• 제목/요약/키워드: Production Systems

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중소 제조기업의 생산정보화(MES) 도입 전략에 관한 연구 (I) - 생산정보화 수준 진단 및 평가 (A Study on the Production Informatization Strategy for Korean SMEs of Manufacturing Industries (I) - Evaluation of Production Informatization Level)

  • 이주연;조문빈;박양호;이언;노상도;조현재;조용주;최석우
    • 한국정밀공학회지
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    • 제30권2호
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    • pp.194-205
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    • 2013
  • In recent years, the main concerns of enterprise management activities is how to strengthen the competitiveness to quickly respond to changes and sustain the growth in business environment. In order to achieve competitiveness and sustainability, a large variety of production informatization systems, such as MES (Manufacturing Execution System), ERP (Enterprise Resource Planning), have been introduced to manufacturing companies. However, there have been many problems owing to the reckless introduction of those systems. Therefore, it is necessary to evaluate the informatization level of the manufacturing company before introducing production informatization systems. This paper presents methodology and system to evaluate the informatization level of manufacturing company. The proposed evaluation method, based on the traditional questionnaire approaches, considers the various characteristics of the company. And then, we proposed models for calculation and production informatization level using 450 results of conducting a survey. Finally, a web-based system was developed for the evaluation of informatization level.

KF-X 양산 사업의 경제적 파급효과 분석 (Analysis of the Economic Impacts for KF-X Production Project)

  • 설현주
    • 시스템엔지니어링학술지
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    • 제9권2호
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    • pp.55-68
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    • 2013
  • This study aims to analyze how much KF-X production impacts on national economy by measuring economic spread effect based on inter-industry analysis. In order to evaluate the economic impact of KF-X production, we used input-output table of year 2007 of Korea. The results shows that KF-X production induces the production of 3,129 billon won and the value added of 1,206 billon won respectively. Also there are the creation of about 13,208 employment in the industry. The results from this study can be used as a basis for the further research on whether or not KF-X production could be processed.

통합 공급체인관리를 위한 생산/배송 스케줄링 (Production/Distribution Scheduling for Integrated Supply Chain Management)

  • 박양병
    • 대한산업공학회지
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    • 제28권4호
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    • pp.443-453
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    • 2002
  • Many firms are trying to optimize their production and distribution systems separately, but possible profit increase by this approach is limited. Nowadays, it is more important to analyze these two systems simultaneously for the integrated supply chain management. This paper is a computational study to investigate the effectiveness of integrating production and distribution scheduling. We are interested in a multi-plant, multi-retailer, multi-product and multi-period industrial problem where the objective in solving production and distribution scheduling problem is to maximize the total net profit. Computational results on test problems of various sizes using the heuristic we developed show a substantial advantage of the integrated scheduling approach over the decoupled scheduling process. Sensitivity analysis on the parameter values indicates that, under the right conditions, the effectiveness of integrating production and distribution functions can be extremely high.

MES 시스템을 이용한 생산 및 출하 신뢰성 향상에 관한 연구 (A Study on Improving the Production and Shipment Using MES System)

  • 조중현;배병곤;강경식
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2007년도 춘계학술대회
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    • pp.73-80
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    • 2007
  • Recently, the strategy of the age of limitless competition for existence of manufacturing company appears for the enhancement of productivity through the automatic system, the reduction for the cost for standardization and the decision making process for the information system. Especially the critical success factors in manufacturing company can be summarized for the establishment of production visibility through the production management, material & work-in-process management, the establish of the flexible manufacturing system for the changed order priority and the establish of the quality system for improvement of product and process quality. The existing production management systems supply only simple information about production results on real time, can delay quick decision making. And it can prevent acquiring the information about various customer needs and the communication problems with other systems. In this paper, it will show MES system, a solution for the problems of existing production management systems. And through a case study of D company, it will reveal improvement effect on shipment error using MES system and economic analysis for MES itself.

