In this issue of GENETICS, a new method for detecting natural selection on polygenic traits is developed and applied to several human examples (Racimo et al. 2018). By definition, many loci contribute to variation in polygenic traits, and a challenge for evolutionary geneticists has been that these traits can evolve by small, nearly undetectable shifts in allele frequencies across each of many,...

We used a motorized treadmill to determine the endurance (from 4.2 to 5.6cm s") and burst speed of five Coluber constrictor Linnaeus performing concertina locomotion in tunnels 3, 5 and 7cm wide. The snakes had greatest average endurance at 4.2cms" within the 5cm wide tunnel (80min), and the average endurance of snakes moving in the 3 cm tunnel (24 min) was significantly lower than that observe...

The coefficient of friction between a wheel tread and the top rail should be maintained at intermediate levels to limit frictional tangential contact forces. This can achieved by applying top-of-rail products. Reducing reduces energy consumption fuel costs, as well damage surfaces, such as, e.g., wear, rolling fatigue, corrugation. work describes simulation model that predicts evolution functio...

The prevalence and severity of latex allergy has increased dramatically in the last 15 years due to exposure to natural rubber products. Although historically this health risk has been elevated in hospital personnel and patients, a recent survey has indicated a significant potential risk for the general population. To obtain a wide-spread source for latex exposure, we have considered tire debri...

754 From Star Trek to Star Wars to Terminator, science-fiction movies and TV series teem with morphing robots. If that vision is indeed a sneak preview of things to come, then the future of robotics is lying face down on a table in Mark Yim’s laboratory at the Palo Alto Research Center (PARC) in California. Or rather, was lying face down, because now it’s trying to stand up. First, the 30-centi...

Abstract The numerical and computation aspects of the Knife-edge Equivalent Contact ( KEC ) constraint lookup table LUT methods are compared in this paper. method implementation uses a penetration-based elastic contact model for flange constraint-based formulation at wheel tread. For method, where an infinitely narrow rail contacts equivalent wheel, regularization tread-flange transition is ado...

Abstract Within this paper, a three-dimensional finite element (FE) model of uniformly loaded, single rubber block, is described and run using loading conditions replicative standard slip resistant footwear test. The FE considers hyperelastic viscoelastic material properties, obtained dynamic mechanical analysis. performance the was evaluated through analytical compression analysis experimental...

This article explores Rosanna Raymond’s performative intervention titled “Soli I Tai—Soli Uta” (Tread on the Sea—Tread Land). Today, many cultural institutions try to develop progressive strategies facilitate “intercultural dialogue.” In this endeavor, are explored, some of which developed in collaboration with experts from so-called “source communities.” Such collaborations have longer histori...