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INDONESIA
E-Jurnal Matematika
Published by Universitas Udayana
ISSN : 23031751     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
E-Jurnal Matematika merupakan salah satu jurnal elektronik yang ada di Universitas Udayana, sebagai media komunikasi antar peminat di bidang ilmu matematika dan terapannya, seperti statistika, matematika finansial, pengajaran matematika dan terapan matematika dibidang ilmu lainnya. Jurnal ini lahir sebagai salah satu bentuk nyata peran serta jurusan Matematika FMIPA UNUD guna mendukung percepatan tercapainya target mutu UNUD, selain itu jurnal ini terbit didorong oleh surat edaran Dirjen DIKTI tentang syarat publikasi karya ilmiah bagi program Sarjana di Jurnal Ilmiah. E-jurnal Matematika juga menerima hasil-hasil penelitian yang tidak secara langsung berkaitan dengan tugas akhir mahasiswa meliputi penelitian atau artikel yang merupakan kajian keilmuan.
Arjuna Subject : -
Articles 9 Documents
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Search results for , issue "Vol 11 No 4 (2022)" : 9 Documents clear
PENGARUH KUALITAS, HARGA, DAN CITRA PRODUK TERHADAP KEPUASAN DAN LOYALITAS REMAJA PENGGUNA EMINA DI BALI KADEK ANDRIANI DWI PRATIWI; G.K. GANDHIADI; NI LUH PUTU SUCIPTAWATI
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p385

Abstract

Customer satisfaction in using cosmetic products is influenced by many factors. Emina Cosmetics is one of the local cosmetic products that is well known to the public because the products produced are safe and reliable so that it can create customer satisfaction and affect customer loyalty to continue using these cosmetic products. The purpose of this study was to determine the effect of quality, price, and product image on satisfaction and loyalty of Emina cosmetic users. This study uses a variant-based structural equation model (PLS-SEM). The latent variable in this study is customer satisfaction which is explained by product quality, price, and product image as well as customer loyalty. Data were obtained from 120 female adolescent respondents in Bali Province in each district/city. Based on PLS-SEM, showed that the quality, price, and image of the product affected customer satisfaction by of 77,2%, and customer satisfaction affected customer loyalty in using Emina Cosmetic products by 42,5%.
PERSEPSI MASYARAKAT TERHADAP KINERJA PERANGKAT DESA MENGGUNAKAN PERSAMAAN STRUKTURAL I GEDE WIRA HADY SAPUTRA; G.K. GANDHIADI; EKA N. KENCANA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p386

Abstract

The purpose of this research is to determine the factors that influence the perception of rural communities on the performance of the village apparatus in Sawan District, Buleleng, Bali. The method used in this research is partial least square-structural equations modeling (PLS-SEM) method. This research was conducted in 14 villages in Sawan District, Buleleng, Bali within the research period from August to October 2021. Data was obtained through a questionnaire based on the responses of the village community in Sawan District as respondents to the performance of village officials. The number of respondents who responded to the questionnaire in this research is 134 respondents. The results of this research indicate that the village government function, village development function, and village community empowerment function have a significant effect on the performance of the village apparatus, while the village community development function has no significant effect on the performance of the village apparatus.
PERHITUNGAN PROFIT TESTING MELALUI PENDEKATAN STOKASTIK PADA ASURANSI UNIT LINK ULFA DIANITA; I NYOMAN WIDANA; KETUT JAYANEGARA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p387

Abstract

Unit-linked is one of the Insurance Products Associated with Investments. The person who purchase must pay a premium and will get investment return and a death benefits in the event of death during the policy term. So that it is important for companies to calculate cash flow which is in unit link is called profit testing. The purpose of this study is to calculate the profit testing of unit-linked insurance companies through a stochastic approach by considering the calculation of policy value. The calculation of profit testing in this study was carried out through a stochastic approach to the lognormal model. The results of this study are the calculation of profit testing on a policy issued to a life aged 25, 35, 45, and 55 produce a profitable Net Present Value. However, the profits decrease with increasing age of the insured. The results of the calculation also show that the reserve value is can handle higher risk than quantile reserve.
ESTIMASI VOLATILITAS STOKASTIK CRYPTOCURRENCY BITCOIN MENGGUNAKAN MODEL HESTON-MILSTEIN NI PUTU WIDYA ISWARI DEWI; KOMANG DHARMAWAN; I WAYAN SUMARJAYA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p383

Abstract

Volatility is a quantity that measures how far a stock or cryptocurrency price moves in a certain period. To measure volatility properly, it can be done by using volatility modeling. The stochastic volatility model is one of the models used to predict volatility in a time series data, one of the stochastic volatility model is the Heston model. There are two schemes for estimating volatility using the Heston model, namely the Euler scheme and the Milstein scheme. The purpose of this study is to compare the estimation results of Bitcoin volatility with the two schemes. In using the Heston model, several parameters such as , , dan are needed. This parameter is calculated using the maximum likelihood estimation method. The results of the calculation of these parameters, respectively, are = 29.9996, =0.1464, and =2.1164. With the help of these three parameters, volatility estimation is generated. In this study, the Milstein scheme produces a lower volatility value than the Euler scheme.
MEMODELKAN PROFITABILITAS BANK BPD DI INDONESIA I WAYAN RIAN PRATAMA; NI LUH PUTU SUCIPTAWATI; MADE SUSILAWATI
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p384

