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International Journal Science and Technology (IJST)
Published by Asosiasi Dosen Muda Indonesia
ISSN : 28287223     EISSN : 28287045     DOI : https://doi.org/10.56127/ijst.v1i2
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
International Journal Science and Technology (IJST) is a scientific journal that presents original articles about research knowledge and information or the latest research and development applications in the field of technology. The scope of the IJST Journal covers the fields of Informatics, Mechanical Engineering, Electrical Engineering, Information Systems and Industrial Engineering. This journal is a means of publication and a place to share research and development work in the field of technology.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 132 Documents
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Usability Analysis of the Sahabatku Application using the System Usability Scale Tissa Maharani
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2174

Abstract

After COVID-19, various mental health issues have been increasing. This is where the important role of information technology comes in, one of which is in the implementation of counseling, which has shifted from face-to-face to online. The Sahabatku application is one of the psychological counseling applications created as an effort to improve mental health. The purpose of this study is to identify the usability value of the Sahabatku application so that it can provide development ideas for developers in the future and to ensure that users of the application are satisfied as they achieve their counseling goals. This research took place from November 2024 to February 2025, using a System Usability Scale questionnaire consisting of 10 questions with a Likert scale of 1-5 to 61 students aged 17-21 majoring in psychology who had never used the application at all. This study concludes that the Sahabatku application received SUS score of 64, placing it at Grade C-, the Adjective scale is rated as OK, the Acceptability scale is marginally accepted, and the NPS score is classified as passive.
Analysis Large Language Model (LLM) for Digital Transformation in a Ministry Andre Pratama Adiwijaya
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2194

Abstract

Digital transformation in government requires the use of cutting-edge technology to improve efficiency and accuracy in decision-making. Ministries are strategic institutions that manage large-scale data and information, particularly related to regional government administration and population affairs. This article examines the application of Large Language Models (LLM) as an artificial intelligence (AI)-based solution to assist document processing, information extraction, and policy analysis. The study presents a relevant legal framework, LLM model recommendations, a schematic diagram of LLM implementation from end-to-end, and Python code examples for technical simulations. This approach is expected to strengthen the Ministry's digital system in accordance with the guidelines of the Electronic-Based Government System (SPBE) and One Data Indonesia.
Design and Development of a Negative Pressure Wound Therapy Device Citra Ananda Adri Hanifa; Mohammad Rofi’i; Patrisius Kusi Olla
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2199

Abstract

This study presents the design and development of a Negative Pressure Wound Therapy (NPWT) device aimed at improving the treatment of chronic wounds, particularly diabetic foot ulcers in patients with diabetes mellitus. The primary objective is to create an efficient, user-friendly, and portable wound therapy solution suitable for both clinical and home-based care. The device utilizes negative pressure to enhance blood perfusion, reduce exudate, and lower infection risk, thereby accelerating the healing process. The system is built using a NodeMCU ESP32 microcontroller, a vacuum motor pump, HX710 pressure sensor, solenoid valve, and a Nextion LCD interface. It supports three therapy modes—Continuous, Intermittent, and Dynamic—controlled by a PID algorithm to maintain stable pressure between -25 to -150 mmHg. Testing was conducted at three measurement points: battery voltage, sensor accuracy, and LCD interface functionality. Results indicate that the device performs effectively within expected operational parameters across all modes. The NPWT prototype offers a cost-effective, functional alternative for wound care management and shows promise for further development, including digital integration and broader clinical applications.
A Systematic Review of Geothermal-Solar Hybrid Systems: Design, Performance, Operational Advantages, and Configuration Principles Richard Wempie Vicky Uguy; Estrela Bellia Muaja
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2204

Abstract

Indonesia’s dependence on fossil fuels has resulted in significant environmental degradation and contributes to rising CO₂ emissions, despite the country’s vast renewable energy potential. Geothermal and solar energy, as two of the most promising clean energy sources, offer complementary characteristics that can be leveraged in hybrid power systems. This study aims to identify optimal configuration strategies for hybrid geothermal–solar systems and evaluate their operational advantages over standalone geothermal plants in the Indonesian context. Employing a Systematic Literature Review (SLR) approach, this research synthesizes findings from recent literature (2012–2024) across major scientific databases. The review focuses on system design, working principles, thermodynamic performance, and implementation feasibility. Results show that preheating/superheating configurations using solar input can significantly enhance geothermal plant efficiency, increase brine enthalpy, and reduce scaling issues—common challenges in Indonesian geothermal operations. Hybrid systems demonstrate an average efficiency gain of 3–7% over conventional configurations. While these systems offer improved reliability, flexibility, and land use optimization, they also involve technical complexity and high capital costs. This study underscores the potential of geothermal–solar hybrid systems to support Indonesia’s clean energy transition by increasing plant efficiency, reducing emissions, and optimizing renewable resource utilization.
Design Thinking: A Practical Method for Designing Stress Management Application Interfaces Using a Biomicroscopy Approach Ernianti Hasibuan; Karin Rehulina; Evans Winanda Wirga
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2207

