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All Journal Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Fadila Inka Syahfitri
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Astronomy Education Health Professions Languange, Linguistic, Communication & Media Mathematics Social Sciences

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Model Matematika terhadap Dinamika Kecanduan Judi Online pada Masyarakat Desa Tanjung Putus Fadila Inka Syahfitri; Erika Handayani Br. Siahaan; Fani Indriyani Ningsih; Apriyani Sitompul
Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Vol. 3 No. 1 (2025): Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/arjuna.v3i1.1607

Abstract

This study develops a mathematical model to analyze the dynamics of online gambling addiction among the Tanjung Putus Village community using the SEIR (Susceptible-Exposed-Infectious-Recovered) model approach. This model aims to understand how the spread of online gambling addiction develops within a community and identify factors that affect the transition of individuals from one status to another, from susceptible (Susceptible), exposed (Exposed), infected (Infectious), to recovered (Recovered). The results show that although the number of recovered individuals continues to increase, the recovery rate (R) remains slow due to the low recovery rate ( ). This indicates that without more effective interventions, infected individuals will remain trapped in addiction for a long time.
Analisis Hubungan Surat Masuk terhadap Penerbitan Surat Keluar (SPT dan SPPD Karyawan) di Kantor Bupati Langkat Menggunakan Metode Regresi Linear Erika Handayani Br Siahaan; Fadila Inka Syahfitri; Rico Pradana Dita; Rizq Alwi Marpaung; Hendra Cipta
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 3 No. 3 (2025): Juni: Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v3i3.665

Abstract

This study aims to determine the relationship between the number of incoming letters and outgoing letters in the form of Assignment Letters (SPT) and Official Travel Orders (SPPD). The research employs a quantitative approach using simple linear regression analysis, with data collected through direct observation and official document records. The findings indicate a positive relationship between incoming and outgoing letters; however, the relationship is not statistically significant (p-value = 0.068). The coefficient of determination (R²) is 0.358, meaning that 35.8% of the variation in outgoing letters is influenced by incoming letters, while the rest is affected by other factors. These results underscore the need for stronger administrative management systems to improve bureaucratic efficiency and accountability.
Co-Authors Apriyani Sitompul Erika Handayani Br Siahaan Erika Handayani Br. Siahaan Fani Indriyani Ningsih Hendra Cipta Rico Pradana Dita Rizq Alwi Marpaung