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All Journal Science and Technology Indonesia Jambura Journal of Mathematics EIGEN MATHEMATICS JOURNAL Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi FARABI: Jurnal Matematika dan Pendidikan Matematika Integra: Journal of Integrated Mathematics and Computer Science
Dina Eka Nurvazly, Dina Eka
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Physics

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Penerapan Model Geographically Weighted Logistic Regression dengan Fungsi Pembobot Adaptive Gaussian Kernel pada Data Kemiskinan Nurhasanah, Nunung; Widiarti, Widiarti; Nurvazly, Dina Eka; Usman, Mustofa
Jambura Journal of Mathematics Vol 6, No 2: August 2024
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjom.v6i2.26504

Abstract

Regression analysis is one statistical method used to determine the relationship between a dependent variable and one or more independent variables. Dependent variables that are categorical are analyzed using logistic regression analysis. Geographically Weighted Logistic Regression (GWLR) is a method that is a local version of logistic regression, where location factors are considered. This method assumes that the dependent variable data are distributed binomially. In this study, the GWLR method is used to determine the factors influencing the poverty percentage in West Java Province in 2022 using an adaptive Gaussian kernel weighting function. The variables used are per capita expenditure, average length of schooling, Gross Regional Domestic Product (GRDP) per capita, and population density. The results of this study indicate that the variables of per capita expenditure, Gross Regional Domestic Product (GRDP) per capita, and population density significantly influence the poverty percentage in West Java Province in 2022.
The Partition Dimension of Daisy Graphs and Its Barbell Asmiati; Rachmawati, Aulia Ajie; Nurvazly, Dina Eka; Hamzah, Nur
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.313-319

Abstract

The partition dimension of a graph is determined by minimum number of vertex partitions such that every vertex has different distances to the ordered partitions. A complete graph is very easy to determine its partition dimension because each vertex has the same distance to other vertices. However, what are the partition dimension if a complete graph is modified so that it becomes a daisy graph. In this paper, we discuss the partition dimension of daisy graphs. Next, we will also provide barbell graph operations on daisy graphs.
Pelabelan Graceful Graf Hasil Korona Bunga Mawar Khairunnisa, Elvi; Nurvazly, Dina Eka; Indah, Novi Permata
FARABI: Jurnal Matematika dan Pendidikan Matematika Vol 8 No 1 (2025): FARABI
Publisher : Program Studi Pendidikan Matematika FKIP UNIVA Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47662/farabi.v8i1.1109

Abstract

Terdapat banyak pelabelan graf yang telah dikembangkan, salah satunya adalah pelabelan graceful. Pelabelan graceful dari graf dengan E busur dan V simpul adalah pelabelan yang memenuhi fungsi injektif sedemikian sehingga label busur yang dihasilkan diperoleh dengan cara pada setiap busur berbeda secara berpasangan. Pada penelitian ini, kami membahas tentang pelabelan graceful graf hasil korona bunga mawar yaitu untuk dan untuk Graf bunga mawar dikenal sebagai graf tengah dari graf lingkaran. Misalkan adalah himpunan simpul dari graf lingkaran , . Graf bunga mawar dapat dibentuk dari graf lingkaran dengan simpul dan simpul terisolasi dan kemudian menghubungkan setiap dua titik dengan untuk dimana . memiliki simpul dengan derajat 2 dan simpul dengan derajat 4. Graf produk hasil korona bunga mawar yang dapat ditulis sebagai dibentuk oleh operasi korona pada graf bunga mawar dengan menambahkan r simpul daun pada setiap simpul.
Analysis of Mpox Dynamic Model with Reinfection and Treatment Chasanah, Siti Laelatul; Nurvazly, Dina Eka; Sandy, Ikhlas Pratama; Hasanah, Arvi
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Volume 13 Issue 2 August 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v13i2.32358

Abstract

This research aims to develop a mathematical model of monkeypox disease spread with reinfection and hospitalization. This model divided the human population into five sub-populations: susceptible, exposed, infectious, hospitalized, and recovered. On the other hand, the animal population is divided into three: susceptible, exposed, and infectious. The results of the model analysis show that the stability of the two equilibrium points, disease-free and endemic, is asymptotically stable when  and , respectively. A sensitivity analysis was conducted on the parameter of the rate at which infected individuals are hospitalized. Based on numerical simulations, a disease-free state has been achieved when more than 68.87% of infected individuals receive hospital treatment. Hospital treatment has a positive impact on efforts to reduce the number of infected individuals in the population. The more individuals who are hospitalized, the greater the number of individuals who are exposed, hospitalized, and recover will increase.
Locating Chromatic Number for Rose Graphs and Barbell Operation Sawitri, Riza; Amelia, Lidwina; Asmiati, Asmiati; Nurvazly, Dina Eka
Eigen Mathematics Journal Vol 8 No 2 (2025): December
Publisher : University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/emj.v8i2.315

