• Journal of Radiation Protection and Research
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• 제15권2호
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• pp.113-122
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• 1990

원자력병원에 설치된 MC-50 의학용 싸이클로트론은 4년간의 장비 도입 계획, 장비 인수 및 설치 그리고 빔 특성조사를 거쳐서 1986년 11월부터 가동을 시작하였다. MC-50 싸이클로트론은 현재 중성자치료 및 방사성 동위원소 생산에 이용되고 있다. 1989년 12월 현재, 중성자선 치료는 총 179명(1852 sessions)의 환자에서 시행되었다. 핵의학 분야에 이용되는 방사성 동위원소의 생산은 표적운반, 표적용융, 빔 진단 그리고 화학적 처리과정에 관한 문제들을 해결하기 위한 다각적인 연구를 거친 후 1989년 3월부터 시작하였다. 이 논문은 중성자 치료와 동위원소 생산에 이용된 MC-50 싸이클로트론의 운영 현황 및 장비의 특성에 대하여 기술하였으며, 또한 1989년도의 운영결과 및 제반 문제점들을 요약하였다. 1989년도 총 운전시간은 1252.5시간이었으며 이 중 중성자 치료에 400시간을 이용하였다(599 sessions). 동위원소 생산에는 832.5시간을 이용하여 총 1695mCi(Ga-67 : 1478mCi, Tl-201 : 107 mCi, I-123 : 25mCi, In-111 : 85mCi)를생산하였다. 빔 특성실험 및 기타 연구에는 20시간을 이용하였다. 1989년도의 가동율은 88.2%이었으며 전년도의 71.0%에 비하여 현저히 향상되었다.

• 한국컴퓨터정보학회논문지
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• 제15권6호
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• pp.37-48
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• 2010

일반적으로 HTTP 프로토콜은 클라이언트의 요청에 따라 서버가 응답하는 형태로 정보를 제공한다. 이러한 방식은 서버가 능동적으로 정보를 제공할 수 없기 때문에 급변하는 정보를 효과적으로 제공하기 어렵다. HTTP 프로토콜의 이러한 단점을 극복하기 위하여 등장한 Server Push 기술은 클라이언트의 명시적인 요청이 없이도 서버가 클라이언트에게 변경된 정보를 능동적으로 제공할 수 있도록 한다. Adobe BlazeDS는 Push 서비스를 지원하는 웹 서버로서 이를 확장하여 웹 기반의 Push 어플리케이션을 개발할 수 있다. 하지만, BlazeDS는 여러 유형의 사용자들에 따라 푸시될 정보를 수정하는 필터링 기능의 부재로 다양한 상황을 효과적으로 처리할 수 있는 Push 서비스를 개발하는데 많은 어려움이 따른다. 본 논문에서는 BlazeDS 기반의 Push 서비스를 효과적으로 개발할 수 있도록 BlazeDS에 메시지 필터링 기능을 추가하고 이를 활용하는 방법을 제시한다. BlazeDS에 추가되는 메시지 필터링 기능은 사용자의 요청에 따라 푸시될 정보를 수정하고 각 정보들을 요청한 사용자들에게 전송한다. 메시지 필터링 기능이 지원되는 BlazeDS는 다양한 사용자들의 개별적인 상황에 따라 맞춤형 정보를 지원하는 Push 서비스를 손쉽게 개발할 수 있는 환경을 제공한다.

• 한국실내디자인학회논문집
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• 제25권1호
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• pp.142-150
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• 2016

This study examined the general housing awareness and awareness on house sharing of college students who are present residents as well as potential residents of shared houses. To achieve this purpose, structured questionnaires were used as a survey tool to understand students' awareness on housing and opinions on house sharing including a range of space sharing, preferences on house mates, and demands on services and facilities. The survey was conducted of college students in Busan, and the data were analyzed by the PASW Statistics 18.0 program. The findings of this study are as follows: 1) The housing awareness was categorized into seven factors by factor analysis. The subjects valued 'personality factor' in the housing awareness. 2) Regarding preference of house mate type, participants preferred a person who has similar lifestyle and in the same gender. 3) As for the space sharing, the subjects didn't want to share a bathroom and shower. Also, they preferred medium or large scale dormitory layout type to small sized apartment type. 4) The most positive aspect of house sharing was 'Reduction of rental and maintenance cost'. On the other hand, 'Difference of daily life pattern' was the most negative aspect of house sharing. 5) In case of services and community spaces, they preferred 'delivery storage service' and 'coin-operated laundry facility'.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.821-827
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• 2001

As one of the advanced design features of the Korea next generation reactor, direct vessel injection (DVI) system is being considered instead of conventional cold leg injection (CLl) system. It is known that the DVI system greatly enhances the reliability of the emergency core cooling (ECC) system. However, there is still a dispute on its performance in terms of water delivery to the reactor core during the reflood period of a large-break loss-of-coolant accident (LOCA). Thus, experimental validation is under progress. In this paper, a new scaling method, using time and velocity reduced linear scaling law, is suggested for the design of a scaled-down experimental facility to investigate the direct ECC bypass phenomena in PWR downcomer.

