• Title/Summary/Keyword: raw materials cost

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스테인레스 전기로 최적 원료장입 모델

  • 홍유신;박기진;오성수
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1990.04a
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    • pp.100-110
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    • 1990
  • An optimal raw mix model in stainless steel making is developed. The key raw materials in stainless steel making are stainless steel scrap, steel scrap, and alloy materials like Fe-Ni, Fe-Cr. Among those raw materials, the alloy metals are very expensive as well as rapidly price-changing items. Consequently, it is very important to develop an minimal cost raw mix scheme while the produced stainless steel satisfies the required specification in it's composition. The linear programming model is employed to determine the minimal cost raw mix scheme. Compared with the method being used, the developed linear programming model gives much faster and better solution (lower cost raw mix plan). Together with the linear programming model, the database is also developed, which includes the following: 1) data for raw materials, such as compositions, costs, densities, available inventory levels, and so on, 2) the required specifications process. The developed optimal raw mix model will be implemented in VAX computer.

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Generalized Single Manufacturer and Multiple Retailers Supply Chain Model in JIT Purchasing (JIT구매를 고려한 단일 제조업자-다소매업자의 공급사슬에서 통합재고모형)

  • Kim, Dae-Hong
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.4
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    • pp.25-34
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    • 2011
  • In this paper, we investigate an inventory system where a single manufacturer purchases and processes raw materials in order to deliver finished goods to multiple retailers. Earlier study in this type of supply chain only consider a single raw material in order to produce finished goods, but we consider multi-raw materials in order to produce finished goods. Also, we develop an iterative solution procedure to find the order quantity for the finished goods and raw materials, and the number of shipments between manufacturer and retailers that minimizes the total cost per unit time of the raw materials ordering and holding, manufacture's setup and finished goods holding, the retailer's ordering and inventory holding. Numerical examples are presented to illustrate that jointly considering the total cost results in less total cost than that of considering them separately.

A Study on the Least Cost Ration Formulation by Linear Programming -For the multi-mix problem - (선형계획법에 의한 최소비용사료 배합에 관한 연구)

  • 민병준
    • Korean Journal of Poultry Science
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    • v.8 no.1
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    • pp.25-30
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    • 1981
  • This study was conducted to find the method that the least-cost formula can be determined thus allowing a better keeping of raw material supplies under the constraints having to be used some raw materials that are either in limited supply or for other reason in restricted use. In this study, it was considered that three kinds of feed were produced under limited supply of six kinds of raw materials, and data for the analysis were collected from a feed mill in southern part of Korea. According to the result of this study, it was proved better to determine the least-cost formula as the multi-mix problem than as the simple least-cost problem when more than two kinds of feed were produced wilt limited supply of raw materials.

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A study on the utilige of materials of bread (식빵의 원.부재료의 역할에 관한 연구)

  • 신길만;정진우
    • Culinary science and hospitality research
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    • v.4
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    • pp.389-411
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    • 1998
  • The consumption of bread as the principal food is increasing. The taste of bread depends on the components of raw materials. Though the knowledge about the raw materials of bread is important for the development of new products and the cost accounting, it is difficult to find the study on the role of raw materials in making bread. Therefore, the purpose of this study is to integrate the existing theoretical study on bread. Then, it will provide the basic knowledge on the raw materials in making bread in order to develop the technique of making bread.

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Minimizing environmental impact from optimized sizing of reinforced concrete elements

  • Santoro, Jair F.;Kripka, Moacir
    • Computers and Concrete
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    • v.25 no.2
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    • pp.111-118
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    • 2020
  • The construction field must always explore sustainable ways of using its raw materials. Studying the environmental impact generated by reinforced concrete raw materials during their production and transportation can contribute to reducing this impact. This paper initially presents the carbon dioxide emissions from reinforced concrete raw materials, quantified per kilo of raw material and per cubic meter of concrete with different characteristic strengths, for southern Brazil. Subsequently, reinforced concrete elements were optimized to minimize their environmental impact and cost. It was observed that lower values of carbon dioxide emissions and cost savings are generated for less resistant concrete when the structural element is a beam, and that reductions in the cross section dimensions of the beams, sized based on the use of higher strength concrete, may not compensate for the increased environmental impact and costs. For the columns, the behavior differed, presenting lower values of carbon dioxide emissions and costs for higher concrete strengths. The proposed methodology, as well as the results obtained, can be used to support structural projects that have less impact on the environment.

