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Three-phase hybrid active power filter: an overview

10.11591/ijece.v15i2.pp1361-1371
Le Quang Binh , Chau Minh Thuyen
Hybrid active power filter (HAPF) is considered an effective solution for filtering harmonics and compensating reactive power in power systems. It is a combination of passive power filters and an active power filter to form many different structures depending on the system voltage and load characteristics. This paper aims to introduce an overall picture of the results of research on three-phase HAPF systems, such as: HAPF models, advantages, disadvantages, and scope of application of each model; methods for determining parameters of passive power filters; structure, response time, resonance, power loss and cost of types of output filters; inverter structure and commonly used pulse width modulation methods in HAPF; control strategies and used controllers are also listed and compared; the DC Link voltage stabilization is also summarized and analyzed. Finally, the existing problems and the development trends of HAPF.
Volume: 15
Issue: 2
Page: 1361-1371
Publish at: 2025-04-01

Modelling and validation of hybrid series active filter for power quality enhancement using OPAL-RT simulator

10.11591/ijece.v15i2.pp1274-1288
Nitisha Shrivastava , Arjun Baliyan
It is a known fact that the quality of power is degrading at a very fast rate. The reason behind this is harmonics in the power supply. The main motive is to reduce the harmonic pollution in the system for various combinations of the load. The method proposed in this paper consists of hybrid series active power filter (HSAPF) which is a combination of an active power filter connected in series and the passive filter in parallel with the load. In order to generate the compensating signals, synchronous reference method has been used and the tuning of the proportional integral (PI) controller is performed with grey wolf optimization technique. It provides the optimized values of controller parameters that are very much necessary to improve not only the transient but also the steady state characteristics of the system. For comparison purposes the tuning of PI controller is also done using the well- known particle swarm optimization technique. A comparative simulation analysis is done in MATLAB as well as the results are verified by using OPAL-RT 4510 real time simulator which proves that the suggested topology gives better results in terms of total harmonic distortion (THD) reduction.
Volume: 15
Issue: 2
Page: 1274-1288
Publish at: 2025-04-01

Recommender system for dengue prevention using machine learning

10.11591/ijai.v14.i2.pp1106-1115
Siriwan Kajornkasirat , Benjawan Hnusuwan , Supattra Puttinaovarat , Kritsada Puangsuwan , Nawapon Kaewsuwan
The study aimed to develop a recommender system for dengue prevention using environmental factors and mosquito larvae data. Data were collected from 100 households in Surat Thani, Thailand using mosquito larval survey in January 2020. Data mining techniques: frequent pattern growth (FP-Growth) and Apriori algorithms were used to find association rules and to compare accuracies for selecting a suitable model. The recommender system was designed as a web application. FP-Growth is more suitable for these data than Apriori algorithm. The factors associated with dengue infection, including community area, densely populated area, and agricultural area. Most areas where mosquito larvae are found are community areas and agricultural areas. Aedes larvae were found most in water containers with dark colors and without a lid. Aedes larvae were also found in small water jars, large water jars, cement tanks, and plastic tanks. The recommender system should be useful to dengue vector prevention and to health service communities, in planning and operational activities.
Volume: 14
Issue: 2
Page: 1106-1115
Publish at: 2025-04-01

Improving water quality parameter prediction with multi-level linear regression model and hybrid feature selection

10.11591/ijece.v15i2.pp2381-2391
Aleefia Khurshid , Samruddhi Korke , Yudhir Kothari , Shruti Alone , Khushali Bais
Predicting and modeling the quality of water is essential to guarantee that the water is safe to drink. The chlorine content in water needs to be monitored in real-time to provide a consistent supply of drinkable water. Additionally, potassium and chlorine have a major impact on how appealing the water is, as they are important components that influence taste and odor. Therefore, to evaluate the levels of chlorine and potassium, this work presents a multivariable linear regression approach backed by a hybrid feature extraction method. To bridge the gap between the filter and wrapper approaches, a hybrid approach is used to remove unnecessary information and reduce processing time and complexity. Here the quantitative parameters, in conjunction with categorical parameters, are instrumental in enabling accurate prediction of two water quality parameters. The two developed multi-level regression (MLR) models for the prediction of potassium and chloride are useful when factors affecting water parameters fluctuate at the site level as well as over larger spatial or temporal scales giving consumers a visual representation of how each parameter influences prediction. The converged model outperforms in comparison with other machine learning algorithms with an MAE of 7.42e-15 for potassium and 3.72e-14 for chloride.
Volume: 15
Issue: 2
Page: 2381-2391
Publish at: 2025-04-01

