Judul: Membangun Sistem Inferensi Fuzzy Berdasarkan Fuzzy Subtractive Clutering untuk Kasus Pelanggan Telepon
Abstrak: Pelanggan bisnis di PT. Telkom Bogor merupakan pelanggan yang potensial, karena memiliki kontribusi yang sangat besar bagi perusahaan. Ratarata 80% pendapatan perusahaan berasal dari pelanggan bisnis. Oleh karena itu diperlukan kemampuan untuk mengidentifikasi pelanggan, agar produk-produk yang dikeluarkan oleh PT. Telkom dapat memenuhi keinginan pelanggannya. Sistem yang digunakan pada penelitian ini adalah sistem inferensi fuzzy (FIS) berdasarkan fuzzy subtractive clustering (FSC). FSC menghasilkan deretan pusat cluster, nilai derajat keanggotaan dan sejumlah cluster yang dapat menjadi informasi untuk membangun FIS. Cluster yang terbentuk dari hasil FSC dilakukan uji validitasnya dengan metode kekompakan dan pemisahan (compactness and separated). Sehingga cluster yang diambil untuk membangun FIS adalah cluster yang terbaik. Selanjutnya untuk melihat tingkat kesalahan hasil output FIS dilakukan tes dengan metode root mean square error (rmse). Berdasarkan hasil FSC dan uji validitas yang dilakukan cluster yang valid pada kecamatan di Kota Bogor adalah yang memiliki dua, tiga dan empat cluster. Nilai output FIS yang didapat menunjukan perbedaan yang tidak jauh dengan output sebenarnya, terbukti dengan hasil rmse yang kecil disetiap kecamatan di Kota Bogor.
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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: Acute Oral Toxicity Lethal
Dose 50 (LD50) of Cayenne Pepper (Capsicum annuum) Infusion in DDY Strain
Mice (Mus musculus)
Abstrak: In recent years, there has been a growing interest in herbal remedies such as cayenne pepper which is known for its versatility beyond its culinary use. Cayenne pepper’s phytochemicals, including capsaicinoids, carotenoids, phenolic compounds, vitamins, and minerals, offer antioxidant, antimicrobial, and antiinflammatory properties, making it a valuable ingredient in various fields such as veterinary medicine, agro-food, cosmetics, and pharmaceuticals. However, concerns regarding the potential risks of cayenne pepper consumption as herbal medicine arise. This study aims to determine the acute oral toxicity lethal dose 50 (LD50) of cayenne pepper infusion in female DDY strain mice and its effects on the mice's organs. The research involved 20 DDY strain female mice divided into 4 groups which are control group (administered with distilled water) and treatment groups that are given cayenne pepper infusion at doses of 5, 10, and 15 g/kg BW orally. The observed variables included mortality, clinical symptoms, physiological responses, and organ weight. Acute toxicity testing indicated that the cayenne pepper infusion falls into the category of practically non toxic formulations. Administration of the cayenne pepper infusion up to a dose of 15 g/kg BW did not induce toxicity symptoms, such as clinically pathological symptoms, macro anatomical organ changes, or mortality nor affect both weight gain and loss.
Keyword: cayenne pepper, infusion, acute oral toxicity, DDY strain mice, herbal medicine