In this article a preliminary experiment is carried out in which a set of elements and procedures are described to be able to solve problems of continuous domains integrated in the Andean Condor Algorithm. The Andean Condor Algorithm is a metaheuristic algorithm...

["Adaptive and Self-Organizing Systems","Algorithms and Analysis of Algorithms","Artificial Intelligence","Autonomous Systems","Optimization Theory and Computation"]
doi:10.7287/peerj.preprints.27678v1
154 downloads
213 views

It is usually believed that the low frequency part of a signal’s Fourier spectrum represents its profile, while the high frequency part represents its details. Conventional light microscopes filter out the high frequency parts of image signals, so that people cannot...

["Computer Vision","Visual Analytics"]
doi:10.7287/peerj.preprints.27591v3
1 download
1 view

Background During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect of changes in tendon mechanical properties...

["Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.6764
1 download
1 view

Several calls to action urge scientists and science communicators to engage more with online communities. While these calls have been answered by a high percentage of scientists and science communicators online, it often remains unclear what are the best models...

["Biodiversity","Science and Medical Education","Biological Oceanography"]
doi:10.7717/peerj.6795
1 download
1 view

Burkholderia zhejiangensis CEIB S4-3 has the ability to degrade methyl parathion (MP) and its main hydrolysis byproduct p-nitrophenol (PNP). According to genomic data, several genes related with metabolism of MP and PNP were identified in this strain. However,...

["Biochemistry","Biotechnology","Microbiology","Environmental Contamination and Remediation"]
doi:10.7717/peerj.6822
1 download
1 view

Recent studies have proposed that conditional cooperation may resolve sexual conflict over the amount of care provided by each parent. Such conditional cooperation may allow parents to equalize their investment by alternating their provisioning visits. This alternated...

["Animal Behavior","Ecology","Zoology"]
doi:10.7717/peerj.6826
1 download
1 view

Background The fibronectin type 3 and ankyrin repeat domains 1 gene, Fank1, is an ancient, evolutionarily conserved gene present in vertebrates. Short-hairpin RNA (shRNA)-based knockdown transgenic mice have oligospermia caused by an increase in apoptotic germ...

["Andrology","Histology"]
doi:10.7717/peerj.6827
79 downloads
136 views

Background. The purpose of this study was to establish a reproductive schedule and examine reproductive traits that shape fecundity of the Bigeye Chub, Hybopsis amblops Cyprinidae, in the Flint River system of north Alabama. Methods. Life history traits associated...

["Aquaculture, Fisheries and Fish Science","Ecology","Freshwater Biology"]
doi:10.7287/peerj.preprints.26719v2
9 downloads
56 views

The gut microbiome plays an important role in the health of dogs. Both beneficial microbes and overall diversity can be modulated by diet. Fermentable sources of fiber in particular often increase the abundance of beneficial microbes. House crickets (Acheta domesticus)...

["Food Science and Technology","Microbiology","Veterinary Medicine"]
doi:10.7287/peerj.preprints.27677v1
15 downloads
27 views

Throughout forests worldwide, bark and ambrosia beetles inoculate dead and dying trees with symbiotic fungi. We experimentally determined the effects of three common and widely distributed ascomycete symbionts, and one introduced Asian basidiomycete symbiont on...

["Ecology","Ecosystem Science","Entomology","Mycology","Forestry"]
doi:10.7287/peerj.preprints.27676v1
58 downloads
74 views

Background Marfan’s syndrome (MFS) is a systemic disorder of connective tissue caused by mutations in the extracellular matrix protein fibrillin-1. Orofacial characteristics may be useful in identification of the syndrome. Severe periodontitis is sometimes observed...

["Dentistry"]
doi:10.7717/peerj.6606
102 downloads
201 views

Marine protected areas (MPAs) are increasingly being used as conservation tools in the marine environment. Success of MPAs depends upon sound scientific design and societal support. Studies that have assessed societal preferences for temperate MPAs have generally...

["Natural Resource Management"]
doi:10.7717/peerj.6672
109 downloads
225 views

Introgression, the transmission of genetic material of one taxon into another through hybridization, can have various evolutionary outcomes. Previous studies have detected signs of introgression between western populations of the Mexican endemic and threatened...

["Biodiversity","Conservation Biology","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.6744
80 downloads
129 views

We describe a new species of minute, terrestrial-breeding frog in the genus Noblella. We collected a single specimen in the leaf litter of primary montane forest (2,225 m a.s.l.) near Thiuni, in the Provice of Carabaya, Department of Puno, in the upper watershed...

["Biodiversity","Conservation Biology","Evolutionary Studies","Taxonomy","Zoology"]
doi:10.7717/peerj.6780
57 downloads
81 views

Although amphipods are key components of the macro-fauna associated with Posidonia oceanica meadows, to date no studies focused on the structure and diversity of their assemblages across the whole Mediterranean Sea. Here, we applied a network approach based on...

["Biogeography","Ecology","Marine Biology"]
doi:10.7717/peerj.6786

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