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All Journal JTAM (Jurnal Teori dan Aplikasi Matematika) Zero : Jurnal Sains, Matematika, dan Terapan JURNAL MathEdu (Mathematic Education Journal) Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jambura Journal of Mathematics JPK: Jurnal Proteksi Kesehatan Jurnal Sistem Informasi dan Sistem Komputer Journal of Artificial Intelligence and Engineering Applications (JAIEA) Jurnal Ilmiah Teknik Informatika dan Komunikasi Regress: Journal of Economics & Management Innovative: Journal Of Social Science Research Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat GEMBIRA (Pengabdian Kepada Masyarakat)
Kartika, Dinda
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Development of Malay Deli Songket Motifs Based on Symmetry Groups Mingka, Rizka Annisa; Kartika, Dinda; Suwanto, Fevi Rahmawati
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 1 (2023): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i1.10279

Abstract

One of the tribes in North Sumatra Province that has a wide variety of art is the Deli Malays, especially the Songket motifs. Songket is a type of traditional Indonesian weaving that should be preserved to maintain Indonesia’s wealth. The motifs in the Malay Deli Songket can be analyzed because of its symmetrical pattern. In this study, the author developed the Malay Deli Songket motif based on the concept of the symmetry group. The motif development was carried out with the Matlab program based on the frieze group pattern and the crystallography group pattern. The Frieze pattern, often called the Frieze Group, is a symmetry group created from one-way translation, forming a linear pattern that repeats one way. The crystallography group has 17 crystallographic patterns formed by a specific transformation from each type of unit lattice. Through the development of motifs, 6 new Songket motifs were obtained based on the Frieze pattern in 11 observed Malay Deli Songket motifs, namely the Moon Orchid motif, the Orchid motif, the Balong Ayam motif, the Coffee Flowers motif, the Tobacco Leaves 1 and 2 motifs, the Corn motif, the Paddy motif, the Tampuk Manggis motif, the Tobacco motif, and the Ulam Raja motif. In 4 previously observed Malay Deli Songket motifs, 11 new Songket motifs were obtained for crystallography patterns: the Deli Tobacco Leaves motif, the Coffee motif, the Tampuk Gelugor motif, and the Undang Kupu-Kupu motif. 
Embedded TinyML for Predicting Soil Moisture Conditions in Rice Fields Using Weather Data Surbakti, Nurul Maulida; Kartika, Dinda; Amry, Zu; Ashari, Muhammad; Pahlawan, Riza
ZERO: Jurnal Sains, Matematika dan Terapan Vol 9, No 2 (2025): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v9i2.26551

Abstract

This study implements a lightweight TinyML model to classify soil moisture conditions and support irrigation decisions in rice cultivation, chosen over conventional cloud-based ML because it enables low-power, low-latency, fully offline inference on microcontrollers-critical for rural areas with limited connectivity. Trained on 3,021 localized microclimate records from Denai Lama Village (temperature, humidity, rainfall, cloud cover) using logistic regression for its simplicity and interpretability under resource constraints, the model was deployed on an ESP32 for real-time predictions into three classes (underwatered, optimal, overwatered). Experimental results show accuracy = 0.982 and weighted F1 = 0.982 on the validation set (ROC-AUC = 0.997), and on the held-out test set (N = 194) the model achieved 93.4% accuracy, 0.927 weighted F1 (precision 0.914; recall 0.942), and ROC-AUC = 0.988. These findings indicate that TinyML provides a practical, low-cost, and scalable edge-AI pathway for reliable, energy-efficient decision support in precision irrigation without network dependence, offering a deployable template for smallholder farming contexts.
Implementasi Algoritma Kriptografi RSA dalam Proses Enkripsi dan Dekripsi untuk Mengamankan Pesan Singkat pada Aplikasi Chatting Berbasis Web Surbakti, Nurul; Kartika, Dinda; Lestari, Alya Dwi; Puspita, Maysi; Pandiangan , Petra Putri Sarinah; Singarimbun, Riamonda; Suryani, Windi
Jurnal Ilmiah Teknik Informatika dan Komunikasi Vol. 5 No. 3 (2025): November: Jurnal Ilmiah Teknik Informatika dan Komunikasi 
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juitik.v5i3.1711

Abstract

The rapid development of information technology, especially in online communication, raises concerns about the security and privacy of transmitted messages. Cryptography serves as a primary alternative to protect information from unauthorized access. This study aims to implement the RSA (Rivest Shamir Adleman) cryptographic algorithm to secure short messages in a web-based chat application. The research method used was a mixed method, combining literature study and application development trials. The designed application uses the Flask framework for the backend, while HTML, CSS, and JavaScript are used for the user interface. The implementation results show that the RSA algorithm successfully converted plaintext messages (e.g., "Haii") into ciphertext (such as [7347,3641,4742,4742]) using a public key and accurately restored them to the original message using a private key, without any loss of information. This application offers an interactive and visual interface, making it easier for users to understand the RSA encryption and decryption process. Testing confirmed a consistency between manual calculations and the application's functions, proving that the system works stably and accurately. It is concluded that the RSA algorithm can be used effectively to protect short messages on web-based chat platforms, serving not only as a secure communication tool but also as an effective learning medium for asymmetric cryptography concepts. For future development, it is recommended to use larger prime numbers to enhance security, as well as to add features such as file sharing and group chats.
Aplikasi Web Image-To-Sketch Converter Berbasis Generative Adversarial Network (GAN) HSB, Rizky Suhaila; Pangestu, Aditya Ario; Oktaviany Simanjuntak, Theresia Grace; Kartika, Dinda
Jurnal Sistem Informasi dan Sistem Komputer Vol 11 No 1 (2026): Vol 11 No 1 - 2026
Publisher : STIMIK Bina Bangsa Kendari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51717/simkom.v11i1.956

