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Siti Sendari
Universitas Negeri Malang
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Studi Prediksi Usia Operasional Transformator Berdasarkan Diagnostik DGA pada Gas Residu dalam Minyak Isolasi Berbasis Prinsip Etika Terhadap Pengumpulan Data Rudi Irmawanto; Arif Nur Afandi; Hakkun Elmunsyah; Siti Sendari
RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer) Vol. 9 No. 1 (2026): RESISTOR (Elektronika Kendali Telekomunikasi Tenaga Listrik Komputer)
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/resistor.9.1.25-38

Abstract

Penelitian ini merupakan studi kuantitatif dengan pendekatan studi kasus yang memanfaatkan data hasil uji Dissolved Gas Analysis (DGA) pada minyak isolasi transformator selama periode 2017 hingga 2025. Proses pengumpulan dan penggunaan data dilakukan dengan menerapkan prinsip etika penelitian, termasuk memperoleh izin resmi dari pemilik aset, memastikan kerahasiaan data operasional, menjaga anonimitas identitas transformator, serta memastikan bahwa data tidak dimanipulasi, tidak direkayasa, dan digunakan hanya untuk tujuan ilmiah. Peneliti juga memastikan bahwa prosedur pengambilan sampel minyak tidak mengganggu operasi sistem tenaga dan dilakukan sesuai standar keselamatan kerja. Analisis DGA dilakukan berdasarkan standar IEEE C57.104-2019 dan IEC 60599 menggunakan metode Total Dissolved Combustible Gas (TDCG), Key Gas Method, Roger’s Ratio, dan Segitiga Duval. Setiap metode digunakan untuk mengidentifikasi potensi gangguan internal, tingkat keparahan, dan pola perkembangan gas terlarut. Prediksi umur transformator dilakukan menggunakan regresi linier dengan variabel bebas berupa konsentrasi gas yang meningkat signifikan. Hasil menunjukkan kenaikan CO dan C₂H₆ sebagai indikator thermal aging dan degradasi selulosa, sementara hasil TDCG menempatkan kondisi transformator masih dalam batas operasional. Model regresi memperkirakan sisa umur pakai 27,1–27,4 tahun. Temuan ini menekankan pentingnya analisis teknis yang akurat serta pengelolaan data berbasis etika untuk mendukung strategi pemeliharaan prediktif jangka panjang.
Opinion Analysis for Emotional Classification on Emoji Tweets using the Naïve Bayes Algorithm Sendari, Siti; Zaeni, Ilham Ari Elbaith; Lestari, Dian Candra; Hariyadi, Hanny Prasetya
Knowledge Engineering and Data Science
Publisher : citeus

