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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 80 Documents
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Pengembangan LKPD Berbasis Scientific Approach Terhadap Kemammpuan Koneksi Matematik Pada Materi Operasi Pecahan Di Kelas VII MTS AL-MUJTAHID Gita Pitri; Muhammad Firdaus; Hartono Hartono
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 1 No. 2 (2022): 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.v1i2.719

Abstract

Pembahasan ini untuk mengetahui hasil dari LKPD berbasis Scientific Approach terhadap kemampuan koneksi matematik pada materi operasi pecahan di kelas VII MTS AL-Mujatahid yang sesuai dengan tahap kevalidan, kepraktisan, keefektifan. Pembahasan ini menerapkan bentuk rancangan pengembangan ADDIE, yang memiliki 5 tahapan pokok, yaitu analysis (Analisis), design (perancangan), development (pengembangan), Implementation (penerapan), Evaluation (evaluasi). Subjek pada pembahasan ini yaitu siswa kelas VII MTS AL-Mujtahid sebanyak 14 orang siswa. Dalam pembahasan ini instrumen yang diterapkan merupakan lembar validasi, angket, dan soal pretest posttest. Hasil penelitian yang pertama adalah validasi LKPD yang berarti nilai rata-rata atas ke-3 ahli senilai 89,33% sesuai kriteria sangat valid. Kedua yaitu nilai kepraktisan, berdasarkan pandangan melalui nilai angket yang diisi guru & siswa yang di akumulasikan hingga mencapai presentase senilai 92% sesuai kriteria sangat praktis. Kemudian keefektifan, diperiksa melalui hasil uji statistic inferensial menggunakan pretest dan posttest siswa sesuai hasil uji-t yaitu thitung < - ttabel signifikan Ditemukan perbedaan yang signifikan hasil belajar siswa dan kemampuan koneksi matematik, hingga LKPD di kategorikan efektif. Oleh sebab itu, dapat disimpulkan bahwa LKPD yang berbasis Scientific Approach terhadap kemampuan koneksi matematik pada materi operasi pecahan di kelas VII MTS tergolong valid, praktis, dan efektif untuk digunakan.
Meta Analysis: The Effect of Using Mathematics Learning Media to Students’ Mathematical Abilities. Winda Lestari; Muliawan Firdaus
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.615

Abstract

This study aims to determine : (1) The effect size of using mathematic learning media to students’ mathematical abilities as a whole, (2) The effect size of using mathematics learning media to students’ mathematical abilities based on level of education, (3) The effect size of using mathematics learning media to students’ mathematical abilities based on learning media used, (4) The effect size of using mathematics learning media to students’ mathematical abilities based on subject matter, (5) The effect size of using mathematics instructional media to students’ mathematical abilities based on quantified mathematical ablility. This research used meta analysis method. The sampling technique used purposive sampling and obtained 17 research that fit the criteria. Data collection techniques used documentation with the support of software publish or perish. The results of data analysis showed that : (1) Overall using the learning media has a large effect to students’ mathematical abilities as a proportion 0,972, (2) Based on level of education, the use of learning media has a largest effect size if applied at SMP/MTs as a proportion 1,039 (n=16, SD=0,754), (3) Based on learning media used, the visual media has a largest effect size to students’ mathematical abilities as a proportion 1,003 (n=13, SD=0,641), (4) Based on material that is taught, the use of learning media on a branch of logic material has a largest effect size to matematical abilities as a proportion 1,237 (n=2, SD=0,489), (5) Based on quantified mathematical abilities, the use of learning media has a largest effect size to students’ reasoning abilities as a proportion 1,303 (n=3, SD=0,353).
PERAMALAN PENJUALAN BERAS DI PERUM BULOG SUB DIVRE MEDAN MENGGUNAKAN METODE DOUBLE EXPONENTIAL SMOOTHING Sariaman Manullang; Abil Mansyur
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.618

