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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Geosaintek Jurnal Teknik Jurnal Kridatama Sains dan Teknologi
Niswah Selmi Kaffa
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Journal : Jurnal Teknik

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Perbandingan Nilai Kedalaman Relatif Sungai Brantas Kabupaten Jombang dengan Perhitungan Algoritma Van Hengel and Spitzer Citra Sentinel-2 dan Digital Elevation Model (DEM) Niswah Selmi Kaffa; Muchammad Masykur; Yoga Kencana Nugraha
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 21 No 2 (2022): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol21no2.475

Abstract

Shallow water relative depth can be gained from the Digital Elevation Model (DEM). As science develops, methods are developed to gain the relative depth one is by processing the Sentinel-2 image using Van Hengel and Spitzer algorithm. The authors aim to compare the relative depth gained from the Sentinel-2 image using the Van Hengel and Spitzer algorithm to the relative depth gained from DEM. The data needed are orthorectified Sentinel-2 level 1C images downloaded from the Earth Explorer page and DEM downloaded from the Tanah Air page. Sentinel-2 image is then corrected atmospherically and radiometrically to get its radian value then processed using the Van Hengel and Spitzer algorithm. The sample points are spread at 25 meters intervals along the Jombang regency Brantas River. This study only compares the computational calculation therefore no field validation is carried out. Sentinel-2 Van Hengel and Spitzer provides an average relative depth of 16.35 m and DEM provides an average relative depth of 17.98 m with the determination coefficient (correlation value) of the two data is 6.52%. The low correlation is due to the high sediment content in the water column of Brantas River, causing the bias in the image.
The Analysis of GCP Correction Toward GNSS-PPK for LandRegistration Base-map in Muktisari Village, Cipaku District, Ciamis Regency Niswah Selmi Kaffa; Regita Faridatunisa Wijayanti; Taufik Kusetiyohadi; Hesekiel Sijabat; Tedy Pranadiarso; Hilma Wasilah Robbani; Gholiqul Amrodh Alawy
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 23 No 2 (2024): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol23no2.571

Abstract

The Comprehensive Systematic Land Registration Program (PTSL) main requirement is land registration map in a scale of 1:1000 and horizontal accuracy (CE90) class 1 of 0,3 meters. Global Navigation Satellite System–Post Processing Kinematic (GNSS-PPK) provides good accuracy without Ground Control Point (GCP) correction, thus reducing cost and data acquisition time. GNSS-PPK without GCP correction is considered accurate in areas <500 meters elevation. This research aims to determine the GCP correction importance for photo accuracy in PPK process. This study analyzes aerial photo accuracy with and without GCP correction in areas with elevations from 200 to 430 meters. The data required are aerial photos, coordinates in RINEX files, Digital Terrain Model (DTM), and 8 GCP points. Coordinate files are calculated using the PPK method then used for photo correction. Photos are processed with and without GCP correction. Photo without GCP correction has a significant deviation than photo with GCP correction and does not meet the CE90 requirements. The accuracy has a negative correlation with an elevation of -0,041 without GCP and -0,76 with GCP. This study proves that GNSS-PPK method still requires GCP and it is not proven deviation in data without the GCP correction is directly proportional to elevation.
Pengaruh Mobilitas Masyarakat terhadap Tingkat Penambahan Jumlah Kasus COVID-19 di Surabaya Alawy, Gholiqul Amrodh; Achmad Wicaksono; Syaripin; Adelia Nur Isna Kartikasari; Niswah Selmi Kaffa
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 24 No 1 (2025): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol24no1.684

Abstract

Penelitian ini bertujuan untuk mengkaji dampak mobilitas penduduk dan kendaraan terhadap jumlah kasus COVID-19 di Surabaya serta menentukan jeda waktu (time lag) optimal antara pola mobilitas dan peningkatan kasus baru. Analisis regresi linier digunakan dengan variabel dependen (Yi) berupa jumlah harian kasus positif COVID-19 dan variabel independen (Xi) berupa data mobilitas. Data mobilitas ini dikumpulkan dari titik-titik transportasi utama di Surabaya, yaitu Stasiun Kereta Api Gubeng, Terminal Bus Purabaya, dan Gerbang Tol Waru Utama. Hasil penelitian menunjukkan bahwa terdapat pola peningkatan jumlah kasus COVID-19 yang sejalan dengan perubahan tingkat mobilitas masyarakat. Pada jeda waktu (lag) 0 hari, korelasi antara mobilitas dan kasus COVID-19 memiliki nilai koefisien determinasi (R²) sebesar 0,719, namun meningkat menjadi 0,753 ketika menggunakan jeda waktu 15 hari (lag = 15). Hal ini menunjukkan bahwa fluktuasi mobilitas masyarakat di Surabaya memiliki pengaruh yang lebih kuat terhadap jumlah kasus COVID-19 dalam rentang waktu 15 hari setelahnya. Model regresi linier yang dibangun melalui proses seleksi stepwise memperlihatkan bahwa tingkat mobilitas di Gerbang Tol Waru Utama menjadi variabel prediktor paling signifikan, menjadikannya faktor penting dalam memahami dinamika penyebaran COVID-19 di wilayah ini.
Co-Authors Achmad Wicaksono Adelia Nur Isna Kartikasari Angga Pratama Putra Ardiansyah, Ahmad Farid Bangun Muljo Sukojo, Bangun Muljo Gholiqul Amrodh Alawy Gholiqul Amrodh Alawy Hesekiel Sijabat Hesekiel Sijabat Hilma Wasilah Robbani Kartikasari, Adelia Nur Isna Muchammad Masykur Regita Faridatunisa Wijayanti Regita Faridatunisa Wijayanti Septa Erik Prabawa Syaripin Taufik Kusetiyohadi Taufik Kusetiyohadi Tedy Pranadiarso Vanadani Pranantya Yoga Kencana Nugraha Yunus Susilo