Have any questions? mark@leanmath.com

Have any questions? mark@leanmath.com

Jun

18

2013

3

Jun

13

2013

2

By MarkRHamel

Recently a reader posed the following value stream mapping lead time related question(s). My experience, after facilitating more value stream mapping activities than I care to remember, is that it's not an uncommon question. In fact, it's a very good question.

I provided a quick answer...supplemented by a very sophisticated graphic (recently enhanced, in red, based on a comment from Sandor).

Jun

04

2013

0

Σ or Sigma is the Greek upper case capital letter S and is used in mathematics to represent summation or addition of a series of elements or set of data values.

x_{1}, x_{2}, x_{3}, ... x_{n} is a set of numbers. x_{1} is the first number in the set, x_{i} is the 'i'th number, x_{n} is the last of n numbers.

Elements can be simply adding up a set, or more involved such as summing squares or other algebraic equations.

May

28

2013

0

By lloucka

Haruhiko 'Harry' Matsumura wrote a comment "Hi, Sirs, Regarding square root law of inventory, I prepared a useful kaizen proposal paper to give my clients to address stock reduction by means of location."

May

22

2013

5

By MarkRHamel

Machine cycle time (*T _{cm}*) represents the actual time it takes for one machine to complete all of its operations on one piece, product, patient, file, etc.

May

14

2013

13

By MarkRHamel

Every Part Every Interval, also known as *EPEI* or *EPEx*, represents the frequency that different parts are produced or services provided within a fixed repeating schedule. This fixed repeating schedule is often graphically portrayed, for training purposes and as a scheduling visual control, as a wheel, with the different products represented by alphas (A, B, C…) and the wheel indexed clockwise to follow the intended sequence.