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INDONESIA
INFOKUM
Published by SEAN INSTITUTE
ISSN : 23029706     EISSN : 27224635     DOI : -
Core Subject : Science,
Computer Science & IT
The INFOKUM a scientific journal of Decision support sistem , expert system and artificial inteligens which includes scholarly writings on pure research and applied research in the field of information systems and information technology as well as a review-general review of the development of the theory, methods, and related applied sciences. Software Engineering. Image Processing Datamining Artificial Neural Networks
Arjuna Subject : Ilmu Komputer (semua kategori) - Kecerdasan Buatan
Articles 860 Documents
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The Transmission of Terrorist Movements in Sulawesi through the Narrative of the Islamic State of DI/TII (1953-1965) Subair, Ahmad
INFOKUM Vol. 14 No. 01 (2026): Infokum, January - February 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i01.3074

Abstract

This study analyses the transmission of the narrative of the Darul Islam/Indonesian Islamic Army (DI/TII) movement in Sulawesi led by Kahar Muzakkar (1953–1965) into the ideology of contemporary terrorist groups in the region. Using historical methods within a Systematic Literature Review (SLR) framework, the study reveals the mechanisms of transmission through kinship networks, informal education, and the circulation of literature that mythologises the history of this resistance. The findings show that the DI/TII narrative has been adapted and synthesised with transnational ideologies such as ISIS, resulting in historical-emotional legitimacy for groups such as Mujahidin Indonesia Timur (MIT). This process of ‘glocalisation of jihad’ confirms that counter-terrorism approaches in Sulawesi must critically consider the historical roots and memory of local conflicts, in addition to countering global narratives.
Laptop Price Prediction Based on Technical Specifications Using the Random Forest Algorithm Syahrani, Nabillah Nasywa; Wahyudi, Satria Nouval; Afendra, Antonious Ariel; Septiani, Wisti Dwi; Abdul, Syaifur Rahmatullah
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3066

Abstract

This study develops a laptop price prediction model based on technical specifications using the Random Forest Regressor algorithm. The dataset, obtained from publicly available platforms such as Kaggle, comprises several key attributes, including brand, device category, processor type, user rating, and price. The analytical procedure involves data preprocessing, categorical feature encoding, model training, and performance evaluation. The evaluation results demonstrate strong predictive performance, with an R² value of 0.938, an RMSE of 22,021, and an MAE of 12,667, indicating high prediction accuracy and the model’s ability to explain more than 93% of the variance in laptop prices. These findings suggest that the Random Forest algorithm is highly effective for developing specification-based laptop pricing models and shows substantial potential for implementation in e-commerce platforms and automated pricing recommendation systems.
Strategy for Strengthening Fiscal Independence Thru Optimization of Regional Original Revenue (PAD): A Study on Lebak Regency, Banten Province Rusito, Rusito; Jumanah, Jumanah
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3080

Abstract

This study aims to analyze strategies for strengthening fiscal independence through the optimization of Local Own-Source Revenue (PAD) in Lebak Regency, Banten Province. The research employs a descriptive qualitative approach supported by quantitative data obtained through observation, in-depth interviews, and documentation studies. The analysis focuses on the main dimensions within the framework of fiscal decentralization (Fiscal Federalism), namely revenue assignment, expenditure assignment, intergovernmental transfers, and fiscal accountability and efficiency in regional financial management. The results indicate that the level of fiscal independence in Lebak Regency remains relatively low, as the regional revenue structure is still dominated by transfers from the central government. The contribution of Local Own-Source Revenue (PAD) to total regional revenue remains limited compared to intergovernmental transfers such as the General Allocation Fund (DAU), Special Allocation Fund (DAK), and Revenue Sharing Fund (DBH). This condition suggests that the capacity of the regional government to optimize local revenue sources needs to be strengthened through improving the effectiveness of local tax and retribution collection, productive management of regional assets, and the development of local economic potentials such as tourism, agriculture, and micro, small, and medium enterprises (MSMEs). Therefore, the optimization of PAD becomes an important strategy to enhance regional fiscal capacity, reduce dependence on central government transfers, and support sustainable regional development financing in Lebak Regency.
Digital Technology in Higher Education: Integrating Learning Analytics and Adaptive E-Learning to Improve the Quality of Student Learning Robet H Silaban; Muhammad Irfan Sarif; Perianus Lombu; Aldy Agustian; Larasati Rince Pratita Ritonga
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3081