Design and implementation of an internet of things enabled stress level detection system using fuzzy logic method for enhanced accuracy and real-time monitoring

10.11591/ijece.v15i2.pp2499-2512
Nurhayati Nurhayati , Nur Hidayah , Muh. Ahyar , Asriyadi Asriyadi , Yuniarti Yuniarti , Muhira Dzar Faraby , Mustika Mustika , Asmah Akhriana , Mukhlisin Mukhlisin
Stress can affect individuals of all ages, from the young to the elderly, leading to a compromised immune system and increased susceptibility to illness. This study addresses this issue by developing an internet of things (IoT) based stress level detection system utilizing fuzzy logic methods. The device measures multiple physiological parameters and processes the data using an ESP32 microcontroller. This allows individuals to monitor and understand their stress levels efficiently and automatically through a liquid crystal display (LCD) display and Android devices. The system integrates various sensors to capture vital signs such as heart rate (HR), respiration rate, and body temperature. These readings are then analyzed using its algorithms to determine the stress level, which is displayed on both the onboard LCD and the connected Android device via an IoT interface. This real-time feedback mechanism empowers users to take proactive measures in stress management. Testing and validation of the device were conducted by comparing its readings with the depression anxiety stress scales (DASS-42) test results. The comparison showed an 80% correlation, demonstrating the device’s accuracy and reliability in detecting stress levels. This innovative approach leverages the advantages of IoT and fuzzy logic to provide a practical and effective solution for stress monitoring and management.
Volume: 15
Issue: 2
Page: 2499-2512
Publish at: 2025-04-01

Tilted fiber Bragg grating based optical sensor for simultaneous measurement of vital signs: a novel approach

10.11591/ijece.v15i2.pp1434-1445
Ramya Arumugam , Ramamoorthy Kumar , Samiappan Dhanalakshmi
Vital signal monitoring acts as a highly significant diagnostic method. Continuous monitoring of vital signs like temperature, heart rate, and blood pressure aids in easy and fast disease diagnosis. Existing methods that enable continuous monitoring, such as smart watches, are not accurate enough to be used as a benchmark for diagnosing diseases. In this paper, we propose simultaneous temperature and heart rate measurement using tilted fiber Bragg grating (TFBG) which enables concurrent measurement of measurands due to its intrinsic optical property. Temperature and heart rate were considered for measurement. The proposed TFBG-based optical sensor has a sensitivity of 11.81 pm/°C and 1.73 pm/µε towards variation in temperature and strain, respectively. The sensitivity was determined by a shift in the wavelength of core mode resonance for temperature and a differential change in the wavelength of cladding mode resonance for heart rate. The average response time of the proposed TFBG sensor was found to be 3 seconds. Accuracy of 99.68% and 98.42% were achieved in temperature and heart rate measurements by the proposed TFBG sensor. The acceptability of the proposed TFBG sensor was analyzed using the Bland- Altman plot.
Volume: 15
Issue: 2
Page: 1434-1445
Publish at: 2025-04-01

Enhancing curriculum development: a comprehensive framework for undergraduate competencies

