UK Nonlinear News, February 1999

Lewis Fry Richardson Medal Awarded to Professor Raymond Hide

The Lewis Fry Richardson Medal of the European Geophysical Society is awarded for work on nonlinear processes in geophysics. The award for 1999 has been made to Raymond Hide (Emeritus Professor of Physics at the University of Oxford, UK) in recognition of his "pioneering experimental and theoretical studies of the nonlinear dynamics of rotating fluids, and their application to understanding the dynamics of planetary atmospheres and interiors".

Source: Professor Raymond Hide (

Discrete versions of the Boltzmann equation

I am interested in discrete versions of the Boltzmann equation with the "full" scattering term, i.e., without the relaxation time approximation. I would like to correspond with researchers working in this area.

Dr. Peter Enders
Fischerinsel 2
10179 Berlin


Source: Dr. Peter Enders (

New Recurrence Analysis software

Version 3.0 of Visual Recurrence Analysis (VRA) for Windows 95, 98 and NT has been released.

VRA is a free software for topological analysis and qualitative assessment of (chaotic) time series. It can detect hidden patterns and determinism in time series using graphical device known as the Recurrence Plot (RP). Before a RP is constructed, VRA expands a given one-dimensional time series into a higher-dimensional space, in which the dynamic of the underlying generator takes place. This is done using a technique called "delayed coordinate embedding", which recreates a phase space portrait of the dynamical system under study from a single data series. VRA is very fast and highly interactive. Extensive online help is provided. Many qualitative and quantitative analysis tools have been added.

VRA version 3.0 remains free provided that you use it for educational/ academic/research purposes.

I welcome any questions and suggestions you may have regarding VRA software and its use. Download VRA from

Source: Eugene Kononov (

Software: Software and tutorials available for recurrence quantification analysis (RQA)

Software and tutorials are available for recurrence quantification analysis (RQA) and cross recurrence quantification through links at RQA is an extension of recurrence plots (RP) in that it quantifies several features obtained in recurrence plots, including an approximate measure of Liapunov exponents. Whereas RPs provide visual hints of dynamics, they are liable to misinterpretation. RQA overcomes this difficulty by quantifying %recurrence, %determinism, entropy (of line segment lengths), lmax (Liapunov estimation), and trend (approx. derivative). Cross recurrence quantification provides similar information between 2 ordered dynamics.

Source: Joe P. Zbilut.

UKIE Siam Section: UKIE Elections

The posts of president and vice-president of the United Kingdom and Republic of Ireland SIAM section are determined by a ballot of the section members. In response to my call for nominations (sent out 15/11/98), I am pleased to inform you that three valid nominations have been received.

One nomination for president:
Trevor Stuart (Imperial College)

Two nominations for vice-president (in alphabetical order)
Desmond Higham (University of Strathclyde)
Paul Martin (University of Manchester)

The result will be declared at the annual meeting on 8th January at Imperial College, and the new officers will be in post until 30/3/2001.

Source: D.J. Silvester (

UK Nonlinear News: Sakse Orstavik steps down as UK Nonlinear News editor

With this issue Sakse Orstavik steps down as an editor of UK Nonlinear News. Sakse starts a job with Barclays Capital in July and has decided to concentrate on finishing his PhD.

Sakse joined the editorial team with issue 8 (May 1997). In addition to maintaining the UK Nonlinear News mailing list and helping out with the behind-the-scenes preparation for each issue he also found time to write several articles for UK Nonlinear News:

  1. The Global Nonlinear Community.
    Sakse Orstavik. UK Nonlinear News 11, February 1998.
  2. 6th Applied Nonlinear Mathematics Spring School. (Loughborough, England).
    Sakse Oerstavik. UK Nonlinear News 8, May 1997.
  3. Backlog of Applied Mathematics Research Journals.
    Sakse Oerstavik. UK Nonlinear News 8, May 1997.
  4. Backlog of Applied Mathematics Research Journals.
    Sakse Oerstavik. UK Nonlinear News 12, May 1997.

We thank Sakse for all his hard work during his time as an editor.

UK Nonlinear News: Cliburn Chan joins UK Nonlinear News editorial board

UK Nonlinear News welcomes Cliburn Chan to its editorial board. Cliburn is a PhD student at the Centre for Nonlinear Dynamics and its Applications (UCL) working under the supervision of Jaroslav Stark and Andrew George at Hammersmith Hospital on cytokine networks, funded by ORS and UCL scholarships.

Web Resource Site in Control Theory and Engineering

The site collects several resources for control theory and engineering, including the complete and indexed collections of the Electronic Newsletter in Control and the Nonlinear Control Abstracts, as well as links to books, journals, software, technical societies, conference listings, and other web sites.

Source: David Hilbert (

Second TUXEDO meeting of the year 3 March 1999.

Wednesday 3 March 1999, 12noon-5.30pm
Spatially Extended Dynamics Group in the King's College Research Centre, Cambridge

Programme: Workshop on "Ecological and biological spatiotemporal dynamics"

The talks are planned to last 35-40 mins with 5 to 10 minutes for questions. Given below is a time-table of talks.

12.00-12.45: P. Coullet (Nice) TBA
12.45-14.00: Lunch
14.00-14.45: C. Bauch (Warwick) "Analytical models for STD on a network"
14.45-15.30: M. Banaji (QMW) "Coherent Strucutres in Globally Coupled Oscillators"
15.30-16.00: Tea Break
16.00-16.45: R. Carretero (UCL) "Thermodynamic limit from small lattices of coupled maps"
16.45-17.30: V. Baladi (Geneva) "Recent rigorous results on coupled map lattices"

The meeting starts at 12.00noon and lasts until 5.30pm with a break for lunch as well as tea and biscuits. This start time should allow participants from Warwick, QMW, UCL and Surrey to reach us by train. (Note that parking in Cambridge is limited and expensive). Coventry to Cambridge (via Nuneaton) leaves 8:24, arrives 11:35. London (Kings Cross) to Cambridge leaves 10:15 and 10:45, arrives 11:06, 11:34.

Details of how to find King's College are best obtained from the King's Web Site. Further details can be provided if necessary.

All are welcome, especially graduate students, and travel expenses of those from QMW, UCL, Warwick and Surrey can be reimbursed by asking Robert MacKay at the meeting - this is from a grant provided by the London Mathematical Society.

More information can be found on the TUXEDO web site, or contact Matt Keeling at

<< Move to UK Nonlinear News Issue Fifteen Index Page (February 1999).
Last Updated: 12th January 1999.