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31,291 Article Results

Inventory model with trade credit policy and carbon emission preservation technology

10.11591/ijeecs.v43.i3.pp824-833
Deep Kamal Sharma , Ompal Singh
This study develops an integrated inventory model that incorporates preservation technology, trade credit policy, inflation effects, and carbon emission tax considerations to optimize supply chain performance. Preservation technology is introduced to reduce product deterioration, thereby extending shelf life and improving consumption efficiency, while trade credit policies provide financial flexibility for retailers. The model reflects the growing influence of regulatory frameworks and technological advancements on inventory management, highlighting how these factors shape future commercial applications. By combining financial mechanisms with sustainability measures, the proposed framework offers a holistic approach to inventory control. The model is formulated mathematically and solved using MAPLE software, enabling precise evaluation of inventory costs under varying cycle lengths. Numerical examples validate the model’s applicability, demonstrating significant reductions in overall supply chain costs when preservation and credit policies are effectively integrated. Sensitivity analysis further explores the impact of key parameters-including deterioration rate, inflation, preservation cost, and carbon emission taxes-providing managerial insights into their role in inventory decisions. The findings confirm that integrating sustainability measures with financial and operational policies enhances cost efficiency, supports environmental responsibility, and strengthens supply chain resilience in modern business contexts.
Volume: 43
Issue: 3
Page: 824-833
Publish at: 2026-09-01

Mitigation of transmission impairments in MMW-RoF systems using digital compensation techniques: A 17.88 GHz bandwidth study at 160 GHz and 90 GHz

10.11591/ijeecs.v43.i3.pp737-748
Sura Mousa Ali
The unprecedented growth of next-generation wireless communication systems has positioned the transmission of millimeter-wave (MMW) signals over fiber-optic links as a critical research area. As 5G and beyond networks continue to demand ultra-high data rates, massive connectivity, and low latency communication, fiber-wireless convergence has emerged as a key enabling technology for realizing scalable, high-capacity, and cost-effective fronthaul infrastructures. This paper addresses these challenges by designing and simulating an radio-over-fiber (RoF) system using VPIphotonics (Ver. 11.1) and Python (Ver. 3.7.6). The proposed compensation framework incorporates digital signal processing (DSP), Algorithms for dispersion compensation, and a phase noise compensator. The system is planned to operate with a bandwidth of 17.88 GHz, a centre frequency of 160 GHz, and a 90 GHz mmWave. Signal transmission is tested over fibre lengths of 50 km and 70 km, evaluating performance metrics such as error vector magnitude (EVM), signal to noise (SNR), symbol error rate (SER), bit error rate (BER), and data rate consistency for different configurations, including 2x2 MIMO. For 2x2 MIMO, EVM values of approximately 3%, 28.3 dBm SNR, 1E-8 SER, and 2E-09 BER over 50 km and over 70 km channel length achieved 4% EVM, 25.89 dBm SNR, 1E-05 SER, and 2E-06 BER at a data rate of 56.656 Gb/s. This compensator ensured robust performance, enhanced signal integrity, and reliable communication over long distances, meeting the developing demands of modern high-speed communication systems.
Volume: 43
Issue: 3
Page: 737-748
Publish at: 2026-09-01

Hybrid deep neural network framework for scalable and robust cardiovascular disorder prediction

10.11591/ijeecs.v43.i3.pp940-946
Venkata Krishna Gandikota , Ponnam Lalitha , Ashok Reddy Kandula , Raghavamsi Davuluri , R. Kanchana , Vishnupriya Borra
Cardiovascular disorders remain the leading cause of global mortality, underscoring the urgent need for accurate and early prediction systems that can support timely medical intervention. Traditional diagnostic methods, while valuable, are often limited by subjectivity, time constraints, and the inability to fully capture complex patient data. To address these challenges, this study proposes a hybrid deep neural network (HDNN) framework that integrates convolutional neural networks (CNNs) and long short-term memory (LSTM) networks, supplemented with dense layers, to enhance predictive accuracy and robustness. The hybrid architecture leverages CNNs’ ability to extract spatial features and LSTMs’ strength in modeling temporal dependencies, thereby providing a comprehensive analysis of structured and unstructured patient data, including clinical records and health metrics. Rigorous preprocessing, feature selection, and domain specific knowledge integration further improve model performance compared to conventional machine learning (ML) approaches. Experimental evaluation on benchmark datasets, including the cleveland heart disease (HD) dataset and a combined multi-source dataset, demonstrated superior results, achieving accuracies of 98.86% and 97.52%, respectively. These findings highlight the potential of the HDNN framework to serve as a scalable, reliable, and clinically relevant tool, assisting healthcare professionals in early diagnosis, preventive care, and improved patient management.
Volume: 43
Issue: 3
Page: 940-946
Publish at: 2026-09-01

