan oleh pengurus gereja. Metode yang digunakan dalam penelitian ini adalah pendekatan kualitatif dengan penelitian lapangan untuk mendapatkan data yang sebenarnya sebagai landasan pengembangan sistem. Dalam pengembangan perangkat lunak, metode yang digunakan adalah waterfall dengan tahapan analisis, desain, pelaksanaan, dan implementasi. Sistem dibangun dengan menggunakan bahasa pemrograman PHP dan Database MySQL. Hasil pelaksanaan menunjukkan bahwa sistem mampu membantu pengelolaan keuangan gereja secara digital, terorganisir, dan profesional. Proses pencatatan dan pelaporan lebih efisien, transparan, minim kesalahan, serta mampu menghasilkan laporan yang siap dicetak dan dapat dipertanggungjawabkan kepada umat dan keuskupan.

Sistem informasi akademik adalah suatu sistem yang memberikan layanan informasi berupa data dengan pemanfaatan teknologi komputer. Sekolah yang bermutu memerlukan kemampuan dalam mengikuti perkembangan teknologi dan kemampuan mengakses serta menyajikan informasi sehingga dapat dipertanggung jawabkan dalam rangka meningkatkan kualitas pendidikan. SMPN 1 Wolowaru adalah salah satu instansi pendidikan yang beralamat di Jl. Melati Wolowaru. Permasalahan yang ditemukan ialah pengelolaan data guru, data mapel, data kelas, jadwal pelajaran, data siswa, absensi dan nilai siswa masih menggunakan sistem manual dan Microsoft Excel sehingga pengelolaan data-data tersebut bisa membutuh waktu lama, rentan terjadi kesalahan, kurang efektif dan efisien serta kurang transparan. Tujuan yang ingin dicapai adalah membuat aplikasi SIAKAD berbasis web pada SMPN 1 Wolowaru sehingga meningkatkan efisiensi dan efektifitas pengelolaan data yaitu otomatisasi proses, akurasi data, akses data cepat. Mempermudah akses informasi yaitu informasi terpusat dan transparansi. Perancangan dan pembuatan sistem menggunakan Metode Waterfall, bahasa pemograman PHP dan Database MySQL. Sistem Informasi Akademik Berbasis Web ini memudahkan pengguna yaitu tata usaha sebagai admin dan guru pada SMPN 1 Wolowaru dalam mengelola data akademik dengan akurat, cepat, tranparan, efektif dan efisien.   Kata Kunci: Sistem Informasi Akademik, SMPN 1 Wolowaru, Waterfall, PHP, Database MySQL.

Financial administration plays a crucial role in village-level governance, requiring transparency, accountability, and efficiency in the use of public funds. Currently, the Hameli Ate Village Office still relies on manual methods to manage its financial administration, including recording cash receipts and expenditures using notebooks and simple spreadsheets. This approach presents various issues, such as the risk of data loss, calculation errors, delays in report preparation, and difficulties in tracking and collecting financial transaction data. This study aims to develop a web-based financial administration information system to assist village officials in managing financial data more effectively, efficiently, and in an integrated manner. The methods applied include observation, interviews, and document collection to understand system requirements, while the system development process is implemented using the Waterfall model, which consists of the stages of analysis, design, implementation, testing, and maintenance. The system was built using the PHP programming language and a MySQL database and is designed to generate financial reports automatically and in real time. The testing results show that the system can handle income and expenditure data more quickly, accurately, and in a user-friendly manner. With the implementation of this information system, the financial administration process at the Hameli Ate Village Office becomes more transparent, accountable, and facilitates data-driven decision-making.

Sapi merupakan salah satu hewan ternak yang memiliki nilai ekonomi tinggi, namun rentan terhadap berbagai penyakit, khususnya penyakit pernapasan. Untuk mendukung proses diagnosis penyakit secara cepat dan akurat, diperlukan sistem pakar berbasis teknologi. Penelitian ini bertujuan untuk mengembangkan sistem pakar yang mampu mendiagnosis penyakit pernapasan pada sapi dengan menggunakan metode Naïve Bayes. Metode ini dipilih karena mampu mengolah data dengan pendekatan probabilistik yang efisien serta menghasilkan prediksi yang akurat meskipun dengan data terbatas. Sistem dirancang dalam bentuk aplikasi berbasis web menggunakan bahasa pemrograman PHP dan basis data MySQL. Data gejala dan penyakit diperoleh melalui wawancara dengan dokter hewan, mencakup 16 gejala dan 9 jenis penyakit pernapasan yang umum terjadi, kemudian digunakan sebagai data latih dalam proses klasifikasi. Sistem menerapkan perhitungan probabilitas melalui tahapan prior, likelihood, dan posterior untuk menghasilkan diagnosis yang paling mungkin. Pengujian dilakukan dengan membandingkan hasil diagnosa sistem dengan diagnosa pakar, dan evaluasi menunjukkan bahwa sistem mencapai tingkat akurasi sebesar 90%, yang membuktikan keandalannya dalam penerapan praktis. Selain memberikan hasil diagnosis berdasarkan gejala yang dipilih pengguna, sistem ini juga menampilkan deskripsi penyakit dan saran penanganan. Dengan adanya fitur tersebut, sistem pakar ini diharapkan dapat membantu peternak dalam mendeteksi penyakit pernapasan pada sapi lebih dini, mempercepat proses penanganan, mengurangi kerugian ekonomi, serta menjadi alat teknologi yang mudah diakses untuk mendukung praktik kedokteran hewan di wilayah pedesaan.

BUMDes Wue merupakan lembaga desa yang mengelola layanan air bersih untuk masyarakat Desa Wue, Kecamatan Wolomeze, Kabupaten Ngada. Proses administrasi pembayaran air yang masih dilakukan secara manual menyebabkan berbagai kendala, seperti risiko kehilangan data, keterlambatan pencatatan, serta ketidakefisienan dalam pelaporan. Penelitian ini bertujuan untuk merancang dan membangun sistem informasi administrasi pembayaran air berbasis web yang dapat digunakan oleh BUMDes Wue untuk mengelola data pelanggan, pembayaran, tagihan, dan laporan. Metode pengembangan sistem yang digunakan adalah Waterfall, yang terdiri dari tahapan analisis kebutuhan, desain sistem, implementasi, pengujian, dan pemeliharaan. Sistem ini dibangun menggunakan bahasa pemrograman PHP dan database MySQL, dengan antarmuka yang dirancang agar mudah digunakan oleh petugas BUMDes. Pengujian sistem dilakukan menggunakan metode Black Box Testing dan menunjukkan bahwa seluruh fungsi sistem berjalan sesuai harapan. Hasil penelitian menunjukkan bahwa sistem informasi ini mampu menggantikan sistem manual secara efektif, meningkatkan akurasi pencatatan, efisiensi waktu, serta mempermudah proses pelaporan keuangan dan monitoring pelanggan. Sistem ini juga diharapkan dapat dikembangkan lebih lanjut untuk mendukung notifikasi otomatis kepada pelanggan dan pengelolaan data yang lebih aman dan terstruktur.