Abstract

Academic stress is a significant challenge frequently faced by final-year students and can negatively impact their mental health and academic performance. This study aims to design a user interface for a stress management application using Design Thinking methods and a biomimicry approach, an approach that mimics natural patterns and principles to create more intuitive and effective design solutions. The research process involved in-depth interviews and usability testing with final-year students as the primary respondents. The results showed that the application of biomimicry principles in interface design can create an atmosphere resembling a natural environment that supports relaxation and provides a calming effect for users. Testing using the System Usability Scale (SUS) yielded an average score of 89.38, which falls into the Acceptable and Excellent categories based on the Adjective Rating scale. These findings indicate a very good level of acceptance and a satisfactory user experience. The implementation of the Design Thinking method, starting from the empathize stage to the prototype and test, combined with the biomimicry approach, successfully produced an interface design that is not only aesthetically pleasing and functional but also effective in helping students cope with academic stress.
Integrated System Development to Support the Implementation of Tri Dharma of Higher Education by Lecturers at the Indonesia Civil Pilot Academy of Banyuwangi As ari, Hasyim; Miko Andi Wardana; Putra Wicaksono; Fajar Islam
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2208

Abstract

Abstract: In the pursuit of producing quality professional human resources in the field of aviation, Indonesian Aviation Academy (API) Banyuwangi is one of the government agencies under the educational institutions. The Banyuwangi Ministry of Transportation institute gave its best shot, requiring an appealing integrated information system for better activities by lecturers and academic staff in applying education, research, and community service. This system shall make work more effective and efficient by digitalizing academic planning recording, and reporting as well as providing Collaborative features amongst researchers’ scientific publication repositories that may be stored quite tidily. Besides this platform for proper transparent Community Service Programs it also marks a strategic move forward toward making API Banyuwangi one of the Leading globalized aviation education institutions which Government’s digital transformation reform agenda in Higher Education supports. Keywords: API Banyuwangi, going digital, teachers, digital change, academic info system.
Design of Backend API Payment Gateway System Implementation to Minimize Fraud and Facilitate Payment Transactions at Hattrick Online Game Cafe Maulana, Wisnu Sukma
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2224

Abstract

Hattrick Online Game Cafe has branches in two cities, namely Pemalang and Depok. In addition, this cafe operates almost 24 hours a day, seven days a week, with cashier operations carried out on a morning and evening shift schedule. Furthermore, payments are still made in cash. These conditions have led to several challenges, such as the inability to monitor financial transactions in real time, which could result in fraud or manipulation of cash flow. Another challenge is the need for meticulous attention to detail in calculating payment amounts and cash refunds given by customers to cashiers. Cashier staff may make errors due to fatigue during their shifts, and there is also a need for cash inventory counts as a means of refunding in payment transactions. Finally, the main challenge is the need for transparent and precise financial reports for the café owner as a means of accountability to investors who have and will invest capital in the development of the Hattrick Online Game Café business. Therefore, research on the design and implementation of a backend API Payment Gateway system as a means of customer payment transactions at the Hattrick Online Game Café is expected to address all these issues.
Comparison of Machine Learning and Deep Learning in Shopee Review Sentiment Analysis Kuwat Setiyanto; Azzahra Dania Indriyani
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2225

Abstract

This study aims to compare the performance of Machine Learning algorithms (Random Forest and Support Vector Machine) and a Deep Learning model (Long Short-Term Memory) in analyzing user review sentiment of the Shopee application. A total of 50,000 Indonesian-language reviews were collected through web scraping from the Google Play Store. After preprocessing and feature extraction, the three models were developed and evaluated using accuracy, precision, recall, and F1-score metrics. The results indicate that the LSTM model achieved the best performance in classifying sentiment into three categories: positive, negative, and neutral. Furthermore, the model was implemented into an interactive sentiment analysis dashboard using Streamlit, enabling users to explore and test sentiment in real time. This research demonstrates that the application of Machine Learning and Deep Learning technologies is effective in analyzing public opinion and can support strategic decision-making in the context of e-commerce.
Smart Presentation Control Using Hand Gesture Recognition Setyowati, Lilis; Hans Naufal Granito
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2244

Abstract

Presentation is an activity conducted to express opinions in public, aimed at decision-making or providing new insights on a particular matter. During presentations, audience engagement often suffers due to several disruptions faced by the speaker, such as having to pause to change slides, mismatched transition timing by the moderator when changing slides, and other issues. In order to avoid these distractions, Smart Presentation Feature is designed to provide an effective presentation experience. This feature runs on Windows operating system and is developed using MediaPipe, OpenCV, PyAutoGUI, win32gui module, PyInstaller, and a virtual environment using Miniconda. This feature works by reading the user’s hand gesture to determine the control actions for the presentation. According to a user satisfaction questionnaire consisting of 11 questions, each with 5 criteria ranging from “Strongly Disagree” to “Strongly Agree”, The final score was 89.26% in total, which translates to “Strongly Agree”. This signifies that users are satisfied with the Smart Presentation Feature.
Tiktok Social Media Analysis of Content for Your Page with AHP (Analytical Hierarchy Process) Method Aulia, Nuning Khanif
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2245

Abstract

With increasing competition in the content market, social media users are required to constantly monitor the situation and competitiveness of the market when determining their strategies as content creators. Using TikTok can help increase daily live mobilization. Effective decision-making using the AHP method can play a crucial role in determining competitive strategies, enabling content creators to determine which social media platforms to use to maintain their daily activities. This study utilized primary data through direct observation of content creators with over 10,000 followers and administered a questionnaire. In line with this issue, this study employed the Analytical Hierarchy Process (AHP) method to determine the decisions of content creators in expressing their creative ideas. The AHP model utilizes all available information to determine criteria for social media platforms, allowing for a more comprehensive and accurate analysis.

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