Article Per Year (5 Year)
p-Index From 2021 - 2026
4.53
P-Index
This Author published in this journals
All Journal Electronic Journal of Graph Theory and Applications (EJGTA) BAREKENG: Jurnal Ilmu Matematika dan Terapan International Journal of Computing Science and Applied Mathematics Jurnal Hilirisasi IPTEKS (JHI) Buletin Ilmiah Nagari Membangun Jurnal Matematika UNAND Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Multicience Jurnal Matematika Integratif
Admi Nazra
Andalas University. Department Of Mathematics
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 44 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 44 Documents
Search

 1   2   3   4   5 
SUATU KAJIAN TENTANG SOFT SET TERURUT LATTICE (LATTICE ORDERED SOFT SET) Andika, Witri; Nazra, Admi; Helmi, Monika Rianti
Jurnal Matematika UNAND Vol 13, No 4 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.4.287-295.2024

Abstract

Teori soft set pertama kali diperkenalkan oleh Molodsov sebagai suatu metode untuk menangani ketidakpastian. Metode ini mengkaji mengenai pengelompokan objek-objek yang memenuhi atau tidak memenuhi suatu parameter tertentu. Namun, dalam teori soft set tidak terdapat urutan dalam himpunan parameternya sehingga dikaji suatu teori yaitu lattice ordered soft set. Dalam tulisan ini akan dibahas konsep dari lattice ordered soft set,operasi-operasi pada lattice ordered soft set, sifat-sifat yang dapat diturunkan dari operasi-operasi tersebut, dan struktur aljabar dari lattice ordered soft set yaitu monoid dan hemiring.    
Peramalan Harga Minyak Mentah Dunia Menggunakan Metode Fuzzy Time Series Logika Singh Hasibuan, Sahroni; Asdi, Yudiantri; Nazra, Admi
Jurnal Matematika UNAND Vol. 13 No. 1 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.1.66-74.2024

Abstract

Minyak mentah merupakan komoditas dan sumber energi yang sangat dibutuhkan bagi pertumbuhan suatu negara. Harga minyak mentah mengalami peningkatan dan penurunan. Naiknya harga minyak mentah akan mempengaruhi perekonomian dan pasar keuangan. Sedangkan turunnya harga minyak mentah akan mengakibatkan masalah defisit anggaran yang serius bagi negara-negara pengekspor minyak. Oleh sebab itu perlu dilakukannya peramalan harga minyak mentah dunia untuk mengurangi dampak dari fluktuasi harga minyak mentah dunia tersebut. Metode peramalan yang dapat digunakan dalam meramalkan data time series harga minyak mentah dunia adalah dengan menggunakan metode fuzzy time series logika Singh. Data yang digunakan merupakan data sekunder yaitu data harga minyak mentah dunia WTI periode November 2014 hingga Juni 2022. Hasil peramalan data harga minyak mentah dunia dengan menggunakan metode tersebut kemudian diukur tingkat akurasinya menggunakan MAPE. Dari metode peramalan fuzzy time series logika Singh diperoleh nilai MAPE sebesar 0.30%. Berdasarkan hasil MAPE tersebut, peramalan harga minyak mentah dunia dengan model Singh mempunyai tingkat akurasi sangat bagus.
Reduksi Parameter pada Soft Set Zukri, Mhd; Nazra, Admi; Yanita, Yanita
Jurnal Matematika UNAND Vol. 13 No. 2 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.2.119-130.2024

Abstract

Soft set merupakan salah satu teori matematika yang mengkaji tentang ketidakpastian dalam suatu pengambilan keputusan dalam kehidupan sehari-hari. Di sisi lain, sering kali terjadi pengambilan keputusan dengan melibatkan data yang banyak. Terdapat kemungkinan beberapa data tersebut ada yang dapat diabaikan tanpa mengubah keputusan awalnya. Usaha untuk mengabaikan beberapa informasi yang berlebihan tanpa mengubah hasil keputusan awalnya disebut dengan reduksi parameter. Pada penelitian ini, dikaji kembali konsep reduksi parameter oleh Kong, dkk tahun 2008 yang menggunakan suatu metode dimana derajat kepentingan digunakan sebagai acuan untuk mereduksi parameter dalam pengambilan keputusan. Selanjutnya metode ini akan dibandingkan dengan algoritma alternatif yang mana proses reduksinya cukup dengan menghitung kelipatan dari banyaknya objek dalam pengambilan keputusan.
SUATU KAJIAN TENTANG SOFT SET TERURUT LATTICE (LATTICE ORDERED SOFT SET) Andika, Witri; Nazra, Admi; Helmi, Monika Rianti
Jurnal Matematika UNAND Vol. 13 No. 4 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.4.287-295.2024

