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Journal of Mathematics UNP
Published by Universitas Negeri Padang
ISSN : 23551658     EISSN : 28073460     DOI : http://dx.doi.org/10.24036/unpjomath.v7i3.12564
Core Subject : Science, Education,
Computer Science & IT Decision Sciences, Operations Research & Management Mathematics
Journal of Mathematics UNP is a journal to publish article from student researches in UNP Mathematics study program, and we also kindly accept other article from outside of our study program related to Mathematics: consists of publication in Algebra, Analysis, Combinatoric, Geometry, Differential Equations, Graph and/or Mixed Mathematics Applications: consists of publication in Application of Differential Equations, Mathematics Modelling, Mathematics Physics, Mathematics Biology, Financial Mathematics, Application of Graph and Combinatorics, Optimal Control, Operation Research, and/ or Mixed Statistics: consists of publication on Development and/ or Application of statistics in various aspects.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 404 Documents
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Analisis metode chi_squared automatic interection detection untuk klasifikasi uang jemput pada tradisi pernikahan di kecamatan pariaman utara Ardatama, Rahul; helma, hema
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13819

Abstract

One of the areas in Minangkabau which is famous for its marriage customs is Pariaman. Because there is a bajapuik tradition that requires a uang jemput for Ajo Piaman. According to the Head of the Nagari Customary Density in North Pariaman District, Ajo Piaman's uang jemput are certainly different and the factors that affect Ajo Piaman's uang jemput are employment, education, age, income, title, marriage, property, and year of marriage. The population of this study is partly Ajo Piaman and the sample is 100 Ajo piaman in North Pariaman District who are married. The purpose of this study was to determine the factors that affect Ajo Piaman's uang jemput and to find out the results of the classification of Ajo Piaman's uang jemput using CHAID analysis. The results of this study indicate that education, income and year of marriage factors affect uang jemput in North Pariaman District.
Estimasi Value At Risk (VaR) Kunjungan Wisatawan Mancanegara Ke Sumatera Barat Maulani, Fiqrah; Rosha, Media
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13991

Abstract

West Sumatra Province  has become one of the destinations for foreign tourists to travel. There are many types of tourism in West Sumatra, ranging from cultural tourism, sports tourism, religious tourism, and culinary tourism. Because of this existing tourism potential, it is necessary to estimate the maximum loss from tourist visit revenue. One of the risk management for tourism budget losses is by using the Value at Risk method. Value at Risk , namely estimation of the biggest potential loss for a certain period with a certain level of confidence and normal market conditions. Estimation VaR is carried out for forecasting the number of foreign tourist visits from Jan-Jun 2022 with α=5%. The budget issued by the West Sumatra Provincial Office for tourism development is IDR. 209.481.220,00. Then obtained VaR value of  IDR.  112.801.838.04. This means that the biggest loss opportunity borne by the Provincial Government of West Sumatra in the next month from foreign tourist visits to West Sumatra is IDR 112,801,838.04 against a value of IDR 872,400,000.00.
Analisis Pemilihan Supplier Bahan Baku Menggunakan Multi-Choice Goal Programming (Studi Kasus: Jagung Super Manis F1 Aina Batuhampar) Filfiqri, Hamimatul; Sari, Devni Prima
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13835

Abstract

Supplier selection is a stage to determine the best suppliers needed by industry players to provide materials or raw materials in the production process. To obtain quality raw materials, companies must be selective in choosing suppliers. The study aims to facilitate the decision-making process in selecting raw material suppliers for Aina Batuhampar Super Sweet Corn F1 with Multi-Choice Goal Programming. This study analyzes the loss value for each criterion with the TLF and determines the weight value of each criterion with the AHP. These represent both of them the coefficients of MCGP is to determine the best supplier using Lindo software. The objective function by calculating using Lindo, we conclude that the best supplier priorities for Aina Batuhampar's F1 super sweet corn sequentially E, A, C, D, and B with respective cost are Rp. 7.175, Rp. 92.534, Rp. 104.222, Rp. 110.171, and Rp. 110.603.
Analisis Faktor Pada Faktor-Faktor Yang Mempengaruhi Stres Guru SD Selama Sistem Pembelajaran Daring Era Covid-19 (Studi Kasus di SD Kecamatan Padang Timur) Fadilah, Dinda; Rosha, Media
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13990

Abstract

Stress is one of the effects that arise due to the covid-19 pandemic, one of which is experienced by teachers at the elementary school level. This can happen because at the elementary school level, if it is seen from students who are only 7-12 years old, who are still ordinary in terms of using technology, elementary school teachers feel more difficult to carry out online learning process. The purpose of this study is to find out what factors significantly affect the stress of elementary school teachers in the subdistrict of Padang Timur during the online learning system in the covid-19 era. This type of study was an applied study with the spread of the questionnaire among 88 respondents selected using the random sampling cluster method. The results of the study were obtained by seven factors that influenced the stress of elementary school teachers in the subdistrict of Padang Timur during the covid-19 online learning system including educational factors, learning implementation factors, teacher's information technology skills factors, learning process and assessment factors, family factors, the low motivation for students' learning and media factors for online learning.
Fuzzy Service Quality dalam Analisis Kepuasan Pengunjung terhadap Kualitas Pelayanan Objek Wisata Kapalo Banda Dipinta, Yona; Helma, Helma
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13842

