Articles & Presentations

Articles & Presentations

The Wedge Model

  DESCRIPTION OF THE WEDGE MODELTM By Robert J. Halligan FIE Aust CPEng Project Performance International Pty Ltd P.O Box 2385 Ringwood North Vic 3134 Australia Ph: 61-3-9876-7345 email: rhalligan@ppi-int.com For a PDF version of this article, please click here Abstract The Vee Model, first defined by Rook in 1986, has served well as a …

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Requirements Analysis that Works!

Robert Halligan, FIE Aust Managing Director, Project Performance International Email: rhalligan@ppi-int.com Introduction: Innumerable studies have concluded that requirements problems are the single biggest contributor to cost overruns, schedule slippages and loss of capability in systems and software projects. Cost impacts alone of 10%, 20%, 50%, 80% and more are regularly reported by practitioners and researchers. …

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BUILDING A GREAT “Work” Breakdown Structure

by Robert J. Halligan, FIE Aust CPEng IntPE(Aus), Project Performance International Tel: +61 3 9876 7345              email: rhalligan@ppi-int.com 1.           INTRODUCTION TO WBS/PBS 1.1         What a WBS Is and Isn’t        Let’s get one thing straight. A “Work” Breakdown Structure (WBS) isn’t a breakdown of work. WBS is a really, really bad …

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Requirements in Context

What is a requirement? An excellent place to look for a definition is always a universally recognized dictionary. Too many times we redefine terms because we can, and then we end up adding to the plethora of definitions already in existence and thus contributing to further confusion. The Merriam-Webster Dictionary defines a requirement as: “something …

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Does Systems Engineering Work?

Assessing the Effectiveness of SE By René King, Senior EngineerProject Performance International Systems Engineering (SE) practitioners and researchers have claimed many benefits of applying SE including improved product definition and development and enhanced performance of businesses. It is no secret that applying a SE process to development can mean a slightly longer problem definition phase, …

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PMI October Event Summary – Unlearn Agile

by Caitlyn Liu Project Performance International In October, I was given the opportunity to attend one of the monthly events run by the Project Management Institute’s Melbourne Chapter. The event, which was themed ‘Unlearn Agile’, offered a refreshing viewpoint on the widespread application of Agile in today’s organisations. Presented in an interesting yet insightful way, …

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VOC IS GREAT! QFD IS NOT!

Robert Halligan, FIE AustManaging Director, Project Performance InternationalEmail: rhalligan@ppi-int.com View this post on LinkedIn A client asked me during the week why I do not advocate the use of Quality Function Deployment (QFD). I feel the answer is important, so here goes. The main reason is that QFD weights Measures of Effectiveness MOEs (which it …

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Systems Engineer, or Systems Engineering?

Robert Halligan, FIE AustManaging Director, Project Performance InternationalEmail: rhalligan@ppi-int.com View this post on LinkedIn Bethany Smythe asked me recently for a view on why the candidate pool of Systems Engineers in the market appears to be so tight – particularly SEs with in-depth hardware and software backgrounds. My reply started with the premise that engineers who …

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A set of requirements 132 years old

Robert Halligan, FIE AustManaging Director, Project Performance InternationalEmail: rhalligan@ppi-int.com View this post on LinkedIn I owe this one to my colleague Paul Davies, who unearthed a set of requirements from 1888, 132 years ago, by the UK company Barr and Stroud. Barr and Stroud was a market leader in optronics, particularly rangefinders and submarine periscopes, latterly …

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Comparison of PPI’s Football Diagram vs MIL-STD-499B Draft Fig B, 6 May 1994

Robert Halligan, FIE AustManaging Director, Project Performance InternationalEmail: rhalligan@ppi-int.com View this post on LinkedIn Commonalities: 1.   PPI’s Football Diagram uses the same graphical concept. Differences: 1.   MIL-STD-499B makes no provision for concurrent (simultaneous) engineering. PPI’s Football Diagram makes explicit provision for concurrent engineering. 2.  MIL-STD-499B uses the term “Functional Analysis” synonymously with “develop functional solution”, ignoring the fact that …

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Benefits of Model-Based Systems Engineering

Robert Halligan, FIE Aust Managing Director, Project Performance International Email: rhalligan@ppi-int.com View this post on LinkedIn I am sometimes asked about the benefits of model-based systems engineering (MBSE) design methods.  The model-based design (MBD) aspect of MBSE is a way of helping get design right the first time, reducing development costs and timescales, where the …

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