NPS Australia Submission System
Analysis of Data Privacy, Security, and User Perception in VPN Applications

This paper is significant because it examines data privacy, security, and user perception in VPN applications, which are increasingly important for protecting users’ online activities. It evaluates how effectively VPNs safeguard sensitive data and explores users’ trust, awareness, and concerns regarding VPN security and privacy. The findings can help VPN developers, cybersecurity professionals, and users identify security weaknesses, improve privacy protection, and make more informed decisions when selecting VPN services.

Road Surface Defects and Utilities Detection using YOLO26 with Explainable AI

1. We conduct a comprehensive comparative evaluation of six YOLO models (YOLOv7, YOLOv8, YOLOv9, YOLOv10, YOLOv11, and YOLO26) for multi-class road surface anomaly detection.

2. We design a multi-class detector that is capable of identifying potholes, drain holes and sewer covers correctly based on the images of the roads.

3. We use explainable AI, grounded on Grad-CAM visualization, to increase model transparency, and to gain insight into spatial attention behavior on model.

4. We analyze the models using conventional object detection metrics and show that YOLO26 has the greatest overall detection performance on the studied dataset.

Enhancing Power Factor of EV Chargers: Sustainability & Future Prospects Using Capacitor Banks & Synchronous Condensers

The widespread deployment of wireless electric vehicle charging systems poses major issues for distribution networks such as high reactive power demand, voltage fluctuation, voltage imbalance, power factor issues and harmonic distortion. This study suggests a hybrid reactive power compensation method, which is a switched capacitor bank for steady state support and synchronous condenser for fast dynamic compensation. The charging-system model developed in the project contains the 3-phase grid source, measurement and control units, AC-DC converter, lithium-ion battery and proposed compensation devices. The results of the study indicate that the hybrid system is able to effectively control the sudden changes in reactive power during multi-step wireless charging scenarios. After a large short-term reactive power surge, the power factor recovers to 0.999 in about 4ms and settles at 0.9914. The system also ensures stable battery charging, regulated terminal voltage and better supply current–voltage alignment, whilst retaining the same active power transfer. The proposed method is less complex in implementation, easier to realize and less switching stress than the active power-factor-correction rectifier. Thus, the hybrid configuration offers a viable, robust and scalable power quality enhancement solution as well as wireless electric vehicle charging infrastructure.

Electric Vehicle Inverter Topologies and Total Harmonic Distortion Mitigation: A Comprehensive Study of Recent Advances and Future Trends

The motor performance, powertrain efficiency, driving range and power quality of an electric vehicle (EV) are greatly affected by the electric vehicle (EV) traction inverter. This paper gives a detailed survey of the inverter topologies and total harmonic distortion (THD) reduction methods published in the literature during the last few years. Conventional two-level voltage-source inverters are compared to multilevel voltage-source inverters, such as neutral-point-clamped, T-type, flying-capacitor, cascaded H-bridge, reduced-switch-count and switched-capacitor topologies, with focus on 400 V and 800 V EV architectures. Other modulation and control techniques like sinusoidal pulse-width modulation, space-vector modulation, selective harmonic elimination, nearest-level control and model-predictive control are also assessed. The results show that the three-level NPC and T-type inverter are very suitable for 800 V systems, which can significantly reduce THD and inverter losses, compared to two-level systems. Moreover, switching performance, efficiency, and power density are enhanced even more by the use of wide-bandgap semiconductors, such as SiC MOSFETs and GaN HEMTs. But harmonic performance is also dependent on the variation in the DC link voltage, dead time effects, motor parameters and operating conditions. Issues of adaptive real-time control, reliability-aware design, fault-tolerant operation, and integrated charger–traction inverter systems should be addressed in future research.

Performance and Degradation of Advanced Mobile Batteries: Future Prospects for Sustainable Battery Development

This research focuses on comparative analysis of battery health degradation in Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Po) and Silicon-Carbon (Si/C) battery chemistries for future mobile energy storage applications. The key degradation mechanisms, cycle durability, capacity retention, energy density, thermal performance and barriers to large scale adoption are explored. Although Li-Ion does not have the lowest weight or smallest form factor, it is the industry standard because of the existing manufacturing infrastructure, understanding of its degradation characteristics, and a typical cycle life of 1,000 to 2,000 cycles. Although Li-Po batteries offer versatility of shape, low weight and enhanced leakage resistance, they have limited application for high voltage because of the degradation of polymer electrolyte and the instability at the interfaces. While silicon based batteries (Si/C) have a much higher theoretical capacity and superior practical energy density, silicon expansion of greater than 300% causes particle fragmentation, loss of electrical contact, multiple formation of solid electrolyte interphase (SEI) and rapid capacity loss. In the real world, Samsung’s Si/C battery illustrates the importance of the capacity vs mechanical expansion vs cycle life vs reliability balance. Results show that the choice of an optimal battery technology is very application-specific. Advanced Si/C nanostructure engineering, prelithiation strategies, durable binder materials, next generation polymer electrolytes, scalable manufacturing processes, and AI-based battery management systems for enhanced lifetime performance and degradation prediction are the future research priorities.

Comparative Analysis of a YOLO-Based Model, Custom CNN, and ResNet18 for Facial Emotion Recognition

Facial emotion recognition remains challenging under unconstrained conditions because of variations in pose,
illumination, occlusion, image quality, and class distribution. This
paper compares three deep learning architectures for eight-class
facial emotion recognition: YOLOv8m, a custom convolutional
neural network, and ImageNet-pretrained ResNet18. All models
were trained and evaluated using the same prepared AffectNet
partitions containing 25,262 images. Model-specific preprocessing
and augmentation were applied while preserving a common
training, validation, and test split. YOLOv8m achieved a mean
average precision of 0.8328, while the custom CNN and ResNet18
obtained test accuracies of 56.32% and 71.32%, respectively.
Class-level analysis showed that Fear produced the strongest
YOLOv8m performance, whereas Disgust remained the most
difficult emotion, partly because of its lower sample count
and visual similarity to other negative expressions. The best
YOLOv8m checkpoint was integrated into a Flask-based backend
and deployed through a web application built with HTML, CSS,
and JavaScript, and an Android application developed using Java
in Android Studio. Direct numerical comparison between mAP
and classification accuracy remains limited because the evaluated
models use different output formulations.

Performance Analysis of Mobile Phone Chargers Under Different Charging Loads: Power Quality for Sustainable Charging and Future Prospects

The low-power switched-mode chargers used to power mobile phones can cause power quality issues when installed in large numbers. In this study, there were five anonymized mobile phones (M1-M5) and three anonymized adapters (Charger 1: 18W, Charger 2: 33W, Charger 3: 45W). The number of 15 operating points were analyzed based on the input current total harmonic distortion (〖THD〗_i), power factor (PF), RMS current and active power. Mean 〖THD〗_iincreased from 119.02% for Charger 1 to 148.08% for Charger 2 and 162.98% for Charger 3, whereas mean PF decreased from 0.6146 to 0.5526 and 0.5070, respectively. In all observations, there was a strong inverse relationship between 〖THD〗_i and PF (r = -0.974, p < 0.001). The results show a power quality problem while the phone dependent operation and part load operation, but lack of topology and protocol information makes causal generalization and compliance classification impossible. The results inspire the load-aware design of chargers, low loss current shaping, clear power-quality reporting, and standardized full cycle measurements for sustainable charging.

Dynamic Traffic Light Control System Using Wireless Sensor Network

We have calculated the vehicle priority based on vehicle
weight, length, and carbon emission rate. And also given
higher priority to those vehicles which have higher passenger
capacity. Lengthy vehicles for instance buses are given high
priority because of their higher passenger capacity. They can
accommodate more passengers than small vehicles like cars,
and bikes.
• We’ve generated a formula to prioritize the length considering the vehicle priority and the number of vehicles
up to a certain distance.
• The green signal timing of each lane will be calculated
based on the required time for passing the different types
of vehicles in each lane. Then using the wireless sensor,
control the duration of the traffic light and determine the
phase.
• Our proposed DTLCS also handles emergency vehicles.
When an EV (emergency vehicle) enters a lane, we have
developed a method to pass the EV as soon as possible
by changing the lane priority. The system has the ability
to resume the previous operation in an efficient way
implemented in PTV-VISSIM simulator

Quantifying the Saline Penalty: A Composite Degradation Framework for Techno-Economic Assessment of Floating PV on Coastal Shrimp Ghers in Bangladesh

Floating solar photovoltaics (FPV) have been deployed on freshwater ponds in Bangladesh, but their potential on the saline shrimp ghers of the coastal southwest remains unexplored. This paper proposes the Saline Penalty (SP); a transferable decision-support metric defined as the percentage increase in Levelized Cost of Energy (LCOE) due to saline-induced degradation. Using PVsyst simulation for a 101 kWp FPV system on a representative shrimp gher supplying Mostafa Organic Shrimp Products Ltd. (MOSPL) in Shyamnagar, Satkhira, Bangladesh, we develop a composite degradation framework informed by physically based degradation mechanisms from offshore PV literature. The framework incorporates salt deposition (0.05–0.13% annual acceleration), corrosion (transmittance loss from 91.46% to 70.35%), and biofouling using a multiplicative formulation. Uncertainty analysis via Monte Carlo simulation (10,000 iterations) quantifies the probability of SP exceeding the viability threshold. Results show the Saline Penalty ranges from 48.4% (optimistic, with mitigation) to 101.7% (pessimistic, without mitigation). Sensitivity analysis identifies viability thresholds: projects become economically unviable when SP exceeds ~60% (degradation >1.1–1.2% annually or CAPEX premium >17–18%). Monte Carlo simulation reveals a 34.4% probability of SP > 60% in the optimistic scenario and 100% in the pessimistic scenario. CO₂ avoided ranges from 95.7 to 116.3 tonnes annually. Based on the literature reviewed, this appears to be among the first studies to quantify the saline penalty for FPV in Bangladesh’s coastal ghers, providing a reusable framework for decision-makers evaluating FPV deployment in saline environments which is classified into four categories—Low (<20%), Moderate (20–40%), High (40–60%), and Critical (≥60%); enabling rapid decision-making.

Beyond Whole-Slice: Comparing Encoder Families and Patch-Based Pipelines for Pancreas Segmentation

(1) Comprehensive encoder benchmark: Systematically compares representative CNN, Transformer, and hybrid CNN–Transformer encoders for pancreas segmentation under a unified experimental setting to identify the relative strengths of different feature-extraction paradigms.

(2) Progressive segmentation-pipeline evaluation: Evaluates four segmentation pipelines designed to address key challenges in pancreas CT segmentation, including severe foreground–background imbalance, low boundary contrast, and substantial anatomical variability.

(3) Rigorous performance–efficiency analysis: Evaluates all architecture–pipeline combinations using identical five-fold cross-validation and analyzes segmentation performance alongside model size and inference time, identifying the combination that provides the best balance between accuracy and computational efficiency.

Air Quality Index Forecasting in Dhaka Using Deep Learning: A comparative study of LSTM, GRU, and BiLSTM+Conv1D

This study presents a comparative deep-learning framework for multi-step Air Quality Index (AQI) forecasting in Dhaka using LSTM, GRU, and BiLSTM+Conv1D models trained on a 25-year hourly time-series dataset. The research systematically evaluates the impact of 6 h, 12 h, and 24 h historical input windows on forecasting accuracy and demonstrates that the hybrid BiLSTM+Conv1D model achieves the best overall performance (R² = 0.9948, RMSE = 1.5773, MAE = 1.1358). The work highlights the joint importance of model architecture and temporal context for accurate urban AQI prediction and supports the development of intelligent environmental monitoring systems.

