Articles
Value Stream Mapping Math: Lead Time Ladder Process "Branch"
Here's some often overlooked and misunderstood value stream mapping math.
The lead time ladder has two levels or “rungs.” The bottom rung is the process or processing rung on which the relevant process time is dropped down. This is usually pretty straightforward...unless there is a split or branch in the material, service or knowledge flow within the value stream.
Lean Math Phobia and Other Disorders
When discussing lean math with other folks, I often get some less than optimal responses. Of course, much of the time it's probably me!
In any case, this is how I would characterize the more non-value-adding responses to the subject.
Lean War Trophies
For millennia, warriors have taken war trophies to commemorate their victories.
Rules of Thumb
Lean quotes, 'laws' and Rules of Thumb; let's get a list going! How many can you add to this list?
Inventory Turns Calculation
A measure of the capital efficiency of an operation. One turn equals to the complete consumption and replenishment of the inventory in question. The number of inventory turns is usually based on a calendar year. Turns is just a ratio of consumption vs.
10X ROI
A contribution from one of our readers - Troy Bourgeois from Flow Consulting
The 10X ROI (Productivity Improvements in parallel with Sales growth)
Coefficient of Variation
One of the things that I have noticed as I look out at the world is – things change.
The weather changes, the tides change, and customer demand changes.
Of these three, variation in customer demand is perhaps of the most interest to lean practitioners, because, after all, if customer demand were constant, the challenge of designing and managing the value stream would be much simpler.
So accepting that in most cases customer demand does change, a sensible follow up questions are: By how much? And is the demand at least stable?
New Blog Launch – Lean Math!
In the fall of 2009, I launched Gemba TalesTM in anticipation of the Kaizen Event Fieldbook. Truthfully, it was something that I was told authors do - “You need to have a blog to promote your book.”
Well, sort of.
Blogs, in my opinion, should emanate less from a marketing imperative and more from a sense of sharing and community. That’s a whole lot more fulfilling.
