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Alfian Qomaruddin
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INDONESIA
REKAYASA
Published by Universitas Trunojoyo Madura
ISSN : 02169495     EISSN : 25025325     DOI : https://doi.org/10.21107/rekayasa
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Engineering Physics
This journal encompasses original research articles, review articles, and short communications, including: Science and Technology, In the the next year publication, Rekayasa will publish in two times issues: April and Oktober.
Arjuna Subject : -
Articles 504 Documents
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Evaluasi Kesehatan Ekosistem Mangrove Menggunakan Indeks MHI (Mangrove Health Indeks) serta Identifikasi Spesies Dominan di Pesisir Tuban dan Lamongan Prayogo, Luhur Moekti; Sudianto, Achmad
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.30475

Abstract

Mangrove ecosystems play a vital role in protecting coastlines, sequestering carbon, and sustaining coastal biodiversity. However, various pressures such as land conversion, abrasion, and human activities are causing degradation in these ecosystems. This study aims to assess the health condition of mangroves in Tuban and Lamongan Regencies through an integrative approach based on Mangrove Health Index (MHI), Normalized Difference Vegetation Index (NDVI) from Sentinel-2A images, and field data. The results of the study showed that the total area of mangroves in the two regions reached 178.88 hectares, with the dominance of medium density (56.47%) and high density (80.37%) which described relatively healthy vegetation conditions. Lamongan Regency recorded higher species diversity (10 types) than Tuban (7 types). The species found include Rhizophora mucronata, R. apiculata, R. stylosa, Avicennia marina, A. officinalis, A. alba, Bruguiera gymnorrhiza, Ceriops tagal, Aegiceras corniculatum, and Sonneratia alba. NDVI analysis showed a positive correlation with MHI, with the eastern Lamongan area and central Tuban as healthy mangrove zones. These findings reinforce the relevance of the use of remote sensing data in coastal ecosystem mapping, but still require field validation for ecological accuracy. This study recommends the integration of spatial approaches with community-based rehabilitation policies to strengthen the sustainability of mangrove management.
Optimisasi Rute Penyelamatan Robot Mobil dalam Labirin: Algoritma Pencarian Jalur Terpendek Wahyuni, Sri; Fuad, Muhammad; Umam, Khanif Khoirul; Sya’diyah, Lailatus; Laksono, Deni Tri
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.23810

Abstract

An area where a fire occurs is generally covered in smoke, hot air and dangerous for firefighters to enter. Robotics technology, especially mobile robots, makes it possible to be used as a rescuer to replace the role of the firefighter team. The task of the rescue mobile robot is to thoroughly explore the area and then on the next iteration, the mobile robot is able to find the shortest path by eliminating paths that lead to dead ends. The robot's ability to map and choose the shortest path is the goal of this research. The path is a black line intersecting at a 90° angle. The method applied to achieve the objectives in this research is the maze mapping algorithm left hand rule. The maze solving algorithm left hand rule method was chosen as a solution to plan the shortest path in a maze-shaped environment by creating codes such as L (Left), S (Straigh) and U (Dead End). After the codes were compiled from the mapping process, the code was simplified so that the robot could find a way out of the maze with the shortest path. The success rate was 90%, out of ten tests using the maze mapping left hand rule method, resulting in nine successes and one failure. The fastest mapping time was 23 seconds and the average was 62 seconds, while the shortest time was 8 seconds and the average was 27 seconds.
Digital Modern Financial Systems In The Perspective of Cyber Risk Management : A Structural Equation Modelling Approach Lisnawaty, Lisnawaty; Mujanah, Siti; Fianto, Achmad Yanu Alif
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.31765

Abstract

The rapid digitalization of financial systems has amplified exposure to cyber risks, posing substantial threats to institutional performance and systemic stability. This study investigates how Cyber Risk Management (CRM) strengthens Financial System Resilience (FSR), both directly and indirectly, through Regulatory Compliance (RC) and Technological Safeguards (TS). Using Structural Equation Modelling (SEM) with simulated survey data (n = 200), the findings reveal that CRM has a strong direct effect on FSR (β = 0.41, p 0.001) and significant indirect effects via RC (β = 0.07, 95% CI [0.02–0.12]) and TS (β = 0.14, 95% CI [0.08–0.20]). The overall model demonstrates robust explanatory power (R² = 0.65), confirming that 65% of financial system resilience is explained by CRM, RC, and TS. These results validate a multi-layered framework in which governance, compliance, and technology jointly enhance systemic resilience. The study contributes theoretically by integrating cyber risk management with resilience theory, and practically by offering a model for policymakers and financial institutions to design more adaptive, secure, and technology-driven financial ecosystems in the digital era. 
Studi Komparasi Parameter Lingkungan Proses Produksi Garam di Indonesia Fauziyah, Lailatul; Yulitasari, Fara’idhya Intan; Maulana, Ilham; Camila, Aysyah Fitria; Efendy, Makhfud; Nuzula, Nike Ika; Pratiwi, Wiwit Sri Werdi
Rekayasa Vol 18, No 3: Desember, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i3.28434

Abstract

Indonesia has great potential as a salt-producing country due to its extensive coastline and favorable geographical conditions. However, the quality and quantity of domestic salt production are still suboptimal and fail to meet the domestic industrial salt demand. This study aims to analyze and compare environmental parameters that influence the suitability of salt pond sites in several regions of Indonesia, as well as to understand the salt production process based on the deposition of impurities at various stages of crystallization. The study was conducted at eight locations with different climatological and hydrological characteristics, including rainfall, soil permeability and type, duration of sunlight, air humidity, wind speed, air temperature, evaporation rate, and water saturation. The results of the study indicate that environmental parameters play a role in determining the effectiveness and efficiency of the salt production process. Pati and Aceh Besar districts are classified as unsuitable (N) for soil parameters, thus requiring adaptive technologies such as geomembranes and boiling methods. The salt crystallization process begins with the flow of seawater from the bozem to the crystallization table, where impurities such as mud, sand, Fe₂O₃, CaCO₃, CaSO₄•2H₂O, and gypsum are gradually deposited. Meanwhile, NaCl deposits form on the crystallization table, and MgSO₄ and NaBr compounds are found in the bittern pond. This study emphasizes the importance of land suitability mapping based on environmental parameters to enhance national salt productivity and quality, as well as serving as a foundation for developing more adaptive salt production policies tailored to regional conditions.

Page 51 of 51 | Total Record : 504

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