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About this site

This site contains most of my published work including books, invited chapters, scientific papers and software as well as more general topics. It does not contain items as published, only their early forms to protect publisher's investments.

Download what you like. You may use all or part of these works provided you acknowledge their author(s) and this site as their source. The copyright remains with me.

For a year and half it used Wordpress. It looked really nice but there were the usual crashes, hacks and so on because complex systems are so vulnerable. The last one even the hosting company couldn't recover although I had not touched the site for 3 months, so I gave up and went back to this old system I wrote years ago which at least has the benefit that it works. The equation I produced using CodeCogs with grateful thanks.

Selection of recent work up to September 2016:

Conservation of Information in Proteins

This is an application of Conservation of Information in the structure of proteins by Greg Warr and myself. In essence, CoI applies a global constraint on the action of natural selection by which all proteins in a species tend to have the same average size and the average size of a protein depends only on its unique amino acid alphabet including the action of post-translational modification.

PLOS ONE download
Reproducibility package
How to build reproducibility packages

Software's Hidden Clockwork

This is a recent result showing that all software systems have a hidden clockwork which forces them into the same component size distribution whatever they do, whoever wrote them and whatever technology or language was used. Just watch as 55 million lines of C, C++, Java, Fortran, Ada and Tcl-Tk asymptote to the above formula in 1/2 million line chunks. The flat bit on the left is related to fixed tokens in programming languages.

IEEE TSE preprint
Theory paper 1
Theory paper 2

Its reassuring to find great beauty and symmetry underlying something as anarchic and fashion driven as software engineering.

Email Forensics: Eliminating Spam, Scams and Phishing

Get Email Forensics at
Get Email Forensics at

Current contents registered in database Courses I give Popular shortcuts

Scientific writing

  • Number of books: 5
  • Number of invited chapters: 6
  • Number of papers: 216
  • Number of articles: 61

Other writing

  • Number of items: 23

$Revision: 1.58 $, $Date: 2016/01/03 19:07:28 $