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Opinion Analysis is a research study needed to social media, since the content could become a trending topic and has a significant impact on social life. One of the social media that have a big contribution to cyberspace and information development is Twitter. In the Twitter application, users can insert images that represent emotions, facial expressions, or icons. Emoji is a graphic symbol in the form of an image to express a thing, with the Emoji, a text can be read and understood according to its meaning because the image represents it. Of the several things that have been mentioned then, the researchers conducted research on the classification of tweet content based on the use of Emojis. This study aims to determine the emotional uses of Twitter in one period. Every tweet on the Twitter timeline, which contains both text and Emojis, will be classified according to several categories. The algorithm used was Naïve Bayes. It calculated the probability of Emoji tweet to obtain the text classification with Emojis. The results of the classification of emotions are grouped with three categories, namely "angry," "joy," and "sad," it showed that the category "joy" had become the emotional trend of Twitter users where Emojis (x1f60a) dominate the most. Meanwhile, the accuracy of the algorithm used to reach 90% with a 70:30 holdout technique.
Co-Authors A.N. Afandi Abdul Wafi Abdur Rohman Achmad Jefri Achmad Jefri Achmad Jefri Adika Prana Ihsanuddin Afnan Habibi, M. Agung Bella Putra Utama Agung Endro Nugroho Agus Rahma Dani, Ayunda Aji Prasetya Wibawa Alief Fajar Syahputra Amalia Nurutami Amalia Prameswari Alvina Ana Nuril Achadiyah Andi Khoirudin Andis Wijaya Anik Nur Handayani Anisatul Qomariyah Arengga Wibowo, Danang Arengga, Danang Argeshwara, Dityo Kreshna Arifin, Samsul Aripriharta - Arnista Vindriyanti Ashar, Muhammad Ashrofil Muzaki Ayunda Agus Rahma Dani Bagaskoro, Muhammad Cahyo Baliyah Ahmad Fathoni Benny Agung Prasetyo Billah, Egi Nursari Burhanudin Yusuf Abdullah Ar Ramadhan Cahyaning Wulandari Cahyaning Danang Arengga Wibowo Dava Desti Yanti Dendi Mukti Putranto Desti Yanti, Dava Devi Dwi Purwanto Dhiyaurrahman Fakhruddin Dian Candra Lestari Didik Dwi Prasetya Dwi Mukti Asmoro Sari Dwi Puri Fatmawati Dyah Lestari Effendi, Muhammad Minhaj Eko Noerhayati Eli Hendrik Sanjaya Elista Kartika Sari Faiz Syaikhoni Aziz Fajar Syahputra, Alief Fatma Cahyaningrum Fitri, Shofiana Franky Melky Giri Wahyu Wiriasto Guyub Raharjo Hakiki, A.Riyan Rahman Hakkun Elmunsyah Hanny Prasetya Hariyadi Haq, Sigit Prasetyo Harits Ar Rosyid Hariyadi, Hanny Prasetya Hary Suswanto Heru Wahyu Herwanto Hidiyah, Tabita May Hsien-I Lin I Made Wirawan Ilham Ari Elbaith Ilham Ari Elbaith Zaini Imam Tree Utomo Ira Kumala Sari Ira Kumalasari Irham Fadlika Irmawanto, Rudi Irvan, Mhd James Aditama Januar Arief Muhammad Joshua Andrian Joumil Aidil Saifuddin Kamil Faqih Kartika Sari, Elista Khoiruddin Asfanie Kotaro Hirasawa Kumalasari, Ira Langlang Gumilar Lestari, Dian Candra Listyo Yudha Irawan M. Afnan Habibi M. Bagus Arifin Made Radikia Prasanta Mahfud Jiiono Mahfud Jiono Mario Leo Nardo Melta Dhemahestri Misik Rahayu Oktaningsih Moch. Burhanuddin Alfarobbi Mochamad Farhan Ali Irfani Mochammad Haidar Ridho Mochtar, Norrima Moh. Zainul Falah Mohammad Yussril Asri Mokh Sholihul Hadi Mokhammad Nasrulloh Mokhtar , Norrima Binti Muhamad Syamsu Iqbal Muhammad Aditya Firnanda Muhammad Arif Hermawan Muhammad Fajar Saifuddin Muhammad Hanif Abdur Razaq Muhammad Tahfidlul Azmi Muhammad Yoga Pranata Mukti Putranto, Dendi Muladi Mustika, Soraya N. Muzayana Muzayana Nastiti Susetyo Fanani Putri Nastiti Susetyo Fanani Putri Nastiti Susetyo Fanany Putri Ni’am, Faj’run Nobri Wicaksono Nur Halim Nurutami, Amalia Nuzul Zaeni Eki Ramadhanu Prana Ihsanuddin, Adika Prasetya Widiharso Prasetya Widiharso Prasetya Widiharso Prasetya, Didik Dw Prastiwi, Mellinia Regina Putri, Nanda Regita Rahma Puspitasari Ria Rahmawati Rina Dewi Indahsari Rindi Santika Agustin Ristanto Aji Prakoso Rizki Jumadil Putra Rizky Asilia Puspita Sari Rosmin, Norzanah Rumamby, Frendy Rocky Samsul Arifin Setumin , Samsul Setumin, Samsul Shofiana Fitri Shrestha, Rajendra Prasad Soraya Norma Mustika Soraya, Fenthy Soraya, Fenthy Suastika Yulia Riska Sumanti, Endang Sri Supardjan A. Margono Susilo, Suhiro Wongso Syaad Patmanthara Syabani, Muhiban Syafaat, Mokhammad Syafiq Ubaidillah Syamsul Arifin Syamsul Bachri Triyanna Widiyaningtyas Wahyu Sakti Gunawan Irianto Wahyu Tri Handoko Waridno, Aji J. T. Wibowo, Danang Arengga Wibowo, Dian S. Wibowo, Fauzy Satrio Wildan Iswahyudi Yogi Dwi Mahandi Yudhi Christianto Yuni Rahmawati Zaeni, Ilham Ari Elbaith Zulkarnain, Aldo Z. A.