관광호텔 조리부문의 식재료 구매관리에 관한 연구

  • 나영선
    • Culinary science and hospitality research
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    • v.3
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    • pp.181-202
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    • 1997
  • It is a Heavy Factor of the Labor, Food and Beverage Raw Materials Cost for the Food Service Industry Management of a Hotel Restaurant Operation. Especially, Food & Beverage Raw Materials are the Primary Factor of Determine the Product of Food & Beverage Quality for Sale in the Restaurant and that are Accompany with Cost. Therefore, This paper included that Analyze and Research of Purchasing Pattern, Propose to a New Concept of the Food & Beverage Purchasing Management for a Action about Purchasing Management Effectively.

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A Case Study on RFID-PPS(Radio Frequency IDentification-Pallet Pool System) (RFID-PPS (Radio Frequency IDentification-Pallet Pool System) 사례연구)

  • 안종윤;양광모;진향찬;강경식
    • Proceedings of the Safety Management and Science Conference
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    • 2004.05a
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    • pp.303-307
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    • 2004
  • Is not used by consistency transport at transport of freight nothing but is using Pallet only by pedestal when work palletized unit load or materials handling when keep simplicity receptacle which fill raw material or product in factory in our country. Therefore, pallet that is most important function of Pallet is not empled circulation to end consumer from manufacturing plant which is circulation process whole path being done and factory. It is real condition stopping only in extremely determinate part process use of warehouse back. Additionally, it is possible to figure out the flow of all the materials loaded on the RFID pallet; product, material, raw material immediately, so that epoch-making management is possible and it contributes to the reduction of logistics cost because there are little loss or outflow of pallet. The materials flow is getting speedy and inventory is decreasing in the logistics process, and also bad inventory and loss problems are prevented. As a result, not only logistics cost of company but also national logistics cost is decreased. Thus it contributes to the strength of national competitiveness.

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An integrated manufacturing and distribution model for a multi-echelon structure

  • Hwang, Heung-Suk
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1990.04a
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    • pp.222-244
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    • 1990
  • A multi-echelon structure of manufacturing and distribution system in considered, where the raw materials are transformed into a finished good through a number to manufacturing echelons and it is distributed to the lower echelons(retailers, or customers). The raw material, work-in-process, finished good inventory and the distribution costs are unified into one model. The objective is to determine the ordering policy of raw materials, manufacturing lot size, the number of sub-batch and the distribution policy of the finished good which minimize the annual total system cost. A computer program for a heuristic search technique is developed, by which a numerical example is examined.

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A Study on Transportation Optimization and Efficient Production Method of Raw Materials for Pellet for Construction of Supply Chain Management

  • Choi, Sang Hyun;Lee, Jae Hwan;Bakyt, Bekzhanov;Woo, Jong Choon
    • Journal of Forest and Environmental Science
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    • v.32 no.2
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    • pp.173-181
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    • 2016
  • This study designed a model of the efficient production schemes and raw materials transportation optimization of current South Korean's simple and monolithic distribution system of wood to build a SCM (supply chain management) as a basic level to establish a distribution of future by pellet production of raw materials costs and reduce transport costs, and specifically to forest of pallet to contribute to revitalizing the market. The result of each transportation costs after building the best transportation network from raw material supply area to demand area applying transport law was 964,600 thousands Won from 6 supply areas to 7 demand areas. And the result of each model's analysis to get the pellet's efficient production through production cost reduction showed that it reduced from 325,701 Won/t to 240,106 Won/t, results of existing efficient pellet for the production model 8,233 tons over 20,000 tons annual production capacity from the size of the expanded production capacity when the expansion. However, when the production size expanded to 50,000 Tons of the production, the effect was very small even though production cost decreased.

A study on a single production inventory model with decaying items (진부화 제품의 단일 생산 재고 모델에 관한 연구)

  • 소재영;윤덕균
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1995.04a
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    • pp.476-486
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    • 1995
  • In this paper, an attempt has been made to revise Raafat' s(1985) results on an inventory model for decaying raw materials and the finished product at a constant rate which was based on Goyal's integrated inventory model for a single product system. This paper is concerned with scheduling the frequencies of order quantity of several different raw materials on a production inventory model. The purpose of this paper is to present a simple method of deciding the frequencies of order quantity of raw materials, in the sense of minimizing the average total cost of the system. We describe on iterative procedure for directly determining near optimal frequencies of order quantity for the raw materials and the associated fundamental cycle time which can be used for constructing the production duration of the finished product. In cases where feasible schedules cannot be constructed using the values from the iterative procedure, the procedure provides a basis for changing the order quantity frequencies and the fundamental cycle time to obtain feasible schedules. An example is given to illustrate the derived results.

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