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All Journal Literasi Bahasa dan Sastra Jurnal Elimensi Journal of Electrical Engineering
Sihombing, Anju
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Arts Humanities Automotive Engineering Computer Science & IT Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mechanical Engineering

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High-Resolution SAR Image Reconstruction Using Deep Unfolding for Disaster Monitoring Sihombing, Anju
Journal of Electrical Engineering Vol. 2 No. 03 (2024): Elimensi : Journal of Electrical Engineering
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/elimensi.v2i03.429

Abstract

This study proposes a deep unfolding approach for high-resolution SAR (Synthetic Aperture Radar) image reconstruction, aiming to improve image quality in disaster monitoring applications. SAR images often suffer from deterioration and resolution degradation due to atmospheric conditions and signal interference, which can reduce the accuracy of disaster analysis. The proposed deep unfolding technique combines the advantages of conventional optimization methods with the capabilities of deep learning to learn better and more accurate image representations. The approach consists of iterative unfolding that adapts data-driven learning with an optimization model to address noise, distortion, and resolution deficiencies in SAR images. The developed deep unfolding model is trained using SAR data from various disaster events, such as floods, earthquakes, and tsunamis, to learn distinctive patterns and structures in SAR images. Experimental results show that this approach successfully improves image quality with significant noise reduction and up to 30% resolution increase compared to conventional reconstruction techniques. Evaluation using the Peak Signal-to-Noise Ratio (PSNR) and Structural Similarity Index (SSIM) metrics demonstrated substantial improvements in the quality of recovered imagery, enabling more effective and accurate disaster monitoring. With the ability to recover lost details in SAR imagery, this deep unfolding approach opens up opportunities for broader applications in satellite imagery-based disaster monitoring and emergency response.
Makna Simbolik Lompat Batu Nias dalam Perspektif Sastra dan Budaya: Kajian Semiotik Roland Barthes Sihombing, Anju; Sobirin, Muhammad; Herman, Hidayat
Literasi Bahasa dan Sastra Jurnal Vol. 2 No. 2 (2025): LIBAS Vol. 2 No.2 September 2025
Publisher : Yayasan Tri Edukasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63462/yw5zwb61

Abstract

This article examined the symbolic meaning of the Nias Stone Jump (Fahombo Batu) within the framework of literary and cultural studies, using Roland Barthes’ semiotic theory (1964) as the main analytical approach. The research problem arises from the phenomenon that the traditional practice of jumping over stone walls in Nias, originally rooted in rituals of maturity, bravery, and social identity, has undergone a shift in meaning due to modernization and tourism commercialization. The study seeks to uncover how these transformations affect the symbolic and narrative layers of the tradition when interpreted as a cultural text. Employing a qualitative descriptive method through semiotic analysis, the research identifies and interprets the denotative, connotative, and mythic levels of meaning embedded in the tradition. Primary data were obtained from field documentation, interviews, and literary sources depicting the cultural practice, while secondary data were gathered from previous studies on Nias cultural symbols. The analysis revealed that the stone jump, at the denotative level, signifies physical prowess and initiation into adulthood; at the connotative level, it represents courage, social recognition, and masculine pride; and at the mythic level, it embodies the collective identity and resilience of the Nias people amid cultural transformation. The study concludes that, through Barthes’ semiotic lens, Fahombo Batu functions as a living text where traditional values continuously interact with modern interpretations, reflecting the dynamic relationship between heritage, meaning, and contemporary cultural expression.
Co-Authors Herman, Hidayat Muhammad Sobirin