The Eckhaus stability boundaries of travelling periodic roll patterns arising in binary fluid convection is analysed using high-resolution numerical methods. We present results corresponding to three different values of the separation ratio used in experiments. Our results show that the subcritical branches of travelling waves bifurcating at the onset of convection suffer sideband instabilities...

Range expansion and range shifts are crucial population responses to climate change. Genetic consequences are not well understood but are clearly coupled to ecological dynamics that, in turn, are driven by shifting climate conditions. We model a population with a deterministic reaction-diffusion model coupled to a heterogeneous environment that develops in time due to climate change. We decompo...

Travelling Sales Person Problem is one of the classical combinatorial optimization problems that belong to the NP-complete class. It is the problem of finding the optimized path for a given set of cities. The path is drawn in such a way that the salesperson has to visit each city exactly once. This paper provides an efficient method for solving the classical Travelling Sales Person Problem by u...

The aim of this study is to examine differences in women’s perceptions travel constraints by personality trait, according age, educational level, personal income, travelled destination, the purpose travelling, time spent region and factors that affect choice destination. survey data collected from a sample 304 women travellers were analyzed performing one-way analysis variance (ANOVA). results ...

This paper deals with the numerical solution of a class of reaction diffusion equations arises from ecological phenomena. When two species are introduced into unoccupied habitat, they can spread across the environment as two travelling waves with the wave of the faster reproducer moving ahead of the slower.The mathematical modelling of invasions of species in more complex settings that include ...

This paper addresses the Vehicle Routing Problem with Delivery Time Cost. This problem aims to find a set of routes of minimal total costs including the travelling cost and delivery time cost, starting and ending at the depot, in such a way that each customer is visited by one vehicle given the capacity of the vehicle to satisfy a specific demand. In this research, a hybrid metaheuristic approa...