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All Journal Jurnal Biologi Tropis Jurnal Ilmiah Matematika (JIMAT)
Putra, Aldi Maulana
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Mathematics

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Correlation Between Noise Levels and Noise-Induced Hearing Loss in Ground Handling Officers at Kualanamu Airport Putra, Aldi Maulana; Herwanto, Yusa; Lubis, Yuliani M.; Ashar, Taufik
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.8867

Abstract

Airport ground handling officers are highly exposed to noise from aircraft operations, potentially leading to Noise-Induced Hearing Loss (NIHL). This study aims to investigate the correlation between noise levels and NIHL among ground handling officers at Kualanamu Airport. A cross-sectional observational design was applied. Data on noise levels were obtained using a sound level meter, and NIHL was assessed with a calibrated Interacoustics audiometer AD528. Among 23 officers exposed to 95 dB, 16 (69.6%) had NIHL, and among 5 officers exposed to 100 dB, 4 (80%) had NIHL. Statistical analysis using the Kruskal-Wallis test confirmed a significant relationship between noise levels and NIHL (p<0.001). The study highlights the need for preventive strategies in noisy airport environments. The conclusion is that there is a significant correlation between occupational noise exposure and the incidence of Noise Induced Hearing Loss (NIHL) among ground handling officers at Kualanamu International Airport.
Kemampuan Berpikir Logis Siswa Dalam Menyelesaikan Masalah Peluang Ditinjau dari Self-Regulated Learning Jatmiko, Dhanar Dwi Hary; Putra, Aldi Maulana; Kristiana, Arika Indah; Murtikusuma, Randi Pratama; Adawiyah, Robiatul
JIMAT: Jurnal Ilmiah Matematika Vol 6 No 1 (2025): Januari- Juni 2025
Publisher : Program Studi Pendidikan Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63976/jimat.v6i1.921

Abstract

Penelitian ini dilakukan dengan tujuan untuk mendeskripsikan kemampuan berpikir logis siswa dalam memecahkan masalah peluang ditinjau dari self-regulated learning. Populasi yang digunakan dalam penelitian ini adalah siswa SMP kelas IX. Sampel penelitian kualitatif yang diambil sebanyak 3 siswa yang memiliki self-regulated learning yang berbeda, yaitu siswa dengan self-regulated learning tinggi, siswa dengan self-regulated learning sedang dan siswa dengan self-regulated learning rendah. Materi yang digunakan dalam penelitian ini adalah materi peluang. Hasil dari penelitian ini menunjukkan bahwa siswa dengan self-regulated learning tinggi memenuhi 3 tahapan dengan 4 indikator berpikir logis. Siswa dengan self-regulated learning sedang memenuhi 3 tahap dengan 4 indikator meskipun pada tahap kemampuan argumentasi masih belum lengkap. Siswa dengan self-regulated learning rendah memenuhi tahapan berpikir runtut namun tidak memenuhi tahapan kemampuan berargumentasi dan menarik kesimpulan.
Co-Authors Arika Indah Kristiana Herwanto, Yusa Jatmiko, Dhanar Dwi Hary Lubis, Yuliani M. Randi Pratama Murtikusuma Robiatul Adawiyah Taufik Ashar