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Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA)
Published by Pusat Riset dan Inovasi Nasional
ISSN : 28289382     EISSN : 28289390     DOI : https://doi.org/10.55606/jurrimipa.v1i1
Core Subject : Education,
Mathematics
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam adalah jurnal yang ditujukan untuk publikasi artikel ilmiah yang diterbitkan oleh Pusat riset dan Inovasi Nasional, Universitas Sains dan Teknologi Komputer. Jurnal ini adalah jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam yang bersifat peer-review dan terbuka. Bidang kajian dalam jurnal ini termasuk sub rumpun Ilmu IPA, Ilmu Matematika, Ilmu Kebumian dan Angkasa. Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam menerima artikel dalam bahasa Inggris dan bahasa Indonesia dan diterbitkan 2 kali setahun: April dan Oktober.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 176 Documents
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Application Of Game Theory In Determining Optimum Marketing Strategy In Marketplace Intan Permata; Esther Sorta Mauli Nababan
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1336

Abstract

The trend of shopping in society is getting shifted, marked by the presence of the growing marketplaces and e-commerce. There are so many choices of marketplaces that can be easily accessed by the society. By the marketplaces vary, there would be many things to prepare by every marketplace to win the competition and always maintain the existence. Therefore, they must think and use the effective marketing strategy. The game theory is one of the ways that can be used to analyze the marketing strategy. The game theory is a mathematics model used in a conflict or competition among various interests that meet each other as competitors. Basically, the theory is a study of strategy interaction among the players to determine the best strategy and the obtained score. One of basic elements of the game theory is solving every case of the game theory where the pay-off matrix is shown in a game matrix table. The data of game between Shopee and Tokopedia obtained the optimum score which was 2.4443. Shopee and Bukalapak obtained the optimum score which was 6. Meanwhile, Tokopedia and Bukalapak obtained the optimum score which was 8.9925. In the Shopee, Tokopedia, and Bukalapak competition, the Nash equilibrium point is located at the point () with a pay off value (64,56,43), Shopee with a discount voucher strategy (), Tokopedia with a Product strategy (), and Bukalapak with a promotion strategy () which is the optimal strategy for each player.
Optimasi Biaya Pengendalian Persediaan Alat Suntik (Spuit) Dengan Metode Optimisasi Robust Menggunakan Aplikasi Python Di RSUD Dr. Pirngadi Rotua Ignasia Saragih; Tri Andri Hutapea
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1348

Abstract

Inventory control is very important for companies because without proper inventory control the company will experience problems in meeting consumer needs both in the form of goods and services produced by the company. RSUD Dr. Pirngadi is one of the companies that uses conventional methods to calculate the total cost of inventory so that the costs incurred both for ordering syringes and storage costs are still high, therefore it is necessary to control the inventory of syringes which aims to minimise inventory costs so that company goals can be achieved. In solving the problem of controlling inventory costs to minimise total inventory costs, namely using robust optimisation. Robust optimisation is an optimisation model that contains uncertainty data to obtain the right solution using linear program solving. The results of research at the RSUD Dr. Pirngadi obtained the total cost of inventory according to company policy for the use of 3 mL Terumo syringes is Rp.426,104,665 while the robust optimisation method is Rp.319,647,106 so it can be concluded that by applying the robust optimisation method to the company can save inventory costs of Rp.106,987,599 or 25%. Furthermore, the total inventory cost of using a 5 mL Terumo syringe according to company policy is Rp.208,402,454 while the robust optimisation method is Rp.166,608,139 so it can be concluded that by applying the robust optimisation method to the company can save inventory costs of Rp.41,794,315 or 20%.
Analisis Perbandingan Algoritma XGBoost dan Algoritma Random Forest Ensemble Learning pada Klasifikasi Keputusan Kredit Jan Melvin Ayu Soraya Dachi; Pardomuan Sitompul
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1470

