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Department of Mathematics, 3rd Floor Faculty of Mathematics and Natural Sciences, Universitas Negeri Gorontalo Jl. Prof. Dr. Ing. B. J. Habibie, Tilongkabila, Kabupaten Bone Bolango 96119, Gorontalo, Indonesia
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Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi
Published by Universitas Negeri Gorontalo
ISSN : 20879393     EISSN : 27763706     DOI : -
Core Subject : Science, Education,
Computer Science & IT Mathematics
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi is a national journal intended as a communication forum for mathematicians and other scientists from many practitioners who use mathematics in the research. Euler disseminates new research results in all areas of mathematics and their applications. Besides research articles, the journal also receives survey papers that stimulate research in mathematics and its applications. The scope of the articles published in this journal deal with a broad range of mathematics topics, including: Mathematics Applied Mathematics Statistics and Probability Applied Statistics Mathematics Education Mathematics Learning Computational Mathematics Science and Technology
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 163 Documents
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Pengelompokan Jenis Penerimaan Pajak di Kota Makassar Menggunakan Fuzzy Clustering Irwan Irwan; Sahlan Sidjara; Asmelia Putri Aryati
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14225

Abstract

This research discusses grouping types of tax receipts in the City of Makassar with the method of Fuzzy C-Means (FCM). The data used are secondary data from the tax office in the form of the amount of the receipts of income tax, value-added tax, and land tax building each district in the year 2018. The discussion starts from the theory of fuzzy clustering, simulation, and the characteristics of the simulation results. In this study, the obtained number of clusters the optimum, namely the 7 clusters that have the potential for tax revenue is relatively high, namely at cluster seven consists only of the District Tamalanrea, and the lowest in the cluster a sixth consisting of the Kecamatan Tallo, Ujung Tanah, and Sangkarrang. After hashing on a cluster that is formed can be used to see the level of the welfare of the community in each district.
Pemodelan Pneumonia Berat Menggunakan Regresi Zero Inflated Negative Binomial di Gorontalo Novianita Achmad; Muhammad Rezky Friesta Payu; Yolanda Rahim
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.13990

Abstract

In certain cases, the response variable has an excess zero that causes overdispersion. Therefore, to overcome overdispersion because excess zero Zero-inflated negative binomial regression can be used. The purpose of this study is to apply Zero inflated negative binomial regression to model the case of severe pneumonia in Bone Bolango and on the city of Gorontalo. Based on the result of ZINB Regression, it was found that there are 3 (three) factors that are significant that is ASI, Vitamin A, and low birth weight.
Meningkatkan Kemampuan Pemecahan Masalah Matematika Siswa Melalui Media Pembelajaran Interaktif Articulate Storyline Pada Materi Peluang Fregita Habuke; Evi Hulukati; Khardiyawan A.Y Pauweni
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14496

Abstract

This study aims to improve students' mathematical problem-solving ability using articulate storyline interactive learning media in SMP N 2 Telaga Biru. This research is a Classroom Action Research. The subjects are grade VIII students consisting of 20 students. The data collection techniques include observation and test. The data analysis includes data analysis of teacher observations, student observations, and analysis of problem-solving ability test results. The research procedure includes action planning, implementation, observation, and reflection. This research was conducted in stages with two cycles, namely cycle I and cycle II. The tests and observations obtained from the two cycles showed that students' mathematical problem-solving ability increased in cycle II.
Analisis Biplot Robust dengan Metode Minimum Covariance Determinant dalam Mendeskripsikan Provinsi Sumatera Selatan Berdasarkan Karakteristik Angkatan Kerja Menganggur Dari Aspek Gender Oki Dwipurwani; Dian Cahyawati; Eka Susanti
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14070

