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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 131 Documents
Penanggulangan Kasus DPT Ganda Dengan Menggunakan Algoritme Quicksort Dan Priority Queue Wijayakusuma, I Gusti Ngurah Lanang
Jurnal Matematika Vol 9 No 2 (2019)
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.2019.v09.i02.p116

Abstract

Daftar Pemilih Tetap (DPT) ganda merupakan masalah klasik yang terus-menerus terjadi saat Negara Indonesia akan menyelenggarakan pemilihan umum, baik ditingkat kabupaten, propinsi, maupun nasional. Keadaan ini akan sangat berbahaya bagi kemajuan demokrasi di Indonesia karena adanya DPT ganda ini dapat mendeligitimasi hasil pemilihan umum yang telah dilaksanakan. Metode yang digunakan untuk mengembangkan filter DPT ganda adalah gabungan dari algoritme longest common suffix (LCS) sebagai mesin filter DPT, algoritme quicksort dan priority queue sebagai struktur data untuk menyimpan data DPT dan metode penyajian data DPT setelah proses filter. Data yang digunakan adalah data DPT provinsi Bali tahun 2019 yang didapatkan dari KPUD seluruh kabupaten di Bali. Prototipe awal filter DPT mampu untuk mengeliminasi data-data pemilih yang dicurigai ganda dengan tingkat kemiripan antar data adalah 95%. Tetapi masih dapat beberapa kesalahan dalam proses filter ini yang disebabkan oleh tidak lengkapnya data yaitu enam angka terakhir dari NIK diganti dengan tanda *, serta tahun lahir juga diganti dengan tanda *.
Memodelkan Ketergantungan dengan Kopula Sumarjaya, I Wayan
Jurnal Matematika Vol 3 No 1 (2013)
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.2013.v03.i01.p33

Abstract

Dalam statistika salah satu ukuran untuk melihat ketergantungan antara dua peubah adalah dengan menggunakan koefisien korelasi. Namun, dalam banyak aplikasi finansial terutama manajemen risiko finansial penggunaan korelasi kadang tidaklah tepat. Salah satu contoh kelemahan korelasi adalah ketidakmampuan korelasi untuk menangkap hubungan nonlinear antara dua peubah. Selain itu, sifat-sifat umum korelasi yang dikenal biasanya hanya berlaku pada distribusi eliptik. Untuk itu diperlukan suatu metode untuk mengeksplorasi struktur ketergantungan antarpeubah tersebut. Metode ini adalah kopula. Tujuan artikel ini adalah memberikan tutorial singkat tentang kopula dan estimasinya.
Pengembangan Lembar Kegiatan Siswa (LKS) Bangun Ruang Sisi Datar Berbasis PBL Sulistyani, Niluh
Jurnal Matematika Vol 6 No 1 (2016)
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.2016.v06.i01.p65

Abstract

Quality of learning mathematics is supported by the availability of qualified learning facilities for students, for example worksheet. This study aims to describe how to develop and produce student’s worksheet (LKS) of flat side space, based on Problem-Based Learning (PBL) which is valid and practical. This study is research and development which is held in SMP N 2 Pengasih, Yogyakarta using Thiagarajan development model. The result of study is obtained development process of LKS comprising defining phase, designing phase, developing phase that starts from expert validation, revision, readability test, product revision, field test, and ends with the disseminating phase. The result of expert validation shows that LKS is valid in very good category. LKS practically gets very good category from tehacher assessment. The result of students assessment shows that 43,75% students can use LKS in very good category and 56,25% students can use LKS in good category.
Data Mining Pada Faktor-Faktor Potensi Daerah di Kabupaten Sidoarjo Provinsi Jawa Timur Lestari, Trianingsih Eni; Permadi, Hendro; Susilowati, Sri
Jurnal Matematika Vol 10 No 2 (2020)
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.2020.v10.i02.p124

Abstract

Abstract: Sidoarjo is one of the districts located in East Java that has developed rapidly. The remarkable progress can be achieved due to several potentials had by its people, for instance, industries, trades, small and medium businesses. Therefore, this research aims to find out the information regarding dominating factors had by the Sidoarjo using data mining. The result shows that Keboansikep, Sawotratap, Tebel, Keboananom, Gedangan, Keboguyang, Ketajen, Sidomulyo, Terik, Ponokawan, Sedengan Mijen, and Barengkrajan villages are the most potential villages in Sidoarjo. Based on the classification method, it is found that the villages of Keboansikep, Sawotratap, Tebel, Keboananom, Gedangan, and Ketajen (Gedangan District) have local potential in the form of agricultural factors such as rice and secondary crops. All residences in Keboguyang Village (Jabon District) already have an IMB. Meanwhile, the villages of Sidomulyo, Terik, Ponokawan, Sedengan Mijen, and Barengkrajan (Krian District) have high early childhood education factors such as kindergarten students, kindergarten teachers, and kindergarten schools Keywords: Data Mining, Local Potential, Biplot analysis
Analisis Sensitivitas dalam Optimalisasi Keuntungan Produksi Busana dengan Metode Simpleks Shintya Dewi, A.A.Sri Desiana; Tastrawati, Ni Ketut Tari; Sari, Kartika
Jurnal Matematika Vol 4 No 2 (2014)
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.2014.v04.i02.p48

