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Muhammad Wali
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Computer Journal
Published by Yayasan YPMMA
ISSN : 29646200     EISSN : 29646219     DOI : https://doi.org/10.58477/cj
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management
Computer Journal, e-ISSN: 2964-6219 and p-ISSN: 2964-6200 is a free and open-access journal published by the Research Division, YPMMA Institute, Indonesia. Computer Journal is an international, scientific, peer-reviewed, open-access computer science journal, including computer and network architecture and human-computer interaction as its main focus, published six months online. Computers Journal is an international, open access journal which provides an advanced forum for computer sciences. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
Arjuna Subject : Ilmu Komputer (semua kategori) - Aplikasi Ilmu Komputer
Articles 92 Documents
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Sistem Informasi Pencatatan dan Pembayaran Layanan Medis Menggunakan Metode Rapid Application Development pada Praktik Mandiri Dokter Lusia Rohyahni; Hery Sunandar; Syafriadi Syafriadi
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.463

Abstract

Dr. Erni Safrita’s private practice still records patient data, examinations, medications, payments, and reports manually. This causes delays in data retrieval, recording errors, payment calculation errors, and difficulties in administrative reporting. This study aims to develop a Medical Service Recording and Payment Information System using the Rapid Application Development (RAD) method. Data were collected through observation, interviews, documentation, and literature review involving a doctor and one staff member. The system was designed using Unified Modeling Language (UML) and implemented with Microsoft Visual Basic 2010 and MySQL. The system provides user authentication, patient and medication management, examination recording, payment processing with automatic cost and change calculations, and period-based report generation. Black-box testing using 11 scenarios showed that all scenarios functioned successfully, achieving a 100% success rate. The results indicate that the system supports medical service recording, payment processing, and administrative reporting in a more structured and computerized manner.
Sistem Informasi Penjadwalan Maintenance Alat Kesehatan Berbasis Desktop Menggunakan Metode Rapid Application Development Roziah Roziah; Hery Sunandar; Hukendik Hutabarat
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.464

Abstract

The medical equipment Maintenance scheduling process at the Hospital Facilities Maintenance Unit (IPSRS) of RSUP H. Adam Malik Medan still faces several problems, including unintegrated schedule management, relatively slow data retrieval, and manual report preparation. This study aims to design a desktop-based Medical Equipment Maintenance Scheduling Information System using the Rapid Application Development (RAD) method. The system was developed as a desktop application using Visual Basic .NET and SQLite with system modeling based on the Unified Modeling Language (UML). Research data were obtained through observation, interviews, and documentation, with observations conducted on 50 medical equipment Maintenance history records. The system provides 9 main functional groups, including login and access rights, dashboard, medical equipment data management, technician data management, Maintenance scheduling, Maintenance history, notifications, reporting, and logout. Testing was conducted using Black Box Testing on 28 test cases, and all test cases obtained valid results, with a 100% success rate (28/28). These results indicate that all main system functions operated according to the functional requirements and supported a more structured medical equipment Maintenance management process.
Pengembangan dan Evaluasi Sistem Informasi Peminjaman Barang Berbasis Google Apps Script Albert Michael Putra Yochanan; Singgih Jatmiko
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.470

Abstract

Item-loan administration in one subdivision still relies on physical handover forms and non-centralized records, making loan status and history difficult to trace. This study developed and evaluated an item-loan information system based on Google Apps Script. The study applied the Waterfall model, covering requirements analysis, design, implementation, testing, and maintenance. Evaluation involved six actual users through total sampling, comprising three officers and three administrators. Functional suitability was assessed using User Acceptance Testing (UAT), while usability was measured using the System Usability Scale (SUS). The UAT score reached 90.56%, with 88.89% for officers and 92.22% for administrators. The mean SUS score was 74.58, categorized as acceptable and good, although three respondents scored below the reference value of 68. Implementation reduced physical-document searches, improved record completeness and loan traceability, and centralized data. The system met functional needs but still requires improvements in initial guidance, activity notifications, stock checks, and handover reporting. The results are limited to six users in one subdivision.
Penerapan Metode OWASP IoT Top 10 dalam Analisis Kerentanan Keamanan Perangkat Internet of Things: Studi Kasus Smart Waste Arif Rahman Hakim; Rizki Surya Permana; Demi Adidrana; Hertanto Suryoprayogo; Deny Haryadi
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.471

