Morphological diversity within closely related species is an essential aspect of evolution and adaptation. Mutations in the Melanocortin 1 receptor (Mc1r) gene contribute to pigmentary diversity in natural populations of fish, birds, and many mammals. However, melanism in the gray wolf, Canis lupus, is caused by a different melanocortin pathway component, the K locus, that encodes a beta-defens...

provide extensive genome sequencing within dogs and cats to map their genetic diversity. The rewards of these efforts for evolutionary biology are considerable. Well-resolved phylogenetic trees of most carnivore families were early accomplishments. Efforts to map genome diversity have found signals of selection in regions that can be related to specific phenotypes. In the dog, the genetic basis...

This paper presents the use of a new meta-heuristic technique namely gray wolf optimizer (GWO) which is inspired from gray wolves’ leadership and hunting behaviors to solve optimal reactive power dispatch (ORPD) problem. ORPD problem is a well-known nonlinear optimization problem in power system. GWO is utilized to find the best combination of control variables such as generator voltages, tap c...

Abstract With the rapid development of modern wireless technology, it is necessary to continuously optimize microwave devices meet higher requirements communication systems. In this paper, we propose a device optimization method based on extreme learning machine (ELM) and gray wolf optimizer (GWO). adopt GWO parameters ELM establish mapping relationships between design their responses. Accordin...

In order to address the problems of insufficient load capacity and rotor vibration, an active fluid-film bearing lubricated with magnetorheological fluid (MRF) is proposed. First, geometry MRF designed its intelligent lubrication mechanism analyzed clarify advantages. addition, mathematical model bearing-rotor system derived, FEM utilized obtain stiffness damping coefficients supplement model. ...

Accurate prediction of landslide displacement is an effective way to reduce the risk disaster. Under influence periodic precipitation and reservoir water level, many landslides in Three Gorges Reservoir area underwent significant deformation, showing a similar step-like deformation curve. Given nonlinear characteristics displacement, model established this study according variational mode decom...

The golden jackal (Canis aureus) is one of the most common and widely distributed carnivores in India but phylogeographic studies on the species have been limited across its range. Recent studies have observed absence of mitochondrial (mt) DNA diversity in European populations while some North African populations of golden jackal were found to carry gray wolf (Canis lupus lupaster) mtDNA lineag...

The gray wolf (Canis lupus) is one of the few large predators to survive the Late Pleistocene megafaunal extinctions [1]. Nevertheless, wolves disappeared from northern North America in the Late Pleistocene, suggesting they were affected by factors that eliminated other species. Using skeletal material collected from Pleistocene permafrost deposits of eastern Beringia, we present a comprehensiv...

This work proposes a metaheuristic-based approach to hyperparameter selection in multilayer perceptron classify EMG signals. The main goal of the study is improve performance model by optimizing four important hyperparameters: number neurons, learning rate, epochs, and training batches. proposed this shows that optimization using particle swarm gray wolf optimizer significantly improves classif...