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Unisda Journal of Mathematics and Computer Science (UJMC)

ujmc
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Published by Universitas Islam Darul Ulum

ISSN : 24603333 EISSN : 2579907X DOI : -

Core Subject : Science, Education,

Computer Science & IT Education Mathematics

Unisda Journal of Mathematics and Computational Science (UJMC) is a research journal published by Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan with the scope of pure mathematics, applied science, education, statistics

Arjuna Subject : -

Articles 129 Documents

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METODE ADI (ALTERNATING DIRECT IMPLICIT) PADA PENYELESAIAN MODEL ALIRAN AIR TANAH Mohammad Syaiful Pradana; Lutvia Muniroh
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 2 No 1 (2016): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

The flow of water beneath the earth's surface flows through the pores like rocks and other porous media that can be flooded by water. In the soil, water flows due to the difference in hydraulic height that is the difference from ground water level. Groundwater movement, generally moving water with relatively slow flow can be modeled using Darcy law and mass conservation laws. The model is approximated numerically using the Finite Difference Method with the ADI (Alternating Direct Implicit) scheme. The ADI method has an advantage in the accuracy or accuracy of the results and the speed of completion. The ADI method can be applied to two or three dimensional systems to obtain the tridiagonal coefficient matrix.

IMPLEMENTASI COX PROPORTIONAL HAZARD MODEL PARAMETRIK PADA ANALISIS SURVIVAL (Studi Kasus: Mahasiswa Universitas Internasional Batam) Yayuk Setyaning Astuti; Dian Tresnawan
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 1 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

There are several factors that affect the study period of students at the International University of Batam (UIB) such as GPA, Parents Earnings, School Origin, and others. Therefore, it is necessary to do research to find out the factors that significantly affect the study period of students. The method used in this survival analysis is the cox proportional hazard regression parametric model that can explain the influence of independent factors in an event. From the process of survival analysis with regression cox proportional hazard parametric model obtained a significant factorinfluencing the study period of students of Faculty of Engineering, International University of Batam who entered in the year 2013 is GPA with model and obtained the highest probablities of students who graduated in the 8th semester with GPA> 3,723 is 0,73; and the highest probabilities of students who graduate more than 8 semesters with GPA> 3,723 has a probablity 0,916.

ANALISIS DISPARITAS SPASIAL MENGGUNAKAN DYNAMIC K-MEANS CLUSTER DAN LOCATION QUOTIENT PDRB KABUPATEN CILACAP TAHUN 2014 Rafendra Agustianda Putra; Muhammad Muhajir
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 1 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

In an effort to increase the growth an area, the government tried to advance sectors that can grow the economy in an area, one of them is gross regional domestic product (GDRP) data. A region that has an average areas with low GRDP but in the region there are areas that have very high GRDP can cause imbalance in the region. Imbalance regions is a common aspect in economic activity in a region, that is Cilacap regency. One model that is representative enough to measure the degree of imbalance of development among regions is Index Williamson (IW) and there are several methods to provide solutions in solving the problem of imbalance in Cilacap regency, among others Dynamic K-Means Clustering and Location Quotient (LQ). In this research, the results of the analysis showed IW Cilacap regency in 2014, there is imbalance but low imbalance, there is still imbalance between district due to high differences in income and sector productivity differences are striking every district in Cilacap regency. Dynamic K-Means Cluster analysis results shows the results of iteration 3 times and the number of clusters by 2 namely Cluster 1 (C1) and Cluster 2 (C2). Characteristics of C1 members advance in Sek_2, Sek_3, Sek_4, Sek_5, Sek_6, Sek_7, Sek_8, and Sek_9 while C2 members advance in Sek_1. C1 the number of members as many as 6 districts and C2 the number of members as many as 18 districts. And the result of LQ analysis shows that agriculture sector of Cilacap regency is the best potential to be developed.