Abstract

This study examines security vulnerabilities in a publicly accessible IoT-based smart waste system using Nmap, Wireshark, and OWASP ZAP to assess network services, packet traffic, and the web application layer. Results were mapped to the OWASP IoT Top 10 (2018). Because the assessment was external black-box testing without exploitation, the mapping is indicative rather than comprehensive. Nmap identified several active TCP ports, although only six open ports were explicitly documented. Wireshark captured 62,591 packets, indicating port-scanning activity and ongoing TCP communication. OWASP ZAP identified 14 web application weaknesses: six medium, five low, and three informational, with no high-risk findings. Four OWASP IoT Top 10 categories (I2, I3, I7, and I9) were supported by direct evidence, while I1 and I5 require further verification and I4, I6, I8, and I10 were outside the testing scope. Key risks involved insecure network services, default settings, and inadequate data protection during transmission and storage.
Analisis Faktor Risiko Penyelesaian Skripsi Mahasiswa Sistem Informasi Menggunakan Exploratory Factor Analysis (EFA) Risah Subariah; Endin Fahrudin; Samso Supriyatna
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.472

Abstract

Delayed study completion among undergraduate students is a complex issue associated with the interplay of internal and external factors. This study aims to identify and examine the dimensions of risk factors associated with delayed study completion among Information Systems students using Principal Component Analysis (PCA) with Varimax rotation. Primary data were collected through a structured questionnaire administered to 299 undergraduate students of the Information Systems Study Program, semesters 3 to 8, at UNPAM Viktor Campus, covering 17 operational indicators. The analysis reduced the 17 indicators into 4 major risk factor dimensions, explaining 50.15% of the total variance: (1) Mobilization & Work Factor (14.02%), (2) Lecturer Mentorship Factor (14.28%), (3) Academic Competence Factor (13.07%), and (4) Assistance & Integrity Factor (8.78%). Factor 4 (Assistance & Integrity) was characterized by indicators related to dependence on external resources, including the use of third-party/joki services (0.717), peer assistance (0.598), and AI tools (0.592). Factor loading evaluation also identified two weak indicators (trap items) with loadings below 0.40: P1 (Employment Status; 0.363) and P4 (Primary Transportation Mode; 0.194). These findings highlight the importance of hybrid thesis mentoring, assignment load management, and academic integrity oversight to support timely study completion.
Implementasi Sistem Manajemen Keuangan Dan Dashboard Penjualan Berbasis Web Pada Usaha Hanbai Fotocopy Marsa Rifqa; Untung Surapati; Mesra Betty Yel
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.473

Abstract

This research is motivated by problems faced by photocopy businesses, which still rely on manual, paper-based recording of cashier transactions and financial bookkeeping. This conventional approach is prone to human error, carries a high risk of data loss, and is inefficient for daily operations. This study therefore designs, builds, and implements a web-based Financial Management System and Sales Dashboard (Point of Sales) for Hanbai Fotocopy. The main innovation is the use of Google Apps Script as the server-side backend and Google Sheets as the database, combined with Bootstrap 5, Chart.js, and jsPDF on the client side. The system was developed using the Waterfall method, covering requirements analysis, system design, coding, and Black-Box testing. The resulting cloud-based cashier and financial-recording application automates sales transaction recording, supports cash and non-cash payment methods, updates stock automatically, records operational expenses, and presents real-time cash-flow visualization on an interactive dashboard. Black-Box testing confirmed that authentication, transaction calculation, stock reduction, chart updates, and PDF report export all function as expected. By relying on the Google Workspace ecosystem, the system minimizes hardware and hosting costs while improving the accuracy, speed, and transparency of financial monitoring for the business owner.
Rancang Bangun Company Profile Berbasis Web pada BKB PAUD Ceria Menggunakan Metode Waterfall dan Numerik untuk Meningkatkan Pengetahuan Orang Tua terhadap Informasi Sekolah Irma Nur Najwa; Dwi Swasono Rachmad; Mesra Betty Yel
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.478

