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Home of PSL/PSA
Requirements Management

The World's Best Requirements Modelling Language
Correct, Complete, Consistent

Website devoted to everything requirements modelling, particularly PSL/PSA ...

This website continues work started in 1967, and which became what is probably the world's most extensive collaborative project to define a requirements modelling language that uses natural language, is scalable from small to huge projects, is in the public domain, is based on sound theory, and can provide a basis for new international standards.

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ISDOS and PRISE archives nearly recovered. Work is now in an advanced state in both UK and US to recover most of the ISDOS and PRISE archives of technical memos, working papers, and conference papers. These are being rendered into machine readable form from paper originals. Some of the documents will be made available here. It is not possible to put the whole archives on line as there are many items issued by ISDOS, which were marked as reproduced by permission of .... Therefore they cannot me published without the consent of the original copyright owner.
 
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PSL/PSA rebuild project
Written by Administrator   
Tuesday, 20 July 2010

Work has now started to rebuild PSL/PSA. It is expected that a new version (v7.0) will be available early 2011. The rebuild of PSL/PSA will use completely new technology rather than being a port of earlier versions. The following table sets out the current view of releases:

 Version Characteristics
 7.0Implementation of Level 1 form shown in Business Process Analysis
 8.0Addition of Level 2 objects and relationships shown in Business Process Analysis book.
 9.0 Full functionality based on PSL/PSA v6.0

 
Last Updated ( Tuesday, 20 July 2010 )
 
Dan Teichroew Bibliography
Written by metaPSL   
Tuesday, 20 July 2010

Work is in hand to complete a bibliography of the works of Professor Daniel Teichroew, the originator of the first PSL/PSA. Please send in details of any publications you know about, so we can be sure the list is an complete as possible. A first draft will be prepared during summer 2010.
Last Updated ( Tuesday, 20 July 2010 )
 
Welcome to PSL/PSA
Written by metaPSL   
Tuesday, 20 July 2010

Welcome to the revamped home page for PSL/PSA, the world's most powerful requirements modelling toolkit. Over the coming months this site will be expanded by moving across all the original site materials, and then developed further.  Register now and make your own contributions. It will be wonderful to see content developed and added by the many people over the years who have had any involvement or interest in PSL/PSA, the ISDOS or PRISE projects at the University of Michigan, or any of the derivative tools. Much material from the archives will be made available.

 

The PSL language syntax is now available in its entirety at this website. Work is underway to make available a new version of PSL/PSA during 2011. A decision has yet to be taken to retain this as proprietary, or make it available aqs an open source product. Your views will be welcome.

 

The platform for the site is open source Joomla. This has been selected so that it is easy for you to make you contribution to the site, commenting, and adding new sections as you see fit.

 

The site is maintained by Geoffrey Darnton.
Last Updated ( Tuesday, 20 July 2010 )
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