• 정보통신설비학회논문지
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• 제1권1호
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• pp.40-50
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• 2002

기존의 SNMP 에이전트는 컴포넌트화 되어있지 않고 코드 이동성을 제공하기 위한 프레임워크가없기 때문에 원격에서 온라인으로 에이전트의 MIB 코드를 새롭게 추가한다거나 에이전트 자체를 업그레이드하기 어려웠다. 이런 문제를 해결하기 위해서 OSGi프레임워크 상으로 다운로드 가능한 SNMP 에이전트 번들을 SNMP 메시지 처리를 위한 SNMP 에이전트 기본 번들과 관리 정보 수집을 위한 MIB번들로 나누어 설계하였으며 번들 서버가 인증을 거친 후 MIB 번들을 동적으로 업로드 할 수 있도록 하기 위하여 다운로드 서버 번들과 사용자 인증 번들을 추가하였다. 또한 네트워크 관리자가 장치에 탑재되어 있는 MIB 번들의 상태 정보를 모니터링할 수 있도록 하기 위하여 MB-MIB를 설계하였다. 본 논문에서 설계한 OSGi 기반 SNMP 에이전트 번들을 사용함으로써, 관리자는 원격에서 온라인으로 관리하고자 하는 MIB 모듈과 SNMP 에이전트 기본 모듈을 업그레이드시킬 수 있으므로 다변화하는 대규모 네트워크를 관리하는 시간과 비용을 줄일 수 있다.

• 한국전기전자재료학회논문지
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• 제36권6호
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• pp.598-602
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• 2023

With the purpose of instilling an awareness of the safety of users of electrical equipment and inducing voluntary facility improvement through the safety rating system for general low voltage electrical equipment, simulation and field application of the safety rating of general low voltage electrical equipment were conducted. For the introduction and application of the safety rating system for general low-voltage electrical equipment, data related to domestic safety was investigated and analyzed, cases of introduction in other fields were reviewed, and for design, the 4M risk assessment method of the Korea Occupational Safety and Health Agency and the cases of safety index development in Korea were analyzed and standardized. Safety rating system simulations were conducted for general low-voltage electrical equipment, and problem improvement measures were prepared by analyzing the results through on-site verification and simulation applied to the initial design. Design standards for the introduction of the safety rating system for general low-voltage electrical equipment were prepared, and 394 youth training facilities were applied to the field to see if the design standards were practically applicable to the field. With the application of the safety rating system for low-voltage electrical equipment for general use, youth training facilities that had been classified as 'appropriate' were able to induce an upgrade to a higher level through voluntary facility improvement according to the application of grades (A to E). As a result of inducing voluntary repair projects based on the results of the 1st and 2nd inspection of youth training facilities, it was confirmed that 86 facilities received grade A, 225 facilities received grade B, and only 311 facilities received grade A to B out of a total of 394 facilities, and there was no grade E.

• 한국건설관리학회논문집
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• 제9권3호
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• pp.108-117
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• 2008

최근 유통시설물 공사의 증가와 함께 발주처와 시공사간의 불확실성 요인에 따른 공사비 계약 및 정산방식에 있어서 분쟁의 소지가 많이 제기되고 있다. 이에 초기 착공 시 공사비에 대한 명확한 검증기준이 마련되어야 하며, 저가 공사수주로 인한 공기지연, 품질저하 등을 미연에 예방할 수 있는 적정공사비 추정이 가능해야 할 것이다. 이와 같은 관점에서 본 연구에서는 대형 유통시설물의 공사비 예측을 통한 초기 투자비 분석 및 공사 진행시 발주자와 시공사간의 원만한 공사 진행을 위해 국내 유통시설물 관련 15개 현장의 실적공사비를 조사 분석하여 공법 및 공간, 면적별 적정공사비를 산출하였으며, 이를 근거로 신규 프로젝트 진행시 초기 기획 설계단계에서 부터 타당성 조사를 위한 예측공사비 분석을 통하여 유통시설물 사업의 적정성 여부를 결정하는 수단으로 활용될 수 있는 자료를 제시하고자 하였다.

