منابع مشابه
A Few Words on Our New Format
Solving aero-acoustic or electromagnetic wave-dominated problems often requires finding accurate infinite domain solutions on a finite computational domain. One way of accomplishing this is to formulate absorbing boundary conditions through the technique of perfectly matched layers (PML). We discuss recent developments of PML methods for the absorption of acoustic waves in homogeneous mean flow...
متن کاملA Few Words on Secret Writing
As we can scarcely imagine a time when there did not exist a necessity, or at least a desire, of transmitting information from one individual to another, in such manner as to elude general comprehension; so we may well suppose the practice of writing in cipher to be of great antiquity. De La Guilletiere, therefore, who, in his "Lacedaemon Ancient and Modern," maintains that the Spartans were th...
متن کاملLast Words: On Becoming a Discipline
The title of this column, Last Words, reminds me of an occasion in 2005, when I had the privilege of attending the award ceremony for the prestigious Benjamin FranklinMedal, given annually to a few scientists who have made outstanding lifetime contributions to science. This time, a computational linguist, Aravind Joshi, was among them, so several past, present, and future presidents and officer...
متن کاملOn a Few Diophantine Equations, in Particular, Fermat’s Last Theorem
This is a survey on Diophantine equations, with the purpose being to give the flavour of some known results on the subject and to describe a few open problems. We will come across Fermat’s last theorem and its proof by Andrew Wiles using the modularity of elliptic curves, and we will exhibit other Diophantine equations which were solved à la Wiles. We will exhibit many families of Thue equation...
متن کاملA Few Words on Entropy, Thermodynamics, and Horizons
We review recent progress in understanding certain aspects of the thermodynamics of black holes and other horizons. Our discussion centers on various “entropy bounds” which have been proposed in the literature and on the current understanding of how such bounds are not required for the semi-classical consistency of black hole thermodynamics. Instead, consistency under certain extreme circumstan...
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ژورنال
عنوان ژورنال: Journal of the Institute of Actuaries
سال: 1887
ISSN: 0020-2681,2058-1009
DOI: 10.1017/s0020268100052240