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All Journal Farmaka Jurnal Mahasiswa Farmasi Fakultas Kedokteran dan Ilmu Kesehatan UNTAN PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic Indonesian Journal of Pharmaceutical Science and Technology Jurnal Akuntansi dan Pajak Jurnal Pendidikan Informatika dan Sains Jurnal Komtika (Komputasi dan Informatika) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan ADMINISTRASI PUBLIK SEIKO : Journal of Management & Business Jurnal Surya Masyarakat JURNAL PENDIDIKAN TAMBUSAI Eksis: Jurnal Ilmiah Ekonomi dan Bisnis Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Ensiklopedia of Journal GERVASI: Jurnal Pengabdian kepada Masyarakat Pharmaceutical Journal of Indonesia JAE (Jurnal Akuntansi dan Ekonomi) Jurnal Ilmiah Ekonomi Global Masa Kini JISICOM (Journal of Information System, Infomatics and Computing) Jurnal Abdimas Mahakam Jurnal Review Pendidikan dan Pengajaran (JRPP) RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Jurnal Riset Terapan Akuntansi Syntax Idea ad-Dawaa : Journal of Pharmaceutical Sciences Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Surya Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Dinasti International Journal of Economics, Finance & Accounting (DIJEFA) Jurnal Revenue : Jurnal Ilmiah Akuntansi Voice Of Midwifery Hubungan Tingkat Pengetahuan Petugas Pengelola Obat dengan Tingkat Ketersediaan Obat Di Puskesmas Kota Malang Jurnal Promotif Preventif Jurnal ABDIMAS (Pengabdian kepada Masyarakat) UBJ Jurnal Jaring SainTek Jurnal Borneo Akcaya : Jurnal Penelitian dan Pengembangan Pelayanan Publik LINEAR: Journal of Mathematics Education Iqtishaduna : Jurnal Ilmiah Mahasiswa Hukum Ekonomi Syariah Journal of Students‘ Research in Computer Science (JSRCS) Jurnal Media Informatika Jurnal Abdimas Ekonomi dan Bisnis JOURNAL OF HUMANITIES, SOCIAL SCIENCES AND BUSINESS (JHSSB) Cermin Dunia Kedokteran Jurnal Bina Bangsa Ekonomika Journal of Trends Economics and Accounting Research Journal of Fundamental Mathematics and Applications (JFMA) Jurnal Kesehatan Kusuma Husada Pharmaceutical Sciences and Research (PSR) Jurnal Abdimas Musi Charitas Jurnal Manajemen Informatika dan Bisnis Digital Jurnal Ekonomi Bisnis, Manajemen dan Akuntansi (JEBMAK) Jurnal Desain dan Analisis Teknologi JEKSya Jurnal Ekonomi dan Keuangan Syariah International Journal of Information Technology and Computer Science Applications (IJITCSA) Gema Kesehatan Journal of Computer Science Contributions (Jucosco) Aktivasi: Jurnal Pemberdayaan Masyarakat Journal of Informatics and Information Security Jurnal Akuntansi RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi Journal Pharmacy of Tanjungpura Jurnal Komtika (Komputasi dan Informatika)
Rafika Sari
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Prediksi Perubahan Penggunaan Lahan dan Pola Berdasarkan Citra Landsat Multi Waktu dengan Land Change Modeler (LCM) Herlawati, Herlawati; Nidaul Khasanah, Fata; Dina Atika, Prima; Sari, Rafika; Handayanto, Rahmadya Trias
Jurnal Komtika (Komputasi dan Informatika) Vol 5 No 1 (2021)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/komtika.v5i1.5139

Abstract

Land use/cover greatly affect the quality of an area. Therefore, many regional planners need assistance byother fields, such as geoinformatics, computer science, environment, and others. Although prediction and forecasting have been widely studied, in regardto real conditions (geospatial)itstill needmoredevelopment, especially thoseinvolving a combination of regional types, such as urban and suburban areas. This study uses a remote sensing base and geographic information system in predicting land in the city and district of Bekasi, West Java, Indonesia. With two scenarios compared (business as usual and vegetation conservation), the model that has been created and validated (with an AUC accuracy result of 0.828) is used to predict land use change until 2030. Scenarios with vegetation conservation are able to keep green areas to switch to land types others, such as buildings and industry
Prediksi Curah Hujan Di Kabupaten Bogor Menggunakan Long Short-Term Memory Dan Gemma 2 Wijaya, Indra; Herlawati, Herlawati; Sari, Rafika
Jurnal Komtika (Komputasi dan Informatika) Vol 9 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/komtika.v9i1.13639