• Nuclear Engineering and Technology
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• 제41권5호
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• pp.747-752
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• 2009

A vulnerability assessment is essential for the efficient operation of a physical protection system (PPS). Previous assessment codes have used a simple model called an adversary sequence diagram. In this study, the use of a two-dimensional (2D) map of a facility as a model for a PPS is suggested as an alternative approach. The analysis of a 2D model, however, consumes a lot of time. Accordingly, a generalized heuristic algorithm has been applied to address this issue. The proposed assessment method was implemented to a computer code; Systematic Analysis of physical Protection Effectiveness (SAPE). This code was applied to a variety of facilities and evaluated for feasibility by applying it to various facilities. To help upgrade a PPS, a sensitivity analysis of all protection elements along a chosen path is proposed. SAPE will help to accurately and intuitively assess a PPS.

• 한국전기전자재료학회논문지
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• 제23권8호
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• pp.645-650
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• 2010

The continuous increase demand for electric power leads to the additional construction of transmission facilities, but it is not easy to acquire right-of-way for transmission facilities. Therefor, there is a need for compact tower that can be built on a narrow right-of-way the compact tower with polymer insulation arm is a solution. It can be upgrading conventional 154 kV transmission line voltages to 345 kV levels. However transmission voltage is increasing, environment interference (corona noise, radio interference, etc.) will occur gradually. This environment interference is depending on the electrical clearances of tower and configuration of conductors. Therefore the analysis of the factors of environmental interference is necessary in order to upgrading transmission voltage. This paper presents the design factor of a compact tower to meet the environmental interference standard.

• 교육시설 논문지
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• 제19권4호
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• pp.29-38
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• 2012

Recently large scale earthquake s are occurred around the world following the damage of buildings. So the interest of preparing for earthquake seismic design and seismic performance has becoming high. School buildings are though used for educational purpose; they are also used as emergency shelter for local residents during earthquake disaster. However, the current seismic design ratio of our country (Korea) is 3.7% and if massive earthquake is occurred it follows a serious damage. In order to overcome this situation, seismic performance evaluation is carried out for existing school building and an accurate and appropriate seismic retrofit is required based on performance evaluation to upgrade the existing school buildings. In this paper, nonlinear static analysis on existing school buildings for ATC-40 and FEMA-356 are carried out using the capacity spectrum method to evaluate seismic performance and to determine the need for retrofitting. In addition, after reinforcement to verify the effect of retrofit enhance the seismic performance is applied the seismic performance evaluation is carried out to verify the effect of seismic retrofit time history analysis using nonlinear dynamic analysis is also performed and nonlinear behavior of earthquake load of seismic retrofit of structures was also investigated.

• 한국식품저장유통학회지
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• 제3권1호
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• pp.61-75
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• 1996

Apple is most favorable fruit in Korea, and apple farmland has been increased before and after the agreements of Uruguay Round and apple is considered as one of strategic agricultural products. Especially expansion of apple farmland is concentrated in Kyungpook region because of the suitable climate and its market share is about 70 percents in 1992. The marketing channels of apples of Kyungpook region are widely classified by merchant, agricultural or horticultural co-op and large scale farmer's. Among them market share of merchant's occupy over 65 percent. In marketing margins, commercial profit is higher than cost in total marketing margins and, assembler and retailer's margin is not less than wholesaler's. The fluctuation of the price of apple is high in year. The marketing problems of apples are several, first, complex marketing channels, secondly, the high percentage of market share by growing district assembler, thirdly, low rate of package and quality standardization, finally, concentration of shipment of apple because of the shortage of apple processing, storage and marketing facilities, of newly produced apples. In conclusion, to increase apple grower's income with the stabilization of supply and quality upgrade, the improvement measures of marketing system are as follows, first, government level's support in marketing facilities and mechanism, secondly, the increment of supply by grower's cooperatives, thirdly, the establishment of a serious of marketing system to increase the efficiency, fourthly, the establishment of cold-chain system and quality standardization of apple, finally, production of various kinds of apple processing goods.

