Cast your mind back to (or if you’re young enough, just imagine!) the days before the world wide web. You’re doing some research for studies or your hobby, sitting in a library surrounded by books. You have so many different places to look for information, in lots of different formats, and perhaps your local library doesn’t even have all the sources you need. You have to jump in the car and travel to collate all the necessary input.
Fast forward to the present day, and a web browser is your gateway to a wealth of information. Search... [More]
You need a good information model to carry out effective impact analysis. A software impact analysis report usually covers just the requirements for the relevant part of the code and the test used to verify the code. In a model-based paradigm, however, the effect of a change at the software level can be much greater.
A small change at the code level can impact many requirements and model elements, traversing all the way up the requirement and model hierarchy. Therefore, the information model should be consistently applied... [More]
It is my pleasure to announce this year's IBM Champions for Rational Software! Earlier this year, we asked you to nominate the leaders in your technical communities who represented the three "R's" of being a champion : Being responsive, respected, and recognized in the technical community. The following new and returning Rational champions stood out among the crowd. They are experienced in using Rational solutions to solve real business problems and are recognized experts in their field. They spend their own time, energy and resources... [More]
The intent of this post is to provide an insight into the world of the systems engineer that is used to working on large embedded projects. Meaning engineers that design and develop products that fly, move on tracks or wheels and float, or in some cases submerge. It is a summary of a webinar I gave in February that has since been transcribed and turned into a white paper
What is it?
Systems engineering spans all the disciplines involved in developing a product. It provides the means to specify the... [More]
Built in the mid to late 90’s, the Mars Climate Orbiter was fitted with the most advanced technology of its time, and it featured dual redundant systems and triple redundant software copies! What could possibly go wrong?
It launched in December 1998 - everything was going according to plan. By September 1999, it approached Mars and attempted to go into orbit. Then - poof - it went out of radio contact! Two days later, it was officially declared "lost". The probe ventured too close to Mars, plummeted into its... [More]
In my job, I routinely find myself talking with clients about using modeling to support their systems engineering activities. The discussion usually focuses on the challenges a team is having, and most of their difficulty can often be traced back to a lack of understanding of what modeling is. This is the same issue I saw many students struggling with when I taught introductory modeling classes. In this blog post, I will try to present modeling as simply a formalization of what we, as humans, do all the time: abstract. We do this without even... [More]
With the announcement of RELM in September, the growing importance of systems engineering has been a topic of discussion. We sat down with four of our Rational systems experts to answer some common questions about design, agile, modeling and architecture.
Meet the leaders
Dr. Keith Collyer is an expert in Requirements and Systems Engineering. He trained as an electronic engineer, later moving into software development. His interest in the “people” aspects led him into project management, quality assurance and processes, never losing... [More]
Standards and tools use signals potential acceleration of productivity and an innovation curve
A century ago, assembly line production caused a paradigm shift in the automobile industry. The transition from handcrafting each car to manufacturing based on a standardized template, using tools, led to an exponential increase in productivity and efficiency. With the production of software now constituting a significant proportion of the value of a modern car, the stage is set for a similar boost in efficiency with widespread adoption of tools... [More]
Moving to Collaborative Design Management (and why you should care!) by Neil Patterson and AnnMarie Stenglein Teams of capable individuals carefully chosen and assembled, for whatever purpose, are almost always “greater than the sum of their parts,” as the saying goes. Think of how, in the hands of a master, all 16 chess pieces become an invincible force; or the 1927 New York Yankees (including Lou Gehrig, Babe Ruth, you may need to look that one up) -- both offer examples of overwhelming power, grace, and skill that no one piece or player in... [More]
A Practical Approach to Quality!
If your software and
systems development team is under 10 people, including coding, testing, and
project management, then your projects may not experience huge difficulties associated
with traceability -- i.e., the discipline that links requirements to test case
and test results. But for larger teams of 30 or more, where even a medium-size
project involves 5,000 requirements and 10,000 test
cases, the complexity can feel overwhelming.
this: If it takes 20 minutes to link the... [More]