• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.99-99
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• 2011

최근에 미국에서 출범한 수질 교환 법은 수질기준을 혁신적인 접근방법으로 만족시키는 법이다. 이 법안은 수질기준을 초과하지 않는 조건에서 한 유역 안 다른 지점들의 점 오염과 비점오염 배출의 교환을 허용한다. 이 법안을 적용하기 위한 방법을 도출하기 위하여 많은 시험 프로그램을 운영하고 있지만 여전히 실제 교환은 상대적으로 적게 이루어지고 있다. 또한 하천내의 비 점오염량의 불확실성으로 인하여 교환 지점을 선정하고 적용하는 데에 큰 어려움이 있다. Hydrological Simulation Program-Fortran (HSPF)은 Soil and Water Assessement Tool (SWAT)과 함께 미국 하천 모델링에 많이 쓰이는 유역 모델로써 특히 HSPF는 각각의 토지 피복도의 퍼센트 투수량을 지정함으로써 도시지역의 유출량을 시뮬레이션 하는데 강점이 있다. 미국 중서부 미조리 주의 퍼시픽시를 포함하고 있는 Brush Creek 유역을 선택하여 퍼시픽시의 도시화 증가로 인한 Brush Creek 유역의 상류와 하류지역의 유출량 및 Sediment 변화를 예측하여 수질관리법을 적용하는 방법을 연구하였다. 이 연구의 특징은 원격탐사 이미지 (QuickBird)로 구현한 최근의 토지 이용을 미래의 도시지역으로 전환한 토지이용도를 사용함으로서 특정 유역을 가장 정확하게 이해하는 시뮬레이션을 가능하도록 한다는 점이다. 각각의 토지이용에서 도시화가 3가지의 강도를 가지고 진행된다는 시나리오를 이용하여 모델링을 하였고 이로 인해 계산된 유출량과 Sediment 양을 이용하여 각각의 토지이용 변화 별 수질 교환단위를 도출 하였다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.04a
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• pp.453-456
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• 2011

본 연구에서는 건축외장용 접착제의 발연특성을 알아보기 위해 접착제를 용도별로 구분하여 연기밀도시험기를 이용해 최대연기밀도와 초기발생연기밀도를 알아보았다. 실험 결과 창호전용 접착제가 586초에 509.64로 가장 많은 연기밀도를 발생하였으며, 석재용 275.63, 목공용 232.25의 순으로 많은 양의 연기가 발생하였고, 타일용 18.65, 스티로폼용 6.44로 최대연기밀도를 나타내었다. 창호전용과 스티로폼용의 경우 최대연기밀도를 나타낸 시간은 비슷한 범위에 나타났으나 연기밀도 값은 스티로폼용에 비해 창호전용 접착제가 80배 가까이 연기가 더 발생하는 것을 알 수 있었다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.397-400
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• 2011

건축외장용 접착제 중 일반적으로 사용되는 접착제를 용도별로 선정하였으며, 접착제의 종류는 스티로폼용, 목공용, 석재용, 타일용, 창호전용 등 총 5가지이다. 본 연구에서는 건축외장용 접착제를 대상으로 콘칼로리미터를 이용하여 발열특성을 알아보았다. 실험 조건은 ISO 5660 규격에 맞춰 각각의 접착제를 100 mm${\times}$100 mm 크기의 성형틀에 굳힌 다음 복사열 50 $kW/m^2$의 조건으로 실험을 실시하였다. 건축외장용 접착제의 연소특성을 정량적으로 나타낸 연구결과는 각각의 화재위험 정도를 분류하는 기초자료로 활용하는데 의의를 두었다.

• Progress in Medical Physics
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• v.24 no.4
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• pp.205-212
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• 2013

Recent developments of image guided radiation therapy (IGRT), especially the On Board Imaging (OBI) system and the cone beam CT (CBCT), enable the radiation treatment more accurate and reliable. IGRT is widely used in the radiation therapy as a standard of care. Use of IGRT is even expected to increase in the near future. IGRT is only beneficial to patients when it is used with proper considerations of safety and appropriateness of the techniques. Institutional procedure should be developed based on the clinical need and the deep understanding of the system before applying the new technique to the clinic. Comprehensive QA program should be established before to the clinic and imaging dose should be considered when preparing the departmental practice guidelines for IGRT.

