• Title/Summary/Keyword: Warehouses

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A Study on the Improvement of Energy Efficiency in Warehouses (물류센터의 에너지 효율 개선 방안에 관한 연구)

  • Sun, Jong-Keun;Ryoo, Ho-Sang
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.6
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    • pp.66-72
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    • 2012
  • The main sources of energy consumption in warehouses are MHE(Material Handling Equipment), HVAC(Heating, Ventilating and Air Conditioning) and Lighting. Warehouses in advanced countries raise energy efficiencies with energy consumption diagnosis, technology development and systematic management and improvements for MHE, HVAC and Illuminating, etc. They have managed illuminating system, air conditioning, motor driven system, air circulation method, dock facility, layout, AS/RS, conveyor system and battery management, etc. Ansong Pyeongtaek area investigation resulted that 43.9[%] of enterprises are managing partly energy consumption source. But the data resulted with not substantial management of energy consumption but passive management for only electric bill curtailment. Therefore through survey research & visiting interviews of some companies in Ansong Pyeongtaek area, we understood the status of energy consumption source management and proposed energy efficiency methods on the basis of that results.

Cross Decomposition Applied to the Intermediate Warehouse Location Problem (교차분해법을 이용한 이단계유통체계에서의 중간창고의 입지선정)

  • 차동완;정기호;허원수
    • Journal of the Korean Operations Research and Management Science Society
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    • v.9 no.2
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    • pp.3-8
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    • 1984
  • This paper considers the intermediate warehouse location problem in a two stage distribution system where commodities are delivered from the given set of capacitated factories to customers via uncapacitated intermediate warehouses. In order to determine the subset of warehouses to open which minimizes the total distribution costs including the fixed costs associated with opening warehouses, the cross decomposition method for mixed integer programming recently developed by T.J. Van Roy is used. The cross decomposition unifies Benders decomposition and Lagrangean relaxation into a single framework that involves successive solutions to a primal subproblem and a dual subproblem. In our problem model, primal subproblem turns out to be a transshipment problem and dual subproblem turns out to be an intermediate warehouse location problem with uncapacitated factories.

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A Study on the Comparison of Natural Ventilation Standards for Domestic and Foreign Logistics Warehouses (국내외 물류창고의 자연배연기준 비교에 관한 연구)

  • Kim, Yun-Seong;Choi, Yun-Ju;Huh, Ye-Rim;Kwon, Yeong-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.67-68
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    • 2022
  • Foreign countries stipulate that ventilation and smoke control facilities are installed in logistics warehouses. On the other hand, in Korea, the design guidelines and standards of ventilation and smoke control facilities for logistics warehouses are not clear even in the situation where the number of human casualties caused by smoke has increased until recently. Accordingly, the smoke descent time according to the vent was calculated. As a result, when there was no vent, the smoke descent time was 369s. On the other hand, when the vent was installed, smoke did not fall because the amount of smoke was greater than the amount of smoke generated.

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A New Method for Warehouse Location Problem (창고설치문제를 위한 새로운 해법)

  • 박순달
    • Journal of the Korean Operations Research and Management Science Society
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    • v.8 no.1
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    • pp.27-30
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    • 1983
  • The purpose of this paper is to find a new method for the warehouse location problem. Akinc and Khumatvala developed a branch and bound algorithm for a one-stage problem, that is, plants and warehouses are at the same location. This paper extends this method to a two-stage problem, that is, plants, warehouses and users are located at different sites, and further this paper allows direct flows from plants to users. The new method is tested at Perkins-Elmer. The test shows that the algorithm is efficient.

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Study on Area Calculation in Warehouse (보관시설 내 공간 산정에 관한 연구)

  • Kim, Young-Joo;Lee, Suk;Kim, Kyoung-Tae
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.1567-1573
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    • 2010
  • The purpose of this study is to develop spatial configuration and area calculation method of warehoue. This paper deals with warehouses with palletized cargo since recently pallets are widely used in many warehouses to enhance efficiency. We identify spatial configuration and characteristics of each area. To represent realistic situations, we analyze characteristics of logistics equipment as well as interview results with expert warehouse architects. Through these analysis we suggest guidelines on area calculation of warehouse.

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An Iterativ Method for Location Allocation Problem

  • Kim, Kee-Young
    • Journal of the Korean Statistical Society
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    • v.5 no.1
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    • pp.49-59
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    • 1976
  • This paper is to present an iterative method for determining an optimum geographic location pattern for the warehouses (sources) that are employed to serve or supply, known quantities of its finished product to a set of custormer areas (destinations) that have fixed and known locations, where the number of sources is permitted to vary. What must be determined, in this paper, is the number and location of the sources or warehouses that will minimize the combined costs of transferring and storing the total quantity of products demanded in the destinations or customer areas.

