1 Review of Standard Tools Mark E. Sampson EMIS 8340 Systems Engineering Tool—applying tools to...
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Transcript of 1 Review of Standard Tools Mark E. Sampson EMIS 8340 Systems Engineering Tool—applying tools to...
1
Review of Standard Tools
Mark E. Sampson
EMIS 8340
Systems Engineering Tool—applying tools to engineering systems
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Standard Desktop Tools
…according to a time & motion study by TI, Systems Engineers spend 50% of their time writing documents, 25% of their time re-entering the same information in different locations, 14% of their time futzing (technical term for getting documents to print correctly), and 30% of their time in meetings,…
…you’ll notice it adds up to greater than 100% due to average SE workweek of 60+ hours
One of the fundamental purposes of Tools is to accelerate your job.
[Sampson 1994]
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Keeping the architect ahead of construction crews
…analysis by TI, Gartner, and others shows 50% of programs go runaway. Standish claims the majority of those are caused by a failure to define, deliver, and keep-up-with requirements.
Runaway’s are characterized by late cycle changes, heroic integration efforts, …, and “architects documenting what the construction crews are building” rather than leading the way.
…lack of direction/leadership increases probability of a runaway.
Goal of tools is to keep the architect ahead of construction crew…it’s the carrot
[Sampson 1994]
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Why documents…
Given the amount of time spent on documents, it’s easy to get confused about what the systems engineering product is…
…a document? Or a design?
A discussion about wheelbarrows.
DESIGN
SPEC.
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DESIGNSPEC.
DESIGNSPEC.
Documents…a means of conveying design decisions
Tools are used to accelerate the capture and delivery of design information. Documents are one way to do that.
Upside of documents:• Codify the design• Communication• Culturally acceptable• How you get paid
The downside of documents:• Paper based baselines & management systems• Nobody reads them• Obsolete by the time you print them• Give you a good feeling about project if documents are on schedule
DESIGNSPEC.
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Standard Desktop Tools—Word Processors
Word, Word Perfect, Framemaker, Interleaf, and other intelligent word processors
• Simple: Word, Word Perfect,…for reports, documents,…• Complex: Framemaker, Interleaf…books, etc.
Using Field codes/references tagging as a database
Page formatting languages(ROF with tagging)
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Standard Desktop Tools--Spreadsheets
Excel and other spreadsheets…
• Macros• Visual Basic
Spreadsheet based systems engineering
Embedded applications…• Crystal Ball• Matlab• SAS• Risk Managers
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Standard Desktop Tools--Presenters
Powerpoint and other presentation tools…
“Powerpoint engineering”
• Visual Basic• Animations
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Standard Desktop Tools--Databases
Relational: like Access, Paradox,…OracleObject: ObjectStore, Versant,…
• “Systems Engineers love to roll-their-own” • “Vast majority of requirements/traceability is held in Access”
Combine word processor with database:
Example: Rational Requisite Pro
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Standard Tools—Yellow Sticky Notes
Post-it® Sticky Notes
How used…• Brainstorming…example from class or my choosing
• Organizing information • Decomposition• …
Electronic version: http://www.post-it.com/wps/portal/3M/en_US/PostItNA/Home/Products/~/Post-it-Digital-Notes?N=3294647338+4327&rt=rud
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Google Drive
Provides: • Online, web-based collaboration and sharing• Document repository, CM,…• Course Assignment Status