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MILANG Journal of Mathematics and Its Applications
Published by Institut Pertanian Bogor
ISSN : -     EISSN : 29635233     DOI : https://doi.org/10.29244/milang.18.1
Core Subject : Education,
Mathematics
MILANG Journal of Mathematics and Its Applications, originally established in 2002 as the Journal of Mathematics and Its Applications (ISSN 1412-677X), transitioned to online publishing in 2018 and was renamed in 2022 to reflect its broadened scope. The name MILANG, a Sundanese word meaning “to count,” also stands for the journal’s key focus areas: Mathematics in Informatics, Life Sciences, Actuarial Science, Natural Sciences, and Graph Theory. This journal, published twice a year in June and December by the Department of Mathematics, IPB University, embraces an open access policy, making all articles freely available upon publication to support the global dissemination of innovative mathematical research.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 230 Documents
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PEMANTAUAN PERSAMAAN MODEL STRUKTURAL DALAM DATA ORDINAL SUHARJO, B.; MBAU, LA; ARDANA, N. K. K.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 1 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.1.21-36

Abstract

Structural equation modeling (SEM) is one of multivariate techniques  that can estimates a series of interrelated dependence relationships from a number of endogenous and exogenous variables, as well as latent (unobserved) variables simultaneously. To estimates their parameters, SEM based on structure covariance matrix, there are severals methods can be used as estimation methods, namely maximum likelihood (ML), weighted least squares (WLS), generalized least squares (GLS) and unweighted least squares (ULS). The purpose of this paper are to learn these methods in estimating SEM parameters and to compare their consistency, accuracy and sensitivity based on sample size and multinormality assumption of observed variables.  Using a fully crossed design, data were generated for 2 conditions of normality  and 5 different sample sizes. The result showed that when data are normally distributed, ML and GLS more consistent and accurate then the  other methods
PROSES FISI GELOMBANG SOLITER INTERFACIAL JAHARUDDIN, J.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 1 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.1.37-44

Abstract

Penurunan persamaan gerak bagi gelombang interfacial dilakukan dengan metode asimtotik. Domain fluida yang ditinjau berupa dasar yang tidak rata. Dalam penurunan persamaan gerak diasumsikan bahwa gelombang yang ditinjau mempunyai panjang  gelombang yang cukup panjang dan pengamatan dilakukan dalam waktu yang hingga. Persamaan gerak yang diperoleh berupa persamaan Korteweg-de Vries (KdV). Kajian bagi proses fisi gelombang soliter interfacial dilakukan dengan menggunakan persamaan KdV. Grafik yang menyatakan hubungan antara kedalaman fluida dengan perambatan beberapa soliter diberikan.
ANALISIS MODEL PENYAKIT MENULAR DENGAN PERIODE LATENT DAN RELAPSE KUSNANTO, A.; SIANTURI, P.; SUKAMTO, A.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 1 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.1.45-56

Abstract

The spread of infected diseases are usually caused by direct contact between those considered as susceptible and those  already infected. In this study, both the relapse and the latent factors were considered. The relapse factor is associated with a condition where the disease might be occurred again, while the latent related with the condition that the germ were being inactive in the body. We  applied this model to study the spread of the disease considering that the members of population in the exposed class were distributed on a manner of negative exponentially distribution or step function. The basic reproduction number was studied and applied to stability. All the models gave results that as the birth rate or remove rate was bigger then the proportion of susceptible population increase, while proportion of infected population and recovers decrease.  On the other hand, if the contact rate and recurrence to return increase then the susceptible population decrease, while the proportion of infected population and  recovers increase.
PENDUGAAN PARAMETER DERET WAKTU HIDDEN MARKOV DUA WAKTU SEBELUMNYA SETIAWATY, B.; NIKMAH, S. F.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 1 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.1.57-66

Abstract

Pendugaan parameter deret waktu Hidden Markov dua waktu sebelumnya dilakukan mengunakan Metode Maximum Likelihood dan pendugaan ulang menggunakan metode Expectation Maximization. Dari kajian ini diperoleh algoritma untuk menduga parameter model.
MODEL PERTUMBUHAN EKONOMI ANTAR KELOMPOK DAN SIMULASINYA HERLIANI, A. L.; NUGRAHANI, E. H.; LESMANA, D. C.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 1 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.1.67-79