Abstract

The locating chromatic number of a graph is the minimum color required for a locating coloring. This concept is a combination of partition dimension and vertex coloring of a graph. The purpose of this paper is to determine the locating chromatic number of the Rose graph and the barbell Rose graphs. The method used to obtain the locating chromatic number of a graph is by determining its upper and lower bounds. In this paper, the locating chromatic number of the Rose graphs and its barbell operation were obtained. The locating chromatic number of Rose graph ???? (????????) is 4 for ???? ∈ {3, 4} and 5 for ???? ≥ 5. Furthermore, for barbell Rose graphs, 4 for ???? = 3 and 5 for ???? ≥ 4
Products Distribution from Suppliers to Retailers in Bandarlampung City (Case Study: Retailers location in Teluk Betung) Salsabila, Annisa; Nikmah, Nadhir Rotun; Bakhtiananda, Rafif Syadid; Aswin, Micelle Yap; Nurvazly, Dina Eka
Integra: Journal of Integrated Mathematics and Computer Science Vol. 1 No. 1 (2024): March
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.2024116

Abstract

Traveling Salesman Problem(TSP) is a problem where a salesman visits cities, each city is connected, and there are weights to move between cities, thus forming a complete weighted graph. The objective of the TSP is to determine all city routes with the lowest total weight. Cheapest Insertion Heuristic (CIH), one of the algorithms to solve TSP. This algorithm provides different travel routes depending on the order of city elimination on the subtour in question. In this study, the CIH algorithm will be discussed to determine the shortest route for distribution of goods from suppliers to several retailers in the city of Bandarlampung, especially for 23 retailers whose locations in Teluk Betung sub-district. The result shows that the total distance travel from the supplier to the 23 retailers and then back to the supplier location is 34.84 km.
Application of GSTARMA Spatial-Temporal Model for Inflation Analysis in South Sulawesi Province Sari, Dede Ratna; Widiarti; Nurvazly, Dina Eka; Usman, Mustofa; Loves, Luvita
Integra: Journal of Integrated Mathematics and Computer Science Vol. 1 No. 3 (2024): November
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.20241322

Abstract

The Generalized Space-Time Autoregressive Moving Average (GSTARMA) model is a development of the time series model that can capture both spatial and temporal dynamics simultaneously. This study uses the GSTARMA model to analyze inflation data in five cities in South Sulawesi Province from January 2017 to October 2024. The GSTARMA model obtained is GSTARMA (1,0,1) with a cross-correlation normalization spatial weight matrix. The results of the analysis indicate a spatial influence between locations and temporal relationships in the inflation data.
Training for Understanding Mathematics Olympiad for Students and Teachers of SMAN 2 Kalianda Ansori, Muslim; Wamiliana, Wamiliana; Nurvazly, Dina Eka; Chasanah, Siti Laelatul
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 6 No. 1 (2025)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v6i1.192

Abstract

Untuk mencapai kesuksesan dalam kompetisi olimpiade matematika diperlukan bimbingan dan persiapan yang baik. Oleh karena itu, kegiatan pelatihan penguasaan dan pemahaman materi olimpiade matematika bagi siswa dan guru SMAN 2 Kalianda diinisiasi untuk memberikan dukungan kepada guru-guru matematika dan siswa di SMA tersebut. Metode yang digunakan yaitu melibatkan ceramah, tanya jawab, dan simulasi. Tujuan dari kegiatan ini adalah untuk menciptakan lingkungan pembelajaran yang lebih efektif di tingkat sekolah menengah atas, memotivasi siswa untuk aktif mengikuti pembinaan, dan membantu mereka memahami materi olimpiade matematika dengan lebih baik. Hasil yang diperoleh dari kegiatan ini yaitu pemahaman dan keterampilan guru-guru meningkat dalam membimbing siswa untuk menghadapi olimpiade matematika, terlihat dari hasil peningkatan nilai pada post-test siswa.
Co-Authors Amelia, Lidwina Asmiati Asmiati Asmiati Aswin, Micelle Yap Bakhtiananda, Rafif Syadid Hasanah, Arvi Ikhlas Pratama Sandy Indah, Novi Permata Khairunnisa, Elvi Loves, Luvita Muslim Ansori Mustofa Usman Nikmah, Nadhir Rotun Nunung Nurhasanah Nur Hamzah Rachmawati, Aulia Ajie SALSABILA, ANNISA Sari, Dede Ratna Sawitri, Riza Siti Laelatul Chasanah, Siti Laelatul Wamiliana Wamiliana Widiarti Widiarti Widiarti