An Economic Order Quantity inventory model for a product with a circular economy indicator

2020 ◽  
Vol 140 ◽  
pp. 106215 ◽  
Author(s):  
Boualem Rabta
Keyword(s):  
Circular Economy ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity

A Generalized Economic Order Quantity Inventory Model with Shortage: Case Study of a Poultry Farmer

2018 ◽  
Vol 44 (3) ◽  
pp. 2653-2663 ◽  
Author(s):  
Amir Hossein Nobil ◽  
Amir Hosein Afshar Sedigh ◽  
Leopoldo Eduardo Cárdenas-Barrón
Keyword(s):  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity

scholarly journals PENERAPAN DARI MODEL MATEMATIKA PENGENDALIAN PERSEDIAAN BARANG (INVENTORY MODEL) PADA SISTEM PRODUKSI DI PD. HANDI MEUBEL CIREBON

2017 ◽  
Vol 1 (2) ◽  
pp. 11
Author(s):  
Herri Sulaiman ◽  
Wahyu Hartono ◽  
Jajo Firman Raharjo
Keyword(s):  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Holding Cost

Penelitian ini bertujuan untuk mengetahui model pengendalian persediaan atau dikenal dengan istilah Economic Order Quantity (jumlah pemesanan ekonomis) dan dapat diterapkan pada sistem produksi di PD Handi Meubel Cirebon. Pengendalian persediaan sangat penting diterapkan oleh suatu perusahaan karena dapat meminimalkan biaya persediaan. PD Handi Meubel telah melakukan perhitungan dengan rumus umum total biaya persediaan. Lebih lanjut, peneliti mencoba memberikan model perhitungan dengan model Economic Order Quantity (EOQ) yang dapat memberikan keputusan tentang jumlah pemesanan. Hasil pengendalian persediaan pada PD Handi Meubel belum ekonomis karena besar biaya pemesanan (annual ordering cost) dan biaya penyimpanan (annual holding cost) tidak relatif sama. Hal ini menyebabkan total persediaan tidak mampu mencapai nilai minimum. Penerapan model EOQ dapat memberikan solusi kepada PD Handi Meubel karena total persediaan dari perusahaan tersebut dapat mencapai nilai minimum. Ketentuan pemesanan diperoleh dari hasil perhitungan menggunakan persamaan model EOQ yang dikenal dengan istilah Wilson Formula. Tujuan jangka panjang dari penelitian ini bagi prodi pendidikan matematika yaitu sebagai desain bahan ajar pada materi atau pokok bahasan yang ada di dalam mata kuliah Kalkulus Diferensial yang berbasis pada model pengembangan bahan ajar tertentu sehingga diharapkan dapat membantu mahasiswa dalam memahami konsep-konsep esensial yang ada di dalam mata kuliah tersebut, sehingga kebutuhan belajar mahasiswa dapat terpenuhi dengan baik. Target luaran yang diharapkan terlaksana setelah penelitian ini dilakukan yaitu mempublikasikan hasil penelitian ini melalui publikasi ilmiah, prosiding, dan pengayaan bahan ajar. Dengan demikian diharapkan hasil penelitian ini dapat bermanfaat secara luas bagi perusahaan dan mahasiswa. Metode penelitian yang digunakan adalah metode observasi dengan sistem wawancara terhadap kepala produksi di PD Handi Meubel Cirebon.

scholarly journals ANALISIS DAN PERANCANGAN SISTEM INFORMASI DENGAN INTRANET: STUDI KASUS PERSEDIAAN MATERIAL PT BALFOUR BEATTY SAKTI INDONESIA

2007 ◽  
Vol 1 (1) ◽  
pp. 95
Author(s):  
Suparto Darudiato ◽  
Krisma Punta
Keyword(s):  
Information System ◽  
Object Oriented ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Problem Solution ◽  
Order Quantity ◽  
Safety Stock ◽  
Analysis And Design

Article discuss problem faced by PT Balfour Beatty Sakti Indonesia (PT BBSI), which is lack planning ofmaterial inventory supply. Inventory was bought overly as safety stock. That caused inventory stacking so the companyoperation less efficient and caused damage on the material itself. The inventory model will be used to overcome theproblem is Periodic Order Quantity (POQ) model that was develop from Economic Order Quantity (EOQ) basic model.The proposed problem solution will be applied in inventory information system in form of analysis and design of materialinventory information system object oriented using Mathiassen approach.Keywords: information system, inventory, intranet, material

scholarly journals Economic Order Quantity Model for Growing Items with Incremental Quantity Discounts, Capacitated Storage Facility, and Limited Budget

2020 ◽  
Vol 22 (1) ◽  
pp. 1-10
Author(s):  
Yosi Agustina Hidayat ◽  
Veterina Nosadila Riaventin ◽  
Okky Jayadi
Keyword(s):  
Cycle Time ◽  
Reference Model ◽  
Optimization Method ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Quantity Discounts ◽  
Order Quantity ◽  
Planning Period ◽  
Numerical Example