Abstract

Perum Bulog as a State-Owned Enterprise has the main task, which is to conduct a quality and adequate basic food logistics business for the survival of the people. The problem that occurred in Perum Bulog Sub Divre Medan is that the rice supply in Bulog does not consider the demand in the market. Forecasting is an important tool in effective and efficient planning. Therefore, prediction is indispensable for predicting future events. This method essentially uses past data initiated by performing an exponentially decreasing weighting of older observational values or newer values. Brown's double exponential smoothing is a linear model proposed by Brown. This double exponential smoothing method is used when the data indicate a trend. In this study, the terbaik best parameter for forecasting the Number of Rice Sales in Perum Bulog Sub Divre Medan was α = 0.2 with MAPE of 0.27%. And the results of the forecast for Rice Sales at Perum Bulog Sub Divre Medan in 2022 are decreasing every month.
STUDI LITERATUR PENINGKATAN HASIL BELAJAR MATEMATIKA SISWA DENGAN MODEL PEMBELAJARAN KOOPERTIF TIPE STAD Winda Theressa Tambunan; W. L. Sihombing
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.619

Abstract

This study aims to find out that studying literature can effectively improve students' mathematics learning achievement with the STAD type cooperative learning model. The type of research used is research with a qualitative approach. Qualitative research uses descriptive or verbal data from people who have observed a behavior. The method used is literature study. Literature study is an activity that is closely related to the method of collecting library data, reading and taking notes as well as processing research materials. The type of data used is secondary data. Secondary data is data that already exists, so we just need to find and collect existing data. The secondary data source used in this research is student learning outcomes with the STAD type cooperative learning model. From the search results, the researchers found 7 journals relevant to the research topic. From the journal it was found that there was an increase in student learning outcomes using the STAD type cooperative learning model.
STUDI LITERATUR ANALISIS KEMAMPUAN KONEKSI MATEMATIS SISWA DENGAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK TALK WRITE (TTW) Chandro Surya Bagus Lumban Tobing; Waminton Rajagukguk
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.620

Abstract

This study aims to determine students’ mathematical connection abilities with the think talk write cooperative learning model. The type of research used is research with a qualitative approach. Qualitative research uses descriptive or verbal data from people who have behaved. The method used is literature study. The type of data used is secondary data. Secondary data is data that already exists, so we just need to find and collect existing data. The secondary data source used in this research is the influence of the cooperative learning model of the think talk write type on students’ mathematical connection .From the search results, the researchers found 3 journals and 2 thesis relevant to the research topic. From the journal it was found that there was an influence of the think talk write cooperative learning model on students’ mathematical connection abilities.
PEMODELAN FAKTOR-FAKTOR PENYEBAB KEMISKINAN DI PROVINSI SUMATERA UTARA MENGGUNAKAN METODE GEOGRAPHICALLY WEIGHTED REGRESSION (GWR) Siti Hartina Daulay; Elmanani Simamora
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.646

Abstract

Kemiskinan merupakan permasalahan multidimensi yang kompleks dan mencakup berbagai aspek. Akibat kompleksitas yang dimilikinya, penanggulangan kemiskinan memerlukan program yang terintegrasi dan tidak tumpang tindih. Tujuan dari penelitian ini terfokus pada analisis faktor-faktor penyebab kemiskinan di Provinsi Sumatera Utara dengan mempertimbangkan aspek spasial menggunakan metode Geographically Weighted Regression (GWR). Penelitian ini menggunakan data kemiskinan Provinsi Sumatera Utara pada tahun 2018. Berdasarkan pengujian heterogenitas spasial dan dependensi spasial dapat disimpulkan bahwa kemiskinan dipengaruhi oleh aspek spasial sehingga penelitian ini dapat dianalisis menggunakan metode GWR. Pemodelan dengan menggunakan metode GWR menghasilkan nilai yang lebih besar dari regresi global yang mengahasilkan . Kemudian metode GWR menghasilkan nilai AIC = 171.123 yang lebih kecil dibandingkan dengan model regresi global dengan nilai AIC = 185.909.Hasil analisis menunjukkan karakteristik persentase kemiskinan mengelompok. Daerah-daerah yang tergolong memiliki persentase tertinggi berada di daerah kepulauan Nias.
Penaksiran Parameter Pada Distribusi Erlang Berdasarkan Metode Maksimum Likelihood Dengan Menggunakan Algoritma Newton Raphson Dan Fisher Scoring Meili Yanti; Open Darnius
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.720

