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All Journal EIGEN MATHEMATICS JOURNAL Semeton Mathematics Journal
Nuzla Af'idatur Robbaniyyah
Department of Mathematics, University of Mataram
Mathematics

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Utilization of Landsat 8 Imagery for Analyzing Land Surface Temperature in Sumbawa Regency from 2018 to 2022 Using Google Earth Engine Meilinda Fauzi; Wiwit Febrianti; Elsa Amini; Nuzla Af'idatur Robbaniyyah
Semeton Mathematics Journal Vol 3 No 1 (2026): April
Publisher : Program Studi Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/semeton.v3i1.370

Abstract

This study aims to analyze the land surface temperature in Sumbawa Regency from 2018 to 2022 using Landsat 8 imagery and the Google Earth Engine (GEE) platform. The surface temperature data was obtained from the Landsat 8 image collection with a spatial resolution of 1 km and a temporal resolution of 8 days. The Split Window Algorithm was used to calculate the land surface temperature based on thermal infrared data. The analysis process included image acquisition, selection of daytime temperature bands, and conversion of temperature from Kelvin to Celsius. The results showed variations in the average land surface temperature in Sumbawa Regency over the five-year period, with a decreasing temperature trend in certain years, possibly related to climatic factors and the increase in green open spaces. These data can be used to support natural resource management and mitigate the impacts of climate change in the region. This study also emphasizes the importance of utilizing remote sensing technology and cloud computing platforms for efficient and integrated geospatial analysis.
Mathematical Model of Differential Equations to Population Growth Models with Limited Growth in West Nusa Tenggara Province Nuzla Af'idatur Robbaniyyah; Mutia Dewi Anjani; Ni Wayan Eka Lansuna; Ivan Luthfi Ihwani
Eigen Mathematics Journal Vol 7 No 2 (2024): December
Publisher : University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/emj.v7i2.223

Abstract

Differential equations are often a topic in the field of mathematics which has many applications in mathematical modeling, one of which is population growth. Research on population growth is of course important for an area because the results  of this research can be used in issuing policies such as maintaining the availability of agricultural land, places to live, and many others. In this study, the mathematical model of differential equations was used to find a population growth model for the West Nusa Tenggara Province, then the model was verified and calculations were carried    out using the Mathematica software. Then a model is generated with the equation (𝑡) = 3504006 𝑒0,012(𝑡−1993) which results in a calculation that the population of NTB will continue to grow so that it is necessary to verify the model which produces a logistics growth model.
Co-Authors Elsa Amini Ivan Luthfi Ihwani Meilinda Fauzi Mutia Dewi Anjani Ni Wayan Eka Lansuna Wiwit Febrianti