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All Journal SOSCIED Griya Journal of Mathematics Education and Application
Prily Azizah Humu
Universitas Negeri Manado
Education Mathematics Social Sciences

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Optimalisasi Keuntungan Kantin Kampus Dengan Program Linear Menggunakan Metode Simpleks: (Studi Kasus: Kantin Pondok Bitung) Chresensi Aghel Birana; Grezika Liling Taruk Allo; Keiko P. Tendeno Runtukahu; Prily Azizah Humu; Vemelia Esterlita Daud; Voni Tiku Rede; James U. L. Mangobi
SOSCIED Vol 8 No 2 (2025): SOSCIED - November 2025
Publisher : LPPM Politeknik Saint Paul Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32531/jsoscied.v8i2.1082

Abstract

To improve the profitability of food production within the Pondok Bitung Canteen case study, this study uses linear programming methodology, specifically the simplex method, to examine the role and contribution of Micro, Small, and Medium Enterprises (MSMEs) to the Indonesian economy. This study employs a quantitative approach, with interviews as the primary method of data collection. The collected data will be analyzed using triangulation techniques and an interactive analysis framework. Despite the challenges faced by businesses in gaining access to international supply chains, the study demonstrates that MSMEs are crucial for increasing PDB and creating jobs. Furthermore, the application of the simplex method demonstrates that Pondok Bitung Canteen can maximize profits by determining the optimal production volume for two main dishes, namely fish and chicken, based on the limited raw materials available. This investigation is crucial for benefiting MSME stakeholders, developers, and scholars, as well as assisting Pondok Bitung Canteen in improving the efficiency and effectiveness of its food production process.
Vape-Demic: Pengaruh Lingkungan Pergaulan terhadap Penularan Penggunaan Vape (Rokok Elektrik) menggunakan Model SEIR Prily Azizah Humu; Indah Chairun Nisa; Aprilia Pangemanan Montolalu Jehosua; Syeren Kowaas; Nopsi Kilaaku
Griya Journal of Mathematics Education and Application Vol. 6 No. 2 (2026): Juni 2026
Publisher : Pendidikan Matematika FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/griya.v6i2.1191

Abstract

The use of vape among teenagers and young adults has increased in recent years and is influenced by social environments. This study aimed to analyze the influence of social interaction on the spread of vape use using the Susceptible, Exposed, Infected, Recovered (SEIR) model. This research used a quantitative approach with an epidemiological mathematical modeling method. Data were collected through an online survey using Google Forms involving young people in Tondano from March 12, 2026 to May 10, 2026. The study sample consisted of 54 respondents selected using purposive sampling techniques. Data analysis was conducted by calculating the SEIR model parameters based on survey results, followed by simulation using RStudio to observe the dynamics of population changes in each group. The results showed that social interaction had a significant influence on the spread of vape use. The β parameter value of 0.444 indicated the influence of social interaction on susceptible individuals. The α parameter value of 0.923 showed that individuals who became interested in vape had a high probability of becoming active users, while the γ parameter value of 0.541 indicated that some active users were able to stop using vape. Simulation results demonstrated that the number of active vape users increased over time due to social environmental influences. This study shows that the SEIR model can be applied to analyze the spread of social behavior, particularly vape use behavior.
Co-Authors Aprilia Pangemanan Montolalu Jehosua Chresensi Aghel Birana Grezika Liling Taruk Allo Indah Chairun Nisa Keiko P. Tendeno Runtukahu Nopsi Kilaaku Syeren Kowaas Vemelia Esterlita Daud Voni Tiku Rede