VOC Is Great! QFD Is Not!
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 […]
Articles & Presentations
Systems Engineer or Systems Engineering? Part 1
Editor’s Note: On the 13th of June 2020, PPI’s Managing Director published an article about the concept of systems engineers versus systems engineering. This topic […]
A set of requirements 132 years old
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 […]
Integrating PM and SE: Summary of Articles Originally
by Ralph Young SyEN 54 – June 21, 2017 Main challenge of the book: how to successfully bring together two established and valued disciplines to accomplish a critical […]
Comparison of PPI’s Football Diagram vs MIL-STD-499B Draft Fig B, 6 May 1994
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 […]
Benefits of Model-Based Systems Engineering
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 […]
A Requirements Analysis Frenzy
I am off to Silicon Valley this week to lead a requirements analysis for a client. We will start with some requirements from marketing on what the user is to be able to do, and some product requirements put […]
Functional Design – Traps For The Unwary
Functional design is one of the foundation practices of Model-Based Systems Engineering (MBSE). But there are plenty of ways of doing it wrongly and losing the benefits. Here is PPI Director […]
Application Guidance on ISO/IEC/IEEE 15288:2015
The purpose of this paper is to provide information for consideration by any user, or potential user, of ISO/IEC/IEEE 15288:2015, with a view to maximise the value that can be achieved in relation to ISO/IEC […]