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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 15 Documents
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Search results for , issue "Vol 8, No 3 (2023): Journal Of Mathematics UNP" : 15 Documents clear
Optimasi Jumlah dan Lokasi Tempat Perhentian Bus (TPB) Trans Padang Koridor V dengan Model Set Covering Problem Engla Diva Sari; Media Rosha
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.14974

Abstract

Trans Padang is a bus managed by the Padang City government since 2014. One of the corridors on the Trans Padang bus is corridor V uses a Bus Stop. However, the existence of TPB Trans Padang corridor V is not optimal. The purpose of this research is to determine the optimal number and location of TPB is to use The Set Covering Problem Model. The data sought is the location where there may be crowds. Then the data is validated using the Cochran Q-Test so that the data becomes a point of request. Next, a set of cover problem will be made and will be solved with the Enumerasi Implicit method. The results of processing using the Enumersi Implicit method obtained that the optimal TPB was 26 TPB, with the addition of TPB locations in 10 locations, is RSU Bunda BMC Padang, Simpang Sawahan, Simpang Lubeg, Erick Minimarket, Pitameh Garden, Budiman Cengkeh, Hoya Cengkeh, MR DIY Banda Buek, Dalas Swalayan, dan MTS AL FATAH.
Pengendalian Persediaan Bahan Baku Keripik Balado Salsabila Menggunakan Metode Silver Meal Heuristic Viola Adinda; Helma Helma
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15083

Abstract

Inventory is a factor that decides the smoothness of production and sales so inventory must be controlled to produce minimum costs. The problems that occur in the Keripik Balado Salsabila Business are the use of erratically raw material supplies and the absence of raw material control, so a method is needed to deal with these issues. The research purpose is to compare the total inventory of raw materials between company policies and the method of Silver Meal Heuristic. The benefits of this method are to control inventory and reduce inventory costs. In controlling inventory, the data that is calculated is the five main raw materials for Keripik Balado, including cassava, oil, chili, salt, sugar and lime. The results obtained using the Silver Meal Heuristic method indicated savings in raw material inventory costs of IDR3.829.000 with a total efficiency of 16%. Thus, the method of Silver Meal Heuristic is better to use because it produces a smaller total inventory cost compared to company policy.
Aplikasi Machine Learning dalam Prediksi Harga Saham Jakarta Islamic Index (JII) Menggunakan Metode Support Vector Regression Lala Nur Faiza; Dina Agustina
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15110

Abstract

Investment is the process of allocating money into an asset with the goal of generating future profits. Investing in stocks generates higher returns but has a high risk as well. Therefore, the fluctuations in stock prices are very important so that investors need to analyze stock prices when making an investment. This study aims to apply machine learning in stock price prediction using the Support Vector Regression (SVR) method. JII stock data for the months of December 2021 to November 2022 were used in this study. Predicting stock prices is one of the processes in this research's data analysis processusing the Support Vector Regression (SVR) and then using RMSE to evaluate the model. The conclusions of this study indicate that SVR can be implemented as a method for predicting stock prices with the smallestRMSE values for ANTM, BRIS, and BRPT shares of0.0004.
Analisis Kojoin Full Profile Dalam Pemilihan Kerudung untuk Mahasiswi Departemen Matematika Universitas Negeri Padang Monica Pertiwi; Dewi Murni
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.14306

Abstract

The veil is a kind of scarf that covers most of the top of a woman's head. The veiled order is an obligation and obedience to Allah and His Messenger. Now there are many types of headscarves such as rectangular or pashmina headscarves, making female students have to be selective in choosing a headscarf according to their needs but still follow the existing trends. This research aims to the preferred combination of UNP Mathematics Department students in choosing a headscarf. This study showed that the combination that students liked the most was pashmina headscarves, ceruty, plain, price ≤Rp. 35,000. With the highest level utility value at the price attribute ≤Rp.35,000 with the highest relative importance value of 58.10%.
Metode Iterasi Orde Dua Trapesium untuk Menyelesaikan Persamaan Nonlinear Hammi Faliha; Muhammad Subhan
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15032

