Dynamic patterns of adaptive radiation.

Dynamics of Adaptive Radiation

Biologists have long been fascinated by the exceptionally high diversity displayed by some evolutionary groups (e.g.,Darwin’s finches, Anolis lizards, cichlid fishes of the African Great Lakes). Adaptive radiation in such clades is not onlyspectacular, but is also an extremely complex process influenced by a variety of ecological, genetic, and developmentalfactors and strongly depen...

Dynamic modeling and control of a 4 DOF robotic finger using adaptive-robust and adaptive-neural controllers

In this research, first, kinematic and dynamic equations of a 4-DOF 3-link robotic finger are derived using Denavit-Hartenberg convention and Lagrange’s formulation. To model the muscles, several springs and dampers are placed between the finger links. Then, two advanced controllers, namely adaptive-robust and adaptive-neural, which can control the robotic finger in presence of parametric uncer...

Dynamic patterns of adaptive radiation: evolution of mating preferences sergey gavrilets and aaron vose

Introduction Adaptive radiation is defined as the evolution of ecological and phenotypic diversity within a rapidly multiplying lineage (Simpson 1953; Schluter 2000). Examples include the diversification of Darwin’s finches on the Galápagos islands, Anolis lizards on Caribbean islands, Hawaiian silverswords, a mainland radiation of columbines, and cichlids of the East African Great Lakes, among...

Modeling and Control of Gas Turbine Combustor with Dynamic and Adaptive Neural Networks (TECHNICAL NOTE)

Is Telomere Length a Biomarker of Adaptive Response? Controversial Findings of NASA and Residents of High Background Radiation Areas

Telomere length and stability is a biomarker of aging, stress, and cancer. Shortening of telomeres and high level of DNA damages are known to be associated with aging. Telomere shortening normally occurs during cell division in most cells and when telomeres reach a critically short length, DNA damage signaling and cellular senescence can be triggered. The induction of an adaptive response by sp...

Adaptive Response Induced by Pre-Exposure to 915 MHz Radiofrequency: A Possible Role for Antioxidant Enzyme Activity

Background: Over the past few years, the rapid use of high frequency electromagnetic fields like mobile phones has raised global concerns about the negative health effects of its use. Adaptive response is the ability of a cell or tissue to better resist stress damage by prior exposure to a lesser amount of stress. This study aimed to assess whether radiofrequency radiation can induce adaptive r...