Rajshahi University of Engineering and Technology

HierTAC-Net: a robust and explainable hierarchical attention network for multi-configuration gastrointestinal endoscopic image classification

Abstract Colorectal cancer is a leading cause of cancer death worldwide, even though colonoscopy is an effective screening tool. Automated analysis of endoscopic images can help doctors find more lesions and make faster decisions, but current systems usually handle just one task,...

Transforming invasive water hyacinth into nanocellulose-based biodegradable packaging films: Synthesis, comprehensive characterization, and sustainability assessment

Petroleum-based plastics are widely used in packaging, but their extensive use and poor biodegradability contribute significantly to persistent plastic waste and environmental pollution. This study aimed to valorize Eichhornia crassipes (water hyacinth), an invasive aquatic weed,...

Nonlinear response analysis of the Duffing-Van der Pol oscillator with external excitation using a modified Lindstedt-Poincaré method

The Van der Pol oscillator is well known for generating a self-sustained limit cycle in its unforced state; however, when an external periodic force is applied, its dynamical responses may deviate sharply away from this natural rhythm. The existing Lindstedt-Poincaré method becom...