Abstract

Bogor Regency is an area that often experiences prolonged rainfall, especially during the rainy season. High rainfall causes problems such as floods and landslides. Therefore, accurate rainfall prediction is important for various needs, especially in disaster mitigation. This study aims to implement the Long Short-Term Memory (LSTM) algorithm as a model for prediction of historical rainfall data and use the Large Language Model (LLM) GEMMA 2 to provide interpretation of prediction results and recommendations based on the prediction results. The methods used include data collection from the BMKG online data website totaling 1804 data, data pre-processing, model building, model performance evaluation, and interpretation of results using LLM. The results of this study show that LSTM is able to produce the best performance by showing MSE 201.92 mm², Root Mean Square Error (RMSE) of 14.21 mm. the RMSE value shows an average error of 14.21 mm. In addition, the interpretation provided by LLM GEEMA 2 to help understand the prediction and provide practical recommendations for disaster mitigation due to rainfall.
Keamanan Sistem Login Menggunakan Multifactor Authentication dan Algoritma Hashing Fitriyani, Aida; Lubis, Hendarman; Yaddarabullah, Yaddarabullah; Sari, Rafika
Journal of Information System, Informatics and Computing Vol 9 No 2 (2025): JISICOM (December 2025)
Publisher : Sekolah Tinggi Manajemen Informatika dan Komputer Jayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52362/jisicom.v9i2.2137

