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Bulletin of Network Engineer and Informatics (BUFNETS)
Published by GWEX NET PUBLISHER
ISSN : 29874858     EISSN : 29868017     DOI : https://doi.org/10.59688/bufnets
Core Subject : Science,
Computer Science & IT
The Journal invites original articles and is not simultaneously submitted to another journal or conference. Scopes: Information Technology: Software Engineering, Knowledge and Data Mining, Multimedia Technologies, Mobile Computing, Parallel/Distributed Computing, Computer Graphics, Virtual Reality, Data and Cyber Security. Computer Network: Management and Protocol Network, Telecommunication Systems, Wireless Communications, Fuzzy Sensor and Network, Internet of Things, Data Communication and Networking.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 95 Documents
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STRATEGIC IS/IT  PLANNING USING THE WARD AND PEPPARD METHOD AT THE JAMBI PROVINCIAL DEPARTMENT OF COMMUNICATION AND INFORMATICS Afisyah Rahma Aziza; Reni Aryani; Miranty Yudistira
Bulletin of Network Engineer and Informatics Vol. 4 No. 1 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) April 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/5rjkv236

Abstract

The Jambi Provincial Department of Communication and Informatics is responsible for managing communication, information, statistics, cryptography, and information technology services within the provincial government environment. Various Information Systems and Information Technology (IS/IT) initiatives have been implemented to support organizational operations and public service delivery. However, the existing IS/IT implementation has not been supported by an integrated strategic plan, resulting in fragmented information management, limited data sharing among organizational units, independently operated information systems, and several business processes that continue to rely on manual procedures. These conditions reduce operational efficiency, hinder coordination among organizational units, and limit the organization's ability to support integrated digital public services. This study aims to formulate an IS/IT strategic plan for the Jambi Provincial Department of Communication and Informatics using the Ward and Peppard framework. A qualitative approach was employed through interviews, observations, and document analysis. The business and IS/IT environments were analyzed using Critical Success Factors (CSF), SWOT, Business Process Management (BPM), PESTEL, and the McFarlan Strategic Grid. The analysis resulted in a future application portfolio consisting of 17 applications, comprising one Strategic application, two High Potential applications, twelve Key Operational applications, and two Support applications, including both enhancements to existing applications and the development of new applications. The proposed application portfolio provides a strategic roadmap for future IS/IT development by strengthening business–IS alignment, supporting integrated information management, and facilitating sustainable digital transformation within the Jambi Provincial Department of Communication and Informatics.
A DEVOPS-BASED APPROACH TO DIGITAL TRANSFORMATION IN MODERN COOPERATIVES: EVIDENCE FROM PALEMBANG CITY Mardiana Mardiana; Marti Utari; Diah Novita Sari
Bulletin of Network Engineer and Informatics Vol. 4 No. 1 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) April 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/vy3ce668

Abstract

The rapid advancement of digital technology requires cooperatives to improve operational efficiency, transparency, and service accessibility through digital transformation. However, many cooperatives in Palembang City still rely on conventional administrative processes, resulting in inefficient data and transaction management. Therefore, this study aims to implement a DevOps-based approach in developing a digital cooperative system at the Palembang Cooperative and Micro, Small and Medium Enterprise Office.This study applied the DevOps methodology through several integrated phases, including Continuous Development, Continuous Testing, Continuous Integration, Continuous Deployment, and Continuous Monitoring. The system was developed as a web-based platform using NextJS, MySQL, and cloud-based infrastructure to support scalable and reliable cooperative services.The results show that the DevOps approach can effectively accelerate software development and deployment processes while maintaining software quality and system reliability. The developed system supports various cooperative activities, including member data management, savings and loan transactions, cash management, and financial reporting accessible to administrators, operators, and cooperative members digitally. In addition, continuous testing and monitoring mechanisms improved system stability, operational efficiency, and transaction transparency.This study concludes that DevOps can effectively support the digital transformation of modern cooperatives by improving cooperative service quality, operational efficiency, and technology adoption. Furthermore, the digital cooperative system has the potential to increase public engagement and strengthen cooperative competitiveness in the digital era.
DESIGN AND IMPLEMENTATION OF AN ANDROID-BASED E-COMMERCE APPLICATION FOR ALWAFI STORE Aril Maulana; Meilani Wijaya; Emiya Amanda Br Sitepu; Azkia; Rizky Adithya Dzaki; Angga Pratama
Bulletin of Network Engineer and Informatics Vol. 4 No. 1 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) April 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/dr9tz220

