The Poisson distribution is a discrete distribution. This short article focuses on 4 formulas of the Poisson Distribution. It is also known as the rare event distribution. It has application in a homogeneous Poisson princess and with renewal theory. Continue reading
As with any process, there will be opportunities to make improvements. By monitoring and reviewing your program you will find what is working well and what is not. Continue reading
Taking steps to deal with risk is an essential step. Knowing about and thinking about risk is not the same as doing something about risk. Continue reading
Well, not really.
If the risk is acceptable to the stakeholders, then we can simply continue with the current plan and monitor or any new risks or changes in our understanding of the existing risks. Continue reading
Uncertainty is risk.
In recent years more organizations and international standard bodies have focused on risk management. Identifying, analyzing, and mitigating uncertainty in a systematic manner. Continue reading
As my mother would remind me, one should listen twice of often as speaking. Something about the ratio of ears to mouths in the population. I have to agree with her, that one can learn a lot by listening.
Listening may not seem to be a skill that one needs to master. Yet, how often have you walked away from a meeting where one or more participants obviously were not listening? How often are points repeated in an effort to be heard?
High temperature & humidity is a common test condition. For specific failure mechanisms there are models available (or you can create a model) to determine the translation from test to use conditions.
These acceleration models generally only apply to one specific failure mechanisms and do not apply to a system level estimate of life. If the failure mechanism is the dominate failure mechanism for the product, then an ALT exploring just that mechanisms would provide a life estimate. Continue reading
For example, a home kitchen toaster may be used for a few cycles during breakfast time in your home. In the lab, we can avoid having to wait the day of idle time and just make toast more often than just at breakfast to accelerate the operation of a toaster. Continue reading
You may have worked under the guidelines of a quality triangle, also known as a project management triangle, iron triangle, or project triangle.
Why is that? Why the limits to our ability to create a product or improve a system? Continue reading
You’ve seen the internet meme’s about the difference between leadership and management. There is a difference and while not everyone is going to be in top management, everyone can (and should) be a leader.
As a reliability professional, you are conveniently looked to for leadership. You are expected to use your knowledge and skill to solve problems. To help teams solve problems. To improve the reliability performance of your system and across your industry. Continue reading
In a recent Seth Godin blog, Counting beans he talks about the eventual costs of little compromises. The immediate benefit may be celebration worthy, yet
But overlooked are the unknown costs over time, the erosion in brand, the loss in quality, the subtraction from something that took years to add up.
This certainly applies to reliability as well. Deferring maintenance just one more month, addressing one more software bug can be done after shipping, and similar small shifts erode reliability of your system. Continue reading
A customer or someone using your product brings a set of expectations to the experience. The range of expectations may range from very little to very high functional, value production, and durability.
Failures are defined by customers. Continue reading