PERHITUNGAN VALUE AT RISK (VaR) DENGAN SIMULASI MONTE CARLO (STUDI KASUS SAHAM PT. XL ACIATA.Tbk) Siti Alfiatur Rohmaniah
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 1 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

Value at Risk (VaR) can be simply defined as an estimate of the maximum potential loss under the normal market conditions at a specific time period and with the specific confidence level. For the calculation can be done by various methods including VaR parametric estimates. VaR is calculated by simulating the properties of the risk factors and the value of assets by raising the sequence of random asset prices at the T time, given the value of asset prices sample with time t where T> t.

SOLUSI POSITIF MODEL SIR Awawin Mustana Rohmah
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 1 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

Model that describes the epidemic spread of disease can spread in this area, one of which can be formed in the mathematical model of endemic SIR (susceptible, infected, and recovery). Based on the model, we can analysis existence and uniqueness, it shows that the system has solution and unique. Furthermore SIR indicated that the model has a positive solution. The final results obtained from this study is SIR model of having a uniqueand solution, as well as solutions that model is positive.

BENTUK PETRI NET DAN MODEL ALJABAR MAX PLUS PADA SISTEM PELAYANAN PASIEN RAWAT JALAN RUMAH SAKIT AL HUDA GENTENG, BANYUWANGI Siska Aprilia Hardiyanti; Ika Yuniawati; Aprilia Divi Yustita
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 2 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

The hospital is one of the service providers that can not be separated from the queue problem. Queues can occur if the number of patients who come more than the existing service facilities. The hospital services used in this study are outpatient services performed by BPJS and non BPJS patients. In addition, in this paper, a Petri net model of queuing outpatient service system system at Al Huda Genteng Banyuwangi Hospital,and max algebra model was added to estimate the length of waiting time of the patient.

REGRESI NONPARAMETRIK MENGGUNAKAN METODE ROBUST DAN CROSS-VALIDATION (STUDI KASUS MAHASISWA STIA MUHAMMADIYAH SELONG) Ratna Yuniarti; Widya Hartati
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 2 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

This paper is about comparison of estimation regression function between nonparametric regression kernel using Nadaraya Watson estimator with simple linearregression. In addition, a long-time case study was given in obtaining the first job. The data used are fresh graduate student, of Public Administration departement in STIA Muhammadiyah Selong graduate 2016. In this case we will see the relation between Cumulative Achievement Index (X) with long waiting time to get the job (Y). The software statistics with the help of software applications R. For the selection of the best model is by Cross-Validation. In this paper, given the theory and prove about crossvalidation method are described. And then, this paper describes the Robust method if there is outlier.

DIAGONALISASI MATRIKS HILBERT Randhi N Darmawan
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 2 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

The Hilbert matrix is a square matrix

ANALISIS KOMPONEN UTAMA UNTUK MENGETAHUI FAKTOR DOMINAN YANG MEMPENGARUHI ANGKA KEMISKINAN (Studi Kasus di Kabupaten Banyuwangi) Feby Indriana Yusuf; Heri Susanto
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 2 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

The poverty rate is an important component for improvement of Banyuwangi. The declining poverty rate is an indicator that Banyuwangi people have improved the welfare and better quality region. The dominant factors causing poverty need to be the main concern of Banyuwangi government to suppress and reduce poverty. Factor analysis is used as a method in determining the dominant factors that influence poverty rate in Banyuwangi. The variables analyzed are level of education ( V1), illiteracy (

PERBANDINGAN JUMLAH WISATAWAN ASING DAN DOMESTIK DI KABUPATEN BANYUMAS Seftina Diyah Miasary; Novita Eka Chandra
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 3 No 2 (2017): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

Tourism is part of the tax and income of a region. Based on data from the Central Bureau of Statistics Banyumas district, tourism in Banyumas district is very rapid. Banyumas district strategic location factor, many foreign and domestic tourists who visit to enjoy the tourist attractions and even the existing culinary. The study used data taken from the Central Bureau of Statistics Banyumas district in 2002 until 2014. After doing research on tourists in Banyumas district obtained that there are differences in the number of foreign and domestic tourists, and there is no difference in average length of stay foreign and domestic tourists in the district of Banyumas .

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