Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Filter Icon

Filters article

Years

FAQ Arrow
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

30,938 Article Results

Comparative performance analysis of MPPT algorithms for wind power generation: P&O, INC, and TSR methods

10.11591/ijape.v15.i2.pp894-904
Muhammad Aulia Desky , Yulianta Siregar , Maksum Pinem
Wind energy has great potential, especially in areas with high wind speeds such as Southeast Aceh. However, wind speed fluctuations reduce turbine efficiency, necessitating maximum power point tracking (MPPT) for optimization. This study compared three MPPT methods perturb and observe (P&O), incremental conductance (INC), and tip speed ratio (TSR) to identify the most effective technique. Using MATLAB Simulink, simulations were conducted with wind speed data from Southeast Aceh and a DC-DC boost converter. Results showed the P&O method performed best, producing 847.83 W at 10 m/s, compared to 702.40 W for INC and 324.35 W for TSR. P&O also achieved the highest current output, reaching 16.45 A, while INC and TSR produced 13.66 A and 6.34 A, respectively. At lower wind speeds, P&O continued to outperform the other methods. This study concludes that the P&O method is the most effective method to improve the efficiency of wind turbines in Southeast Aceh, while INC shows moderate performance and TSR is the least effective method due to fluctuating wind speeds in a short time, so that TSR cannot maintain its maximum value. Therefore, P&O is recommended as the optimal MPPT technique for wind power plants in this region.
Volume: 15
Issue: 2
Page: 894-904
Publish at: 2026-06-01

A hybrid deep learning approach for BoT-IoT intrusion detection

10.11591/ijai.v15.i3.pp2192-2200
Khalid Altarawneh , Ghayth AlMahadin , Ibrahim Altarawni
Internet of things (IoT) devices enhance quality of life and industrial operations but pose significant security risks, necessitating intelligent intrusion detection systems (IDS) to combat evolving cyber threats. This paper proposes a novel IDS framework integrating bio-inspired heuristic feature selection, a generative adversarial network (GAN)-based data augmentation, and an ensemble classifier combining ResNet, AlexNet, and MobileNet. The methodology, tested on the botnet (BoT)-IoT dataset, follows four stages: preprocessing, feature augmentation, feature selection, and ensemble classification. Evaluated on benchmarks including CIC-IDS-2018, NSL-KDD, and UNSW-NB15, the model achieved accuracies of 98.2%, 99.1%, 97.6%, and 98.4%, respectively, with consistently high precision, recall, and F1-scores, demonstrating robust detection of diverse cyberattacks. Beyond accuracy, the framework optimizes processing time for large-scale IoT data, addressing scalability challenges in real-time threat mitigation. By synergizing feature optimization, synthetic data generation, and deep learning architectures, the solution enhances detection rates while minimizing computational overhead. Comparative analysis highlights its superior performance over existing methods, positioning it as a vital tool for securing IoT ecosystems against unauthorized access and malicious activities. The results underscore its potential to fortify IoT network security, balancing efficiency, adaptability, and computational feasibility for practical deployment in resource-constrained environments.
Volume: 15
Issue: 3
Page: 2192-2200
Publish at: 2026-06-01

Enhancing fake news detection: a hybrid BERT-XGBoost model for improved performance and interpretability

10.11591/ijai.v15.i3.pp2385-2397
Nishant Vasantkumar Hegde , Suneesh Bare , Namruth Reddy , Rajat Gondkar Aravinda , Minal Moharir , Aamir Ibrahim
The widespread spread of fake news poses a serious threat to the integrity of information. The dominant approach to detection involves end-to-end fine-tuning of large transformer models like bidirectional encoder representations from transformers (BERT), which, despite achieving high accuracy, often function as opaque “black boxes” with limited interpretability. This paper proposes and validates a hybrid, decoupled architecture that proves to be a more practical and powerful alternative. We first fine-tune a DistilBERT model on the full WELFake dataset of 71,537 articles after cleaning to create domain-specific embeddings. These high-dimensional vectors are then used as input features to train a robust extreme gradient boosting (XGBoost) classifier. The results demonstrate that the hybrid model achieves a state-of-the-art accuracy of 99.76%, slightly surpassing the already high performance of a standard end-to-end fine-tuned model. Crucially, this approach provides this top-tier performance while offering significant advantages in model interpretability through feature importance analysis. This work establishes that a decoupled architecture is not just a viable alternative but a superior practical strategy for combating misinformation, successfully balancing state-of-the-art accuracy with essential model transparency.
Volume: 15
Issue: 3
Page: 2385-2397
Publish at: 2026-06-01