• 상하수도학회지
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• 제32권6호
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• pp.517-526
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• 2018

Climate adaptation strategies for water utilities including 16 water treatment plants(WTPs) in Jeju were investigated. Drought, heat wave, and heavy rain were among the most significant climate factors affecting water utilities in Jeju. Heat wave increases water temperature, which in turn increases the concentration of algae, color, and odor materials. Some adaption strategies for the heat wave can be strengthening water monitoring and introducing advanced water treatments. Heavy rain increases raw water turbidity in surface water. The 7 WTPs that take raw water from streams or springs had a maximum turbidity of less than 50 NTU under heavy rain. However, due to concerns of turbidity spike in treated water, some WTPs discontinued intaking raw water when raw water turbidity increased more than 2 NTU. They instead received treated water from other WTPs which took groundwater for water supply. This happens because of the low skills of employees. Thus, there needs to be an increase in operator competency and upgrade of water facilities for the adaption of heavy rain. To improve adaption for the drought, there should be an increase in the capacity of intake facilities of surface water as well as a decrease in water loss. In addition, water consumption per person should be decreased.

• 대한안전경영과학회지
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• 제15권2호
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• pp.135-141
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• 2013

As the country's elderly people who are 65 years or older recently exceeded 10% of the total population with development of medical technology and improvement of living standards, Korea has turned into an aging society. Especially in Gyeonggi-do, as of late December 2012, elderly people who were 65 years or older were 1,135,242 persons, taking up 18.98% of the region's population and registering the largest number of elderly people in the nation's cities or provinces. Due to such a sharp rise in elderly population, support for the elderly is increasing the burden on families and communities. The study aims to take as its subjects elderly people staying at authorized elderly welfare facilities, who are weak in mind and body and have difficulty in daily life with disabilities, or adult day care facilities that take care of elderly people during the day or at night, examine the concept of adult day care facilities and instances in foreign countries, and study the status of the adult day care facilities located in Gyeonggi-do, their services, and safety by figuring out space arrangement based on program implementation. Spacial arrangement in program operation should satisfy fuction and purpose from the manager and user's perspective, and a desirable program operation should provide separate spaces for the elderly with Alzheimer's and those without Alzheimer's. Compared to residential care facilities, adult day care facilities incur less financial burden and, compared to other authorized services, have many right functions that can upgrade the quality of users and satisfy their desires. Major countries like Japan, the UK, and Sweden recognize the right functions of day and night care services and aggressively support and utilize adult day care facilities. For adult day care facilities, quality services should be developed and use and choices should be enhanced as regards services. Development of special programs for the elderly with dementia and stroke, instead of simple protective functions of a program, must be actively promoted, while manpower training is required for program operation, conveniences, and safety. By developing and providing space arrangement models that focus on efficiency, convenience, and safety of program operation, adult day care operation can be revitalized, while quality of elderly care may be enhanced and welfare budget can be saved.

• 한국실내디자인학회논문집
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• 제4호
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• pp.37-44
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• 1995

Nowdays there needs a lot of nursery facilities for the women those who work. Whit the government promotion policy the quantity of those are progressive. The aim of this study is to upgrade the quality of the nursery with suggesting the architectural interior design criteriors. The criteriors are based on three important points that are children's emotion, body scale and especially their safety. Color, furniture style and qtmosphere are concern-ing about the first. The size of the furniture, urinal and window height etc. are abduy the second. Stair, handrail interval etc. are about the last. I hope that these criteriors will help those who want to design nursery and those children who use the build-ings.