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All Journal Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan DIMENSI: Journal of Architecture and Built Environment
Hassan Gbran
Universitas Diponegoro
Arts Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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From Physical Models to Innovations: Technology Advances in Architectural and Civil Engineering Hassan Gbran
Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Vol 22, No 1 (2024): Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan
Publisher : Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/arst.v22i1.81909

Abstract

This study delves into the profound impact of physical prototypes on engineering design. It explores their historical and ongoing relevance in advancing architectural and civil engineering. The author emphasizes the critical role of measurement prototypes in pioneering engineering endeavors, highlighting their importance in validating innovative designs and ensuring operational integrity and safety. Through illustrative examples from structural engineering and architectural acoustics, the study underscores the enduring significance of physical models in engineering innovation. It provides valuable insights into the symbiotic relationship between physical prototypes and engineering theory, shedding light on their multifaceted role in propelling engineering advancements. Ultimately, the analysis offers a nuanced understanding of the integral contribution of physical prototypes to the advancement of the engineering discipline
2D Radiometric Mapping of Chromatic Decay in Heritage Façades via Photogrammetric Atlases Hassan Gbran; Siti Rukayah; Atik Suprapti; Edward E. Pandelaki
DIMENSI (Journal of Architecture and Built Environment) Vol. 52 No. 2 (2025): DECEMBER 2025
Publisher : Institute of Research and Community Outreach, Petra Christian University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/dimensi.52.2.129-144

Abstract

Diagnosing early chromatic decay on tropical heritage façades is challenging because subtle discoloration is often masked by variable illumination and heterogeneous material properties. This study addresses that gap with two objectives: (1) to develop a radiometry-aware hybrid framework for chromatic decay detection, and (2) to validate its robustness across four heritage façades in Semarang, Indonesia. The methodology integrates 2D radiometrically normalized photogrammetric texture atlases, multi-space color and texture descriptors (HSV, CIELAB, GLCM, LBP), hierarchical spectral clustering, and Random Forest refinement with expert annotations. On 2,480 annotated tiles, the hybrid approach achieved aggregate micro-F1 ≈ 0.86 (per-site 0.84–0.87), surpassing cluster-only baselines (0.80) and RF-only models (0.82). Calibration with isotonic regression yielded Brier scores of 0.11–0.13 and Expected Calibration Error (ECE) ≈ 0.05–0.07. Statistical robustness was supported by site-stratified bootstrap and Wilcoxon tests. The resulting calibrated decay maps enable prioritized inspections, evidence-based conservation, and monitoring of tropical heritage assets.
Co-Authors atik suprapti Edward E. Pandelaki R Siti Rukayah