Fajriana, Fajriana
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Analisis Algoritma K-Medoids pada Sistem Klasterisasi Produksi Perikanan Tangkap Kabupaten Aceh Utara Fajriana, Fajriana
JEPIN (Jurnal Edukasi dan Penelitian Informatika) Vol 7, No 2 (2021): Volume 7 No 2
Publisher : Program Studi Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jp.v7i2.47795

Abstract

Belum adanya sistem pengelolaan data produksi perikanan tangkap di Kabupaten Aceh Utara  menyebabkan pemerintah Kabupaten Aceh Utara kesulitan dalam mengklasterisasi data produksi perikanan tangkap.  Penelitian ini bertujuan untuk menerapkan algoritma k-medoids dalam sistem klasterisasi data produksi perikanan tangkap berbasis web menjadi tiga klaster. Penelitian ini menggunakan  data produksi perikanan tangkap di Kabupaten Aceh Utara tahun 2019-2020 yang diperoleh dari Dinas Kelautan dan Perikanan Kabupaten Aceh Utara. Hasil penelitian dengan 10 kali pengujian menunjukkan bahwa nilai rata-rata iterasi k-medoids sebesar 2,5 dengan jumlah iterasi terbanyak 4 iterasi dan iterasi terkecil senilai 2 iterasi. Hasil cluster data produksi perikanan tangkap dengan jenis tangkapan ikan Albakora masuk kedalam potensi produksi tangkapan  klaster sedang. Jenis tangkapan ikan Alu-alu,  Tongkol Krai, Tuna Mata Besar, Tuna Sirip Biru Selatan masuk kedalam cluster rendah. Jenis tangkapan ikan Banyar, Bawal Hitam dan Bawal Putih masuk kedalam klaster tinggi. Adapun hasil klaster yang terbentuk dapat membantu pemerintah Kabupaten Aceh Utara dalam mengambil kebijakan untuk menambah nilai produksi tangkapan ikan di Kabupaten Aceh Utara.
Development of powtoon animation learning media in improving understanding of mathematical concept Akmalia, Rizkiana; Fajriana, Fajriana; Rohantizani, Rohantizani; Nufus, Hayatun; Wulandari, Wulandari
Malikussaleh Journal of Mathematics Learning (MJML) Vol 4, No 2 (2021): October
Publisher : Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjml.v4i2.5710

Abstract

The purpose of this development research is to determine the feasibility and effectiveness of using Powtoon animation learning media for flat-sided geometry. The development model used is the ADDIE model. The subjects of this study were students of class VIII-2 MTsS Syamsuddhuha (junior high religious school). The percentage results of product assessment by media experts are 96% in the very feasible category, the percentage result of product assessment by material experts is 92% in the very feasible category, and the percentage result of product assessment by 10 small group students is 94% in the very feasible category. Based on the results of the product assessment by all validators who stated that it was very feasible, the Powtoon animation learning media developed had meet the criteria for use for students. The effectiveness of using the product can be seen from the results of the comparison of the students' average pretest and posttest scores. The resulting product is effective in increasing the understanding of mathematical concepts, as evidenced by the average pretest score of 43,44, an increase in the posttest of 84,27, and the N-Gain value of 0,72 in the high category. It can be concluded that Powtoon animation learning media is feasible and effective to be used in improving the understanding of mathematical concepts.
The effect of REACT strategy assisted by GeoGebra software on students' mathematical representation ability Nurzannah, Nurzannah; Muliana, Muliana; Herizal, Herizal; Fajriana, Fajriana; Mursalin, Mursalin
Malikussaleh Journal of Mathematics Learning (MJML) Vol 4, No 2 (2021): October
Publisher : Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjml.v4i2.5709

Abstract

This study was conducted to determine the effect of REACT strategy assisted by GeoGebra software on students' mathematical representation ability. This study was quasi-experimental with a quantitative approach. The design used in this study was The Nonequivalent Posttest Only Control Group Design. Four posttest questions were given to 25 students of Class VIII A and 25 students of Class VIII B at SMP Negeri Arun Lhokseumawe (public middle school). The data obtained from the posttest results were analyzed by data normality test and data homogeneity test, then hypotheses were tested using a t-test to see the effect of REACT strategy assisted by GeoGebra software on students' mathematical representation ability. The results of the data analysis of the posttest score tested using the t-test, the sig value was obtained. (2-tailed) of 0.000 > 0.05. This showed that there was a significant effect of using the REACT strategy assisted by GeoGebra software on students' mathematical representation ability.