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All Journal VARIANSI: Journal of Statistics and Its Application on Teaching and Research Jurnal Abdita Naturafarm
Rahman, Dela Juliarsih
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Religion Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Health Professions Mathematics Other

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Strengthening Anti-Bullying Values Through Education and Social Campaigns at SMPN 7 Kota Bangun: Penguatan Nilai Anti-Perundungan Melalui Edukasi dan Kampanye Sosial di SMPN 7 Kota Bangun Jailani, Ahmad; Alza, Muhammad Gibran; Aulia, Alda Rizki; Al Farisy, Hanif; Zahra, Khansa Aprillia; Fatimah, Sindi; Wardhana, Nicko; Pramana, Muhammad Yoga Adhi; Nadirah; Rahman, Dela Juliarsih; Ahmad, Islamudin
Jurnal Abdita Naturafarm Vol. 3 No. 1 (2026): J Abdita Naturafarm
Publisher : B-Creta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70392/jan.v3i1.30

Abstract

This study aims to strengthen anti-bullying values through education and social campaigns at SMPN 7 Kota Bangun. The method applied was a social campaign using presentations, interactive discussions, and educational posters, followed by evaluation through a post-test. The post-test results revealed that the majority of students understood that bullying, both physical and non-physical, negatively affects social relationships and the learning environment. Students also emphasized the importance of sanctions for perpetrators, the obligation to help peers, and the shared responsibility of the school community in preventing bullying. However, some students still held misconceptions that bullying is only dangerous if it is physical. Campaign documentation illustrated students’ active engagement during socialization sessions, the use of posters as media, and a spirit of solidarity in supporting anti-bullying values. Challenges encountered included limited time and students’ hesitation to report cases, while solutions proposed involved continuous campaigns, teacher involvement, and peer-to-peer approaches. Therefore, this program has proven effective in strengthening awareness and anti-bullying values, although further efforts are needed to ensure a more sustainable impact.
Comparative Analysis of DES-Brown and DES-Holt Methods in Forecasting the Stock Price of PT Telekomunikasi Indonesia Tbk Rahman, Dela Juliarsih; Nurmayanti, Wiwit Pura; Pangruruk, Thesya Atarezcha; Widyaningrum, Erlyne Nadhilah; Hasanah, Siti Hadijah
VARIANSI: Journal of Statistics and Its application on Teaching and Research Vol. 8 No. 1 (2026)
Publisher : Program Studi Statistika Fakultas MIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/variansiunm486

Abstract

This study aims to dermine the best forecasting method for the stock price of PT Telekomunikasi Indonesia Tbk using the Double Exponential Smoothing (DES) Brown and DES-Holt methods. The data used consist of stock prices from January 2019 to September 2025. The DES-Brown method employs a single parameter, while DES-Holt uses two parameters. Forecasting accuracy is evaluated using Mean Absolute Deviation (MAD), Root Mean Squared Error (RMSE), and Mean Absolute Percentage Error (MAPE). The results indicate that the DES-Brown method with a smoothing parameter produces the smallest forecasting errors compared to the DES-Holt method, with MAD, RMSE , and MAPE . Therefore, it can be concluded that the DES-Brown method is the most suitable approach for forecasting the stock price of PT Telekomunikasi Indonesia Tbk.
Co-Authors Ahmad Jailani, Ahmad Al Farisy, Hanif Alza, Muhammad Gibran Erlyne Nadhilah Widyaningrum Fatimah, Sindi Hasanah, Siti Hadijah Islamudin Ahmad Nadirah Nurmayanti, Wiwit Pura Pangruruk , Thesya Atarezcha Pangruruk Pramana, Muhammad Yoga Adhi Siswahyudianto Wardhana, Nicko Zahra, Khansa Aprillia