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가정생산의 가치산정을 위한 이론적 접근 (Theoretical Approach for Estimation of Value in Home Production)

  • 채경희;문숙재
    • 가정과삶의질연구
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    • 제7권1호
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    • pp.43-57
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    • 1989
  • In the materialistic societies, individuals get money return according to the importance of their roles. But unlike wage workers who are engaged in market production , housewives engaged in home production do not get that return. It is because the result of home production is not transacted in the market and the price is not given to it, so the value of home production is not estimated. Hence this study trcognizes again the value of home production, suggests the estimation methods of it in input and output based on home production systems and attempts to actualize those methods socially. This home production develops the human attributes of family members to act as a member of a society and potentially contributes to home income and Gross National Products, so it has social and economic value. In spite of that significance, the value of home production is not estimated, so its nor recognized and housewives engaged in home production are not acknowledged their ability. Hence based on home production systems form input to output, this study suggested opportunity cost method and market cost method in input, method by saving money expenditure, hybrid method and method by comparing with market in output.

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디스패칭 룰 기반의 Advanced Planning and Scheduling (APS) 시스템 활용 사례연구 (A Case Study on Application of Dispatching Rule-Based Advanced Planning and Scheduling (APS) System)

  • 이재용;신문수
    • 산업경영시스템학회지
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    • 제38권3호
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    • pp.78-86
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    • 2015
  • Up-to-date business environment for manufacturers is very complex and rapidly changing. In other words, companies are facing a variety of changes, such as diversifying customer requirements, shortening product life cycles, and switching to small quantity batch production. In this situation, the companies are introducing the concept of JIT (just-in-time) to solve the problem of on-time production and on-time delivery for survival. Though many companies have introduced ERP (enterprise resource planning) systems and MRP (material requirement planning) systems, the performance of these systems seems to fall short of expectations. In this paper, the case study on introducing an APS (advanced planning and scheduling) system based on dispatching rules to a machining company and on finding a method to establish an efficient production schedule is presented. The case company has trouble creating an effective production plan and schedule, even though it is equipped with an MRP-based ERP system. The APS system is applied to CNC (computer numerical control) machines, which are key machines of the case company. The overall progress of this research is as follows. First, we collect and analyze the master data on individual products and processes of the case company in order to build a production scheduling model. Second, we perform a pre-allocation simulation based on dispatching rules in order to calculate the priority of each order. Third, we perform a set of production simulations applying the priority value in order to evaluate production lead time and tardiness of pre-defined dispatching rules. Finally, we select the optimal dispatching rule suitable for work situation of the case company. As a result, an improved production schedule leads to an increase in production and reduced production lead time.

Effective Concepts of Harmonious Management of Production Systems

  • Arutiunian, Iryna;Poltavets, Maryna;Аchacha, Maryna;Bondar, Olena;Pavlov, Fedir;Gerasymenko, Oleksandr;Kulinich, Tetiana
    • International Journal of Computer Science & Network Security
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    • 제21권3호
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    • pp.141-144
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    • 2021
  • Modern concepts of management of construction production systems require solving the problems of harmonization of the distribution of structural elements on the way to overcoming global destabilization processes. An effective ratio of functional subsystems of production in an environment of mutual influence create sustainable opportunities for production management and contribute to the logical development of the system as a whole in achieving the main goal of harmonious management. The purpose of the study is to develop the concept of effective management of production systems in construction with the harmonious formation of organizational structures. The results of the study allowed to reveal the harmonization approach in improving the interaction of structural elements of production and accelerating their functional sensitivity to changes in the environment. Harmonious production system more effectively adapts to the diversity of interests, goals and actions at all levels of management of different subsystems in any environment.

