King Mongkut's University of Technology North Bangkok

Polynomial Stability of the Timoshenko Beam System with a Fractional Dynamic Boundary Feedback

We investigate the asymptotic behavior of a Timoshenko beam system in which the free end carries a tip mass subject to a restoring spring force and a tempered Caputo fractional damping force with parameter η>0 (the case η=0 is left as an open problem). Using a diffusive state...

Mechanical-press torrefaction of Napier grass for bio-coke production: effects of temperature and pressure on densification, fuel properties, and CO2 gasification behavior

This study investigated a mechanical-press torrefaction-assisted carbonization route for producing Napier grass-derived bio-coke. Napier grass was first torrefied under mechanical pressure at 280–340 °C and 20–70 MPa, followed by carbonization at 1000 °C. The effects of torrefact...

Analytical design of ARL based on a modified EWMA control chart under ARIMA processes

In statistical process control, the performance of control charts is commonly evaluated using the average run length (ARL), which represents the expected number of observations required to signal a change in the monitored process. In many practical applications, quality character...

Explainable Surrogate-Based Knowledge Extraction from DEM Simulations: Cross-System Algorithm Selection and SHAP Interpretability for Granular Material Handling Optimization

Extracting transferable design knowledge from Discrete Element Method (DEM) simulations remains challenging in granular material handling. We develop an explainable surrogate framework for two solar-panel-recycling subsystems: a silo discharge system (outlet width 42–111 mm; hopp...