• Title/Summary/Keyword: Essential Facility

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Prediction of Air Movement and Temperature Distribution at Different Store Methods Using 3-D CFD Simulation in Forced-Air Cooling Facility

  • Yang, G.M.;Koh, H.K.
    • Agricultural and Biosystems Engineering
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    • v.3 no.2
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    • pp.65-72
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    • 2002
  • Temperature is the most influential environment parameter which affects the quality change of agricultural products in cold storage. Therefore, it is essential to keep the uniform temperature distribution in the storage room. This study was performed to analyze the air movement and temperature distribution in the forced recirculating cold storage facility and to simulate optimum storage method of green groceries using 3-D CFD(three dimensional computational fluid dynamics) computer simulation which applied the standard $textsc{k}$-$\varepsilon$ turbulence model and FVM(finite volume method). The simulation was validated by the experimental results for onion storage and the simulation model was used to simulate the temperature and velocity distribution in the storage room with reference to the change of storage method such as location of storage, no stores, bulk storage, and pallet storage. In case of no stores, internal airflow was circulated without stagnation and consequently air movement and temperature distribution were uniform. In case of bulk storage, air movement was stagnated so much and temperature distribution of onion was not uniform. Furthermore, the inner temperature of onion roses more than the initial temperature of storage. In case of pallet storage, air movement and temperature distribution of onion were so uniform that the danger of quality change was decreased.

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A Study on the Collecting Method of Reliability Database for Gas Facilities (가스설비의 신뢰도데이터 수집방법에 관한 연구)

  • Rhie, Kwang-Won;Yoon, Ik-Keun;Han, Sang-Tae;Oh, Sin-Kyu;Kim, Tae-Hun
    • Journal of the Korean Society of Safety
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    • v.23 no.2
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    • pp.37-44
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    • 2008
  • The safety assessment for facility industry is now being periodically performed. For the purpose of scientific safety management, QRA(Quantitative Risk Assessment) is also being performed, and reliability data of the facilities is essential to perform the assessment. Generally, the existing safety assessment is performed by using the values announced in other industry processes, which result in the drop of reliability. In order to solve this problem, there is an urgent need to establish reliability database for the facilities. The most appropriate method is to perform a direct reliability analysis towards the facilities undergoing safety assessment. In this study, in compliance with the assessment method and procedure of OREDA-2002 handbook, the facility reliability data are collected, which include the calendar time and operational time in terms of different facility items, the number of failures in terms of different failure mode, the mean, standard deviation, lower limit and upper limit of failure rate, and the failure rate. And the data process method for this special occasion is also proposed when the number of failure is 0.

The Development of Effective Database Model for Pipe Network Management Monitoring Program (상수도 관망시스템의 유지관리용 모니터링 프로그램을 위한 효율적 D/B 모델의 개발)

  • Kang, Byung-Mo;Lee, Hyun-Dong;Hong, In-Sik
    • Journal of Internet Computing and Services
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    • v.9 no.4
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    • pp.157-166
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    • 2008
  • There has been a renewal of interest in management of underground facility in recent years. As several research have been made on management for underground facility of waterworks pipe. In this paper smart-tag is defined and applied to requiring ubiquitous environment. Also, GPS is essential technology for the implementation of proposed program, which has GPS and RFID mixed business model. And it manages data of underground facility with RFID system effectively and provides the high quality practical effectiveness of entire system through GPS receiving module and network communication on GIS. In conclusion, this paper proposed applications management system with location mixed database. Proposed database and interface skill is tested and evaluated through the simulation.

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Implementation of Unit-care Welfare Facility applying a Traditional Korean House and Analysis of Interior Application Elements (한옥을 적용한 유니트형 시설의 도입과 인테리어 적용요소 분석)

  • Nam, Yun-Cheol
    • Journal of The Korean Digital Architecture Interior Association
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    • v.12 no.3
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    • pp.91-100
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    • 2012
  • This paper not only reviews recent trends and characteristics of welfare facilities, but also proposes main components such as building materials and furniture applying a traditional Korean house. This paper aims to utilize interior design and construction materials of unit-care welfare facility applying the traditional Korean house. Results are as follows. 1. The rate of the private bedroom as elderly welfare facilities is 63.1%; on the contrary, the rate of the 4-person bedroom is 63.2%. The expansion of the private bedroom is an urgent need in order to improve the quality of residences. 2. According to elderly services needs and revitalization for the traditional Korean house, it is required to implementation the unit-care facilities for the elderly and interior design for the traditional Korean house. 3. The interior design for the traditional Korean house is applied to elderly living space such as a bedroom and a living room; it is not applied to care space and management space such as a nurse station and an office occupied by employees. 4. There is no problem to construct space applying the traditional Korean house using interior products currently being sold in the domestic market. 5. Standardized mass production is essential to popularize the traditional Korean house style interior.

A Study on Efficient Operation of Cosmetic Wastewater Treatment Facility (화장품 폐수처리시설의 효율제고를 위한 처리비 영향인자에 관한 연구)

  • 장명옥;조춘구
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.25 no.1
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    • pp.89-106
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    • 1999
  • This research was undertaken to manage the waste treatment facility in cosmetic plants more effectively, The discharge and the treatment of pollutant in cosmetic plants were analyzed. And several factors which had an influential effect of the treatment cost, were found out. Effective management methods are proposed. Since average operating rate is estimated from 29% to 56%, the facility has an 44% to 71% surplus capacity. The pollutant removal rate influences highly on the treatment cost. The amount of MLSS is the factor that effects the removal rate. Chemical cost and the amount of the sludge are the influencing factors. To reduce the waste water treatment cost,-the saving of SV3O use and the management of MLSS amount are essential.

