Articles
Model Antrian Pada Layanan Teller Bank Nagari Cabang Pembantu Universitas Negeri Padang
Nadya Nadya;
Dony Permana
Journal of Mathematics UNP Vol 4, No 4 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v4i4.7919
Abstract – Queues are people or goods that are waiting in line to become served. This queue usually occurs because many customers want to be served while the number of services is very limited, so customers who come cannot be served immediately because the service is busy. Long queues or too long waiting times will certainly harm the Bank or customers. The purpose of this study is to obtain an appropriate queuing model based on the characteristics of customer arrivals and queuing system performance measures in the queuing model contained in the service system that is in the teller section of Bank Nagari Padang State University Branch. From the results of the study showed that the queue system of the general teller section of Bank Nagari Assistant of Padang State University Branch followed the model (M / M / 1) :( GD /∞ /∞), the level of service usefulness (ρ) was 0.9797, the opportunity for servants not serving 0 , 0203, the average number of customers in the queue (Lq) is 47 customers, the average time the number of customers in the queuing system (LS) is 48 customers, the average time customers can spend waiting in a queue (Wq) is 140 minutes, and the average time a customer can spend waiting in the system (Ws) is 143 minutes. Keywords: Queueing, QueueingModel, Bank Services
Matriks Peluang Transisi Fuzzy Time Series Markov Chain untuk Peramalan Kurs Riyal dengan Rupiah
iin aini fitri;
dony permana
Journal of Mathematics UNP Vol 4, No 3 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v4i3.7183
Abstract –Currency rates are one of important indicators in a contry’s ecomony. The value of a country’s currency always fluctuation in value against another country’s currency at any time. Data that used in this research are currency rates data between Riyal and Rupiah. It got from the official website of Bank Indonesia This research goal is to predict the currency rate between Riyal and Rupiah in the future with Markov Chain Fuzzy Time Series method. The result of this research based on kurs data processing in the form of transition opportunities between state are the exchange rate on the first day there is an interval 1, then the probability of the next day the exchange rate is in the interval 1 is 0.8000 and the probability of the next day the exchange rate is in the interval 2 is 0.2000, while being at intervals 3,4,5,6,7,8 is 0, and so onKeywords: Currency Rate, Forecasting, Fuzzy Time Series Markov Chain Method
Penentuan Harga Opsi Jual Amerika dengan Menggunakan Metode Gerak Brown Geometri
Yuli Andari Wulan;
Dony Permana
Journal of Mathematics UNP Vol 3, No 2 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v3i2.4684
Abstract– An option is a contract that gives the owner the right to buy or sell a number of instruments that relied upon the contract at a certain price and within the time period specified. There are two types of options that are known, namely call option and put option. Based on execution time, options can be divided into two types, namely the European type options and option types are American. The purpose of this research that is shaping the American Option pricing formula by using the method of geometric Brownian motion. The steps undertaken in this research is studying price movements of stocks, models, and interpret the options pricing models are selling America. Option price is affected by the movement of the stock price, strike price, volatility, the average rate of return (return) stock price, risk-free interest rate, and time to maturity..
Peramalan Penerimaan Pajak Negara Indonesia Tahun 2019 Menggunakan Metode Pemulusan Eksponensial Ganda Tipe Brown
Yatri Asri;
Dony Permana
Journal of Mathematics UNP Vol 4, No 2 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v4i2.6321
Abstract – Taxes are potential source of funds from the people and are used to build infrastructure and advance the economy of a country. The Calculation of estimated tax revenue targets that do not exactly have an effect on the various planned program activities. This research used the data of Indonesia tax revenue that obtained from Central Agency on Statistics Republic of Indonesia. This research aims to predict Indonesian tax revenue in 2019 using double exponential smoothing type Brown. The result of data processing obtained the forecast value of Indonesia tax revenue in 2019 using double exponential smoothing type Brown is IDR 1,734,847 billion. Keywords: Tax, Forecasting, Exponential Smoothing Type Brown Method
Optimasi Perencanaan Produksi Kerupuk Bawang Fajar Menggunakan Metode Goal Programming
Refina Rintani;
Arnellis Arnellis;
Dony Permana
Journal of Mathematics UNP Vol 3, No 1 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v3i1.4666
Abstract – This study discusses the optimization of production planning . Optimation is done by using goal programming method on the product of Kerupuk Bawang Fajar in Indarung Padang. Problems that occur in this business is less optimal implementation of onion cracker production. The production process is not through careful planning. So often the excess of raw materials. This research’s purpose is to know the model for production planning and to know the result of production planning optimization on Kerupuk Bawang Fajar by using goal programming method. The form of goal programming model is an extension of linear programming, it’s just there are deviasional variables on the function constraints that serve to accommodate the deviation of the completion of the goal to be achieved. The optimal production of Kerupuk Bawang Fajar is the original garlic cracker as much as 792 packs / day, spicy onion cracker as much as 130 packs / day, carrot flavor cracker as much as 151 packs / day, potato garlic crackers as much as 130 packs / day, and purple sweet potato crackers as much as 90 packs / day. With profit maximization of Rp. 12.167.291 and a minimization costs of Rp 3.373.378.