YOLO-HVConv: A Horizontally-Vertically Aware YOLO for Road Damage Detection

Road damage detection is an important component
of the intelligent transportation system, which helps in timely
maintenance of roads and enhances transportation safety. How
ever, accurate detection of road damages is still a challenge due
to the presence of small, thin and elongated crack structures,
different damage scales and class imbalance. To address these
issues, this paper proposes an enhanced YOLOv8s-based frame
work for road damage detection by integrating the Horizontal
and Vertical Convolution (HVConv) modules at multiple stages
of feature fusion in the neck. To better model thin and elongated
road damage patterns, we incorporate HVConv into the P3 and
P4 feature levels in the proposed architecture while maintaining
the lightweight property of the original detector. An experiment
was carried out on a combined dataset of the China Drone and
China MotorBike subsets of the RDD2022 dataset. Comparative
evaluations were conducted against the baseline YOLOv8s model
and other HVConv configurations. The proposed YOLO-HVConv
model obtained the best overall performance (i.e., 82.57% preci
sion, 79.89% recall, 83.12% mAP@50, and 51.88% mAP@50:95).
Moreover, the model was more effective in detecting small
and medium road damages, with AP values of 55.71% and
40.57% respectively. The experimental results demonstrate that
the suggested integration method of multi-scale HVConv can
enhance the feature representation for road damage detection
while maintaining computational efficiency, making it suitable
for practical intelligent road monitoring applications.

HybridGuard: A Graph-Temporal Fusion Architecture for Real-Time IoT Intrusion Detection on Identity-Less Flow Data

This work makes two contributions to graph-based intrusion detection for identity-less IoT flow data. First, it introduces a proxy session graph construction method that enables relational modeling on datasets like CIC-IoT-2023, where conventional endpoint-identity-based graphs (IP/MAC) cannot be built. Second, through rigorous multi-seed statistical validation, it demonstrates that graph structure alone is insufficient in this setting — the GNN-only variant underperforms a simple tabular baseline on both tasks — while a gated fusion of spatial (GAT) and temporal (Transformer) representations yields a statistically significant improvement over Random Forest on binary detection (p = 0.0001), with real-time-feasible latency (3.66 ms/window). This finding reframes the value proposition of graph-based IDS: not as a standalone improvement, but as a component that becomes effective only when fused with temporal modeling.

SCAPS-1D Modeling and Multi-Parameter Optimization of a CABTSe/MASnI3 DoubleAbsorber Lead-Free Solar Cell

This study reports the first systematic, multi-parameter co-optimization of a lead-free double-absorber solar cell (DASC), jointly tuning ETL selection, absorber thickness, acceptor doping, temperature, and back-contact work function within a single CABTSe (CuAgBeSnSe4)/MASnI3 device architecture—an integrated approach that prior DASC studies had not addressed, since earlier work optimized these parameters individually rather than in combination. Using SCAPS-1D numerical simulation, we screened six ETL materials (WS2, SnS2, ZnSe, ZnO, PCBM, and TiO2) against a Zn3P2 hole transport layer and identified SnS2 as the optimal ETL,the optimal FTO/SnS2/CABTSe/MASnI3/Zn3P2/Au architecture, achieving 32.53% power conversion efficiency (PCE), while acceptor-doping optimization alone yielded 38.26% PCE, providing practical design guidelines for high-efficiency, environmentally friendly next-generation photovoltaic devices.

A Super-Convergent Knowledge Distillation Framework for Domain-Specific Text Classification

Large language models have pushed the recent-most
in Natural Language Processing (NLP), but are often too high
cost to deploy in safety-critical, domain-specific use cases such
as biomedical text processing, where efficiency is essential. This paper proposes a knowledge distillation framework for learning
lightweight and effective models. The framework rests on two
key methodological pillars, firstly a multi-teacher ensemble that
supplies diverse, strong knowledge representations to the student,
and secondly an adaptive, multi-component loss function that
shifts focus among several learning signals during training. The
overall objective is to achieve what we call super-convergence,
a setting where a compact student model retains much of its
teachers’ capability while remaining highly competitive with a
much larger ensemble. Experiments on a biomedical sentence
classification task (PubMed 20k RCT) show that a distilled
DistilBERT student with about 66M parameters achieves 0.8659
accuracy and 0.8623 weighted F1, coming within roughly 0.9
F1 points of a ∼287M-parameter heterogeneous BERT-family
ensemble. In practice, this corresponds to a more than 4.3×
reduction in parameter count and substantially faster inference,
with only a marginal loss in predictive performance. These
results highlight a practical direction for building resource
conscious yet high-performing AI systems in specialized domains.

Privacy-Preserving Sentiment Analysis using PATE-based Federated Learning

Due to the proliferation of user-generated text data
on personal devices, sentiment analysis has become more important for understanding public opinion, business performance,
and mental health indicators. However, existing methods require
the raw private text data to be sent to a central server, a
practice in direct violation of data protection policies such as
GDPR and HIPAA. In this paper, a new framework called PATE-FL, integrating Federated Learning and the Private Aggregation
of Teacher Ensembles, is introduced to achieve strong (ϵ, δ)-
differential privacy and maintain competitive task performance.
Eight teacher models are trained on three heterogeneous clients, with all inter-client communications being AES-GCM encrypted. Through knowledge distillation, a single student model is then trained on noisy soft label data generated by aggregating the votes of all teacher models on approximately 3,500 unlabeled public text samples, thus eliminating any direct exposure of the final model to raw private text data. Performance evaluation on a balanced 50,000-sample text corpus results in 85.94% ± 0.30% accuracy and macro F1, achieved at a strong level of privacy characterized by ϵ ≈ 3.5 and δ = 10^−5 . These results demonstrate a significant advancement of existing privacy-aware methods in terms of performance and privacy guarantees.

A Hydro-Mechanical Framework for Slope Mounted Agrivoltaic Infrastructure: A RUSLE Based Framework for Dripline Scour Mitigation and Foundation Stability

Bangladesh’s renewable energy roadmap targets 60,000 MW by 2041, necessitating solar deployment on steep,erosion-prone slopes in the Chittagong Hill Tracts; yet the geotechnical implications of hillside PV infrastructure remain critically understudied. This paper introduces a hydro mechanical framework that couples RUSLE-calibrated soil loss prediction with a geometric concentration factor and infinite slope stability analysis to evaluate foundation resilience on a 21° engineered terrace at Alutila, Khagrachhari. Rainfall intercepted by 3m-wide PV panels concentrates at the 0.1m-wide drip edge, creating a 30x concentration factor (CF = 3.0/0.1 = 30) that accelerates localized scour directly around pile foundations. Under bare slope conditions, erosion of 86.62 t/ha/yr translates to 185.6 mm/yr of localized scour, reducing pile embedment from 1.5m to 1.0m over five monsoon cycles and increasing the overturning lever arm by 33.3%. The proposed coupled PV+Vetiver system reduces scour to 1.18
mm/yr (99.4% reduction), preserving 99.3% of design embedment. Infinite slope stability analysis shows the Factor of Safety (FoS) recovering from 0.98 (UNSTABLE) under bare conditions to 1.76 (STABLE) within two years of Vetiver establishment. Sensitivity analysis under extreme conditions
(+25% rainfall, +50% immaturity factor) confirms FoS = 1.23 > 1.2, proving robust resilience. The framework offers three distinct contributions: the first mechanistic “dripline bio-shield” concept using strategically placed Vetiver; the first quantitative linkage between monsoonal soil erosion and pile foundation embedment in agrivoltaics; and a transparent,
software-free methodology calibrated for Bangladesh’s hill slopes. Practical recommendations are provided for engineers, policymakers, and regulators deploying solar infrastructure in monsoon-affected regions.

Sustainability in Higher Education Institutions (HEIs): Two-Step Assessment Approach for Least Developed Countries

Globally recognized sustainability assessment tools (SATs) for higher education institutions (HEIs) predominantly focus on performance outcomes rather than institutional readiness for sustainability transformation, thereby overlooking the unique challenges faced by HEIs in least developed countries (LDCs). This conceptual paper proposes theory based conceptual framework for assessing HEI readiness for SDG-oriented transformation in resource-constrained settings. The study conceptualizes sustainability readiness as an institution’s ability to identify, absorb, implement, and maintain SDG-oriented transformation, drawing on Institutional Theory, Resource-Based View and Organizational Readiness Theory. The paper introduces a novel Two-Step Assessment Approach for sustainability in HEIs, first assessing institutional readiness, followed by performance evaluation, specifically designed for LDC contexts. The proposed framework comprises of six interconnected dimensions: government preparedness, financial readiness, infrastructure readiness, academic and research readiness, socio-cultural readiness, and monitoring and reporting readiness. The framework contributes to advancing sustainability literature from outcome-based assessment toward readiness-based institutional transformation in HEIs across LDC contexts, particularly in South Asia and Sub-Saharan Africa. The paper further proposes theoretical propositions to guide future empirical validation and policy formulation.

AI-Driven Resume Classification and Job Recommendation System

The paper presents an AI-based system that enhances job-matching by using machine learning (ML) and natural language processing (NLP) techniques to improve resume screening and job recommendations.

A Comparative Evaluation of GPT-4o-mini and GPT-3.5 Turbo for Natural Language Spreadsheet Formula Generation

This paper presents the development and evaluation of a formula generation tool integrated into Google Sheets using GPT-4o-mini, with a comparative analysis of its efficiency and cost against GPT-3.5 Turbo model.

Beyond Point Estimates: Stability-Aware Interpretable Machine Learning for Drug-Induced Autoimmunity Prediction

This paper addresses both gaps directly on a public UCI
dataset, the RDKit-descriptor release underlying InterDIA.
Our contributions are:
1) A leakage-safe, nested cross-validation benchmark of
six algorithm families (linear, bagged-tree, two boosting
variants, and an imbalance-aware ensemble), with
algorithm ranking corroborated by a Friedman/Nemenyi
statistical test, and confirmed on the official heldout
test set.
2) A bootstrapped feature-selection stability analysis using
Jaccard similarity and Nogueira’s chance-corrected
stability index, quantifying how much ”important”
descriptors shift under resampling in this highdimensional,
small-sample regime.
3) A systematic SHAP-vs-LIME cross-validation, comparing
global and per-instance rank agreement and top-k
feature overlap, to test whether aggregate XAI agreement
masks local disagreement.
4) A descriptor-space matched-pair mechanistic sanity
check, inspired by InterDIA’s structurally matched case
studies and by matched molecular pair analysis in
medicinal chemistry, used here as a proxy robustness
probe rather than a validated structural-analogue
analysis.

A Two-Stage Global-Scan Fuzzy Logic MPPT for Grid-Connected PV Systems Under Partial Shading Conditions

Most fuzzy-MPPT papers only handle uniform irradiance, where a single local controller is enough. Under partial shading, that same controller becomes actively misleading — it will converge confidently and with low ripple onto the wrong peak, silently losing 20–30% of available power.

This paper’s contribution is a low-overhead fix for that specific failure mode, positioned between two existing extremes:

Cheaper than metaheuristic GMPPT (PSO/GWO-fuzzy hybrids): no swarm size, inertia weights, or iteration tuning — just a one-time bounded voltage sweep (20 points × 10 ms) triggered on a shading event.
More reliable than plain local MPPT (P&O or fuzzy alone): guarantees the global peak is found rather than whichever peak the local gradient happens to lead to.

Its most concrete, defensible finding is a subtle failure mode most papers gloss over: correctly locating the global peak isn’t sufficient — a purely local fine-tracking stage can still drift back off it across a shallow valley created by bypass-diode kinks. The fix (bounding the local controller’s excursion window to the scan’s own resolution) is a small, cheap, and reusable design rule, not just a result specific to this array.

So the contribution is narrow and practical rather than a fundamentally new algorithm: a documented, minimal recipe for retrofitting global-search capability onto an existing local fuzzy controller, plus the reason a naïve version of that retrofit quietly fails

An Offline, Voice-Enabled Mobile System for Leaf Disease Detection in Low-Resource Agricultural Settings of Bangladesh

The main contribution is a complete offline, voice-first pipeline for crop leaf disease diagnosis, not just a compressed classifier but full Bangla voice guidance built for low-literacy users, running entirely on entry-level Android hardware with no internet dependency. The quantized MobileNetV2 model (3.8 MB, 92.8% accuracy) delivers a full capture-to-spoken-diagnosis cycle in under 400ms, addressing a gap in prior mobile plant-disease systems, which are typically cloud-dependent, text-based or English-only. The system was field-validated with 10 real smallholder farmers of mixed literacy, achieving 100% unassisted task completion and 4.7/5 satisfaction — early evidence that offline, voice-first agricultural AI is both technically and practically viable in rural Bangladesh.

