Why formalize root cause analysis? There are many approaches to determining the root of our problems. In the automotive world, there are two typical approaches, the 8D or the 8 Discipline, or the A3 (named for the paper size). We will not go into the details of either of these approaches but you can find […]
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We are composing a glossary of test terms and we take one from that work today and discuss here. A development organization can be structured in many ways. The development and testing can be essentially one department under one management structure, or these two areas, development and test can be separated each with a respective […]
Independent Test and Verification We are composing a glossary of testing terms and we take one from that work today and discuss here. We welcome any and all that would like to contribute. Today we discuss development and independent test and verification. A development organization can be structured in many ways. The development and testing […]
There have been some twitter discussions going on about the validity of the term end-to-end (E2E) testing. I have been around this concept for many years and still see the validity in the term and the approach. To that end, I will describe as quick and briefly as I can since this is a blog […]
by: Shawn P. Quigley Whereas we have discussed some of the possible flaws in measurements we can all still agree that they are needed to provide both improvement in processes and the organization. However, other aspects of obtaining data for the production of quantifiable information: trend analysis and process evaluation, is the human factor both […]
by: Shawn P. Quigley & Jon M Quigley Measurements and Bias Solely by the process of observing something we can alter the thing which is being observed. This is a known as the observer-expectancy effect. This effect is born out of conscience and subconscious biases of the observer. In the case of observing people, we […]
Verification and Validation The definition for verification and validation can be found at[1]: We must express some disagreement with the activities associated with the individual areas. For example, testing is not limited to Validation. Testing is also a function of verification as we will use these techniques to understand if the instantiation of the […]
Testing Complex and Embedded Systems What set of conditions could cause this event to occur? When we have elicited all we can from the customer about fault information, it is time to proceed further in our analysis. This next step requires investigation of the design to understand how the symptom of failure described could happen […]
The Emissions Tango There is so much to learn from this case for those who develop products for a living and automotive products in particular. Understanding the impact of concept selection and testing of the product on the project success and product quality is important. The early decisions we make regarding the development of the […]
Below is an excerpt of our book Testing of Complex and Embedded Systems Pries, K., & Quigley, J. (2011). Chapter 4. In Testing Complex and Embedded Systems (pp. 33-35). Boca Raton, FL: CRC Press. Basic Principle of Testing The verification and test group is there to provide some critical and unbiased review of the […]