Dynamic optimization using long short-term memory and genetic algorithms for predicting marine data

10.11591/ijai.v15.i3.pp2826-2837
Mukhlis Mukhlis , Indra Jaya , Sri Nurdiati , Karlisa Priandana , Irman Hermadi
This study aims to develop an accurate and efficient ocean data prediction model to tackle the challenges posed by climate change and complex oceanographic dynamics. The main goal is to use long short-term memory (LSTM) networks along with genetic algorithms (GA) to predict four key ocean factors at once: sea surface temperature (SST), sea surface height (SSH), sea surface salinity (SSS), and chlorophyll-a (Chl-a). An experimental quantitative approach is employed, utilizing satellite data from the Banda Sea region. This approach involves time series modeling using LSTM, which is optimized by GA for hyperparameters such as the number of neurons and batch size. The results show that the combined LSTM-GA model greatly improves prediction accuracy and successfully identifies seasonal trends and irregular changes in all variables, even when there is a lot of noise. Tests reveal that the optimal configuration varies for each variable, and the GA optimization process can expedite model convergence by as little as 10 epochs. These findings underscore the effectiveness of integrating evolutionary techniques in training deep learning (DL) models for ocean data. The implications of this research include potential applications in adaptive ocean monitoring systems, early warning initiatives, and data-driven planning in marine resource management.
Volume: 15
Issue: 3
Page: 2826-2837
Publish at: 2026-06-01

Design of beefsteak tomato harvesting robot system in greenhouse

10.11591/ijra.v15i2.pp353-364
Thien An Dinh , So Nam Phung , Tri Cong Phung
One challenge for tomato harvesting robots is that some of the tomato stems were not detectable because they were hidden behind the leaves or other obstacles. The primary objective of this research is to design, simulate, and experiment with a tomato harvesting robot and propose an improved detection algorithm to overcome the above problem. The suggested detection algorithm is designed to first detect the tomato fruit itself, and if the stem is not visible, the system will automatically adjust the camera's viewing angle to provide a better perspective and uncover the hidden stem. Simulation and experimental tests were carried out in a real tomato greenhouse to evaluate the cutting and holding mechanism, as well as the camera-based detection algorithm. These experimental results confirmed the effectiveness of the gripper and detection system and revealed several challenges in the harvesting algorithm. By integrating advanced algorithms for tomato detection and harvesting, this robot will reduce damage to the tomatoes, ensuring higher quality and yield.
Volume: 15
Issue: 2
Page: 353-364
Publish at: 2026-06-01

Academic engagement and artificial intelligence platform behaviors in grammar achievement

10.11591/ijere.v15i3.37822
Wang Yadan , Soon Singh Bikar Singh , Connie Shin , Zheng Juncai , Zhang Qianqian
This study is among the first to use archival institutional records to test the incremental validity of artificial intelligence platform behaviors (AI_index) in predicting grammar achievement (GA). Using data from 405 non–English-major freshmen enrolled in a compulsory grammar course at a private Chinese university, we examined whether AI_index predicts end-of-semester grammar exam performance beyond course-embedded behavioral academic engagement (AE_index). AE_index was derived from grade-book quizzes and class interactions, whereas AI_index was constructed from institutional platform logs capturing coursework completion and assigned video viewing. Indices were scaled to a 0–100 range, and GA was measured by a unified final exam. Descriptive statistics, correlations, and hierarchical regression analyses showed that AE_index was a small but significant predictor of exam performance, whereas AI_index was weak and non-significant and added no incremental predictive value beyond AE_index. Together, the two indices explained a modest proportion of variance in GA. These findings suggest that completion-based platform metrics are unlikely to reflect effortful learning unless platform tasks align with summative assessment demands (e.g., translation and proofreading). The findings caution against using completion-based AI metrics as high-stakes indicators without demonstrated task–assessment alignment.
Volume: 15
Issue: 3
Page: 2690-2699
Publish at: 2026-06-01

ValveHealthNet: a light deep learning model for accurate valvular heart disorder detection

