Purchasing raw materials aims to obtain an item that is needed by the company so we carry out transactions get goods achieve a smooth production process at company. In purchasing materials, companies usually have capacity in save costs order provide benefits for PT Wirataco Mitra Mulia processes field of stockpiling and asphalting Trumon Singkil boundary road. The results research use every day...

In the classical inventory models, the common unrealistic assumption is that all the items produced are of good quality in nature. However, in realistic environment, it can be observed that there may be some defective items in an ordered lot. These items are usually picked up during the screening process and are sold as a single lot at the end of screening process. Further, it is tacitly assume...

In this paper we derive a new structural property for an optimal solution of the economic lot-sizing problem with time-invariant cost parameters. We show that the total holding cost in an order interval of an optimal solution is bounded from above by a quantity proportional to the setup cost and the logarithm of the number of periods in the interval. Since we can also show that this bound is ti...

A purchasing inventory model with shortages where carrying cost, shortage cost, setup cost and demand quantity are considered as fuzzy numbers. The fuzzy parameters are transformed into corresponding interval numbers and then the interval objective function has been transformed into a classical multi-objective economic ordering quantity (EOQ) problem. To minimize the interval objective function...

The main objective of this research article is to optimize costs and logistic KPIs applying an economic order quantity (EOQ) inventory model in a metal-mechanic MSE with intermittent demand. Firstly, the forecast lowest MAD ECM selected. object under study, after ABC classification, belongs family products located class A due its valuation participation inventory. Croston method considered most...

Inventory of raw materials or at PT. PGP has not been planned properly so that one time the run out during production process. management applied by company paid attention to economical order quantity, and also point reordering materials. This course an impact on additional costs should be needed, in other words it is effective efficient, sees need apply EOQ method managing study aims determine...

Pizzahut Setiabudi Semarang is a middle class restaurant in Indonesia that serves pizza, pasta and also various kinds of food. The process recording stock inventories at currently still uses manual on books, both incoming outgoing materials. In addition, the procurement for raw material only estimates, this can lead to excess warehouse or actually experience shortage which later hamper operatio...

Pengelolaan bahan baku memiliki peran dalam meningkatkan keuntungan PT XYZ. Kondisi saat ini XYZ dihadapkan terjadi peningkatan permintaan terhadap readymix pada type K 225 akibat sudah dimulainya pembangunan di wilayah Kabupaten Madiun. Peningkatan perlu adanya perencanaan untuk mengatur kebutuhan baku. Pada penelitian menggunakan metode Material Requirement Planning (MRP) Penentuan lot MRP ti...