Abstract

This study aims to design and develop an Android-based mobile e-commerce application for Alwafi Dessert & Cookies MSME to support digital marketing and online sales activities. The existing sales process was conducted manually through social media and instant messaging applications, causing difficulties in transaction management, payment processing, delivery tracking, and customer service activities. To address these issues, an integrated mobile e-commerce application was developed using Flutter as the mobile framework, Laravel as the backend and web administration platform, Google OAuth 2.0 for customer authentication, Midtrans as the payment gateway, RajaOngkir for address verification and shipping cost calculation, and Leaflet.js for real-time delivery tracking. The system development process employed the Waterfall method, consisting of requirements analysis, system design, implementation, testing, and maintenance stages. The application provides features including product catalogs, shopping carts, digital payments, delivery tracking, a driver application, an admin dashboard, and best-selling product recommendations. System testing was conducted using the Black Box Testing method on 20 functional test scenarios covering customer, administrator, and driver functionalities. The testing results showed that all 20 test scenarios were successfully validated, achieving a 100% success rate, indicating that the application operated according to user requirementsThe developed application improves transaction management, supports integrated online sales activities, and assists MSMEs in adopting digital technology to enhance business operations and service quality.The developed application improves transaction management, supports integrated online sales activities, and assists MSMEs in adopting digital technology to enhance business operations and service quality.
Design and Implementation of a Mobile-Based Language Learning Information System Imam Mualim; Nuari Anisa Sivi; Ruri Supatmi; Roro Fatikhin; Najla Asyila; Arjun Firmansyah
Bulletin of Network Engineer and Informatics Vol. 4 No. 1 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) April 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/cka64a49

Abstract

The rapid development of information and communication technology has driven transformation in various areas of life, including education. One continuously evolving innovation is the use of mobile devices as learning media that are flexible, interactive, and easy for users to access anytime and anywhere. This research aims to design and implement a mobile-based language learning information system that can improve the effectiveness and efficiency of the users’ learning process. The research method used includes stages of analyzing user needs, system design, application implementation, and system testing to ensure the application can operate according to the expected objectives. The developed system is equipped with various key features, such as learning materials for reading, writing, speaking, and listening, interactive exercises, learning evaluation, as well as discussion and user feedback features to enhance interaction between users and the learning system. In addition, the application is designed with a simple and user-friendly interface so it can help users understand the material in a more structured and engaging way. The research results show that the system built is able to provide easy access to learning, increase user engagement in the learning process, and help improve understanding of language learning materials more effectively. System testing also shows that the application can run well on various mobile devices and provides a more efficient learning experience. Thus, this mobile-based language learning information system is expected to be an alternative solution to support modern learning processes and improve the quality of language learning in the digital era.
Implementation of K-Means Clustering and Graph Methods to Enhance the Success Rate of the Bulan Bintang Application Ni Komang Sriasih; Windu Antara Kesiman; I Made Sunarya
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/vscwhj56

