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Trygve M. H. Reenskaug coordinates

I am a self-taught toolmaker by profession; having developed a variety of computer based tools since 1958. My work with computers has always been highly oriented towards creating value for the users in the short and long term. I have measured my research results by their utility, not their academic acceptance. The focus is on comprehension, abstraction, design, and quality; the goal being to get it right the first time. ("Any method that prevents the programmer writing code, is a good method"). My most successful projects have been projects where the same people were system architects, designers, coders, trainers of users, system operators, trouble-shooters, maintainers, and salesmen.

My first major project, Autokon, resulted in a highly successful CAD/CAM product that went into production in 1963 and was used by shipyards all over the world for more than 30 years. It is worth noting that this project could probably not have happened today. The current fashion is to let end users dominate research projects. The nebulous Autokon project could not have survived a head on competition with real and urgent shipyard investment needs. Or it would have failed if academic research were permitted to dominate; there were many interesting problems that could have diverted the project from its strictly utilitarian goals. The project achieved a delicate balance between these two forces; the developers focused sharply on the needs of the users, but they took the users' concrete requirements as symptoms of a general classes of problems that needed general solutions.

Home page:
��� http://heim.ifi.uio.no/~trygver/
Email:
��� trygver at ifi dot uio dot no
Snail mail:
��� Trygve Reenskaug
��� Morgedalsvn. 5A
��� N-0378 Oslo
��� Norway
Phone:
��� (+47) 22 49 57 27
��� (+47) 468 58 625

Short bio:

Trygve Reenskaug is professor emeritus of informatics at the University of Oslo. He has 50 years experience in software engineering research and the development of industrial strength software products. He has extensive teaching and speaking experience including keynotes, talks and tutorials. His firsts include:

• The Autokon system for computer aided design of ships. From the start in 1960, Autokon featured an end user programming language, structured programming, a digital product model, and a data base oriented program architecture. It was first deployed at the Stord shipyard in 1965, and sold a software-as-a-product from 1967. Autokon was deployed in major shipyards around the world well into the nineties. Its architecture remained unchanged, 30 years after the original development.
• The Prokon project with a communication oriented system architecture, object orientation, and personal programming from 1970.
• Model-View-Controller (MVC); the industry standard pattern for user interface architectures, in 1979.
• OOram role modeling method and tool from 1983
• The premier book on role modeling in 1995
• Trygve was a member of the UML Core Team and contributed the notion of Collaborations, a variant of role modeling, to the UML modeling language. (1997)
  The OOram Meta-Model... A proposal in response to OMG OA&D RFP-1 (.PDF)
• Data, Context, Interaction (DCI), a new programming paradigm (2008).
  

The goal of his current research is to create a new programming paradigm for readable and reviewable code that reflects the end users' mental models. One result is the DCI paradigm where the code is seen in three perspectives: The Data perspective for system state, the Context perspective for the runtime networks of communicating objects, and the Interaction perspective for the system's behavior. The research method is experimental and leads to object-based mental frames of reference, the object computer, and personal programming

The BabyIDE Interactive Development Environment is a proof-of-concept implementation illustrating the power and applicability of DCI.

Abbreviated bio:
Trygve M. H. Reenskaug (born in 1930) is professor emeritus of informatics at the University of Oslo. He has 60 years' experience in software engineering R&D for industrial strength SW products. He has extensive teaching and speaking experience including keynotes, talks and tutorials. His firsts include end user programming, structured design, and a data base oriented architecture (1960); software-as-a-product (1965);� communication oriented architecture and personal programming (1970); Model-View-Controller (1979); OOram role modeling method and tool (1983); the premier book on role modeling )1995);� and DCI, a new programming paradigm (2008). He is now working on object-based mental frames of reference, the object computer, and personal programming.

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(Last updated by Trygve 2019.10.05)