Blockchain-enabled Secure Central Bank Reserve Management: A Framework on a Single Case Study

This research adds to the information systems scholarship by broadening the concept of digital empowerment to the domain of central-bank reserve management. Additionally, it offers central banks and financial institutions a useful design guidance for enhancing their cyber resilience within the constraints of existing international payment systems.

XMF-FL: An Explainable Multimodal Feature Fusion Federated Learning Framework for Multi-Class Kidney Disease Classification

We proposed an explainable multimodal feature fusion FL framework for privacy-aware multi-class kidney disease classification. The framework integrates a fine-tuned transfer learning model (i.e., FT-EfficentNetB0) and a customized CNN model using a multimodal dataset (i.e., kidney CT images and corresponding clinical data) in a heterogeneous environment to enhance the
performance of kidney disease. In addition, the framework explains predictions through XAI methods to provide accurate, trustworthy, and privacy-preserving kidney disease diagnosis.

The key contributions of this study are presented as follows:
1) We propose an explainable multimodal feature fusion federated learning framework called XMF-FL for classifying multi-class kidney diseases into four categories while preserving patient privacy.
2) We implemented a heterogeneous data distribution simulation environment with multiple healthcare clients to ensure the performance of the framework in a real clinical environment.
3) The Explainable AI (XAI) integrates with the framework to identify key imaging and clinical features, enhance model transparency, and ensure the trustworthiness of clinicians.
4) We compared the proposed XMF-FL framework with
the state-of-the-art models to validate the effectiveness.

A state-aware progressive Bézier path modifier for cost-aware 3D UAV navigation

This work proposes a progressive, state-aware downstream layer of Bézier trajectory modification framework for agile UAVs operating in complex three-dimensional environments. The main contributions of this research are:

1) A motion-state-aware Bézier trajectory modification approach that incorporates the UAV’s instantaneous velocity magnitude and heading to initialize Bézier control points and generate locally executable curved trajectories

2) A three-stage progressive control-point search strategy that adaptively explores candidate trajectory geometries, progressively extends the Bézier segment across successive waypoint corners based on collision-free feasibility and reduces unnecessary candidate evaluations through early horizon termination

3) A multi-objective candidate evaluation framework that balances directional continuity, curvature-induced lateral-acceleration demand and path efficiency, while enforcing obstacle clearance as a hard feasibility condition.

A Gender-focused Multi-level Data Analysis and Visualization of Academic Research and Collaboration in Bangladesh

The core contributions of this work:
• Granular and Gender Focused Data Investigation.
• Advanced Collaboration Network Exploration.
• Composite Institutional Ranking and Publication Venue List.
• Interactive and Data-Driven Web Platform.

RareGuard: Effective-Number Reweighting with Selective Prediction for Multiclass Intrusion Detection

An intrusion detector may perform well on an
imbalanced test set and still miss the rarest attacks. We study that
tradeoff using the official UNSW-NB15 training and test files.
RareGuard fits a histogram gradient-boosted classifier with effectivenumber weights chosen on a 20% validation partition, then applies a
confidence threshold fixed on the same partition. Effective weighting
increases test macro F1 from 0.4924 to 0.5144 and balanced accuracy
from 0.5428 to 0.6198. Inverse-frequency weighting reaches 0.6488
balanced accuracy, but macro F1 falls to 0.4960 and calibration
deteriorates sharply. RareGuard also sacrifices overall accuracy, from
0.7649 to 0.7264, while expected calibration error increases from 0.0661
to 0.0872. A validation threshold aimed at 80% coverage accepts 85.77%
of test flows and yields 0.7990 conditional accuracy. RareGuard is
therefore not uniformly better than the alternatives. It is better viewed as
a first-stage policy for settings that prioritize class-balanced recognition
and can route low-confidence flows to another process. The executed
pipeline is documented with checksums, settings, adverse results, perclass recall, model size, and latency.

Harnessing Machine Learning for 6G-Integrated Network Security: Opportunities and Challenges

This research provides a comprehensive analysis of the role of machine learning in enhancing security for future 6G networks. It reviews existing ML-based security approaches, identifies key opportunities such as intelligent intrusion detection, adaptive threat prediction, automated response mechanisms, and privacy-preserving security solutions. Additionally, the study highlights major challenges, including adversarial attacks, data privacy issues, computational complexity, and standardization limitations. The paper proposes future research directions toward developing secure, intelligent, and autonomous 6G network architectures through advanced AI-driven security frameworks.

LiMCor-Net: An Extremely Lightweight Multi-Scale Context Refinement Network for Liver Segmentation from Abdominal CT Images

We built a extreamly lightweight model for liver segmentation

Light Intensity Control Using Single-Phase Controlled Rectifier (SCR)

I designed and tested an SCR-based light intensity control system using phase angle control. My work involved evaluating its efficiency, power factor, and harmonic distortion (THD) to demonstrate a practical and affordable solution for lighting control.

An Explainable AI-Based Framework for Cardiovascular Disease Detection and Risk Prediction Using Machine Learning

Cardiovascular diseases (CVDs) are still one of the
leading causes of death in the world, and traditional screening
methods are often unable to detect early warning signs. The
authors propose a dual-purpose machine learning model that is
able to detect the presence of a heart disease and to predict a
continuous cardiovascular risk score from the same 1,035 patient
dataset. For this work, sixteen classification and regression
algorithms have been tested, some of which had never been
used in the reference study it is based on: ExtraTrees, AdaBoost,
Voting (Hard/Soft) ensembles for classification and ExtraTrees,
VotingRegressor, and Gaussian Process for regression. A moder
ate SMOTE strategy was employed to counteract class imbalance,
and a stratified 70/30 train-test split and 5-fold cross-validation
was used to prevent overfitting. ExtraTrees showed the best
classification performance (97.65% ± 0.95% CV; 98.71% test
accuracy; AUC = 0.998), while Linear Regression showed the best
regression performance (CV R² = 0.9794 ± 0.017; test R² = 0.99).
Interestingly, Voting Soft did not outperform ExtraTrees, which
means that the errors of the tree-based models are correlated.
SHAP and LIME gave interpretability on the global (chest pain
type, number of major vessels (ca), exercise-induced angina) and
local level (thalassemia status). The results demonstrate that
a well validated and modestly-enriched structure can achieve
comparable and more accurate performance to previously re
ported benchmark, while being transparent and overfitting proof
resistant.

Machine Learning-Assisted Confinement Loss Prediction for a Highly Sensitive PCF-SPR Sensor

A photonic crystal fiber (PCF) based surface plas-
mon resonance (SPR) sensor is proposed for the simultaneous
detection of two analytes over a wide refractive index (RI)
range. Surface plasmons are excited by a single gold (Au) film
deposited on two open channels formed on the outer surface
of the fiber. Across the RI range
of 1.25– 1.43 RIU, a maximum wavelength sensitivity of 23,200
nm/RIU, a peak amplitude sensitivity of 2235.71 RIU−1 and
a best sensor resolution of 4.31 × 10−6 RIU are achieved,
and the two channels are shown to respond selectively to their
own analytes without noticeable crosstalk. The suggested sensor
with a wide sensing range, excellent detection capability, and
compact structure has great potential for biochemical sensing,
chemical analysis, environmental monitoring, and point-of-care
diagnostics. Furthermore, six machine learning regression models
are implemented to predict the confinement loss, among which
Random Forest exhibits the best predictive accuracy with an R2
of 0.9759.

Water Pixel Dilution Bias: A Systematic Measurement Error in Riverine Spatial Feature Engineering

This study identifies and formalizes Water Pixel Dilution Bias (WPDB), an overlooked measurement error where river water pixels distort surrounding land use calculations in standard circular GIS buffers. We derive an exact mathematical formula to predict this bias and validate it across 11 monitoring stations on two rivers in Dhaka, Bangladesh. We also provide a practical flow aware normalization method to correct this distortion in everyday GIS and environmental data science workflows.

Smart Firefighting Robot with Thermal Imaging and IoT-Based Human Detection for Enhanced Rescue Operations

Fire is an event that can cause a lot of loss of life
and property in residential, industrial and commercial
buildings. Abstract It is important to quickly suppress fires and
identify trapped persons to limit loss of life and property. In this
paper, the design and development of an autonomous robot with
Internet of Things (IoT) technology that can detect the presence
of humans in a fire zone and feed the real time alarm
information to a monitoring server is presented. The proposed
system consists of a master controller – Raspberry Pi and a slave
controller – Arduino, which synchronize the sensing, navigation,
communication, and the firefighting processes. Environmental
awareness and obstacle detection is achieved with the use of gas,
ultrasonic, microphone and camera modules, and the thermal
sensor is used to detect the presence of human. The robot has a
Dry Chemical Powder (DCP) fire suppression capability to
effectively put out fires. Through LoRa SX1278 communication
technology, the long-distance transmission at low power allows
for continuous monitoring of critical data even in difficult
conditions, to a local server. Experimental results prove the
capability of the system to accurately detect human presence,
real sense temperature change and prompt emergency
notification to control center. The proposed solution will provide
a cost-effective, reliable and intelligent solution to firefighting
and rescue missions, minimize human firefighters’ exposure to
dangerous environments and enhance the efficiency of
emergency response.

An ESP32-Based Automated Obstacle-Aware Level Crossing System Using Infrared Sensors

The rail and road traffic interact at important
points at rail level crossings, these are the points where manual
operation can be carried out. The absence of real-time monitoring
usually results in severe accidents, particularly in developing
nations. The design is depicted in this paper. and installation of
an ESP32-powered automated obstacle-aware rural level crossing
system through the use of infrared sensors. The proposed system
identifies that a train is approaching and sends a servo motor to
automatically open and close the gate. and at the same time giving
visual and audible warnings. with LED indicators and a buzzer.
The ESP32 microcontroller monitors sensor inputs in real time
and acts in time. of the gate by human intervention. Experimental
results prove good working, rapid response, and fluency. gate
control in controlled conditions. It is created with low-cost and
easily accessible components, so the system is developed cheaply.
it appropriate to be deployed at an unmanned or semi-manned
railway. crossings. The solution suggested leads to less human
dependency, reduces the reaction time, and improves the situation
with the safety of the entire railway intersection.

A Smart Umbrella Design for Enhancing Thermal Comfort in Outdoor Environments

Extreme heat poses a significant threat to human
comfort and health, particularly for individuals who stay
outside for long durations. In this article, the design and
development of a smart umbrella system are proposed, aiming
to enhance personal thermal comfort in hot environments. The
proposed umbrella integrates an active cooling system powered
by a compact-scale control unit. A pelteir module is used here to
convert heat energy into lower and comfortable temperature,
offering a portable and wearable solution to mitigate heat stress.
The system intelligently manages airflow and temperature
within the shaded zone, thereby increasing overall comfort and
usability during hot conditions. The design prioritizes energy
efficiency, usability, and ergonomic factors to ensure versatility
in urban and rural outdoor settings. Field testing validates the
effectiveness of the system for reducing perceived heat,
demonstrating its readiness for use among pedestrians, outdoor
workers, and vulnerable populations. This paper proposes a
sustainable and scalable approach to climate control at a
personal level through wearable smart infrastructure.

Renewable-Powered EV Charging Stations: A Structured Review of Global Technologies, Challenges, and a Sustainable Deployment Roadmap for Bangladesh

This study provides a structured review of renewable-powered EV charging stations, identifies key research gaps, and proposes a region-specific deployment roadmap for Bangladesh with practical recommendations for sustainable EV charging infrastructure.

Multimodal Deep Learning Approach for Multi-Class Oral Disease Detection and Classification

1.Proposed a Novel hybrid model for multi-class oral disease classification.
2. Combined image features (ViT) with medical contextual knowledge (MedBERT) for improved diagnosis.
3. Applied data preprocessing and augmentation to enhance generalization and reduce overfitting.
4. Achieved 99.71% accuracy, outperforming existing deep learning models.
5. Evaluated performance using precision, recall, F1-score, confusion matrix, and comparative analysis.
6. Demonstrated the model’s clinical potential for accurate and efficient oral disease diagnosis.