Faktor-Faktor Yang Mempengaruhi Tingkat Keparahan Korban Kecelakaan Lalu Lintas Di Kota Padang Menggunakan Analisis Regresi Logistik Ordinal
roza maylinda;
dony permana
Journal of Mathematics UNP Vol 4, No 3 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v4i3.7190
Abstract — Traffic accident are problem that requires serious treatment based of the large losses. The increase in traffic amount in Padang as the prove. This research goals are the factors that influence the severity of traffic accident victims. Dependent variables in the form of ordinal data are minor injuries, serious injuries, and death. The independent variables are the age of the victim, sex, type of accident, the role of the victim, and the type of vehicle. Ordinal logistic regression analysis will be used to analyze the independent variables that are corrected the severity of traffic accidents at Padang in 2018. Data obtained from the Lakalantas Padang Police Unit. Based on the results of the analysis obtained the age of victim, the type of accident, and the type of vehicle become a factor in the severity of traffic accident victims in Padang.Keywords — Traffic Accident, The Severity, Ordinal Logistic Regression
Optimalisasi Portofolio Saham LQ-45 menggunakan Model Indeks Tunggal dan Pengukuran Value at Risk dengan Variance Covariance
Yoga Perdana;
Dony Permana;
Riry Sriningsih
Journal of Mathematics UNP Vol 3, No 1 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v3i1.4670
Abstract – Investments are placing a current amount of funds with the aim of making a profit in the future. The problem faced by investors is to determine which assets should be selected to obtainmaximum profit and minimum losses. This research aims to determine the amount of proportion of funds invested into the optimal portfolio and to know the value of Value at Risk (VaR) on stocks that go into the optimal portfolio. Based on research on LQ-45 stock group found 15 stocks enter into the optimal portfolio from 45 shares of the company. Bank Tabungan Negara (Persero) Tbk. (BBTN) has proportion 18.01% as the largest propotion of funds. Based on the calculation of VaR in the optimal portfolio, obtained VaR value of 8,747,069, which means if investors invest funds in the portfolio of Rp 100,000,000.00 maximum losses to be suffered by investors with 95% confidence level will not exceed Rp 8,747,069.00.
Aplikasi Stepping Stone Method (SSM) dalam Pengoptimalan Biaya Transportasi Pengiriman Barang di PT. Selatanjaya Aditama Perkasa
Meidiani Sandra;
Dony Permana
Journal of Mathematics UNP Vol 3, No 2 (2018): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v3i2.4679
Abstract - A company distributors usually have constraint to delivery of the goods to the shop or the supermarket. These limitations include the delivered goods must be timely, demand for goods in the store can't be delivered in a single shipment or in the once a time. Therefore it needs a method of transportation to solve this problem. This research aims to know the completion of delivery of the goods on the transportation problem. The method used is the Least Cost Method is one method of transport that produce solutions of the initial shipping costs and Stepping Stone Method is one of the advanced method that can optimize the costs of delivery of the goods. The data used in this research is secondary data originating from PT. Selatanjaya Aditama Perkasa in March2018. By using both of these method retrieved 10,71% cost reduction. This cost is the optimum cost of delivery of the goods due to the cost of shipping goods to PT Selatanjaya Aditama Perkasa in March 2018 is Rp. 12,602,400.
Penentuan Harga Opsi dengan Model Black-Scholes Menggunakan Metode Beda Hingga Center Time Center Space (CTCS)
Welgi Okta Irawan;
Media Rosha;
Dony Permana
Journal of Mathematics UNP Vol 4, No 1 (2019): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG
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DOI: 10.24036/unpjomath.v4i1.6284
Abstract – Stock options is defined as a contract between two parties that the person who buy the contract have the right to buy or sell some stocks at a price and a certain period. To generate the profit, investor have to calculate the fear price from the options how the options price can be bought or sold. The Black-Scholes Model is one of model for calculating the option price. By a method of finite difference CTCS, investor can calculate option price which previously formed in the Black-Scholes Model. This research aims to establish the option pricing formula with Black-Scholes Models using finite difference methods CTCS and apply it. For the example, it is determined the option price Apple (AAPL) stocks from the American stock exchange (NASDAQ). It is obtained bought option price and sold option price at 28 July 2017 are $5.2558 and $ 0.9734. The price of bought option in the market is $5.67 (>$5.2558), so investor have to sell bought option. The price of sold option in the market is $1.32 (>$0.9734), so investor have to sell sold option. Keywords – Stock Option, Black-Sholes Model, Finite Difference Method, CTCS
Pengembangan Vidio Pembelajaran Matematika Menggunakan Model Flip Learning untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Peserta Didik
Hana Zafirah;
Elita Zusti Jamaan;
Suherman Suherman;
Dony Permana
Jurnal Basicedu Vol 7, No 1 (2023): February
Publisher : Universitas Pahlawan Tuanku Tambusai
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DOI: 10.31004/basicedu.v7i1.4582
Siswa harus diberi kesempatanyuntuk berpikir dan aktif memecahkan berbagai masalah yang diberikan. Penelitian ini didasari oleh rendahnya kemampuan pemecahan masalah matematis peserta didik SMK. Tujuan dari penelitian ini untuk menghasilkan vidio pembelajaran matematika menggunakan model Flip Learning. Proses penelitian ini dilaksanakan dengan model pengembangan Plomp. Penelitian ini dilakukan di SMK Negeri PP Padang Mengatas. Hasil penelitian menunjukkan bahwa video pembelajaran matematika yang dikembangkan menggunakan flipped learning tergolong sangat efektif dengan persentase 86,62% untuk RPP, dan 83,93%runtuk video pembelajaran, dan sangat praktisuasing-masing 87% danu86,85%. Sedangkan berdasarkan hasilrhasil uji soal tes kemampuan pemecahan masalah matematis diperolehu83,33% peserta didik memenuhuirkriteria keberhasilan tes kemampuan pemecahan masalah matematis > 80%, artinya vidio pembelajaran matematika menggunakan model flip learning sangat efektif terhadaprkemampuan pemecahan masalah matematis. Jadi, kemampuan pemecahan masalahumatematis peserta didik dapat ditingkatkan menggunakan video pembelajaran matematika menggunakan model flip learning.