منابع مشابه
Denis Pelli
appeared, predator-prey interactions resulted in more selection pressure. Exceptionally preserved fossil occurrences reveal an increase in ecological complexity over time. Escalation in the number of different modes of life includes the exploitation of a greater range of levels above and below the sediment surface (tiering), as well as diversification of feeding mechanisms and modes of locomoti...
متن کاملA Curling Shot Tracking Program
We present an algorithm for tracking the position of a curling stone from broadcast footage of curling events. Due to the constant panning of the camera in addition to perspective changes in the image, this introduces a need for image rectification and tracking of the camera view on the ice. We break the algorithm in four distinct components: rectification, frame tracking, stone tracking, and l...
متن کاملPhotoinduced curling of organic molecular crystal nanowires.
Materials that transform light into mechanical motion are interesting from both fundamental and technological perspectives. Photomechanical materials usually consist of photoreactive molecules assembled in an ordered matrix, for example a liquid crystal polymer. The use of molecular crystals as photomechanical materials is challenging, since strain between reacted and unreacted crystal phases o...
متن کاملJohn Denis Sargan 1924 — 1996
J. D. Sargan was born on August 23, 1924, in Doncaster, Yorkshire, where he spent his childhood. He was Emeritus Professor of Econometrics at the London School of Economics when he died at his home in Theydon Bois, Essex, on Saturday 13 April, 1996. He received his secondary education at Doncaster Grammar School and, at the age of 17, gained a State Scholarship for entrance to St. Johns College...
متن کاملComment on: Curling rock dynamics — The motion of a curling rock: inertial vs. noninertial reference frames
We examine the approach used and the results presented in a recent publication (Can. J. Phys. 76, 295 (1998)) in which (i) a noninertial reference frame is used to examine the motion of a curling rock, and (ii) the lateral motion of a curling rock is attributed to left–right asymmetry in the force acting on the rock. We point out the important differences between describing the motion in an ine...
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ژورنال
عنوان ژورنال: Vivat Academia
سال: 2011
ISSN: 1575-2844
DOI: 10.15178/va.2011.117.151