cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Rijois Iboy Erwin Saragih
Contact Email
rijoissaragih@gmail.com
Phone
+6282163892782
Journal Mail Official
rijoissaragih@gmail.com
Editorial Address
Jl. Karya Bakti Gg. Dame No. 95, kelurahan Indra Kasih, Kecamatan Medan Tembung, Sumatera Utara
Location
Kota medan,
Sumatera utara
INDONESIA
International Journal of Information System and Innovative Technology
Published by Geviva Edukasi Trans Teknologi
ISSN : -     EISSN : 29647207     DOI : https://doi.org/10.63322/ijisit
Core Subject : Science,
Computer Science & IT
IJISIT (International Journal of Information System and Innovative Technology) is a peer-reviewed journal in Applied Information Technology published twice a year in June and December and organized by the PT Geviva Edukasi Trans Teknologi. Focus & Scope International Journal of Information System & Innovative Technology aims to publish original research results on the implementation of the information systems. International Journal of Information System & Innovative Technology covers a broad range of research topics in information technology. The topics include but are not limited to avionics. 1. Artificial Intelligence and Soft Computing 2. Computer Science and Information Technology 3. Telecommunication System and Security 4. Digital Signal, Image and Video Processing 5. Automation, Instrumentation and Control Engineering 6. Internet of Things, Big Data and Cloud Computing
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 4 No. 2 (2025): December" : 5 Documents clear
Optimizing Natural Language Processing Using ChatGPT for Automated Question and Answer Systems in Public Services Lubis, Mhd. Dicky Syahputra; Sabila, Puji Chairu
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/y3d3yr10

Abstract

The use of artificial intelligence (AI) technology is growing rapidly in various sectors, including public services. One of the main challenges in digital public services is how to provide answers that are fast, accurate, and easy for the public to understand. Natural Language Processing (NLP) is key in the development of automated question-and-answer systems. This study evaluates and optimizes the use of ChatGPT as an NLP model in a question-and-answer-based public service system. The methods used include literature review, system design, prototype implementation, and performance evaluation based on accuracy, response speed, and user satisfaction. The results show that ChatGPT can increase answer accuracy by up to 88%, reduce the average response time to 2.9 seconds, and increase user satisfaction to 85%. The system is also able to adapt its language style to make it more understandable to the public. These findings indicate that ChatGPT can be effectively integrated into digital public services, with important considerations regarding ethics, data security, and bias mitigation.
A Data Mining Approach to Clustering Cases of Violence Against Children in Indonesia Agnes Irene Silitonga; Silitonga, Agnes Irene
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/tc9nng05

Abstract

Violence against children in Indonesia remains a crucial issue that requires a data-driven approach for more targeted interventions. This study aims to cluster provinces in Indonesia based on the number of cases of violence and the types of violence committed, namely physical, psychological, and sexual violence. The method used in this study is the K-Means Clustering algorithm, an unsupervised learning technique in data mining that is able to find hidden patterns in large data sets. Data was obtained from the Ministry of Women's Empowerment and Child Protection's Gender and Child Information System (SIGA), which covers 38 provinces. The clustering results produced three main groups: a cluster with high levels of violence consisting of the provinces of North Sumatra, DKI Jakarta, West Java, Central Java, and East Java; a cluster with moderate levels of violence consisting of 16 provinces; and a cluster with low levels of violence covering 17 provinces. These findings are expected to form the basis for the development of evidence-based child protection policies geographically and thematically.
Reconfigurable Dual Band Antenna using Varactor Diode Mohammed Ahmedalsayaghi, Ali; Sabapathy, Thennarasan; Nasrun Osman, Mohamed; Rooban Gunasekaran, Shanmuka; Kumari Gollu, Sri Man; Poripireddy, Divya Gayathri
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/1epsgh59

Abstract

This paper presents a dual-band frequency reconfigurable microstrip antenna integrated with an Electromagnetic Band Gap (EBG) structure for modern wireless communication applications. The proposed antenna operates at two key frequency bands of 1.8 GHz and 2.4 GHz and is fabricated on a Rogers 4003C substrate to achieve low dielectric loss and stable radiation performance. Frequency reconfigurability is achieved by embedding varactor diodes across strategically etched slots on the radiating patch, allowing continuous tuning through DC bias voltage control without altering the physical structure of the antenna. The EBG structure is employed to suppress surface wave propagation and enhance antenna gain and radiation stability. Simulation and experimental results demonstrate effective frequency tuning from 1.68–1.88 GHz and 2.38–2.81 GHz with stable impedance matching and directional radiation patterns. The proposed antenna is suitable for compact and reconfigurable wireless systems such as IoT and 5G applications.
Reflection Phase Characterization of Metasurfaces Enabling Reflection and Transmission in Wireless Systems Maniam, Rajkumar; Sabapathy, Thennarasan; Nasrun Osman, Mohamed; Jusoh, Muzammil; PICHANDI, SIDDARTH
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/2wzh1z83

Abstract

This paper presents the design and analysis of metasurfaces for surface-based wireless communication systems. Metasurfaces are widely used as reflecting or transmitting surfaces in wireless communications. The reflection phase characteristic of a metasurface plays an important role in determining its operating behavior, namely whether it functions as a reflector or a transmitter. In this work, a comprehensive analysis is conducted to obtain two distinct reflection phase characteristics of metasurface unit cells. The unit cells are analyzed at an operating frequency of 3.5 GHz. It is observed that the unit cell exhibits a reflection phase close to 0° when designed using two rectangular rings, while a reflection phase close to 180° is achieved when the unit cell is modeled as a square ring. In both designs, the unit-cell substrate size is fixed at 16.25 × 16.25 mm². The presented reflection phase characterization provides a clear design guideline for selecting metasurface unit-cell geometries to support reflection and transmission functionalities in future surface-based wireless communication systems.
Dipole Antenna Radiation Pattern Optimization Using Parasitic Element Size and Location Maniam, Rajkumar; Sabapathy, Thennarasa; Nasrun Osman, Mohamed; Gunasekaran, Shanmuka Rooban; Jusoh, Muzammil
International Journal of Information System and Innovative Technology Vol. 4 No. 2 (2025): December
Publisher : Geviva Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63322/y85amh14

Abstract

This work focuses on refining the radiation pattern of a dipole antenna by introducing a parasitic element and carefully adjusting its size and position. A dual‑band response emerges when the parasitic element is set to a width of 9 mm. The study explores dimensions of 0.98 Wh, 0.90 Wh, 0.70 Wh, and 0.75 Wh. For the first three cases, the element is placed 9.4 mm away from the dipole antenna. In the 0.75 Wh case, however, the spacing is increased to 11.8 mm, which produces a clear improvement in gain. These results show how subtle changes in geometry and placement can significantly influence antenna performance, offering a straightforward path to achieving dual‑band operation with enhanced radiation characteristics.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2025 2025


Reset
Filter By Issues
All Issue Vol. 4 No. 2 (2025): December Vol. 4 No. 1 (2025): June Vol. 3 No. 2 (2024): December Vol. 3 No. 1 (2024): June Vol. 2 No. 2 (2023): December Vol. 2 No. 1 (2023): June Vol. 1 No. 2 (2022): December Vol. 1 No. 1 (2022): June