Abstract

Kapalo Banda is one of the tourist attractions located in Fifty Cities Regency. The research conducted in Kapalo Banda is related to visitor satisfaction for the elements of the services provided by applying the fuzzy service quality method. Fuzzy service quality is a combination of service quality methods and fuzzy logic. The service quality method can measure service quality based on five dimensions, namely: physical evidence (tangible), reliability (reliability), responsiveness (responsiveness), assurance (assurance), empathy (emphaty). Based on the results of this study, it was found that visitors were not satisfied with the services they received. This is because there are five positive gap values and ten negative gap values. Therefore, it is necessary to make improvements. The attribute that is used as a reference for improvement is the one with the highest negative gap value.
Model Matematika Tipe SIQR Penyebaran Penyakit Difteri Dengan Pengaruh Vaksinasi Putra, Kevin Pramana; Rosha, Media
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13993

Abstract

The Bacteria Corynebacterium diphtheria is the cause of the possibly deadly infectious disease diphtheria. The esophagus and upper respiratory tract are attacked by these bacteria. This study’s objectives were to develop a mathematical model of diphtheria spreading of the SIQR tyoe with the influence of vaccination, analyze equilibrium point stability  and interpret  model simulation results. The type of research  is  theoretical research. This study uses descriptive methods to analyze theories about diphtheria. Two equilibrium points are obtained based on the analysis results of the SIQR model. When the basic reproduction number is less than 1, there exists an  asymptotically stable disease-free equilibrium point. On the other hand, if the basic reproduction number is greater than 1, there are two equilibrium points.Asymptotically stable endemic balance and  unstable disease-free balance. One way to control the spread of diphtheria is through vaccination. The higher the vaccination coverage, the more diseases will be eradicated from the population.
Simulasi Monte Carlo dan Penerapannya dalam Menentukan Probabilitas Pergerakan Saham Indeks LQ-45 Anastasia, Vira; Subhan, Muhammad
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13769

Abstract

The problem for investors when investing is determine stocks that have the opportunity to move up that they get maximum profits in the future. The purpose of this study is to determine the opportunities for movement of the LQ-45 index stock. This study uses data on closing prices for daily stocks listed the LQ-45 index in the period February 2021-January 2022. To find out the opportunities for stock movements, a monte carlo simulation is used which based on the stock price movement model, the stock price movement model is influenced by the latest stock price and brown geometry motion 100 times and 10000 times simulation for 10 days of stock trading. Based on the results of the simulation analysis, the average share price was Rp. 916 - Rp. 23000, the value of forecasting accuracy namely very good forecasting accuracy with an average error of less than 10%. Companies that have increased opportunities for 10 trading days in February 2022 are CPIN.JK, INCO.JK, INKP.JK, and TBIG.JK.
Analisis Metode Black-Scholes dan Monte Carlo Terhadap Penentuan Opsi Jual Eropa Megis, Febi Fortuna; Arnellis, Arnellis
Journal of Mathematics UNP Vol 7, No 4 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v7i4.13850

Abstract

Managing the risks that will occur when investing, things that can be done by trading options.  Stock options are used as a means of protection against stock price volatility.  Option price calculations are performed using two methods, namely the Black-Scholes method and the Monte Carlo method.  The purpose of this study is to determine the best method for determining option values.  This research is basic research.  The data used is the daily closing price of the pharmaceutical industry's shares in the New York Stock Exchanges (NYSE), namely Astra Zenecca and Abbott Laboratorie, the Dow Jones stock index, namely Pfizer Inc., Merck & Co Inc., and Johnson & Johnson for the period August 2022 to  November 2022 with a maturity of three months.  The results of the research show that the Price Absolute Error (PAE) is 18.75% or 0.1875 for the Black-Scholes method and 11.66% or 0.1166 for the Monte Carlo method, thus showing that the Monte Carlo method is more accurate than the Black-Scholes method for determining options.  selling Europe.
Prediksi Jumlah Pengunjung Perpustakaan Daerah Kabupaten Batang dengan Menggunakan Metode Fuzzy Time Series Chen-Hsu Rahmawati Rahmawati; M. Rafly Ramaesa Putra; Fitriani Muttakin
Journal of Mathematics UNP Vol 8, No 1 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i1.14231

Abstract

The Batang Regency Library is one of the places that is often visited by the local community. Analysis of library visiting patterns and predicting the number of visitors is very important to do, because this is the basis for planning effective policies for stakeholders to make librarians feel comfortable. The purpose of this study was to predict the number of visitors to the Batang Regency Regional Library in 2023. The Chen-Hsu Fuzzy Time Series method was used in this study because it provides a MAPE value which can provide easier proof of accuracy compared to other methods. The results showed that visitors to the Batang Regency regional library from 2018-2022, there was a decrease in 2021 to 2022, and according to forecasting results using the Fuzzy Time Series Chen-Hsu method, visitors to the Batang Regency Regional library did not change from the previous year and had an average average MAPE 15.56%, so the level of accuracy is good.
Analisis Risiko Investasi Saham Tunggal Syariah dengan Value at Risk (VaR) Menggunakan Simulasi Monte Carlo Afifah Humayrah; Devni Prima Sari
Journal of Mathematics UNP Vol 8, No 1 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i1.13375

Abstract

Investment is an activity to hold a number of funds with the aim of gaining future profits, one of which is by investing in the Islamic capital market. Islamic capital market instruments that can be used are shares. Stocks are known to have the characteristics of high risk and high return, not only bringing high profits but also carrying high risks. One of the measuring tools that can be used to measure risk is Value at Risk because it can estimate the maximum possible loss that can occur on a single asset at a certain level of confidence. The purpose of this study is to estimate the optimal risk obtained by using Value at Risk with Monte Carlo Simulation. The data used in this study is the closing price of shares of PT Telekomunikasi Indonesia, Tbk which is listed in the Jakarta Islamic Index (JII). Based on research using initial investment funds of 100,000,000.00, IDR the value of Value at Risk is -3,620,898.95 IDR at an error level of 1%, -2,709,707.70 IDR at an error level of 5% and -2.120.418.85 IDR at an error level of 10. %.

Page 27 of 41 | Total Record : 404

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