10.11591/ijai.v15.i3.pp2643-2654
Ausilah Alfraihat , Wafaa Al-Sharu , Ali Mohammad Alqudah
Valvular heart disease (VHD) is a significant global health issue, contributing to increased morbidity and mortality rates, particularly in aging populations. Current diagnostic methods, such as echocardiography and manual auscultation, face limitations in accessibility and accuracy, particularly in resource-constrained environments. This study introduces ValveHealthNet, a lightweight deep learning model designed to classify various VHDs using heart sound recordings. Leveraging a dataset of over 10,000 heart sounds, minimal preprocessing was applied by converting the audio signals into power spectra before feeding them into a convolutional neural network (CNN) combined with a bidirectional long short-term memory (BiLSTM) network. This model achieved impressive results, with an accuracy of 98% in training and testing and 98.4% through 10-fold cross-validation. This highly efficient model can be used in embedded systems, providing a cost-effective, AI-driven solution for early detection of VHD in settings where advanced diagnostic tools may be unavailable.
Volume: 15
Issue: 3
Page: 2643-2654
Publish at: 2026-06-01

Simulation and comparison of trapezoidal triangle carrier signal with different reference signal for 1500 V DC bus 3 level ANPC inverter

10.11591/ijape.v15.i2.pp492-504
Miteshkumar N. Priyadarshi , Sandeep Chakravorty
High voltage application to generate staircase output to reduce the total harmonic distortion (THD), the multilevel topologies gaining more and more attractions, and new topologies have been developed. This paper discuss about the advantage of active neutral point clamp (ANPC) topology over neutral point clamp (NPC), flying capacitor neutral point clamp (FCNPC) and T-type neutral point clamp (TNPC) topologies are discussed when it used for DC bus voltage of 1500 V. For ANPC topology several PWM techniques are used to calculate the total harmonic distortion, including phase opposition pulse width modulation (PODPWM), phase disposition pulse width modulation (PDPWM), and alternative phase opposition disposition pulse width modulation (APODPWM), phase shifted pulse width modulation (PSPWM), bus clamping PWM (BCPWM), trapezoidal triangle PWM (TRPWM), third harmonic injected PWM (THIPWM), and sinusoidal PWM (SPWM), three-phase sinusoidal signals with a 13th harmonic signal (THISDPWM). Also, the parasitic inductance model of ANPC topology is discussed. To use 1200 V switching device the most efficient PWM technique for a 1500 V DC bus, 3 phase 3 level ANPC inverter is determined by comparing the RMS value of phase voltage, THD, and peak voltage across the switching device. PSIM has been used to simulate a 3 level inverter using various PWM techniques.
Volume: 15
Issue: 2
Page: 492-504
Publish at: 2026-06-01

Radar-based gesture recognition simulation for unmanned aerial vehicles command interpretation

10.11591/ijece.v16i3.pp1227-1235
Denny Dermawan , Freddy Kurniawan , Yenni Astuti , Paulus Setiawan , Lasmadi Lasmadi , Uyuunul Mauidzoh , Bambang Sudibya
Radar-based gesture recognition has emerged as a robust alternative to vision-based systems, particularly in environments where lighting and privacy pose challenges. This study presents a simulation approach for recognizing hand gestures to control unmanned aerial vehicles (UAVs) using radar signals. Five discrete gestures, i.e., TakeOff, Land, MoveForward, TurnLeft, and stop, were defined and modeled in MATLAB to generate synthetic radar signals. From each sample, four time-frequency domain features were extracted: duration, maximum amplitude, dominant frequency, and root mean square (RMS). A dataset of 500 samples (100 per class) was classified using three supervised learning models: support vector machine (SVM), k-nearest neighbors (k-NN), and decision tree. The k-NN classifier achieved the highest accuracy of 96%, demonstrating the feasibility of lightweight classifiers for gesture recognition using low-complexity features. These results highlight the potential of radar-based interfaces to replace traditional remote controls in UAV operation. The proposed simulation framework contributes to the development of intuitive, non-contact human-machine interaction systems.
Volume: 16
Issue: 3
Page: 1227-1235
Publish at: 2026-06-01

Association of body mass index and age as risk factors for post-anesthetic shivering in mastectomy patients under general anesthesia in East Java, Indonesia

