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All Journal Pythagoras: Jurnal Matematika dan Pendidikan Matematika KADIKMA CAUCHY: Jurnal Matematika Murni dan Aplikasi Jurnal Daya Matematis UNEJ e-Proceeding BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) Jurnal Matematika UNAND JURNAL AXIOMA : Jurnal Matematika dan Pembelajaran JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Contemporary Mathematics and Applications (ConMathA) Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika Jurnal Diferensial Fraktal: Jurnal Matematika dan Pendidikan Matematika As-Sidanah : Jurnal Pengabdian Masyarakat Jurnal Ilmu Pendidikan Sekolah Dasar Pattimura Proceeding : Conference of Science and Technology CGANT JOURNAL OF MATHEMATICS AND APPLICATIONS Limits: Journal of Mathematics and Its Applications International Journal of Computing Science and Applied Mathematics-IJCSAM
Rafiantika Megahnia Prihandini
Program Studi Pendidikan Matematika, Universitas Jember, Indonesia
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Application on Hypergraph in Vigenere Chiper Asari, Okta Endri; Dafik, Dafik; Adawiyah, Robiatul; Kristiana, Arika Indah; Prihandini, Rafiantika Megahnia
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 10, No 1 (2026): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v10i1.34572

Abstract

Message protection remains a major focus in the field of cryptography. This study proposes a new development on the Caesar cipher algorithm by utilizing hypergraph as a keystream generation source. The research designs a super (a,d)-hyperedge antimagic total labeling method applied to three hypergraph structures (Volcano, Semi Parachute, and Comb) to generate the keystream. Security is evaluated using four mechanisms: brute force analysis, processing time, ciphertext character distribution, and ciphertext bit size. The findings prove that the hypergraph based approach is robust against brute force attacks, improve memory and time efficiency. Quantitatively, the Comb hypergraph demonstrates the best efficiency, achieving an encryption time of 0.0030 seconds for 512 bytes and superior storage efficiency (e.g., 136 bytes for 16 bytes ), outperforming the Semi Parachute and Volcano structures. The main contributions include the hypergraph labeling-based keystream generation algorithm, dynamic block key construction, and a Vigenere protocol that is more adaptive to storage constraints and computationally efficient..
Effectiveness of Digital Simulation-Based Learning Approach in Optimizing Students’ Understanding of Queueing Models Using Real-Life Data Arin Berliana Angrenani; Dian Kurniati; Susi Setiawani; Rafiantika Megahnia Prihandini; Ngizatul Afifah
(IJCSAM) International Journal of Computing Science and Applied Mathematics Vol. 11 No. 2 (2025)
Publisher : LPPM Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24775401.ijcsam.v11i2.8850

Abstract

This study examines indications of the effectiveness of a digital simulation-based learning approach in supporting students’ understanding of queueing models using real-life data. Aquasi-experimental one-group pretest–posttest design, supported by qualitative interview data, was conducted with 31 undergraduate mathematics education students at the University of Jember. The ExtendSim software was used to create interactive queueing simulations that allowed students to explore parameters such as arrival rate, service rate, and waiting time. Validity and reliability tests were conducted using item–total (Pearson) correlations and Cronbach’s alpha, with results indicating high validity (r > 0.5, p < 0.05) and high internal consistency (a > 0.80). A paired ttest showed a statistically significant increase in scores within this sample (t = 8.89, p < 0.001). Students’ perceptions of the simulation were highly positive, with an average Likert score of 3.23 (very high). Qualitative interviews further indicated that the simulations helped students visualize queue dynamics and relate theoretical concepts to real-life contexts. There were also indications of increased motivation, engagement, and computational thinking skills; however, these findings are limited by the single-site sample and the one-group study design.
Co-Authors Abdurrahman Salim Afifah, Ngizatul Afni, Anis Nur Agatha, Alvian Bagus Ahmad Musyaffa&#039; Hikamuddin Alfin Nabila Taufik Angrenani, Arin Berliana Arif Fatahillah Arika Indah Kristiana Arin Berliana Angrenani Asari, Okta Endri Bea Hana Siswati CahyaPrihandoko, Antonius D. Dafik Dafik Dana, Lusita Risma Deddy Setyawan Dewi, Mayra Fadhilla Dian Kurniati Ermita Rizki Albirri Hidayatullah, Arfan Hilwa Ainur Rizki Ika Hesti Agustin, Ika Hesti Kusumawati, Nurita Lestari, Deninta Dwi Ayu Lioni Anka Monalisa, Lioni Anka Muhammad Usaid Hudloir Ngizatul Afifah Orel Revo Sackhi Usdelivian Pradista, Vyke Triawilly Prahastiwi, Lusi Rizzami Putri, Inge Wiliandani Setya Ridho Alfarisi Ridho Alfarisi, Ridho Rizki Aulia Akbar Robiatul Adawiyah Robiatul Adawiyah Rohini, A Saddam Hussen Saranta, Nira Nityasa Setiawanai, Susi Siddiqui, M. Kamran Susi Setiawani Toto Bara Setiawan WIHARDJO, EDY Yunta, Girlyas Rasta Zulnaidi, Hutkemri