Abstract

The BULAN BINTANG (Fostering and Overcoming Bullying in Children) is an application used to find out cases of bullying between students at SMP Negeri 2 Ubud. This application utilizes Sociometery to detect social gaps between students by filling in questionnaires given by the guidance and counseling teacher in each class. The sociometric questionnaire contains the selection of 2 people who are liked in the class and 2 students who are not liked in the class along with their permission. The results of the sociometric questionnaire will be processed using the k-means clustering method to group students who are liked (popular) and students who are not liked (isolated). The results of student grouping will then be processed using the graph method. The graph methods used are directed graphs, combined graphs, weighted graphs and color graphs. From the color graph process, it can be indicated which students are speculated to be potential bullies and targets of bullying. From implementing the k-means clustering and graph method in the BULAN BINTANG application, the BK teacher received 95% satisfaction from the respondents and then obtained an accuracy of 80% matching data for problematic students.
Enterprise Architecture for the Research and Community Service Department of Politeknik Internasional Bali Using the TOGAF ADM M. Setia Dharmawan Suarsana; Kadek Yunita Dewi; I Dewa Ayu Indah Saraswati; Gede Rasben Dantes; Gede Indrawan; I Made Agus Oka Gunawan
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/yq41sd98

Abstract

The Research and Community Service Department (LPPM) of PoliteknikInternasional Bali requires an integrated information system to support the management of research activities, community service programs, monitoring and evaluation processes, publication outputs, grant administration, as well as institutional performance and accreditation data. At present, these activities are managed through separate and largely manual procedures, resulting in challenges such as data duplication, delays in information dissemination, difficulties in document retrieval, reduced operational efficiency, and limited integration across business processes.This study aims to develop an Enterprise Architecture blueprint using the TOGAF Architecture Development Method (ADM) framework to support the design of an integrated information system aligned with organizational requirements. A qualitative research approach was adopted through observations, interviews, and document analysis. The TOGAF ADM phases applied in this study include the Preliminary Phase, Architecture Vision, Business Architecture, Information Systems Architecture, Technology Architecture, and Opportunities and Solutions.The proposed architecture consists of several architectural artifacts, including use case diagrams, an Entity Relationship Diagram (ERD), network topology design, gap analysis, an implementation roadmap, and information technology risk identification. The resulting blueprint addresses six core business domains: research management, community service management, monitoring and evaluation, publication output management, grant management, and institutional performance and accreditation management.The evaluation results indicate that the proposed architecture effectively addresses the operational and informational requirements of LPPM by integrating previously fragmented processes and providing a structured foundation for future information system development. The blueprint was further validated through Focus Group Discussions (FGD) involving LPPM administrators and prospective system users to assess its alignment with organizational needs and existing operational practices. The findings confirm that the proposed architecture accommodates all major functional requirements, demonstrating its suitability as a reference framework for the development of an integrated information system. Consequently, the blueprint is expected to support improvements in operational efficiency, service quality, and digital transformation initiatives within PoliteknikInternasional Bali.
Contribution Of Structural And Semantic Features To Cohesion In Software Module Clustering Using K-Means Sandi Tendean; Stefanie Quinevera
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/09xc7d11

Abstract

Understanding the modular structure of source code is a major challenge in software maintenance. Clustering classes into modules can assist reverse engineering, but its effectiveness depends on feature selection. This study compares the contribution of structural and semantic features to the cohesion of clustering results. Five projects developed using an object-oriented approach of varying sizes are used as test cases. K-means is run 50 times for each scenario, with the number of clusters fixed to the number of original packages. Structural features produce clusters with the highest internal cohesion across all projects, but their alignment with original packages is low. In contrast, semantic features yield very low internal cohesion; however, on three projects they are statistically more aligned with original packages compared to structural features. Feature combination does not provide meaningful improvement; semantic features tend to reduce cohesion without increasing package alignment. These findings indicate that no single feature type is universally best; feature selection must consider project characteristics and the intended goal
Customer Segmentation Using LRFM Model with Self-Organizing Maps and Customer Lifetime Value Analysis I Dewa Gede Aristana; Kadek Alviona Pradnyantari; Ida Bagus Gede Anandita; Gede Rudiharta Pratama Giri; I Made Dwi Putra Asana
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/sphte743

