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All Journal Jurnal Ilmiah Pendidikan Fisika JTERA (Jurnal Teknologi Rekayasa)
Ramdhania, Lathifa Nur
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics

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Metode Anotasi Visual Baru untuk Meningkatkan Akurasi Sistem Penentuan Posisi dalam Ruangan Berbasis Kamera Ramdhania, Lathifa Nur; Almadaniy, Hanif; Aminudin, Ahmad; Hasanah, Lilik
JTERA (Jurnal Teknologi Rekayasa) Vol 10, No 1: Juni 2025
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v10.i1.2025.105-112

Abstract

Sistem penentuan posisi dalam ruangan (Indoor Positioning System/IPS) memiliki peranan penting dalam berbagai aplikasi seperti navigasi robot, pelacakan aset, dan sistem layanan otomatis. Salah satu pendekatan IPS yang menjanjikan adalah berbasis kamera menggunakan algoritma YOLOv4 karena biayanya yang relatif rendah dan fleksibilitas penggunaannya, namun akurasinya masih tergolong rendah. Studi ini meningkatkan akurasi sistem IPS berbasis kamera melalui pendekatan anotasi visual baru, yaitu dengan menempatkan anotasi pada titik tengah antara dua kaki manusia sebagai acuan posisi objek di lantai. Dataset khusus berisi 2.000 citra digunakan untuk melatih model YOLOv4 yang telah disesuaikan. Hasil evaluasi menunjukkan peningkatan performa dengan nilai mean average precision (mAP) sebesar 99,19% setelah pelatihan sebanyak 6.000 iterasi. Rasio konversi pixel-ke-centimeter yang diperoleh mencapai 0,309 cm/pixel (sumbu-x) dan 0,308 cm/pixel (sumbu-y), dengan peningkatan akurasi sebesar 62,43% dan penurunan standar deviasi sebesar 69,01%. Temuan ini menunjukkan bahwa metode kalibrasi menggunakan anotasi pada kaki secara signifikan meningkatkan akurasi estimasi posisi dalam ruangan.
The Application of the Dimensional Analysis Approach in Understanding the Interrelationships Between Physical Quantities for Students Lega Serano, Havez Rasya; Suhendi, Endi; Ramdhania, Lathifa Nur; Sari, Lasmita; Amiruddin, Mohd Zaidi Bin; Sya’roni, Imam
Jurnal Ilmiah Pendidikan Fisika Vol 10, No 1 (2026): MARCH 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v10i1.17146

Abstract

The main issue raised in this study is the tendency of students to rely on memorizing physics formulas without understanding the relationships between quantities and their dimensions. This study aims to explore the use of the dimensional analysis approach as a tool for understanding and deriving the relationships between physical quantities in various types of motion, including oscillatory motion, free fall motion, and parabolic motion. Exploratory and conceptual analysis methods were used in this study with a descriptive approach. In addition, an attitude scale instrument was used to measure students’ perceptions, which has been shown to be valid (0.80–0.92) and reliable (α = 0.89). The results show that the equations obtained through dimensional analysis are consistent with theoretical equations. This confirms that the approach is capable of correctly identifying the form of physical relationships, although it cannot yet determine the numerical constants precisely. In addition, student responses show a positive attitude towards the dimensional analysis approach, which is considered a new, useful, and efficient way of solving physics problems. However, students also recognized the limitations of this method in producing exact solutions due to the existence of arbitrary constants. These findings indicate that dimensional analysis is a scientifically robust and pedagogically valuable approach that can strengthen conceptual understanding. Thus, the application of the dimensional analysis approach in physics learning can help students find solutions logically and systematically.
Co-Authors Ahmad Aminudin Almadaniy, Hanif Amiruddin, Mohd Zaidi Bin E. Suhendi Lega Serano, Havez Rasya Lilik Hasanah sari, Lasmita Sya’roni, Imam