44 downloads
80 views

The taxonomy of freshwater crabs requires a paradigm change in methodological approaches, particularly in investigations that use morphological techniques. The traditional morphometric approach (two-dimensional measurements) tends to be inappropriate for the identification...

["Mathematical Biology","Taxonomy"]
doi:10.7717/peerj.6205
69 downloads
233 views

Background: Lewis’s law and Aboav-Weaire’s law are two fundamental laws used to describe the topology of two-dimensional (2D) structures; however, their theoretical bases remain unclear. Methods: We used R package Conicfit software to fit ellipses based on the...

["Biophysics","Cell Biology","Mathematical Biology"]
doi:10.7287/peerj.preprints.27421v3
74 downloads
183 views

Integrating new data with older reports on the behavior of small land-birds in the Galapagos archipelago reveal that geographic isolation of population together with behavioral segregation of populations produce a synergy that is more likely to produce speciation...

["Animal Behavior","Ecology","Evolutionary Studies","Mathematical Biology","Population Biology"]
doi:10.7287/peerj.preprints.27512v1
45 downloads
302 views

Background Scarlet fever is recognized as being a major public health issue owing to its increase in notifications in mainland China, and an advanced response based on forecasting techniques is being adopted to tackle this. Here, we construct a new hybrid method...

["Mathematical Biology","Epidemiology","Health Policy","Infectious Diseases","Public Health"]
doi:10.7717/peerj.6165
75 downloads
140 views

The observed dynamics of infectious diseases are driven by processes across multiple scales. First is within-host, that is how an infection progresses inside a single individual (for instance viral and immune dynamics). Second is how the infection is transmitted...

["Computational Biology","Mathematical Biology","Epidemiology","Infectious Diseases"]
doi:10.7287/peerj.preprints.27485v1
130 downloads
362 views

Among insects, locusts are widely recognized for their excellent jumping performances. Indeed, jumping helps locusts to avoid predators as well as to initiate flight. In the present contribution, we employed high-speed videos to analyze the jumping performance...

["Animal Behavior","Mathematical Biology","Zoology"]
doi:10.7287/peerj.preprints.2877v2
81 downloads
117 views

The phenology, or timing of life history events, of organisms affects both ecological and evolutionary dynamics. Recent work has illustrated the effects of climate change on the phenology for many species. Changing selective pressures on phenology can have consequences...

["Conservation Biology","Ecology","Evolutionary Studies","Mathematical Biology","Population Biology"]
doi:10.7287/peerj.preprints.27435v1
45 downloads
382 views

The classical way of defining enzyme inhibition has obscured the distinction between inhibitory effect and the inhibitor binding constant. This article examines the relationship between the simple binding curve used to define biomolecular interactions and the standard...

["Biochemistry","Computational Biology","Mathematical Biology","Drugs and Devices","Pharmacology"]
doi:10.7717/peerj.6082
76 downloads
411 views

Background Mesenchymal stem/stromal cells (MSCs) are a promising tool for cell-based therapies in the treatment of tissue injury. The stromal cell-derived factor-1 (SDF-1)/CXC chemokine receptor 4 (CXCR4) axis plays a significant role in directing MSC homing to...

["Cell Biology","Mathematical Biology","Drugs and Devices"]
doi:10.7717/peerj.6072
218 downloads
280 views

Some marine microparasitic pathogens can survive several months outside the host in the water column to make contact with hosts or to be absorbed or filtered by hosts. Once inside, pathogens invade the host if they find suitable conditions for reproduction within...

["Ecology","Marine Biology","Mathematical Biology","Parasitology","Infectious Diseases"]
doi:10.7287/peerj.preprints.26454v3
69 downloads
291 views

Axonal stimulation with electric currents is an effective method for controlling neural activity. An electric field parallel to the axon is widely accepted as the predominant component in the activation of an axon. However, recent studies indicate that the transverse...

["Biophysics","Computational Biology","Mathematical Biology","Neurology"]
doi:10.7717/peerj.6020
100 downloads
502 views

Gammatones have had a long history in auditory studies, and recent theoretical work suggests they may play an important role in cochlear mechanics as well. Following this lead, the present paper takes five examples of basilar membrane impulse responses and uses...

["Biophysics","Computational Biology","Mathematical Biology","Neuroscience","Otorhinolaryngology"]
doi:10.7717/peerj.6016
68 downloads
271 views

The Bertalanffy–Pütter growth model describes mass m at age t by means of the differential equation dm/dt = p * ma − q * mb. The special case using the von Bertalanffy exponent-pair a = 2/3 and b = 1 is most common (it corresponds to the von Bertalanffy growth...

["Aquaculture, Fisheries and Fish Science","Computational Biology","Mathematical Biology","Computational Science","Natural Resource Management"]
doi:10.7717/peerj.5973
34 downloads
101 views

To compare multiple genome sequences, we transform each primary genome sequence into corresponding k-mer-based vectors. According to the principle of independent component analysis (ICA), the operation can be regarded as mixing multiple source genomic signals via...

["Bioinformatics","Computational Biology","Genomics","Mathematical Biology","Data Mining and Machine Learning"]
doi:10.7287/peerj.preprints.27333v1
81 downloads
365 views

Protein backbones occupy diverse conformations, but compact metrics to describe such conformations and transitions between them have been missing. This report re-introduces the Ramachandran number (ℛ) as a residue-level structural metric that could simply the life...

["Bioinformatics","Computational Biology","Mathematical Biology"]
doi:10.7717/peerj.5745

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