Javascript is required
Search

A vibrant hub of academic knowledge

Our mission is to inspire and empower the scientific exchange between scholars around the world, especially those from emerging countries. We provide a virtual library for knowledge seekers, a global showcase for academic researchers, and an open science platform for potential partners.

Recent Articles
Most Downloaded
Most Cited
Open Access
Research article
Forecasting Yield of Coffee Crop Varieties C×R, Sln3 and Sln5B: A Stochastic Machine Learning Model Based on Agro-Ecological Factors using Multivariate Feature Selection Approach
chandagalu shivalingaiah santhosh ,
kattekyathanahalli kalegowda umesh ,
venkatesh hemanth ,
khatri narendra
|
Available online: 09-29-2025

Abstract

Full Text|PDF|XML
Accurate forecasting of coffee crop yield is essential for enhancing agricultural decision-making, ensuring food security, and mitigating environmental risks. India cultivates both Arabica and Robusta across more than one hundred registered varieties. In this study, yield forecasts were developed for three representative varieties—C×R, Sln3, and Sln5B—using agro-ecological data collected from 2015 to 2022 at the Central Coffee Research Institute (CCRI), Coffee Research Station, Balehonnur, Karnataka, India. A stochastic machine learning framework was employed to identify and evaluate the most influential agro-ecological predictors through a multivariate feature selection approach coupled with correlation matrix analysis. Optimal predictors were organized into three distinct parameter groups, which were then used as inputs to four regression models: Extra Trees (ET), Gradient Boosting (GB), Random Forest (RF), and Decision Tree (DT). Independent testing revealed that the ET model consistently provided the highest accuracy. For C×R, yield was most accurately predicted using Group-1 parameters, such as coffee leaf rust (CLR), minimum temperature (Tmin), maximum temperature (Tmax), relative humidity (Rh), rainfall (Rf), organic carbon (OC), phosphorus (P), potassium (K), pH, plant spacing (Sp), and plant age (Ag), achieving a coefficient of determination (R²) of 0.98 with a Root Mean Square Error (RMSE) of 8.61 kg ha⁻¹. For Sln3, Group-3 parameters, such as CLR, Tmin, Tmax, Rh, Rf, OC, P, K, pH, Ag, Sp, minimum sunshine hours (SSmin), maximum sunshine hours (SSmax), vapor (Vp), and dew point (Dp), produced an R² of 0.98 with an RMSE of 8.27 kg ha⁻¹, while for Sln5B, Group-3 parameters yielded an R² of 0.97 with an RMSE of 7.79 kg ha⁻¹. These results demonstrate the superiority of the ET algorithm compared with GB, RF, and DT models, which exhibited comparatively lower predictive accuracy. Simulation outcomes further revealed that age, rainfall, and the incidence of CLR were among the most decisive agro-ecological determinants of yield. These findings underscore the potential of stochastic machine learning models, particularly the ET model, for enhancing yield prediction and identifying agro-ecological drivers of coffee productivity.

Abstract

Full Text|PDF|XML

This study develops an integrated model to explain e-commerce adoption among agricultural producers by combining the Technology–Organisation–Environment (TOE) framework with social identity theory (SIT). Drawing on cross-sectional data from 585 farmers in Shanxi Province, China, and analysed using Partial Least Squares Structural Equation Modelling (PLS-SEM), the research assesses both the direct and mediating effects of technological readiness, organisational barriers, and environmental enablers. Results reveal that social identity acts as a critical mediator, transforming indirect contextual drivers into adoption behaviour. Notably, factors such as complexity and digital environmental change influence adoption exclusively through social identity rather than direct paths. These findings advance existing literature by embedding sociopsychological mechanisms into digital adoption models, and offer practical guidance for promoting inclusive e-commerce development in rural and agricultural contexts, particularly in developing regions like rural China.

Abstract

Full Text|PDF|XML

As the global tourism industry becomes increasingly shaped by digital transformation, the strategic role of Information and Communication Technologies (ICTs) has gained particular significance, especially in emerging economies. Albania, with its growing appeal as a tourist destination and its economic reliance on tourism, presents a compelling context in which to examine the digital maturity of tourism enterprises. This study investigates the adoption of ICT tools—particularly websites and e-marketing practices—among Albanian tourism businesses and assesses the impact of managerial attitudes and digital infrastructure on perceived business performance. Grounded in the Technology Acceptance Model (TAM) and the Resource-Based View (RBV), the research employs a quantitative survey methodology, collecting responses from 208 enterprises across five key tourism regions. The findings reveal that 81% of these enterprises maintain an active website, with adoption rates significantly higher in coastal areas such as Durrës and Sarandë. Hierarchical regression analysis demonstrates that a favorable perception of ICTs is positively associated with ICT-based marketing strategies (r = 0.243, p < 0.01) and reported profit growth (R² = 0.291). Although high initial website development costs are acknowledged as a barrier, they are also correlated with long-term profitability, reflecting a growing recognition of ICT as a strategic asset rather than a cost burden. The results support the dual theoretical lens: TAM explains the behavioral inclination toward digital tools, while RBV underscores their value as inimitable resources for sustained competitive advantage. The study highlights the need for targeted government policies, including digital upskilling programs, infrastructure investment, and support for small enterprises lagging in digital readiness. Future research could expand this inquiry through longitudinal and cross-country analyses, exploring how emerging technologies—such as AI-driven personalization, immersive media, and data analytics—reshape destination competitiveness in the digital age.

