UK Nonlinear News,
Dr Greg King
recently attended the
1st International Symposium on Ultrasound Doppler Methods
for Fluid Mechanics and Fluid Engineering.
This was organized by Y. Takeda,
and held at the Paul Scherrer Institute in
He writes that:
"Many of the results presented at this meeting used a new instrument,
available commercially, which under suitable conditions measures a
vector time series (the velocity at 128 spatial positions).
Suitable fluids include opaque fluids (magnetic fluids, liquid
metals, chocolate, blood).
"The cost of this instrument is currently
only about 30,000 pounds. It will change the type of systems which
experimenters will investigate. In particular increased activity in
flows of a magnetic fluid (e.g. ferrofluid) and liquid metals is
For more information contact Dr King at
1997 ANM Spring School
Applied Nonlinear Mathematics Spring School will be held at
University, from 14-18 April 1997.
For a description, see
listing in the
Events and Conferences section of this UK
Special Year on Numerical Manifolds
Numerical Analysis Group and the
Nonlinear Centre in DAMTP are
expecting a number of visitors in the forthcoming academical year with an
interest in numerical methods for differential equations on manifolds. Combined
with the ongoing work in Cambridge on this subject, the outcome will be a
(highly informal) special year on numerical manifolds.
A range of activities is planned,including seminars, informal
gatherings and perhaps a one-two day meeting in Spring 97.
More information is available at
or for further details contact Antonella Zanna
Crafoord Prize for Robert May
The Royal Swedish Acadamcy of Sciences has announced that its
1996 Crafoord Prize in the biosciences, with particular emphasis on
ecology, has been awarded to Sir Robert M. May of Oxford University.
May was cited for "his pionerring ecological research concerning
theoretical analysis of the dynamics of populations, communities and
ecosystems." The Crafoord Prize, which carries a value of
$ 500,000 was to be presented at the Academy in Stockholm on September
Notices of the American Mathematical Society, September 1996 (Vol 43, Number
9). The article also includes a two page biography of Robert May.
Do you know this Dynamical System ?
The set of
ODE's that came out of a recent study of self-exciting dynamos (Hide,
Skeldon & Acheson, 1996 Proc. Roy. Soc. A452, 1369-1395) is the following:
dx/dt = x(y-1) - bz,
dy/dt = a(1-xx) - ky,
dz/dt = x - lz.
y, z) are functions of dimensionless time t and (a,b,k,l) are
parameters.Have they been studied previously in other contexts?
If so, please contact:
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Last Updated: 4th October 1996.