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All Journal JGISE-Journal of Geospatial Information Science and Engineering Jurnal Pgmi Uniga
Aditya, Sandi
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Bathymetric Mapping of Shallow Water Using Aerial Images With Structure-From-Motion Approach: A Case Study Of Kepulauan Seribu Water, Dki Jakarta Sulistian, Teguh; Gularso, Herjuno; Arum, Dewi Sekar; Aditya, Sandi; Mugiarto, Fajar Triady
Jurnal Geospasial Indonesia Vol 7, No 2 (2024): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.102075

Abstract

Bathymetric mapping is crucial for marine spatial planning and coastal infrastructure development. However, shallow waters with depths ranging from 0 to 5 meters are considered critical areas that pose dangers to conventional survey vessels. This research examines a bathymetric mapping method for the shallow waters of Kepulauan Seribu, Jakarta, using aerial images captured by an unmanned aerial vehicle (UAV) with a structure-from-motion (SfM) approach. Furthermore, the point cloud must be corrected for the refractive index since light passes through both air and water. The seawater refractive index is derived from salinity and seawater temperature data. The validation process uses several independent control points (ICPs) obtained from GNSS real-time kinematic (RTK) measurements and soundings conducted with an unmanned surface vessel (USV). The accuracy assessment shows that the SfM point cloud data has a horizontal RMSE of 0.103 m and a vertical RMSE of 0.191 m. The aerial image approach significantly speeds up the acquisition process compared to conventional sounding methods and produces a higher density of point clouds, integrating the coastal digital elevation model (DEM) of both land and sea areas. However, the use of this method is limited to clear waters where the seabed is visible in the images.
Peran Permainan Boy-boyan dalam Menurunkan Tingkat Kecanduan Game Online Pada Anak Usia Sekolah Dasar Aditya, Sandi; Siti Anisah, M.Pd, Dr. Ani
Jurnal PGMI UNIGA Vol 2 No 1 (2023): Jurnal PGMI UNIGA
Publisher : Universitas Garut

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Abstract

Penelitian ini dilatarbelakangi dengan adanya permasalahan pada anak usia sekolah dasar yang sudah kecanduan game online. Hal tersebut membuat orang tua khawatir terhadap anaknya karena game online kebanyakan menimbulkan dampak  negatif. Salah satunya menimbulkan adiksi atau kecanduan yang kuat, karena sebagian besar game online yang beredar saat ini memang di desain supaya menimbulkan kecanduan para pemainnya. Berkaitan dampak tersebut, orang tua mengkhawatirkan akan terganggunya pada pendidikan anak yang dijalaninya.Penelitian ini bertujuan untuk memberikan sebuah gambaran tentang penerapan permainan tradisional khususnya permainan boy-boyan dapat menurunkan tingkat kecanduan game online. Subjek penelitian ini adalah anak usia sekolah dasar di lingkungan kampung Margaluyu desa Giriawas kecamatan Cikajang. Secara umum penelitian ini dilakukan dengan metode penelitian kualitatif deskriftip, menggunakan instrument berupa wawancara, observasi dan dokumentasi. Analisis data di lakukan menggunakan teknik analisis.
Co-Authors Arum, Dewi Sekar Herjuno Gularso Mugiarto, Fajar Triady Siti Anisah, M.Pd, Dr. Ani Sulistian, Teguh