• Korean Journal of Heritage: History & Science
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• v.56 no.1
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• pp.182-205
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• 2023

The use of royal artificial flowers was finally found through schematics and records in Wonhaeng Eulmyojeongri Uigwe, which organized the procession to Hwaseong in 1795. The results of classifying the uses of artificial flowers in the brthday banquet at Bongsudang Hall in 1795 and considering the shape, user, and usage are as follows. According to literature records, artificial flowers were made with high-quality materials such as gold, silver, and silk thread in the early period, but were mainly made of paper in the later period. Artificial flowers were used for decorating official hats, Bongsudang Hall, and banquet tables. The Sagwonhwa was used for decoration of the official hats of members of the royal family, and the one on the top was called Eosam-Sagwonhwa. At the birthday banquet inBongsudang Hall, King Jeongjo and Hyegyeonggung used the Eosam-Sagwonhwa and put it on the right side of the official hats. Officials put peach blossom with two petals on the left side of the official hats for decoration. The artificial flowers for decoration of the official hats of musicians and dancers were more expensive and flashier than the officials' ones. Depending on the dance, several artificial flowers were inserted into the official hats. When measuring the size of artificial flowers, the scale used was when making a ceremonial article. For artificial flowers for decoration of the banquet hall, red and white peach blossoms were placed in two jars with dragons painted on them and them placed on two red-painted tables, respectively. The table and jar with flowers were tied together with a red cotton string and fixed so as not to fall over. The artificial flowers for decoration of the banquet table of King Jeongjo, Hyegyeonggung, and the king's sisters were a large lotus, medium-sized lotus, peony, rose, and specially made peach flowers. The artificial flowers for decoration of the banquet table of guests and officials were small lotuses and peach blossoms. The artificial flowers used in the birthday banquet at Bongsudang Hall the most were peach blossoms, and peaches had the meaning of longevity and exorcism. It is expected that the above research results will be helpful in understanding the characteristics and usage of artificial flowers in the period of King Jeongjo and use in reproducing royal feasts and producing traditional cultural contents.

• Journal of The Korean Association For Science Education
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• v.33 no.2
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• pp.249-265
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• 2013

The purpose of this study was to examine the influence of reading framework on writing for reflection when applied to inquiry-based Science Writing Heuristic approach. This study was conducted with 67 3rd grade middle school students. Thirty-two out of 67 students were assigned to R-SWH (Reading framework-Science Writing Heuristic) group while the other 35 students were assigned to SWH (Science Writing Heuristic) group. The R-SWH group has consistently used reading framework which the SWH group has not used when the inquiry-based science writing heuristic approach were carried out. The result of this study indicated that the R-SWH group showed a higher proportion of students who made writing for reflection by learning from reading materials than the SWH group. The R-SWH group used reading materials in order to understand the idea comprehensively and concept related to the topic the most, while the SWH group also used them for the same purpose as the R-SWH group but the ratio was less than the R-SWH group. In addition, as the learning activity has progressed, the R-SWH group showed that the proportion of students who transferred the science concept from reading materials into writing for reflection and the number of transferred concepts were higher than those of the SWH group. Therefore, the reading framework applied to inquiry-based science writing heuristic approach can facilitate a meaningful activity on reading and writing as a scaffolding to develop conceptual understanding.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.6
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• pp.176-187
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• 2018

The Korean government has been encouraging 'continuous' post-pump priming project management through relevant local personnel planning, action, and management, upon the selection of 68 sites for urban regeneration as part of the New Deal Project. This study assessed the utilization characteristics of containers, the socio-experimental temporary occupation facilities, as a tool for 'sustainable' urban regeneration. This is to identify the potential limitations of urban regeneration by the utilization of containers as public sector temporary occupation facilities and to provide adequate directions based on its efficacy. By comparing three Korean cases with the Japanese WaiWai project, in terms of 10 elements, the preoccupations with the social trend and scenery, and undifferentiated functions of the facilities focusing on the commercial or working aspects have been identified as limitations of Korean cases. Based on the analyses, the following are suggested as plausible approaches to utilize socio-experimental containers for sustainable urban regeneration: 1. Planning and management should be done by the same organization because the absence of the planning party's participation in the management likely leads to the pursuit of only profits. 2. Diversification and combinations of different utilization purposes of a single site and numerous planning of experimental container uses are in need. 3. Accommodations of heavy commercial uses lead to a decline in the continuity of follow-up projects and a change in the urban regeneration directions. Therefore, it is important to include a public socio-experimental program rather than a simple commercial or promotion program for the following urban renewal project.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.795-814
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• 2021

