Papers by Amalia Febriyani
TELKOMNIKA (Telecommunication Computing Electronics and Control)
Rice is the primary staple food source for Indonesian people, with consumption increasing so that... more Rice is the primary staple food source for Indonesian people, with consumption increasing so that rice production needs to be increased. Rice drought is one of the problems that can hamper rice production. This research aims to determine the best extraction feature between the normalized difference vegetation index (NDVI) and the normalized difference water index (NDWI) in describing rice fields' dryness. Moreover, using the random forest regression algorithm. This research compares NDVI with NDWI using data originating from Sentinel-2A and retrieved via the google earth engine. Regression algorithms are used in research to predict drought in paddy fields. This research shows that NDVI is better than NDWI in predicting drought using random forest regression algorithms and logistic regression algorithms. The random forest regression algorithm based on the results obtained shows that the average root mean square error (RMSE) on NDVI is 0.018, and NDWI is 0.012. Based on the logistic regression algorithm results, it was found that the average value of RMSE on NDVI was 0.346, and NDWI was 0.336. Based on the results of the RMSE, it shows that the forecasting ability of the random forest regression algorithm is better than the logistic regression.
ETUDE: Journal of Educational Research
Background: Low intellect makes slow learner students feel inferior and feel that they will never... more Background: Low intellect makes slow learner students feel inferior and feel that they will never learn. As a consequence, slow learner students, sometimes, have no motivation to learn in them. Motivation has an important role in children's learning activities. It can be said that motivation is the driving force for children's activities. One of them is MF, a student identified as a slow learner by their class teacher. Purpose: For this reason, this study aims to determine the extent to which the causes of changes in MF motivation levels in the teaching and learning activities. Design and methods: This research uses a case study method. This research was conducted on one of the students identified by the class teacher as a slow learner. This research data using observation, interviews, and documentation. The collected data were grouped based on various factors that influenced learning motivation initiated by Dimyati and Mudjiono. Validation is done by triangulating data sour...
Jurnal EMPATI
Perilaku bullying di Indonesia tercatat sebesar 43,7% untuk tingkat SMA dengan kategori tertinggi... more Perilaku bullying di Indonesia tercatat sebesar 43,7% untuk tingkat SMA dengan kategori tertinggi berupa kekerasan psikologis (pengucilan). Peringkat kedua ditempati kekerasan verbal (mengejek) dan terakhir adalah kekerasan fisik (memukul). Perilaku bullying diantaranya disebabkan oleh konformitas teman sebaya. Penelitian ini bertujuan untuk menguji secara empiris hubungan konformitas teman sebaya dengan perilaku bullying pada siswa kelas XI IPS SMA Negeri 6 Semarang. Pengambilan sampel dalam penelitian ini menggunakan teknik Simple random sampling dan didapat sampel sebanyak 119 siswa. Metode penggalian data dengan menggunakan dua skala psikologi. Skala perilaku bullying dengan 21 aitem valid (α = 0,873) dan skala Konformitas Teman Sebaya dengan 20 aitem valid (α = 0,861). Analisis data menggunakan regresi linier sederhana. Hasil penelitian menunjukkan koefisien korelasi rxy= 0,448 dengan p = 0,000 (p<0,01) yang berarti ada hubungan positif yang signifikan antara konformitas tem...
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Papers by Amalia Febriyani