Abstract

The Erlang distribution is a special case of the Gamma distribution with the k shape parameter and the λ rate parameter. In this study, the parameter estimation of the Erlang distribution was carried out using the Maximum Likelihood method. In maximizing the function, an implicit and non-linear form is obtained, then it is solved using the Newton Raphson algorithm. Apart from Newton Raphon, the estimation of parameters was also carried out using the Fisher Scoring algorithm. The Fisher Scoring algorithm is similar to the Newton Raphson algorithm, the difference is that Fisher Scoring uses an matrix information. The result of parameter estimation in Erlang distribution using Newton Raphson algorithm which is applied to outgoing telephone call data that generated by Matlab R2010a software cannot be done simultaneously. Therefore, the parameter assessment is carried out on the k parameter first, then followed by the λ parameter estimation and the parameter and = 0.6886812 are obtained. Meanwhile, the parameter estimation using the Fisher Scoring algorithm produces an equation that is not different from the Newton Raphson algorithm
Model Estimasi Produksi Padi Menggunakan Analisis Regresi Data Panel Di Provinsi Sumatera Utara Berdasarkan Data Tahun 2015-2019 Fuji Hidayah; Mardiningsih Mardiningsih
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.722

Abstract

Analysis of panel data regression is a regression method to determine the relationship between the independent variable and the dependent variable using combined data, namely between cross-section data and time-series data.Analysis of panel data regression can apply to the processing of rice production estimates for an area including the province of North Sumatera. North Sumatera is one of the provinces in Indonesia, at the very of the population focuses on the agricultural sector as the main livelihood in rice being the primary production. Based on data on the development of rice production at the Agriculture Office of North Sumatra Province, the level of rice production in 2019 for North Sumatra Province reached 4,693,563 Ton/Year.Throught Panel Data Regression Analysis with the three approach methods is Common Effect Model (CEM), Fixed Effect Model (FEM) and Random Effect Model (REM) , the best approach method is obtained, namely the Fixed Effect Model (FEM) with the best estimation model is . The coefficient of determination of 0.950890, which means that the independent variable affects the dependent variable by 95.08% on rice production.Based on the estimation model, the development of rice production in the next 3 years, namely 2020, 2021 and 2022, has changes of around 39.88% (decrease), 10.68% (increase), 9.89% (increase).
Penyelesaian Vehicle Routing Problem Dengan Algoritma Clarke And Wright Savings Di Perumahan Umum Bulog Medan Amplas Nurul Aina; James Piter Marbun
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.723

Abstract

Distribution routes are generally a problem for every company, including in the public company BULOG Medan Amplas. Distribution to the Medan Amplas BULOG public company, namely having to serve every stall that is far from the warehouse with scattered locations, and limited vehicle capacity. So far, driver considerations in distributing products have only been based on random intuitions of driver and does not consider the efficiency of the route taken. Therefore, this research uses Clarke and Wright Savings algorithm to obtain optimal mileage by taking into account every consumer demand and vehicle capacity. Calculation results using the Clarke and Wright Savings Algorithm obtained the vehicle mileage of 695.08 km with a savings of 11 km or 1.56%.
EFEKTIVITAS PENDEKATAN REALISTIC MATHEMATICS EDUCATION TERHADAP PENINGKATAN KEMAMPUAN PEMAHAMAN KONSEP SISWA Unedo Samosir; Katrina Samosir
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Vol. 2 No. 1 (2023): April : 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.v2i1.724

Abstract

This research is an experimental research which aim is to know whether Realistic Mathematics Education approach is effective on ability of students’ mathematical concept understanding or not. The population in this research is all the students of class VIII SMP Swasta Bakti Mulia Onanrunggu. The sample is the students of class VIII-A as experimental group and the students of class VIII-B as control group. The instruments which are used consist of the ability of mathematical concept understanding test in α = 5% and df = 28 + 30 - 2 = 56, teacher’s observation notes, and student’s observation notes. Data analysis is done with t test, minimal mastery criteria , classroom activity and student response . The results of this research proves that Realistic Mathematics Education approach is effective on the ability of students’ mathematical concept understanding within score of t count is greater than t table . Classical mastery criteria accomplished by (85,7%) within individual mastery reach into 75,67. Class activity falls into the active category (76,7%), and student responses fall into the positive category (91,06%).

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