Open Access
Research article
Application of the Analytic Hierarchy Process for Optimizing the Selection of Electric Vehicles in Urban Courier Services
sreten simović ,
jelena šaković-jovanović ,
tijana ivanišević ,
aleksandar trifunović
|
Available online: 09-18-2025

Abstract

Full Text|PDF|XML
The accelerating growth of urban populations, rapid city expansion, and inadequacies in transportation infrastructure have exacerbated traffic congestion and environmental burdens in metropolitan areas. These challenges have intensified the demand for sustainable mobility strategies, with electric vehicles emerging as a central component of urban decarbonization and efficiency initiatives. In this study, a structured multi-criteria decision-making framework was established to determine the most suitable electric vehicle for courier services. The framework was developed using the analytic hierarchy process (AHP), which enables the systematic evaluation of both criteria and sub-criteria and provides a robust mechanism for prioritizing alternatives. To enhance reliability, the model was implemented and validated using Expert Choice software, allowing for consistency testing and sensitivity analysis. Three categories of electric vehicles—electric cars, electric scooters, and electric bicycles—were assessed against a comprehensive set of decision factors encompassing economic, operational, environmental, and infrastructural dimensions. The resulting preference weights indicated that electric cars (0.387) represent the most suitable option for courier services under the evaluated conditions, followed closely by electric scooters (0.316) and electric bicycles (0.297). The ranking highlights the relative advantages of electric cars in balancing load capacity, operational flexibility, and environmental impact, while also reflecting the growing feasibility of scooters and bicycles for last-mile delivery. By offering a transparent and replicable approach to alternative vehicle selection, this research contributes to the optimization of courier logistics and the promotion of environmentally responsible transportation systems in congested urban environments. The methodological framework developed in this study may be adapted for broader applications in sustainable transport planning and fleet management, supporting policy-makers and practitioners in achieving urban sustainability objectives.
Open Access
Research article
Application of Artificial Intelligence on MNIST Dataset for Handwritten Digit Classification for Evaluation of Deep Learning Models
jide ebenezer taiwo akinsola ,
micheal adeolu olatunbosun ,
Ifeoluwa Michael Olaniyi ,
moruf adedeji adeagbo ,
emmanuel ajayi olajubu ,
ganiyu adesola aderounmu
|
Available online: 09-18-2025

Abstract

Full Text|PDF|XML

Handwritten digit classification represents a foundational task in computer vision and has been widely adopted in applications ranging from Optical Character Recognition (OCR) to biometric authentication. Despite the availability of large benchmark datasets, the development of models that achieve both high accuracy and computational efficiency remains a central challenge. In this study, the performance of three representative machine learning paradigms—Chi-Squared Automatic Interaction Detection (CHAID), Generative Adversarial Networks (GANs), and Feedforward Deep Neural Networks (FFDNNs)—was systematically evaluated on the Modified National Institute of Standards and Technology (MNIST) dataset. The assessment was conducted with a focus on classification accuracy, computational efficiency, and interpretability. Experimental results demonstrated that deep learning approaches substantially outperformed traditional Decision Tree (DT) methods. GANs and FFDNNs achieved classification accuracies of approximately 97%, indicating strong robustness and generalization capability for handwritten digit recognition tasks. In contrast, CHAID achieved only 29.61% accuracy, highlighting the limited suitability of DT models for high-dimensional image data. It was further observed that, despite the computational demand of adversarial training, GANs required less time per epoch than FFDNNs when executed on modern GPU architectures, thereby underscoring their potential scalability. These findings reinforce the importance of model selection in practical deployment, particularly where accuracy, computational efficiency, and interpretability must be jointly considered. The study contributes to the ongoing discourse on the role of artificial intelligence (AI) in pattern recognition by providing a comparative analysis of classical machine learning and deep learning approaches, thereby offering guidance for the development of reliable and efficient digit recognition systems suitable for real-world applications.

