• 대한안전경영과학회지
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• 제16권2호
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• pp.139-146
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• 2014

In Korea's distribution and production field establishment of logistics information system and automation of logistics were greatly developed. But there is no characteristic and professionalism about hospital logistics, and distribution center is located in outside warehouse, logistics system is very important. Since hospital has human power to receive product, system is not as much required, but outside warehouse requires system for arrival from medicine and medical supplies wholesale dealer and vender, warehousing, storage, and automation facilities, and system for various works such as peaking instruction, classification, packing, cargo-working, delivery, order of medicine from hospital and non-medicine in hospital is essential. Therefore, This study is about development of automatic identification of slide which cannot be overlooked in efficiency of hospital logistics, establishment of database, and information interlocking between automatic storage system and outside warehouse.

• Journal of Information Technology Applications and Management
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• 제18권1호
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• pp.125-141
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• 2011

As the sales volume of online shops increases, the job burden in the back-offices of the online shops also increases. Order picking is the most labor-intensive operation among the jobs in a back-office and mid-size pure click online shops are experiencing the time delay and complexity in order picking nowadays while fulfilling their customers' orders. Those warehouses of the mid-size shops are based on manual systems, and as order pickings are repeated, the warehouses get a mess and lots of products in those warehouses are getting missing, which results in severe delay in order picking. To overcome this kind of problem in online clothing shops, we research a methodology to locate warehousing products. When products arrive at a warehouse, they are packed into a box and located on a rack in the warehouse. At this point, the operator should determine the box to be put in and the location on the rack for the box to be put on. This problem could be formulated as an Integer Programming model, but the branch-and bound algorithm to solve the IP model requires enormous computation, and sometimes it is even impossible to get a solution in a proper time. So, we relaxed the problem, developed a set of heuristics as a methodology to get a semi-optimum in an acceptable time, and proved by an experiment that the solutions by our methodology are satisfactory and acceptable by field managers.

• 조명전기설비학회논문지
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• 제12권1호
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• pp.85-92
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• 1998

본 논문에서는 페트리 네트로 記述된 제어 사양을 접속 행렬로 해석한 후, 그 결과를 근거로 병렬 시퀸스의 수행이 가능한 순차 시스템 제어기(Sequential System Controller)를 설계하였다. 순차 시스템 제어기는 입력 처리부, 그리고 점화 처리부와 토큰 제어기로 구성된 페트리 네트 제어기로 구성된다. 입력 처리부에서는 입력 신호를 선택하여 점화 처리부로 전달하며, 점화 처리부는 토큰 운전기의 토큰 상태에 따라서 입력된 신호의 점화 여부를 판단하게 된다. 제안된 제어기는 제어 사양의 변경시 접속 행렬을 저장한 롬의 내용 변경만으로 제어기의 변경이 가능하고, 페트리 네트 제어기의 모듈화가 가능하여 기능의 확장이 용이하므로 자동창고 시스템, 반송 시스템, 및 승강기 시스템과 같은 순차 시스템 제어기의 개발 및 실현을 용이하게 할 수 있다.

• 대한산업공학회지
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• 제37권3호
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• pp.248-257
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• 2011

Cross docking is a logistics management concept in which items delivered to a terminal by inbound trucks are immediately sorted out, routed and loaded into outbound trucks for delivery to customers. Two main advantages by introducing a cross docking terminal are to consolidate multiple smaller shipment into full truck load and remove storage and order picking processes to save up logistics costs related to warehousing and transportation costs. This research considers the scheduling problem of trucks in the cross docking terminals with multi-door in an inbound and outbound dock, respectively. The trucks sequentially deal with the storage process at the one of inbound doors and the shipping process at the one of the outbound doors. A mathematical model for an optimal solution is derived, and genetic algorithms with two different chromosome representations are proposed. To verify performance of the GA algorithms, we compare the solutions of GAs with the optimal solutions and the best solution using randomly generated several examples.

• 유통과학연구
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• 제19권8호
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• pp.5-12
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• 2021

Purpose: The purpose of this paper is to analyze and examine the issues that are directly associated with the United States COVID-19 vaccine distribution and its strategies so that other countries may learn from it and develop sound distribution strategies. Research design, data and methodology: This paper has applied both historical and narrative models to review, identify, and analyze existing literatures to assess the United States' vaccine distribution strategy. Results: Distribution strategy developed by the United States seems to have focused heavily on the basic tenets of physical distribution, i.e., transportation, warehousing, inventory, and large-venue mass-vaccination sites, and the strategy seems to have been successful when looking only at the physical tenets of distribution. However, the analysis indicates that the distribution strategy has not either focused on or included the major activities of distribution, such as inward and outward communication, information, and customer satisfaction. Conclusions: The countries that are currently developing or implementing COVID-19 vaccine distribution strategy should review and learn from the United States' vaccine distribution strategy and its implementation. The countries should include and address all the activities of distribution, including inward and outward communication, information, and customer satisfaction to achieve their vaccination goals, minimize confusion, reduce wasting of doses and vaccine desserts, and improve vaccination rates.