10.11591/ijere.v14i2.30029
Ma Teresa Silos Alvarez , Sheila Y. Guinat
In the context of significant changes in higher education and the job market, there has been extensive discussion on what qualifies graduate competency and what shapes graduates’ labor market outcomes. Each university’s vision is to produce highly competitive and educated graduates with high competence and contribute to the country’s development. Graduate employability is a key issue for higher education. Ensuring their competency is vital in forming an educated graduate the industry is looking for. Their competency is honed based on the activities and curriculum of the program as embedded in the circular memorandum order (CMO) of each program. A descriptive research design was used and a questionnaire on structured institutionalized tracer instrument and CMO 17 s.2017 was adopted. Uses statistical treatment such as mean, frequency, percentages and t-tests. This study focuses to assess and evaluate the competency of our graduates in response to the needs of the industry and for curriculum enhancement. The results reveal that the bachelor of science in business administration (BSBA) graduate’s competency based on all the identified parameters was deemed "very effective" and useful in their respective workplace. Though the results highlighted research and extension as "very effective", their importance to employment shows that they are highly significant corresponding to the present trend. Despite all the training and exposure, the college provides them, still need improvement and commends to enhance the curriculum, improve instruction delivery, and upgrade graduate competencies.
Volume: 14
Issue: 2
Page: 1518-1527
Publish at: 2025-04-01

Modeling and enhancing inverse kinematics algorithms for real-time target tracking in inertial stabilization systems

10.11591/ijece.v15i2.pp1544-1556
Abderahman Kriouile , Soufiane Hamida , Abdoul Latif Abdou Moussa
This study develops a two-axis gimbal system designed to maintain a target within its field of view by compensating for motion of either the target or the platform. The focus is on inertial stabilization platforms (ISPs), where accurate, real-time tracking is essential for applications such as surveillance, navigation, and scientific observation. The research prioritizes the design and optimization of inverse kinematics algorithms to enhance system performance. A detailed analysis of mathematical models underpins the development, addressing challenges in real-time processing with advanced optimization techniques to minimize latency and maximize accuracy. The proposed algorithms achieve a mean tracking error of 0.002 m and a mean convergence time of 2.12 seconds, surpassing traditional methods in precision and efficiency. Performance is evaluated within a simulation framework using Simscape Multibody, testing the algorithms under various conditions. Validation extends to real-world scenarios to ensure robustness and practical applicability. The results demonstrate significant improvements in tracking accuracy and responsiveness, offering a reliable solution for dynamic environments. This work paves the way for more efficient gimbal systems, contributing to advancements in technologies requiring stable and precise tracking in dynamic and challenging settings.
Volume: 15
Issue: 2
Page: 1544-1556
Publish at: 2025-04-01

Next-generation offloading using hybrid deep learning network for adaptive mobile edge computing

10.11591/ijece.v15i2.pp1924-1932
P. Anusha , V. Mary Amala Bai
Deploying mobile application tasks that require a lot of computing and are time-sensitive to distant cloud-based data centers has become a popular method of working around the limitations of mobile devices (MDs). Deep reinforcement learning (DRL) techniques for offloading in mobile edge computing (MEC) environments struggle to adapt to new situations due to low sample efficiency for each new context. To address these issues, a novel computational offloading in mobile edge computing (COOL-MEC) algorithm has been proposed that combines the benefits of attention modules and bi-directional long short-term memory. This algorithm improves server resource utilization by lowering the cost of assimilating processing latency, processing energy consumption, and task throughput of latency-sensitive tasks. The experiment's findings show that, when used as intended, the recommended COOL-MEC algorithm minimizes energy consumption. When compared to the current deep convolutional attention reinforcement learning with adaptive reward policy (DCARL-ARP) and DRL techniques, the energy consumption of the proposed COOL-MEC is decreased by 0.06% and 0.08%, respectively. The average time per channel utilized for the execution of the proposed COOL-MEC also decreased by 0.051% and 0.054% when compared with existing DCARL-ARP and DRL methods respectively.
Volume: 15
Issue: 2
Page: 1924-1932
Publish at: 2025-04-01

Boosting industrial internet of things intrusion detection: leveraging machine learning and feature selection techniques