Abstract

Customer segmentation is an essential strategy for understanding customer behavior and supporting effective customer relationship management. However, many customer segmentation studies focus primarily on grouping customers based on behavioral characteristics without considering the economic value of each customer segment. This study proposes a customer segmentation framework that integrates the Length, Recency, Frequency, and Monetary (LRFM) model, Self-Organizing Maps (SOM), and Customer Lifetime Value (CLV) analysis to provide a more comprehensive understanding of customer behavior and value. The study utilized customer transaction data from PT XYZ consisting of 11,233 transaction records involving 7,937 customers during the 2024 observation period. Customer transaction data were transformed into LRFM attributes, normalized using Min-Max Normalization, and clustered using the SOM algorithm. The clustering quality was evaluated using Silhouette Score and Davies-Bouldin Index (DBI), while CLV analysis was employed to assess the economic contribution of each customer segment. The results indicate that the optimal SOM configuration successfully generated three customer segments with a Silhouette Score of 0.6026 and a DBI value of 0.5644. Based on CLV analysis, the identified segments were classified as Core Customers, New Customers, and Lost Customers. The findings demonstrate that each segment exhibits distinct behavioral and economic characteristics, enabling more targeted customer management strategies. The integration of LRFM, SOM, and CLV provides a comprehensive customer segmentation framework that supports customer prioritization, customer relationship management, and data-driven marketing decision-making.
Development of an Iot-Based Automated Plant Monitoring and Watering System Using Two-Input Sugeno Fuzzy Logic Muhammad Viki Agung Prakoso; Ahmad Taqwa; Nasron
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/rdmmvz13

Abstract

Manual plant irrigation often leads to inefficient water usage and delayed responses to changing environmental conditions. This study aims to develop and implement an Internet of Things (IoT)-based monitoring and automatic irrigation system using ESP32 and ESP32-CAM. The proposed system continuously monitors air temperature, humidity, soil moisture, and light intensity while simultaneously capturing plant images for remote observation through a web-based interface. A zero-order Sugeno Fuzzy Logic algorithm is employed to determine irrigation duration based on soil moisture and light intensity inputs, enabling adaptive watering decisions according to environmental conditions. Sensor data and captured images are transmitted to a remote server and displayed through a monitoring website for real-time access. Outdoor testing demonstrated that the system was able to continuously monitor environmental parameters, perform adaptive irrigation based on fuzzy inference results, successfully transmit sensor data to the database, and synchronize captured images with the web platform. The experimental results indicate that the proposed system can provide reliable monitoring and automated irrigation functions, supporting the implementation of IoT-based smart agriculture applications.
Development of a Web-Based Student Violation Recording Application Using the Rapid Application Development (RAD) Method at Muara Beliti State Vocational School Nawwafi Fauziah Amalia; Irma Salamah; R.A Halimatussa'diyah
Bulletin of Network Engineer and Informatics Vol. 4 No. 2 (2026): BUFNETS (Bulletin of Network Engineer and Informatics) October 2026
Publisher : PT. GWEX NET PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59688/hcfapx79

Abstract

Student violation management at SMK Negeri Muara Beliti is still conducted manually using record books, resulting in problems such as data entry errors, inefficient record retrieval, and delays in report generation. This study aims to design and implement a web-based student violation management application using the Rapid Application Development (RAD) method, combined with Role-Based Access Control (RBAC) as a security feature. RAD was selected for its ability to accelerate development through incremental prototyping with active user involvement at each evaluation stage. The development phases include Requirement Planning, User Design, Construction, and Cutover. The system was built using Python with the Flask framework, an SQLite database, and an interface based on HTML, CSS, and JavaScript. RBAC was applied to regulate user access rights according to three defined roles—admin, counseling teacher (guru BK), and student—ensuring data security and integrity throughout the system. System testing was conducted using the black-box testing method across all major features. The results demonstrate that the developed application significantly improves the efficiency of violation recording, management, and reporting compared to the previous manual approach, producing a structured, fast, and accurate information system that meets the needs of the schoolFuture development is expected to integrate a WhatsApp Gateway for automatic notifications to parents and to involve broader-scale user evaluations to further enhance the system's effectiveness.

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