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Computational Laboratory, Mathematics Department, Faculty of Mathematics and Natural Science, Udayana University UKM Building, UKM room no 8, Kampus Bukit Jimbaran Street, Badung-Bali.
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Jurnal Matematika
Published by Universitas Udayana
ISSN : 16931394     EISSN : 26550016     DOI : https://doi.org/10.24843/JMAT
Core Subject : Education,
Jurnal Matematika (p-ISSN: 1693-1394 |e-ISSN: 2655-0016| DOI: 10.24843/JMAT ) is an open access journal which publishes the scientific works for researchers. The articles of this journal are published every six months, that is on June and December.
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Articles 6 Documents
Search results for , issue "Vol 8 No 2 (2018)" : 6 Documents clear
Implementasi Model Production Routing Problem With Perishable Inventory (PRPPI) dengan Kebijakan Optimize Delivery-Optimized Selling pada Produksi dan Distribusi Tempe Novi Rustiana Dewi; Eka Susanti; Eddy Roflin; Tiara Bella Octalia; Rika Novita Rika Novita
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p102

Abstract

Industri tempe Ana adalah sebuah industri rumah tangga yang berada di Kota Palembang. Tempe produksi Ana dikemas dalam tiga kemasan yaitu tempe daun, tempe plastik kepingan dan tempe plastik batangan, pada makalah ini diterapkan model PRPPI untuk jenis kemasan tempe daun. Tempe adalah salah satu produk yang bersifat mudah rusak (perishable). Penelitian ini bertujuan untuk meminimalkan biaya produksi, mendapatkan rute dan jumlah produksi tempe optimal menggunakan model Production Routing Problem Perishable Inventory (PRPPI) dengan kebijakan inventory Optimized Delivery–Optimized Selling (OD-OS). Model linier PRPPI diselesaikan menggunakan software Lingo 17. Diperoleh biaya produksi optimal adalah Rp 84.701. Rute optimal pendistribusian adalah Depot ? pasar Perumnas ? pasar Sekip Ujung ? pasar Kebon Semai ? Depot. Jumlah produksi optimal adalah 27 potong.
Penggunaan Video Screencast O-Matic Pada Mata Kuliah Aljabar Abstrak Enny Listiawati
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p103

Abstract

In the millennial era an innovative and creative learning media is needed by utilizing technology that can improve the quality of student learning in abstract algebra lectures. One of them is by using Screencast O-Matic (SOM) software application. SOM is software that is generally used for making tutorial videos to explain or explain learning material.The purpose of this study was to determine the effectiveness of the use of SOM in abstract algebra learning in terms of student activity and completeness of student learning outcomes. The subjects of this study were the 5th semester students of the 5th semester Mathematics education program at STKIP Bangkalan PGRI who were participating in the Abstract Algebra course. 35 students. This type of research is quantitative descriptive, with the research instruments being the observation sheet of student activities and learning outcomes test questions. The results of this study are the use of Screencast O-matic software media in learning abstract algebra courses said to be effective based on indicators of effectiveness consisting of effective student activities and student learning outcomes completed in a classical manner.
Metoda Autoregressive untuk Peramalan Jangka Panjang Ria Faulina
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p104

Abstract

Changes in seasonal patterns in Indonesia are closely related to rainfall. Various forecasting techniques were developed to produce better accuracy. In this study ARIMA linear forecasting techniques were used. The data used is secondary data from BMKG Kalianget Station, Sumenep from January 2008 - December 2017 with a monthly rainfall research variable. To measure the accuracy of the forecast results used by RMSE.From the result of this study, ARIMA ([1,6],0,0)(0,1,1)12providing better accuracy than ARIMA (1,0,0)(0,1,1)12 for predicting the next 1 month or 12 months (a year ahead).
Mapping of Regencies/City in Bali Province Based on Education Indicators I.K.G. Sukarsa; G.K. Gandhiadi
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p100

Abstract

Education Development is one of the important elements of Human Resource Development (HR). In order for education development to be carried out properly, one of the important things is to know how to map the development of education in an area (for example the regencies in this study) based on predetermined education indicators. Based on the map, it can be seen that the education indicator is dominant in an area. With this information, the direction of education development in each region can be designed according to regional conditions by increasing indicators that are relatively lacking and maintaining a good indicator. This study aims to produce information in the form of education development maps in regencies/city in Bali Province based on education indicators so that they can be used as a reference for education development policies in each regencies. The resulting map will provide information on the condition of education indicators in a regencies. To get an overview of the map, Biplot Analysis is carried out on education indicator data. This analysis will provide a graph of the position of objects (regencies / city) and the relationships between variables (education indicators) simultaneously. The results of the analysis in graphical form with biplot shows that Gianyar Regency and Tabanan Regency are regencies that generally have close characteristics. This means that based on education indicators, the two regencies have similar indicators. The same thing is also seen in Karangasem and Bangli . While 5 (five) other regencies / city appear to have different indicator characteristics, the position of each regencies or city is far apart.
Model Deret Waktu Produksi Genteng Pejaten dalam Keterbatasan Sumber Daya I Gusti Ayu Made Srinadi; Desak Putu Eka Nilakusmawati
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p105

Abstract

The sample of this research was taken by purposive sampling technique, the villagers of Pejaten who are tile craftsmen. Data was collected through a questionnaire filled with 105 tile craftsmen. The tile materials of Pejaten Village include clay and rocky soil, clay is currently almost 95% from outside the village of Pejaten. The clay supplier villages include Bantas Village, Selemadeg, Meliling, Jadi, Gadungan, and Pandak. Most of the coconut fiber fuel is mostly imported from Jembrana Regency. Some laborers in tile production are family members of craftsmen and most use wage labor. This condition shows the scarcity of tile production resources in Pejaten Village. This study aims to find out how tile production in Pejaten village is in a condition of limited resources, and how the forecasting model of tile production is based on historical data from January 2013 to December 2017. The results of in-depth interviews with several tile craftsmen state that they will continue to produce tile along the roof tile demand still exists and is able to provide raw materials even though most are imported from outside the Pejaten Village. The amount of tile production shows a seasonal trend, and the time series model that is most suitable for the number of tile production is the SARIMA (1,1,5) (1,1,1) 12 model.
Model Probabilistik Fuzzy Goal Programming Berdistribusi Pareto dengan Urutan Prioritas pada Permasalahan Produksi Kue Eka Susanti; Oki Dwipurwani; Robinson Sitepu; . Wulandari; Liani Natasia
Jurnal Matematika Vol 8 No 2 (2018)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JMAT.2018.v08.i02.p101

Abstract

Yulis’s home industry is one of the Small and Medium Bussiness (UKM) on Palembang city. Yulis’s home industry produces bolu kukus, kue lapis, kue pare, kumbu kacang, srikaya, and wajik. Most of cakes that will be produced by Yuli is still based on the cake sale on the last day, so that the profit is still not optimal condition. This research aims to create preemptive priority additive approach to Fuzzy Goal Programming Probabilistic (PFGP) model with Pareto distribution for maximize profits, minimize the production of perishable cake, and maximize best sellers cake. The results are obtained maximum profit is Rp. 8.488.569 on a week , the amount of perishable cake is 1,295 pieces on a week, and optimal production for best seller cake as much as 8,489 pieces on a week.

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