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All Journal Media Statistika Jurnal Ilmu Dasar Jurnal Sains Dasar Journal of Mathematics Education and Application (JMEA) Edu Sains: Jurnal Pendidikan Sains dan Matematika JMPM: Jurnal Matematika dan Pendidikan Matematika BAREKENG: Jurnal Ilmu Matematika dan Terapan Journals of Ners Community Jurnal Matematika UNAND Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi JES-MAT (Jurnal Edukasi dan Sains Matematika) Pakem : Jurnal Pengabdian Kepada Masyarakat Research in the Mathematical and Natural Sciences Journal of Educational Sciences Jurnal Riset Mahasiswa Matematika Hexagon: Jurnal Ilmu dan Pendidikan Matematika Journal of Mathematics, Computation and Statistics (JMATHCOS)
Nurwan, Nurwan
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Improving students' problem-solving abilities by using geogebra learning media on three-dimensional material Ramadiana, Anastasya; Takaendengan, Bertu Rianto; Nurwan, Nurwan; Zakaria, Perry; Usman, Kartin; Yahya, Lailany
Edu Sains: Jurnal Pendidikan Sains & Matematika Vol 12, No 1 (2024): VOLUME 12 NOMOR 1 JUNI 2024
Publisher : IAIN Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23971/eds.v12i1.5802

Abstract

The COVID-19 pandemic has had an impact on the learning process in schools. For this reason, researchers observed learning at SMA Negeri 1 Gorontalo, it was found that students were still not optimal in solving mathematical problems, especially in formulating steps to solve problems. This research aims to improve students' problem-solving abilities by using GeoGebra on three-dimensional material. The research was carried out at SMA Negeri 1 Gorontalo in class XII IPA 5 from September to October of the 2022/2023 academic year with research subjects totaling 30 students. The research is Classroom Action Research (CAR) using the Kemmis and McTaggart model, which involves the stages of planning, action, observation, and reflection. Data was obtained from observation and written tests. Analysis of observation results was obtained by calculating scores for each aspect criterion observed both on the teacher observation sheet and the student observation sheet, while the written test was analyzed by referring to the minimum completeness criteria. The results of the research show that there is an increase in students' problem-solving abilities in three-dimensional material after taking action using the GeoGebra learning media.
Penjadwalan Mata Pelajaran Menggunakan Integer Nonlinear Programming Mile, Abdul Rasyid; Katili, Muhammad Rifai; Nurwan, Nurwan
Research in the Mathematical and Natural Sciences Vol. 1 No. 1 (2022): November 2021-April 2022
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.694 KB) | DOI: 10.55657/rmns.v1i1.2

Abstract

Timetabling is one of the problems faced by large numbers of institutions, including schools. In this paper, this timetabling problem is mathematically modeled using Integer Nonlinear Programming to optimize the result with the non-linear objective function or constraint function. The model was implemented to solve the timetabling problem in one of Madrasah Tsanawiyah Islamic junior high school in Gorontalo. The result effective solutions in the form of subject and instructor timetabling that overcome the obstacles are obtained. To better the timetabling, supplementary teachers are still required for some subjects.
Aplikasi Algoritma Floyd-Warshall untuk Mengoptimalkan Distribusi Listrik di PLN Kota Gorontalo Usman, Susanti; Wiranto, Ifan; Nurwan, Nurwan
Research in the Mathematical and Natural Sciences Vol. 1 No. 1 (2022): November 2021-April 2022
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.032 KB) | DOI: 10.55657/rmns.v1i1.24

Abstract

This research deals with the application of the Floyd-Warshall algorithm and Floyd-Warshall plus in the optimization of electricity distribution network routes in Gorontalo City. The route optimization begins by representing the power poles and cable lengths into a graph. The graph used is a weighted graph where the road (related to the length of the cable) is represented as a weighted side and the electric pole is represented as a point. This graph consists of a set of electric poles totalling 40 points and a set of roads (cable lengths) totalling 46 sides. The results showed that the shortest path of the electricity distribution network is and the minimum cable network length is 9,040 m.
Model Antrian Pelayanan Terhadap Nasabah Bank BRI Menggunakan Petri Net dan Aljabar Max Plus Nurdin, Sri Ayu; Yahya, Lailany; Hasan, Isran K; Nurwan, Nurwan
Research in the Mathematical and Natural Sciences Vol. 2 No. 2 (2023): May-October 2023
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55657/rmns.v2i2.106

Abstract

Petri net is one model representing transitions and places connected by arrows. Max Plus Algebra is an algebraic structure in which all sets of real numbers  are equipped with max (maximum) and (addition). This research created a Petri net model of the customer service system for Bank BRI and a Max Plus Algebra model related to time to minimize service time at Bank BRI. The result is periodic time or characteristic values and vector characteristics where the values and are . The value of this vector's characteristics becomes a periodic time, which only takes 2 days 3 hours during working hours to disburse money after the client's arrival.
Penerapan Petri Net Pada Layanan Antrian di SPBU Kota Gorontalo Barham, Siti Maryam; Yahya, Lailany; Payu, Muhammad Rezky Friesta; Nurwan, Nurwan
Research in the Mathematical and Natural Sciences Vol. 2 No. 2 (2023): May-October 2023
Publisher : Scimadly Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55657/rmns.v2i2.114

