Cause-effect diagram

At first, a clear statement should be made of the measured value y and which relationship exists between y and the parameters piypiy-ypm on which it depends. If possible, that should be done in form of a mathematical equation, y = ffp ypiy ->pm)- From this the sources of uncertainty for each part of the process should be derived and listed. Some of the parameters on their part depend from other variables pij. Also these dependencies have to be considered in form of equations or schemes, where pictograms, spreadsheets, and cause-effect diagrams (as schematically shown in Fig. 4.7) may be applied as useful tools. 

Use a Cause Effect Diagram (Technique 53) to document all the important causal relationships in the system. Then prioritize these relationships using a Cause Effect Matrix (Technique 54). These then become the initial focus of an attempt to trim the system using a trimming worksheet. 

With an optimized innovation ready for the market, it s time to improve and transition the project to its owners for ongoing operation. Use the Process Behavior Charts and Control Plan techniques during and after this transition. Also use the Cause Effect Diagram and Cause Effect Matrix to diagnose, solve, or at least mitigate any implementation problems encountered. 

Use a Cause Effect Diagram (Technique 53) to determine the root cause for each potential error. This is a critical step in mistake proofing that is often missed because too many people confuse errors with defects. For example, motion sensor failure is a defect motion sensor zone set incorrectly is an error. You can only truly solve a problem at the error level, so make sure you understand the difference. 

Process capability (see Technique 37) is the metric by which you know if you are having any performance issues or defect problems to solve. Once you use process capability to determine this, you then use a Cause Effect Diagram to start analyzing the problem. 

The Cause Effect Diagram is also called a fishbone diagram because of its resemblance to a boned fish. Fishbone diagrams were first demonstrated in the 1940s by Dr. Kaoru Ishikawa, a Japanese engineer. He wanted a simple, graphical way to show the relationships between the inputs and outputs of a... 

Scenario In the DVD-by-mail example from the Cause Effect Diagram (Technique 53), we looked for the root causes (inputs) contributing to customer dissatisfaction. We can also use a Cause Effect Matrix to discover... 

You can gather this information from your Process Map or Value Stream Map (Technique 46), or even a Cause Effect Diagram (Technique 53). 

Fig. 2 Cause-effect diagram of different hydrodynamic parameters in TBR with the process variables and properties of gas and liquid (cause effect, increasing effect and decreasing effect).

These techniques are more or less applicable for the different V V activities. For verifying the implemented simulation model, software engineering techniques are most widely used which refer to the techniques displayed in the upper left cell in Table 4.8. Cause-effect-diagrams visualize relations between events and system outcomes. They can be compared with commonly accepted assumptions about relations between events and system outcomes to detect unintended model behaviour. Similarly, animation and trace analysis often help modellers and managers to check the plausibility of the model s behaviour over time. However, not aU programming mistakes uncover themselves in an animation or in the analysed traces. Moreover, rare events are hard to detect since animation is applied for rather short time frames and trace analysis is applied for a... 

Cause-effect diagram (fishbone or Ishikawa diagrams)... 

Problem-solving methods This component looks for the application of quality-related problem-solving techniques such as cause-effect diagrams and design of experiments. 

Figure 21.12 Cause-effect diagram of the electrical power for fuel cells [29],...

FGS philosophy documents Performance criteria selection Assessment of detector technology Detector placement study Detector coverage assessment Cause—effect diagram Assessment of FGS functional safety FGS specifications Testing and maintenance supports... 

Cause—effect diagram Cause and effect diagrams are normally included as basic documents in philosophy documents. FGSs are typically used to initiate typically the following functions automatically or manually ... 

Cause-Effect Diagram A graphical display of the causes linked to an effect. 

Figure 13.7 Basic outline of a cause-effect diagram.

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