منابع مشابه
Wright-Fisher construction of the two-parameter Poisson-Dirichlet diffusion
The two-parameter Poisson–Dirichlet diffusion, introduced in 2009 by Petrov, extends the infinitely-many-neutral-alleles diffusion model, related to Kingman’s one-parameter Poisson–Dirichlet distribution and to certain Fleming–Viot processes. The additional parameter has been shown to regulate the clustering structure of the population, but is yet to be fully understood in the way it governs th...
متن کاملAeroplane Deformation Measurement
With industrial development, industrial products have become more refined and complex, resulting in increased necessity for manufacturers to come up with a robust method of measurement to check whether or not the products have been produced correctly to meet customers’ needs. As a result, significant attention has been drawn to industrial photogrammetry to satisfy such needs without contacting ...
متن کاملThe weightshift-controlled microlight aeroplane
Microlight aircraft are increasingly becoming the most popular segment of private aviation. In the United Kingdom the majority (about 2500 of a total fleet of 3500) of these aircraft are of the weightshift class, also known as flexwings or trikes. This paper introduces the main issues involved in the design and operation of this class of aeroplane.
متن کاملAeroplane Accident in Calcutta
On the 16th November, 1949, at 6 minutes to ten in the morning two aeroplanes collided in mid-air over Calcutta and crashed. One of them crashed into the Calcutta Medical College compound, damaging several rooms in the north-eastern corner of the Calcutta School of Tropical Medicine. The following photographs show the damage done to room No. 17 in which the editorial office is situated. Fortuna...
متن کاملMultiple equivalent matings with the aeroplane polynomial
We produce arbitrarily large equivalence classes of matings with the aeroplane polynomial. These are obtained by a slight generalisation of the technique of proof of a similar result for Wittner captures.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific American
سال: 1908
ISSN: 0036-8733
DOI: 10.1038/scientificamerican10311908-280supp