Abstract

This study aims to analyze the influence of digital technology through the integration of learning analytics and adaptive e-learning on the quality of student learning in higher education. The study used a quantitative approach with an explanatory research type. Data were collected through a Likert-scale questionnaire to 120 students who use digital learning systems. The data analysis technique used multiple linear regression with the help of statistical software. The results of the study showed that learning analytics and adaptive e-learning partially and simultaneously had a positive and significant effect on the quality of student learning, with a significance value of 0.000 < 0.05. The coefficient of determination (R²) value of 0.62 indicates that 62% of the quality of learning is influenced by these two variables. This technology integration has been proven to increase student engagement, effectiveness, and learning outcomes. Thus, the application of learning analytics and adaptive e-learning can be an effective strategy in improving the quality of learning in higher education.
Comparative Analysis of Cooling Systems in Solar Power Plants on System Performance Imelda Martalata Siburian; Zuraidah Tharo; Rahmaniar, Rahmaniar
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3085

Abstract

Temperature increase in solar panels is one of the main factors that reduces energy conversion efficiency in Solar Power Plant systems. To address this issue, fluid-based cooling methods have become an effective alternative in maintaining panel performance stability. This study analyzes the performance comparison of cooling systems using freshwater and saltwater on panel temperature changes and their effects on power output efficiency. The experimental method was conducted by operating solar panels under the same solar radiation conditions, then applying two types of cooling fluids separately to observe differences in temperature reduction and electrical performance improvement. The analysis results show that both cooling methods can significantly reduce panel temperature, but there are differences in thermal characteristics between them. Cooling using saltwater demonstrates better heat transfer capability, but potentially causes corrosion effects in the long term. Meanwhile, freshwater provides quite effective cooling stability with lower damage risk. These findings provide a comprehensive overview regarding the selection of optimal cooling media to enhance PV system efficiency in tropical conditions.
The Response of Cow Urine Fertilizer and Rice Husk Charcoal to the Growth and Production of Sweet Mustard (Brassica Juncea L.) Alfarizi, Alfarizi; Desi Sri Pasca Sari Sembiring; Najla Lubis
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3086

Abstract

This study aims to determine the response of cow urine liquid organic fertilizer (POC) and the use of rice husk charcoal on the growth and production of sweet mustard plants. This research method uses a Factorial Randomized Block Design (RAK) consisting of 2 factors with 48 plots, namely: The first factor is the provision of rice husk charcoal symbolized by "M" which consists of 4 treatment levels (M0: Topsoil, M1: Topsoil + Compost (1: 1) / Plot, M2: Topsoil + Rice Husk Charcoal (1: 1) / Plot, M3: Topsoil + Rice Husk Charcoal + Compost (1: 1: 1) / Plot). The second factor is the provision of Cow Urine POC symbolized by "P" which consists of 4 treatment levels (P0: 0ml/l/plot, P1: 40ml/l/plot, P2: 80ml/l/plot, P3: 120 ml/l/plot). So there are 16 combinations consisting of 3 replications. The parameters observed in this study were plant height, number of leaves, leaf width, corm diameter, dry weight per plot, and wet weight per plot. The results showed that the application of cow urine fertilizer (POC) and the use of rice husk charcoal as a growing medium significantly affected the growth and yield of sweet mustard greens. The topsoil + rice husk charcoal + compost (1:1:1) growing medium produced the best growth and yield across all observed parameters. The application of cow urine fertilizer (POC) was at a dose of 80–120 ml/L.
Automatic Transfer Switch (ATS) for Solar Powered Street Lighting (PJU) (Case Study: Aminggaru Ilaga Airport, Central Papua) Ramadhani Ernanda Daulay; Ahmad Dhani; Beni Satria
INFOKUM Vol. 14 No. 02 (2026): Infokum, March-April 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i02.3087

Abstract

Solar-powered Public Street Lighting (PSL) is an environmentally friendly lighting solution that is widely implemented in remote areas as well as strategic locations. However, the reliability of solar-powered street lighting systems often faces challenges due to dependency on weather conditions and limited battery capacity, which can cause the lights to turn off before the end of the operational period. This study aims to design and evaluate an Automatic Transfer Switch (ATS) system as an automatic power source switching mechanism to improve the reliability of solar-powered street lighting. The proposed system utilizes a Solar Power Generation System (SPGS) as the primary power source and the utility grid (PLN) as a backup source. Testing was conducted using street lighting loads of 10 Watt and 20 Watt lamps, with observed parameters including battery voltage, charging current, load voltage and current, and ATS switching time. The test results show that the solar power system is capable of supplying street lighting for an average duration of approximately ±10 hours and 50 minutes per night. The ATS switches to the utility grid when the battery voltage drops to 11.6 VDC and switches back to the solar power system once the primary source becomes stable again. The switching process is characterized by a brief voltage drop, which is a normal characteristic of ATS operation designed to ensure system safety and prevent electrical disturbances. Based on the experimental results, it can be concluded that the implementation of an Automatic Transfer Switch (ATS) in solar-powered street lighting systems effectively enhances lighting continuity, system reliability, and component protection, making it suitable for application in airport environments and other areas requiring high lighting reliability.
Electrical System Design for a Telecommunication Tower at Site Mdn302 Mabar Gudang, Medan City Wahyu Pranata; Dino Erivianto; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3089