Automated Supervision of Data Production - Managing the Creation of Statistical Reports on Periodic Data

  • Schanzenberger, Anja;Lawrence, D.R.
    • 한국디지털정책학회:학술대회논문집
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    • 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
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    • pp.39-53
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    • 2004
  • Data production systems are generally very large, distributed and complex systems used for creating advanced (mainly statistical) reports. Typically, data is gathered periodically and then subsequently aggregated and separated during numerous production steps. These production steps are arranged in a specific sequence (workflow or production chain), and can be located worldwide. Today, a need for improving and automating methods of supervision for data production systems has been recognized. Supervision in this context entails planning, monitoring and controlling data production. Two significant approaches are introduced here for improving this supervision. The first is a 'closely-coupledd' approach (meaning direct communication between production jobs and supervisory tool, informing the supervisory tod immediately about delays in production) - based upon traditional production planning methods typically used for manufacturing (goods) and adopted for working with data production. The second is a 'loosely-coupled' approach (meaning no direct communication between supervisory tool and production jobs is used) - having its origins in proven traditional project management. The supervisory tool just enquires continuously the progress of production. In both cases, dates, costs, resources, and system health information is made available to management. production operators and administrators to support a timely and smooth production of periodic data. Both approaches are theoretically described and compared. The main finding is that, both are useful, but in different cases. The main advantages of the closely coupled approach are the large production optimisation potential and a production overview in form of a job execution plan, whereas the loosely coupled method mainly supports unhindered job execution and offers a sophisticated production overview in form of a milestone schedule. Ideas for further research include investigation of other potential approaches and theoretical and practical comparison.

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THE BENEFITS OF CATTLE IN MIXED FARM SYSTEMS IN PABNA, BANGLADESH

  • Udo, H.M.J.;Meijer, J.;Dawood, F.;Dijkhuizen, A.A.
    • Asian-Australasian Journal of Animal Sciences
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    • 제5권3호
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    • pp.495-503
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    • 1992
  • The internal and external outputs of the agricultural sub-systems of mixed livestock-crop farms in Pabna Bangladesh were analysed, to clarify the multiple functions of cattle in farm systems. Production systems with grazing areas were relatively more productive than those with no grazing. There was a tremendous variation in farm income, largely because of land area. An increase of one ha in land area was estimated to boost farm income by about 50%. Number of cattle, cattle off-take percentage and milk off-take per average cow related positively to farm income. As land area decreased the relative importance of cattle production increased. Crops were dominant in producing food for home consumption. Cattle contributed only 5-6 per cent to home consumption. Cattle supplied a significant cash income: 45 per cent in the villages with grazing areas and 57 per cent in the other villages. In future, the cash output from cattle will decline and emphasis will shift to the role of cattle in supporting crop production. Any research or development strategy for livestock needs to focus first on the importance of the complex relation between livestock and crops.

MRP, JIT그리고 OPT의 Hybrid생산시스템 구현에 관한 연구 (A Study on Structuring the Hybrid Production System of MRP, JIT and OPT)

  • 조성훈;안동규;임명준
    • 한국컴퓨터정보학회논문지
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    • 제4권1호
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    • pp.54-61
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    • 1999
  • 실제 생산환경에서는 MRP JIT 그리고 OPT 생산시스템을 상호 보완적으로 사용할 필요가 있으므로 3가지 생산시스템의 역할을 분석하고, 이를 기초로 동적생산체계에 적합한 Hybrid생산시스템을 설계하는 것은 충분한 의의를 갖는다고 할 수 있다. 그러므로 본 연구에서는 개별시스템이 가지는 제조방식의 유용성과 한계성을 분석하고 생산시스템을 전략적 차원. 전술적 차원 그리고 운영적 차원으로 구분하여 Hybrid화를 시도하였다. 그리고 Hybrid시스템의 유용성을 증명하기 위하여 MRP, JIT 그리고 OPT시스템의 개념이 포함된 Hybrid시스템에 대한 Simulation을 실시하였으며, 그 결과 독립적인 개별시스템 보다 Hybrid시스템이 더욱 효과적임을 입증하였다.

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