• 한국조리학회지
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• 제12권1호
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• pp.188-202
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• 2006

With large corporations entering into the foodservice market, competitions among those foodservice providers became intense, leading to differentiated quality services in terms of portioning out the meal, its portion and waiting time, not to mention food quality. The purpose of providing foodservice is to satisfy its customers, to secure optimum level of profits, and attain continuous quality improvement. To have such purpose attained, all other factors affecting the foodservice should be allowed to play a role. The intensity of the work performed by the employees should be maintained at a steady level and systematically controlled. 'Service First’ principles upholding that customer satisfaction comes from good service should be applied at all times; customer satisfaction comes from the satisfaction of the employees. Customer satisfaction through good service will contribute to an increase in revenue which we get by subtracting operating expenses from the total sales, as it will lead to concluding a long-term supply contract or renewing the existing contract. To keep the operating expenses to the minimum level, it is important to effectively perform the cost control. Since personnel expenses occupy a large portion of the operating expenses, it is imperative to effectively control the labor costs. For this reason, this study will present an effective program for disposition of men with a large organization being centered around, where the number of people served at the mess hall varies greatly depending on a day of the week and a mealtime of the day.

• 한국건설관리학회논문집
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• 제4권4호
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• pp.212-219
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• 2003

건설공사에서 공사비 계획 및 관리를 위한 코스트 모델은 공사입찰$\cdot$계약단계에서 도급공사비 결정에 중요한 기능을 담당할 뿐만 아니라 건설사업 수행 전 단계에 걸쳐 건설공사에 소요될 비용을 추적, 관리하여 주어진 예산범위 내에서 최적의 목적물을 설계 시공하여 궁극적으로 발주자의 투자비용에 대한 가치를 극대화하고 비용관리업무의 적정성을 도모하는 기능을 담당하고 있다. 그동안 내역입찰방식을 널리 채택하고 있는 건설공사에서 내역서는 공사비 예측 및 계획 등 공사관리에 있어서 중요한 수단으로 활용하여 왔으나, 현행 내역모델은 공사비의 예측 및 비용관리 측면에서 지나치게 상세하며, 공사계획 및 관리 업무와 연계시키는데도 한계가 있는 것으로 지적되고 있다. 건설공사를 구성하는 세부 단위작업에 소요되는 비용은 모두 중요한 관리대상이지만, 단위작업의 내용에 따라 비용이 차지하는 비중과 코스트 결정에 미치는 영향력에는 차이가 있다. 이러한 비용결정의 구조적 메커니즘에 착안하여 본 연구에서는 건설공사 비용결정에 중요한 영향을 미치는 작업내용을 규명하여 정확성을 유지하면서 단순 간결한 코스트 예측모델을 제안 및 검증하는 것을 목적으로 하고 있다.

• 한국컴퓨터정보학회논문지
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• 제27권5호
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• pp.127-138
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• 2022

본 논문에서는 금융권 DID(Decentralized Identity) 서비스 체계의 표준 방식을 준수하는 가운데 체계적인 검증 방식을 통하여 개인 정보나 자격 증명을 유연하게 제어할 수 있는 블록체인 기반의 DID 서비스인 FinDID(Financial Decentralized IDentity)를 제시한다. DID는 특정 인증기관 없이 탈중앙화 환경에서 활용하는 신원 관리 체계이며, 사용자가 자신의 정보를 제어할 수 있는 기술로서 사용자 자신의 개인정보에 대한 자기 주권화를 실현할 수 있다. FinDID을 통하여 사용자는 자신의 여러 개인정보를 인증하는 크리덴셜을 발급자에게 발급받아 개인 전자지갑을 이용해 타겟금융 서비스가 필수적으로 요구하는 클레임만을 크리덴셜에서 선택하여 프레젠테이션을 생성하고, 이를 금융 서비스에게 제출하여 자신의 서비스 이용자격을 부여받는다. FinDID는 전자지갑, 크리덴셜 발급자, 크리덴셜 저장소 그리고 DID 관리 컨트랙트 및 크리덴셜 관리 컨트랙트를 포함하는 DID 서비스 및 이러한 서비스 체계를 이용하는 금융서비스로 구성된다. DID 서비스는 각 사용자의 DID를 관리하고 관련된 신원 관리체계의 모든 검증과정을 지원한다.