Abstract

Pemberian kredit selalu memiliki risiko seperti kredit macet, sehingga pihak kreditur (bank) dituntut untuk lebih objektif dan akurat dalam mengevaluasi setiap permohonan kredit. Penelitian ini dilakukan guna menemukan algoritma mana yang paling akurat dalam memberikan suatu keputusan kredit, dengan melakukan perbandingan terhadap algoritma XGBoost dan algoritma Random Forest. Pada kedua algoritma digunakan data berukuran 10.000 dan 100.000 dengan 19 variabel yang relevan dalam pengambilan keputusan kartu kredit. Proses penelitian ini melibatkan pre-processing data, splitting data, training data, parameter tuning dengan Random Search, testing data, serta evaluasi model dengan confusion matrix. Hasil eksperimen menunjukkan bahwa kedua algoritma menghasilkan kinerja model yang cukup kompetitif, dimana XGBoost mampu mencapai 1.0 untuk semua metrik evaluasi baik pada data berukuran 10.000 maupun data berukuran 100.000. Random Forest sendiri berakurasi 0.998 untuk data berukuran 10.000 dan 0.999 untuk data berukuran 100.000. Akan tetapi, Random Forest hanya mampu mencapai F1-score sebesar 0.700 untuk data berukuran 10.000. Berdasarkan hasil yang diperoleh dalam penelitian ini, dapat disimpulkan bahwa kedua algoritma memiliki performa yang sangat baik dan akurat dalam mengklasifikasikan keputusan pada data kartu kredit. Namun, Random Forest kurang akurat bila digunakan pada data berukuran kecil yang tidak seimbang.
ANALISIS SISTEM ANTRIAN PADA PT. BANK SUSMUT KANTOR PUSAT MEDAN MENGGUNAKAN MODEL ANTRIAN MULTI CHANNEL SINGLE PHASE Okta Via Herawati Siahaan; Abil Mansyur
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1495

Abstract

Antrian adalah fenomena atau kejadian yang sering dijumpai dalam kehidupan sehari-hari. Antrian yang sangat panjang dapat merugikan pihak yang membutuhkan pelayanan jika tidak dilayani dengan cepat, karena banyaknya waktu yang digunakan terbuang selama menunggu giliran pelayanan. PT. Bank Sumut Kantor Pusat Medan merupakan salah satu bank daerah yang sumber dananya berasal dari simpanan masyarakat. Adapun tujuan dari penelitian ini adalah untuk mengetahui model sistem antrian serta menemukan alternatif untuk mengoptimalkan sistem pelayanan pada PT. Bank Sumut Kantor Pusat Medan. Sistem antrian teller yang diterapkan oleh bank ini adalah sistem antrian yang terdapat lebih dari satu jenis layanan yang diberikan, tetapi dalam setiap jenis layanan hanya terdapat satu pemberi layanan dengan memberi nomor antrian atau yang sering disebut Multi Channel Single Phase. Disiplin antrian yang digunakan pada bank ini yaitu first come first served (FCFS). Berdasarkan hasil pembahasan, model antrian yang diperoleh adalah yang berarti bahwa tingkat kedatangan nasabah berdistribusi Poisson, waktu pelayanan nasabah berdistribusi Eksponensial, jumlah server sebanyak empat, disiplin antrian adalah First Come First Serve (FCFS), jumlah nasabah yang masuk dalam sistem tidak terhingga dan ukuran populasi masuk tidak terhingga. Dengan dilakukannya evaluasi terhadap kinerja teller dapat membantu mengoptimalkan antrian yang terjadi pada PT. Bank Sumut Kantor Pusat Medan. Selain itu, Bank juga dapat menerapkan standar waktu pelayanan dan standar waktu tunggu nasabah.
Pengembangan E-Modul Interaktif Berbasis Matematika Realistik Di Kelas VIII SMP Swasta Palapa Telagah Sovarina Yasarifa Pohan; Prihatin Ningsih Sagala
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1518

Abstract

This study aims to obtain a constructivism-based e-module that is valid, practical, and effective, so that it can assist students in understanding the material for a two-variable linear equation system. The research instruments used were lesson plans, material validation sheets and e-module media, learning outcomes tests, and student and teacher response questionnaire sheets. After all instruments, lesson plans, and e-modules were declared valid by the validator, then readability tests and field trials were carried out. The results showed that: (1) the developed E-Module had met the validity values, namely (3.37 and 3.25) with a very feasible category; (2) The developed E-Module has met the practical value (79.75% and 90.5%) with very practical category; (3) The developed E-Module meets the effective criteria with the completeness of student learning outcomes that meet the criteria, namely 85% of students have obtained a score of 75 and the achievement of each indicator/learning objective is more than 65% of the total students.
Penerapan Data Mining Untuk Menganalisis Penjualan Produk Menggunakan Algoritma Apriori Berbasis WEB Syarief Afifi Sumantri; Hermawan Syahputra
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1532