Automated recognition of Thai fabric patterns using transfer learning with ResNet-50

10.11591/ijeecs.v43.i3.pp847-856
Kittiya Poonsilp , Pijitra Jomsri , Dulyawit Prangchumpol , Thammarat Panityakul
Traditional Thai fabric patterns are valuable cultural heritage, but expert knowledge of these patterns is declining. This study uses a convolutional neural network (CNN) with transfer learning (ResNet-50) to classify traditional Thai fabric patterns automatically. We collected 961 images across 19 pattern categories, split into training (57%), validation (11%), and test (32%) sets. Using ImageNet pre-trained weights and progressive fine-tuning, the model achieved 99.68% test accuracy with macro-averaged F1-score of 99.35%. Ablation studies validated our approach: augmentation improved accuracy by 2.26%, fine-tuning outperformed frozen backbone by 4.84%, and backbone comparison showed ResNet-50 achieves higher F1-score than MobileNetV2 while MobileNetV2 offers 90% parameter reduction for mobile deployment. Controlled stress tests demonstrated robustness under image degradations typical of smartphone photography. Unlike previous studies using controlled conditions, our dataset includes real-world variations. These results show that transfer learning with small datasets can match expert-level pattern recognition for cultural heritage preservation.
Volume: 43
Issue: 3
Page: 847-856
Publish at: 2026-09-01

Visual and electrical approaches for automated verification of electronic components

10.11591/ijra.v15i3.pp658-668
Sowmya Santhanam , Aadhitya Swaminathan Velmurugan , Durkadevi Chandrahasan , Krithika Arcot Rathna Kumar , Jeevanthika Chepauk , Deepika SasiKumar , Chaithanya Sarangaraj
Reliable inspection and sorting of electronic components have become pivotal along the path of electronic manufacturing toward higher density and automation. Automated optical inspection systems at present depend on visual assessment methods because they do not include electrical testing capabilities, which results in a component verification reliability gap. In spite of recent advances, largely due to the fact that most automated optical inspection systems still abide by visual evaluation, verification of the actual electrical behavior of components became quite impossible. This paper is focused on bridging this gap through the introduction of a unified inspection framework whereby visual analysis is executed along with programmable electrical validation under a single automated process in conformity with Industry 4.0 practices. The system's synchronized workflow includes vision-based detection, optical character recognition, resistor color-band parsing, surface defect analysis, and electrical testing in real time. The component localization task uses YOLOv5, while EasyOCR with a convolutional neural network-long short-term memory (CNN-LSTM) structure and HSV-based segmentation delivers exact value extraction results. The testing system achieved 98.4% classification accuracy, 98.9% value recognition accuracy, and 94.9% overall sorting accuracy when tested on 3,000 photos and 400 physically inspected components at a throughput rate of seven components per minute.
Volume: 15
Issue: 3
Page: 658-668
Publish at: 2026-09-01

Low-cost BLDC drive with PBBO-tuned FOPID controller for enhanced speed regulation and torque ripple reduction

10.11591/ijeecs.v43.i3.pp956-964
Pandi Maharajan M. , Rohini G. , Ravindran Ramkumar , Dharani Kumar Narne
Torque ripple (TR) minimization in brushless DC (BLDC) motors has become a critical research focus due to its direct impact on drive performance, efficiency, and reliability. Conventional BLDC drives typically employ large DC-link capacitors, which increase system cost and weight and are highly sensitive to operating temperature, thereby reducing lifetime. To address these limitations, this work proposes a low-cost capacitor-based BLDC drive integrated with a torque ripple compensation (TRC) technique and optimized control using the probabilistic biogeography-based optimization (PBBO) algorithm. The PBBO method is employed to tune the parameters of a fractional-order proportional-integral-derivative (FOPID) controller, ensuring effective speed regulation and TR reduction. By probabilistically refining migration and emigration rates, PBBO enhances convergence and eliminates redundant species movements, leading to superior controller parameter optimization. Simulation studies validate the proposed PBBO-FOPID approach, demonstrating significant improvements in TR reduction and speed control compared to conventional controllers such as DGOA-FOPID and spider web-based controller (SWC). Results confirm that the PBBO-FOPID controller achieves smoother torque response, reduced ripple, and enhanced speed regulation, establishing it as a cost effective and high-performance solution for BLDC motor drives.
Volume: 43
Issue: 3
Page: 956-964
Publish at: 2026-09-01

