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All Journal Sinkron : Jurnal dan Penelitian Teknik Informatika Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Journal of Research in Mathematics Trends and Technology Journal of Mathematics Technology and Education Jurnal Bastra (Bahasa dan Sastra) Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa

Mardiningsih

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Author-ID : 1706736

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Analysis of Transportation Method in Optimization of Distribution Cost Using Stepping Stone Method and Modified Distribution Annisa; Mardiningsih
Journal of Mathematics Technology and Education Vol. 1 No. 1 (2021): Journal of Mathematics Technology and Education
Publisher : Talenta Publisher

This study aims to examine each method to show the characteristics, advantages and disadvantages of the transportation problem solving method. Vogel Approximation Method (VAM) is an initial solution method that is better than other methods and generally produces an initial solution that is close to the optimum result. In this study the Stepping Stone and Modified Distribution methods produce the same total cost. The main difference between these two methods is in the step of using the shortest path. The author concludes that the determination of the optimal method must be adapted to the conditions of the transportation problem to be solved. The meaning depends on the number of problem variables which will include the number of sources, the number of destinations and the time provided to solve the transportation problem.

Application of Six Sigma Method for Quality Control of Palm Kernel Oil Production In PT Socfin Indonesia Novita Sari; Mardiningsih
Journal of Mathematics Technology and Education Vol. 1 No. 1 (2021): Journal of Mathematics Technology and Education
Publisher : Talenta Publisher

Socfin Indonesia is an upstream plantation company with the main products are Crude Palm Oil (CPO), Palm Kernel Oil (PKO), and Karet Alam. The problems that encounter is still found a defective product where the quality of the products produced still not fulfilling the company's quality standards. The purpose of this study was to apply the Six Sigma method in quality control for reducing defects in palm kernel oil (PKO) production at PT. Socfin Indonesia. The company has the characteristics for quality of palm kernel oil (PKO) products that consist of water content, broken core levels and dirt content. Based on the data obtained, the percentage of disability was 31.73% while the company's tolerance limit was 30% for overall production. The method used was Six Sigma with the DMAIC procedure. Based on the results of the study, the company's DPMO value was 105,724 with a company sigma capability value of 2.7496. The ability to produce defective products was about 31.72%. The proposed for improving the quality product of palm kernel oil (PKO) with the Six Sigma method against the company by complying the Standard Operation Procedure (SOP) that has been made to avoid anythings that can interfere the production process.

Application of Multi-Item EOQ Method in Raw Material Inventory Control at Jofie Bakery and Cake Shop Medan Hutahaean, Trisna D; Mardiningsih
Journal of Mathematics Technology and Education Vol. 1 No. 2 (2022): Journal of Mathematics Technology and Education
Publisher : Talenta Publisher

Inventory of raw material is one of the factors in the production process. Whereas lack of material would result in a slowing down of production, excess of raw materials would result in increased storage and other costs. The purpose of this study was to identify and analyze the control of the supply of raw materials applied by jofie bakery & cake shop. The kind of research used was quantitative research. The data source in this study USES secondary data sources directly from the company. The result of study showed that the use of EOQ methods on companies was resulted in cheaper cost when compared with the methods used by the company, and there was a difference in cost-saving expenses at 3.5% on average.

Co-Authors Aisyatur Rohmah Annisa Badriyah Wulandari Febby Arisca Zurfani Harahap, Desti Alannora Herman Mawengkang Hutahaean, Trisna D Marpongahtun Miranda Nababan, Esther S.M. Nadhila, Nurul Novita Sari Parapat Gultom Pujiana, Perli Rambe, Isnaini Halimah Saib Suwilo Sawaluddin Sutarman Suyanto Syahputra, MR Syahputra, Muhammad Romi Tarigan, Ruffiana Tulus

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