The present paper investigates penetrative convection in a bi-disperse porous medium. In particular, is modeled via quadratic dependence on the temperature for fluid density. For problem under examination, can occur only through secondary stationary motion since validity of principle exchange stabilities proved. Via linear instability analysis conduction solution, critical Rayleigh number onset...

This study evaluates the effectiveness of decentralizing tourists by promoting alternative local-guided tours. Results from a discrete choice experiment among young travellers indicate that while culinary tours are preferred over central attractions, overall, visitors demonstrated strong tendency to visit main attractions. Furthermore, labelled as sustainable were perceived less attractive. The...

This article proposes a statistical test for determining whether agents in discrete locations are more agglomerated or disperse than predicted by independent random choice.

Introduction : As measured by the criteria of ability to disperse and to adapt to varying environments, II&~ acapti must be reckoned as a distinctly successful species.