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Journal : Spektra: Jurnal Fisika dan Aplikasinya

IMPACT PROFILE OF ENSO AND DIPOLE MODE ON RAINFALL AS ANTICIPATION OF HYDROMETEOROLOGICAL DISASTERS IN THE PROVINCE OF SOUTH SUMATRA Melly Ariska; Hamdi Akhsan; Muhammad Muslim
Spektra: Jurnal Fisika dan Aplikasinya Vol 7 No 3 (2022): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 7 Issue 3, December 2022
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.073.02

Abstract

El Niño Southern Oscillation (ENSO) is a weather phenomenon in the Pacific Ocean. At the same time, Dipole Mode (DM) is an ocean-atmosphere interaction phenomenon in the Indian Ocean. The area of South Sumatra Province, which is in the Monsunal area, makes the influence of ENSO and DM very instrumental in determining the length of the rainy season and throughout the year. The South Sumatra region is very vulnerable to forest and land fire disasters due to the condition of the area in the form of swamps and peatlands, which are very easy to burn if the dry season occurs in the South Sumatra area. In this study, an analysis of the effect of ENSO and DM on rainfall in the South Sumatra Region from 1981 to 2020 was carried out using a simple linear regression method and the correlation coefficient using Niño 3.4 index data and Dipole Mode with rainfall data and consecutive rainy days data. Consecutive Wet Day (CWD). The purpose of this study was to determine the effect of Enso and Dipole Mode on rainfall and CWD in the South Sumatra Region. The results show that the correlation between ENSO and rainfall is 0.0017-0.002573, DM and rainfall is 0.05972, and ENSO and CWD is -0.068. The correlation between DMI and CWD is 0.513. So it can be said that ENSO and DMI have no effect on rainfall in the South Sumatra Province. Still, the amount of CWD in South Sumatra Province is significantly determined by the Dipole Mode Index (DMI) at a moderate level. The number of consecutive rainy days in South Sumatra Province is influenced by the dynamics of the ocean and atmosphere of the Indian Ocean, which is characterized by the presence of positive IOD and negative IOD phenomena.
Advancing X-Ray Medical Imaging through Compton Scattering Technologies: A Systematic Review of Technological Developments and AI-Based Image Reconstruction Ramadhani, Neysya Ditha; Murnia; Dwicahyani, Rania; Akhsan, Hamdi; Ariska, Melly
Spektra: Jurnal Fisika dan Aplikasinya Vol. 10 No. 2 (2025): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 10 Issue 2, August 2025
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.102.05

Abstract

Compton scattering has emerged as a promising advancement in X-ray medical imaging, offering enhanced spatial resolution and diagnostic precision compared to conventional techniques. This study employs a Systematic Literature Review (SLR) to evaluate the contributions of Compton scattering technologies in improving imaging performance. Forty peer-reviewed articles were selected from six major databases including Google Scholar, Scopus, PubMed, Web of Science, ScienceDirect, and arXiv based on predefined inclusion criteria. The review identifies three main technological approaches which are Compton cameras, inverse Compton X-ray sources, and Compton scattering tomography. Recent innovations in image reconstruction, particularly using deep learning and convolutional neural networks, have significantly improved image quality, reduced noise, and enhanced computational efficiency. These findings underscore Compton scattering’s clinical potential, especially in soft tissue visualization and early lesion detection. This paper provides a detailed overview of current progress and strategic pathways in the development of Compton based imaging systems towards their clinical application.
Co-Authors Abidin Pasaribu Abidin Pasaribu Abidin Pasaribu, Abidin Adam Darmawan Ade Kurniawan Ade Kurniawan Agustina, Atika Al Fatih, Zaky Alawiyah, Sakinah Amanda, Karenina Andriani, Nelly Apit Fathurohman Ari Widodo Arini Rosa Sinensis Atika Agustina Az Zahra, Lutfiah Azizah Putri Berimah Berimah, Azizah Putri Diah Kartika Sari Dina Maulina Dwi Purnomo Aji Dwicahyani, Rania Efrinalia, Winta Ernalida Ernalida Fena Siska Putriyani Firdausi, Huriyatul Fitra Ritonga, Ahmad Fitriyani Fitriyani Frida Ramadian Gelby Pradina Paramitha Hamdi Akhsan Hartono Hartono Hartono Hartono Hartono Hartono Hartono Hartono Herlambang, Dominikus Krisna Husna, Tsabita Ida Sriyanti Ida Sriyanti Iful Amri Iskhaq Iskandar Ismet Ismet Ismet, Ismet Jesi Pebralia Ketang Wiyono Ketang Wiyono Ketang Wiyono Kistiono Kistiono Kistiono Kistiono Kristylia Sury Laras Sapitri, Cindy Leni Marlina Manurung, Nia Three May Sari Melati, Pegi Meli Asma Desti Melvany, Nanda Eva Milka, Ikbal Adrian Mindia Vanessa Pratiwi, Sri Muhamad Yusup Muhammad afrizal Muhammad Aufa Riyaldo Muhammad Irfan Muhammad Irfan muhammad muslim Muhammad Muslim Muhammad Muslim Muhammad Muslim, Muhammad Muhammad Romadoni Muhammad Yusuf Muhammad Yusup Mulyadi Eko Purnomo, Mulyadi Eko Murnia Murniati Murniati . Muslimah, Resta Ulis Nely Andriani Nely Andriani, Nely Nilam Cahyati Novi Yusliani Nur Julia Ningsih Nurjannah Nurjannah Nuzula, Khalidatun Patriot, Evelina Astra Pertiwi, Nadiar Pratiwi Ineke Anwar Putra, Guruh Sukarno Putri Maulida, Nabila Putri, Astrid Yulinda Putri, Jamiatul Khairunnisa Putriyani, Fena Siska Rahmannisa, Amanda Rahmi Susanti Rahmi Susanti Rahmi Susanti Rahmi, Ani Ramadhani, Neysya Ditha Rara, Rara Ratu Ilma Indra Putri Redondo, Fernando Eric Rini Khoirunnisa Rita Inderawati Ritonga, Ahmad Fitra Rizki Novianti, Rizki Romadoni, Muhammad Sakinah Alawiyah Salmah Rianti Saparini Saparini Sardianto Markos Siahaan Sardianto Markos Siahaan, Sardianto Markos Sari, Dwita Kartika Sary Silvhiany Sayyendra, Amelia Putri Seprina, Iin Setiyowati, Devi Ariska Siti Nur Azizah Sri Mindia Vanessa Pratiwi Sri Zakiyah Sudirman Sudirman Sudirman Sudirman Sudirman, Sudirman Suhadi Suhadi Suhanda, Alfin Sunyono - - Supari Supari Supari Supari, Supari Suryaningsih, Ruth Magdalena Syarifudin, Agus Syuhendri, Syuhendri Taufiq Taufiq Tine Aprianti Tita Ratna Wulan Dari Utami, Amanda Kurnia Viyanti Viyanti Wati, Lira Diska Yenny Anwar Zahra Alwi, Zahra Zulherman Zulherman Zulherman Zulherman, Zulherman