ESP32-Based Smart Fire and Gas Hazard Detection with Multi-Channel Alert Mechanisms for High-Risk Urban Buildings

Today, the fire leakage and gas leakage risks are
presenting a life and property threat, particularly in urban areas, where a lot of people are present. Traditional systems are slow to detect hazards, prone to false alarms and are not able to function when there’s a power or internet outage. These issues are addressed by our system. Our solution is based on
the ESP32 fire and gas detection system. To ensure accurate detection, multiple sensors are used in the system, such as the MQ-2 sensor, flame sensor, and DHT11 sensor which is used to measure temperature and humidity. These sensors feed into the ESP32, which analyzes the data and signals to look for any
potential hazards. When it is determined that there is a hazard, the system alerts the users using multiple methods. One way, they are alerted with a buzzer and LEDs if they are around. Moreover, a web dashboard and Telegram bot send live updates
and notifications online. If Wi-Fi is down, the system will transmit the alerts using the GSM module via SMS. We have developed a three-layer system that has ensured rapid and reliable delivery of the warning to the user. The result demonstrates the rapid detection, minimal risk of false alarms and robust performance even in challenging environments. The use of multi-sensor fusion for accurate and immediate hazard identification is one of the
important contributions of this research in the field of fire hazard detection, which will provide a timely alert with online and offline communication channels to the user.

Policy-Driven Deep Learning Framework for Facial Age Verification in Senior Citizen Welfare Programs

One of the main requirements is the eligibility on the basis of age. In most of the elder citizen welfare programs.However, traditional document-based checking systems are still susceptible to manipulation and falsification of claims. This study proposes a deep deterrence age verification paradigm to aid in the equitable distribution of elderly benefits, which is resistant to
fraud. Instead of pre-emptive age discrimination, the problem is subjected to a policy-reformulation. Discrimination is an aligned
binary classification task that differentiates individuals. under 60 years compared to 60 years and above. A large-scale database with over 160,000 images obtained. Two open-source repositories are used in model training. and evaluation.Three convolutional neural network architectures. Comparatively three architectuere,
VGG16, EfficientNet-B3, and ResNet-50, are comparable. that were processed under the same experimental conditions. To address lopsidedness and minimize the chances of abandoning
deserving elderly. persons, a class-conscious training practice of selective. Weighted loss optimization and data augmentation are used. The proposed framework has proven successful after
experimental results. obtains good F1-scores and high accuracy, and at the same time. strong recall among the older age group of 60 +. The findings indicate that the suggested solution offers a policy-congruent, trustworthy, and age verification Automated solution that is a socially responsible one. real-world welfare
systems.

A Tabular Transformer-Based Deep Learning Framework for Flood Prediction Using Long-Term Meteorological Data from Bangladesh

This work suggests a transformer-based SAINT system to predict floods for Bangladesh which outperforms traditional machine learning and deep learning models with an accuracy of 97.83%. It also tackles the issue of class imbalance through the use of the SMOTE method and strengthens the interpretability of the models with the help of explainable artificial intelligence (XAI) using the SHAP approach, which will enable to interpret the contribution of meteorological variables to flood forecasting, giving the model more transparency.

Human Centered Digital Wellbeing through a Multi-Agent Actor–Critic Framework for Social Media Addiction Mitigation

1. Propose a human-centered RL framework to reduce social media addiction while balancing engagement and well-being.
2. Develop a realistic simulation environment modeling user behaviors like mood, fatigue, and break adherence.
3. Introduce a lightweight multi-agent actor–critic model with adaptive intervention strategies.
4. Achieve statistically significant improvements in digital well-being and high validation accuracy (92.6%) compared to baselines.

Fed-OCT-IoT: CBAM-Augmented EfficientNet with Federated Learning and Explainable AI for Retinal OCT Diagnosis

There are three primary obstacles to the automated
classification of retinal diseases using OCT: severe class imbalance, the high expense of transformer-based models, and
complications in gathering patient data from multiple medical
facilities. We address all three obstacles. We suggest utilizing an
EfficientNet-B3 backbone combined with a Convolutional Block
Attention Module (CBAM) for our framework to categorize seven
classes in the OCTDL dataset. To address the imbalance issue, we
employed a focal loss and oversampled certain data. The model
was assessed using a 5-fold cross-validation method at the patient
level along with a held-out test set, and was compared to four
independently trained baseline models. Our model outperformed
the baseline models in terms of accuracy. Component-wise
ablation studies revealed distinct contributions of the spatial and
channel-attention mechanisms. We also examined lighter versions
of federated learning, specifically FedAvg and FedProx for edge
devices in both IID and non-IID contexts. In this scenario,
FedProx did not perform better than FedAvg. We assessed
the model’s effectiveness using the Integrated Gradients and
Occlusion Sensitivity methods. Finally, we propose a theoretical
framework for IoT edge implementation and consider it viable
in terms of efficiency, without the need for physical testing in
person, which can be further investigated in future research.

A Robust Integrity Verification and Recovery Framework for Coarse-to-Fine Text Semantic Communication Against Model Tampering Attacks

This paper proposes the first integrity verification and recovery framework for text semantic communication systems that combines component-level tamper detection, localization, and automatic recovery. Using cryptographic fingerprints and digital signatures, the framework verifies receiver model integrity, detects unauthorized tampering, identifies the affected component, and restores it from a trusted backup. Experiments under AWGN and Rayleigh fading channels demonstrate 100% detection and localization accuracy, with recovery completed in about 96 ms while maintaining reliable semantic communication performance.

Cross-Dataset Generalization Analysis of Transfer Learning Models for Osteoporosis Classification Using Knee X-ray Images

Deep learning techniques have shown promising results for osteoporosis classification using radiograph images. However, the real-world applicability is overestimated by most of the existing studies as they evaluated their model only on a single dataset. To address this limitation, this study investigates the cross-dataset generalization performance of transfer learning models, ranging from lightweight to heavyweight CNN architectures, for knee osteoporosis classification using X-ray images.The study provides insights into the generalization capability of different types of deep learning architectures and may help researchers select suitable models for future osteoporosis classification and medical image analysis tasks.

Enforcing Regulated Fares at the Vehicle Level: An Offline ESP32 Meter for Auto-Rickshaws

Auto-rickshaws carry a large share of short-distance
urban trips in Bangladesh, yet most of them run without any fare
meter. Fares are settled verbally before each trip, and the gap
between what a driver asks and what a passenger expects to pay
is a common source of arguments. Commercial GPS taximeters
do not fit this market: they cost too much, draw too much
power, and depend on cellular data that many drivers cannot
afford. This paper presents a low-cost fare meter built around
the ESP32-WROOM microcontroller that runs fully offline. The
system measures distance from wheel rotation using an FC-03
optocoupler sensor read through a hardware interrupt, converts
pulse counts to distance with a calibration constant, and computes
the fare from a rate structure based on the government-notified
auto-rickshaw tariff. An L298N motor driver moves the prototype
chassis, an LM016L LCD shows the running distance and fare
to both driver and passenger, and a battery pack with a TP4056
charger and an LM2596S buck converter powers the unit. A
three-state controller (IDLE, ACTIVE, TRIP END) manages the
trip cycle and returns the meter to its starting state after each
trip. The fare model implemented in firmware follows a 20 tk
minimum with a 12 tk/km rate and rounds the display to the
nearest 5 tk, which matches how fares are actually settled on the
street. The prototype demonstrated stable pulse counting, correct
motor control, consistent power delivery, and a fare display that
tracked the measured distance during operation.

A Vision Transformer-Based Culturally Contextualized Bangla Image Captioning

Vision-Language Models (VLMs) have advanced rapidly for high-resource languages such as English, yet Bengali remains severely underserved in multimodal AI research. This paper presents a culturally grounded hybrid Bengali image captioning system built upon BanglaVision45K, a dataset of 45,000 images paired with 225,000 human-verified Bengali captions
(five per image), assembled from four complementary sources:
Flickr30k (translated via Google Translate), BNature, Bornon,
and a custom collection of 4,000 manually annotated Bangladeshi
cultural images. One-third of the dataset (33.33%, approximately
15,000 images) represents native Bangladeshi cultural contexts.
The corpus contains 46,499 unique Bengali tokens with an
average caption length of 9.53 words. We propose a novel hybrid
architecture combining a frozen SigLIP2 Vision Transformer
encoder (layers 1–8 frozen, layers 9–12 trainable, patch size 32)
with a custom hybrid decoder integrating 4-layer LSTM, 4-layer
GRU, and BanglaGPT, connected through a Luong multiplicative
attention-based fusion mechanism. Through systematic bench-
marking of eight architectures, SigLIP2 + Att-GRU Ex achieves
the best ablation efficiency-performance trade-off (BLEU-1:
0.5360, METEOR: 0.3821, ROUGE-L: 0.4631, CIDEr: 0.2205).
Our proposed final hybrid model (SigLIP2 + LSTM + GRU +
BanglaGPT) trained on the full BanglaVision45K (90/5/5 split)
achieves state-of-the-art performance: BLEU-1: 0.8356, BLEU-
2: 0.7219, BLEU-3: 0.6119, BLEU-4: 0.5194, METEOR: 0.7004,
ROUGE-L: 0.7414, CIDEr: 0.5287, outperforming all baselines
by over 15% across all metrics.

Blockchain-Based Remittance System with Mobile Wallet Integration in Bangladesh

This research contributes a practical blockchain-based remittance framework, RemittancePay, designed specifically for the Bangladesh financial ecosystem by integrating Ethereum smart contracts with Mobile Financial Services. Unlike previous conceptual studies, this work develops and evaluates a functional prototype that supports user registration, identity verification, fund transfer, and withdrawal through secure smart contracts. The study also provides an experimental evaluation of transaction speed, API latency, throughput, and reliability, demonstrating a 100% transaction success rate and improved transparency compared to traditional remittance systems. Additionally, the proposed architecture creates a pathway for future integration with platforms such as bKash and Nagad while identifying key challenges related to scalability, regulation, and real-world deployment.

An Ethereum and IPFS Prototype for Bangladesh’s Universal Pension Scheme: Design, Cost Analysis, and Feasibility Limits

This research makes several significant contributions to blockchain-based pension management. First, it develops a smart contract architecture that reflects key features of the Bangladeshi pension system, including government and contributory schemes, tier-based contributions, minimum contribution periods, service-based gratuity, and relationship-based survivor benefits. Second, it proposes and evaluates a hybrid Ethereum–IPFS design and compares its public-chain trust model with the permissioned consortium blockchain used in earlier Bangladeshi research. The study also provides a detailed gas and fiat cost analysis, showing that Ethereum mainnet transaction costs may be approximately 2.9 times higher than the contribution being recorded, making direct mainnet deployment economically impractical. Security was assessed through Slither-based static analysis and manual review, with all 56 findings documented and prioritized. Two important vulnerabilities identified in the developed code were corrected and covered by regression tests. In addition, a 33-case automated test suite was created to validate the complete pension life cycle and access-control rules. Finally, the research examines the practical conflict between blockchain immutability and the legal requirement to correct errors in official pension records.

Pathways to Environmental Sustainability: How Green Ambidexterity and Green HRM Flexibility Shape the Leather Goods and Footwear Sector in Bangladesh

Theoretically, the study advances dynamic capabilities theory to the green human-resource domain by conceptualizing organizational green ambidexterity as a dynamic capability that is activated through people rather than in the abstract. Its main contribution is to identify green HRM flexibility as the human resource mechanism by which an ambidextrous green behavior is transmitted to environmental sustainability. The study adds to the literature contextually by combining green ambidexterity, HR flexibility and digital capability in the leather goods and footwear industry, a compliance-sensitive and export-dependent industry that is under-researched despite its environmental stakes in Bangladesh. Results of this study will bring immense connotations towards the employees, industry experts, environmental advocates, policy makers and managerial bodies to take decisions and implications towards attaining environmental sustainability.