Abstract

Full Text|PDF|XML

The integration of edge computing for real-time data processing in autonomous systems has been identified as a promising solution to mitigate the performance bottlenecks and latency associated with traditional cloud-based models. Autonomous systems, including vehicles, drones, and robotics, rely heavily on quick data analysis to make timely decisions. However, cloud computing, with its inherent data transmission delays, hinders the responsiveness and efficiency of these systems. To address these challenges, edge computing is proposed as a means to process data locally, at the point of use, thus enabling faster decision-making processes and reducing data transfer overhead. This approach leverages distributed machine learning for decision-making and dynamic resource allocation to balance computational tasks between edge and cloud resources. Through extensive experimentation, it has been demonstrated that the edge computing paradigm can reduce latency by up to 65%, offering substantial improvements in both energy efficiency and data processing speed when compared to traditional cloud-based methods. Furthermore, the proposed system outperforms existing alternatives in terms of computational speed, reliability, and energy consumption. The introduction of an Edge Computing Decision Model (ECDM) and a Dynamic Resource Allocation Algorithm (DRAA) is shown to optimize system performance by balancing computational demands between local edge nodes and remote cloud servers. These innovations enable autonomous systems to function more effectively and efficiently, even in resource-constrained environments. This study highlights the importance of integrating edge computing into autonomous system architectures to meet the growing demand for low-latency, high-performance applications. The potential of edge computing to significantly enhance the reliability and operational capacity of autonomous systems has been established, paving the way for more reliable and scalable solutions in real-time environments.

Abstract

Full Text|PDF|XML
Electroencephalography (EEG) provides a non-invasive approach for capturing brain dynamics and has become a cornerstone in clinical diagnostics, cognitive neuroscience, and neuroengineering. The inherent complexity, low signal-to-noise ratio, and variability of EEG signals have historically posed substantial challenges for interpretation. In recent years, artificial intelligence (AI), encompassing both classical machine learning (ML) and advanced deep learning (DL) methodologies, has transformed EEG analysis by enabling automatic feature extraction, robust classification, regression-based state estimation, and synthetic data generation. This survey synthesizes developments up to 2025, structured along three dimensions. The first dimension is task category, e.g., classification, regression, generation and augmentation, clustering and anomaly detection. The second dimension is the methodological framework, e.g., shallow learners, Convolutional Neural Networks (CNNs), Recurrent Neural Networks (RNNs), Transformers, Graph Neural Networks (GNNs), and hybrid approaches. The third dimension is application domain, e.g., neurological disease diagnosis, brain-computer interfaces (BCIs), affective computing, cognitive workload monitoring, and specialized tasks such as sleep staging and artifact removal. Publicly available EEG datasets and benchmarking initiatives that have catalyzed progress were reviewed in this study. The strengths and limitations of current AI models were critically evaluated, including constraints related to data scarcity, inter-subject variability, noise sensitivity, limited interpretability, and challenges of real-world deployment. Future research directions were highlighted, including federated learning (FL) and privacy-preserving learning, self-supervised pretraining of Transformer-based architectures, explainable artificial intelligence (XAI) tailored to neurophysiological signals, multimodal fusion with complementary biosignals, and the integration of lightweight on-device AI for continuous monitoring. By bridging historical foundations with cutting-edge innovations, this survey aims to provide a comprehensive reference for advancing the development of accurate, robust, and transparent AI-driven EEG systems.

Abstract

Full Text|PDF|XML
Savings and Credit Cooperative Organizations (SACCOs) play a pivotal role in promoting financial inclusion, reducing poverty, and supporting social welfare especially in rural and underserved areas. However, 21% of DT-SACCOs do not operate with prudent financing decisions exposing themselves to financial stress and economic shocks. Even among the SACCOs that met compliance requirements, a drop in the capital adequacy ratio from 16.4% in year 2022 to 16.1% in year 2023 signaled alarming financial strain posing a threat to the existing SACCOs. Alarmingly, 35% of DT-SACCOs have ceased operations attributable to improper financing decisions with three delicensed in January 2025, raising significant concerns over their long-term financial health. Thus, the current study aimed to assess the moderating effect of SACCO size on the relationship between financing decision practices and the financial sustainability of Deposit-Taking Savings and Credit Cooperative Organizations (DT-SACCOs) in Kenya. Anchored on the pecking order theory, the research adopted a positivist paradigm and a cross-sectional survey design. A total of 176 finance managers representing 176 licensed DT-SACCOs constituted the study population. Data were collected by structured questionnaires with a 98% response rate as a sample of 122 respondents was selected by Yamane’s formula. Results from a binary logistic regression indicated that introducing the moderator led to a slight increase in the Nagelkerke R², while the inclusion of the interaction terms further strengthened the relationship between predictor variables and financial sustainability. The findings confirmed that SACCO size had a statistically significant moderating effect on this relationship. This study recommends integrating scenario-based stress testing into financing decisions to assess their long-term impact on different funding structures, so as to facilitate their confrontation of different economic conditions.
load more...
- no more data -
- no more data -