Advanced Mathematics and Numerical Modeling of IoT

Table 9: Step 3F4 worksheet: misinterpretation of the results.

Step 4

: failure risk analysis

Step 5

: correction/action/result

Rating

∗

Decision tree

Reasons for failure

푆퐷

GRPN

With Controlmechanism

ProblemsDetectable

Continued

Correction Action

Result

Role in charge

Step3F4

3F4a

Too tired

9 8 2 0.874

No

Yes

Yes

Control

Confirmed by secondexamination

Confirmed by twoexaminers

Laboratorydirector

3F4b

Too busy

3 9 8 0.663

No

No

Yes

Control

Personnel access control andprovisionofasingletelephone

Replacement of laboratoryand telephone system

Generaldepartment

3F4c

Insufficient light

2 8 8 0.542

No

No

Stop

Provide a second

light source

Installation of new lights

Brighter lights

Generaldepartment

3F4d

Misunderstanding ofthemachinereport

8 6 4 0.836

No

Yes

Yes

Need to deal with Purchase new equipment

Equipment installed on agiven date (YY/MM/DD)

Procurementdepartment

∗푤

푆

=0.6

,푤

푂

=0.3

,and

푤

퐷

=0.1

.