Judul: Customer Segmentation of PLN UPJ East Bogor Region Using Fuzzy C-Means
Abstrak: Electricity is a very crucial source of energy nowadays. This is proven by the increase of PLN customers every month. The increasing number of customers and the use of electricity should be followed by increasing the quality of service. PLN can make a better decision to increase its service by knowing its customer’s segmentations. The data of electricity usage is periodically kept by PLN and can be used for customer segmentation analysis. Customer segmentation can be conducted using clustering method such as Fuzzy C-Means algorithm. After the segmentation has been done, the characteristics of electricity usage of each segment can be identified, and the distribution of each segment can be visualized on a map to make it easier to see the distribution of each segment from its spatial aspects. The clustering process in this research is used four clusters, which represent the usage level, which are low class, medium class, high class, and very high class. As the result of the research, we found out that the low class users are the majoring, whereas the high class has the least users. Areas that have users from all segments are Babakan, Bantarjati, Baranang Siang, and Kedung Halang.
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Judul: Karakterisasi Pelanggan PLN Menggunakan Algoritma Fuzzy C Mean
Abstrak: Based on the technology point of view, CRM is a system tool in analyzing customers’ behavior based on customer histories data. One of the important tasks of CRM is identifying PLN customers’ behavior based on their behavior in using electricity. Customer identification is done by segmenting customers. In this research, the customer that will be segmented are home, business and industrial customer. The variable that used as a attribute in segmentation process are the duration of subscribing, total payment, discipline in paying and total electric usage. The system that developed in this research provided many choice of variable combination to be segmented. The goal is to provide many choice for PLN in segmenting customer. The method used for segmenting customer is fuzzy c-mean algorithm. To measure the segmentation accuration, the result of the clustering is validated by the Xie and Beni index method. The result of the research showed that business and home customer are more accurate if they are clustered into 3 clusters, while the industrial customer in some variable combination are more accurate if they are clustered into 3 clusters and the some variable combination are more accurate if they are clustered into 4 clusters. The result of customers’ character segmentation can be used as supporting data in making PLN’s business decision which is related to CRM.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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