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Development of Key Performance Indicators in Ammunition Demilitarization Facility Using the Balanced Score Card (균형성과표(BSC)를 활용한 탄약 비군사화 시설의 핵심성과지표 개발)

  • Bae, Young-Min;Han, Seung-Jo
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.44 no.1
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    • pp.17-25
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    • 2021
  • Ammunition Demilitarization facility (ADF) should be set up the feasible goals and continue to operate, taking into account non-profit characteristics. However, due to the lack of performance measurement methods in ADF, which are essential to national policy at a significant cost each year, the reliability of the evaluation results can be insufficient. In this paper, the Balanced Score Card (BSC) method was applied that could be evaluated to reflect the financial and non-financial features. The relevant literature research and army regulations reflected the results of various interviews of the expert group. The extraction of success performance area in ADF was confirmed using the BSC method and the Decision Variable (DV) candidate was created to use regression for selecting the DV. Additionally, the key performance indicator was presented by verification the feasibility of content by conducting the survey of experts. The implications of this paper are as follows. First, the proposed BSC model was found to be suitable for practical use in ADF reflecting the non-profit characteristics. Second, accurate evaluation of ADF can contribute to long-term development of ADF. Finally, it can be applied to the management process of the other military sector, so it can be expected to play a role in providing basic data and spreading it to other areas.

Survey of Areas Underserved by Plastic Surgery in Japan

  • Sato, Makoto
    • Archives of Plastic Surgery
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    • v.49 no.2
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    • pp.215-220
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    • 2022
  • Background In Japan, there is a large regional disparity in plastic surgery availability. In order for plastic surgery to be widely available for all citizens, it is essential for at least one plastic surgery facility to be located in each secondary medical zone. Methods Using the Japan Society of Plastic and Reconstructive Surgery homepage and some databases, we extracted data on secondary medical zones that do not have a plastic surgery facility. The national and regional coverage rates were calculated. The coverage rate for each group divided by the degree of population concentration was also calculated. Results We found that 147 of 344 secondary medical zones did not have a plastic surgery facility, and the area coverage rate was found to be 57.27% nationwide. The coverage rate in terms of population was 87.07% (correlation coefficient of area and population coverage = 0.983). The area coverage rates in Hokkaido-Tohoku, Kanto, Chubu, Kansai, Chugoku-Shikoku, and Kyushu-Okinawa districts were 47.46, 72.15, 76.47, 62.79, 52.08, and 32.81%, respectively. The corresponding population coverage rates were 79.92, 91.62, 94.27, 90.59, 80.68, and 69.54%, respectively. The area coverage rates in metropolitan areas, provincial cities, and rural areas were 98.08, 75.90, and 15.87%, respectively. In contrast, the area coverage rate of dermatology was 62.79% and that of orthopaedics was 97.09%. Conclusion Unfortunately, it is estimated that more than 40% of secondary medical zones are underserved by plastic surgery, and 13% of the population is not able to fully benefit from this specialty in Japan.

A Study on the Actual Condition of Using Sewing Machine for Women's Wear Supplicers(I) - Focused on Possession and Idleness Circumstances - (숙녀복(淑女服) 봉제업체(縫製業體)의 봉제기기(縫製機器) 운용실태(運用實態) 연구(硏究)(I))

  • Kim, Eun-Hee;Sohn, Hee-Soon
    • Journal of Fashion Business
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    • v.2 no.2
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    • pp.46-53
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    • 1998
  • The purpose of this study is to survey and analyze the conditions and automation of sewing machines and thereby, address the problems and their solutions to help local sewn products enhance their international competitiveness. The results of study can be summarized as follows : 1. It was found that most of the sample companies were getting smaller scale or pettier in terms of capital, number of employees or scale of factory. The interest in facility investment was relatively higher, which suggests high interest of our sewing companies in facility investment. 2. Most of the sample companies were well equipped with the essential and several auxiliary sewing machines, but poorly equipped with the special or automated sewing machines. 3. The ratio of idle machines was highest in sewing work, compared with cutting or finishing work, primarily due to decreased orders, aging machines or reduced manpower.

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DEVELOPMENT OF HOT CELL FACILITIES FOR DEMONSTRATION OF ACP

  • You, Gil-Sung;Choung, Won-Myung;Ku, Jeong-Hoe;Cho, Il-Je;Kook, Dong-Hak;Park, Seong-Won
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2004.02a
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    • pp.191-204
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    • 2004
  • The research and development of effective management technologies of the spent fuels discharged from power reactors are an important and essential task of KAERI. In resent several years KAERI has focused on a project named "development and demonstration of the Advanced spent fuel Conditioning Process (ACP) in a laboratory scale." The Facility for ACP demonstration consists of two Hot Cells and auxiliary facilities. It is now in the final design stage and will be constructed in 2004. After construction of the facility the ACP equipments will be installed in Hot Cells. The ACP will be demonstrated by some simulated spent fuels first and then by spent fuels.

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A case for productivity improvement by time study in high tech industry (하이테크 부품산업에서 작업분석/실행을 통한 생산성 향상의 프로젝트 방법론 연구)

  • Lee, Won-Jae;kim, Joong-Hoi;Kang, Sung-Woo;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.17 no.1
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    • pp.225-230
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    • 2015
  • Productivity is the essential comparative advantage in high tech industry company in 21 century. These company endless endeavor for low cost production. Low cost production can be led by low facility operation cost and low labor cost. But reducing facility operation cost arise much investment. Thus many high tech company drive reduction of labor cost. These article suggest model for reducing labor cost and prove a effect by example of some company.