• 대한방사선치료학회지
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• 제24권2호
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• pp.183-188
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• 2012

목 적: 암치료 기술의 발전으로 환자의 생존기간이 길어짐에 따라 치료 이후 삶의 질을 증진하고 치료 방법에 의한 부작용을 줄이는 노력에 관심이 집중되고 있다. 본 연구는 유방암 접선조사 치료에서 치료방법 차이가 반대쪽 유방 산란 선량에 미치는 영향을 분석하고자 하였다. 대상 및 방법: 본원에서 제작한 유방 모형 팬텀의 전산화 단층 영상을 이용하여 이클립스 10.0 (Eclipse 10.0, Varian, USA) 치료계획 시스템을 사용하여 $30^{\circ}$ wedge plan, $15^{\circ}$ wedge plan, $30^{\circ}$ EDW (Enhanced dynamic wedge) plan, Non-wedge plan, FIF(Field in Field) plan을 수립하였다. 각 치료계획은 선형가속기 CL-6EX (VARIAN, USA)를 이용하여 400 cGy씩 조사하였고 팬텀의 중심점으로부터 횡축방향으로 1 cm, 3 cm, 5 cm, 9 cm 씩 이동한 지점의 1 cm 깊이에서 전리조(FC 65G, IBA)를 이용하여 내측접선(Medial tangential) 조사와 외측접선(Lateral tangential) 조사에서 발생하는 산란선량을 각각 측정하고 비교 분석하였다. 결 과: 반대쪽 유방 산란 선량을 평가해보았을 때 $30^{\circ}$ wedge plan, $15^{\circ}$ wedge plan, $30^{\circ}$ EDW (Enhanced dynamic wedge) plan, Non-wedge plan, FiF (Field in Field) plan에서 처방선량에 대해 각각 6.55%, 4.72%, 2.79%, 2.33%, 1.87%로 나타났다. 내측접선조사와 외측접선 조사로 나누어 보았을 때 내측접선 조사 측정값은 각각 4.94%, 3.33%, 1.55%, 1.17%, 0.77%로 나타났고 외측접선 조사는 각각 1.61%, 1.40%, 1.24%, 1.16%, 1.10%의 산란 선량이 측정되었다. 결 론: 유방암 접선 조사 치료방법 중 반대쪽 유방에 가장 적은 산란 선량이 발생하는 방법은 FiF plan으로 이때 발생한 산란선량은 팬텀 내에서 기인한 선량이 주로 작용하는 것으로 판단되었다. 가장 많은 산란 선량이 발생하는 치료방법은 $30^{\circ}$ wedge plan이었고 쐐기필터를 비롯한 치료 장비에서 기인한 선량은 3.3%로 평가되었다. 치료계획 시스템은 처방선량에 대해 상대적으로 낮은 산란 선량 영역은 정확성이 떨어지는 것으로 나타났다. 치료 조사야 밖으로 발생하는 산란 선량은 처방 선량에 비해 그 양이 적지만 2차 암 발생 확률과 관련이 있다는 점에서 간과할 수 없는 부분이며 방사선 치료를 결정하는데 있어 고려되어야 할 부분으로 사료된다.

• 대한안전경영과학회지
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• 제17권1호
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• pp.119-124
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• 2015

According as radiation therapy technique develops, standardization of radiation therapy has been complicated by the plan QA(Quality Assurance). However, plan QA tools are two type, OADT (opposite accumulation dose tool) and 3DADT (3 dimensional accumulation dose tool). OADT is not applied to evaluation of beam path. Therefore tolerance error of beam path will establish measurement value at OADT. Plan is six beam path, five irradiation field at each beam path. And beam path error is 0 degree, 0.2 degree, 0.4 degree, 0.6 degree, 0.6 degree, 0.8 degree. Plan QA accomplishes at OADT, 3DADT. The more path error increases, the more plan QA error increases. Tolerance error of OADT path is 0.357 using tolerance error of conventional plan QA. Henceforth plan QA using OADT will include beam path error. In addition, It will increase reliability through precise and various plan technique.

• 한국주거학회논문집
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• 제17권6호
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• pp.129-140
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• 2006

The study suggests that to compensate for the variety of inhabitants, flexible housing plans are needed. Furthermore, it proposes the support and infill system for the flexible plan of multi-family housing based on the inhabitants need. The inhabitants' need for the flexible plan of multi-family housing was studied using a survey using models. The survey target was the 100 housewives living in a $126.6m^2$(sold as 45 Pyeong) Apartment in Busan. The characteristics of the respondents were first examined, then to figure out the attitude towards the need for the flexible plan of multi-family housing, the concept and preference for the plan, and the satisfaction level of the current apartment plan were analyzed. To find out the structure of the flexible plan of multi-family housing, the need for the structure, furniture, light, and finishing materials were studied. Lastly, to learn the durability of the construction material, the preferred moving period and the reasons were researched. On the basis of the findings, the support and infill system was suggested.