Test rig development for overshot water wheels under low-head, low-flow conditions in pico-hydropower applications

10.11591/ijaas.v15.i3.pp1227-1238
Izzatie Akmal Zulkarnain , Irma Wani Jamaludin , Mohd Farriz Basar , Kamaruzzaman Sopian
This study presents the development and validation of a controllable experimental test rig for overshot water wheels operating under low-head and low-flow conditions commonly found in pico-hydropower resources. Many potential pico-hydro sites operate at heads below 1.5 m with minimal flow, where conventional turbines often experience reduced efficiency and suitable laboratory-scale testing facilities remain limited. The developed system consists of two high-density polyethylene (HDPE) water tanks, an adjustable-inclination water channel, a circulation pump, and an overshot water wheel equipped with recyclable polyethylene terephthalate (PET) bottle blades. The test rig operates within hydraulic range of 0.525 - 1.169 m head and 0.01 - 0.02 m³/s flow rate, enabling the simulation of realistic pico-hydropower conditions. Water velocity was regulated using the water trajectory method by varying the channel inclination angle between 10° and 50°, producing velocities ranging from 1.494 m/s to 4.519 m/s. Experimental results show stable and repeatable hydraulic conditions with measurement uncertainty of approximately ± 0.03 m/s. These findings demonstrate that the developed test rig provides a reliable platform for future investigations of overshot water wheel performance parameters, including rotational speed, angular velocity, force, torque, mechanical power, and efficiency in pico-hydropower applications.
Volume: 15
Issue: 3
Page: 1227-1238
Publish at: 2026-09-01

Amaranthus dubius seeds oil extraction using green solvent approach with terpenes

10.11591/ijaas.v15.i3.pp964-974
Rachma Tia Evitasari , Gita Indah Budiarti , Endah Sulistiawati , Adi Permadi , Ika Dyah Kumalasari , Nazira Mahmud , Nor Adila Mhd Omar
This research will explore the potential for utilizing wild amaranth (Amaranthus dubius) seeds, which are abundant and have not been utilized in Indonesia. This research will focus on optimizing the amaranth seed oil extraction process using the response surface method and the characteristics of the oil produced from amaranth seeds. The solvent used in this research is a biobased green solvent, terpenes. This research aims to explore the potential of utilizing wild amaranth seeds by optimizing the oil extraction process using a biobased green solvent, terpenes, through the response surface methodology (RSM). Fourier transform infrared spectroscopy (FTIR) results indicate that the terpenes solvent contains various terpenoids such as α-pinene, β-pinene, and camphene. By applying ultrasound-assisted extraction (UAE) and optimizing the critical process parameters (liquid-to-solid ratio, extraction temperature, and extraction time) through a Box-Behnken RSM design, the maximum oil yield was achieved under environmentally friendly conditions. The optimum condition was reached at a solvent-to-solid ratio of 5.13 ml/0.1 g, a temperature of 49.39 °C, and an extraction time of 47 minutes. With these optimal parameters, the predicted oil yield was 2.04%. The optimized extraction not only delivered a high-quality oil-rich extract but also minimized solvent residue, energy consumption, and hazardous emissions.
Volume: 15
Issue: 3
Page: 964-974
Publish at: 2026-09-01

Multilevel local region sparse shape composition model for liver cancer classification

10.11591/ijaas.v15.i3.pp932-943
Balasubramanian Sakthisaravanan , Ramakrishnan Meenakshi , Thirugnanasambandam Akila , Saravanan Durga Devi , Subbiah Murugan
Machine learning and computer-assisted disease detection are two technological innovations that have significantly improved medical advancement, and recent research has demonstrated their effectiveness. Liver cancer is one of the important causes of cancer-related deaths internationally. Tumor detection in the liver and its classification is challenging due to poor accuracy and high processing requirements available in the existing techniques. In these, there is a loss of edge information and the quality of the images considered. To address these issues in the segmentation and classification of liver cancer, a novel feature extraction method and algorithm called the novel multilevel local region (MLR)-based sparse shape composition model (NMLR-SSC) were developed. This innovative technique identifies the existence of tumors on abdominal computed tomography (CT) images. The input images were obtained from the 3D-IRCADb-01 dataset. The algorithm showed an improvement of 0.22%. When compared to other classifiers. The proposed algorithm showed 100% specificity, sensitivity, and a 98% accuracy rate in detecting the liver tumor.
Volume: 15
Issue: 3
Page: 932-943
Publish at: 2026-09-01