• 전기학회논문지
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• 제62권3호
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• pp.342-348
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• 2013

It proposes an efficient control algorithm to increase electric power transmission efficiency between photovoltaic power generating system and the grid. The main controller finds a maximum efficiency condition by considering the quantity of power generated from PV arrays, the number of inverters, and efficiency of PV inverter. According to the condition, a relay board arranges a point of contract of PV arrays. By the disposition of PV arrays, it assigns the optimized power on each PV inverter. Operational principle of the proposed maximum efficiency point tracking algorithm is given in detail. To verify the validity of the proposed approach, computer-aided simulation and experiment carried out.

• 한국전자파학회:학술대회논문집
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• 한국전자파학회 1999년도 제3회 전자장의 생체영향에 관한 워크숍
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• pp.173-186
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• 1999

Several epidemiological studies have suggested that residential or occupational exposure to power frequency magnetic fields (MF) might increase the risk of cancer. The objective of this study is to elucidate the possible carcinogenic effects of MF exposure using female Sprague-Dawley (Crj:CD)rats. A total of 360rats was randomly divided into 6 groups of 60 rats each. Two groups were served as a negative control (vehicle: sesame oil only) or a positive control (single oral administration of 7, 12dimethylbenz(a)anthracene; DMBA, 90mg/kg body weight at 50-52days of age). Other four groups were simultaneously exposed to 0 (sham-exposed) 7, 70 or 350 $\mu$T(rms), continuous circularly polarized 50HzMF, 22 hrs/day, 7 days/weeks for 30weeks from 8weeks of age. Experiment was conducted under SPF condition and in a blinded manner, Ten animals in each grout were served as satellite animals and their several hormonal concentrations in sera, such as melatonin and prolactin, collected at the midnight were measured. In addition, complete histopathological examination were performed in other 50 animals per each group. In the positive control group, the first mammary nodule was palpated at the 7th weeks of experiment in 5 out of 59 animals. Afterward, the incidence of palpable mammary nodules increased steadily and reached at 76% and 98% of live animals at 14weeks and the end of experiment in sham and 350$\mu$ T-exposed groups were not significantly different from those in the sham-exposed and negative control groups. Histopathologocally, most of palpable nodules were mammary tumors. The incidences of animals with mammary tumors per animals survived ant the end of experiment were 4.1 and 100% in the negative and positive control groups, and 0.0, 6.0, 8.0 and 6.0% in the sham-, 7, 70and 350 $\mu$T-exposed groups, respectively. These incidences in three MF-exposed groups were not significantly different from those in both the sham- exposed and negative control groups. Based on these results, it was not supported that continuous circularly polarized 50 Hz magnetic fields at up to 350$\mu$T affect the incidence of spontaneous mammary tumors in female SD rats under the present experimental conditions.

• 생물환경조절학회지
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• 제5권2호
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• pp.174-186
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• 1996

