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Junaidi, S.Pd., M.Pd.
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l. Majapahit No. 62 Mataram, Nusa Tenggara Barat, Indonesia Lantai 2 gedung E, Program Studi S1 Pendidikan Matematika, FKIP Universitas Mataram
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INDONESIA
Mandalika Mathematics and Educations Journal
Published by Universitas Mataram
ISSN : 27158292     EISSN : 27151190     DOI : 10.29303/jm
Core Subject : Education,
Mathematics
Mandalika Mathematics and Education Journal adalah Jurnal Matematika dan Pendidikan Matematika yang dikelola oleh Program Studi S1 Pendidikan Matematika FKIP Universitas Mataram. Fokus dan ruang lingkup dari jurnal ini adalah artikel ilmiah baik berupa hasil penelitian, review artikel maupun kajian pustaka khusus bidang Matematika dan Pendidikan Matematika.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 513 Documents
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Keamanan Data Berbasis Representasi Dimensi Partisi Graf Siklus Amrullah Amrullah; Junaidi Junaidi; Ratna Yulis Tyaningsih; Nilza Humaira Salsabilla; M. Gunawan Supiarmo; Meiliza E.R.
Mandalika Mathematics and Educations Journal Vol 8 No 3 (2026): Edisi September
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v8i3.13612

Abstract

This study develops and evaluates the PDE-SEC (Partition Dimension--Security) prototype for securing .tex files using vertex representation codes on the cycle graph C256. Each byte value is mapped to a graph vertex and represented using a three-class resolving partition. The representation codes are incorporated into a key-dependent permutation, followed by a SHA-256-based keystream transformation and HMAC-SHA-256 for integrity verification. Experiments were conducted on 15 .tex files using correctness, file size, overhead, encryption and decryption time, throughput, entropy, correlation, avalanche effect, and key sensitivity. All 15 files were successfully recovered. The cumulative original size of 481,582 bytes became 483,502 bytes after encryption, corresponding to 0.3987% aggregate overhead. Total encryption and decryption times were 0.457746 s and 0.752114 s, with aggregate throughputs of 1.0521 MB/s and 0.6403 MB/s, respectively. Mean ciphertext entropy was 7.9815 bit/byte, mean absolute correlation was 0.00739, and recorded key sensitivity was 50.0238%. The initial avalanche result cannot yet be treated as a final measure because the paired tests used different nonces. Overall, PDE-SEC successfully transformed and recovered the tested files with low size overhead and ciphertext statistics close to a uniform distribution; controlled avalanche testing with the same nonce is still required before stronger security conclusions can be drawn.
Analisis Faktor-faktor yang Mempengaruhi Kemampuan Membaca Pemahaman Siswa di Kelas V SDN Loang Tuna Lombok Tengah Lailatul Hafizoh; Ati Sukmawati; Rosa Desmawanti
Mandalika Mathematics and Educations Journal Vol 8 No 4 (2026): Edisi Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Reading comprehension is an essential skill for elementary school students in understanding information contained in texts. This study aims to analyze the factors related to the reading comprehension ability of fifth-grade students at SDN Loang Tuna, Central Lombok. The study employed a descriptive qualitative approach involving the fifth-grade teacher and 22 students as research subjects. Data were collected through observation, interviews, and documentation, and analyzed through data reduction, data presentation, and conclusion drawing. The results showed that four factors were related to students’ reading comprehension ability, namely reading interest, vocabulary mastery, school environment, and parental attention. Of the 22 students, 7 students showed low reading interest, 5 students had limited vocabulary mastery, 4 students showed a relationship between the school environment and the reading process, and 6 students experienced limited parental attention. These factors were related to students’ difficulties in understanding the content of texts, identifying main and supporting ideas, drawing conclusions, and understanding the messages conveyed in the texts. Therefore, reading comprehension ability is related to students’ internal conditions as well as support from the school environment and family.
EKPLORASI ETNOMATEMATIKA WISATA BUKIT SULAP KOTA LUBUKLINGGAU DALAM PEMBELAJARAN MATEMATIKA SMP KELAS IX Khathibul Umam Zaid Nugroho; Destha Ulandari; Rahmi Novalina
Mandalika Mathematics and Educations Journal Vol 8 No 4 (2026): Edisi Desember
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jm.v8i4.12635

Abstract

Mathematics is often perceived by students as an abstract subject disconnected from their everyday cultural reality, resulting in limited engagement and contextual understanding in the classroom. This study aims to describe mathematical activities at the Bukit Sulap tourist attraction in Lubuklinggau City and analyze the results of their implementation in mathematics learning for ninth-grade junior high school students. This is a qualitative study with an ethnographic approach. The ethnographic approach was used to gain an in-depth understanding of the representation of cultural forms and architectural structures at Bukit Sulap as they relate to mathematical concepts. This study employed a qualitative method with a descriptive approach. Primary data were obtained through tests, interviews, and documentation, while secondary data came from literature studies. Data analysis followed the stages of Miles and Huberman: data reduction, data presentation, and conclusion drawing. The results show that the cultural and environmental objects at the Bukit Sulap tourist attraction give rise to various mathematical activities relevant to ninth-grade material. These activities include: (1) congruence and similarity, seen in the shapes of fences, pillars, and building structures that have similar proportions; (2) transformation geometry (mirroring) seen in the symmetrical patterns of pillars, roofs, and ornaments that have mirror images; and (3) spatial structures, such as the shape of the gazebo roof which resembles a cone or pyramid, and lamp posts which are shaped like tubes. The activities of designing, measuring, and calculating carried out by the community or visitors show the application of the concept of flat and spatial structures in real life.

Page 52 of 52 | Total Record : 513

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