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All Journal Jurnal Ilmiah Profesi Pendidikan Impression : Jurnal Teknologi dan Informasi
Sukuryadi , Sukuryadi
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering

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Analisis Spasial Dampak Lingkungan Akibat ASGM Menggunakan Indeks NDVI dan Fe-Oxide dari Citra Landsat-9 di Kecamatan Lantung, Sumbawa, Indonesia Putra, Ari Nuryaddin; Syafaat, Joni; Sukuryadi , Sukuryadi
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 3 (2025): November 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i3.976

Abstract

Artisanal and Small-Scale Gold Mining (ASGM) di Kecamatan Lantung, Kabupaten Sumbawa, memberikan dampak signifikan terhadap lingkungan, khususnya terhadap kondisi vegetasi dan mineralisasi permukaan. Penelitian ini bertujuan untuk mendeteksi indikasi degradasi lingkungan akibat aktivitas ASGM menggunakan data penginderaan jauh dari satelit Landsat-9. Analisis dilakukan dengan memanfaatkan indeks vegetasi seperti NDVI (Normalized Difference Vegetation Index serta indeks oksida besi (Fe-Oxide) melalui rasio spektral band 4/2 dan 4/3. Hasil penggabungan spasial menunjukkan bahwa zona dengan nilai NDVI ≤ 0.1 dan rasio Fe-oxide tinggi terkonsentrasi pada lokasi pertambangan aktif. Temuan ini mengindikasikan tekanan lingkungan kuat terhadap vegetasi, yang dapat digunakan sebagai indikator awal untuk delineasi wilayah risiko. Total area yang teridentifikasi sebagai zona tekanan lingkungan mencapai ±65,33 hektar dari total area studi ±2.278 hektar. Metodologi ini terbukti efektif untuk pemetaan awal dampak ASGM, khususnya di wilayah minim data laboratorium.   Artisanal and Small-Scale Gold Mining (ASGM) activities in Lantung District, Sumbawa Regency, have significantly impacted the environment, particularly in terms of vegetation condition and surface mineralization. This study aims to detect early signs of environmental degradation caused by ASGM using remote sensing data from the Landsat-9 satellite. The analysis employed vegetation indices such as NDVI (Normalized Difference Vegetation Index) along with an iron oxide index derived from spectral band ratios (Band 4/2 and 4/3). Spatial penggabungan results revealed that zones with NDVI values ≤ 0.1 and high Fe-oxide ratios were concentrated around active mining areas. These findings indicate strong environmental pressure on vegetation, which can serve as an early indicator for delineating risk-prone areas. A total of approximately 65.33 hectares out of the 2,278-hectare study area was identified as environmentally stressed. This methodology proves effective for preliminary ASGM impact mapping, especially in data-scarce regions.  
Penggunaan The Socratic Method untuk Meningkatkan Critical Thinking Skill Siswa Kelas 7 SMP-IT Syaikhuna Zainuddin Atsani NW Lingkuk Dane Yuliani, Yuliani; Junaidin, Junaidin; Sukuryadi , Sukuryadi
Jurnal Ilmiah Profesi Pendidikan Vol. 10 No. 4b (2025): Edisi Khusus
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v10i4b.4247

Abstract

This study aims to analyze the effectiveness of the use of the Socratic Method in improving Critical Thinking Skills. The Socratic Method, which focuses on in-depth and collaborative dialogic interactions between teachers and students, motivates students to be active in exploring, testing beliefs, and critically analyzing information. Various studies have shown that the application of this method, especially in mathematics education at the junior and senior high school levels, can significantly improve students' Critical Thinking Skills compared to traditional teaching methods. Findings from the study at SMPN showed that more than 75% of students were actively and effectively involved in the learning process, with a consistent increase in critical thinking scores in the aspects of clarification, investigation of assumptions, reasons, evidence, and reflection. The Socratic Method has also proven successful in improving students' ability to make decisions based on independent analysis and logical arguments, making it very relevant to be implemented in today's educational context that requires the development of high-level thinking skills. Other studies have also shown that the Socratic Dialogue approach has a significant success rate in improving students' Critical Thinking Skills. Thus, this approach is highly recommended for adoption in the educational process.
Co-Authors Junaidin, Junaidin Putra, Ari Nuryaddin Syafaat, Joni Yuliani Yuliani