Abstract

Login system security is a crucial aspect in digital application development to protect user personal data. This research aims to implement a modern hashing algorithm, Argon2, and add a security layer through Multi-Factor Authentication (MFA) using One-Time Password (OTP) codes. The Argon2 algorithm was chosen because it is memory-hard, configurable, and more resistant to brute-force attacks and rainbow table attacks. The system development method used is the Waterfall method, where the system is developed using the Kotlin programming language with the Jetpack Compose architecture, and the Firebase Authentication and Firestore databases. An OTP is sent to the user after successful registration as additional verification. Implementation results show that the time cost parameter in Argon2id significantly affects hashing execution time, with higher values improving security while remaining within performance tolerances. The combination of Argon2 and MFA successfully provides a more secure login system and is more resilient to cyberattacks than traditional authentication methods. Test results indicate that the Time Cost parameter in Argon2id significantly impacts hashing time. With the following configurations: Time Cost = 1 → 2.028 ms, Time Cost = 2 → 48.623 ms, and Time Cost = 3 → 71.219 ms. Higher parameter values increase execution time but also increase resistance to brute-force attacks. The combination of the Argon2 algorithm and MFA methods results in a more secure and reliable login system than traditional authentication, while remaining responsive in application performance.
Co-Authors Abdillah, Sabiq Abrar Hiswara Achmad H., Andy Adesta, Fillah Akhyar Rezqi Adi Muhajirin Adjar, Dinda Dwi Puspita Agati DJ, Sharlen Taurisya Agnes Sri Harti Ahmad Wildan Ahtian, Muzaid Aida Fitriyani Aida Fitriyani, Aida Aisyah Warsid Ajif Yunizar Pratama Yusuf Alexander, Allan D Almanda, Almanda Ana Hanapi Andani, Herlin Anggraini, Leriza Desitama Aprilianti Maharani Ardan, Raditia Muhammad Ardha Maliki Arifin, Muhammad Khoirul Aris Munandar As-Sanaj, Tyathanesia Dianfitri Ashardi, Muhammad Asni Amin Asyifa, Fatimah Nur Ayu, Visca Anindha Aziatul Febrian, Reny Aziatul Pebriani, Reny Azmi Mutawalli, Khoirul Azmi, Afif Fadhil Azzahra, Mutia A’lana, Lu’lu’ Bambang WIJIANTO Budi Mulyono Cahya, Nilam cahyani, dwi sinta Chyrza Adhea Salsabila Dahniar Dahniar Danu, Julian Firman Desitama Anggraini, Leriza Eka Nursafitri Eki Ayu Safitri Elfri Kartini Hutabarat Elsa Susanti Ema Damayanti Endah Dewi Purnamasari Endang Retnoningsih Fahiratunnisa, Namira Alifah Fajriaty, Inarah Faradilla, Aulia Fata Nidaul Khasanah Fatimah, Alida Zia Fatimah, Hervina Rahmawati Febrianti, Dwi Andini Ferdinan, Ade Fiorentina, Yulia Firdaus, Tiara Fitri, Diah Angraina Freolina, Putri Shanny Gita Widyawati Hafrizal Riza, Hafrizal Hamdan Sayadi, Muhammad Hamidah, Dhiya Azizah Hanapi, Ana Hegryselia, Hegryselia Helmy, Nur Hendarmin , Rum Hendarmin, Rum Hendharsetiawan, Andy Achmad Herlawati Herlawati Hermansyah Hermansyah Hidayatullah, M.Ridho Husnul Hotimah Idaul Hasanah Inne Miftah Dewi Intan Sari A Ira Wikartika, Ira Izza Della Nur Rizki Joniwarta Juhanda Kamil, Insan Kgs. M. Nurkholis Khairunnisa Azani Meilinasary Khairunnisa Azani Meilinasary, Khairunnisa Azani Khalida, Rakhmi Khoirotunnisa, Fani Kusdarnowo, Kusdarnowo Lastria, Lastria Lesi Hertati, Lesi Lestari, Nur’aini Puji Lia Deslianri, Lia Lili Syafitri, Lili Lisa Adhani Liza Pratiwi Lubis, Hendarman Lubis, Nuraina Fika Lukita Tripermata Manullang, Nathasya Grisella Marhamah, Faila Sufa Maulidia, Yuninta Maulidin, Juani Khuswara Mayadi, Mayadi Meilin Veronica Meiriasari, Vhika Meryansumayeka Meryansumayeka Mugiarso Muhammad Andre Reynaldi Muhammad Bahrul Ulum Muhammad Faris, Muhammad Muhammad Hamdan Sayadi Muhammad Saleh Muhammad Wadud Muhani, Mutiara Mukhlis Mukhlis Mutiara, Mega Muzakki, Muhammad Rafi Naim, Awaluddin Najib, Akmal Najini, Robby Nia Purnama Ningsih Ningrum, Citra Urba Nirwan Nirwan Novarizal, Safarin Novianti, Veni Novita Sari Nuansyah, Bayu Dwimas Nur Kholis NURUL AZIZAH Octaviani, Melly Pebriani, Reny Aziatul Periselo, Helen Prabandari, Rosiana Disiati Pramita, Julianti Pramitha, Ayu Pranoto, Imam Aji Prasetiawati, Fisca Ardi Pratama Lumban Tobing, Yoga Pratama, Aldira Ryan Pratama, Maulana Rifqi Pratama, Satrio Aji Pratiwi Apridamayanti Pratiwi Apridamayanti, Pratiwi Prima Dina Atika Puspita Sari, Ranti Puspita, Indira Diah Putra, Mgs Prima Darma Putra, Mgs. Prima Darma Putra, Prima Darma Putri Aisyah Putri Shanny Freolina Putri, Andini Utari Rafina Rafina Rahmadya Trias Handayanto Ramdhania, Khairunnisa Fadhilla Rasim Ratna Salkiawati Ratna Sari Ratu, Mutiara Kemala Raynaldi, Marinus Andre Reny Aziatul Febrian Rianita Rifadli, Syahril Risda Waris, Risda Robiyanto Robiyanto, Robiyanto Sabillah, Izzah Safrina, Nina Salsabila, Dio Ivanca Saputro, Sunu Febrian Eko Sari, Chrecencya Nirmalarum Sari, Mei Sastrawati, Nila Semmagga, Nuraeni Seta Samsiana Setiawan, Dwi Adi Sibarani, Steven Arrow Rinel Silfiana, Andi Silvia, Yuni Siti Nani Nurbaeti SITI SETIAWATI SRI RAHAYU Subarkah Subarkah Sugiyatno Sugiyatno Sulhan Faiz Susanti, Ressi Susilawati, Susilawati Suyati - Sylvia Utami Tunjung Pratiwi Tampubolon, Enggal Marito Yuliarti Tien Yustini, Tien Tripermata, Lukita Tyastuti Sri Lestari Umam, Ibni Khoerul uray rima triyanita Uswatun Hasanah Utari K Vegathree, Chandrika Raveena Veronica, Meilin veronica, Vera Wardian, Simon Wijaya, Indra Winda A. K. Winny Andarilla Wirdayanti Yaddarabullah, Yaddarabullah Yani, Resti Yevi Dwitayanti Yosi Bayu Murti Yusnaini, Tien Zikri, Tan Muhamad Zulkardi