Abstract

Teori soft set pertama kali diperkenalkan oleh Molodsov sebagai suatu metode untuk menangani ketidakpastian. Metode ini mengkaji mengenai pengelompokan objek-objek yang memenuhi atau tidak memenuhi suatu parameter tertentu. Namun, dalam teori soft set tidak terdapat urutan dalam himpunan parameternya sehingga dikaji suatu teori yaitu lattice ordered soft set. Dalam tulisan ini akan dibahas konsep dari lattice ordered soft set,operasi-operasi pada lattice ordered soft set, sifat-sifat yang dapat diturunkan dari operasi-operasi tersebut, dan struktur aljabar dari lattice ordered soft set yaitu monoid dan hemiring.    
The Matrix Transform the Vech* to Vecd* Operators Noviana, Lathifa Suci; HIDAYAH, NURUL; Yanita, Yanita; Nazra, Admi
Jurnal Matematika UNAND Vol. 13 No. 1 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.1.56-65.2024

Abstract

Artikel ini memperkenalkan dua matriks operator baru yang terinspirasi oleh definisi operator vecd, dan kami menyebutnya vecd*. Operator ini terkait dengan operator vech*. Operator ini dibangun dengan cara yang sama seperti operator vec, yaitu matriks berukuran mxn menjadi vektor kolom berukuran mnx1. Perbedaannya terletak pada susunan entri-entrinya yang menjadi vektor kolom. Pada operator vec, semua entri pada matriks mxn akan menjadi entri pada kolom vektor, namun vech dan vecd hanya menjadikan sebagian entri pada matriks mxn menjadi vektor kolom dengan aturan tertentu. Kami mencoba mendefinisikan vektor kolom. Kami juga menggunakan operator vech* dengan konstruksi yang berbeda dari vecd*. Kami secara eksplisit membuat matriks yang mengubah vech*(A) menjadi vecd*(A), di mana A adalah matriks nxn untuk n elemen N. Kami juga memperoleh beberapa properti dari matriks transformasi ini.
ALGORITMA PRIM YANG DIMODIFIKASI PADA MASALAH POHON PEMBANGUN MINIMUM FUZZY Puteri, Ilma; Syafwan, Mahdhivan; Nazra, Admi
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 6 No. 1 (2025): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v6i1.967

Abstract

This study aims to find the Minimum Spanning Tree (MST) on graphs with uncertain edge weights, which are modeled using triangular fuzzy numbers. To compare and sum the edge weights in determining the fuzzy MST, the layered average integration method is used. In graphs with crisp edge weights (real numbers), the MST problem can be solved using Prim's algorithm. This research develops and introduces a fuzzy version of Prim's algorithm to address the fuzzy MST problem on graphs with fuzzy edge weights. Additionally, an application example is provided to demonstrate the performance of the modified Prim's algorithm in determining the fuzzy MST. The results of this study offer an effective approach to handling uncertainty in graph edge weights using fuzzy methods and can be applied to various network problems involving data uncertainty.
UPAYA MEMBANGUN KARAKTER SISWA MELALUI INTEGRASI KONSEP HIMPUNAN DAN AL-QUR’AN DALAM PEMBELAJARAN MATEMATIKA Izzati Rahmi HG; Admi Nazra; Budi Rudianto; Mahdhivan Syafwan; Ferra Yanuar; Hazmira Yozza; Narwen Narwen; Monika Rianti Helmi; Maiyastri Maiyastri
BULETIN ILMIAH NAGARI MEMBANGUN Vol. 6 No. 4 (2023)
Publisher : LPPM (Institute for Research and Community Services) Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/bina.v7i4.538

Abstract

The Quran is the source of all knowledge, including mathematics. On the other hand, mathematics is closely related to everyday life and the development of other fields of knowledge. Mathematics is one of the disciplines closely connected to the verses of the Quran. Mathematics education is expected to improve to meet the advancements in time and technology continually. It is also anticipated that mathematics education can build the character of each student through religious values. This activity aims to introduce the concept of sets integrated with the content of verses found in the Quran. The activity was conducted as an online Zoom meeting and YouTube streaming seminar. Participants included mathematics lecturers, teachers, and students from Islamic junior and senior high schools from ten provinces in Indonesia. The event was titled "The Quran and Set Theory" and received high appreciation from the seminar participants. This was evident from the enthusiastic participation and numerous questions raised during the Q&A session. This activity has motivated teachers and lecturers to integrate the mathematical concepts learned with the Quranic verses. Teachers who participated in this activity are expected to act as agents in popularizing the method of integrated mathematics education with the content of Quranic verses, especially set theory.
FUZZY CALCULUS: A COMPREHENSIVE LITERATURE REVIEW Efendi; Admi Nazra; Mahdhivan Syafwan; Haripamyu
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 5 No. 02 (2025): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2025
Publisher : CV KULTURA DIGITAL MEDIA

