• The Journal of Bigdata
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• v.5 no.2
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• pp.1-15
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• 2020

The duty-free industry before COVID-19 has continuously grown since 2000, along with the increase of demand in tourism industry. To cope with the increased demand, the duty free companies have kept the strategies which focused on the sales volume. Therefore, they have developed the ways to increase the volume and capacity, not the efficient operations. In the most of previous research, however, authors have proposed the better strategies for marketing and supporting policies. It is very hard to find the previous research which dealt with the operations like logistics and inventory management. Therefore, in this study, it has been predicted the future demand of frequently purchased items in airport duty free shops based on the estimated number of departing passengers by the linear regression, which concluded with the appropriate inventory level. In addition, it has been analyzed the expected effects by introducing the inventory management policy considering the cost and efficiency of operations. Based on the results of this study, it may be possible to reduce total cost and improve productivity by predicting the excessive inventory problems at duty-free shops and improving cycles of supplying items.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.590-595
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• 2005

RFID is rising as a means which recognizes products efficiently and correctly. The use of RFID technology can reduce the expense of excess stocktaking, forgery, labor and improve supply network. RFID technology uses RF to recognize the products. EPC, a small tag, is attached to each product, which includes specific product information. Each EPC is only one and can recognize each product. If EPC tag moves to a specific location, the reader reads the tag, the data of which get to be stored in EPC information service, a data storage system. All services can approach EPC information service through web and whenever users demand services, they are provided with the data they want. This study shows an inventory control system is implemented by EPC information service.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.553-554
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• 2018

Supply Chain Management (SCM) is the overall process (component procurement, production planning, delivery, inventory control, etc.). It is the process from the supplier to the consumer until the raw material becomes the finished product. Basically, traditional supply chain management is primarily aimed at cost reduction and efficiency. However, considering only cost reduction and efficiency, it is not easy apply the center of 4th industry to Smart Factory. In this study, I propose a form of supply chain management network. It can be satisfy the security by using block chain and automatic control of each element by adding the internet of things.

• Journal of the Korea Institute of Building Construction
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• v.4 no.2
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• pp.73-80
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• 2004

The purpose of this study was to look up the proper inventory management system in construction industry. it is important for construction company to improve competitiveness and to reduce construction cost. Lot-sizing techniques were applied to rebar procurement in apartment project. The results of this study were as follows; the method of Groff's marginal cost showed the best performance of other techniques and the method of Norman showed a similar result.

• Proceedings of the KAIS Fall Conference
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• 2010.05a
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• pp.53-55
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• 2010

오늘날 기업들은 제품의 유통기한 경과에 따른 폐기비용이 증가함에 따라 이를 줄이기 위한 방안이 필요하게 되었다. 이에 본 연구에서는 쇼핑몰의 재고관리시스템과 웹로그 분석 시스템, 마이크로 블로그를 활용하여 소비기한에 다다른 기능성 주류 제품에 대한 이벤트를 생성해 주는 알고리즘을 제안하였다. 재고관리 시스템에서는 기존의 바코드가 아닌 타임바코드를 활용하여 소비기한을 고려하고, 웹로그 분석 시스템을 통해 고객들의 성향을 파악한 후, 마이크로 블로그를 통해 이벤트 글을 게시함으로써 이벤트가 생성된다. 마이크로 블로그를 통해 상호 연결된 고객들에게는 보다 신속한 정보로 맞춤식 서비스를 제공할 수 있을 것이다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.2
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• pp.341-346
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• 2013

Refrigerated warehouse inventory management program which manages the logistics of shipping&receiving and inventory quickly and accurately is a costly and labor-intensive maintenance because it is operated in the legacy system on a closed client-server environment. There are no services available for consignees who are the consumers of refrigerated warehouses except fax or phone for orders which makes the business process inefficient and creates many problems such as error and inaccuracy. In this paper, we design and implement a mobile framework with a legacy system supporting various services to the consignees for solving problems of outdated legacy systems and no services to use. The system supports promptness and accuracy which give the users improved satisfaction by providing orders and queries of inventory for the consignees on mobile devices.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2009.05a
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• pp.160-163
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• 2009

본 논문은 효과적인 물류 Process를 위해 일본의 도요타에서 만들어진 JIT(Just-In-Time) Process를 이해하고, 이를 SAP R/3 System을 이용해서 구현함으로써 물류 Lead Time 감소와 재고비용 감소에 얼마나 효과적인지를 분석한 다음 향후 실증연구를 위한 연구 모형과 검증 가설을 제안하였다.

• Proceedings of the CALSEC Conference
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• 2001.02a
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• pp.521-529
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• 2001

Market Transparency : ● 가격의 투명 - 시장 통합화 / 지역과 고객 수 / 다양한 가격 ● 재고의 투명 - 필요시 즉시 확인, 즉시 구매 가능 ● 공급자 투명 - 기존 공급선외 타 생산자 여부 확인 ● 제품의 투명 - 기존제품 대체가능, 제품선택 다양 ● 시장정보 공유로 투명한 거래 형성 Buyers와 Sellers간 다양한 정보공유 과잉재고, 배송과정, 결재상태 등 파악용이 ● 업체간 과도한 가격인하 경쟁 지양 사전 공개된 가격과 품질, 서비스 영향임 독자 기술제품은 다수의 Buyers가 경쟁 ● 산업별 시장집중화 현상 발생 정확하고 간소한 주문 Processing영향. 업무비용 절약, 현 고객관리 기획 확대(중략)

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.1
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• pp.161-170
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• 2019

Multi-product mass production small and medium enterprise factories have a wide variety of products and a large number of products, wasting manpower and expenses for inventory management. In addition, there is no way to check the status of inventory in real time, and it is suffering economic damage due to excess inventory and shortage of stock. There are many ways to build a real-time data collection environment, but most of them are difficult to afford for small and medium-sized companies. Therefore, smart factories of small and medium enterprises are faced with difficult reality and it is hard to find appropriate countermeasures. In this paper, we implemented the contents of extension of existing inventory management method through character extraction on label with barcode and QR code, which are widely adopted as current product management technology, and evaluated the effect. Technically, through preprocessing using OpenCV for automatic recognition and classification of stock labels and barcodes, which is a method for managing input and output of existing products through computer image processing, and OCR (Optical Character Recognition) function of Google vision API. And it is designed to recognize the barcode through Zbar. We propose a method to manage inventory by real-time image recognition through Raspberry Pi without using expensive equipment.

• Korean Journal of Construction Engineering and Management
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• v.12 no.3
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• pp.73-82
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• 2011

The term 'green' has become an important way of survival for the construction industry in 21th century in accordance with the emergence of the environmental crisis due to the climatic change. Especially the policy of carbon taxation, planed to be introduced from 2012, is expected to be a considerable burden to the construction industry which has abundant carbon emission during the resource transportation due to the complexity of resources and local distribution of the construction sites. In this regard, this study shows an optimizing strategy for delivery frequency, which downsizes the net distribution costs based on the assumption that, despite of its other advantagements, the frequent small lot mode of JIT delivery would take negative effects due to the increase of costs of transportation and carbon emission once the carbon taxation policy carried out. To simulate the efficiency of the management strategies, the System Dynamics modeling has been used. The results show that the frequent small lot transportation strategy is now always efficient method to these changes, and that the frequency of transportation should be re-determinated according to the extent of the imposition of carbon tax. This study provides the conceptual frame for an efficient management of transportation system of the construction industry, showing necessity of change of the resource transportation systems through analysing JIT deliver system in accordance with the global changes in environmental economy.