With the development of science and technology in recent years, various types of unstructured buildings have begun to be implemented by combining traditional architectural styles with digital tools, which are significantly different from conventional formal buildings. Designers will use various methods or digital tools to complete the unstructured and freer architectural forms when building an unstructured building. Based on this background, the need for research on the criteria for evaluating the characteristics of unstructured architectural forms is raised. First, the text was reconstructed by considering and integrating the elements of the unstructured exterior form based on prior research, with the external form of the unstructured building as the main research object. Second, the purpose of this study was to classify various types of unstructured forms and to provide important basic data for designing digital processes of unstructured architectural forms.Third, from 2000 to 2020, the text focused on the study of unstructured buildings and conducted in-depth analysis of the characteristics of their form expressions. While providing a case basis for the study of related fields, distribution laws and presence values related to the characteristics of unstructured buildings were sought. In addition, the analysis was conducted in combination with the distribution of functional use of buildings, and this study is differentiated from the existing research in that the atypical form is applied to the buildings by use, and the application trend of this type is understood to enhance understanding of the atypical form of buildings.

• The Journal of the Korea Contents Association
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• v.16 no.8
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• pp.540-555
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• 2016

Art in the modern sense takes the lead to reform the society through constant interaction with members in society. Therefore the works of Art should be understood as social compositions that are reconstructed creatively according to the social environmental impact. Recording, collecting and preserving the references are compulsory for the constant social reform, so the importance of Archive is stressed. However, the Art Archive in Korea is operating very limitedly just to provide simple references to the users. Thus, We need to seek for various ways and user-focused service to utilize the digitalized Art culture records, and need positive research on Art Archive to enhance the creative activities. So in this study, we subdivided the interactivity and applied TAM model. Our analysis on the effect on the purpose of use shows that the users need to be provided with useful informations easily for their creative activities. It also shows that the purpose of use increases through awareness of interactivity. However, the result of this study has a limit of the sample so further studies for the purpose is suggested.

• Proceedings of the Korean Vacuum Society Conference
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• 2015.08a
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• pp.102.2-102.2
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• 2015

진공 시스템의 기저상태를 지배하는 것은 대부분의 경우 용기 내면에 수십 단원자 층 정도로 흡착되어 있는 물이다. 용기 압력이 10-9 mbar 대가 될 때까지는 잔류기체의 90% 이상이 수분이고 압력을 10분의 1로 떨어뜨리려면 10배의 시간이 더 필요하다는 소위 1/t 법칙은 광범위한 흡착에너지를 가지는 물분자의 표면방출 특성으로 잘 설명되어진다. 용기가열 등 적극적인 표면처리를 하지 않고 전형적인 압력변화 양상은 그대로 유지하면서 절대적인 시간을 줄이는 가장 직접적인 방법은 물 배기속도를 가능한 한 높이는 것이지만 대부분의 고진공 펌프들에서 물배기속도만 더 증가하도록 만드는 것은 쉽지 않다. 크라이오 워터펌프(CWP: cryo-water pump)는 바로 이런 고민을 제대로 해결할 수 있는 유일한 실용적인 방안이라고 말할 수 있다. 다른 기체분자들의 배기는 일단 염두에 두지 않고 물배기만을 열심히 해서 배기시간을 단축하고 도달 진공도를 낮추는 것을 목표로 하는 장치가 CWP이다. CWP는 모든 기체에 반응하는 정통적인 크라이오 펌프에 비해 훨씬 간단하고 저렴하게 만들 수 있으면서도 진공 시스템에 큰 영향을 미칠 수 있지만 그동안은 물배기의 필요성에 대한 인식이 미흡하고, 또 부수적이고 추가적인 비용이 드는 것으로 생각되어 주목을 받지 못했지만 디스플레이와 반도체 산업을 필두로 물분압을 낮추고 생산수율을 높이는 것에 점점 더 관심이 높아지면서 CWP에 대한 수요도 높아지고 있다. CWP의 물배기는 아주 단순한 응축현상에 의존하므로 물리적으로 이해하고 성능을 예측하는 것이 직관적이지만 사용용도에 따라 물 이외의 기체분자들은 잘 통과시키면서 물배기는 최대화하는 최적설계가 요구되거나 터보분자펌프(TMP)와 같이 이질적인 고진공펌프와 조합하여 사용하는 경우 기체 온도 의존성을 고려해야 하는 등 까다로운 점이 있다. 본 보고에서는 CWP+TMP로 구성된 복합진공배기시스템을 설계하면서 CWP만의 물배기성능과 복합 시스템의 물 및 알곤 배기성능을 예측하고, 두 펌프의 상호관계에 대해 분석하며, 실제 만들어진 복합배기시스템을 사용하여 실험적으로 구한 물 및 알곤 배기속도 측정결과에 대해서도 간단하게 논의하려고 한다.