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All Journal Teknik Mesin "TEKNOLOGI" Jurnal Teknik Industri Terintegrasi (JUTIN)
Sakti, Angga Yuda
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Evaluasi Kinerja Forecasting Penjualan Berdasarkan MAD, MSE, dan MAPE pada PT XYZ Logistik Manado Anwar, Fahri; Baharuddin, Siti Ruqaiyah; Farhan, Muhammad; May Willis, Tito Bisma; Sakti, Angga Yuda
Teknik Mesin "TEKNOLOGI" Vol 27, No 2 OKT (2025): Jurnal Teknik Mesin TEKNOLOGI
Publisher : Universitas Negeri Makassar

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Abstract

Penelitian ini bertujuan mengevaluasi akurasi peramalan penjualan pada PT XYZ dengan memanfaatkan metode Moving Average sebagai dasar perhitungan. Data penjualan aktual dibandingkan dengan hasil forecast perusahaan untuk mengetahui tingkat ketepatan model dalam memprediksi kebutuhan persediaan. Tiga ukuran kesalahan digunakan dalam analisis ini, yaitu Mean Absolute Deviation (MAD), Mean Squared Error (MSE), dan Mean Absolute Percentage Error (MAPE), guna menggambarkan seberapa besar penyimpangan yang terjadi antara ramalan dan realisasi. Hasil menunjukkan adanya variasi error yang cukup besar antarproduk, dengan beberapa produk mengalami penyimpangan tinggi. Kondisi ini mengindikasikan perlunya penyesuaian metode peramalan agar perencanaan stok dapat dilakukan secara lebih akurat, efisien, dan sesuai pola permintaan.
Tingkat Kepuasan Mahasiswa Dalam Menggunakan Sistem Informasi Akademik Universitas Negeri Gorontalo Menggunakan PSSUQ Auliyani, Andi Sitti Dwi; Sakti, Angga Yuda; Susiati, Devi; Mohamad, Silvana
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.55178

Abstract

This study aims to measure the level of user satisfaction, specifically among Industrial Engineering students, with the Academic Information System of Universitas Negeri Gorontalo (SIAKAD UNG) using the Post Study System Usability Questionnaire (PSSUQ) method. Data were collected by distributing an online questionnaire to 63 student respondents. The results show an overall average score (Overall) of 3.88 (on a 1-5 scale), indicating a positive level of user satisfaction. Information Quality (InfoQual) achieved the highest score (3.89), followed by System Usefulness (SysUse) at 3.85, and Interface Quality (IntQual) at 3.78. The key finding reveals that the system's strength lies in its information quality, while the user interface is the aspect most in need of improvement to enhance the overall user experience. The results of this study are expected to serve as an empirical reference for the development and quality improvement of SIAKAD UNG services.
Co-Authors Auliyani, Andi Sitti Dwi Devi Susiati Fahri, Anwar Muhammad Farhan Silvana Mohamad Siti Ruqaiyah Baharuddin Willis, Tito Bisma May