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

Abstract

This report presents a literature review on Fuzzy Calculus, a field that emerged from the integration of classical calculus with fuzzy set theory. Classical calculus, although fundamental for modeling precise systems, has limitations in dealing with the uncertainty and ambiguity inherent in real-world phenomena. Fuzzy calculus extends the concepts of derivative and integral to the fuzzy domain, enabling modeling of dynamic systems involving uncertain variables. This report outlines the basic concepts, methodologies of fuzzy differentiation and integration, and highlights significant opportunities in dynamic systems modeling, optimization, control systems, artificial intelligence, and various cross-disciplinary case studies. In addition, theoretical and practical challenges including unique operation definitions, lack of standardization, result interpretation issues, and computational complexity are discussed. Finally, it presents future research directions of Fuzzy Calculus in the face of complexity and uncertainty in the modern world.
On the rainbow connection numbers of line, middle, and total graphs of wheels Yulianti, Lyra; Muhardiansyah, Muhardiansyah; Nazra, Admi
Electronic Journal of Graph Theory and Applications (EJGTA) Vol 13, No 1 (2025): Electronic Journal of Graph Theory and Applications
Publisher : GTA Research Group, Univ. Newcastle, Indonesian Combinatorics Society and ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/ejgta.2025.13.1.2

Abstract

An edge-colored graph G is called rainbow connected if any two vertices in G are connected by a path whose no two edges are colored the same. The rainbow connection of G, denoted by rc(G), is the smallest number of colors needed such that G be a rainbow connected graph. Similarly defined, an edge-colored graph G is called strong rainbow connected if any two vertices in G are connected by a geodesic path whose no two of its edges are colored the same. The strong rainbow connection for G, denoted by src(G), is the smallest number of colors needed such that G be a strong rainbow connected graph. This paper considers the determination of the rainbow connection and strong rainbow connection numbers of the line graph, the middle graph, and the total graph of a wheel Wn on n + 1 vertices.
A MAGDM ALGORITHM FOR DECISION-MAKING PROBLEMS ON FUZZY SOFT SETS USING A COEFFICIENT CORRELATION AND AN ENTROPY MEASURE FOR DETERMINING THE WEIGHT OF PARAMETERS Khairunnisa, Latifa; Nazra, Admi; HG, Izzati Rahmi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 3 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss3pp1503-1512

Abstract

In statistics, the correlation coefficient concept aims to show how strong the linear relationship between two variables is. Sometimes the data collected relates to everyday life problems whose value is uncertain. Therefore, the concept of correlation coefficient must be developed on the fuzzy sets and the fuzzy soft sets environment. In this study, a decision-making algorithm was designed on fuzzy soft sets using the concept of the correlation coefficient. The method used is MAGDM, where the parameter weights are determined using entropy measures. Using this method, the algorithm of our decision-making problem is more realistic and general. The final section gives an example of a decision-making problem and a numerical illustration using the designed algorithm.
Co-Authors Abdul - Majid Ahmad Surya Ahmad Syarif Aidil Adrianda Alfiany, Noverina Andika, Witri Arrival Rince Putri Asdi, Yudiantri Athia Nurindah Sari Aulia Nabila Bahri, Susila Baqi, Ahmad Iqbal Budi Rudianto DELLA, SEPTI RAHMA Des Welyyanti Devianto, Dodi DINDA HIDAYATUL ULYA Dwi Sulistiowati EFENDI Efendi Efendi FEBRI ANEZA Hanifa, Nurul Haripamyu Haripamyu Hasibuan, Sahroni Hazmira Yozza Helmi, Monika Rianti Hidayati Rais Hilda Fahlena I Made Arnawa Ikhlas Pratama Sandi Ikhsan Fachriansyah Putra Izzati Rahmi HG Izzati Rahmi HG Jenizon Jenizon Khairunnisa, Latifa LATHIFA SUCI NOVIANA Maiyastri, Maiyastri Majid, Abdul - Mawanda Almuhayar Maya Sari Syahrul Mhd Zukri Muhafzan Muhardiansyah Muhardiansyah Muhardiansyah, Muhardiansyah MUTHIA GUSRIATI Narwen Narwen Nova Noliza Bakar Noverina Alfiany Noviana, Lathifa Suci NURUL HIDAYAH Nurweni Putri Nurwijayanti PUTERI, ILMA Putri, Fadya Zahraini Radhiatul Husna RAHMAT OGI SENTOSA RIDHA FADHILA SANI Riri Lestari ROZI KOFILA PUTRI Sahroni Hasibuan Shodik, Fajar Silvia Rosita Sri Wahyuni Syafrizal Sy Syafrizal Sy, Syafrizal Syafwan, Mahdhivan Yanita . Yanita Yanita YANITA YANITA, YANITA Yanuar, Ferra Yulianti, Lyra Yulianti, Lyra Zukri, Mhd Zulakmal, Zulakmal