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Perencanaan Persediaan Bahan Baku Semen Menggunakan Pendekatan Min-Max Inventory Berbasis Peramalan Febriawan, Najmadan; Winati, Famila Dwi; Larasati, Karina Amanda
Journal of Industrial and Mechanical Engineering Vol 3 No 1 (2025)
Publisher : Department of Industrial Engineering, Universitas Jenderal Soedirman.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jimien.2025.3.1.16231

Abstract

PT Solusi Bangun Indonesia is a cement manufacturing company that utilizes FABA (Fly Ash and Bottom Ash) as one of its supplementary raw materials. A significant issue faced by the company is the overstock of FABA, which contributes to increased storage costs and poses a risk of environmental pollution. This research aims to develop an optimal inventory planning strategy for FABA by integrating time series forecasting methods with a min-max inventory control policy. The study utilizes historical FABA demand data from July 2023 to June 2024. Three forecasting techniques are applied: moving average, weighted moving average, and exponential smoothing. Accuracy evaluation indicates that the moving average method with a parameter of n = 3 produces the lowest forecasting error, as measured by MSE and MAD. The forecasting model is further validated using the Moving Range Chart to ensure its stability and reliability. The calculated safety stock at a 95% service level is 191.34 tons, with a minimum inventory of 758.83 tons and a maximum of 1,326.31 tons. This forecasting-based min-max policy effectively enhances inventory efficiency, mitigates risks of overstock and stockout, and supports operational sustainability.
Can Sales Revenue Mediate the Relationship Between Market Share and Food Waste Management Practices at Restaurants in Banyumas? Faizah, Putri Nur; Romadlon, Fauzan; Winati, Famila Dwi; Wan Ahmad, Wan Nurul Karimah
Journal of Marketing Innovation (JMI) Vol. 4 No. 2 (2024)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/jmi.v4i2.185

Abstract

Indonesia, with its substantial population, faces a critical issue with food waste. The country's high food waste generation is concerning and necessitates action for sustainable development. Banyumas, a region experiencing a rise in restaurants and significant food expenditure, is particularly affected. In 2022, the restaurant sector in Banyumas emerged as the second-largest business sector, underscoring its significance and the need for focused attention. To effectively address food waste, it is crucial for restaurants to understand the interplay between sales revenue, market share, and waste management practices. This research explores the relationship between these factors within Banyumas' restaurant industry. Utilizing a quantitative approach, the study surveyed 102 restaurants in Banyumas Regency and employed SEM-PLS for model testing. Findings indicate that higher sales revenue positively influences food waste management practices, suggesting that increased income enables restaurants to better implement waste management strategies. This insight highlights the need for government efforts to enhance knowledge and coordination regarding restaurant food waste management