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All Journal SOSCIED Griya Journal of Mathematics Education and Application
Syeren Kowaas
Universitas Negeri Manado
Education Mathematics Social Sciences

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PENERAPAN PROGRAM LINEAR SEBAGAI STRATEGI EFISIENSI PRODUKSI PADA USAHA MARTABAK TRADISIONAL RITEY Nita Anggriani; Syeren Kowaas; Asmita Masloman; Rygel Angkaa N. Marthing; Maria G. H Wehantow; Julyan Davino A. Salarupa; Imanuek G Kalaena
SOSCIED Vol 9 No 1 (2026): SOSCIED - Juli 2026
Publisher : LPPM Politeknik Saint Paul Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32531/qx13ef27

Abstract

This study aims to determine the most profitable production combination for the traditional martabak business in Ritey Village by utilizing the simplex method as an analytical tool. The business faces constraints related to raw materials, capital, and production time, which directly affect the number and types of martabak produced daily. Using a descriptive quantitative approach, real data were collected through field observation and interviews, including production time, raw material usage, production costs, and net profit for the three types of martabak produced. These data were then formulated into a linear programming model to maximize profit. The results show that the optimal production combination is achieved at , , and , yielding a maximum daily profit of Rp240,000. The findings reveal a clear difference between the intuitive production decisions previously made by the business owner and the optimal strategy generated through mathematical analysis. This study demonstrates that the simplex method can serve as an effective and practical strategy for small-scale traditional culinary enterprises to enhance production efficiency without altering the product’s traditional characteristics and flavor.
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 Anggriani, Nita Aprilia Pangemanan Montolalu Jehosua Asmita Masloman Imanuek G Kalaena Indah Chairun Nisa Julyan Davino A. Salarupa Maria G. H Wehantow Nopsi Kilaaku Prily Azizah Humu Rygel Angkaa N. Marthing