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Syafwan, Mahdhivan
Department Of Mathematics And Data Science, Faculty Of Mathematics And Natural Science, Universitas Andalas, Indonesia
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PEMBANGKITAN POLA SIMETRI P2 DARI SIMULASI SISTEM DINAMIK Rizky Prabowo; Mahdhivan Syafwan; Budi Rudianto
Jurnal Matematika UNAND Vol 11, No 4 (2022)
Publisher : Jurusan Matematika FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.11.4.210-219.2022

Abstract

Pola simetri p2 adalah pola simetri yang memenuhi simetri rotasi 180^o dan simetri translasi di sepanjang sumbu-x dan sumbu-y dengan periode tertentu. Dalam makalah ini akan dibahas pembangkitan pola simetri p2 dari simulasi sistem dinamik dengan menggunakan aplikasi Matlab. Dalam hal ini dilakukan terlebih dahulu analisis terhadap syarat dan pemilihan pada fungsi dinamik yang memenuhi sifat-sifat pada pola simetri p2. Dalam proses pembangkitannya pada Matlab, setiap titik pada suatu bidang dijadikan sebagai titik awal pada iterasi sistem dinamik, kemudian warna yang diberikan pada titik tersebut ditentukan dari jumlah iterasi yang dihasilkan melalui kriteria konvergensi Euclidean. Berdasarkan simulasi terhadap beberapa kombinasi nilai-nilai parameter pada fungsi-fungsi dinamik, dihasilkan pola-pola simetri p2 yang lebih variatif.
PENURUNAN METODE ELEMEN BATAS DAN APLIKASINYA PADA PENYELESAIAN PERSAMAAN LAPLACE NABIILAH JAHROO PRATIWI; Mahdhivan Syafwan; Riri Lestari
Jurnal Matematika UNAND Vol 12, No 1 (2023)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.12.1.1-14.2022

Abstract

Persamaan Laplace merupakan salah satu persamaan diferensial parsial yang banyak muncul pada masalah aliran panas. Dalam beberapa kasus yang lebih riil, persamaan diferensial parsial, termasuk persamaan Laplace, sulit diselesaikan secara eksak, sehingga sebagai alternatifnya digunakan metode numerik. Salah satu metode numerik yang sering digunakan untuk menyelesaikan masalah nilai batas pada suatu persamaan diferensial parsial adalah Metode Elemen Batas (MEB). Ide dasar dari MEB ini adalah solusi dari persamaan diferensial parsial dinyatakan ke dalam persamaan integral batas yang memuat solusi fundamentalnya. Pada metode ini batas domain dipartisi menjadi sejumlah segmen-segmen garis yang berhingga yang kemudian digunakan untuk mengevaluasi persamaan integral batasnya. Pada makalah ini MEB diimplementasikan pada penyelesaian persamaan Laplace dengan syarat batas campuran, yaitu syarat batas Dirichlet dan syarat batas Neumann. Dari contoh yang didemonstrasikan menggunakan aplikasi MATLAB, diperoleh hasil numerik yang cukup baik dalam menghampiri solusi eksaknya.
Application of PLS SEM in Evaluations of Mathematics Statistics II Course Online Learning IZZATI RAHMI; MAHDHIVAN SYAFWAN; HAZMIRA YOZZA; IQBAL HAMONANGAN; FRILIANDA WULANDARI
Jurnal Natural Volume 22 Number 1, February 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1763.517 KB) | DOI: 10.24815/jn.v22i1.23065

Abstract

The impact of the COVID-19 pandemic on the education sector includes the learning system that cannot be conducted directly (offline). With the change in the learning system, it is necessary to evaluate whether the implemented online learning system can run well and provide results as expected. The level of student satisfaction is one of the factors that can be used to evaluate online learning. This study analyzed the student satisfaction level with online learning for the Mathematics Statistics II course at the Mathematics Department of Andalas University, related to service quality by lecture and the level of student understanding. Data analysis was conducted using causal modeling, namely Partial Least Square Structural Equations Modeling (PLS-SEM). By using The PLS-SEM, it is known that there is a significant and positive effect of service quality on student satisfaction in the Mathematics Statistics II course. In addition, the service quality also affects the understanding level significantly and positively. However, the level of student understanding has no significant effect on the level of student satisfaction. The coefficient of determination (R2) from the structural model of student satisfaction toward the Mathematics Statistics II course online learning is 0.774. This value indicates that the resulting model is good because it has relatively high accuracy.
THE APPLICATION OF TRIDIAGONAL MATRIX ALGORITHM IN CUBIC SPLINE INTERPOLATION Elvathna Syafwan; EfendI -; Narwen -; Mahdhivan Syafwan
Jurnal Ipteks Terapan (Research Of Applied Science And Education ) Vol. 14 No. 3 (2020): Re Publish Issue
Publisher : Lembaga Layanan Pendidikan Tinggi Wilayah X

