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All Journal Indonesian Physical Review Kappa Journal
Sapiruddin, Sapiruddin
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APPLYING K-MEANS ALGORITHM FOR CLUSTERING ANALYSIS EARTHQUAKES DATA IN WEST NUSA TENGGARA PROVINCE Kertanah, Kertanah; Rahadi, Irwan; Aryani Novianti, Baiq; Syahidi, Khaerus; Sapiruddin, Sapiruddin; Mandala Putra, Hadian; Gazali, Muhammad; Haiban Hirzi, Ristu; Sabar, Sabar
Indonesian Physical Review Vol. 5 No. 3 (2022)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v5i3.148

Abstract

This study aims to cluster and visualize the earthquake data on a geographical map to determine earthquakes' characteristics using the k-means algorithm. Cluster analysis using the k-means algorithm was carried out on the earthquake data. K-means algorithm is familiar and is one of the well-known techniques to have been applied in cluster analysis. One of Its advantages in cluster analysis is scaling large datasets, for example, earthquake data. The data used in this study is earthquake data in the West Nusa Tenggara from 1991 to 2021. Applying the proposed k-means algorithm, the optimal number of clusters (k) used in this clustering is 2, based on the highest silhouette score of 0.749. The cluster analysis on the geographical map showed that the epicenters of the earthquakes were pretty spread out before 2018, and the number of earthquakes in the eastern region of West Nusa Tenggara is more than in the western area. However, in 2018, the clusters were all bunched in the northern Lombok region. There were a few earthquakes in the west region in 2018, but they happened before August 5. Even after 2019, most earthquakes continue to occur, with the epicenters clustered close to the northern Lombok region  
Penerapan Model Pembelajaran Konstruktivisme Melalui Metode Eksperimen dan Demonstrasi Terhadap Hasil Belajar Siswa pada Materi Fluida Fartina, Fartina; Hizbi, Tsamarul; Zahara, Laxmi; Sapiruddin, Sapiruddin; Yunus, Muhammad
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.21219

Abstract

This study aims to determine whether there is an influence of the constructivism model through experimental and demonstration methods on student learning outcomes on fluid material at SMA Negeri 1 Suralaga in the 2022/2023 academic year". This study uses an experimental method with a posttest-only control design, which only provides a post-test at the end of the treatment. The population in this study were all students of class XI IPA SMA Negeri 1 Suralaga. Meanwhile, the sample in this study was class IPA 1 as the experimental group and class XI IPA 2 as the control group. The two samples were randomly selected with either Cluster Random Sampling (Area Sampling). The experimental group was taught physics using the constructivism model through experimental and demonstration methods and the control group was taught physics using the conventional model. The research data were analyzed using a one-sided t-test. Based on the results of the study obtained tcount (2,73 ) > ttable (1,68 )   at a significant level  is received. So, it can be concluded that there is an influence of the constructivism model through experimental and demonstration methods on student learning outcomes on fluid material.
Penerapan Pembelajaran Project Based Learning Untuk Meningkatkan Kemampuan Berpikir Kritis Mahasiswa Zahara, Laxmi; Syahidi, Khaerus; Fartina, Fartina; Novianti, Baiq Aryani; Sapiruddin, Sapiruddin
Kappa Journal Vol 7 No 3 (2023): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i3.24199

Abstract

Penelitian ini bertujuan untukmeningkatkan kemampuan berpikir kritis mahasiwa. Jenis penelitian ini adalah Penelitian tindakankelas karena mengupayakan perbaikandalam praktik pembelajaran dan melihat pengaruhnya. Penelitian dilaksanakan dalam dua siklus menggunakan Model Pembelajaran Project Base Learning. Aspek kemampuan berpikir kritis yang ditinjau adalah: 1) mengevaluasi; 2) Menganalisis argumen; 3) Mengidentifikasi Asumsi dan 4) memutuskan dan melaksanakan. Berdasarkan hasil penelitian kemampuan berpikir kritis mahasiswa mengalami peningkatan dari siklus 1 sebesar 18%.Untuk mahasiswa yang nilainya di atas 65 pada siklus I sebesar 15% meningkat pada siklus 2 menjadi 58% meningkat sebesar  43%
Co-Authors Aryani Novianti, Baiq Baiq Aryani Novianti Fartina Fartina Hadian Mandala Putra Kertanah, Kertanah Khaerus Syahidi laxmi zahara Muhammad Gazali Muhammad Yunus Rahadi, Irwan Ristu Haiban Hirzi, Ristu Sabar Sabar Tsamarul Hizbi, Tsamarul