Interpreting potato disease classification using explainable artificial intelligence

10.11591/ijaas.v15.i3.pp1123-1130
Rakesh Kumar Gumasta , Ajay Somkuwar
Timely and accurate crop diseases detection is most important for ensuring global food security. For detecting diseases in crops, many different machine learning (ML) models were proposed. These models work as a black-box, and without proper explanation of these models’ decisions, farmers may find it difficult to trust these systems. For this, many model explainability methods were also proposed. All these methods have been evaluated qualitatively, but their quantitative and cross-comparison are missing. This study addresses this gap by emphasizing quantitative validation of models’ explanations. This study investigates the interpretability and performance of two approaches for potato leaf disease classification: i) manual feature engineering with relief-based feature selection and artificial neural network (ANN) classification with local interpretable model-agnostic explanations (LIME) and ii) deep convolutional neural networks (CNNs) based on mobile network version 2 (MobileNetV2) with gradient-weighted class activation mapping (Grad-CAM). Quantitative assessment of explanation quality was performed using fidelity and robustness metrics. While LIME achieved a lower average fidelity drop 10.90% and higher robustness 84.27% compared to Grad-CAM 18.68% fidelity drops and 79.38% robustness, Grad-CAM provided clearer visual explanations. These findings suggest that explanation effectiveness is influenced by model design and data characteristics, highlighting the need for careful selection of interpretability techniques in precision agriculture applications.
Volume: 15
Issue: 3
Page: 1123-1130
Publish at: 2026-09-01

Quantification and traceability of mango by-products in the Hauts-Bassins and Cascades regions of Burkina Faso

10.11591/ijaas.v15.i3.pp1059-1071
Wendkouni Marguerite Bamogo , Hyacinthe Kante-Traore , Bakary Tarnagda , Boureima Kagambèga , Charles Parkouda , Aly Savadogo
This study provides a regional analysis of mango by-product generation and traceability in the Hauts-Bassins and Cascades regions of Burkina Faso. Through field surveys conducted in samples of 89 processing units and stakeholder mapping, the study quantifies the volume and flow of mango residues and identifies key stakeholders and bottlenecks in the post-harvest chain. Although traceability practices remain largely manual, the study identifies opportunities for digital integration and the added value of utilizing by-products in agro-industrial applications. A total of 52,691 tons of fresh mangoes were processed, primarily from seven varieties. Five types of by-products were identified, with peels, kernels, and sorting waste being the most prevalent. These by-products represented 49.66% of the total processed mango mass. Most by-products were discarded indiscriminately, with only minimal portions allocated to livestock feed (1%) and agriculture (2%). Physical analyses conducted in drying units and laboratories revealed that processing methods significantly increased by-product generation, resulting in pulp losses of up to 31.8%. These results provide a foundation for optimizing the utilization of mango by-products in Burkina Faso through technological innovations. The findings support strategic planning for sustainable resource management and lay the groundwork for the future deployment of traceability systems in tropical agricultural contexts.
Volume: 15
Issue: 3
Page: 1059-1071
Publish at: 2026-09-01

Optimization-enabled machine learning with feature selection for phishing detection system

10.11591/ijaas.v15.i3.pp1131-1146
Lukman Adebayo Ogundele , Julius Temitayo Adepoju , Femi Emmanuel Ayo , Idayat Abike Akano , Abidemi Emmanuel Adeniyi , Halleluyah Oluwatobi Aworinde , Oluwasegun Julius Aroba , Gbohunmi Ajibesin
The rapid evolution of phishing methods has long been a threat to cybersecurity that demands adaptive and intelligent detection techniques. This current work envisions an improved phishing detection system that involves the integration of machine learning (ML) with feature selection for improving the performance of real-time classification. A comprehensive dataset was optimized and preprocessed through Chi-square (CHI) feature selection to reduce dimensionality while preserving the most discriminative features. Random forest (RF) algorithm, selected for its robustness, interpretability, and high computational efficiency for binary classification, was employed and achieved an accuracy of 96.25%, effectively identifying sophisticated phishing attacks. The architecture is designed to operate on large datasets with minimal computational overhead but with high precision and scalability. Experimental results also indicate the dependability of the system with an area under the curve (AUC)-receiver operating characteristic (ROC) score of 1.0, indicating perfect separation of phishing from normal cases. In addition, an adaptive classification model was used to accommodate unknown data sets with a 100% accuracy score. The results above identify the potential of adaptive, feature-optimized ML systems in the ability to handle dynamic phishing attacks and enable proactive cybersecurity defense.
Volume: 15
Issue: 3
Page: 1131-1146
Publish at: 2026-09-01