Abstract

This study aims to apply Petri Net for queuing services for gas stations in the city of Gorontalo. The subject that became the focus of the research was the Jalan Jendral Sudirman gas station. The results obtained in this application are 11 places and 11 transitions, a matrix representation of the model, and the convertibility tree model.
Nonpreemptive Goal Programing Method in Optimization Nurse Scheduling by Considering Education Level Utina, Fitriani; Yahya, Lailany; Nurwan, Nurwan
Jurnal ILMU DASAR Vol 22 No 2 (2021)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v22i2.16939

Abstract

Nurse scheduling is one of the problems that often arise in hospital management systems. Head of ICU room and nurse to cooperate in making good nurse scheduling for the creation of optimal service. In this paper, we study a hospital nurse schedule design by considering the level of nurse education and the provision of holidays. Nurses with undergraduate education (S1) Nurses become leaders on every shift and are accompanied by nurses with diploma education (D3). The scheduling model in this study using the nonpreemptive goal programming method and LINGO 11.0 software. The preparation of the schedule of nurses assigned to this method can optimize the need for efficient nurses per shift based on education level. The data in the research was obtained by collecting administrative data at Aloei Saboe Gorontalo hospital. The data used are the published schedule by the head of the ICU room. In making a nurse schedule, there are limitations to consider such ashospital regulation. The results of the study obtained an optimal solution in the form of meeting all the desired obstacles. Computational results shows that nurse scheduling using the nonpreemptive goal programming method and LINGO 11.0 software better than the schedule created manually. Every shift is a maximum of one leader with an undergraduate education (S1) background and accompanied by a nurse with a diploma education (D3) background. Keywords: scheduling, goal programming, nonpreemptive goal programming.
ANALISIS WAKTU PELAYANAN TEKNIK GANGGUAN LISTRIK OLEH PERUSAHAAN LISTRIK NEGARA (PLN) DENGAN METODE ALJABAR MAX PLUS DAN PETRI NET Yahya, Lailany; Nuha, Agusyarif Rezka; Sari, Lia Nanda; Nurwan, Nurwan
Jurnal Sains Dasar Vol 13, No 2 (2024): Oktober 2024
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v13i2.74503

Abstract

Penelitian ini menggabungkan konsep Aljabar Max Plus dan jaringan Petri Net untuk mengetahui waktu optimal dalam sistem pelayanan teknik gangguan listrik. Aljabar Max Plus digunakan untuk menganalisis dengan memperhitungkan waktu proses pelayanan teknik gangguan listrik dan untuk alur Petri Net digunakan untuk menggambarkan struktur sistem pelayanan teknik gangguan listrik. Dengan menggunakan kedua metode ini, dapat mengoptimalkan alur kerja dan meningkatkan efisiensi pelayanan. Dari hasil analisis alur Petri Net pelayanan teknik gangguan listrik yang telah dibuat diperoleh bahwa Petri Netselalu Liveness dan tidak pernah deadlocks. Hasil analisis dan simulasi model Aljabar Max Plus diperoleh lamanya waktu proses pelayanan teknik gangguan listrik melalui contact center 123 sampai selesai membutuhkan waktu 40 menit 59 detik. Untuk Pelayanan teknik gangguan listrik dengan datang langsung ke kantor sampai selesai membutuhkan waktu 44 menit 26 detik dan untuk  Pelayanan teknik gangguan listrik melalui PLN mobile sampai selesai membutuhkan waktu 39 menit 30 detik.
Penerapan Hybrid Metode ARFIMA-ANN Menggunakan Algoritma Backpropagation pada Peramalan Indeks Harga Saham Gabungan Buhungo, Rayhanul Jannah; Hasan, Isran K; Nurwan, Nurwan
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Volume 12 Issue 2 December 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v12i2.28474

Abstract

The Composite Stock Price Index (IHSG) is a of the key indicator a country uses to assess its economic condition. The fluctuating movements of stock prices create uncertainly in the stock market, complicating decision-making for investors and government entities. Therefore, there is a need for a method that can forecast the Composite Stock Price Index to monitor such fluctuations. The objective of this study is to model the Composite Stock Price Index Utilizing a hybrid method and to assess the accuracy of this hybrid approach. The hybrid method employed is the Autoregressive Fractionally Integrated Moving Average (ARFIMA)-Artificial Neural Network (ANN). The results of this study show that the best ARFIMA model is ARFIMA (1,d,1) with a differencing parameter of dR/S = 0,362. The ANN model’s optimal architecture obtained through the backpropagation algorithm is ANN (3,2,1). The accuracy of the hybrid ARFIMA-ANN model, measured by the Mean Absolute Percentange Error (MAPE), yielded of 1,0164%, lower than the MAPE value of 1,7326% for the standalone ARFIMA model. This suggests that the hybrid model improves forecasting accuracy and is the most efferctive model for predicting the IHSG. 
On The Rainbow Connection Of Middle Graph Of Firecracker Graphs (F_(n,4)) Rahim, Delvira Masita; Nurwan, Nurwan; Yahya, Nisky Imansyah; Wungguli, Djihad; Arsal, Armayani
JMEA : Journal of Mathematics Education and Application Vol 4, No 1 (2025): Februari
Publisher : JMEA : Journal of Mathematics Education and Application