10.11591/ijphs.v15i2.26908
Reko Priyonggo , Muhammad Rodli , Suryanto Suryanto , Annes Rindy Permana , Widigdo Rekso Negoro , Sindu Sintara
Intraoperative hypothermia and post-anesthetic shivering (PAS) remain frequent complications in oncologic surgery under general anesthesia, yet evidence integrating intraoperative temperature changes with PAS severity in mastectomy patients is limited. This study aimed to evaluate intraoperative temperature profiles, determine the incidence and severity of PAS, and analyze the association between age, body mass index (BMI), and PAS among radical mastectomy patients. A cross-sectional observational study was conducted involving 36 women undergoing radical mastectomy with endotracheal general anesthesia. Core temperature was measured at 30 and 60 minutes intraoperatively, and PAS was assessed using the bedside shivering assessment scale (BSAS) upon admission to the recovery room. Moderate intraoperative hypothermia was observed in 72.2% of patients at 60 minutes, while PAS occurred in 30.6% of cases. Significant associations were identified between PAS and BMI (p = 0.001), as well as age (p = 0.026). Moderate-to-severe shivering (BSAS scores 2-3) was more frequently observed among underweight and elderly patients. This study provides novel evidence by linking intraoperative hypothermia patterns with PAS severity using BSAS in mastectomy patients. Clinically, the findings support structured perioperative temperature monitoring and the implementation of risk-based warming protocols, particularly for patients with low BMI and advanced age.
Volume: 15
Issue: 2
Page: 511-517
Publish at: 2026-06-01

Effects of sparse datasets on time interval-aware self-attention sequential recommendation models

10.11591/ijai.v15.i3.pp2761-2773
Weishan Ooi , Lee-Yeng Ong , Meng-Chew Leow
Recommendation models serve as crucial filters in managing information, yet they face a few crucial challenges, such as capturing user-item interaction behaviors in sparse datasets. Data sparsity refers to an issue where there is a lack of interactions or missing values in the recommendation dataset. A sparse dataset with a massive number of missing values and interactions leads to more dynamic user behaviors, which suffers a poor recommendation quality. The self-attention mechanism from Transformer can alleviate the effects of data sparsity in datasets by assigning weights to items of interaction behaviors. This allows the model to capture the user dependencies in complex user behavior, which is beneficial for sparse datasets with patterns that are not immediately apparent. This approach has shown its capability to handle large and sparse datasets, as seen in time interval-aware self-attention sequential recommendation model (TiSASRec). It utilized the self-attention mechanism, considering the timestamp and absolute positions of items to estimate the higher attention weights to show the importance of recent items. Thus, this study aims to investigate the effects of sparse datasets by comparing the performance of TiSASRec model with self-attention based sequential recommendation model (SASRec), which excludes time interval-awareness.
Volume: 15
Issue: 3
Page: 2761-2773
Publish at: 2026-06-01

Double direction optimization: a new metaheuristic that performs exploitation and exploration simultaneously

10.11591/ijai.v15.i3.pp2874-2884
Purba Daru Kusuma , Helmy Widyantara
This research constructs a novel method called double direction optimization (DDO). DDO is constructed based on swarm intelligence (SI) approach and it does not use any metaphor. As its name suggests, it employs a novel algorithm by performing exploitation and exploration simultaneously which is transformed into two sequential searches. In the 1st search, the motion toward the highest quality agent is combined with the motion toward a randomly taken higher quality agent. In the 2nd search, the motion toward the finest entity is combined with the motion relative to a randomly taken agent. In this work, the efficacy of the DDO is assessed using three use cases: 23 functions, four engineering problems, and an economic emission dispatch (EED) problem. In this assessment, there are five metaheuristics that become the benchmark: crayfish optimization algorithm (COA), hiking optimization (HO), osprey optimization algorithm (OOA), carpet weaver optimization (CWO), and dollmaker optimization algorithm (DOA). The result indicates the supremacy of DDO in high dimension functions and competitiveness of DDO in fixed dimension multimodal functions, four engineering problems, and the EED problem.
Volume: 15
Issue: 3
Page: 2874-2884
Publish at: 2026-06-01

Optimized classification of student performance outcomes using LEE feature selection in the context of educational data mining

