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Analisis Perbandingan Peramalan Data Pemrograman Pasang Surut Anfor Dengan Data Pengukuran Pasang Surut Admiralty Pada Stasiun Cilacap anggraini, yeshe; Zakaria, Ahmad; Wahono, Endro Prasetyo; Mariyanto, Mariyanto
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 4 (2023): Edisi Desember 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i4.3857

Abstract

Pasang surut air laut merupakan suatu gerakan naik turunnya permukaan udara secara periodik sebagai akibat dari gaya tarik menarik antara bumi, bulan dan matahari. Analisa pasang surut sangat diperlukan dalam penentuan posisi mean level maupun prediksi muka air laut yang dapat dianalisis dengan program admiralty dan program anfor. Pada penelitian ini dilakukan analisis terhadap empat pasang surut selama 15 hari. Pengolahan data analisa program anfor menggunakan software Totis dan analisa program admiralty menggunakan software microsoft excel. Hasil analisa pasang surut program admiralty dan anfor perolehan selisih terbesar yaitu pada komponen S2 sebesar 9,3503 m dari analisa data observasi Cilacap tahun 2015. Sedangkan untuk selisih fase terbesar yaitu pada komponen K2 dari analisa data Cilacap 2014 sebesar 687,6405O . Uji hasil data prediksi masing-masing analisa dengan data pengamatan menunjukkan program lebih baik. Hal ini dapat dilihat dari nilai RMSE program anfor pada empat data lebih kecil dibandingkan program admiralty. Berdasarkan hasil uji dari kedua metode menghasilkan bahwa keuntungan dari program anfor yaitu lebih cepat dan mudah dalam analisa serta menghasilkan komponen pasut lebih banyak dan hasil prediksi yang lebih akurat. Kata kunci : pasang surut, anfor, laksamana, perbandingan
Sosialisasi Bijak Menggunakan Gadget untuk Edukasi Orang Tua dalam Mendampingi Anak Belajar Nova Tri Romadloni; Hasna Karima, Fatimah; Mariyanto, Mariyanto
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 4 No. 4 (2025): November 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdikan.v4i4.6520

Abstract

The use of gadgets has become an essential part of daily life, including in supporting children’s learning processes. Gadgets provide wide access to information, interactive educational applications, and opportunities to develop digital skills. However, excessive use without proper guidance can lead to negative impacts such as physical health problems, digital addiction, decreased concentration, and reduced social interaction. These challenges highlight the crucial role of parents as guides, supervisors, and role models in ensuring wise gadget use. This community service program aimed to educate parents, particularly PKK mothers in Dawung Village, on practical strategies for accompanying children in their use of gadgets. The activities were carried out through socialization sessions, interactive discussions, and quizzes. The discussion revealed major issues faced by parents, such as difficulty in limiting screen time, children’s preference for gaming over learning, and limited knowledge of educational applications. Meanwhile, the quiz results indicated that most participants achieved “good” (45%) and “very good” (37.5%) categories, with an average score of 72, showing improved understanding after the program. This program concludes that family digital literacy can be strengthened through interactive socialization that actively involves participants. With consistent parental guidance, gadgets can be directed to become a healthy, productive, and safe learning tool for children’s development.
Gravity Interpretation of Mud Volcano based on Satellite Data (Study Case Kuwu and Cangkring Mud Volcano) Indriana, Rina Dwi; Mariyanto, Mariyanto; Agustin, Eleonora; Iryanti, Mimin; Hapsoro, Cahyo Aji; Koesuma, Sorja; Ashadi, Abdul Latif
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 14, No 1 (2024): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v14i1.84933

Abstract

A mud volcano is one type of mountain in the world. Mud volcano has specific characteristics. In Java, several mud volcanoes spread from west to east of Java. Bledug Kuwu and Bledug Cangkring are mud volcanoes in Central Java. Research on the Bledug Kuwu and Cangkring mud volcanoes systems was not done. In this preliminary study, the gravitational field analysis of the Kuwu-Cangkring mud volcano system was done by using GGmPlus satellite data with a 220 m grid and elevation data using ERTM. Free air anomaly data processing obtained a complete Bouguer anomaly value of 23 to 34 mGal. The separation process of anomalies using the upward continuation method produces a local of -0.5 to 0.5 mGal and a regional of 23 mGal to 34 mGal. The local anomaly value of Bledug Kuwu was -0.275 to - 0.05 mGal and Bledug Cangkring-0.125 to 0.1 mGal. The local anomaly around Bledug Cangkring is higher than Bledug Kuwu, indicating a lower density beneath Bledug Kuwu than in Cangkring.