10.11591/ijai.v14.i2.pp1232-1241
Lahcen Idouglid , Said Tkatek , Khalid Elfayq
The rapid integration of industrial internet of things (IIoT) technologies into Industry 4.0 has revolutionized industrial efficiency and automation, but it has also exposed critical vulnerabilities to cyber threats. This paper delves into a comprehensive evaluation of machine learning (ML) classifiers for detecting anomalies in IIoT environments. By strategically applying feature selection techniques, we demonstrate significant enhancements in both the accuracy and efficiency of these classifiers. Our findings reveal that feature selection not only boosts detection rates but also minimizes computational demands, making it a cornerstone for developing resilient intrusion detection systems (IDS) tailored for Industry 4.0. The insights garnered from this study pave the way for deploying more robust security frameworks, safeguarding the integrity and reliability of IIoT infrastructures in modern industrial settings.
Volume: 14
Issue: 2
Page: 1232-1241
Publish at: 2025-04-01

Srvycite: a hybrid scientific article recommendation system

10.11591/ijict.v14i1.pp216-228
Sivasankari R , J Dhilipan
A recommendation system is becoming part of every work done today to reduce the effort of work done by the users in searching for items in need by recommending new items that may be useful. This theme has also been used in research article recommendation systems for recommending articles of interest to researchers from a bulk of digital research documents spread across different databases on the internet. To ease the task of this article recommendation process, we have proposed a novel approach, Srvycite, by utilizing the survey article citation network along with the original research article network. The purpose of utilizing the survey article citation network is to detect the most influential articles that are considered to be important by other researchers in the same field. The Srvycite approach utilizes the text and meta features of articles to recommend papers. To preprocess the text features utilized, we have employed Word2Vec and bidirectional encoder representations from transformers (BERT) for vectorization. Then citation graph and survey citation graphs are generated to find the most influential nodes. The weighted text similarity score is finally computed by combining the cited by values and the text similarity score from the citation and survey citation graph to list articles as recommendations for the user. This system is proven to increase the accuracy of the article recommendation by 3.8 and 2.1 in the case of the precision and recall measures for performance evaluation.
Volume: 14
Issue: 1
Page: 216-228
Publish at: 2025-04-01

A comparative analysis of transfer learning models on suicide and non-suicide textual data

10.12928/telkomnika.v23i2.25654
Merinda; Universitas Muhammadiyah Malang Lestandy , Abdurrahim; Islamic University of Indonesia Abdurrahim , Amrul; Universitas Muhammadiyah Malang Faruq , Muhammad; Universitas Muhammadiyah Malang Irfan
The rise of social media has allowed individuals to express themselves freely, increasing the visibility of mental health concerns, including suicidal tendencies. This issue is particularly significant, as suicide is one of the leading causes of death globally. The objective of this study is to develop a model capable of accurately detecting suicide-related textual data using advanced natural language processing techniques. To achieve this, we applied transfer learning models, including bidirectional encoder representations from transformers (BERT), robustly optimized bidirectional encoder representations from transformers (RoBERT), a lite BERT (ALBERT), and decoding-enhanced BERT with disentangled attention (DeBERTa). the dataset used in this research includes 232,074 posts from Reddit, categorized into suicide and non-suicide labels. Preprocessing steps such as removing HTML tags, special characters, and punctuation were applied, followed by stopword removal and lemmatization. The models were trained and evaluated using accuracy, precision, recall, and F1-score metrics. Among the models tested, DeBERTa demonstrated superior performance, achieving an accuracy of 98.70% and an F1-score of 98.70%. These findings suggest that transfer learning models, particularly DeBERTa, are effective in identifying suicidal ideation in textual data.
Volume: 23
Issue: 2
Page: 426-434
Publish at: 2025-04-01

