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All Journal Journal of Computer Networks, Architecture and High Performance Computing ITIJ
Alam, Fajar Indra Nur
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Computer Science & IT Education Electrical & Electronics Engineering

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FUZZY LOGIC-CONTROLLED IOT SYSTEM FOR SMART PUBLIC TOILETS: DESIGN, IMPLEMENTATION, AND EVALUATION Arifani, Kahpi Baiquni; Irsyadi, Muhamad Haidir; Prakoso, Akbar Tri; Amrullah, Ahmad Wildan; Alam, Fajar Indra Nur; Prasetya, Dwi Arman; Sari, Anggraini Puspita
Journal of Computer Networks, Architecture and High Performance Computing Vol. 7 No. 3 (2025): Articles Research July 2025
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v7i3.6045

Abstract

Efficient energy management in public facilities such as public toilets has become an important challenge in the modern era, especially with the increasing demand for environmental sustainability. In this research, we developed a smart toilet system based on the Internet of Things (IoT) using the ESP32 as the main microcontroller and fuzzy logic methods for intelligent decision-making. This system is equipped with temperature (DHT22), humidity, and distance (HC-SR04) sensors to detect environmental conditions and user presence. Based on this data, the toilet fan and light are automatically controlled to minimize energy consumption. To facilitate real-time monitoring and threshold control, this system is integrated with a Flutter-based application, which provides an intuitive user interface for viewing environmental data and setting temperature, humidity, and distance thresholds. Fuzzy logic is used to determine the fan speed based on temperature and humidity inputs, with the output being a gradual fan speed control. (PWM). The test results show that the system can reduce energy consumption by up to 30% compared to the manual method, especially by reducing the unnecessary device idle time. Additionally, the system has an average response time of 200 ms to send sensor data to the application and receive threshold updates from the user. With this approach, the research shows that the integration of IoT with fuzzy logic provides significant energy efficiency and enhances the user experience. This research also opens up opportunities for further development, such as the integration of machine learning technology for predicting facility usage patterns or the implementation of additional sensors for air quality detection. These findings support the implementation of IoT-based automated systems in public facilities to achieve energy efficiency and environmental sustainability.
The Evaluation of User Interface and User Experience in the New Student Admission System : Case Study: New Student Admission System at UPN Veteran Jawa Timur Alam, Fajar Indra Nur; Harya, Gyska Indah
Information Technology International Journal Vol. 3 No. 1 (2025): Information Technology International Journal
Publisher : Magister Teknologi Informasi UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/itij.v3i1.41

Abstract

In the current digital era, information technology plays a crucial role in various aspects of life, including education. One notable application is the digital-based new student registration system, designed to replace manual methods that are time-consuming, error-prone, and inefficient. While digital systems aim to streamline the registration process, their success is heavily reliant on the quality of their User Interface (UI) and User Experience (UX). Poor UI/UX design can lead to user confusion, frustration, and registration failure. This study evaluates the UI and UX of the new student registration system implemented by UPN Veteran Jawa Timur. Using usability testing and heuristic evaluation, the research identifies challenges in navigation and interface design that hinder user satisfaction. The findings offer actionable recommendations to improve system efficiency and user-friendliness. This study not only contributes to enhancing the registration process for UPN Veteran Jawa Timur but also serves as a reference for similar systems aiming to optimize their UI/UX design.
Application of Google cloud computing for web-based library information systems at Bahayangkara University Surabaya Irsyadi, Muhammad Haidir; Alam, Fajar Indra Nur; Sari, Anggraini Puspita; Agussalim, Agussalim
Journal of Computer Networks, Architecture and High Performance Computing Vol. 7 No. 4 (2025): Articles Research October 2025
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v7i4.6955

Abstract

Libraries are essential in academic work as they expose people to structured, easily procurable information.  However, the majority of schools, including Bhayangkara University Surabaya, still face challenges in managing and storing library information because local or manual systems are substandard. The goal of this project is to deploy and test the effectiveness of Google Cloud Computing technologies, such as Google Cloud Storage, Google Cloud SQL, and Google Compute Engine, on a website-based library information system.  We adopted a quantitative approach by performing experiments and system testing, i.e., black-box testing, access speed testing, and heavy load resistance testing. The result of the implementation is massive benefits, including a response time of 2 seconds on average, stability with 500 users at the same time, and storage efficiency at just 30% of the original size.  Other colleges can have an example that they can use to make a change to a cloud-based digital library from this research.  This also helps create digital library information systems that are technology-centered and dependable.
Co-Authors Agussalim, Agussalim Amrullah, Ahmad Wildan Anggraini Puspita Sari Arifani, Kahpi Baiquni Dwi Arman Prasetya Harya, Gyska Indah Irsyadi, Muhamad Haidir Irsyadi, Muhammad Haidir Prakoso, Akbar Tri