This study was carried out in order to understand the plan, design, constructing and actual condition of management of modernized horticultural facilities in Kyungpook Province which had been constructed from 1992 to 1995 funded by Government support. The aim of this study is to provide reference data for success of the forth project. It was performed by making up a question about driving of project and management condition of equipment after constructing. The results obtained from this study are as follows: 1. 73.5% of facilities horticulture farmhouse recognized that the prospect of greenhouse is bright, but 92.5% of the farmhouse also recognised that they need technical consultation on protected horticulture farming. Therefore, technical educations would must be enhanced about foundation of greenhouse and cultivation technique. 2. The holding times of explanatory meetings, cause of understanding to farmhouse, were one or two times in greenhouse construction, and 62.5% of the farmhouse expressed the insufficiency at the explanation and educational data. For this reason, it was judged that the construction contract had been delayed more than 5 months in 49.3% of the farmhouse after the decision of project budget. 3. In constructing after a contract, the rates of construction delay is 53.4% and defect occurrence is 41.1%. The biggest reasons of construction delay was insufficiency of worker and materials supply. Each percentage is 29.1%. And the reason of defect occurrence is badness of machinery equipment(62.9% ). 4. In management of greenhouse, a pipe-constructed plastic film greenhouse changes plastic film every one and three years because of sticking dust on plastic film. It was needed to about in cleaning technique of coverings. Because that used 3-5 years only half of the expected life span. 5. The order of broken rating in the subsidiary equipment is like this lollop ventilator (42.8%), a general control system(33.3%) especially, in the case of a general control system, the rate of all family can control is 52.7%. so, it is time to develop easy control equipment which every one could use as soon as possible. 6. When choose heat generator as decide capacity, the most priority is the mount of heat generator the percent is 45.5% heat generator and as decide model, the private purchase's percent is 77.3%. It is higher than a public bidding heat generator the percent is 22.7% heat generator when it compare with a public bidding. In the case of $CO_2$ generator, using rate is only 19.0%. The using rate is very low, so it needs education how to use depends on the way of the subsidiary equipment. 7. In the case of seedlings, it is asked to use factory-processed seedling effectively. because it's difficult to get security of labors(58.8%), hoped crops (55.9%) access same crops(29.4%) much more and changing of crops depends on market situation. that is the main reason the lack of knowhow.

• 조명전기설비학회논문지
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• 제21권8호
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• pp.81-86
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• 2007

본 연구에서는 현 직접부하제어사업의 실태 및 문제점을 도출하고 국내 실정에 맞는 직접부하제어 활용 및 개선을 위하여 직접부하제어 사업 계약자를 대상으로 제도 개선사항, 지원금액 개선사항 및 제도 실시 등에 대한 설문조사를 하였다. 대표적으로 개선되어야 할 방안으로는 직접부하제어사업 참여 업체 증가를 위하여 기본지원금 및 제어지원금의 검토 방안과 소비자의 의견을 반영한 수요측 입찰 실시 방안이 필요하며, 시장운영과 계통운영에 있어서 페널티, 차단시간, 차단 횟수, 통보시간, 계약기간 등에 대한 기준을 정립할 필요가 있음을 확인하였다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.350-355
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• 2011

This paper gives an overview and developing status of the on-board Automatic Train Control (ATC) System employed to control the Urban Maglev vehicle in Korea. In the construction of demonstration line for Urban Maglev Program, the Daewoo Engineering Company (DEC) has participated as a supplier of the whole ATC System since 2009. According to the contract with Korea Rail Network Authority, DEC is under progress for the development of the whole ATC system including Safety Integration Level (SIL) assessment from the ISA, which is followed by the international standards IEC62278, IEC62279, and EN50129. Once the Urban Maglev Program is completed successfully in 2013, the developed system will be the first localized whole ATC system which has SIL assessment and commercial operation experience in Korea.

• 대한임상전기생리학회지
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• 제4권1호
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• pp.39-47
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• 2006

Functional Electrical Stimulation(FES) cause paralysed muscles to contract in some clinical circumstances. Generally, FES has been thought of as a valuable tool in activating any skeletal muscle paralysed as a result of upper motor neuron damage. But, the function of cardiac and smooth muscle is also affected by upper motor neuron damage. Today, various applications of FES are investigated, including conditioning cardiovascular exercise, caugh and breathing assistant, improving bowel and bladder control, hand grasp, standing and walking etc. This review will focus on the literature reporting application of FES to control respiratory capabilities and internal organ function as well as increase muscular strength, hand grasp, standing and walking in patients with upper motor diseases.

• 산업경영시스템학회지
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• 제35권3호
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• pp.163-172
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• 2012

Regarding project management, many organizations have developed and distributed general project management knowledge systems, and application fields use the knowledge systems to apply the process suitable for characteristics of a project. This study suggests project management process models to apply to system integration projects. This system integration project management process model is composed of six top processes of initiation, preparation for contract, planning, implementation management, coordination and control, and termination and transfer. The five processes are re-divided into 25 bottom processes. These processes are expressed as input, control, output, and mechanism by using the IDEF0 model. For this model development, it has chosen the items which constituted a process through a questionnaire of experts.