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Journal of Mathematics UNP

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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

7 8 9 10 11

Optimasi Hasil Produksi Konveksi dan Bordir Komputer pada CV. Jonifer Embroidery Menggunakan Metode Branch and Bound suci wulandari; muhammad subhan
Journal of Mathematics UNP Vol 4, No 3 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract — Every company generally has various problems in achieving business objectives. CV. Jonifer Embroidery has the limited machine resources and employee to achieve optimal profits. The purpose of this study is to form the model and the results of production on CV.Jonifer Embroidery using Branch and Bound method. Branch and Bound method is a method for solving linear optimization problems to obtain integer variables. On CV. Jonifer Embroidery optimal production obtained are 152 pieces of long-sleeved shirt, 192 pieces of short shirt, 213 shirts, 165 pieces of collared shirts, 92 jackets and 148 pieces of salempang with optimal profits of Rp.22.295.400. Keywords — Branch and Bound, Linear Programming, Optimization, Production.

Metode Euler-Milstein untuk Solusi Numerik Persamaan Diferensial Stokhastik Ornstein-Uhlenbeck Taufik Iqbal; Muhammad Subhan
Journal of Mathematics UNP Vol 5, No 3 (2020): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract —The Ornstein-Uhlenbeck.equation is a stochastic differential equation, this equation.is often used in the financial mathematical model. However, to find the solution the Ornstein-Uhlenbeck equation.is.difficult.to complete analytic so it can also be solved by looking for numerical solutions. To get a better numeric solution it is required a numeric. method by. looking at converged. The purpose of the study is to examine. the Euler-Milstein method formula for the solution of the Ornstein-Uhlenbeck equation, shows that numerical solution of Ornstein-Uhlenbeck equation that resulted by Euler-Milstein.method has strong convergence. to exact solutions and create an algorithm to find the solution of Ornstein-Uhlenbeck equation with the Euler-Milstein method. Keywords — stochastic.differential.Equations, ornstein-uhlenbeck equation, euler- milstein method

Implementasi Metode TOPSIS Fuzzy MADM dalam Seleksi Penerimaan Bidikmisi Mei Dina Rahmi; Muhammad Subhan
Journal of Mathematics UNP Vol 3, No 1 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract – There are so many candidates and criterias in the process of Bidikmisi scolarship selection, but the awardees are limited. Therefore, we need an accurate method to gain precise decision. This research used Technique for Oder Preference by Similarity to Ideal Solution (TOPSIS) Fuzzy Multi Additive Decision Making (FMADM) method to Bidikmisi scolarhip selection. Bidikmisi scolarship selection in this research there are five criterias were determined, they are: parents income, life cost, the status of the house ownership, the land area, and the building area. The rating of the criteria have been done subjectively and objectively. Subjectively, the rating is gain from experts opinion and objectively the rating is gain from the result of TOPSIS. The output are the participants preference value. Based on the result of these research, the preference value are more accurate therefore only a few candidates have the same value. So this research proves that the ranking process have been done more carefully.

Penentuan Premi Tunggal Asuransi Jiwa Dwiguna Unit Link dengan Garansi Minimum Menggunakan Metode Annual Ratchet dan Model Black Scholes SHELLA RIZKY AMALIA; Muhammad Subhan
Journal of Mathematics UNP Vol 6, No 3 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Unit-linked Endowment life insurance is a Endowment life insurance that combines the benefits of insurance and investment. In determining the unit-linked Endowment life insurance premium, it is necessary to have a minimum guarantee value to overcome the risk of loss for the policyholder. The method that can be used is the Annual Ratchet method and the Black Scholes Model. The data used in this study is the daily closing stock data of PT. Astra Internasional and Bank Indonesia interest rates in January 2020. Life probability data is based on the 2019 Mortality Table. The results obtained in this study are single premium net Endowment unit-linked life insurance using the Annual Ratchet method and the Black Scholes model. Based on the case study, it is concluded that the premium for unit-linked dual-purpose life insurance with the Black-Scholes model is greater than the premium for the annual ratchet method.

Kondisi Optimum Pengaturan Lampu Lalu Lintas Simpang DPRD dan Simpang Presiden Di Kota Padang Kefiano Fangelis; Defri Ahmad
Journal of Mathematics UNP Vol 5, No 4 (2020): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract — The high traffic density on roads in Padang has resulted in the accumulation of vehicles at intersections, especially the DPRD and the president intersection. Optimal traffic light settings are needed to reduce vehicle buildup at these intersections. Optimization is done by applying a graph coloring application. This optimization is seen from increasing the duration of green lights and decreasing the duration of red lights based on traffic density and road width. This study aims to determine the optimal traffic light settings at the DPRD intersection and the President's intersection of the city of Padang by using Graph Coloring.. This research is applied research,and data used are primary data obtained from direct observation. The completion of traffic light settings using graph coloring provides an alternative solution for the duration of the lights that is more effective than the data obtained from the observations. The results obtained are more optimal based on the level of effectiveness where the duration of the red light for the DPRD intersection and the president's intersection decreased by 9,27% and 39,02%, while the duration of the green light increased by 30,8% and 239,6%.Keywords — Coloring Graph, Weighted graph, Welch-Powell, Traffic Light.

