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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Genbinesia Journal of Biology
Putri, Rani Rachma Astining
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Health Professions Immunology & microbiology

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Traditional ceremonies Mahesa Lawung as a traditional ritual of the Surakarta Palace in the Krendowahono Area, Central Java, Indonesia Syamsi, Rahma Nur; Safitri, Olinda Ayu; Putri, Rani Rachma Astining; Manullang, Raymond Hamonangan; Rinoa Salsabila Izdihar; Setyawan, Ahmad Dwi
Genbinesia Journal of Biology Vol. 3 No. 2 (2024): March 2024
Publisher : Generasi Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55655/genbinesia.v3i2.53

Abstract

Traditional ceremonies are a form of culture passed down from generation to generation, reflecting a society's values, beliefs, and identity. This research aims to find out and understand the meaning of the Mahesa Lawung traditional ceremony, the types of plants and animals used, and the knowledge of local communities in the Krendowahono Karanganyar Site area, Central Java. The method used in this research is a qualitative observation method, including direct interviews with each respondent. Data was collected through interviews and direct observation at the research location. The research data collected includes regional names, common names, scientific names of plants and animals species as well as parts used for offerings at Mahesa Lawung traditional ceremony, and the philosophies of the species that used in this traditional ceremony. There are 7 plants and 4 animal species used for the Mahesa Lawung traditional ceremony. The research results show that the Mahesa Lawung traditional ceremony is still carried out today, especially at the Krendowahono Site. Of the three villages used as research locations, almost all people knew about the ceremony but only heard about it and saw it briefly. The Mahesa Lawung traditional ceremony is a cultural history that needs to be preserved and maintained over time.
Comparing K-Means and K-Medoids for Industrial Air Pollution Analysis in Central Java Putri, Rani Rachma Astining; Fajri, Roifah; Suhardono, Sapta; Candraningtyas, Callista Fabiola; Septiariva, Iva Yenis
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 3 (2025): November 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i3.852-864

Abstract

Air is a fundamental necessity for all living beings, especially humans. However, human activities whether intentional or unintentional can degrade air quality through pollution. This study compares the performance of the K-Means and K-Medoids clustering algorithms in analyzing the air pollution load from the industrial sector in Central Java in 2021. Using a quantitative approach and R Studio software, the analysis focuses on SO₂ and NO₂ pollution data obtained from the official Central Java BPS website. The results indicate that the K-Medoids algorithm with the silhouette method yields the most optimal clustering performance, with the lowest Davies-Bouldin Index (DBI) value of 0.6201437 and 10 distinct clusters. Notably, Cluster 1 comprises districts with the highest industrial air pollution burden such as Banjarnegara Regency, which recorded 14,472 industries and NO₂ and SO₂ concentrations of 20 μg/m³ and 6 μg/m³, respectively. These findings demonstrate that clustering algorithms not only help reveal spatial pollution patterns but also provide critical insights for prioritizing targeted mitigation efforts and informing environmental policy-making in industrially active regions.
Co-Authors Ahmad Dwi Setyawan Candraningtyas, Callista Fabiola Fajri, Roifah Manullang, Raymond Hamonangan Rinoa Salsabila Izdihar Safitri, Olinda Ayu Septiariva, Iva Yenis Suhardono, Sapta Syamsi, Rahma Nur