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmea.v4i1.22686

Abstract

Coloring in graph theory includes various approaches, one of which is rainbow coloring which is closely related to the concept of rainbow connected numbers which refers to the least number of colors needed to color the edges in a graph so that every two vertices connected in a rainbow path have the same color and is denoted by rc(G). Rainbow coloring can be studied in several forms of graph development, one of which is the middle graph. All types of graphs, both simple and complex, can be represented as a middle graph. A middle graph is a graph whose vertices are obtained from the vertices and edges of graph G and is denoted by V (M(G)) = V (G)∪(G). Two points in a middle graph are considered adjacent if and only if they are adjacent edges in G or one of the points is adjacent to an edge of G. In this research, we discuss the number rc(G) on the middle graph of firecracker graph (F_(n,4))  with n ≥ 2. Based on the research results, we obtain the rainbow connected number theorem on the middle graph of firecrackers graph rc(M(F_(n,4))) = 3n + 2 for n ≥ 2.
Bilangan Terhubung Pelangi pada Graf Ferris Wheel (Fw_n) Lakisa, Narti; Nurwan, Nurwan; Nasib, Salmun K.; Yahya, Nisky Imansyah
JMPM: Jurnal Matematika dan Pendidikan Matematika Vol 7 No 1 (2022): March - August 2022
Publisher : Prodi Pendidikan Matematika Universitas Pesantren Tinggi Darul Ulum Jombang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26594/jmpm.v7i1.2337

Abstract

Pada penelitian ini didefinisikan graf baru yang dinamakan graf ferris wheel yang dinotasikan dengan Fw_n. Graf ferris wheel dengan 2n+1 titik dan 5n sisi dihasilkan dengan menggabungkan dua buah graf yaitu graf lingkaran dan graf roda dengan menambahkan sisi sebanyak 2n. Tujuan dari penelitian ini adalah menentukan bilangan terhubung pelangi pada graf ferris wheel dengan bilangan bulat positif n>=3 dengan langkah-langkah; menggambar graf ferris wheel, menentukan bilangan terhubung pelangi dan membuktikan teorema bilangan terhubung pelangi pada graf ferris wheel. Metode dalam penelitian ini adalah studi literatur. Hasilnya diperoleh bilangan terhubung pelangi pada graf ferris wheel yaitu rc(Fw_3 atau Fw_4)=2, rc(Fw_5 atau Fw_6)=3, rc(Fw_7 atau Fw_8)=4, rc(Fw_9 atau Fw_10)=5, dan rc(Fw_n)=j+6 jika n=3j+11, 3j+12, dan 3j+13 untuk j>=0
Co-Authors Abdulah, Siska Agusyarif Rezka Nuha Armayani Arsal Aryasandi, I Wayan Can Asriadi Asriadi Aswi, Aswi Awi, Awi Barham, Siti Maryam Bertu Rianto Takaendengan Bilondatu, Rosna Ningsih Buhungo, Rayhanul Jannah Cramb, Susanna Dewi Rahmawaty Isa Djafar, Fitria Djihad Wungguli Evi Hulukati Fatmawati, Ainun Franky Alfrits Oroh Harmain, Ismail Saputra R. Husain, Moh Rizal Ifan Wiranto Isa, Jefri N. Ismail, Sri Rahmawati Isran K Hasan Jusuf, Anryan K. Hasan, Isran K. Nasib, Salmun Kartin Usman Kobandaha, Putri Ekawaty Lailany Yahya Laiya, Gusti Hari Fajar Lakisa, Narti Macmud, Tedy Mile, Abdul Rasyid Muhammad Arif Tiro, Muhammad Arif Muhammad Rezky F. Payu NISKY IMANSYAH YAHYA Nteseo, Sutriany Nurdin, Sri Ayu Paudi, Rivka Perry Zakaria Rahim, Delvira Masita Ramadiana, Anastasya Rauf, Dewi Nur Angriani Rauf, Moh Dody Afandi Resmawan Resmawan Salmun K. Nasib Sari, Lia Nanda Sembiring, Rinawati Siti Zakiyah Stella Junus Sudarmin Sudarmin Sukarna Sukarna Sumarno Ismail Syamsu Qomar Badu Usali, Rahmayunda Usman, Susanti Utina, Fitriani Yamin Ismail Yanuari, Eka Dicky D Yuanita Syaiful