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All Journal Pelita Eksakta Journal of Mathematics UNP Rangkiang Mathematics Journal JNPM (Jurnal Nasional Pendidikan Matematika)

Muhammad Subhan

Universitas Negeri Padang

Author-ID : 2756558

Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Mathematics Physics Other

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Modifikasi Cadangan Premi Prospektif pada Asuransi Jiwa Seumur Hidup Joint Life Menggunakan Metode New Jersey Zulfadri Zulfadri; Arnellis Arnellis; Muhammad Subhan
Journal of Mathematics UNP Vol 4, No 4 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract – Basically the insurance company requires a reserve fund to pay compensation in the event of a claim. Not a few life insurance companies that incur losses beacuse can’t to pay compensation to participants of the insurance. These circumstances can be anticipated if the insurance company has the reserves that have been prepared and it accounted appropriately. One of the methods used to calculate the premium reserve is New Jersey. These method is derived from the formula of prospective reserves. The calculation of the value of reserves method using New Jersey begins by determining the cash value annuity, then calculate the net single premium, and annual net premium , proceed with the counting of net premium advanced and reserves end of the year-t. These method stated that value a reserve premium in the first year is zero, so that insurance companies can use the premium for the need insurance.Keywords – Premium Reserves, New Jersey Method, Prospective, Life Insurance, Joint Life

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.

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.

Metode Tipe Newton Bebas Turunan untuk Menentukan Akar Persamaan Tak Linier Engki Mai Putra; Muhammad Subhan; Yusmet Rizal
Journal of Mathematics UNP Vol 4, No 2 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract –Newton Method and Potra-Ptak Method are an iterative method which is used for solving nonlinear equation. Both of those method still have low order. Newton Method has second order convergence and Potra-Ptak Method has third order convergence. It make those method slow in getting roots approximation. Therefore, researcher modify both of those method use Taylor Series to increase the order of convergence, so we obtain Newton Type Derivative Free Method. So that, the purpose of this research is finding the roots of nonlinear equations using Derivative Free Newton Type Method, making the algorithm and determining the order of convergence. This research is theoretical research by reviewing relevant theories for solving nonlinear equation. The results of the research are Derivative Free Newton Type Method, algorithm of Derivative Free Newton Type Method, and this method has fifth order convergence. Keywords – Potra and Ptak Method, Taylor series, Derivative Free, Order of Convergence

Model Matematika Persediaan Barang karena Adanya Kerusakan dengan Tingkat Permintaan Eksponensial dan Partial Backlogging Iswarnedi Iswarnedi; Muhammad Subhan; Riry Sriningsih
Journal of Mathematics UNP Vol 6, No 2 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract – Inventory control by companies is needed to ensure of customers’s demand. Optimal order quantity is a model that uses for counting the optimal total of an item, which could be bought or produced to minimize the costs, both in terms of supplies and processing order purchase. The purpose of this research is to form the inventory model for deteriorating item with exponential demand rate. The method is descriptive method by analyzing the theories which are relevant to the problem. Finally, we get the model form and numerical example that is given to illustrate the model.Keywords– mathematical model, inventory, exponensialdemandrate,deterioration,partialbacklogging

Model Matematika Penanggulangan Pencemaran Udara Eri Ranyusa Putri; muhammad subhan
Journal of Mathematics UNP Vol 3, No 2 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract-Air pollution is a change in the composition of substances in the air from normal conditions. An air is said to be polluted if a certain amount of substance that is in the air for a long period of time exceeds its safe limit. Substances that most influence the occurrence of air pollution are carbon monoxide produced by vehicles. The purpose of this research is to form a mathematical model, analyze mathematical models that have been obtained, and interpret the results of the analysis of the mathematical model. This research is a basic research, which starts from creating variables, parameters, and assumptions. Mathematical models for air pollution control are obtained by nonlinear differential equation systems. The results of the model analysis obtained a fixed point that is not stable, so that we can do air pollution prevention by the number of trees must be a lot of carbon dioxide produced from the process of hydroxyl oxidation and carbon monoxide produced by existing vehicles.