Adaptive Extended Kalman Filtering with LSTM-Based Signal Quality Assessment for GNSS Precise Point Positioning

Multipath and non-line-of-sight (NLOS) signal reception remain major error sources in Global Navigation Satellite System (GNSS) Precise Point Positioning (PPP), particularly in urban environments where satellite signals are frequently reflected, diffracted, or obstructed. This paper presents a Long Short-Term Memory (LSTM)-based multipath detection and adaptive Extended Kalman Filter (EKF) weighting framework to improve PPP positioning accuracy. A scenario-based multi-constellation GNSS observation dataset is developed to model line-of-sight (LOS), multipath, and NLOS signal conditions under varying environmental scenarios. From each GNSS observation, six multipath-sensitive features are extracted: signal-to-noise ratio (SNR), elevation angle, code residual, ionospheric delay, delta code-minus-carrier (∆CMC), and code rate consistency (CRC). The extracted features are arranged into temporal sequences and processed by an LSTM network to estimate LOS, multipath, and NLOS probabilities. These probabilities are converted into a signal quality score and used to adaptively modify the observation covariance in a simplified PPP/EKF positioning framework. The proposed method is evaluated against a standard EKF using fixed measurement covariance. Simulation results show that the LSTM-adaptive EKF approach reduces horizontal RMSE from 4.211 m to 2.106 m and 3D RMSE from 8.362 m to 4.090 m, corresponding to improvements of 50.00\% and 51.09\%, respectively. The results indicate that temporal deep learning can provide useful observation-quality information for multipath-aware adaptive weighting in GNSS PPP.

A Silver-tongued Writer: A Deep Learning and NLP based Bengali Sentence Composer for Politeness Transfer

The key contributions of this research are as follows:
• We construct a labeled Bengali politeness classification dataset of 12,300 comments (three-annotator majority voting), derived from a larger public Bengali comment corpus.

• We conduct a systematic comparison of three deep learning architectures and six transformer variants for Bengali politeness classification, showing that BanglaBERT achieves the best accuracy, precision, recall, and F1-score (all 84%) among all models tested.

• We construct one of the first manually curated Bengali impolite lexicons (410 entries) and integrate it into a complete classify–substitute–paraphrase pipeline that converts impolite Bengali sentences into polite, meaning-preserving equivalents.

Performance Optimization of a 3 GHz Double Inset Fed Microstrip Patch Antenna for Advanced Wireless Systems

Wireless technologies are changing so fast that highly efficient, compact and economic radiating elements become a necessity. The demands of these technologies are ideally met by microstrip patch antennas (MPAs) for their planar structure and ease of integration. This paper presents the design and optimization of a double inset-feed technique for designing an MPA, which is applied for a modern wireless communication of resonant frequency 3 GHz. The FR-4 substrate is 1.3 mm thick and the conductive layers are made of copper. The parametric sweeps of the inset feed dimensions resulted in a remarkably low return loss of -31.605 dB and an almost perfect Voltage Standing Wave Ratio (VSWR) of 1.05 at the frequency of 3.061 GHz. Furthermore, it was also observed that there is a significant impedance bandwidth of 2.158 GHz at cut off frequency of 3.058 GHz. The comparative study indicates that the proposed design has better impedance matching and bandwidth compared to the existing work. Therefore it is an excellent design for 4G, 5G, Internet of Things (IoT) infrastructure and radar system.

A Rigorous Cross-Dataset Benchmark of Gradient Boosted Decision Trees for Network Intrusion Detection Under Bayesian Hyperparameter Optimisation

Presents a rigorous cross-dataset benchmark of Gradient Boosted Decision Tree models for network intrusion detection, demonstrating the effectiveness of Bayesian hyperparameter optimisation in improving detection performance, robustness, and generalisation across diverse intrusion datasets.

AIDE-Score: A NIST AI RMF-Aligned Multi-Dimensional Evaluation Framework for Enterprise AI-Based Intrusion Detection Systems

This research introduces AIDE-Score, a novel multi-dimensional evaluation framework for enterprise AI-based Intrusion Detection Systems (IDS) aligned with the NIST AI Risk Management Framework (AI RMF). The framework extends traditional performance metrics by incorporating explainability, robustness, fairness, security, and governance into a unified assessment methodology. AIDE-Score provides organizations with a practical and standardized approach for evaluating the trustworthiness and operational readiness of AI-driven IDS in enterprise environments.

An Explainable Meta-Ensemble Framework for Leakage-Free Active Tuberculosis Diagnosis in High-Dimensional Transcriptomics

Tuberculosis (TB) remains a leading infectious cause of death, and host blood transcriptomics offers a non-invasive route to detecting active disease. Applying machine learning here is hard because the genes measured vastly outnumber the patients (n≪p), inviting overfitting, and because many pipelines select biomarkers on the full dataset before splitting, leaking test information and inflating mean accuracy. We present a zero-leakage, explainable meta-ensemble for active-TB diagnosis in which every data-dependent step, standardization, ANOVA biomarker purification, and SMOTE balancing, is confined inside the training folds of a stratified 10-fold cross-validation, so the reported metrics reflect genuinely unseen patients. The classifier is a soft-voting ensemble pairing LightGBM, a sequential gradient booster, with an Extra-Trees classifier that shields against high-dimensional noise. Under this protocol, it reaches a stable 95.03% mean accuracy (ROC-AUC 0.9884). Game-theoretic SHAP analysis shows that the decision is driven by immunological markers, the HLA and MHC genes, rather than noise. The top 76 SHAP ranked genes were then analysed through pathway and Gene Ontology enrichment, protein–protein interaction (PPI) and hub gene analysis, transcription-factor and microRNA inference, and drug–protein mining, anchoring the panel to antigen processing and presentation, with HLA-A/B/C and TAPBP as central hubs. The study shows how a disciplined, interpretable pipeline turns high-dimensional TB transcriptomics into trustworthy predictions and biologically grounded biomarkers.

A Systematic framework for optimizing kidney stone detection in low data medical setting

n medical imaging, kidney stone detection is a
crucial task where precise and effective identification may have a
big impact on patient treatment. The lack of annotated medical
datasets and their expensive cost frequently restrict the use of
traditional supervised algorithms. In order to increase perfor-
mance and resilience in a low-data setting, this research explores
the combination of revolutionary YOLO detectors with self-
supervised learning (SSL) methods. Using a single-class kidney
stone dataset, we assess YOLOv10, YOLOv11, and YOLOv12 as
baseline models. With a test mAP@0.5 of 0.7170, we find that
YOLOv11 is the better baseline. Next, using the same dataset, we
pretrain the YOLOv11 backbone using three SSL frameworks:
SimCLR, BYOL and DINO. In particular, the test mAP@0.5
is improved to 0.7734 and mAP@0.5:0.95 to 0.3571 by DINO
pretraining, indicating improved localization accuracy. This study
also presents an end-to-end real-time vision transformer called
RF-DETR Nano. RF-DETR Nano achieves a validation mAP@0.5
of 0.7561 and a peak test mAP@0.5 of 0.8132 by avoiding
conventional Non-Maximum Suppression (NMS) and utilizing
receptive-field attention. This work demonstrates that SSL and
transformer-based detection heads offers a strong method for
enhancing object recognition in medical imaging, providing a
reliable solution in situations when there is a shortage of labeled
data.

A Phase-Wise Machine Learning-based Performance Evaluation in Flight Simulation Training

Flight training is the crucial part of aviation industry. This study advances the field of flight training by combining tolerance-based performance labelling with machine learning classification to classify the pilot student performance in different phases of flight. The main contribution of the study is that it allows the flight instructor to give meaningful feedback, tailor remedial instruction, and make better decisions about pilot student performance and progression. Moreover, this study promotes the application of machine learning models in aviation education and highlights their significance in resolving the difficulties related to pilot training.

A Synchronization-Aware Deep Reinforcement Learning Framework for QoE-Optimized Mulsemedia Streaming

Immersive smart environments and Metaverse-oriented applications increasingly rely on the synchronized delivery of heterogeneous multimedia streams, particularly video and haptic feedback, over bandwidth-varying networks. Existing Dynamic Adaptive Streaming over HTTP (DASH) and Adaptive Bitrate (ABR) algorithms are primarily designed for single-stream video and generally lack mechanisms to explicitly address cross-modal synchronization drift, which can significantly degrade temporal coherence despite high video quality. This paper investigates a joint video–haptic adaptation framework to maximize overall Quality of Experience (QoE) while preserving synchronization between modalities. The adaptation problem is formulated as a Markov Decision Process (MDP) and optimized using a Proximal Policy Optimization (PPO)-based reinforcement learning policy that selects paired video and haptic representations for each streaming segment. A unified reward function is designed to maximize bitrate utility while penalizing rebuffering events, quality fluctuations, and synchronization drift. Performance is evaluated through trace-driven DASH simulations using real-world network throughput traces and compared with established baseline algorithms, including BOLA and Model Predictive Control (MPC). Experimental results demonstrate that the proposed approach effectively balances visual quality and temporal coherence, achieving an average video bitrate of approximately 2054 kbps while reducing synchronization drift to 22.57 ms, outperforming conventional video-centric adaptation strategies. These findings highlight the importance of drift-aware adaptive streaming and demonstrate the potential of reinforcement learning for delivering synchronized multisensory experiences in future immersive communication systems.

Machine Learning–Driven Single-Cell RNA-Seq Analysis for Cell Classification, Feature Discovery, and Functional Annotation in Glioblastoma

Abstract—In computational biology, machine learning is now
essential to the analysis of massive transcriptome datasets. Singlecell RNA sequencing (scRNA-Seq) can be used to study glioblastoma multiforme (GBM), the most prevalent and deadly adult
brain tumour, cell by cell. We developed a repeatable, leakagecontrolled machine learning workflow using the GSE84465
dataset (3,589 cells) to categorise each cell according to its surgical origin (tumour core vs. infiltrating periphery) and determine
the genes that differentiate the two compartments.XGBoost, Logistic Regression, Random Forest, AdaBoost, SVM, LightGBM,
Extra Trees, a Neural Network, and a Stacking Ensemble were
the nine classifiers that were assessed. XGBoost was the most
stable under stratified five-fold cross-validation (0.949 ± 0.007),
with held-out accuracy ranging from 0.92 to 0.95 (ROC-AUC
up to 0.993). Immune and microenvironmental factors (e.g.,
CCL3, MIF, ANXA1/ANXA2, HLA-B, VIM) were enriched in
the top 100 XGBoost-ranked genes. Twenty enriched pathways,
twenty hub genes, and fifteen potential medications were obtained
through downstream pathway/GO enrichment, PPI and hub-gene
analysis, TF/miRNA inference, and drug-protein mining. Overall,
the study demonstrates how interpretable machine learning can
transform GBM scRNA-Seq data into prioritised therapeutic
targets and biologically grounded biomarkers.

Four microRNAs as Prognostic Biomarkers for Overall Survival in Uterine Carcinosarcoma

Abstract—Uterine carcinosarcoma (UCS) is a rare, biphasic,
and highly aggressive gynecologic malignancy with disproportionately poor prognosis. Although microRNAs (miRNAs) regulate
tumorigenesis across many cancers, their prognostic role in
UCS remains largely undefined, owing to the rarity of the
disease and the scarcity of matched expression-plus-survival
cohorts. We sought to derive and internally validate an miRNAbased prognostic signature for overall survival in UCS using
public data. miRNA and mRNA expression and clinical data
for 55 UCS patients (34 deaths, 62%) were obtained from The
Cancer Genome Atlas (TCGA). As weighted correlation network
analysis identified no survival-associated module, we adopted a
direct approach: univariate Cox regression screened survivalassociated miRNAs, and a signature was built by LASSO Cox
regression with the number of miRNAs optimized by repeated
cross-validation. A four-miRNA signature (hsa-miR-1249, hsamiR-1287, hsa-miR-30d, hsa-miR-330) was identified. High-risk
patients had significantly shorter overall survival than low-risk
patients (log-rank P = 6.67 × 10−5). Time-dependent AUCs
were 0.79, 0.74, and 0.76 at 1, 2, and 3 years; repeated 70/30
cross-validation gave a more conservative mean test AUC of 0.69
(95% range 0.41–0.84). The risk score remained an independent
prognostic factor after adjustment for age and stage (hazard ratio
= 2.72, P = 1.67×10−6). Enrichment of correlated target genes
highlighted hypoxia and peptide-hormone responses. This compact signature provides moderate, independent prognostic value
for UCS and may serve as a hypothesis-generating biomarker;
given the small single-cohort sample, external and experimental
validation are required.