Abstract

This study describes the unemployed workforce from the gender aspect in each district in South Sumatra Province (Sumsel), using secondary data taken from the Central Statistics Agency (BPS) in 2020. This study was analyzed using the statistical data description method, namely Robust Biplot Analysis, to data that contains outliers. The results obtained are the Biplot Robust graphic display which can explain the diversity of the data by more than 70%. The districts of Muara Enim, Lahat, Musi Banyuasin, Ogan Ilir, Prabumulih, Lubuk Lingau, and Palembang have the characteristics of the male Open Unemployment Rate (TPT) and the female TPT which is higher than the average for other districts. The districts of North Musi Rawas, Palembang, and Lubuk Lingau have the characteristics of high educated male and female unemployment. The districts/cities of Ogan Komering Ulu, Ogan Komering Ilir, and Musi Rawas Utara need attention because they have a higher percentage of unemployment in the desperate category than other districts, both male and female.
Analisis Gerak Partikel dalam Ruang Waktu Lengkung dengan Fungsi Green Yamin Ismail; Abas Kaluku
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14209

Abstract

Motion of particle in curved spacetime as generalization of flat space-time with metric gµʋ the motion in this article is scalar charge q, electric charge e,and particle mass m will produce field that can have the behavior as a radiation zone of electromagnetic wave, by applying Maxwell equation on Green function motion of particle is represented in form of acceleration that can be determined.
Karateristik Sifat Fisika dan Mekanika Papan Laminasi Kayu Sengon dan Kayu Bayur Febriana Tri Wulandari; Radjali Amin; Raehanayati Raehanayati
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.13961

Abstract

Currently, it is increasingly difficult to obtain large and quality sawn timber due to the diminishing supply of wood in natural forests. To overcome this problem, innovation is needed to utilize wood scrap waste as a board product. One form of innovation in the use of wood scrap as a board product is laminated boards. In this study, Sengon and Bayur woods were used which had strong grades III-IV and had specific gravity ranging from 0.29-0.70. Bayur and Sengon wood are suitable to be used as raw materials for laminated boards because they have a light density. The purpose of this research was to determine the physical and mechanical characteristics of laminated boards, the effect of Labur weight, wood species and their interactions. The method used in this study is an experimental method with a factorial completely randomized design (CRD). Characteristics of physical and mechanical properties of laminated boards of Sengon and clothes: density 0.412 gram/cm3; water content 12,459%; thick development 2.019%; thick shrinkage 3.183%; MoE 23031,922 kgf/cm²; MoR 357.208 kgf/cm². Laur weight, type of wood and their interactions have a significant effect on all physical and mechanical properties of Sengon and Bayur laminated boards. The interaction of pumpkin weight and wood species had no significant effect on the water content and MoR tests. Based on the wood strength class, Sengon and Bayur wood laminated boards are classified as class III which can be used as protected heavy construction materials.
Peningkatan Kemampuan Literasi Matematika Melalui Pendekatan Problem Based Learning Bermuatan Penilaian Portofolio Valeria Suryani Kurnila; Margaretha Badus; Eufrasia Jeramat; Gabariela Purnama Ningsi
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.13963

Abstract

Currently, the government is aggressively optimizing students' literacy skills, including mathematical literacy skills. Today's problem is that the dominant students still have low mathematical literacy skills. Therefore, one solution is to apply a Problem Based Learning (PBL) model based on portfolio assessment. This study aims to determine the difference between students' mathematical literacy skills taught using the PBL learning model about portfolios and students' mathematical literacy skills using the direct learning model. Quasi-experimentation is the type of research using the Posttest Only Control Group Design. The population of the study was the seventh-grade students of SMPN 2 Cibal, who found 96 people spread over 3 classes. Samples were taken from the population in a randomized manner so that 32 students of class VIIC were obtained as the experimental group and 32 students of class VIIA as the control group. Data was collected from description testing and also equipped with student portfolio assessment results. The results of data analysis showed that the literacy skills of students who were taught using the PBL learning model showed a better portfolio than the literacy skills of students who used the direct learning model.
Model Matematika Optimasi Multi-Objektif Penurunan Beban Limbah Biochemical Oxygen Demand pada Instalasi Pengolahan Air Limbah Shelly Sholatan Kamilah; Sunarsih Sunarsih; Titi Udjiani
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14077

