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All Journal Yayasan Cita Cendikiawan Al Khwarizmi Journal of Mathematics Theory and Applications
Liunokas, Ebenhaiser
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Pelatihan Aplikasi LaTeX Bagi Guru-guru SMP Negeri 1 Insana, Kabupaten Timor Tengah Utara Luan, Faustianus; Sikas, Oktovianus R.; Kelen, Yoseph P.K.; Liunokas, Ebenhaiser; Bano, Elinora N.
Dedikasi Sains dan Teknologi (DST) Vol. 3 No. 2 (2023): Dedikasi Sains dan Teknologi : Volume 3 Nomor 2, Nopember 2023
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/dst.v3i2.3203

Abstract

The aim of the community partnership program is to improve the thinking skills or increase the skills of PKM participating teachers in mastering LaTeX applications. This service aims to introduce LaTeX applications for teachers of SMP Negeri 1 Insana, North Central Timor Regency (TTU Regency) to create documents other than using Ms.Word. LaTeX software is a word processor that has advantages in the availability of symbols and environmental settings for mathematical formulas and others. Therefore, LaTeX is starting to be frequently used by educators, more specifically in the field of mathematics, in preparing lesson materials, be it textbooks, articles, RPS, student worksheets (LKPD), or other documents. This service activity is carried out in the form of mentoring or training using demonstration, practice, and discussion methods, which is carried out offline in the presence of four accompanying lectures and six students. The results of the activity show that the participants (in this case, the teachers) can run LaTeX programs and can create simple teaching material templates that contain mathematical symbols and formulas quite well. Participants also believed that LaTeX was very necessary in preparing documents for learning in various fields, especially for educators today.
PEMODELAN ARMA UNTUK PERAMALAN PENJUALAN BOLPOIN PADA CV. CHAVA GRUP CABANG KEFAMENANU: Indonesia Kolloh, Fanda Apriani; Binsasi, Eva; Salsinha, Cecilia; Liunokas, Ebenhaiser
Journal of Mathematics Theory and Applications Vol. 4 No. 1 (2025): Edisi Oktober 2025
Publisher : Program Studi Matematika, Universitas Timor

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Abstract

Pengelolaan persediaan yang efektif memerlukan peramalan permintaan yang akurat, khususnya pada perusahaan pemasok alat tulis kantor. CV. Chava Grup Cabang Kefamenanu merupakan salah satu perusahaan yang menghadapi fluktuasi permintaan bolpoin dari waktu ke waktu. Penelitian ini bertujuan untuk menerapkan model Autoregressive Moving Average (ARMA) dalam meramalkan penjualan bolpoin sebagai dasar perencanaan persediaan. Data yang digunakan adalah data penjualan bolpoin harian selama periode Juni 2022 hingga Mei 2023 sebanyak 288 observasi. Analisis dilakukan menggunakan pendekatan deret waktu dengan bantuan perangkat lunak R. Hasil uji stasioneritas menunjukkan bahwa data bersifat stasioner sehingga dapat dimodelkan menggunakan ARMA. Berdasarkan kriteria Akaike Information Criterion (AIC) dan uji diagnostik residual, model terbaik yang diperoleh adalah ARMA(3,3). Model tersebut digunakan untuk melakukan peramalan penjualan bolpoin selama 30 hari ke depan. Hasil peramalan menunjukkan bahwa penjualan bolpoin cenderung berfluktuasi pada periode tertentu tanpa pola tren yang jelas. Temuan ini diharapkan dapat menjadi bahan pertimbangan bagi perusahaan dalam merencanakan persediaan bolpoin secara lebih optimal dan berbasis data.
Co-Authors Bano, Elinora N. Binsasi, Eva Cecilia Novianti Salsinha Kolloh, Fanda Apriani Luan, Faustianus Sikas, Oktovianus R. Yoseph Pius Kurniawan Kelen