# I4.0I: A New Way to Rank How Involved a Company Is in the Industry 4.0 Era
## 5 Case Study  
In this section, we present a case study of the created index by applying the methods described in the previous sections in a company, here called Company A to preserve its image. We start by exhibiting the results obtained from the questionnaire sent to that company, which are represented in Table 6.  
Figure 4: Low-level abstraction of our paper’s block diagram.  
Using these answers and the values presented in Table 3, we calculated the I4.01 related to each year by summing all \(W_{n,L}\) values related to the technologies marked and afterward, we generated a comparison table between the results obtained and the profits' data given by the company (Table 7).  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Mark the technologies used in the following years:** & & & \\ \hline
**Technology** & **2010** & **2015** & **2020** \\ \hline Sensors & X & X & X \\ \hline Actuators & X & X & X \\ \hline Programmable logic controllers (PLC) & X & X & X \\ \hline Supervisory control and data acquisition (SCADA) & & & X \\ \hline Manufacturing execution systems (MES) & & & \\ \hline Enterprise resource planning (ERP) & X & X & X \\ \hline Energy monitoring & & & \\ Energy improvement & & & \\ \hline Traceability of final products & & & \\ \hline Traceability of raw materials & & & \\ \hline Automatic nonconformities identification & & & \\ \hline Industrial Robots & X & X \\ \hline Machine-to-machine (M2M) communication & X & X \\ \hline AI for production & & & \\ \hline AI for maintenance & & & \\ \hline Virtual commissioning & & & \\ \hline Additive manufacturing & & & \\ \hline Flexible lines & X & X & X \\ \hline Passive smart products & X & X \\ \hline Active smart products & & X \\ \hline Autonomous smart products & & X \\ \hline Remote monitoring & & & \\ \hline Collaborative robots & & & \\ \hline Remote operation & & & \\ \hline Augmented reality & & & \\ \hline Virtual reality & & & \\ \hline Digital platform with other companies’ units & & X \\ \hline Digital platform with suppliers & & & \\ \hline Digital platform with customers & & & \\ \hline
**Technology** & **2010** & **2015** & **2020** \\ \hline Internet of things (IoT) & & & X \\ \hline Cloud & X & X & X \\ \hline Big data and analytics & & & \\ \hline
**Regarding the company’s profit:** & **2010** & **2015** & **2020** \\ \hline Type the year’s profit considering 2010 = 1 & 1 & 1.6 & 2.3 \\ \hline \hline \end{tabular}
\end{table}
Table 6: Company A’s questionnaire resultsUsing the data from company A on Equations (3)-(6) to exemplify the numerical evaluation, we obtained the following:  
* Profit's growth rates (PGR): \[PGR_{2015-2010}=69.57\%-43.48\%=26.09\%\] \[PGR_{2020-2015}=100\%-69.57\%=30.43\%\]
* I4.0I's growth rates (IGR): \[IGR_{2015-2010}=53.23\%-21.57\%=31.66\%\] \[IGR_{2020-2015}=100\%-53.23\%=46.77\%\]  
Analyzing the results, we can see that Company A's \(IGR_{2015-2010}\) and \(PGR_{2015-2010}\) were very similar, presenting a range of approximately \(\pm 5\%\). When we analyzed the company's \(IGR_{2020-2015}\) and \(PGR_{2020-2015}\), we saw that the company's I4.0I grew about 16% faster than its profit.