Abstract

This study discusses the analysis of the electrical system at the MDN302 Mabar Gudang Site, which is used to support the operation of telecommunications equipment. The electricity supply at the site comes from a three-phase PLN network with a voltage of 380/220 V, but the installed operational loads use a single-phase system (phase–neutral). The study was conducted through field surveys, electrical parameter measurements, and technical calculation analysis to evaluate the performance of the electrical distribution system. The analysis includes power calculations, system current, distribution cable voltage drop, MCB capacity selection, and evaluation of the grounding and lightning protection systems. Voltage drop calculations were performed using a single-phase system approach with copper conductors and international units (SI). The calculation results show that the voltage drop value on all distribution lines is below the maximum limit of 5% according to the 2011 PUIL standard. The grounding resistance value obtained of 0.5 Ω also indicates that the grounding system has met safety requirements. In addition to technical aspects, this study also presents a Bill of Quantities (BoQ) as part of the electrical system material planning. The selection of MCB capacity and relatively large cable sizes was carried out as a long-term planning strategy to anticipate future load increases. Based on the analysis results, the electrical system at Site MDN302 Mabar Gudang was declared safe, reliable, and feasible for operation.
Impact of Stator Resistance Unbalance on the Efficiency and Torque of Three-Phase Induction Motor Muhamad Vickry Almuhtadi Billah; Siti Anisah; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3090

Abstract

Three-phase induction motors are key components in industrial power systems, but their performance is susceptible to internal disturbances such as stator resistance imbalance caused by aging, overheating, or manufacturing defects. This study aims to systematically analyze the impact of stator resistance imbalance on the efficiency and torque characteristics of squirrel cage rotor induction motors using equivalent circuit-based mathematical modeling. Unlike previous studies that used external resistors, this study modifies the stator resistance parameters directly in the model to represent more realistic internal degradation. Simulations were performed on a 3.73 kW, 400 V, 50 Hz motor with resistance imbalance variations from 0% to 20%. The results show that the imbalance causes uneven current distribution and an increase in stator copper losses of up to 5.94% at 20% conditions, although the percentage of current imbalance remains below 1%. As a result, the efficiency decreases linearly from 92.97% to 92.62%, while the mechanical torque experiences a small decrease from 95.88 Nm to 95.28 Nm. This phenomenon also has the potential to increase torque ripple and uneven heating. This study demonstrates that stator resistance imbalance, even small ones, has a significant impact on motor performance and lifespan, and therefore needs to be considered in predictive maintenance strategies and energy efficiency optimization.
Implementation of Virtual Reality (VR) Technology in the North Sumatra Museum Virtual Tour to Enhance Visitor Interactivity Feri Rinto Bashari; Ruly Dwi Arista; Randi Rian Putra
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3091

Abstract

Museums, as cultural preservation institutions, play a strategic role in conveying historical values to the public; however, they face challenges related to access, distance, and the time spent by visitors. The purpose of this research is to create interactive and easily accessible digital media for teaching and promoting the North Sumatra State Museum thru a 360° Virtual Tour. This research uses the Multimedia Development Life Cycle (MDLC) method, which includes the phases of concept, design, material gathering, creation, testing, and distribution. The 3DVista Virtual Tour application is used to develop virtual tours that utilize 360° panoramic photos, videos, audio, and interactive hotspots to visually and informatively convey information about museum collections. The research results show that the virtual tour created can make the space of the North Sumatra State Museum an immersive and interactive experience. The results of system testing using the Black Box Testing method show that all important system features, including inter-room navigation, information hotspots, panorama control, and multimedia display, can operate well and stably. Therefore, this virtual tour is expected to serve as an alternative way to learn history, support cultural preservation, and increase public interest, especially among young people, in the North Sumatra State Museum.

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