• 한국주거학회논문집
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• 제18권3호
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• pp.41-49
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• 2007

The purpose of this study was to investigate the using behavior of the balcony space in apartment housing for improving apartment balcony as dwelling space. For that, it is needed to identify the practical meaning of balcony space as function so balcony expansion and the using behavior of balcony space were investigated and analyzed. For this study, survey and depth-interview methods were used for data collection. The major findings were as followings: 1) Balcony expansion mainly occurred in balcony of livingroom and bedroom. Balcony expansion showed several phases according to the type of plan and function of balcony space and few residents chose expansion of all balconies. 2) The using behavior of balcony space was categorized by these various functions of balconies. It was also related to unit-plan type of apartment housing. These results can provide improvement guidelines for the balcony with the differentiation of design factors for residents.

• 대한공간정보학회지
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• 제17권1호
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• pp.53-59
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• 2009

일반도시계획은 보편적이고 획일적인 건축행위를 제한하는 평면계획인 반면 지구단위계획은 필지, 가구, 획지단위 별로 차등을 두어 다양한 건축행위를 유도할 수 있는 입체적인 계획이다. 그러므로 단지계획을 위해서는 토지이용계획 등 2차원적인 토지정보뿐만 아니라 채광, 배수, 향 등의 분석을 위해 3차원적인 지형정보의 이용이 필요하다. 이러한 필요성을 충족시키기 위해 GIS 및 사진측량 기법을 이용하여 정보를 구축한다면 보다 합리적이고 효율적으로 단지계획을 수립할 수 있다. 본 연구에서는 테스트지역에 대해 GIS기법을 이용하여 단지계획을 위한 정보를 구축하였으며 위성영상과 DEM으로 대상지역의 3차원 모델을 구축하여 분석하였다. 연구결과 토지이용분석, 배향 분석, 수계분석, 경사분석을 실시하여 지구단위계획 수립에 효율적으로 활용할 수 있었다. 또한 분석결과를 반영하여 실제 대상지역에 대해 지구단위계획을 수립한 결과 적절하며 효율적임을 알 수 있었다.

• 대한방사선치료학회지
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• 제24권1호
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• pp.11-14
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• 2012

목 적: Anisotropic Analytical Algorithm (AAA)는 Pencil Beam Convolution (PBC) 알고리즘에 비하여 2차선과 조직 불 균질에 대한 영향에 보다 더 정확한 선량계산을 제공한다. 본 연구는 유방암 접선조사 치료계획에서 PBC 알고리즘과 AAA의 선량계산 알고리즘에 따른 선량분포의 차이를 분석하고자 한다. 대상 및 방법: 선형가속기(CL-6EX, VARIAN, USA)의 6 MV 에너지를 이용한 유방암 환자 10명을 대상으로 Eclipse treatment planning system (Version 8.9, VARIAN, USA)을 사용하여 전산화 치료계획을 수립하였다. Conventional Radiation Therapy plan(Conventional plan)과 Field-in-Field Intensity Modulated Radiation Therapy plan (FiF plan)을 PBC 알고리즘을 이용하여 치료계획을 수립한 후 Monitor Unit (MU)를 고정시키고 AAA로 변경하여 선량계산하고, Dose Volume Histogram (DVH)을 이용하여 치료계획을 비교 분석하였다. 결 과: 첫 번째, Conventional plan의 PBC 알고리즘과 AAA에 따른 차이를 평가한 결과 치료용적에 대한 평균 Conformity Index (CI) 값의 차이는 PBC 알고리즘에서 0.295 높게 평가 되었다. 동측 폐에 대한 선량을 평가한 결과 $V_{47Gy}$과 $V_{45Gy}$는 PBC알고리즘에서 각각 5.83%, 4.04% 높게 평가되었고, Mean dose, $V_{20Gy}$, $V_{5Gy}$, $V_{3Gy}$는 AAA에서 각각 0.6%, 0.29%, 6.35%, 10.23%높게 평가되었다. 두 번째, FiF plan의 경우 치료용적에 대한 평균 CI 값의 차이는 PBC 알고리즘에서 0.165 높게 평가 되었고, 동측 폐에 대한 선량은 $V_{47Gy}$, $V_{45Gy}$, Mean dose는 PBC 알고리즘에서 각각 6.17%, 3.80%, 0.15% 높게 평가되었고, $V_{20Gy}$, $V_{5Gy}$, $V_{3Gy}$는 AAA에서 각각 0.14%, 4.07%, 4.35% 높게 평가되었다. 결 론: 유방암 접선조사에서 AAA로 계산했을 때, PBC 알고리즘에 비해 치료용적에 대한 Conformity가 Conventional plan, FiF plan 각각 0.295, 0.165 낮게 평가 되며, 동측 폐의 고 선량 영역의 선량은 적게 나타나며, 저 선량 영역의 선량은 많게 나타므로 폐에 대한 선량을 평가하는 데 선량계산 알고리즘에 따른 특징을 고려해야 할 것으로 사료된다.