• 산업경영시스템학회지
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• 제42권1호
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• pp.158-166
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• 2019

In pursuing carbon emission reduction efforts, companies have focused for the most part on reducing emissions due to the more efficient equipment and facilities. However they overlook a significant source of carbon emissions, one that is driven by operational policies. Currently companies are looking for solutions to reduce carbon emissions associated with their operations. Operational adjustments, such as modifications in order quantities could an effective way in reducing carbon emissions in the supply chain. Also, Cap-and-Trade mechanism is generally accepted as on of the most effective market-based mechanism to reduce carbon emissions. In this paper, we investigate a supply chain with single manufacturer and multiple retailers multi-product inventory model under the cap-and-trade system incorporating the carbon emissions caused by transportation and warehousing activities. Also, we provide an iterative solution algorithm and derive the common order interval and the number of intervals for each product. We show by numerical example that the inventory model incorporating cap & trade mechanism can reduce total cost and carbon emissions compared to the classical inventory model. Using the numerical examples, we also investigates different carbon price on the performance of the inventory model.

• 디지털산업정보학회논문지
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• 제15권3호
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• pp.89-100
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• 2019

Uniform and integrated college desks and chairs have low efficiency of loading for transportation and delivery and low efficiency of storage for warehousing due to their simple uniform physical properties, thus increasing logistics costs for companies and decreasing their competitiveness. In an effort to overcome the limitations of previous studies, this study analyzed the stages of logistics for desks and chairs in college lecture rooms via the transportation route including the factory warehouses and local warehouses and via the delivery route from local warehouses by the region to the orderers including college lecture rooms. The study developed a model for the rationalization of corporate logistics by making a variable folding desk and chair capable of distance adjustment according to height to replace the uniform and integrated college desks and chairs in lecture rooms. A model was developed between the old uniform and integrated college desks and chairs and the new variable folding desks and chairs for three scenarios of cost development including product storage costs, transportation costs from the specialized factory warehouses to the local warehouses by the region, and delivery costs from the local warehouses to college lecture rooms as the orderer. For the generalization of the model, it was applied to each of the 90%, 95%, and 99% service levels.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.87-92
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• 2021

Analysis of current state of construction industry functioning in Ukraine allows us to identify a number of problems having negative impact on sustainable development of construction industry, especially in terms of its organization. Therefore, it is absolutely essential to study existing methods of organization system supplying construction sites with necessary material resources. Companies can develop their own logistics departments, which independently solve logistics issues related to transportation organization and management, accounting and inventory management, acquisition and warehousing, intercommunication (ability to obtain both final and intermediate information during transporting materials). Using a complex of methods is substantiated: the hierarchy analysis method (Saati's method), the network method, the defect elimination algorithm DEA, the transportation problem that finds optimal problem solutions for construction sector with the purpose of rational supplying uninterrupted construction with building resources in the designed model "provider-transportation-costs".

• 유통과학연구
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• 제20권1호
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• pp.27-39
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• 2022

Purpose This research aims to investigate factors affecting the application of strategic management accounting in Vietnamese Logistics Enterprises. Design/Methodology/Approach: Quantitative research was conducted and data was collected by sending questionnaires to 188 accountants and directors from Vietnamese Logistics Enterprises (including, transportation, warehousing and forwarding). 5 factors (namely: size and organizational structure, technological advancement, and strategic management accounting implementing costs) were selected to measure the application of strategic management accounting (SMA) in Vietnamese Logistics Enterprises (LEs) through correlation and regression analysis. Results: The empirical findings show that there exists a significant association between these factors and the SMA application. LEs have strongly supported the application of SMA as a tool to provide information for making their strategic decisions. The factors including size and organizational structure, technological advancement, SMA implementing c osts, and strategy positively impact the SMA application in both financial and non-financial aspects. This finding helps the adm inistrators realize the importance of SMA. Conclusions: This study provided an overview of SMA application and its benefits to enterprises. It helps managers have a better understanding of SMA and future directions for application. Moreover, the research results will be useful for managers to identify factors influencing their SMA practices and improve the current management process applied in organizations.

• 한국항해항만학회지
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• 제32권1호
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• pp.97-102
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• 2008

선박의 대형화 및 해상사업의 기업화 등에 따라 해상운송에 있어 화물의 하역, 보관 등의 전문적인 부분을 담당하고 있는 항만하역업자, 항만터미널운영자, 창고업자 등 독립계약자의 역할은 점점 증대되어 가고 있는 추세이다. 하지만 국제해상운송은 해상운송인과 화주를 중심으로 체결한 운송계약을 중심으로 이루어져 왔으므로, 영국 보통법상의 직접계약관계의 원칙에 의해 계약당사자가 아닌 자는 계약상의 이익을 원용할 수 없다는 입장을 유지하여 왔다. 이에 대해 이를 완화하고자 하는 다양한 방안이 적용되고 있으며, '히말라야약관'도 그러한 방안중의 하나이다. 본 논문은 최근 대법원판결을 통해 우리나라 법원의 히말라야약관의 유효성 인정에 대한 내용을 재검토하고 독립계약자, 특히 항만터미널운영자의 운송계약상 제3자의 권리인정에 관한 문제에 대한 각국의 경향에 대해 살펴본다.