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Journal : Journal Of Engineering Sciences (Improsci)

Supplier Selection Using the Analytical Hierarchy Process (AHP) Approach in Ma' Ipeh MSME Waeni, Waeni; Kartini, Nuri
Jurnal Improsci Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.9

Abstract

In the Analytical Hierarchy Process (AHP) method, a hierarchical structure chart is formed to be able to solve a complex and unstructured problem. Which aims to define a problem from the general to the specific. The problem hierarchy is structured to assist in a decision-making process by taking into account all decision elements involved in the system. Ma'Ipeh Micro, Small and Medium Enterprises (MSME) are one of the community industries that are engaged in onion processing, in order to be able to produce a product that is in accordance with the wishes of consumers. Until now, Ma'Ipeh MSME continue to maintain performance both in terms of products and suppliers. To keep things in good condition and continue to grow, it is necessary to select suppliers that are in accordance with the needs and criteria of MSME. The purpose of this study was to find criteria for selecting suppliers, determining the priority of onion suppliers, and determining follow-up on all other onion suppliers according to their performance. The method used in this research is the AHP. The AHP method is used for effective decision making on complex issues. The criteria used in selecting suppliers include price, quality, service and quantity determination. The results of calculations using AHP, obtained the onion supplier with the best value, namely supplier Saniyah with a weight of 0.951. The next priority supplier is Karim with a weight of 0.337, then Amelia with a weight of 0.279.
Handling of the Preparation of Wicker Raw Materials with ABC Analysis Approach Kartini, Nuri
Jurnal Improsci Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.67

Abstract

In connection with the importance of ABC method analysis in company management, this can be applied to rattan companies that aim to classify or group raw material inventories and find out the raw material items often used in each production. From the results of this study, it can be concluded that the ABC analysis approach to controlling rattan raw material inventory can be classified as follows: Class A classification is classified as raw materials that require strict control, consisting of Mandola Polished AB rattan raw materials, CL rattan Lasio Mandola Polished BC rattan. Class B classification is classified as requiring moderate control, consisting of 8 items of rattan raw materials, namely Tohiti rattan, which has a percentage of total cost, Subaliyu rattan, Semambo rattan, Pietrit rattan, Mandola Semi Polished AB rattan, Mandola Semi Polished CD rattan, Core rattan, Manau rattan. Class C classification includes loose control, consisting of 4 rattan raw materials items: Mandola Semi Polished BC rattan, Jawit rattan, Mandola Semi Polished CD rattan, and Sanjat rattan.
Rubber Ball Theory: An Elastic Model of Production Line Balancing and Its Impact on Supply Chain Performance Kartini, Nuri; Hermawan, Andri; Idris, Mohd Razif
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1054

Abstract

Background. Production line balancing is a key element in improving the capacity and stability of manufacturing systems, yet conventional practices often ignore the elastic relationship between production intervals, capacity, and resource structure. This research develops and formalizes Rubber Ball Theory, a theoretical approach that views production systems as elastic entities, where changes in one operational variable trigger compensatory responses in other variables. Aims. The objective of this research is to develop a mathematical model for interval-based production line balancing and analyze its impact on overall supply chain performance. Methods. The research methodology includes developing an interval-based line-balancing optimization model, integrating concepts of bottlenecks and elastic capacity planning, and conducting empirical testing through a manufacturing industry case study. The developed model minimizes the system interval as the primary control variable, accounting for capacity constraints, precedence relationships, and parallel machine configurations. Sensitivity analysis is performed to evaluate the system's response to changes in the target interval and the number of parallel resources. Result. The results show that emphasizing production intervals without adjusting structural capacity leads to system instability and bottleneck displacement, while an elastic approach based on Rubber Ball Theory can sustainably increase production capacity. Furthermore, this approach has been shown to improve the reliability, responsiveness, and efficiency of asset management in the supply chain and contribute to reducing the variability of production flows that trigger the bullwhip effect. Conclusion. The main contribution of this research is the provision of an integrated conceptual and mathematical framework linking production line balancing to supply chain performance through elastic management of production intervals. Implication. These findings provide theoretical and practical implications for designing more adaptive and sustainable production systems and capacity planning.
Improving Food Security and Sustainability in Koperasi Merah Putih: A Conceptual Model of Food Supply Chain Management Widyani, Retno; Kartini, Nuri; Hermawan, Andri; Idris, Mhod Razif
Jurnal Improsci Vol 3 No 4 (2026): Vol 3 No 4 February 2026
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i4.1055

Abstract

Background. Food security and sustainability are key challenges in the modern food system, characterized by fragmented production, high food losses, and weak coordination among supply chain actors. Food Supply Chain Management (FSCM) is a strategic approach to integrating the flow of products, information, and logistics from upstream to downstream. Aims. This study aims to develop a conceptual model of FSCM based on Koperasi Merah Putih, the primary institutional actor in strengthening the food supply chain. Methods. The research method employed a systematic literature review of relevant scientific publications and policy documents. Result. The study results indicate that the Koperasi Merah Putih has the potential to act as a supply chain coordinator through production aggregation, logistics management, and information management. Information technology support, government policies, and logistics infrastructure strengthen the cooperative's ability to improve FSCM performance. Conclusion. Optimal FSCM performance subsequently contributes to increased food security and the sustainability of the food system. Implementation. The developed conceptual model is expected to serve as a basis for further empirical research and a reference for formulating cooperative-based food policies.