• 한국컴퓨터정보학회논문지
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• 제22권10호
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• pp.129-135
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• 2017

This research is to identify an easy and effective method of teaching-learning plan. The teaching-learning plan is a blue_print applied for designing effective lessons. However, most of the teachers regard it as a difficult and inefficient job. This study proposed the concrete instructional model framework as a tool to develop the teaching-learning plan easily and effectively. The concrete instructional model framework will represent a decomposed instructional strategy applied for each step of the instructional model developed by educational researchers. This method is applied to develop a computer teaching-learning plan. Therefore, the proposed method will expand an easier teaching-learning plan. Furthermore, the proposed method develops a teaching-learning plan with fluent content in detail based on low-level instruction strategies applied in the concrete instruction model framework.

• 한국실내디자인학회논문집
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• 제21권6호
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• pp.54-61
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• 2012

The aim of this study is to understand the plan characteristics used in unit floor planning mainly with examples of mixed-use residential tall buildings. The study will extract plan characteristics mainly using the graph expressive technique with essential information of the zoning function of residential space, rather than merely analyzing the various construction floor plans by type. The research method involves studying a group of 50-story buildings (over 200 meters) which were built between 2002 and 2008. Among 6 high-rise residential buildings case, we extract the most preferred type from 34 types, And then we simply classify rooms in 3 zoning, the master, living and children's zones. Finally we analyze the correlation among 3 simple zone and then extract some model type. The results of this study revealed three main findings. First, using the 3 functional zones, the shape of the main building and the unit floor plan can be analyzed simply even when they appear to be complicated. Second, we can extract common features when we analyze the unit floor plan from the viewpoint of the penetrability among 3 zoning. Third, we can extract 2 types when we analyze the unit floor plan from the viewpoint of 3 connected functional zoning concepts.

• 산업경영시스템학회지
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• 제21권46호
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• pp.181-196
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• 1998

The aim of this research is the development of a CAPP system which can use the old experience of process planning to generate a process plan for a new part and learn from its own experience using the concept of stratified case-based reasoning(CBR). A process plan is determined through the hierarchical process planning procedure that is based on the hierarchical feature structure of a part. Each part and case have their own multiple abstractions that are determined by the feature structure of the part. Retrieving the case in stratified case-based process planning is accomplished by retrieving the abstraction that is most similar to the input part abstraction in each abstraction level of the case-base. A new process plan is made by the adaptation that translates the old case's process plan into the process plan of a new part. Operations, machines and tools, setups and operation sequence in each setup are determined in the adaptation of abstraction using some algorithms and the reasoning based on knowledge-base. By saving a new part and its process plan as a case, the system can use this new case in the future to generate a process plan of a similar part. That is, the system can learn its own experience of process planning. A new case is stored by adding the new abstractions that are required to save as the new abstraction to the existing abstractions in the case-base.

• 대한안전경영과학회지
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• 제17권1호
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• pp.125-130
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• 2015

Techniques, using physical wedge filter and using dynamic wedge filter and FIF(Field in Field) and ISCT(Irregular Surface Compensating Technique), have been developed according to progress of radiation therapy of breast cancer. Measurement of dose was done to judge the usefulness of technique using three cases, non tissue loss after breast conserving operating and tissue loss after breast conserving operating and mastectomy. Dose indexes of breast tissue, CI (Conformity Index), HI (Homogeneity Index) and QOC (Quality of Coverage), dose index of skin, or dose indexes of lung, volume of 50 percent dose and 20 percent dose were estimated and compared. Using dynamic wedge filter is useful plan at non tissue loss allowing for high dose of lung. FIF and ISCT are useful plan at tissue loss. ISCT is useful plan at mastectomy. Henceforth, we need to apply to valid plan and body type and thorax size.