• 한국전산구조공학회논문집
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• 제22권2호
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• pp.163-172
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• 2009

3차원 패러매트릭 기반 솔리드모델링 방법으로 형상을 표현하고 건설산업분야에서 요구되는 다양한 정보를 처리할 수 있는 BIM기술은 2차원 도면의 자동생성, 건축요소들간의 간섭검토와 물량산출 이외에도 건물내 외 공간분석 및 관리, 구조해석 및 설계, 에너지 분석, 즉시조달, 시설물 및 재난 관리, 법규검토 등을 위한 고급 엔지니어링 업무까지 지원할 수 있게 한다. 본 논분은 이러한 IFC기반 BIM 기술을 건설분야의 각 임무에 작용하기 위하여 근원이 되는 각 건물요소의 기하형상을 추출하기 위한 연구내용을 제시하고 구현된 프로그램에 의한 적용사례를 보여준다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제19권4호
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• pp.19-28
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• 2013

Purpose: The purpose of this study to assess long-term care facilities in Seoul and certificate Seoul-type elderly care facilities. After certification, Seoul city can provide certificated facilities with budget and support to improve service quality. Methods: Questionnaires to elderly care facilities experts and field surveys to facilities in Seoul have been conducted for the data collection. Results: The result of this study can be summarized into three points. The first one is that a direction of operation for Seoul-type elderly care facilities is to improve manpower and provide special program for enforcing quality assurance. The second one is that this study provide index of evaluation for Seoul-type elderly care facilities. The indexes include management, facility environment and safety, service delivery process, and service results. The third one is that management plan for this policy should be carried out. The management plan include demonstration project, opinion research. Implications: Seoul-type elderly care facilities can have positive effects on quality of service. For the introduction of this policy, Seoul city and autonomous Gu have to make careful preparations for this policy.

• 한국농촌건축학회논문집
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• 제17권1호
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• pp.1-8
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• 2015

The purpose of this study is to consider activation methods of traditional markets in Jinju city through questionnaire and field survey. Research framework is summarized into two categories: physical environment and operation program. The results are as follows: 1) the gross profit on sales has been decreased continuously and the main causes of that have been recognized as insufficiency of parking lots and convenient facilities and deterioration of environment in spite of facilities modernization project; 2) consumers visited a traditional market because of proper price and reliance on goods, etc. However, they were not satisfied with the physical environment such as parking lots and resting spaces and the operation program such as cultural event and performance. In conclusion it was thought that activation methods of traditional market would be related to the improvement plan in the physical aspect such as parking lots, walkway, convenient and crime prevention facilities and in the operation program aspect such as cultural event, marketing, management consulting, information infrastructure, and delivery system.

• 한국보건간호학회지
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• 제24권1호
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• pp.5-18
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• 2010

Purpose: The purpose of this study is to understand nurses' perception of visiting nursing services of long-term care insurance. Method: The descriptive survey study involved 188 nurses selected by the convenient sampling of visiting nurses who participated in professional education sessions. Results: Of the 188 participants, 149 (79.3%) were aware of long-term care insurance. Awareness of aspects of long-term care services was 78.7% for facility service, 77.7% for ordinary visiting care service, 85.1% for visiting nursing service and 77.7% for visiting bathing service. Concerning visiting nursing service provision, the majority of the study subjects considered nurse-aid not to be the appropriate route for delivery of services including nasogastric tube exchange, tracheostomy tube management and stitch removal. Conclusion: Continuous evaluation and research on the standards and requirements of the nursing workforce is needed to secure and maintain the high quality of visiting nursing services. Exhaustive studies concerning task division and workforce separation according to nursing services type and level of difficulty should be done to develop the appropriate job description for visiting nursing service staff.

• 산업경영시스템학회지
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• 제6권8호
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• pp.63-71
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• 1983

Aggregate planning coordinate the control variable over long-term to apply a demand variable and forcasting. In order to necessary the goal that doesn't make an inter-contradiction and explicitly defined. We made a considerable point of system approach for scheduling establishment. It include the control variables of aggregate planning : 1) employment 2) over time working and idle time 3) inventory 4) delivery delay S) subcontract 61 long - term facility capacity. Each variables composed of pure strategy as like a decision of inventory level, a change of employment level, etc. md alternative costs make a computation on the economic foundation. But the optimum alternative costs represent the mixed pure strategy. The faults of this method doesn't optimum guarantee a special scheduling as well as increasing a number of alternative combination. Theoretical, Linear Decision Rule make an including all variables, but it is almost impossible for this model to develope actually And also make use of the aggregate planning problem for developing system approach : LDR, heuristic model, Search Decision Rule, all kind of computers, simulation. But these models are very complex, each variables get an extremely inter-dependence. So this study be remained by theory level, some approach methods has not been brought the optimum solution to apply in every cases.

• 한국CDE학회논문집
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• 제19권3호
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• pp.214-223
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• 2014

This paper presents a bottleneck detection framework using simulation approach in a wafer FAB (Fabrication). In a semiconductor manufacturing industry, wafer FAB facility contains various equipment and dozens kinds of wafer products. The wafer FAB has many characteristics, such as re-entrant processing flow, batch tools. The performance of a complex manufacturing system (i.e. semiconductor wafer FAB) is mainly decided by a bottleneck. This paper defines the problem of a bottleneck process and propose a simulation based framework for bottleneck detection. The bottleneck is not the viewpoint of a machine, but the viewpoint of a step with the highest WIP in its upstream buffer and severe fluctuation. In this paper, focus on the classification of bottleneck steps and then verify the steps are not in a starvation state in last, regardless of dispatching rules. By the proposed framework of this paper, the performance of a wafer FAB is improved in on-time delivery and the mean of minimum of cycle time.