Abstract

Penelitian ini bertujuan untuk mengembangkan aplikasi berbasis web yang mampu mengubah gambar menjadi sketsa secara otomatis menggunakan pendekatan Generative Adversarial Network (GAN). Model yang diimplementasikan merupakan adaptasi dari arsitektur Cycle-GAN yang dikenal efektif dalam transformasi citra tanpa pasangan data. Aplikasi ini dibangun menggunakan teknologi HTML, CSS, dan JavaScript, dengan integrasi TensorFlow.js yang memungkinkan proses inferensi langsung di peramban tanpa memerlukan server eksternal. Evaluasi kinerja dilakukan menggunakan metrik kuantitatif seperti Structural Similarity Index Measure (SSIM) dan Fréchet Inception Distance (FID). Hasil simulasi menunjukkan bahwa aplikasi menghasilkan sketsa dengan kualitas visual dan struktural yang cukup baik, dengan nilai SSIM rata-rata 0,78 dan FID sebesar 47,2. Aplikasi juga menunjukkan waktu respon yang cepat dan antarmuka yang ramah pengguna, menjadikannya solusi yang praktis dan efisien dalam bidang pengolahan citra digital. Penelitian ini membuktikan bahwa pendekatan GAN berbasis web dapat diterapkan secara efektif untuk menghasilkan sketsa dari citra dengan ketelitian dan kecepatan yang memadai.
Pemberdayaan Pembatik Lokal melalui Pendampingan Desain Batik Digital Menggunakan Aplikasi Ambatig Kartika, Dinda; Niska, Debi Yandra; Misgiya, Misgiya; Nasution, Hamidah; Febrian, Didi; Habibi, Rizki; Saputra S, Kana; Atmojo, Wahyu Tri
Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2026): Edisi Maret 2026
Publisher : FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/amalilmiah.v7i1.602

Abstract

Program pengabdian ini bertujuan meningkatkan kapasitas perajin batik melalui pendampingan desain batik digital menggunakan aplikasi Ambatig untuk mempercepat perancangan dan menata konsistensi pengulangan motif tanpa menghilangkan identitas Batak–Melayu. Kegiatan dilaksanakan selama empat minggu melalui sosialisasi, pelatihan, penerapan teknologi, dan pendampingan dengan pemanfaatan pengaturan pola frieze (satu arah) dan kristalografi (dua arah). Evaluasi melibatkan 15 peserta menggunakan angket skala Likert pada lima poin serta observasi terhadap durasi pradesain, jumlah varian desain, dan kesalahan sambungan pola. Hasil menunjukkan rerata kepuasan peserta di atas skor 4 dengan sekitar 80% respons positif, terutama pada aspek kesesuaian gaya visual (4,5) dan kemudahan dipelajari (4,3). Secara operasional, waktu pradesain berkurang dari sekitar 90 menit menjadi 40–50 menit per varian, peserta mampu menghasilkan 2–3 varian desain dalam 90 menit, dan kesalahan sambungan pola berkurang. Program ini juga menghasilkan portofolio desain digital berisi parameter siap produksi. Dengan demikian, pemanfaatan Ambatig efektif meningkatkan efisiensi dan kerapian perancangan motif batik serta mendukung pelestarian dan keberlanjutan motif Batak–Melayu melalui dokumentasi digital dan penguatan kapasitas perajin lokal.
Co-Authors Amry, Zu Ashari, Muhammad Cahaya, Puspa DIdi Febrian Didien Ika Setyaraini Gusmawati Gusmawati, Gusmawati Habibi, Rizki Hermawan Syahputra Hidayat, Finda Hikmah, Muziatun HSB, Rizky Suhaila Ida Ayu Putu Sri Widnyani Jamil, Jannatul Kana Saputra S Kundarti, Finta Isti Lasker Pangarapan Sinaga Lestari, Alya Dwi Mardiana, Annisya Marlinda Marlinda Mauliana Mauliana, Mauliana Mediawati, Mika Mingka, Rizka Annisa Misgiya, Misgiya Naibaho, Debora Elssaday Nainggolan, Agnes Margareta Nasution, Hamidah . Nasution, Muhammad Ibrohim Niska, Debi Yandra Nurul Ain Farhana Nurul Jannah Nurul Maulida Surbakti Oktaviany Simanjuntak, Theresia Grace Pahlawan, Riza Pandiangan , Petra Putri Sarinah Pangestu, Aditya Ario Pasaribu, M.Arya Puspita, Maysi Raja, Rinto Manik Ramadhani, Eliza Sadida, Wahyuni Sinaga, Marlina Singarimbun, Riamonda Sri Dewi Surbakti, Nurul Surbakti, Nurul Maulida Suryani, Windi Suwanto, Fevi Rahmawati Wahyu Tri Atmojo Zainuddin, Zainuddin Zulfahmi Indra, Zulfahmi