# Expert Opinions on the Intranet-Based Security System in Industrial Electrical Switchboards
## 3 Methodology
### Statistics Used in Research  
In this research, descriptive and inferential statistics were used to analyze the opinions of the internet's efficiency and acceptance in the management of electrical switchboards using mean and standard deviation as defined in Equations (1) and (2). \[\overline{\text{X}}=\frac{\sum\text{X}}{\text{N}} \tag{1}\]  
\[\text{S.D}=\frac{\sqrt{\sum\left(\text{x}-\overline{\text{x}}\right)}}{\left( \text{N}\right)} \tag{2}\]  
where \(\overline{\text{x}}\) is the mean of the score, and SD is the standard deviation, x is the assessed score from the involved participants. N is the number of participants, and \(\overline{\text{x}}\) is the sum of the evaluation scores. The results of the intranet sensors system acceptance of efficiency are presented below. From Table 1, the results revealed that the efficiency of the intranet sensors system by the electrical switchboard technician had a high-level score ( \(\overline{\text{x}}\) = 4.13; SD = 0.696). When considering individual categories, the efficiency was at a high level in every category. The results can be sorted by the average, ranging from the smallest to the greatest. The first three in a top-down manner are as follows: (1) ability to record values of various functions of the device and generate graphs to observe changes or to identify malfunction devices effectively; (2) ability to support and make decisions in an operation, along with a notification system via SMS and e-mail to the administrator or project owner in industrial plants, buildings, and businesses ( \(\overline{\text{x}}\) = 4.17; SD = 0.784); (3) ability to capture operational images and send alerts via the application efficiently ( \(\overline{\text{x}}\) = 4.17; SD = 0.831), respectively. \begin{table}
\begin{tabular}{l c c c} \hline \hline
**Efficiency of the Intranet Sensors System** & \(\overline{\text{x}}\) & **SD** & **Efficiency Level** \\ \hline
1. The system is beneficial to the business & & & \\ owner, administrator, and project owner in & 4.13 & 0.800 & High \\ industrial plants, buildings, and businesses. & & & \\ \hline
2. The system is able to support the operation & & & \\ and decision making of the work, along with & & & \\ a notification system via SMS and e-mail to & 4.17 & 0.784 & High \\ the administrator and project owner in & & & \\ industrial plants and businesses. & & & \\ \hline
3. The system is able to manage materials and & & & \\ equipment for changes and repairs that will & 4.09 & 0.847 & High \\ be used in the future. & & & \\ \hline
4. The system is more efficient than & & & \\ traditional systems that rely on the experience & & & \\ of the operator in determining malfunction & & & \\ from electrical switchboard alarm systems. & & & \\ \hline
5. The system designs functionality and & & & \\ implementation of information to process & & & \\ data and report results from the & 4.09 & 0.867 & High \\ system quickly. & & & \\ \hline
6. The system is able to collect the operating & & & \\ parameters of the equipment and create & & & \\ graphs to observe changes or identify & 4.21 & 0.830 & High \\ malfunctions effectively. & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Acceptance test results of intranet sensors system efficiency. As evident from Table 2, the users of electrical switchboards had high opinions of overall intranet sensors system acceptance ( \(\overline{\kappa}\) = 4.00; SD = 0.662), and regarding the mean of the entire section, the acceptance level was high. The results can be sorted by the average, ranging from the smallest to the greatest. The first three descending order are as follows: (1) comparative benefit ( \(\overline{\kappa}\) = 4.13; SD = 0.703); (2) observable aspect ( \(\overline{\kappa}\) = 4.04; SD = 0.744); (3) testable aspect ( \(\overline{\kappa}\) = 3.98; SD = 0.728), respectively.