Abstract

Bank in general have a function to move economy of a country, so they required to be in good physical condition in order to execute their purposes directly. The value of bank performance and soundness level can be measured using several ratios, one of which is net interest margin (NIM). NIM in Indonesia’s Bank until 2019 is the highest among ASEAN countries. The purpose of the research is modeling also determining the significant factors that affect the profitability of Bank for Regional Development (BPD) in Indonesia. The results show that the chosen model to model the open unemployment rate in Indonesia is a panel data model with the effect of time with of 32.47% and significant affect by BOPO.
PENDEKATAN REGRESI LOGISTIK BAYES PADA PEMODELAN PERILAKU IBU TERHADAP KEBERSIHAN MULUT ANAK BALITA KASTIN DWILEN PONG SUMAE; I GUSTI AYU MADE SRINADI; I WAYAN SUMARJAYA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p388

Abstract

Human behavior is a set of behaviors that humans have that are influenced by customs, value, ethics, attitudes, emotion, power, persuasion, and/or genetics. Oral hygiene is a form of dental hygiene. Toddler often suffer from oral and dental problems such as tooth decay or cavities. Hence, parental behavior towards the oral hygiene of toddler is urgently needed. This study aims to determine the factors that significantly influence maternal behavior on oral hygiene in toddler and to obtain a model of maternal behavior using Bayesian logistic regression method. Bayesian method estimation is solved using Markov Chain Monte Carlo (MCMC) simulation. The results of this study indicate that the variables of knowledge and income have a significant impact on maternal behavior in maintaining oral hygiene in toddler.
PENGGUNAAN KREMATORIUM BAGI UMAT HINDU: SEBUAH IDENTIFIKASI KUANTITATIF EKA N. KENCANA; DIAN PRAMESTI DEWI; I KOMANG GDE SUKARSA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p389

Abstract

A crematorium is a special place for cremation of dead. In recent years, the Hindu community in Bali has become accustomed to use crematorium for doing ngaben rituals. This study aims to know the determinant of Balinese to do ngaben at crematorium. The population was all Hindu communities in Bali, with a sample of 120 Hindu families who have doing ngaben at the crematorium. These respondents were chosen by applying snow-ball sampling. To find the underlying determinant(s), explanatory factor analysis was used. Data for this study is collected by surveying the respondents using self-administered questionaire on January to March 2022. The results justify there are four factors determine Hindu community in Bali has become accustomed to use crematorium for ngaben. These factors are (a) the quality of the crematorium service as the organizer of ngaben ceremony, (b) conformity of cremation ceremony with conventional cremation, (c) the family's trust and the absence of objections from the traditional village; (d) and consideration of the economic dimension. These factors able to explain the determinant of Hindu balinese people conducted ngaben at crematorium as much as 63 percent.
PENYELESAIAN MASALAH TRANSSHIPMENT DENGAN METODE PERBAIKAN ASM DAN REVISED DISTRIBUTION ANNISAA’ FEBRIANTI; NI KETUT TARI TASTRAWATI; KARTIKA SARI
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p390

Abstract

One example of transportation problems is the Shvan Art Shop, which is engaged in exporting 20 cm rattan bags. In distributing rattan bags, Shvan Art Shop does not directly send goods to their destination, but still through intermediaries. To overcome this problem, a transshipment model can be used to get a distribution line so that the outgoing costs are minimal. The purpose of this study is to compare distribution costs before applying the transshipment model with after applying the transshipment model using the ASM Repair and Revised Distribution methods. The results showed that the Revised Distribution method resulted in a distribution cost that was less than the Revised ASM method, which was Rp. 42,884,288.00.
FAKTOR KEPATUHAN MASYARAKAT KOTA DENPASAR PADA PROTOKOL KESEHATAN COVID-19 IA KOMANG MERIANI; I KOMANG GDE SUKARSA; EKA N KENCANA; KETUT JAYANEGARA
E-Jurnal Matematika Vol 11 No 4 (2022)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2022.v11.i04.p391

Abstract

Coronavirus disease (COVID-19) pandemic makes peoples around the world face many difficulties to do their daily activities in a normal way. To reduce the impacts of this deathly virus as well to suppress its spread, countries in the world, including Indonesia, have made protocols that regulate the activities of their citizens. This study aims to determine the group of factors that influence the compliance of Denpasar residents with the Covid-19 prevention health protocol. Population of this study is Denpasar residents aged 15 to 64 years. Applying proportional random sampling technique, 250 people who lived in four sub-districts in Denpasar were selected as respondents of the study. Questionnaire that has proven the validity of its items are distributed from March to April 2022. To determine group of factors associated with adherence to the implementation of COVID -19 protocol, explanatory factor analysis is utilized to group 24 initial items on questionnaire. The results demonstrate 7 of the 24 items did not have adequate criteria to be included as forming factors. The rests prove 6 factors behind the compliance of COVID-19 protocol, i.e. information seeking, people trust toward the protocol, infected history, caring for self and family health, comfortable and feels safe wearing a mask, and sanctions for protocol violations. These factors extracted the variance of original data around 77 percent.

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