Heterogeneous Relation-Aware Attention Improves Cold-Start miRNA–Disease Association Prediction

Abstract—Predicting associations between microRNAs (miRNAs) and diseases helps prioritise candidates for experimental
study. Most graph-learning approaches are evaluated solely
in the transductive context, where every miRNA already has
known associations. The tougher and more practically relevant cold-start setting, predicting associations for miRNAs with
no prior relationships, is rarely investigated. We study how
architectural complexity behaves across both settings on the
HMDD benchmark. We propose HetSeqFormer, a spectral graph
Transformer with heterogeneous relation-aware attention over
an association graph augmented with sequence-based miRNA–
miRNA and disease–disease similarity networks, and a learned
sequence branch. Under a leakage-free protocol we find that
the value of heterogeneity is strongly setting-dependent. In
the transductive setting it does not help: inductive baselines
(GraphSAGE, a graph Transformer) lead and a streamlined
variant of our model only matches DARSFormer. In the coldstart setting the ranking inverts: HetSeqFormer ranks first and
significantly outperforms six of seven baselines (all but GCN,
which it ties on AUC and leads on F1, 0.841 vs. 0.840), while
the transductive leaders GraphSAGE and the graph Transformer
fall to last. Ablations confirm that relation-aware attention—not
the sequence branch—drives the cold-start gain, by propagating
information through the similarity networks to association-free
miRNAs. These results identify when heterogeneity helps in
miRNA–disease prediction and highlight cold-start as the setting
where it matters.

Predecting Sustainable Boycott Intentions through Digital Eco-Activism:SEM & Machine Learning Approach

The present work develops a predictive empirical technique for mapping the behavioral and system architecture of digital marketplace resistance against tech providers. Based on the structural framework of the Theory of Planned Behavior (TPB) and Institutional Anomie Theory, the proposed paradigm models the spread of corporate product-sustainability failures (PSF) – from environmental misconduct to ethical exploitation and economic green washing – as demand-side consumer shocks among hyper-connected Gen Z cohorts. The objective of this study is to provide a two-step analytical approach to unveil the determinants of durable boycott intentions, forecast consumers’ boycott decisions correctly, and thus bridge the conventional intention–behavior gap. This framework combines a variance-based Structural Equation Modelling (SEM) approach to disentangle complex internal mediating mechanisms (value misalignment and eco-ethical outrage) and upper boundary moderation filters (fractured trust filters) with downstream machine learning classification models (SVM, Random Forest) to predict definitive binary anti-consumption choices. The Paper allows multi-product high-tech firms to evaluate market risks and demonstrate that long-term brand equity depends on transparency, sustainable product lifecycles, and real corporate responsibility. This study promotes SDGs 12, 16 and 9 by supporting responsible consumerism, ethical corporate governance and predictive sustainability analytics via an integrated SEM-machine learning framework.

A Multi-View Sequence–Ensemble Fusion Model for Predicting Cancer-Associated microRNA–Gene Interactions

Abstract—microRNAs (miRNAs) are short non-coding RNAs
that post-transcriptionally regulate target genes and are strongly
implicated in oncogenesis. Determining whether a given miRNA–
gene interaction operates in a cancer or a non-cancer disease
context is valuable for prioritising candidates in functional
studies, yet it is non-trivial because the same miRNA frequently
participates in both settings. We study a curated dataset of
3,666 miRNA-gene-disease associations (2,004 cancer; 1,662 noncancer) and first show that the disease-name field is a definitional
label proxy that trivialises the task (accuracy 99.8%, ROC-AUC
1.000) without conferring any biological insight. We therefore
reformulate the problem as predicting cancer association from
molecular features only: the miRNA identity, its mature nucleotide
sequence, and the target gene. We propose mSEF (Multiview Sequence–Ensemble Fusion), which couples (i) a leakageaware task formulation, (ii) a multi-view feature representation
combining a k-mer sequence spectrum, engineered nucleotidecomposition descriptors, miRNA-family attributes, and crossfitted target encodings of high-cardinality categoricals, with (iii)
a weighted heterogeneous soft-voting ensemble of extremely randomised trees, a random forest, and histogram gradient boosting.
Under stratified 5-fold cross-validation, mSEF attains 90.6%
accuracy, 0.915 F1, 0.967 ROC-AUC, and 0.811 Matthews correlation coefficient (MCC), outperforming nine standard baselines,
and reaches 91.0% accuracy with 0.969 ROC-AUC on a held-out
test set. Under a stricter grouped protocol that withholds entire
miRNAs or genes, accuracy remains 80–83% (ROC-AUC 0.87–
0.92), quantifying generalization to unseen molecules. Ablation
shows that all three feature views contribute and that their fusion
is necessary for the best result. The study illustrates how careful
leakage control turns an apparently trivial classification problem
into a meaningful, sequence-driven prediction task.

Comparative Analysis of LASSO and RFE for ML-Based Hypertension Risk Prediction Framework

Hypertension constitutes a major worldwide health concern that can result in cardiovascular disease, cerebrovascular accidents, kidney failure, and early death. Hypertension represents a significant global health issue that frequently occurs asymptomatically. This increases the likelihood of patients experiencing significant cardiovascular problems. Anticipatory forecasting of events is essential for prompt reaction and effective management. This study presents a hybrid framework designed for predicting hypertension, utilising the High-Fidelity Synthetic Dataset for Hypertension Prediction. This work implements and compares two feature selection methods Least Absolute Shrinkage and Selection Operator (LASSO) and Recursive Feature Elimination (RFE), for optimized feature selection which leads to better forecast of hypertension. The selected features are then fed into five different machine learning models XGBoost, SVM, Random Forest, MLP and CatBoost for training and testing and analysis purpose. An extensive analysis is done on both the frameworks LASOO + ML models and RFE + ML models including exploratory data analysis, computation of various standard matrices, calibration analysis and explainable AI analysis. All these results indicate that LASOO + XGB model outperform every other integrated model by achieving 98.56% accuracy. The best performance model LASOO + XGB is also compared with the other similar work, where it also outperforms. From all the analysis done we can conclude that the proposed model aims to enhance and helps the healthcare providers in hypertension risk prediction.

Sustainable Urban Transportation: A Triple Bottom Line Assessment of the Dhaka Metro Rail System

The rapid urbanization and increasing demand for transport in Bangladesh have exacerbated issues of traffic congestion, environmental degradation, and sustainable urban mobility. Dhaka Metro Rail, the country’s first mass rapid transit system, is an essential initiative in overcoming such challenges and encouraging sustainable travel. However, earlier studies have largely focused on individual sustainability criteria and have used quantitative techniques, which limits a comprehensive knowledge of metro rail sustainability. Therefore, the objective of this study is to explore the contribution of metro rail services to the sustainability of Bangladesh by using the Triple Bottom Line (TBL) paradigm which incorporates environmental, economic and social aspects. A mixed methods study design might be utilized to achieve this purpose. Qualitative data will be collected through in-depth interviews with key stakeholders using purposive sampling and analyzed using content analysis. Quantitative data will be obtained using a structured questionnaire survey of metro train users using convenience sampling and analyzed using Structural Equation Modelling (SEM). Through a sustainability assessment of the Dhaka Metro Rail System, this study contributes to SDG 11 (Sustainable Cities and Communities), SDG 9 (Industry, Innovation and Infrastructure), SDG 13 (Climate Action) and SDG 8 (Decent Work and Economic Growth). The study is expected to give a complete assessment of metro rail sustainability, contribute to the literature on sustainable transportation, and provide practical insights to policymakers and transport authorities in developing sustainable urban transportation policies in Bangladesh.

Optimized EfficientNetB5 Framework for Skin Cancer Classification

The complex assortment of disorders in the human body known as cancer presents numerous difficulties for modern-day medicine. Its molecular mechanisms are so well understood for research advancements in many sectors. Immunotherapies and targeted therapeutics are quite potential for individualized treatments. To enhance early-stage detection and more effective treatments, research in healthcare must continue. In order to evaluate medical imaging data and precisely identify minor patterns indicative of nine types of skin cancer, this research proposes a conceptual framework for diagnosing many skin cancer lesions by utilizing the capabilities of CNN (i.e., Convolutional Neural Networks).Through the usage of the Adam optimizer, the EfficientNetB5 network designs and integrates various adaptive learning rates, allowing it to dynamically adapt and maximizes performance during training. The proposed model’s multi-layered architecture allows it to recognize minute characteristics at microscopic and macroscopic levels, ensuring a comprehension of possible existing cancers. For three hidden layers and output channels of 32, 54, and 128 respectively, the proposed model has the potential to greatly increase diagnosis accuracy and enable rapid treatments. With accuracy of 92.68% for 9 different forms of skin cancer in the dataset, the subsequent modelling assurances class balancing and augmentation using XGBoost classifiers, as it will train the images with better feature handling.

Comparative Evaluation of AI-Generated Text Detection Approaches

this study presents a comparative evaluation of three approaches for AI-generated text detection. Experimental results demonstrate that the RoBERTa model significantly outperforms all other models. The study concludes that deep contextual embeddings offer the most reliable solution for modern AI-text detection, while classical approaches remain effective for computationally constrained environments.

Decentralizing Dengue Diagnostics: Federated Knowledge Distillation Across Heterogeneous Modalities via Edge Transpilation

The escalating severity of Dengue fever outbreaks
in Bangladesh necessitates rapid, data-driven clinical diagnostic
tools. While recent machine learning architectures demonstrate
high predictive accuracy using clinical and meteorological data,
their reliance on centralized cloud infrastructure and heavy
Python backends introduces severe data privacy vulnerabilities and renders them impractical for low-bandwidth, rural
healthcare centers. This paper proposes a decentralized, privacypreserving mobile diagnostic framework utilizing Heterogeneous
Federated Transfer Learning (HFTL). To the best of our knowledge, this is the first federated framework for dengue detection to collaboratively synthesize three distinct data modalities:
haematological parameters, subjective symptomatic profiles, and
environmental indicators. Furthermore, we introduce a novel
edge-transpilation pipeline that mathematically converts trained
balanced Random Forest classifiers directly into zero-dependency,
native Dart code. This approach completely decouples diagnostic
inference from the cloud, enabling zero-latency, 100% offline
execution directly on mobile edge devices. Experimental evaluations confirm exceptional diagnostic performance, achieving
96.0% accuracy on structural symptom vectors and 76.4% on
haematological markers. By ensuring that sensitive patient health
data never leaves the local client device, this framework bridges
the critical gap between robust computational epidemiology
and secure, deployable digital health infrastructure in resourceconstrained environments.

Federated Deep Learning for Bidirectional English and American Sign Language Translation Across Distributed Deaf Communities

Communication barriers between Deaf and hearing individuals continue to limit accessibility across educational, healthcare, workplace, and community settings. Existing Artificial Intelligence (AI)-based translation systems often focus on isolated sign recognition and rely on centralized datasets with limited signer diversity. This paper presents a Federated Deep Learning (FDL) framework for bidirectional translation between spoken English and American Sign Language (ASL). The proposed system integrates computer vision, transformerbased neural machine translation, and federated learning to enable privacy-preserving collaborative model training across multiple institutions while accommodating regional and signerspecific ASL variations. The framework was evaluated using data collected from five collaborating institutions involving 412 participants and more than 68,000 annotated ASL video samples. Experimental results achieved translation accuracies of 91.3% for ASL-to-English and 88.7% for English-to-ASL translation. Compared with a centralized transformer baseline, the proposed federated model improved BLEU scores by 7.8% while enhancing generalization across signing communities. User evaluations involving Deaf educators and community members produced a System Usability Scale score of 86.4, indicating excellent usability. These findings demonstrate the potential of federated learning to support scalable, privacy-preserving ASL translation systems and improve accessibility technologies for Deaf communities.

Simulating Edge AI Interventions: An HCI Proof-of-Concept for Dynamic AR-HUD Decluttering Based on Physiological Monitoring

Advanced Driver Assistance Systems (ADAS) face competing demands among environmental perception, physiological monitoring, and cognitive overload. This paper proposes a sequential Edge AI software architecture capable of executing Traffic Sign Detection and Recognition (TSDR) alongside incabin biometric analysis. Deploying these models on constrained hardware introduces latency bottlenecks and resource contention. To evaluate the human-computer interaction (HCI) requirements of this system, we conducted a Hardware-in-the-Loop simulation using a Wizard of Oz methodology. Six participants navigated complex routes using a simulated Augmented Reality Head-Up Display (AR-HUD) and optical heart rate monitors. Empirical data indicate that static, data-dense interfaces induce cognitive saturation and navigational panic. By dynamically decluttering the AR-HUD during high-stress events, the system managed driver arousal and mitigated visual masking. These findings detail a closed-loop system design that balances Edge AI scheduling limitations with cognitive ergonomics.