The development of the inventory model started when Harris introduced the classic inventory model. It was firstly published by Wilson using the optimization method. He derived a mathematical equation model to obtain economic order quantities. Later, this model is known as the classic Economic Order Quantity (EOQ) or Wilson Model. The classic inventory EOQ model has some limitations. The model assumed that order items do not have physical changes during a planning period. This assumption becomes the weakness of the classical EOQ inventory model. Many items have material changes during a planning period, such as amelioration, deterioration, and growth. This research proposed a new mathematical model. The model relaxes three implicit assumptions of the classical EOQ: (1) the ordered items do not grow; (2) unlimited capacity; and (3) unlimited budget. A solution procedure to solve the model was developed and illustrated with a numerical example. A numerical example was performed to compare the result between the reference model and the new model. The number of ordered items per cycle time increased by 7%, and cycle time increased by 28%. It increased because the proposed model tends to choose large purchased quantities to get a cheap price. It caused the number of ordered items per cycle time to be larger and the cycle time to be smaller than the reference model. This research also provided sensitivity analysis. It showed the response of decision variables to some changes in input parameters.

Inventory Model for the Batch Processing of Defective Products in Manufacturing and Remanufacturing

2013 ◽  
Vol 756-759 ◽  
pp. 4604-4611 ◽  
Author(s):  
Chi Chung Lin ◽  
Chwen Tzeng Su
Keyword(s):  
New Products ◽  
Batch Processing ◽  
Inventory Model ◽  
Rate Of Return ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Inventory Level ◽  
Order Quantity ◽  
Product Returns ◽  
Optimal Inventory Level

This study focuses on simple stationary demand satisfied by the remanufacturing of products and the manufacture of new products. Further, we presented how to use batch processing to reduce defective products in the remanufacturing and the manufacturing inventory. In this paper, we obtain the economic order quantity of new products and the optimal inventory level of products that have been remanufactured as well as the appropriate return rate for the economic order quantity and the economic remanufacturing quantity. We analyze an inventory system with unit product returns and demands wherein manufacturing is the cheaper alternative to remanufacturing. However, because demand exceeds the rate of return of defective products, remanufacturing of products is also required.

scholarly journals An inventory model for deteriorating items under the condition of permissible delay in payments

2002 ◽  
Vol 12 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Horng-Jinh Chang ◽  
Chung-Yuan Dye ◽  
Bor-Ren Chuang
Keyword(s):  
Real World ◽  
Inventory Model ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Permissible Delay In Payments ◽  
Credit Period ◽  
Numerical Examples ◽  
Eoq Models ◽  
Delay In Payments

In economic order quantity (EOQ) models, it is often assumed that the payment of an order is made on the receipt of items by the inventory system. However, such an assumption is not quite practical in the real world. Under most market behaviors, it can be easily found that a vendor provides a credit period for buyers to stimulate demand. In this paper, a varying rate of determination and the condition of permissible delay in payments used in conjunction with the economic order quantity model are the focus of discussion. Numerical examples are presented to illustrate the proposed models.

scholarly journals MODEL ECONOMIC ORDER QUANTITY (EOQ) DAN MODEL OPTIMISASI ROBUST DALAM PENENTUAN PERSEDIAAN ALAT SUNTIK (SPUIT)

2019 ◽  
Vol 8 (3) ◽  
pp. 164
Author(s):  
PUTRI BELLA SAGITA ◽  
NI KETUT TARI TASTRAWATI ◽  
KARTIKA SARI
Keyword(s):  
Robust Optimization ◽  
Optimization Model ◽  
Inventory Model ◽  
Buffer Stock ◽  
Economic Order Quantity ◽  
Economic Order ◽  
Order Quantity ◽  
Minimum Order ◽  
Eoq Model ◽  
Order Quantities

The purpose of this research is to determine and analyze the minimum order quantities and the supply cost through Economic Order Quantity (EOQ) Model without Stock Out, EOQ Model with Buffer Stock, and Robust Optimization. EOQ model without Stock Out is an inventory model with a fixed number of requests and a fixed period of demand so the goods are considered always available or there is no stock out. Whereas EOQ Model with Buffer Stock is an inventory model with uncertainty demand during the lead time that described with a uniform density function. Another model is Robust Optimization Model that is used for cases with uncertainty demand. The results showed that the minimum order quantities through EOQ Model without Stock Out and EOQ Model with Buffer Stock was almost the same value but the cost was more minimum with the EOQ Model with Buffer Stock. Whereas, through the Robust Optimization Model there are different minimum order quantities for each period with a minimum supply cost compared to the two previous models. This occurs in both types of Spuit, namely Spuit Terumo 3 mL and Spuit Terumo 5 mL.

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