10.11591/ijai.v15.i3.pp2459-2470
Kishore Kumar Kamarajugadda , Movva Pavani , Rani Vanathi Gurusamy , Nagarajan Karthikeyan , Pavan Kumar Nidumolu , Desidi Narsimha Reddy , Muniappan Ramaraj , Rajasekaran Nithya
Student speculative victory is a vital area that needs to be predicted to improve the quality of education and aid the institutional decision making. This research work has to planned to use learning based enhanced evaluation (LEE) feature selection method with real world educational datasets for optimized data mining approach to predict student performance. High dimensionality and irrelevant features are common problems with enhanced models, affecting classification accuracy and efficiency. LEE feature algorithm is used to extract important features, that enhance the performance of the model, reduce the calculation quantity of the model. The methodology consists of pre-processing of the dataset, feature selection using LEE algorithm, and testing four classifiers namely support vector machine (SVM), k-nearest neighbor (KNN), adaptive learning, and naïve Bayes. The incorporation of LEE improves the model’s ability by reducing noise and highlighting the influential features. Experimental results show that optimized techniques are better in terms of accuracy and robustness than others. The models are evaluated based on important performance metrics such as accuracy, precision, recall, F1-score, and training time. The enhanced approach will help to add to the literature of the field of educational data mining (EDM), providing a practical and effective way of predicting student performance in real academic settings.
Volume: 15
Issue: 3
Page: 2459-2470
Publish at: 2026-06-01

Utilizing phase congruency technique in reception performance optimization of UWB signals in multipath fading channels

10.11591/ijece.v16i3.pp1272-1285
Nadir Mohamed Abdelaziz
Ultra-wideband (UWB) technology enables high-data-rate communications and centimeter-accurate indoor localization but suffers severe degradation in multipath fading channels due to dense multipath components, narrowband interference (NBI), and low signal-to-noise ratios (SNR). Conventional energy-based detection methods, including Rake receivers, fail under these conditions due to amplitude sensitivity. This paper introduces a phase congruency (PC)-based selective Rake (S-Rake) receiver that exploits phase alignment across frequencies rather than signal magnitude for robust feature detection. The proposed method computes PC metrics via Hilbert transforms and sub-band decomposition to identify phase-aligned multipath components, guiding S-Rake finger selection (4, 8, and 128 fingers) and time-of-arrival (TOA) estimation. Simulations using 6th-derivative Gaussian pulses over IEEE 802.15.3a CM4 channels (NLOS, 4-10 m) with AWGN and IEEE 802.11a interference (SIR=-30 dB to 0 dB) demonstrate that PC-based S-Rake achieves 4 dB SNR gain at BER=10⁻⁴ over conventional Rake under high interference. DS-UWB with PC outperforms TH-UWB by 3× lower BER at SIR=-30 dB. Increasing Rake fingers from 4 to 128 reduces BER by >40% and improves TOA accuracy by 62% (RMSE: 1.8 ns → 0.68 ns). PC maintains BER=10⁻³ at SIR=0 dB where conventional methods fail. Results establish PC as a transformative paradigm for interference-resilient UWB applications including IoT localization and 5G-coexistent communications.
Volume: 16
Issue: 3
Page: 1272-1285
Publish at: 2026-06-01

Study on the design and comparison of permanent magnet synchronous motors for electric vehicle applications

10.11591/ijece.v16i3.pp1107-1117
Pham Ngoc Sam , Tran Duc Chuyen
In this research, the authors present a study analysis and compares two types of embedded internal permanent magnet synchronous motors (IPMSM) with U-type and V-type magnet configurations using finite element method (FEM) modeling to apply these motors to the currently popular electric vehicle industry. Parameters such as magnetic flux density, torque, cogging torque, back electromotive force (back-EMF), torque oscillation, and harmonic components were analyzed and compared; thereby identifying the advantages and disadvantages of the two IPMSM structures. Specifically, the V-type IPMSM motor offers higher efficiency, more stable torque, and a higher quality back electromotive force waveform with lower losses, making it suitable for high-performance applications such as electric vehicles and industrial automation. Meanwhile, the U-type structure has lower cogging torque, suitable for low-speed applications or those requiring high precision. Simulation results from the ANSYS Maxwell software show that the IPMSM motor is energy-efficient, has high power density, and operates smoothly, allowing for rapid acceleration, long range, compact configuration, and low maintenance; it uses permanent magnets on the rotor to eliminate losses, making electric vehicles lighter and more efficient than traditional motors.
Volume: 16
Issue: 3
Page: 1107-1117
Publish at: 2026-06-01
Show 62 of 2063

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration