Large numbers of the Globe Skimmer dragonfly (Pantala flavescens) appear in the Maldives every October-December. Since they cannot breed on these largely waterless islands, it has recently been suggested that they are "falling out" during a trans-oceanic flight from India to East Africa. In addition, it has been suggested that this trans-oceanic crossing is just one leg of a multi-generational ...

Predator-induced phenotypic plasticity has been widely documented in response to native predators, but studies examining the extent to which prey can respond to exotic invasive predators are scarce. As native prey often do not share a long evolutionary history with invasive predators, they may lack defenses against them. This can lead to population declines and even extinctions, making exotic p...

This study will solve the classical vehicle routing problem, goal is to generate k trips with shortest distance for h customers predetermined locations and needs.. The proposed solution problem a hybrid sine cosine algorithm. algorithm hybridized grey wolf optimizer, which used in combination methods of tournament selection, opposition learning, mutation crossover method build optimal plan mean...

A detailed investigation including a low-speed flow study is presented on the development of ultra-light dragonfly mimetic flying robots with a focus on the dragonfly’s remarkable gliding capability. It is revealed that the dragonfly’s corrugated wing structure and cruciform configuration provide superior flying characteristics for fixed wing robots in low Reynolds number flight. It was also fo...

Three-parameter (3-p) Weibull distribution is commonly used in sciences such as engineering, reliability, and renewable energy. Thus, a great number of studies have been conducted on the estimation for parameters this distribution. One mostly utilized methods estimating unknown related literature Maximum likelihood (ML) method. In study, population-based novel heuristic method proposed to use D...