Faktor-Faktor yang Menyebabkan Obesitas Berisiko pada Mahasiswa Matematika FMIPA UNP Menggunakan Analisis Faktor Siska Novita Sari; Helma Helma; Muhammad Subhan
Journal of Mathematics UNP Vol 6, No 1 (2021): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract - Obesity is a disorder characterized by the accumulation of fat tissue in the body excessively. Obesity can happen to anyone, including students. Many impacts of diseases that can attack is coronary heart disease, diabetes mellitus, hypertension and other dangerous diseases. Objectives for the review identify factors causing obesity. This research is done student of studies program mathematics Faculty of Mathematics and Science (FMIPA) Department State University of Padang (UNP), data was collected through questionnaires deplopment with respondents as many 32 people were processed using factor analyze. From the analyze of the data can be obtained five new factors.Keywords - Factor analyze, Obesity, the impact of obesity diseaseAbstract-Obesity is a disorder characterized by the accumulation of fat tissue in the body excessively. Obesity can happen to anyone, including students. Many impacts of diseases that can attack is coronary heart disease, diabetes mellitus, hypertension and other dangerous diseases. Objectives for the review identify factors causing obesity. This research is done student of studies program mathematics Faculty of Mathematics and Science (FMIPA) Department State University of Padang (UNP),data was collected through questionnaires deplopment with respondents as many 32 people were processed using factor analyze. From the analyze of the data can be obtained five new factors. Keywords- Factor analyze, Obesity, the impact of obesity disease

MODEL ECONOMIC ORDER QUANTITY (EOQ) DENGAN MEMENUHI BACKORDER DAN PERMINTAAN DENGAN PEMBAYARAN KREDIT 2 TINGKAT Bella Guivera Diandes; Muhammad Subhan
Journal of Mathematics UNP Vol 5, No 4 (2020): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Abstract— Generally, payment is made after the buyer receives the goods from the seller. At this time the development of the business world in Indonesia is increasingly rapid and various innovations have emerged, such as sellers will offer a delay in payments to buyers to complete transactions. This also applies to buyers to apply trade credit to their customers as a tool to attract customer interest to increase demand. Thus this paper will discuss the effect of a two-tier trade credit, on the optimal order quantity of an economical retailer with permitted shortages of goods. And assume the buyer demand function increases over time. The purpose of this inventory model is to maximize profits. With this, we model it in mathematical form. We can see the effect of the parameters on the decision variable of fulfilling the backorder and two-level credit payments.Keywords—EOQ, Backorder, Two-level trade credit.

Co-Authors Anjely Aunaya Alfatihah Arnellis Arnellis Bella Guivera Diandes Bella Guivera Diandes Defri Ahmad Defri Ahmad Desi Triana Putri Dewi Murni Dina Fitria Dini Kamala Sari Engki Mai Putra Eri Ranyusa Putri Esty Wahyuni Hana Fadhila Helma Helma Ingrit Ridha Rahayu isra miati Iswarnedi Iswarnedi Khairunisa Khairunisa Laksono Trisnantoro Lani Widia Putri Latifah Hanum Maharani Safitri Maulana, Heru Maulani Meutia Rani Media Rosha Mei Dina Rahmi Meiky Riani Meira Parma Dewi Minora Longgom Nasution Nadia Wulandari Nadia Wulandari Nilam Purnama Sari Nurma Yenni Peni Erawati putri karimah rahma widia Riry Sriningsih rizqa hariq hazana Ronal Rifandi Saddam Al Aziz Sarah Hardiana SHELLA RIZKY AMALIA Siska Novita Sari Siti Aminah suci wulandari Suherman Suherman Tasya Salsabilla Harista Taufik Iqbal Taufik Iqbal Vhinasy Andari Wanari Intan Dwi Putri Wella Kurnia Yoga Aprila Yuco Alsbaldo Yulyanti Harisman Yusmet Rizal Yusmet Rizal Zulfadri Zulfadri

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