NeuroCrypt: A Privacy-Preserving Federated Learning Framework for Secure Brain–Computer Interface Data Sharing

NeuroCrypt is a privacy-preserving federated learning framework for EEG-based Brain-Computer Interfaces. It combines on-device training, continuous Zero-Trust client authentication, and a lightweight tamper-evident audit ledger, enabling collaborative learning without sharing raw EEG data.

A Systematic Review of Technical Accuracy versus Social Utility in Assistive Technologies

This systematic review synthesizes evidence from 29 peer-reviewed studies published between 2008 and 2025 to evaluate the real-world effectiveness of assistive technologies for the Deaf and Hard-of-Hearing (DHH) community. Although recent advances in artificial intelligence, computer vision, and wearable sensing have produced recognition accuracies exceeding 90% under controlled laboratory conditions, substantial challenges remain in practical deployment. Using a tripartite effectiveness framework, the review found that only one technology was Currently Effective for real-world use, whereas 25 studies were classified as Effective with Further Development because of their dependence on controlled environments. The analysis also identified a significant communication imbalance: most technologies support one-way translation, while only three studies proposed truly bidirectional systems. Furthermore, limited participation of native Deaf signers in the design process often reduced usability and cultural acceptance. These findings highlight the need for user-centered, participatory design, long-term real-world evaluation, and bidirectional communication technologies to achieve meaningful accessibility and social inclusion.

An Explainable Deep Ensemble Framework for Bone Fracture Detection & Segmentation from X-ray Images with a Web-Based Interface

Key Contribution:
● Proposed a two-stage deep learning
approach for automatic detection and
segmentation of bone fractures based on
X-ray images.
● Combined and processed two Kaggle
X-ray datasets in order to get a balanced
dataset for bone fractures detection [7].
● Created a personalized segmented
dataset by doing manual annotation and
masks for fracture localization.
● Preprocessed and augmented the dataset
to increase the quality and
generalization of the deep learning
model [8].
● Used several deep learning models
(ResNet50, EfficientNetB3,
MobileNetV3, Xception, InceptionV3,
and DenseNet121) for detecting bone
fractures.
Designed a
Multi_Bone_Hybrid_DetModel based
on several most accurate detection
models to get better detection results.
● Used several U-Net-like segmentation
models and created a
Multi_Bone_Hybrid_SegModel to get
better fracture localization results.
● Added Grad-CAM for both detection
and segmentation models to improve
explainability and interpretation of the
model [9].
● Created a web-based application for
fracture detection, segmentation, and
visualization of Grad-CAM

Lip Reading from Images Using a Dual-Input 3D Convolutional Neural Network (DI-3DCNN)

The contribution of research in lip reading using deep
learning model named modified dual-input 3D Convolutional
Neural Network (3DCNN) is fundamentally transforming
communication accessibility for individuals with hearing
impairments. Additionally, we explore some models like as
3D Convolutional Neural Network (3D-CNN), 2D
Convolutional Neural Network with GRU, 2D Convolution
Neural Network with LSTM (2DCNN with LSTM) on our
dataset and evaluate the performance and finally compare the
performances with our proposed system

Device Optimization and Defect Analysis of Sr3BiCl3-Based Perovskite Solar Cells by SCAPS-1D

In this study, we conduct a thorough numerical analysis to examine the photovoltaic performance of Sr3BiCl3-based perovskite solar cells (PSCs) using the SCAPS-1D simulator. The study investigates the Ag/FTO/TiO2/Sr3BiCl3/MoO3/Ni device configuration, with the objective of assessing the impact of bulk and interface defect states on total device performance. The simulated device achieves a power conversion efficiency (PCE) of 27.56% when the Sr3BiCl3 absorber layer has a thickness of 1000 nm, a band gap of 1.541 eV, a defect density of 1014 cm-3, and a doping concentration of 1018 cm-3.

Radiological Metadata and Deep Image Feature Analysis for Breast Cancer Classification: An Explainable Multimodal Evaluation on CBIS-DDSM

Controlled multimodal ablation study

The study compares image only, clinical metadata only, and fusion models on the same CBIS DDSM data split. This setup measures the diagnostic value of each modality under equal conditions. The authors identify this type of controlled comparison as limited in earlier research.

Clinical metadata value

Radiologist defined features produce the highest performance. Mass shape, margin, assessment score, and subtlety reach a ROC AUC of 0.8737. This result exceeds both the image model and the fusion models. The finding shows clinical descriptors contribute more than deep image features in this dataset.

Feature dimension and fusion performance

The study evaluates image feature vectors with 64 and 1,280 dimensions. The larger feature vector reduces fusion performance because the model overfits the limited dataset. This result offers a practical lesson for multimodal medical AI projects with small datasets.

Grad CAM explainability

Grad CAM visualizations show the EfficientNet B0 model focuses on relevant lesion areas instead of background regions. These results support model interpretation and clinical confidence, even though the image only model achieves lower diagnostic performance.

Transparent negative finding

Simple feature concatenation fails to outperform the metadata only model. This negative result provides useful evidence for future research. Researchers should test attention based, gated, or other advanced fusion methods instead of assuming multimodal fusion will improve performance.

EE-MpoxLiteNet: An Edge-Enhanced Lightweight and Explainable Deep Learning Framework for Monkeypox Skin Lesion Screening

Deep learning-based Monkeypox (Mpox) skin lesion
screening offers a rapid and low-cost decision-support solution
for resource-constrained healthcare settings. However, existing
approaches often depend on limited datasets, computationally
intensive architectures, and augmentation procedures that may
introduce data leakage. This paper proposes EE-MpoxLiteNet,
a lightweight, edge-enhanced, and explainable framework for
Mpox skin lesion classification. A leakage-safe protocol first
partitions the original images into training, validation, and
test subsets before augmentation. The proposed Edge-Aware
Lesion Enhancement Module combines contrast-limited adap-
tive histogram equalization, bilateral filtering, and Sobel-based
structural information to improve lesion contrast and boundary
representation. A dual-stream architecture then captures com-
plementary appearance-based semantic and edge-guided mor-
phological features. These representations are refined through
a Multi-Scale Lesion Representation Block and a Cross-Branch
Attention Fusion Module before classification. Experiments on
the Monkeypox Skin Lesion Dataset show that EE-MpoxLiteNet
achieves 97.8% accuracy, a 97.8% F1-score, and a 99.4% ROC-
AUC, outperforming standard CNN baselines and heavier hybrid
models. The network contains 6.85 million parameters and
requires only 0.86 GFLOPs, demonstrating a favorable accuracy–
efficiency trade-off. Grad-CAM visualizations further show that
predictions are primarily based on lesion-relevant regions. These
findings support the potential of EE-MpoxLiteNet for efficient
and explainable AI-assisted Mpox screening.

Prevalence of Microplastics and Heavy Metals in Raw Milk from Municipal Waste-Fed Dairy Cow

Master’s Research

Crime Prediction Using Improved Hybrid Models Machine Learning Algorithm

Rising crime rates present a significant challenge to public safety and necessitate the development of reliable crime prediction models. This study investigates the application of machine learning techniques to real-world crime data for predicting future crime trends. Five regression models—Linear Regression, Gradient Boosting Regressor, Random Forest Regressor, Extra-Trees Regressor, and XGBRegressor—are evaluated and compared. To further improve predictive performance, a hybrid model is proposed by integrating the Extra-Trees Regressor and XGBRegressor through a voting-based ensemble strategy. Experimental findings show that the proposed hybrid model performs better than the individual models on the given dataset. The results demonstrate the potential of ensemblebased regression approaches for improving crime prediction and supporting data-driven decision-making in crime prevention.

Intelligent IoT-Driven Health Monitoring System for Real-Time Remote Patient Care and Early Disease Detection

The rise of chronic diseases and an aging population underscore the need for continuous and accessible healthcare monitoring, especially in remote areas. Traditional healthcare systems often face challenges such as lengthy diagnoses, inadequate treatment, and rising costs. To address these issues, this study presents an Internet of Things (IoT)-based real-time health monitoring system designed for proactive healthcare. We utilized various sensors to track essential health metrics—body temperature, heart rate, and oxygen saturation—transmitting the data to cloud platforms like Ubidots for analysis and visualization. Additionally, we developed a machine learning model to classify and predict heart disease using a separate dataset, enhancing diagnostic capabilities. The Blynk application facilitates remote access to this data, improving patient engagement and system accessibility. Furthermore, our system incorporates video surveillance through Ivideon to bolster telemedicine services, enabling immediate alerts for health abnormalities and allowing prompt interventions. This innovative approach significantly impacts the IoT and healthcare sectors, promoting early detection of health issues, encouraging proactive management, and reducing healthcare costs.

Deep Reinforcement Learning for Adaptive Bitrate Control in Rural Telemedicine Networks

In rural Bangladesh, weather-induced bandwidth volatility, monsoon induced fading, and peak hour congestion are all huge Quality-of-Service (QoS) issues with telemedicine video streaming over LTE networks. Static adaptive bitrate (ABR) heuristics fail under these non-stationary conditions, causing rebuffering events that disrupt clinical consultations. This paper proposes a deep reinforcement learning (DRL) framework for ABR control tailored to Bangladesh LTE, formulating the problem as a Markov Decision Process (MDP) with a sevendimensional state and a clinically calibrated Pensieve reward that heavily penalises rebuffering. A Proximal Policy Optimization (PPO) agent is trained on a 200-trace Gilbert-Elliott Markov channel dataset anchored to BTRC 2024 field measurements across five weather conditions and evaluated against DQN and four classical baselines. PPO achieves a mean per-step reward of +0.604 +/- 0.119, outperforming the best classical baseline by 37.3% and MPC-Heuristic by 61.5% (Wilcoxon p < 0.001, Cohen’s d = 1.10), while maintaining a stall ratio of 0.36%, well below the 2% clinical target, with consistent positive rewards across all weather conditions including adversarial Rain/Monsoon and Peak Hours scenarios where competing agents fail.

DFT Study on Y- and Ga-Doped Cs₃ScI₆: Structural, Electronic, and Optical Properties for Optoelectronic Applications

In this work, a complete density functional theory investigation of pristine, Y-doped, and Ga-doped Cs₃ScI₆ is presented, showing that dopant engineering effectively manipulates the band gap, electronic structure, and optical absorption of this compound. The enhanced absorption of visible light and electronic properties show that Y and Ga-doped Cs₃ScI₆ can be considered as promising lead-free perovskite materials for solar cell applications.

Advancements in Fast and Wireless Electric Vehicle Charging: Performance Trade-Offs, System Challenges, and Future Directions

Inductive charging and DC charging are increasingly becoming the preferred methods of charging an electric vehicle, with the latter being significantly quicker than the former. The type of charging impacts the degradation of batteries, battery efficiency, power grid carbon emissions, and overall environmental sustainability as part of the battery life. This study is based on several recent research papers from the year 2021 to 2026 on lithium ion, lead acid, lithium polymer and silicon-carbon batteries. Rapid charging causes aging of the battery due to lithium plating, solid electrolyte interphase (SEI) growth, and higher internal resistance especially when the SoC is above 80% or at temperatures below 15℃. When the coils are misaligned, the efficiency loss can range from 5-15% and there can be localized thermal hotspots. However, the constant low power charging can help mitigate cycle aging. The charging conditions also impact on grid emissions. Fast charging can account for as much as triple the CO₂ emitted per kWh as off-peak or solar-coordinated charging in coal-heavy power systems. The charging process can have an impact on the life of the battery and lead to the need for battery replacement, which can add to the impacts of the battery manufacturing process, typically overlooked in a conventional LCA. A causal relationship between charging methods and thermal and electrochemical stresses, battery degradation, efficiency losses, grid level effects, and battery life. Solutions are described as being: – temperature responsive fast charging, – misalignment tolerant wireless charging, – demand responsive charging scheduling. To enable sustainable electric mobility, further research based on real-world charging data, long-term wireless-aging research, and resulting lifecycle assessments is needed.