Abstract

Mathematical problems in determining the roots of nonlinear equations can be solved analytically and numerically. However, very complex nonlinear equations are difficult to solve analytically, so numerical methods are used. Trapezoid Second Order Iteration Method is a method that emerge because of the shortcomings of the Newton Raphson Method and The Secant Method. The purpose of this study is to examine the process of forming the formula for the Trapezoid Second Order Iteration Method, develop an algorithm and find its convergence. This type of research is basic research. The result of numerical simulation tests on several function whose approach point are at two peaks show that The Trapezoidal Second Order Iteration Method is faster than Newton Raphson Method.
PENERAPAN METODE DE NOVO PROGRAMMING DALAM PERENCANAAN PRODUKSI STICK KENTANG PADA UKM DELIMA BANDARA DI KAB. PADANG PARIAMAN Vania Amelja; Helma Helma
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15058

Abstract

This research is an applied research conducted aimed at determining how much potato stik products should be produced by UKM Delima Bandara. The De Novo Programming method is used to plan the production of potato sticks in order to generate maximum profits. The data used are primary data, namely data, demand data, raw material availability data, production cost data, and sales price data in 2022. Based on the results of production calculation by rill, UKM Delima Bandara obtained a profit for a years of Rp. 400.626.000, while the profit of the industry if its production planning using the method of De Novo Programming gains a profit of Rs. 410,860,000 in one year. Therefore, with the application of the De Novo Programming method, UKM Delima Bandara can plan production and save use raw materials so as to obtain better profit generation planning with the amount of production of original potato stiks as much as 1.476 kg, cheese potato stiks as much as 1.278 kg, lime leaf potato stiks as much as 1.269 kg, onion potato stiks as much as 1.398 kg, and balado potato stiks as much as 1.237 kg.
Prediksi Penyakit Diabetes Dengan Naive Bayes Yuni Wardana; Devni Prima Sari
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.15070

Abstract

Diabetes is one of the top ranked diseases for non-communicable diseases which is top cause of death worldwide. Every year 442 million people worldwide have diabetes and 1.6 million people die due to diabetes. With increasing cases of diabetes every year, this detection may need to be done before diabetes occurs. So a research was conducted on diabetes prediction using the Naïve Bayes method. According to the Naïve Bayes model, people with diabetes have a 28% chance of developing diabetes and a 72% chance of not having diabetes. And this research achieved 94% accuracy, 95% precision, and 98% recall.
Peramalan Hasil Produksi Padi di Kabupaten Solok menggunakan Metode Triple Exponential Smothing Tipe Brown Ridho Kardinal; Yusmet Rizal
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.14331

Abstract

Rice is the main food crop which consumes almost the entire population in Solok Regency. The rise and fall of rice production in Solok Regency is caused by the increasingly limited area of rice fields which results in changing the function of paddy fields into settlements or housing. The purpose of this research is to find out the brown type triple exponential smoothing model and to predict rice production in Solok Regency in 2004-2021. Estimates of rice production for the next 5 years show a decline. The forecasting model is:. The result of forecasting rice production for 2004-2021 in tons are 314119,49, 289788,96, 261426,70, 229032,73 and 192607,04.
Optimasi Perencanaan Produksi Usaha Keripik Sanjai Rina Menggunakan Pendekatan De Novo Programming Bella Oktavia; Rara Sandhy Winanda
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.14976

Abstract

One important part of industry is production planning. Production planning is a strategy to determine how many products to produce and how many resources are needed to make these products. By using the De Novo Programming approach, this research aims to determine the right production planning in the Business of Keripik Sanjai Rina so that the maximum profit is obtained. The De Novo Programming approach can determine the best combination of output and proposed use of resources based on the available budget. This approach can be solved using the simplex method. The results showed that the optimal number of products and the amount of raw material purchases were obtained so that the profit obtained by the Business of Keripik Sanjai Rina increased by 35%.
Analisis Regresi dengan Variabel Dummy pada Faktor Risiko Diabetes Mellitus Tipe 2 Putri Diana; Dewi Murni
Journal of Mathematics UNP Vol 8, No 3 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i3.14980

Abstract

Diabetes Mellitus is a metabolic disorder that occurs when blood glucose levels exceed normal limits, that is 126 mg/dl. If high blood sugar levels are not controlled, this can lead to complications and even death. This study aims to create a multiple linear regression model and discover the factors that affect blood sugar that it raises the risk of diabetes mellitus. This research using secondary data obtained from the Dadok Tunggul Hitam Health Center. The samples used were 286 samples. Blood sugar level is the dependent variabel, and the independent variabels are age, abdominal circumference, body mass index, and gender. By using multiple linear regression analysis using one dummy variabel, obtaines models:Y’ = 0,000157 -0,000001 X1 - 0,000001 X3 + 0,000013 DThe model shows that with α=5%, the variable that significantly affect blood sugar are gender, age, and body mass index.

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