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.311 KB) | DOI: 10.22216/jit.v14i3.95

Abstract

Tridiagonal matrix algorithm is known to be more efficient in the computational process than theGaussian elimination method in solving linear system problems involving tridiagonal matrices. Inthis paper, the tridiagonal matrix algorithm is applied to the cubic spline interpolation problem withnatural boundary conditions. In this case, the tridiagonal matrix algorithm plays a role in findingthe second derivative of each cubic spline sub-function so that it is more efficient in obtaining thecoefficients of the third order polynomials that form the cubic spline function
FORECASTING UNEMPLOYMENT IN INDONESIAUSING WEIGHTED MOVING AVERAGE METHOD Havid Syafwan; Pristiyanilicia Putri; Mahdhivan Syafwan
JURTEKSI (Jurnal Teknologi dan Sistem Informasi) Vol 9, No 4 (2023): September 2023
Publisher : STMIK Royal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33330/jurteksi.v9i4.2624

Abstract

Abstract: Unemployment is a global economic issue that directly impacts human life in both developed and developing countries, especially in Indonesia, which, if ignored, will severely impact society's social dynamics. To overcome this problem, forecasts are made so that later, the government can take policies to control and suppress the unemployment growth rate. This research aims to predict unemployment in Indonesia in 2023 using the Weighted Moving Average method, widely used to determine the trend of a time series, which is part of one of the Time Series methods that gives different weights. The dataset used was obtained from the Central Statistics Agency (BPS) relating to unemployment data from 2000 to 2022 (23 years). To analyze the level of accuracy of the results of this unemployment forecast using the MAD, MSE, and MAPE methods. This research concludes that the Weighted Moving Average method can be applied in predicting unemployment in Indonesia in 2023. The results of this research are a prediction of the number of unemployed in Indonesia, as many as 8,874,942 people at a weight value of 3 (three) where the accuracy of the MAD value is 745786.1833, the MSE value is 948402050986.3 and MAPE is 8.28%. Keywords: forecasting; unemployment; weigth moving average; indonesia Abstrak: Pengangguran menjadi isu ekonomi global yang berdampak secara langsung terhadap tingkat kehidupan manusia di negara-negara yang sudah maju maupun yang sedang berkembang khususnya di negara Indonesia, yang jika diabaikan akan berdampak serius terhadap dinamika sosial masyarakat. Untuk mengatasi permasalahan tersebut dibuatlah peramalan agar nantinya pemerinta dapat mengambil kebijakan dalam mengendalikan dan menekan angka pertumbuhan pengangguran tersebut. Penelitian ini bertujuan untuk memprediksi pengangguran di Indonesia pada tahun 2023 menggunakan metode Weighted Moving Average dimana metode ini banyak digunakan untuk menentukan trend dari suatu deret waktu yang merupakan bagian dari salah satu metode Time Series yang memberikan bobot yang berbeda-beda. Adapun dataset yang digunakan diperoleh dari Badan Pusat Satatistik (BPS) berkaitan dengan data pengangguran dari tahun 2000 sampai dengan tahun 2022 (selama 23 tahun).  Untuk menganalisa tingkat akurasi dari hasil peramalan pengangguran ini memakai metode MAD, MSE, dan MAPE. Kesimpulan dari penelitian ini yaitu dapat diterapkannya metode Weighted Moving Average dalam memprediksi pengangguran di Indonesia pada tahun 2023. hasil dari penelitian ini berupa prediksi jumlah pengangguran di Indonesia sebanyak 8.874.942 orang  pada nilai bobot 3 (tiga) dimana akurasi nilai MAD sebesar 745786,1833, nilai MSE sebesar 948402050986,3 dan MAPE sebesar 8,28 %. Kata kunci: peramalan; pengangguran; weigth moving average; indonesia
VARIASI POLA SIMETRI ROTASI 90 DERAJAT DARI SIMULASI SISTEM DINAMIK DENGAN TIGA TES KONVERGENSI Kintan Febri Cania; Mahdhivan Syafwan; Arrival Rince Putri
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 4 No. 2 (2023): 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.v4i2.397