Model Matematika Penyebaran Penyakit Kanker Serviks dengan Pengobatan Kemoterapi Siti Aminah; Muhammad Subhan
Journal of Mathematics UNP Vol 7, No 3 (2022): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Cervical cancer.is a disease that attacks the female.reproductive organs and often occurs in Indonesian women. Cervical cancer occurs because of a change from normal cervical cells to abnormal cervical cells and can turn into benign tumors and malignant tumors. The purpose of the reseach is to study the mathematical model of cervical cancer by chemotherapy treatment or to determine the effect of chemotherapy on cell growth in cervical cancer. The author performs a stability analysis on the fixed point model where there are two fixed points. The results of this study are that cervical cancer treatment with chemotherapy is effective enough to kill abnormal cells, although there are side effects, namely the killing of normal cells.

Algoritma Genetika pada Optimasi Persoalan Knapsack 0/1 Abdullah Husein; Dewi Murni; Meira Parma Dewi
Journal of Mathematics UNP Vol 6, No 2 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract – The problem of 0/1 Knapsack is an issue in the selection of objects from the set of objects that each object have a decision "selected" or "not selected". The decision to choose a object is prioritized by the weight and profit of these objects, for example, to maximize profits or minimize costs. The main issue of this problem, it take to many processes and time to find the optimum solution. Therefore, we need a method and a program to find aproximate solutions to this problem so that decisions can be made quickly with fixed gain maximum profit. The purpose of this study is to obtain an efficient way to finding the optimum solution of this problem. Optimization method that used in this research is genetic algorithm, while the program is made in Python programming language. Based on this research, it is known that the genetic algorithm is able to obtain the optimum solution knapsack problem in a fairly short time.Keywords – 0/1 knapsack problem, finding the optimal solution, genetic algorithm

Penerapan Teori Antrian pada Pelayanan Teller Bank BNI Kantor Cabang Pembantu Air Tawar Windy Septia Putri; Defri Ahmad
Journal of Mathematics UNP Vol 5, No 1 (2020): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract– Queuing is one of the problems that is often faced by public services, as happened at the BNI Sub-Branch Office Air Tawar. It is due to the large number of customers who come to get services. This paper discusses the resolution of the problem faced by obtaining a queuing model that is applied to bank tellers. Data collection is carried out for 5 days (Monday to Friday, at 09.00 - 12.00 Western Indonesian Time) and is done through interviews and direct observations at the teller section of the BNI Sub-Branch Office Air Tawar. Based on the results of the analysis by measuring the performance of the queuing system, it is found that the model applied is .The arrival time of the customer is Poisson distribution and the time of service to the costumer is exponential distribution. The general discipline used is first in first out (FIFO). The basic queuing model is the Multiple Channel Queuing System.Keywords– Queue Theory, Multiple Channel Queuing System.

Model Host-Vector Penyebaran Virus Zika Nadia Wulandari; Muhammad Subhan
Journal of Mathematics UNP Vol 5, No 3 (2020): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract— Zika is a disease caused by the bite of an infected Aedes mosquitoes, especially the Aedes aegypti mosquitoes. Besides being transmitted by mosquito bites, zika can also be transmitted by human sexual contact. The purpose is to determine the spread of zika virus through two populations and determine the paraeters that affect the distribution that are sensitive or affect the dynamic system. This research is a basic research, using descriptive methods. This method is done by analyzing theories related to the problem. Based on the results of the sensitivity analysis, it was found that the parameter affecting the basic reproductive value was the rate of mosquito bites and lifespan of vector. If the mosquito bite rate and the lifespan of the mosquito increase, then the basic reproductive value will also increase so that the zika virus will become epidemic. Keywords— Host-Vector Model, Zika, Sexual Transmission, Vector Transmission.

Peramalan Jumlah Produksi Kayu Manis di Sumatera Barat dengan Metode Pemulusan Eksponensial Tripel Tipe Brown Athifah Rahmi; Helma Helma; Riry Sriningsih
Journal of Mathematics UNP Vol 3, No 2 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract - Cassiavera in West Sumatra is part of the plantation sector, which provides largest export value to local revenue. However, in 2006-2015 the total of cassiavera’s production of West Sumatra has decreased fluctuation. Therefore it is necessary to estimate the amount of cassiavera production in future. The purpose of study was to determine total’s mode of cassiavera’s production in West Sumatra, Kab. Tanah Datar and Kab. Agam and know the results of the forecast production quantities of cassiavera. The data used is BPS data’s in Padang city 2006-2015. The method used is the method of Triple Exponential Smoothing Brown mode with parameter α. When setting parameter α then used MSE (Mean Square Error). The results of the forecast production total of cassiavera in three regions in 2016-2020 sequentially in tonnes is 29531.88, 31505.98, 33869.79, 36623.31 and 39766.54; 2660.16, 2334.63, 1999.18, 1653.79 and 1298.47; 4783.84, 4652.65, 4518.58, 4381.63 and 4241.81.

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Editorial Address Jl. Prof. dr. Hamka Air Tawar Barat Padang

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Defri Ahmad

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defri_math@fmipa.unp.ac.id

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+6281374333545

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defri_math@fmipa.unp.ac.id

Editorial Address
Jl. Prof. dr. Hamka Air Tawar Barat Padang

Location
Kota padang,

Sumatera barat

INDONESIA