Predicting perceived information overload from social media use: a machine learning approach

10.11591/ijaas.v15.i3.pp1147-1154
Mohamad Noorman Masrek , Endang Fitriyah Mannan , Zulfatun Sofiyani , Atiqa Nur Latifa Hanum
The rapid growth of social media has intensified users’ exposure to large volumes of information, increasing the risk of perceived information overload. While prior studies have primarily examined this phenomenon using explanatory models, limited attention has been given to its prediction. This study aims to predict perceived information overload from social media use using a machine learning approach. Data were collected through a survey of 349 university students in Malaysian higher education institutions. Social media use across multiple platforms was used as input features, while perceived information overload was treated as a binary target variable. Several machine learning algorithms were evaluated, including decision tree, random forest, k-nearest neighbor, support vector machine, neural network, naïve Bayes, and logistic regression. The results indicate that social media usage patterns contain predictive value for identifying information overload, with the support vector machine demonstrating the strongest discriminative performance. The study contributes to the literature by complementing existing explanatory research with a predictive perspective and highlights the potential of machine learning techniques for early identification of information overload in social media environments.
Volume: 15
Issue: 3
Page: 1147-1154
Publish at: 2026-09-01

Social media resonance on destination dispersion to predict tourist behavior and travel distance using geospatial analysis

10.11591/ijaas.v15.i3.pp883-893
Nindyo Cahyo Kresnanto , Wika Harisa Putri , Muhamad Willdan
This study investigates the influence of social media popularity on tourist destination preferences in Gunungkidul Regency, Yogyakarta, Indonesia, using an integrated big data and geographic information system (GIS) approach. Field surveys involving 504 respondents were combined with sentiment analysis of 30,432 cleaned tweets collected from X (formerly Twitter). Spatial analysis was applied to identify tourist origin patterns and destination attractiveness. The results show that neutral sentiment dominates online discussions, indicating generally positive but moderate tourist experiences. Destinations with higher popularity on social media, particularly Heha Sky View, Drini Beach, and Indrayanti Beach, attracted visitors from broader and more diverse origins. Spatial analysis also indicates stronger preferences for coastal and highland destinations. The integration of big data and GIS enhances understanding of tourism behavior and spatial destination patterns. Future studies are recommended to integrate multiple social media platforms and comparative spatial analyses to improve tourism planning and destination management.
Volume: 15
Issue: 3
Page: 883-893
Publish at: 2026-09-01

One-day analysis of natural sound via very low frequency signal from Malaysian ionosphere

10.11591/ijaas.v15.i3.pp902-910
Suryadi Suryadi , Mariyam Jamilah Homam , Rohaida Mat Akir , Mardina Abdullah
This paper presents findings on the impact of lightning discharges on very low frequency (VLF) signal, which falls from 30 Hz up to 50 kHz has been used effectively for space parameter detection of the lower ionosphere signal propagation over Malaysia. Using a VLF line receiver installed at Universiti Kebangsaan Malaysia (Latitude 2° 55' N, Longitude 101° 46' E), observations conducted on 22 July 2009 revealed distinct diurnal variations. During the daytime, broadband and narrowband data were analyzed to investigate natural radio signals from transmitters in neighboring countries such as India, Japan, China, and Australia. The results reveal significant perturbations in VLF signal propagation caused by lightning discharges, leading to the detection of natural sferics, tweeks, and ionospheric disturbances. These phenomena, originating from radiated lightning discharge activity, were found to average 44 occurrences per hour during the afternoon and evening. The study highlights how these natural electromagnetic events contribute to amplitude and phase variations in VLF signals, offering deeper insights into ionospheric interactions with lightning activity. Additionally, the findings emphasize the presence of natural radio emissions such as sferics and their components, which further illustrate the effect of lightning discharges on the lower ionosphere above Malaysia.
Volume: 15
Issue: 3
Page: 902-910
Publish at: 2026-09-01
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