Abstract

Domar’s economic growth model only considers capital as primary variable for production function. On the other hand, Solow’s economic growth model has added the labor as variable in the production function. The aim of this paper is to study distribution model of economic growth among groups in two regions proposed by Zhang (2005). This model considers human capital productivity as one of parameters of the production function. It has been shown that the dynamical system has a unique equilibrium. Therefore, the changes of human capital and propensity to save will influence total capital stocks and capital stocks in each group. Analytically, it is found that an increase in human capital and propensity to save will increase total capital stocks and capital stocks in each group.
CONVERGENCE OF MSE OF A UNIFORM KERNEL ESTIMATOR FOR INTENSITY OF A PERIODIC POISSON PROCESS WITH UNKNOWN PERIOD MANGKU, I W.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 2 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.2.1-10

Abstract

Convergence of MSE (Mean-Squared-Error) of a uniform kernel estimator for intensity of a periodic Poisson process with unknowm period is presented and proved. The result presented here is a special case of the one in [3]. The aim of this paper is to present an alternative and a relatively simpler proof of convergence for the MSE of the estimator compared to the one in [3]. This is a joint work with R. Helmers and R. Zitikis.
MODEL PENJADWALAN PERAWAT DI RUMAH SAKIT LILHAM, L.; AMAN, A.; HANUM, F.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 2 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.2.11-18

Abstract

Dalam penelitian ini dibahas model penjadwalan perawat di rumah sakit yang meminimumkan total deviasi (penyimpangan) hari kerja setiap perawat dengan mempertimbangkan kebutuhan jumlah perawat, shift malam, dan kebutuhan day off dari tiap-tiap perawat serta beberapa kendala teknis lain yang perlu diperhatikan oleh pihak manajemen rumah sakit. Model penjadwalan perawat ini diformulasikan dalam bentuk Integer Linear Programming dan diproses dengan menggunakan software LINGO 8.0.
PENYELESAIAN PERSAMAAN GERAK GELOMBANG TAKLINEAR DENGAN MENGGUNAKAN PENDEKATAN HOMOTOPI JAHARUDDIN, J.; FAHRURRAZI, F.; HANUM, F.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 2 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.2.19-26

Abstract

Metode homotopi merupakan suatu metode pendekatan analitik yang digunakan untuk menyelesaikan masalah taklinear. Metode homotopi tersebut digunakan untuk menyelesaikan masalah nilai batas yang muncul pada formulasi gelombang taklinear. Hasil yang diperoleh berupa rumus rekursif dengan pendekatan awal dimisalkan dalam bentuk gelombang sinusoidal. Selain itu diberikan pula grafik kebergantungan kecepatan phase gelombang terhadap kecuraman gelombang.
MODEL PERDAGANGAN ANTAR NEGARA BERDASARKAN AKUMULASI MODAL DAYAT, D.; NUGRAHANI, E. H.; BUDIARTI, R.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 2 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.2.27-36

Abstract

Model perdagangan antarnegara dikembangkan untuk mengkaji kemungkinan terjadinya pola perdagangan antarnegara dengan perbedaan preferensi, fungsi produksi, dan perpindahan modal internasional secara sempurna. Konsumsi dan tabungan diturunkan dari optimasi fungsi utilitas. Ditunjukkan bagaimana perbedaan preferensi dan fungsi produksi dapat berpengaruh pada arah perdagangan dalam sistem dinamik. Hasil analisis disimpulkan bahwa pada saat ekuilibrium sistem dinamik memiliki solusi tunggal. Hasil simulasi menunjukkan bahwa peningkatan tingkat teknologi dari suatu negara berpengaruh pada peningkatan cadangan modal keseluruhan, cadangan modal dan tingkat produksi negaratersebut. Peningkatan tingkat kecenderungan untuk menabung suatu negara mengakibatkan peningkatan cadangan modal dan pengurangan penggunaan modal asing atau peningkatan pemberian modal kepada negara asing
MODEL SKEDUL MIGRASI DAN APLIKASINYA DALAM PROYEKSI PENDUDUK MULTIREGIONAL MUSLIMAH, M.; SUMARNO, H.; KUSNANTO, A.
MILANG Journal of Mathematics and Its Applications Vol. 8 No. 2 (2009): Journal of Mathematics and Its Applications
Publisher : School of Data Science, Mathematics and Informatics, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmap.8.2.37-46

Abstract

Migration is one of demographic component beside fertility and mortality. The objective of thesis is to find model migration schedules and its application to multiregional population projection. Rogers et al. (1978) proposed one model migration schedules consist of 11 parameters. As the comparisson to that model this paper proposed another model used polinomial function. By divided Indonesia into two regions, Java-Bali and outer JavaBali, it would be found model migration schedules. The model be implemented to multiregional population projection based on SUPAS 2005 data. The result showed that the population growth continu to decreased and will reach -0,00066 in stable condition.

Page 14 of 23 | Total Record : 230

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