The fast Fourier transform (FFT) has applications in almost every frequency related study, for example, image and signal processing, radio astronomy. It is also used as a Poisson operator inversion kernel partial differential equations fluid flows, density functional theory, many-body others. three-dimensional FFT large time complexity . Hence, parallelization to compute such FFTs. Popular libr...

This paper proposes a hybrid Dragonfly Algorithm (DA) for training Multi-Layer Perceptron Neural Network (MLP NN) to design the classifier solving complicated problems and distinguishing real target from liars’ targets in sonar applications. Due improve cost computation reducing waste of time, modified low-cost DA is designed evaluation. To assess accuracy technique, some well-known meta-heuris...

Context. Saturn’s massive gravity is expected to causes a tide in Titan’s atmosphere, producing surface pressure variation through the orbit of Titan and tidal winds troposphere. The future Dragonfly mission could analyse this exotic meteorological phenomenon.

Some populations of the newt Taricha granulosa possess extremely highconcentrations of the neurotoxin tetrodotoxin (TTX). Tetrodotoxin is present in adult newts and their eggs, but has been assumed to be absent from the larval stage. We testedlarval and metamorphosed juveniles for the presence of TTX and evaluated thepalatability of these developmental stages to predatory dragonfly ...

The acquisition of sensory information by animals is central to species interactions. In aquatic environments, most taxa use chemical cues to assess predation risk and other key ecological factors. A number of laboratory studies suggest that anthropogenic pollutants can disrupt chemoreception, even when at low, non-toxic concentrations, but there are few tests of whether real-world variation in...

Large-scale digitization of museum specimens, particularly of insect collections, is becoming commonplace. Imaging increases the accessibility of collections and decreases the need to handle individual, often fragile, specimens. Another potential advantage of digitization is to make it easier to conduct morphometric analyses, but the accuracy of such methods needs to be tested. Here we compare ...

Dragonfly wings resist millions of cycles of dynamic loading in their lifespan. During their operation, the wings are subjected to relatively high mechanical stresses. They further experience accidental collisions which result from the insects' daily activities, such as foraging, mating and fighting with other individuals. All these factors may lead to irreversible wing damage. Here, for the fi...

Among other sensory modalities, flight stabilization in insects is performed with the aid of visual feedback from three simple eyes (ocelli). It is thought that each ocellus acts as a single wide-field sensor that detects changes in light intensity. We challenge this notion by providing evidence that, when light-adapted, the large retinal L-neurons in the median ocellus of the dragonfly respond...

Dragonfly wings resist millions of cycles of dynamic loading in their lifespan. During their operation, the wings are subjected to relatively high mechanical stresses. They further experience accidental collisions which result from the insects’ daily activities, such as foraging, mating and fighting with other individuals. All these factors may lead to irreversible wing damage. Here, for the fi...