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Development of the Expert System for Selection of Equipment for Automated Warehouses Using Reliability Theory (신뢰성 이론을 이용한 자동창고 설비 선정 전문가 시스템 개발에 관한 연구)

  • Lee, Young-Hae;Jeong, Chang-Sik
    • Asia pacific journal of information systems
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    • v.8 no.3
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    • pp.135-145
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    • 1998
  • There exists popular approach using certainty factor (CF) for the development of effective reasoning mechanism under uncertainty in Expert System, However, there is a problem with CF. The CF values could be resulted in the opposite of given conditional probabilities. In this paper, a method for, reasoning under uncertainty using reliability theory to overcome the problem is proposed. And the proposed method is used in the development of Expert System for the selection of equipment for automated warehouses.

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Personalization of Document Warehouses: Formalization, Design and Implementation

  • Khrouf, Kais;Turki, Hela
    • International Journal of Computer Science & Network Security
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    • v.22 no.10
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    • pp.369-373
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    • 2022
  • In the decision-making domain, a document warehouse is designed to meet the analysis needs of users who may have a wide variety of analysis purposes. In this paper, we propose to integrate the preferences and interactions of users based on profiles to the concept of document warehouses. These profiles guarantee the integration of personalized documents and the collaborative recommendation of documents between different users sharing common interests.

A Study on the New Trend of The Consumption District Cold Storage Warehouse Industry in Japan - Focused on Japan Capital region - (일본 소비지 냉동냉장창고의 새로운 움직임 -수도권 냉동냉장창고를 중심으로 -)

  • Chang Hong-Seock
    • The Journal of Fisheries Business Administration
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    • v.37 no.2 s.71
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    • pp.111-139
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    • 2006
  • Cold storage warehouse industry in Japan has been extended in its scale in terms of both the number of storages and cold storage capacity in order to meet the extended reproduction of the marine products industry. However, increasing total amount of the stored goods since mid 80s led to relative decrease of marine products while the number of storages was remained the same or decreased, though cold storage capacity was gradually increased and is maintained the increase of the average cold storage capacity. As structural change in the cold storage warehouse industry emerges, cold storage warehouses require new approach to individual storage management with 1)diversity of the stored goods; 2) more competition due to increase of the cold storage capacity; and 3) sizing of the average cold storage capacity. Therefore, this study analyzed how cold storage warehouse management activity with individual storage sizing changes; and significance of sizing and functional change in cold storage warehouses experiencing sizing, by observing leading cold storage warehouse industry of the metropolitan area in Japan. In conclusion, reorganization of cold storage warehouse industry in the metropolitan area in Japan can be summarized as follows: First, competition among cold storage warehouses in the metropolitan area in Japan is not simply limited to storage industry but extended to establishment and securing physical distribution function. Second, since cold storage warehouse industry is in Scrap & Build phase, decision of management executives on whether taking direction to maintain/continue enhancement of physical distribution function may cause drastic reorganization in the cold storage warehouse industry, Third, since profit of physical distribution management based on cold storage warehouses is insignificant, it is not easy to accomplish expected management outcome, Fourth, today's cold storage warehouse industry mainly characterized by diversity of the stored goods needs facility reorganization with comprehensive and functional integration covering from F class cold storage capacity to F&C class.

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A Study on the Improvement of Field Activity for Firemen in Sandwich Panel Warehouse (샌드위치패널 창고 소방대원 현장활동 대응력 제고 방안)

  • An, Byung-Kug;Kim, Woon-Hyung;Yang, So-Jin;Ham, En-Gu
    • Journal of the Society of Disaster Information
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    • v.16 no.3
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    • pp.421-429
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    • 2020
  • Purpose: The purpose of this study is to present step-by-step countermeasures to prevent fires in sandwich panel warehouses and to enhance on-site fire response capabilities. Method: Interviews of firefighters related to fire sites, advice from fire experts, and experiments on protection performance were conducted to draw up measures for each element to strengthen on-site response capabilities. Result: The fire safety management checklist for warehouse fire safety managers and the installation standards for wall protection of sandwich panel warehouses are presented. In addition, Standard Operational Procedures(SOP) for fire application of sandwich panel warehouses were established for firefighters on-site. Conclusion: Through this study, step-by-step fire safety measures were established for preventing, protecting and suppressing fires in sandwich panel warehouses.