AI-Driven Renewable Energy Forecasting and Smart Grid Optimization for Energy Transition in Bangladesh

This study is among the first to build and evaluate an end-to-end AI-driven renewable energy forecasting + smart grid optimization framework specifically for Bangladesh’s energy context — a low-resource setting largely absent from the existing ML forecasting literature (which is dominated by developed-country studies).

Key contributions:

Comparative model evaluation — benchmarks five forecasting approaches (Random Forest, ANN, SVR, Linear Regression, ARIMA) on a 5-year, 43,800-instance dataset combining NASA POWER, BMD, and BPDB data; Random Forest wins with 92.4% accuracy, a 57% MAE improvement over the ARIMA baseline.
Localized feature engineering pipeline — tailored to Bangladesh’s meteorological and grid conditions (cyclical time encodings, rolling lag features).
Quantified smart grid gains — demonstrates concrete operational impact when AI forecasting drives dispatch: +31% grid stability, −68% renewable curtailment, −36% CO₂ intensity, forecast horizon extended from 1 to 24 hours.
Practical deployment roadmap — translates the technical results into a policy-relevant argument (e.g., ~4.2M tonnes CO₂ avoided/year at scale), directly tied to Bangladesh’s 2041 Mujib Climate Prosperity Plan target of 40% renewables.

The core novelty is less “a new algorithm” and more rigorous, quantitative evidence — in an underexplored geographic context — that pairing AI forecasting with grid optimization unlocks large, measurable gains, giving policymakers and grid operators a concrete case for investing in digital infrastructure alongside physical renewable capacity.

A Domain-Invariant Multi-Scale Graph Temporal Learning for Cross-Environment Wi-Fi Deauthentication Detection

The study introduces GraphBurst-InvarNet, a leakage-resistant framework that combines dual-scale temporal learning, dynamic AP–client graph modelling, adaptive structural gating, and domain-adversarial training using hybrid dataset. Its main contribution is improved cross-environment detection of sparse-to-flood Wi-Fi deauthentication attacks, achieving 97.85% external Macro-F1 with only 0.38% false positives on an unseen dataset.

Dynamic Wireless EV Charging Under Misalignment: A Study of Mitigation Technologies, Key Challenges, and Future Prospects

The dynamic wireless power transfer (DWPT) system is a technology that allows an EV to take in electrical energy while it is moving on energized sections of the roadway. This can minimize charging time interruptions and increase the driving range for vehicles, as well as enable high-use vehicle fleets to have a smaller traction battery. The operation of a DWPT system is, however, very sensitive to the relative position of the roadway transmitter and the receiver on the vehicle. Mutual inductance and reflected impedance may be changed by lateral displacement, movement of the transmitter segments, changes in ground clearance and angular misalignment. The changes can lead to resonance detuning, power fluctuation, higher stress on the power converter, as well as different leakage magnetic fields. This paper summarizes the progress in misalignment-tolerant DWPT systems in recent years, focusing on magnetic coupler structures, compensation networks, control techniques and standardization. It is possible to increase the coupling area using DD-type and quadrature couplers, and to enhance the robustness against the variations of the coupling, using a compensation network based on the LCC. Phase-shift control, predictive control and magnetic-field-shaping methods can be used to further improve operational stability. Past research indicates that the best systems utilize a combination of coupling-aware control and passive compensation and active regulation, not just one of the two mitigation strategies. The latest standards cover safety and interoperability of dynamic charging systems; SAE J2954 provides a reference for stationary wireless charging. There are still some key research needs to be addressed for cross-vendor dynamic testing, power quality during segment changes, foreign object detection, roadway durability, and bi-directional power transmission.

Design and Implementation of a Resilient Multi-Branch WAN for Sonali Bank PLC: EIGRP Routing, Dual-ISP Redundancy, and Hierarchical IP Addressing

Modern banking operations depend on a wide-area network (WAN) that is simultaneously highly available, secure, and capable of scaling to thousands of geographically dispersed branches. This paper presents the design and packet-level implementation of a resilient enterprise WAN interconnecting a Head Office (HO), a primary Data Center (DC), a Near/Disaster-recovery Data Center (NDC), and re-
mote branches through a mesh of five Internet Service Provider (ISP) edge routers. The control plane uses the Enhanced Interior Gateway Routing Protocol (EIGRP, AS 100) for fast con-vergence and unequal-cost load balancing over redundant /30
links, and every site is dual-homed to two independent ISP
routers to eliminate single points of failure. Security is enforced at each data-center edge with Cisco Adaptive Security Appliance (ASA) firewalls using asymmetric security levels and stateful inspection. A hierarchical IPv4 plan of contiguous /21 blocks from 10.0.0.0/8 yields more than 1,230 branch subnets of 2,046 usable hosts each while preserving route summarization. Emulation in Cisco Packet Tracer confirms full reachability, sub-second recon-vergence after link failure, and correct fire- wall policy enforcement, demonstrating that the architecture meets the availability, segmentation, and scalability requirements of a national-scale banking network.

Picture Fuzzy Aggregating Operators in Soft Computing

Several picture fuzzy aggregating operators have been developed to find out the best outcome of multi-attribute decision making problem (MADM) with the light of soft computing.

Performance and Explainability of Modern Deep Learning Models for Brain Tumor MRI Segmentation

Brain tumor segmentation from magnetic resonance imaging (MRI) is essential for accurate diagnosis, treatment planning, and disease monitoring. While convolutional neural networks (CNNs) have achieved remarkable success in this task, recent Transformer and Mamba-based architectures have emerged as promising alternatives. However, their effectiveness and interpretability for brain tumor segmentation remain under-explored. This paper presents a comprehensive comparative study of modern deep learning models, including U-Net, Attention U-Net, DeepLabV3+, encoder-based U-Net variants, TransUNet, Simplified Mamba U-Net, and Mamba U-Net, using a publicly available brain MRI dataset. Performance is evaluated using Dice, IoU, Precision, Recall, F1-score, Pixel Accuracy, ROC-AUC, model complexity, inference latency, and model size. In addition, Explainable Artificial Intelligence (XAI) techniques are employed to visualize and compare model decision-making behavior. Experimental results show that lightweight CNN-based architectures, particularly EfficientNet-B0 U-Net, achieve the best balance between segmentation accuracy and computational efficiency, while Transformer and Mamba-based models offer competitive performance. The XAI analysis further highlights differences in feature localization across architectures, providing valuable insights into model reliability and supporting informed model selection for brain tumor MRI segmentation.

What Actually Drives Profit in Telecom Churn Retention: Profit-Aligned Targeting versus Accuracy and Calibration

This paper presents a controlled, significance-tested decomposition of a telecom customer-churn retention pipeline, isolating which components actually improve realised profit rather than accuracy. Using two independent telecom datasets and bootstrap confidence intervals, we show that aligning the targeting decision with profit yields a large, statistically significant gain over accuracy-optimal thresholding (+13.1 percentage points of profit capture on Maven Telecom), while widely used techniques—class re-sampling and probability calibration—add no statistically significant profit once this is done. We further show that re-sampling harms probability calibration without improving ranking, and we honestly delimit the conditions under which profit-aligned targeting does and does not help.

A Low-Cost, Low-Latency IoT-RFID Attendance System with Real-Time Cloud Synchronization: Design and Field Evaluation

This study showcases an affordable IoT-based RFID attendance solution featuring real-time cloud synchronization through an ESP8266 NodeMCU, MFRC522 RFID reader, and a serverless Google Apps Script–Google Sheets setup. The suggested system attains an average end-to-end latency of 0.92 seconds, concurrently eliminating ongoing communication expenses and specific database upkeep. A thorough multi-user field assessment offers an accurate evaluation of deployment dependability in educational settings.

From Silence to Surge: Modeling Zero-Inflated Dengue Outbreaks in Bangladesh
The Simulator Gap: Benchmarking Facial Landmark Detection from Scratch
A RepVGG-Style Regional Token Transformer for Grape Leaf Disease Classification

The major contributions of this work are as follows. First, we propose a novel hybrid grape leaf disease classification framework that integrates a RepVGG-style multi-branch convolutional backbone with a Transformer encoder, enabling effective learning of both local disease characteristics and global contextual relationships. Second, we introduce a regional token learning strategy that transforms the final 7×7 convolutional feature map into 49 high-level semantic regional tokens, rather than directly tokenizing raw image patches, thereby providing more informative representations for Transformer-based feature learning. Third, multi-head self-attention is employed to capture long-range dependencies among lesions, venation patterns, disease boundaries, and surrounding leaf tissues, improving discrimination between visually similar grape leaf diseases. Finally, extensive experimental evaluations demonstrate the effectiveness of the proposed framework, while Grad-CAM visualizations verify that the model focuses on biologically meaningful disease regions, enhancing both classification performance and model interpretability.

Greenhouse Gas Impact on Human Welfare in Bangladesh: In Search for SDG 13

This study makes a meaningful research contribution by linking environmental pressure from greenhouse gas (GHG) emissions to population health outcomes in Bangladesh over a long historical horizon (1975–2023). Specifically, it contributes in three main ways:Country-specific, long-run evidence on GHG–health linkages, Use of an integrated econometric framework to capture long-run relationships and dynamics, New insight into causality patterns, especially the CO₂–life expectancy feedback

Sustainable EdTech for Educational Equity: Evidence from the 10-Minute School Digital Learning Platform in Bangladesh

This study contributes to sustainable EdTech research by developing a Dual-Sided Equity Model that explains how digital learning platforms can simultaneously expand educational opportunities and reproduce structural inequalities. It introduces the concept of Conditional Educational Equity, arguing that digital access alone does not ensure equitable outcomes; learners must also have the capability to participate meaningfully and benefit from digital learning. By integrating platform affordances, structural digital divides, and PESTEL conditions, the study provides a context-sensitive framework for evaluating the sustainability and human impact of EdTech in Bangladesh and similar developing contexts.

Automated Eggplant Disease Detection Using Feature Fusion Based CNN with Explainable AI for Precision Agriculture

Automated and accurate detection of eggplant leaf diseases is crucial for improving yield and reducing economic loss, especially for smallholder farmers who lack timely access to expert diagnosis. However, existing vision-based systems often rely on a single deep model and operate as black boxes, which may struggle with complex visual symptoms, class imbalance, subtle inter-class variability, and a lack of interpretability for agronomists and farmers. To address these limitations, this study first conducts a comprehensive benchmark of 12 popular transfer learning architectures (VGG16, VGG19, ResNet50, ResNet152, DenseNet121, DenseNet201, Xception, InceptionV3, NasNetMobile, MobileNetV2, EfficientNetB7, ConvNeXtBase) on a seven-class eggplant leaf disease dataset using standardized preprocessing, data augmentation, and identical training protocols. After identifying ResNet152 and ConvNeXtBase as the top-performing models, their deep feature representations are fused at the feature level to construct a hybrid CNN-based feature fusion model, followed by a classifier head evaluated using accuracy, precision, recall, and F1-score, yielding more than a 7% improvement in overall accuracy compared with the best individual transfer learning backbone while also providing consistent gains across minority disease classes. To make the model transparent and trustworthy, explainable AI techniques such as Grad-CAM-based saliency maps are integrated to highlight the most influential leaf regions for each prediction, enabling visual validation of disease-specific patterns and reducing reliance on opaque decisions. The proposed XAI-enabled feature fusion model is suitable for deployment in real-world mobile or web-based decision-support tools, allowing farmers and agronomists not only to obtain reliable disease predictions from leaf images but also to understand why a particular diagnosis is made, thereby supporting timely, data-driven, and interpretable management actions in precision agriculture scenarios.

Psychological Perception of Conversational AI among tech-engaged youth in Bangladesh

The current study makes a significant contribution to the existing literature as one of the empirical studies on the psychological aspects of using conversational AI among tech-engaged youth in Bangladesh. The results show that there is a trust–usage gap, meaning that the more people use AI, the more they value its utility, but not necessarily its trustworthiness. The study also reveals that perceived AI emotional understanding is a more powerful predictor of positive psychological impact than general trust and surface-level anthropomorphism, providing a nuanced view of human–AI interaction in a developing-country context. This study combines quantitative statistical analysis with qualitative thematic findings, offering a culturally relevant framework that enhances the understanding of the adoption of AI and guiding future research on trust, anthropomorphism, and psychological interactions with AI in Bangladesh.