Abstract

The increase in community activities causes the amount of wastewater to increase. This wastewater comes from industrial production processes and from the community activities which are domestic wastewater. Domestic wastewater must be treated before being discharged to water sources because it contains pathogenic organisms. The place for treating domestic wastewater is Wastewater Treatment Plant (WWTP). The main purpose of WWTP is to degrade the Biochemical Oxygen Demand (BOD) and pathogenic organisms. This study develops a multi-objective optimization mathematical model for reducing the BOD load in the WWTP. This optimization model has three objective functions, namely maximizing the BOD load that is treated in the pond minimizing the difference between the BOD reduction efficiency value in the WWTP with the reference efficiency value and minimizing the power used by the aerator. The simulation results show that the maximum BOD load that can be treated in facultative ponds I and II is 1,589.688 Kg/day while for facultative ponds III and IV is 1,727.158 Kg/day. The efficiency value of reducing BOD load is influenced by the residence time variable, where the efficiency value of reducing the BOD load for facultative ponds I and II by 54% while for facultative ponds III and IV by 57%. The power used by the aerator is influenced by the treated BOD load variable, the aerator power in facultative ponds I and II is 49.67775 Kwh while in facultative ponds III and IV it is 53.97369 Kwh.
Bilangan Terhubung Titik Pelangi Kuat Graf Octa-Chain (OCm) Nisky Imansyah Yahya; Karina Anselia Mamonto; Nurwan Nurwan; Lailany Yahya; Djihad Wungguli; La Ode Nashar
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.15177

Abstract

An Octa-Chain graph (OCm) is a graph formed by modifying the cycle graph C8 by adding an edge connecting the midpoints in C8. The minimum number of colors used to color the vertices in a graph so that every two vertices have a rainbow path is called the rainbow vertex-connected number denoted by rvc (G). While the minimum number of colors used to color the vertices in a graph so that every two vertices are always connected by a rainbow path is called a strong rainbow vertex connected number and is denoted by srvc (G). This study aims to determine the rainbow vertex-connected number (rvc) and the strong rainbow-vertex-connected number (srvc) in the Octa-Chain graph (OCm). The results obtained from this research are the rainbow vertex-connected number rvc (OCm)=2m and the strong rainbow-vertex-connected number srvc (OCm)=2m.
Aplikasi Geometric Brownian Motion dengan Jump Diffusion dalam Memprediksi Harga Saham Liquid Quality 45 Prilia Ditasari; Embay Rohaeti; Isti Kamila
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 10 Issue 1 June 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/euler.v10i1.14655

Abstract

At the beginning of 2021, stock LQ45 experienced a significant spike in stock prices, making the stock price difficult to predict and the profits obtained by investors uncertain. The purpose of this study is to predict the stock price of LQ45 using the Geometric Brownian Motion model with Jump Diffusion and determine investment by comparing the expected return and return of stock price prediction results. This study uses a Geometric Brownian Motion model with Jump Diffusion to predict stock prices because it can predict when stock prices experience price spikes and fluctuations. Based on the results of the study, of the 45 stocks listed on LQ45 stock, only nine stock companies were selected that had a normally distributed return whose stock price was predicted by applying the Geometric Brownian Motion model with jump-diffusion and each MAPE value obtained was in the very good category. There are six stock companies with investment decisions in the form of buying shares, including Ace Hardware Indonesia Tbk, Bank Central Asia Tbk, Charoen Pokphand Indonesia Tbk, Indofood CBP Sukses Makmur Tbk, Vale Indonesia Tbk and Indah Kiat Pulp Paper Tbk. Three stock companies with investment decisions in the form of selling shares including, Bank Rakyat Indonesia (Persero) Tbk, Jasa Marga (Persero) Tbk and Mitra Keluarga Karyasehat Tbk.

Page 5 of 17 | Total Record : 163

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