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All Journal Jurnal Geografi Asy-Syariah
Yasir, Moh
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Random Forests Algorithm for Two Levels of Coral Reef Ecosystem Mapping Using Planetscope Image in Malalayang Beach, Manado Cera, Fela Pritian; Danoedoro, Projo; Wicaksono, Pramaditya; Yasir, Moh
JURNAL GEOGRAFI Vol. 15 No. 2 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i2.30795

Abstract

The coral reef ecosystem has a significant physical and biological function and is also one of the coastal ecosystem components apart from the seagrass and mangrove ecosystem. Besides their ecological function, the coral reef also has an economic function. The condition of the coral reef ecosystem in Malalayang Beach has been changing for years. The utilization of remote sensing images can monitor current conditions. This research aims to map the coral reef ecosystem mapping in Malalayang Beach, Manado and conduct a test for the accuracy of coral reef ecosystem mapping using field survey data as a classification and validation sample. PlanetScope multispectral image has four channels to detect underwater objects: red, green, blue and near infrared. PlanetScope level 3B image for the research has a surface reflectance value for its pixel. The image processing stages of this research consist of sunglint correction, water column correction, and then continue to classify the coral reef ecosystem using random forests algorithm. Classification and accuracy training sample data were obtained using the photo transect technique. The sunglint correction regression equation is between 0.27 “ 0.38. The coefficient of attenuation ratio in B1 is 0.927797938, B2 is 0.168841585, and B3 is 0.29033029. This value then becomes the input for the Lyzenga formula. The classification accuracy for level one using random forests is 72,54%, and the accuracy for level two mapping is 37,61%.Keywords: Coral Reef Ecosystem, Planetscope, Random Forests
Tradisi ruwatan jawa ditinjau dari urf dan pendekatan sosiologi hukum islam Widodo, Joko; Yasir, Moh; Halim, Abdul
Asy-Syari’ah : Jurnal Hukum Islam Vol. 10 No. 2 (2024): Asy-Syari'ah: Jurnal Hukum Islam, Juni 2024
Publisher : LP3M Universitas Islam Zainul Hasan Genggong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55210/assyariah.v10i2.1544

Abstract

The Javanese ruwatan tradition is a tradition that has been going on for a long time in Indonesia, especially on the island of Java, which has been carried out from generation to generation and has been preserved by the practitioners of this tradition. This tradition has the aim of ensuring that humans are given safety, sustenance and blessings because they have removed the sengkala from the human limbs or body. This article needs to be studied in depth, so this writing aims for the reader to increase knowledge about the views of the Javanese ruwatan tradition in terms of Urf and the Sociology of Islamic Law approach. This research uses a qualitative research approach with a description method, namely research that examines and describes the Javanese ruwatan tradition from a urf perspective and an Islamic legal sociological approach, as the main data is from the literature. The results of the research show that the Javanese ruwatan tradition which does not conflict with Islamic law, can be included as urf Sahih or a tradition that is in harmony with Islamic law, and ruwatan in the form of a celebration held by reading verses from the holy Qur'an, such as Surah Yasin and reading several Sholawat of the Prophet SAW, with the intention of asking Allah SWT for safety and good luck, this is permitted.
Co-Authors A Halim Cera, Fela Pritian Djoko Widodo Pramaditya Wicaksono, Pramaditya Projo Danoedoro