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INDONESIA
E-Jurnal Matematika
Published by Universitas Udayana
ISSN : 23031751     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
E-Jurnal Matematika merupakan salah satu jurnal elektronik yang ada di Universitas Udayana, sebagai media komunikasi antar peminat di bidang ilmu matematika dan terapannya, seperti statistika, matematika finansial, pengajaran matematika dan terapan matematika dibidang ilmu lainnya. Jurnal ini lahir sebagai salah satu bentuk nyata peran serta jurusan Matematika FMIPA UNUD guna mendukung percepatan tercapainya target mutu UNUD, selain itu jurnal ini terbit didorong oleh surat edaran Dirjen DIKTI tentang syarat publikasi karya ilmiah bagi program Sarjana di Jurnal Ilmiah. E-jurnal Matematika juga menerima hasil-hasil penelitian yang tidak secara langsung berkaitan dengan tugas akhir mahasiswa meliputi penelitian atau artikel yang merupakan kajian keilmuan.
Arjuna Subject : -
Articles 3 Documents
 1 
Search results for , issue "Vol 13 No 3 (2024)" : 3 Documents clear
COMPARISON OF VISITS TO THE FACEBOOK WEBSITE USING THE FACEBOOK PROPHET AND SARIMA MODELS TRESNAWARDANI, NI PANDE LUH; SUMARJAYA, I WAYAN; WIDIASTUTI, RATNA SARI
E-Jurnal Matematika Vol 13 No 3 (2024)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2024.v13.i03.p457

Abstract

Facebook is widely used across various segments of society and offers significant potential as a marketing tool due to its diverse content and communication features. This study aims to forecast visits to the Facebook website for the period of March 2023 to February 2024 using two forecasting methods: the Facebook Prophet and SARIMA models. We analyzed 167 data points representing the percentage of visits to the Facebook website from April 2009 to February 2023, sourced from Statcounter. Our forecasting results indicate that the Facebook Prophet model yielded a Mean Absolute Percentage Error (MAPE) of 22.3% and a Root Mean Square Error (RMSE) of 16.2%. In comparison, the SARIMA model achieved a MAPE of 6.31% and an RMSE of 5.02%. Based on these accuracy metrics, the SARIMA model is determined to be more suitable for forecasting the percentage of visits to the Facebook social media website in Indonesia. This finding underscores the importance of selecting appropriate forecasting models for accurate predictions in social media analytics
PENYELESAIAN CAPACITATED VEHICLE ROUTING PROBLEM PADA PENDISTRIBUSIAN AIR GALLON MENGGUNAKAN ALGORITMA KOLONI LEBAH BENI, YAKOBUS; FRAN, FRANSISKUS; YUDHI, YUDHI
E-Jurnal Matematika Vol 13 No 3 (2024)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2024.v13.i03.p458

Abstract

Distribution is one of the problems in the business and industrial world, for example the problem of delivering supplies of raw materials and other goods to several customers, where the delivery must be carried out exactly once by one or more vehicles to each customer with a certain capacity. In its development, this problem was formulated as the Capacitated Vehicle Routing Problem (CVRP). Based on the definition, CVRP is one of the most common variations of the Vehicle Routing Problem (VRP) problem to determine the optimal route with the addition of constraints in the form of homogeneous vehicle capacity. Here, we discussed the CVRP problem of the distribution route for Pak Nurrofiq's gallons of water from the depot to its customers in the Taman Sei Raya Complex, Serdam Asri Complex and Kapuas Mas Complex. The aim of this research is to create a mathematical model for the CVRP problem in the distribution of Pak Nurrofiq's drinking water and solve it using the bee colony algorithm. The bee colony algorithm is a metaheuristic algorithm based on the behavior of honey bees in searching for food sources. The research results show that the case of gallon water distribution was successfully implemented into CVRP and completed using the bee colony algorithm, 4 routes were obtained with a total distance of all routes, namely 9,068 km.
ANALISIS MODEL PENGGUNAAN DOMPET DIGITAL PADA KALANGAN MAHASISWA PROGRAM STUDI MATEMATIKA FMIPA UNIVERSITAS TANJUNGPURA AZ ZAHRA, URAY NUR AFIFAH; PRIHANDONO, BAYU; PASARIBU, MELIANA
E-Jurnal Matematika Vol 13 No 3 (2024)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2024.v13.i03.p459

Abstract

Due to changes in the payment system caused by technological advancements in Indonesia, Bank Indonesia developed the Indonesia Payment System Blueprint 2025. This formulation focuses on initiatives to create a robust ecosystem that will steer the growth of digital finance in Indonesia, which is the ultimate goal of Bank Indonesia's long-term policy orientation. Bank Indonesia established the National Non-Cash Movement to provide a safe, effective, and seamless payment system. The purpose of this study is to examine the model of digital wallet usage and interpret the use of digital wallets among mathematics students at FMIPA Tanjungpura University. The modeling process begins with selecting parameters and forming assumptions to produce a mathematical model in the form of differential equations, finding equilibrium points, and conducting simulations. Data were obtained from questionnaires about the use of digital wallets distributed to 137 mathematics students in 2019–2022. Interpretation of the model of digital wallet usage among students of the Mathematics Study Program FMIPA Tanjungpura University obtained a cash payment-free equilibrium point obtained as = (,,) = (20.550,0,0) and obtained that the population of students who have the potential to use digital wallets has increased and the population of students who use cash payments has also increased due to the factor of digital wallet balances that have run out and make payments in cash, resulting in a decrease in the population of students who have used digital wallets.

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