Abstract

This article reviews the  symmetry pattern which has  rotational symmetry and translational symmetry along the -axis and -axis. The  symmetry pattern is generated through the implementation of Matlab application using discrete dynamical system simulation, after analysing the requirements and determining the appropriate dynamical function. In this context, each point on the plane serves as the starting point in the iteration of the dynamical system. The colour assigned to each point is determined by the number of iterations performed. The generation of the  symmetry pattern involves three convergence tests, namely the Euclidean Test, the Fractional Distance Test, and the Maximum Distance with Weighted test. Through a variety of dynamic function parameter combinations, a more visually appealing and diverse range of  symmetry patterns is obtained.
PEMBANGKITAN POLA SIMETRI P3 DARI SIMULASI SISTEM DINAMIK Syukri Hamdi; Mahdhivan Syafwan; Narwen Narwen
Jurnal Matematika UNAND Vol 12, No 4 (2023)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.12.4.318-328.2023

Abstract

Pola simetri p3 memiliki simetri translasi pada sumbu-x dan sumbu-y, serta simetri rotasi sebesar 120. Dalam makalah ini akan dibahas pembangkitan pola simetri p3 menggunakan aplikasi MatLab melalui simulasi sistem dinamik. Pertama-tama, dilakukan analisis untuk menentukan fungsi dinamik yang memenuhi sifat-sifat pola simetri p3. Kemudian, pada proses pembangkitannya di MatLab, setiap titik pada bidang digunakan sebagai titik awal iterasi sistem dinamik, dan warna pada titik tersebut ditentukan berdasarkan jumlah iterasi yang dihasilkan melalui tiga kriteria konvergensi, yaitu Tes Euclidean, Tes Jarak Fraksional, dan Tes Jarak Maksimum. Dengan mensimulasikan beberapa kombinasi nilai-nilai parameter pada fungsi-fungsi dinamik dan menggunakan ketiga kriteria konvergensi, diperoleh berbagai pola simetri p3 yang lebih bervariasi.
BILANGAN R-M-H UNTUK GRAF LINTASAN P_4 DAN GRAF RODA W_n DENGAN n>=3 Nadya Citra Multasya; MAHDHIVAN SYAFWAN; SYAFRIZAL SY
Jurnal Matematika UNAND Vol 12, No 2 (2023)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.12.2.135-143.2023

Abstract

Diberikan dua graf G dan H serta bilangan asli j>=2. Bilangan Ramsey multipartit himpunan (R-M-H) M_j(G,H) adalah suatu bilangan bulat positif terkecil t sedemikian sehingga untuk sebarang faktorisasi K_(txj) = F_1 + F_2 senantiasa F_1 memuat subgraf G atau F_2 memuat subgraf H. Pada artikel ini akan ditentukan M_3(P_4,W_n) dimana P_4 adalah suatu graf lintasan yang terdiri dari 4 simpul dan W_n adalah suatu graf roda yang terdiri dari n+1 simpul dengan n>=3.
Application of PLS SEM in Evaluations of Mathematics Statistics II Course Online Learning IZZATI RAHMI; MAHDHIVAN SYAFWAN; HAZMIRA YOZZA; IQBAL HAMONANGAN; FRILIANDA WULANDARI
Jurnal Natural Volume 22 Number 1, February 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v22i1.23065