Abstract

BKB Paud Ceria is an early childhood education institution that has traditionally disseminated school information through manual channels, requiring prospective students’ parents to visit the school. This study aims to develop a web-based company profile using WordPress as a medium for information and promotion. The system was developed using the Waterfall method over four months (May–August 2026), with system design represented through use case, activity, and class diagrams. Functional testing used Black Box Testing with fourteen scenarios, while user acceptance was evaluated using a ten-item Likert-scale questionnaire covering Usability, Reliability, and Usefulness. The questionnaire was distributed through Google Forms to 27 respondents selected using purposive sampling. The results show that all fourteen test scenarios were valid (100%), while the User Acceptance Test obtained a score of 1,234 out of 1,350, equivalent to 91.4%, which falls into the Very Good category. The results indicate that the website was well accepted as a medium for providing school information and supporting communication with parents through its integrated WhatsApp feature.
Implementasi Internet of Things pada Sistem Absensi Mahasiswa Berbasis RFID dengan Monitoring Data Real-Time Bachrul Ulum Fajar Arrafi; Kiki Setiawan; Mesra Betty Yel
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.479

Abstract

The development of Internet of Things (IoT) technology supports the implementation of automated student attendance systems to address limitations in attendance recording, data recapitulation, and real-time monitoring. This study aims to implement a Radio Frequency Identification (RFID)-based student attendance system integrated with IoT. The Prototype method was used, consisting of requirement analysis, system design, implementation, and testing. The system utilizes an RFID Reader RC522, NodeMCU ESP8266, HTTP Request communication, PHP API, and MySQL database. RFID data is transmitted through a Wi-Fi network and displayed on a web-based dashboard. Testing with 10 trials resulted in a 100% success rate for UID reading, data transmission, student validation, attendance data storage, and dashboard visualization. The average response time from card detection to data display on the dashboard was 1.82 seconds. These results indicate that the system can support real-time IoT-based student attendance monitoring.
Penerapan Data Mining dalam Menentukan Kategori Barang Rongsokan Berdasarkan Frekuensi Penjualan Menggunakan Algoritma Naive Bayes Sutisna Sutisna; A'allya Nabilla; Mesra Betty Yel
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.486

Abstract

This study was motivated by the manual transaction recording system used at Lapak Pak Iyan, an MSME engaged in scrap goods collection in Rawalumbu, East Bekasi. This condition makes it difficult for the owner to identify frequently traded types of scrap goods, so purchasing decisions are not yet supported by structured data. The research aims to apply data mining using the Naive Bayes algorithm to classify scrap goods based on sales frequency into three categories: High-Selling, Moderate-Selling, and Low-Selling. The research methods include data collection, preprocessing, calculating item frequencies, category labeling, and classification using RapidMiner Studio. The dataset consists of 63 transaction records from January to June 2026 covering seven types of scrap goods. Model testing is conducted using Leave-One-Out Cross Validation (LOOCV) because the available dataset is relatively small. The classification results are expected to provide practical guidance for the owner in prioritizing purchasing decisions based on historical sales patterns. Naive Bayes successfully classified the seven types of scrap goods into three categories with an accuracy of 100%. Therefore, the results can be used as a reference to improve stock management efficiency.
Platform Digital Pemesanan Iklan PT Sumatera Ekspres Berbasis Dashboard Analitik dan Notifikasi WhatsApp Ilham Apriliansah; Muhammad Izman Herdiansyah; Dinny Komalasari; Muhammad Nasir
Computer Journal Vol. 4 No. 2 (2026): August
Publisher : Yayasan Pendidikan Mitra Mandiri Aceh (YPMMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58477/cj.v4i2.487

Abstract

PT. Sumatera Ekspres still relies on manual recording of advertisement bookings and customer data. Therefore, this study aims to design and develop a web-based information system for advertisement booking and customer management that integrates an analytics dashboard with an automatic WhatsApp notification feature. The study employs the Research and Development (R&D) method combined with the Rapid Application Development (RAD) approach, comprising the Requirements Planning, User Design, Construction, and Implementation stages. The system was developed using the Laravel framework, MySQL database, and Fonnte API for WhatsApp integration, and was evaluated using Black Box Testing. The results show that the system successfully digitizes and integrates advertisement booking and customer data management, provides real-time data visualization through a Chart.js-based analytics dashboard, and automatically sends WhatsApp notifications to customers. Black Box Testing of 10 scenarios showed that all scenarios were valid, indicating that the tested features functioned according to their specifications. The integrated platform provides a more structured and centralized approach to managing advertisement and customer data at PT. Sumatera Ekspres.

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