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All Journal E-JUPEKhu Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung
Nining Purwasih
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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EFEKTIFITAS MEDIA KOTAKMATIKA DALAM MENINGKATKAN KEMAMPUAN PERKALIAN PADA ANAK BERKESULITAN BELAJAR Nining Purwasih
Jurnal Penelitian Pendidikan Khusus Vol 4, No 1 (2015)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (126.044 KB) | DOI: 10.24036/jupe43480.64

Abstract

The Background of this research is found a child who has difficulties in  learning in 4th class of Elementary school. This child can’t to break the exercise of the arithmetic operations of multiplication and also can’t solve the multiplication of units and tens. In order to increasing ability of arithmetic multiplication operation by using kotakmatika media in mathematics lesson.   This research using Single Subject Research method with A-B-A design. The datas about ability of multiplication of the children is written. Technical analysis of the data used Visual Analysis of Graphs. Results were analyzed include the number of observations in the baseline condition (A-1) 5 times, intervention (B) 8 times, baseline (A-2) 4 times. The results showed that kotakmatika media can enhance child’s ability significantly. It can be seen from the analysis that the trend began to increased. At baseline conditions (A-1) children are only able to answer the multiplication 6 to 10 of 20 about 30% correctly . After being given the treatment by the media of kotakmatika,  child can answer questions about the multiplication correctly abouts 80% of the 20 questions that exist. Besides the intervention is stopped, then returned to kebaseline (A-2) in this condition the child is able to answer questions about the multiplication of 80% of the 20 questions which exist. This shows that the media kotakmatika can improve arithmetic operations of multiplication 6 to 10  in child learning disabilities. Based on data analysis that has been done, it can be concluded that through media kotakmatika can improve learning difficulties in child multiplication at fourth class. Therefore, it is suggested that in arith matic of the  teacher to use kotakmatika media can improve multiplication ability in child ability.
Sifat listrik dan mekanis komposit serat kelapa sebagai material proteksi petir Diah Permata; Herman H. Sinaga; Nining Purwasih; Reksa Pati
Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik Universitas Lampung Vol. 5 (2022): SINTA
Publisher : Fakultas Teknik Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.746 KB) | DOI: 10.23960/prosidingsinta.v5i.75

Abstract

Komposit serat kelapa sudah banyak digunakan sebagai bagian interior pada produk otomotif. Jika komposit serat kelapa digunakan sebagai eksterior maka harus dikaji kemampuan material tersebut dalam menyalurkan arus jika terkena kendaraan tersebut terkena sambaran petir. Komposit serat kelapa yang dibuat dalam penelitian ini dengan variasi komposisi: 5 wt%, 10 wt%, dan 15 wt%. Sifat listrik yang diukur adalah resistivitas-volume sedangkan sifat mekanis yang diukur adalah kuat tarik. Pengukuran resistivitas-volume menggunakan metode 4 titik probe dan pengukuran kuat tarik mengggunakan metode ASTM D638-1. Hasil pengukuran resistivitas-volume digunakan untuk menghitung konduktivitas-volume. Konduktivitas-volume yang paling tinggi yaitu 0,0135 S/m dihasilkan oleh komposit serat kelapa 15 wt%. Sedangkan kuat tarik yang paling tinggi yaitu 21,96 MPa juga dihasilkan oleh komposit serat kelapa 15 wt%. Namun konduktivitas komposit serat kelapa yang dihasilkan masih cukup rendah sehingga tidak cukup baik untuk digunakan sebagai material penyalur arus petir.
Co-Authors Diah Permata Herman Halomoan Sinaga Reksa Pati