Abstract

The impact of the COVID-19 pandemic on the education sector includes the learning system that cannot be conducted directly (offline). With the change in the learning system, it is necessary to evaluate whether the implemented online learning system can run well and provide results as expected. The level of student satisfaction is one of the factors that can be used to evaluate online learning. This study analyzed the student satisfaction level with online learning for the Mathematics Statistics II course at the Mathematics Department of Andalas University, related to service quality by lecture and the level of student understanding. Data analysis was conducted using causal modeling, namely Partial Least Square Structural Equations Modeling (PLS-SEM). By using The PLS-SEM, it is known that there is a significant and positive effect of service quality on student satisfaction in the Mathematics Statistics II course. In addition, the service quality also affects the understanding level significantly and positively. However, the level of student understanding has no significant effect on the level of student satisfaction. The coefficient of determination (R2) from the structural model of student satisfaction toward the Mathematics Statistics II course online learning is 0.774. This value indicates that the resulting model is good because it has relatively high accuracy.
BENTUK EKSPLISIT RUMUS BEDA MAJU DAN BEDA MUNDUR UNTUK TURUNAN KE-N DENGAN ORDE KETELITIAN KE-N BERDASARKAN DERET TAYLOR Ikhsan Fachriansyah Putra; Mahdhivan Syafwan; Monika Rianti Helmi; Admi Nazra
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 4 No. 3 (2023): 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.v4i3.461

Abstract

In this paper, we aim to derive the explicit forms of forward and backward difference formulas based on the Taylor series. These formulas are employed to approximate the N-th derivative of a single-variable function with N-th order accuracy. The explicit formula is determined by utilizing the properties of the determinant of the Vandermonde matrix. Subsequently, we apply the obtained formulas to an example case involving a first-order ordinary differential equation
Co-Authors Aadrean Aadrean Abdul Zaky Admi Nazra AGUNG ALVIAN NOOR Ahmad Ripai Ahmad Ripai Ahmad Syarif Alfiany, Noverina Amalina . Amanatul Firdausi Arrival Rince Putri Asdi, Yudiantri Asfa, Riza Azadi, Azzahro Fitri Bahri, Susila Baqi, Ahmad Iqbal Boy Angga Budi Rudianto Budi Rudianto Bulandari, Manisya Danny Irwan Dea Desdwiria Putri Deasy Wahyuni Delsiana Boneta Devi Sari Ramadhini Dilla, Rahma Dwi Sulistiowati EFENDI EFENDI . Efendi Efendi Efendi Efendi Efendi, Riswan Eka Asih Kurniati Elsa Wahyuni Elvathna Syafwan FARRAS VITASHA PUTRI Fatmi Dinika Febri Daus FRILIANDA WULANDARI GHEA RATU ANNISA Gusrian Putra Hadi Susanto Hamdi, Syukri Hanifah Azzaura Musyayyadah Haripamyu Haripamyu Havid Syafwan Hazmira Yozza Helmi, Monika Rianti Hilda Fahlena Ikhsan Fachriansyah Putra ILMA PUTERI Indah Citra Apsari IQBAL HAMONANGAN Izzati Rahmi HG Izzati Rahmi HG Jenizon Jenizon KINTAN FEBRI CANIA Kintan Febri Cania Lidya Pratiwi Maidilla Iswari Maiyastri, Maiyastri Maya Nabila Maya Sari Syahrul Mohamad Nazri Abdul Halif Muhafzan Muhafzan Muhammad Firman Pebrizal Multasya, Nadya Citra NABIILAH JAHROO PRATIWI Nadya Citra Multasya Nanda Ardielna NANDA MUTIA UTAMA Narwen Narwen Nelfi Nelfi Netris, Zita Putri Nova Noliza Bakar Noverina Alfiany Nurweni Putri Nurwijayanti Pristiyanilicia Putri PUTERI, ILMA PUTRI HANDAYANI Putri, Pristiyanilicia Radhiatul Husna Rahmatullah Siregar, Fauzi Rati Febrianti RATNA HAYANI TSANI Riki Andri Yusda Riri Lestari Riri Lestari Riski Kurniawan Risna Julita Rizky Prabowo Saidah, Muthiah As Samat, Nor Azah Setia Wahyuni Silvia Rosita Suci Rahma Nura Syafrizal Sy Syafrizal Sy, Syafrizal Syafwan, Elvathna SYED ABDUL JABAR Syukri Hamdi Tissa Putri Yunita Trengginas Eka Putra Sutantyo Tresnawati, Shandy Visca Amelia S Wahyu Hidayat Wahyu Hidayat Wardatul Jannah William Ramdhan Windi Oli Viera WIRA AMLIZA Wulandari, Yana Yanuar, Ferra Yulianti, Lyra Zalfa Ahmad Syauqi Zulfi Abdullah