Hybrid horned lizard optimization algorithm-aquila optimizer for DC motor

10.11591/ijai.v14.i2.pp1673-1682
Widi Aribowo , Laith Abualigah , Diego Oliva , Toufik Mzili , Aliyu Sabo
This research presents a modification of the horned lizard optimization (HLO) algorithm to optimize proportional integral derivative (PID) parameters in direct current (DC) motor control. This hybrid method is called horned lizard optimization algorithm-aquila optimizer (HLAO). The HLO algorithm models various escape tactics, including blood spraying, skin lightening or darkening, crypsis, and cellular defense systems, using mathematical techniques. HLO enhancement by modifying additional functions of aquila optimizer improves HLO performance. This research validates the performance of HLAO using performance tests on the CEC2017 benchmark function and DC motors. From the CEC2017 benchmark function simulation, it is known that HLAO's performance has promising capabilities. By simulating using 3 types of benchmark functions, HLOA has the best value. Tests on DC motors showed that the HLAO-PID method had the best integrated of time-weighted squared error (ITSE) value. The ITSE value of HLOA is 89.25 and 5.7143% better than PID and HLO-PID.
Volume: 14
Issue: 2
Page: 1673-1682
Publish at: 2025-04-01

Homomorphic encryption, privacy-preserving feature extraction, and decentralized architecture for enhancing privacy in voice authentication

10.11591/ijece.v15i2.pp2150-2160
Kathiresh Murugesan , Lavanya Subbarayalu Ramamurthy , Boopathi Palanisamy , Yamini Chandrasekar , Kavitha Masagoundanpudhur Shanmugam , Balluru Thammaiahshetty Adishankar Nithya , Velumani Thiyagaraja , Ramaraj Muniappan
This paper introduces a novel framework designed to bolster privacy protections within automated voice authentication systems, addressing mounting concerns as voice-based authentication grows in prominence. The widespread adoption of these systems has underscored apprehensions regarding the storage and processing of sensitive voice biometric data without adequate safeguards. To mitigate these risks, a modified framework is proposed, aiming to enhance privacy without compromising authentication accuracy and efficiency. Three key techniques are implemented to address these challenges. Firstly, advanced encryption methods are employed for secure voice data storage and transmission, through the homomorphic encryption to enable authentication processing on encrypted data. Secondly, a privacy-preserving feature extraction method is introduced, transforming raw voice inputs into irreversible representations to shield original biometric information. Additionally, the framework incorporates differential privacy mechanisms, adding controlled noise to aggregated voice data to prevent individual identification within large datasets. A user-centric consent and control model is proposed, empowering individuals to manage their voice profiles and authentication settings. Experimental findings demonstrate that the framework achieves enhanced authentication accuracy while markedly reducing privacy risks compared to conventional systems. This contribution addresses the ongoing challenge of balancing security and privacy in biometric authentication technologies.
Volume: 15
Issue: 2
Page: 2150-2160
Publish at: 2025-04-01

Dual band antenna design for 4G/5G application and prediction of gain using machine learning approaches

10.12928/telkomnika.v23i2.26233
Narinderjit; INTI International University Singh Sawaran Singh , Md. Ashraful; Daffodil International University Haque , Redwan; Daffodil International University A. Ananta , Md. Sharif; Daffodil International University Ahammed , Md. Abdul; Friedrich Schiller University Jena Kader Jilani , Liton; Pabna University of Science and Technology Chandra Paul , Rajermani; INTI International University Thinakaran , Malathy; INTI International University Batumalay , JosephNg; INTI International University Poh Soon , Deshinta; INTI International University Arrova Dewi
In this research, we disclose our findings from exploring a machine learning (ML) approach to enhancing the antenna’s performance in Industrial and Innovation contexts, particularly for4G and 5G (n77, n78) contexts. Methods for evaluating antenna performance utilizing simulation, the resistor, inductor, and capacitor (RLC) equivalent circuit model, and ML are discussed. Gain is a maximum of 6.56 dB and efficiency is about 97% for this antenna. The predicted antenna gain is calculated using an alternative supervised regression ML technique. Multiple measures, including as the variance score, R-square (R2), mean square error (MSE), and mean absolute error (MAE), can be used to assess an ML model’s performance. The linear regression (LR) model predicts profit with the fewest errors and highest accuracy of the five ML models. Finally, computer simulation technology (CST) and advanced design system (ADS) modeling findings, along with ML results, show that the proposed antenna is a promising option for 4G and 5G applications.
Volume: 23
Issue: 2
Page: 543-552
Publish at: 2025-04-01
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