Abstract

The main goal of every company in business is the optimal profit. Challenges that often faced by companies in achieving maximum profit is the difficulty of combining every available resources of the company. The purpose of this study was to determine the maximum profit that can be obtained by Ls Garment using the simplex method and determine the impact of the changes that occur in the objective function coefficients and constants right side constraints to the optimal solution. Based on the results of the application method used, it was obtained maximum profit of Rp. 1.893.184,00 per day with the amount of Dress Payung, Celana Aladdin XL, Celana Aladdin XXL, Celana Aladdin ¾, Dress Kerut, and Daster Haji respectively are 34, 60, 68, 96, 26, and 26 pieces. Profit remain in optimal condition if the change of coefficients value at the objective function is less than or equal to the coefficient of the objective function at the initial model.
Analisis Stabilitas Model SIR (Susceptibles, Infected, Recovered) Pada Penyebaran Penyakit Demam Berdarah Dengue di Provinsi Maluku Leleury, Zeth Arthur; Lesnussa, Yopi Andry; Bension, Johan Bruiyf; Kakisina, Yulia S.
Jurnal Matematika Vol 7 No 2 (2017)
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.2017.v07.i02.p91

Abstract

Health is an investment to support economic development and has an important role in efforts to reduce poverty and improve the quality of human resources. One of the diseases that often become serious problem in health sector that is Dengue Hemorrhagic Fever (DHF). In Indonesia, many mosquitoes cause dangerous DHF such as Aedes aegypti, Aedes albopictus, Aedes africanus, anopheles and others. In this study, we analyzed and applied SIR (Susceptible, Infection, Recovered) mathematical models and their interpolation to determine whether a contagious disease (DHF) can become endemic or not. Therefore, in this study aimed to determine the a special form of model of SIR to analyze the spread of DHF in Maluku Province and the stability analysis of this model and also interpolating the data of DHF transmission in Maluku Province. Furthermore, it can be obtained the characteristics of equilibrium point of each sub population. Based on the research conducted it can be concluded that from the entire population of Maluku Province is 1.686.469 vulnerable people infected with DHF and endemic disease with the basic reproduction value is 3,44.
Penentuan Susu Formula Ideal untuk Bayi Menggunakan AHP di Wilayah Kota Mataram Switrayni, Ni Wayan; Aini, Qurratul; Irwansyah, ,
Jurnal Matematika Vol 6 No 2 (2016)
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.2016.v06.i02.p73

Abstract

This research aims to determine the ideal formula milk for infants aged 1-3 years in the Region of Mataram City of West Nusa Tenggara. Method of this research is inductive. This research used Analytical Hierarchy Process (AHP) to determine the ideal formula milk for infants aged 1-3 in Mataram City Region of  West Nusa Tenggara based on several criteria such as price, nutritional value, net of packaging, and flavors. The result of this research showed that Analytical Hierarchy Process (AHP) can be used as one of the methods of decision-making in determining the ideal formula milk for infants aged 1-3 in Mataram City Region based on the four criteria.
Beberapa Sifat dari Modul dan Gelanggang dengan Dimensi Goldie Berhingga (Suatu Kajian Pustaka) Kamal Amir, Amir
Jurnal Matematika Vol 1 No 2 (2011)
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.2011.v01.i02.p17

Abstract

Suatu modul M dikatakan mempunyai demensi Goldie berhingga jika modul tersebuttidak memuat suatu jumlahan langsung dari takberhingga banyak submodul-submodultaknol. Sedangkan, suatu gelanggang R dikatakan mempunyai dimensi Goldie kanan berhinggajika gelanggang tersebut mempunyai dimensi Goldie berhingga sebagai suatu modul kanan.Tulisan ini akan menyajikan beberapa sifat dari modul dan gelanggang yang mempunyai dimensiGoldie berhingga. Sifat-sifat tersebut bukanlah merupakan sifat-sifat yang baru. Namundemikian, tulisan ini akan menyajikan pembuktian dari sifat-sifat tersebut dengan cara yanglebih terperinci dan lengkap sehingga lebih mudah dimengerti, terutama bagi pembaca pemuladalam bidang aljabar.
Model Probabilistik Fuzzy Goal Programming Berdistribusi Pareto dengan Urutan Prioritas pada Permasalahan Produksi Kue Susanti, Eka; Dwipurwani, Oki; Sitepu, Robinson; Wulandari, .; Natasia, Liani
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.
MODEL SIKLUS BISNIS IS-LM DENGAN PERSAMAAN DIFERENSIAL TUNDAAN Tastrawati, Ni Ketut Tari
Jurnal Matematika Vol 2 No 1 (2012)
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.2012.v02.i01.p19

Abstract

Sistem dinamik dapat dikembangkan dalam berbagai bidang kehidupan.Seperti dalam bidang ekonomi, salah satu sistem dinamik dalam bidang iniadalah model siklus bisnis. Ada beberapa model siklus bisnis, diantaranya modelIS-LM. Dalam penelitian ini akan dianalisa model siklus bisnis IS-LM dengan parametertime delay. Perbedaan antara keputusan investasi dengan implementasinyamenganjurkan untuk merumuskan model siklus bisnis IS-LM yang baru, yang memperlihatkanbahwa dinamika model sangat bergantung pada parameter time delay(waktu persiapan periode investasi). Dalam penelitian ini akan digunakan teoremabifurkasi Hopf untuk memprediksi kejadian dari limit cycle untuk parameter timedelay, yang menggambarkan siklus dari model IS-LM.

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