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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) IJOG : Indonesian Journal on Geoscience JAS (Jurnal Agri Sains) Jurnal Media Informatika
Pamela, Pamela
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Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Languange, Linguistic, Communication & Media Mathematics Other

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KELAYAKAN LEMBAR KERJA PESERTA DIDIK DALAM SUBMATERI PENCEMARAN AIR KELAS X SMA Pamela, Pamela; Hardigaluh, Basuki; Candramila, Wolly
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 11 (2019): Nopember 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (561.613 KB)

Abstract

AbstractThis research aimed to determine the feasibility of Student Worksheet based on the analysis of the water quality of Ambawang River on the Sub Material of Water Pollution for first grade of high school. The study was conducted by descriptive method. The student worksheet consisted of learning goals, user instructions, research data, questions and conclusion of discussion material. This student worksheet was made through three stages, namely the preparation, revision and validation. The validation was carried out by 5 experts, consisting of 2 lecturers and 3 high school teachers. The validation data by five validators was calculated using the CVR and CVI formulas according to Lawshe (1975). The CVR and CVI value of the student worksheets was both 0,795 which mean that the student worksheets were not suitable for use and needed to be revised based on the recommedation from 5 validators. Keywords : Student Worksheet, Water Quality,  Submaterial of Water Pollution
Hyperparameter Tuning on Machine Learning-Based Landslide Susceptibility Mapping (Case study: Palu City and Its Surrounding areas) Sukristiyanti, Sukristiyanti; Pamela, Pamela; Putra, Moch Hilmi Zaenal; Arifianti, Yukni; Rozie, Andri Fachrur; Lestiana, Hilda; Susantoro, Tri Muji; Sumaryono, Sumaryono; Kristiawan, Yohandi; Putra, Iqbal Eras
Indonesian Journal on Geoscience Vol. 12 No. 1 (2025)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.12.1.43-53

Abstract

Landslide susceptibility mapping (LSM) produces a zonation map of landslide susceptibility levels, representing the future probability of landslides. It is necessary to give a guideline regarding spatial planning. A machine learning method was used, namely a random forest (RF) algorithm to map landslide susceptibility in Python. The case study is Palu City and its surrounding areas, which were attacked by a big earthquake on September 28th, 2018. Some earlier LSM studies did not discuss hyperparameter tuning, and several others did not mention the training accuracy. Therefore, this study is to find out whether the fast model without hyperparameter tuning and frequently overfitting, can well produce landslide susceptibility maps. The research questions were addressed by comparing two landslide susceptibility maps built with and without hyperparameter tuning using receiver operating characteristics (ROC) and landslide density (LD) analyses. This study shows that the area under the curve (AUC) of the landslide susceptibility map from the fast RF model without hyperparameter tuning is as high as the AUC from the tuned model map. It also happened in both landslide density (LD) maps, and there is no anomaly in the fast model map. Nevertheless, there are strange appearances in the fast model map. Therefore, hyperparameter tuning to obtain the optimal model with no overfitting is mandatory to predict landslide susceptibility spatially.
Analisis Kelayakan Usaha Penggiling Padi (Rice Milling Unit) di Desa Paoh Concong Kecamatan Simpang Hulu Kabupaten Ketapang Rivaldo, Febrianto; Maswadi, Maswadi; Pamela, Pamela
Jurnal Media Informatika Vol. 6 No. 1 (2024): Jurnal Media Informatika Edisi September - Desember
Publisher : Lembaga Dongan Dosen

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Tujuan dari penelitian ini adalah untuk menganalisis pendapatan dan kelayakan usaha penggilingan padi di Desa Paoh Concong Kecamatan Simpang Hulu Kabupaten Ketapang. Metode yang digunakan dalam penelitian adalah metode penelitian deskriptif dengan pendekatan kuantitatif. Penelitian ini dilakukan di Desa Paoh Concong Kecamatan Simpang Hulu Kabupaten Ketapang, pemilihan lokasi dilakukan secara sengaja (purposive) dengan pertimbangan bahwa di Desa Paoh Concong ini merupakan salah satu penghasil beras. Penelitian di lakukan selama 2 bulan mulai bulan Maret sampai April 2024. Populasi dalam penelitian ini usaha penggilingan padi di Desa Paoh Concong Kecamatan Simpang Hulu Kabupaten Ketapang, dengan penentuan sampel 30 (tiga puluh) usaha penggilingan padi dan jumlah yang aktif adalah 20 usaha penggilingan padi, yang tidak aktif berjumlah 10 usaha penggilingan padi. Hasil penelitian menunjukkan bahwa usaha penggilingan padi di Desa Paoh Concong memperoleh pendapatan selama 5 Tahun yaitu sebesar Rp. 30.032.041. Usaha penggilingan padi memperoleh NPV > 0 yaitu sebesar Rp. 12.439.410, nilai Net B/C > 0, yaitu sebesar Rp. 1,63, nilai IRR dari rata-rata responden adalah 28% dan payback period adalah 3 Tahun yang mana artinya usaha ini sangat layak dijalankan karena tidak melebihi umur ekonomis usaha tersebut.
BAURAN PEMASARAN DAN KEPUTUSAN PEMBELIAN DUNKIN’ DI KOTA PONTIANAK Pamela, Pamela; Ellyta, Ellyta; Widarti, Sri
JAS (Jurnal Agri Sains) Vol 9, No 1: Juni 2025
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jas.v9i1.1724

Abstract

Dunkin’ merupakan salah satu toko kue dan roti di Pontianak yang telah lama berdiri. Penelitian ini bertujuan untuk menganalisis hubungan bauran pemasaran dan keputusan pembelian Dunkin di Kota Pontianak. Penelitian dilakukan dengan metode kuantitatif, dengan menggunakan teknik convenience sampling terhadap 100 orang responden. Variabel bauran pemasaran yang memiliki hubungan dan signifikan dengan keputusan pembelian yaitu produk, people, dan physical evidence. Variabel yang memiliki hubungan yang kuat dan signifikan yaitu produk. Oleh karena itu, manajemen Dunkin’ dapat melakukan inovasi di bidang produk.
Co-Authors Basuki Hardigaluh Ellyta Ellyta Hilda Lestiana Kristiawan, Yohandi Maswadi - Putra, Iqbal Eras Putra, Moch Hilmi Zaenal Rivaldo, Febrianto Rozie, Andri Fachrur Sri Widarti, Sri Sukristiyanti Sukristiyanti, Sukristiyanti Sumaryono Sumaryono Tri Muji Susantoro, Tri Muji WOLLY CANDRAMILA Yukni Arifianti, Yukni