Abstract

This study aims to determine the best selling food and beverage products at Caffe Kopi Kito. Data mining is the process of extracting useful information and patterns from very large data. Data mining includes data collection, data extraction, data analysis, and data statistics. The Apriori algorithm is a classic algorithm in data mining. This algorithm is used to see the intensity of occurrence of the relevant itemset or frequent items or association rules. This study uses consumer transaction data for 30 days in January 2023. Transaction data will be collected first based on the day and number of transactions, then the transaction data that has been collected will be grouped according to each item, the data that has been grouped will be carried out a priori algorithm process to determine the most dominant product. Then a system design will be carried out whose result will be a website. The results showed that using the website-based a priori algorithm could determine the most dominant product at Caffe Kopi Kito and make it easier for users to determine the most dominant product. Based on the results of product sales analysis at Cafee Kopi Kito, it can be concluded that working on the a priori algorithm on Caffe Kopi Kito using a website can be said to have the result of a product combination and in the future it can be used to create the best-selling menu packages at Cafee Kopi Kito.
Pelabelan Total Titik Ajaib Pada Graf Tangga Riandy Fauzi Manik; Marlina Setia Sinaga
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1533

Abstract

The labeling of a graph is a mapping that pairs the elements in the graph into positive integers. In this thesis, it discusses how the magic total point labeling algorithm on the ladder graph and the ladder graph and how the magic total point labeling on the ladder graph and the adder graph uses the magic square matrix modification using the durer method. Where the elements of the result of this magic square matrix modification will be used as point labels on the ladder graph and the ladder graph.
Analisis Kemampuan Pemecahan Masalah Matematika Dalam Menyelesaikan Soal Cerita Berdasarkan Prosedur Polya Sabrina Ratih Kusumaningrum; Muhammad Nailul Furqon; Wafna Jannata Ulya; Fitriyah Amaliyah
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1539

Abstract

Problem solving skills are important for students to overcome various problems related to learning and community life. This involves students actively exploring, observing, trying, and investigating using the knowledge and abilities they have. Problem solving is the main focus of developing students' higher order thinking skills in mathematics. This research was conducted by means of observation, interviews, and post-test methods on the 4th grade students of SD Negeri 7 Gondosari. In the results of the discussion, there are 10 data from 31 students which can describe a good level of problem solving. Some students experienced difficulties in implementing the problem and re-examining the results of the solution. Therefore, it is important for students to continue to hone their problem solving abilities using the Polya procedure and to re-check the correctness of the solutions that have been done.
Pengembangan, Uji Validitas, Dan Uji Reliabilitas Instrumen Tes Diagnostik Berformat Five Tier Pada Materi Hukum Newton Audina Paramitha Azahra; Wasis Wasis
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1556

Abstract

Students' understanding of physics concepts differs from one student to another. Based on the results of the five-tier conceptual diagnostic test, students' conceptions can be grouped based on several levels of conception. One of them is a misconception. This study aims to develop a five-tier format test instrument on Newton's Law material, test the validity and reliability of the test instrument, and use test instruments that have been developed to determine the level of conception of 20 students. The question instrument developed has been declared valid and reliable. The results of the final trial of 20 students showed that more than 50% of students experienced misconceptions. 
Implementasi Kurikulum Merdeka: Kendala dan Penanganannya dalam Pembelajaran di Sekolah Ummi Nur Afinni Dwi Jayanti; Aulia Andin Kinanti; Ade Sekar Anggraini; Adyla Syukhraini Marwi; Putri Agustina Anggreni Arwira; Raini Dahriana Pulungan
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1559

Abstract

The independent curriculum is a curriculum that has various learning topics and is more flexible for teachers and students. In fact, the government gives full authority and responsibility to all schools to create a curriculum that suits their needs and culture. The purpose of this research is to find and explain the obstacles faced by teachers in implementing the independent curriculum. Thus, research schools can determine the appropriate method to overcome this obstacle. This research uses descriptive qualitative method. The data collected is based on interviews and literature reviews from journals that discuss the independent curriculum. The results of the study show that teachers face a number of challenges in implementing an independent curriculum. Some of these challenges include the government not socializing the independent curriculum, preparing teachers to switch to an independent curriculum, and the availability of educational resources available to teachers, which are still focused on textbooks and handbooks.

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