y=f(x), or more accurately, y=f(x)+ Ɛ
-'y' represents the desired outcome, result, or goal you want to achieve.
-'x' represents the input, factors, variables, or elements required to create the outcome.
-'f' represents the function or process applied to the variables, by which they are modified, changed, or altered - the transformation processor.
-'Ɛ' represents some level of error or the amount of difference due to uncertainty or predictability when the process is applied and how near or far it is from the desired outcome.
Customers define requirements, needs, or wants. They have a vested interest in a project. They also pay for the project, support resource needs, and evaluate and use the results of the project. They provide the "Voice of the Project" and are considered the "Voice of the Customer."
Defining the Voice of the Customer (VOC) includes what the customers' requirements are for products and services and what their expectations are: both positive and negative, including likes, dislikes, problems, and suggestions.
The VOC asks what each customer desires, specifically what is important to them and what do they perceive is a defect in a quality or service.
To determine VOC, you can use surveys, focus groups, interviews, or observation.
The 5S tool is a Lean tool that allows examination of a process to identify non value-added elements: Sort, Straighten, Shine, Standardize, and Sustain.
1.Sort: Remove what is not needed.
2.Straighten: Organize what remains.
3.Shine: "Clean" the work area.
4.Standardize: Make sure a regular cleaning and maintenance schedule is in place.
5.Sustain: Embed 5S as part of the culture.
The 5 S method improves safety and communication, improves process flow, increases compliance, reduces space requirements, boosts morale, removes non value-added steps, and reduces time wasted looking for items.