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All Journal Equals : Jurnal Ilmiah Pendidikan Matematika Engineering and Technology International Journal (EATIJ)
Aditia, Riski
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

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Analisis Kesulitan Linguistik dalam Pemahaman Istilah Matematika Berbahasa Inggris oleh Mahasiswa Teknik Informatika Buana, Andi Nuzul Hikmah; Waru, Misveria Villa; Aditia, Riski
EQUALS: Jurnal Ilmiah Pendidikan Matematika Vol. 8 No. 2 (2025): Inovasi Pembelajaran Matematika Berbasis Teknologi, Kognitif, dan Etnomatematik
Publisher : Program Studi Pendidikan Matematika, FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/equals.v8i2.2993

Abstract

This study explores the linguistic challenges experienced by Informatics Engineering students in understanding English mathematical terminology used in academic discourse. As English remains the dominant language in science and technology, the ability to comprehend subject-specific vocabulary is crucial for non-native learners. The research aims to describe the types of linguistic difficulties students encounter, identify contributing factors, and propose effective instructional strategies. Using a descriptive qualitative design supported by quantitative data, the study involved 60 students who had completed courses in basic mathematics, linear algebra, and algorithms. Data were obtained through mathematical vocabulary tests, questionnaires, semi-structured interviews, and document analysis. The results show that students face notable difficulties with polysemous and homonymous words, syntactic complexity in mathematical texts, and limited translation skills. Although students easily recognize technical terms such as derivative and matrix, they often misinterpret contextual words like root or function due to multiple meanings. The findings indicate that linguistic competence directly influences the comprehension of mathematical concepts. The novelty of this study lies in integrating linguistic and disciplinary perspectives through an ESP/EAP-based approach. It also recommends adaptive and technology-assisted pedagogy to strengthen students’ academic literacy and understanding of English mathematical terminology.
Analisis Emisi Gas Buang Kapal Berdasarkan Data Operasional pada Rute Pelayaran Tertentu: Evaluasi CO2, NOx, SOx, dan PM Berbasis Metode Faktor Emisi IMO dengan Penilaian Kepatuhan CII dan EEXI Aditia, Riski; Dewi, Deza Zalia Permata; Efendy, Moh. Hafidz
Engineering and Technology International Journal Vol 7 No 03 (2025): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v7i03.1281

Abstract

Emisi gas buang kapal merupakan kontributor signifikan terhadap perubahan iklim dan polusi udara pelabuhan, menjadikan monitoring dan evaluasinya kritis untuk kepatuhan regulasi IMO MARPOL Annex VI. Penelitian ini menyajikan analisis komprehensif emisi gas buang kapal feri penumpang 4.200 GT pada rute Jakarta–Sorong (1.520 nm) berdasarkan data log operasional 365 hari menggunakan metode faktor emisi IMO. Kebaruan penelitian mencakup: (1) kuantifikasi simultan empat polutan utama (CO2, NOx, SOx, PM) dengan analisis statistik deskriptif multi-parameter termasuk distribusi normalitas, analisis persentil, dan pola variasi musiman; (2) validasi faktor emisi terukur terhadap nilai default IMO untuk enam polutan; (3) proyeksi trajektori CII (Carbon Intensity Indicator) 2023–2030 untuk dua skenario (BAU dan optimal) terhadap batas wajib IMO; dan (4) analisis biaya efektivitas delapan langkah mitigasi emisi dalam kerangka SEEMP (Ship Energy Efficiency Management Plan). Hasil menunjukkan: emisi CO2 tahunan 2.920 ton, NOx 153,3 ton, SOx 16,4 ton, PM 7,3 ton. CII aktual 2023 = 0,0137 g CO2/GT-nm (rating C — mendekati batas wajib). Faktor emisi NOx terukur 6,1% lebih rendah dari default IMO (87 g/kWh), mengindikasikan kinerja mesin yang baik. Skenario slow steaming (−15% kecepatan) memberikan reduksi CO2 terbesar (12,4%) dengan biaya efektivitas USD 8/ton CO2 — terendah dari semua opsi yang dievaluasi.
Co-Authors Buana, Andi Nuzul Hikmah Dewi, Deza Zalia Permata Efendy, Moh. Hafidz Misveria Villa Waru