• Journal of the Korean Society of Radiology
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• v.15 no.4
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• pp.445-453
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• 2021

CT scan is reported to have a high risk of cancer due to a relatively high dose among medical radiological examinations. In particular, exposure to radiation to the breast, which is sensitive to radiation, is inevitable during a chest CT scan for female patient. In this study, the dose reduction effect of wearing a compression band during chest CT scans in women was evaluated, and the lifetime attributable risk due to the effective dose exposed during the CT scan was estimated. As a result, when the compression band was used, the effective tube current decreased as the outer perimeter of the chest became smaller, and it was analyzed that the CT dose index and effective dose were also reduced. In addition, the lifetime attributable risk by chest CT scan was found to reduce the cancer risk by 3.2 per 100,000 for all cancers, 0.2 per 100,000 for solid cancer, and 0.8 per 100,000 for breast cancer, based on women in their 30s when using a compression band. It is judged that the risk of cancer can be reduced through the use of appropriate scan parameters and dose optimization measures such as compression bands for future CT examinations.

• Journal of the Society of Disaster Information
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• v.8 no.2
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• pp.119-137
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• 2012

In this study, the damages and condition of road pavement were analyzed using pavement management system (PMS) for the structural improvement. Problems of road pavement management were issued by in-depth interview with workers in charge of plant, construction and supervision. By surveying advanced road pavement management, the way how to improve road pavement management in Seoul was discussed. In conclusion, it is necessary to take measures against road heavy traffic and heavy rain in summer. It was found that the problem of early damages of road pavement due to uniform layout with analyzing life cycle cost (LCC). According to the results of survey, it was suggested to strength practical training and to control precisely the temperature of pavement in the process of production and construction.

• Korean Association of Arts Management
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• no.56
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• pp.349-380
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• 2020

The paper is to assess the recent changes in Architectural Artworks system in two regional districts, Seoul and Gyeonggi Province, and to propose policies for further improvement. We focused on four aspects: overall pass rate, top-ranked artists' pass rate, proportion of artists ever passed, genre proportion artworks. It is observed that quality of artworks has improved, market monopolization has been eased, and entry to the market has become more active. However, sculptures accounted for the majority. Public art is gradually changing from 'decorative art' to 'site-specific art', and seeking harmony between architecture and surrounding landscape. To keep pace with this new trend, more institutional efforts should be made: fund raising to induce artwork supplies; introducing life-span concept to secure removal and deformation of artwork; imposing artists' follow-up services; imposing penalties against poor management; and authorizing the committee to choose exhibition sites.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.568-574
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• 2021

According to the Framework Act on Sustainable Infrastructure Management, which has been enforced since 2020, reservoirs should be managed to minimize life cycle costs caused by aging through preemptive management such as systematic maintenance and performance improvement. For maintenance in consideration of the life cycle, it is essential to derive the end of life due to continuous performance degradation as the common period increases. For this purpose, it is necessary to develop a performance-predicting model for reservoirs. In this study, a reservoir was divided into main complex facilities to develop a model for the maintenance of the life cycle. A model was developed for each facility. For model development, maintenance information data were collected under management by the Rural Community Corporation. The data available for model development were selected by analyzing the collected data. The developed model was used to predict the expected life expectancy of the reservoir in the current maintenance system and the expected life expectancy in the case of no action. By using the developed model, it is expected that it will be possible to support decision making in operation management and maintenance while considering the life cycle of the reservoir.

• Korean Journal of Construction Engineering and Management
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• v.23 no.3
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• pp.66-73
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• 2022

In order to induce users to purchase excellent products in the water industry that satisfy the technical standards of excellent products, in this study, it is to present the advantages of the cost aspect of the pumps as the objective basis. It will be to promote technology development of domestic water companies and to create a virtuous cycle structure in the water industry. In order to present an objective basis for the merits in terms of cost, an economic evaluation was conducted through life cycle cost analysis. For the LCC analysis, initial cost (pump cost and installation cost), operation cost (energy cost and maintenance cost) and demolition cost (disposal cost and residual value) are searched and calculated. As the results of comparison on two capacity of pumps, the energy cost of the excellent pump is 212 million KRW lower than the that of general pump in the large pump. The cost of excellent pump was 17 million KRW lower than that of general pump in small capacity pump. As the results of sensibility test, if the product is developed in the direction of improving pump efficiency and increasing the replacement cycle of consumables, it is predicted that the effect on LCC will be large.

• (The)Study of the Eastern Classic
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• no.70
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• pp.33-58
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• 2018

The purpose of this paper is to clarify the life and poetry of Dokshok Hwang Hyok. In Chapter 2, we looked at the life of Hwang Hyok. There are two characteristics in the life of Hwang Hyok. First, Hwang Hyok had excellent literary talent. Secondly, Hwang Hyok wrote in an attempt to surrender during the Japanese Invasion of Japan. That is why he lived a 21 year detained life. In Chapter 3, we looked at poetry based on the life of Hwang Hyok. The features of poetry are as follows. First, the image of Somu and reality of Tiger and Dhole go around. Hwang Hyok lived a confined life because of the Japanese Invasion of Korea. Because of that, Hwang Hyok recognized the Japanese invasion of the Imperial Japan as a world where Dhole and tigers travel around. It symbolized the image of Sommu that he did not surrender. Second, Changsha, is the world and Gulwon images. Changsha is Gulwon the space of self-destruction. Hwang Hyok likened his dark life to Gulwon dead. This is because Hwang Hyok's life is similar to Gulwon's life. In other words, Hwang Hyok was most appropriate to compare his tough life to Gulwon, who drowned in Myeoglasu.

• Journal of Korean Medical classics
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• v.20 no.4
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• pp.289-296
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• 2007

통과대허숙미적생애화저서적연구득출여하결론(通過對許叔微的生涯和著書的硏究得出如下結論). 허숙미(1080${\sim}$1154)생어북송(許叔微(1080${\sim}$1154)生於北宋), 활동어북송여남송지간(活動於北宋與南宋之間), 타환실부모(他幻失父母), 내전심어의학학습(乃傳心於醫學學習), 오십삼세시고취과거(五十三歲時考取科擧), 증재관십년(曾在官十年), 내역관역의적유사지대표인물(乃亦官亦醫的儒士之代表人物). 허숙미적저서주요유 "허숙미상한론저삼종" (許叔微的著書主要有 "許菽微傷寒論著三鐘"), 포괄(包括) "상한백증가"("傷寒百證歌"), "상한발미론"("傷寒發微論"), "상한구십론"("傷寒九十論"), "보제본사방"("普濟本事方"), 영외거설환유 "중경삼십육맥법도"("仲景三十六脈法圖"), "치법팔십일편"("治法八十一篇"), "익상한론"("翼傷寒論"), "변류" 등("辯類" 等), 단현이불존(但現已不存). 현금소견적 "유증보제본사방"(現今所見的 "類證普濟本事方"), 역즉"본사방속집"(亦즉"本事方續集"), 수재어단파원윤적"중국의적고" 화구길생적"삼삼의서"(收載於丹波元胤的"中國醫籍考"和구吉生的"三三醫書"), 단요확정시허숙미적서서향유허다의점(但要確定是許叔微的署書향有許多疑點). "상한백증가"시장"상한론"적주요내용화역대의서급각의가적주장화일백수처방("傷寒百證歌"是將"傷寒論"的主要內容和歷代醫書及各醫家的主張和一百首處方), 이칠언가결적형식사성적전저(以七言歌訣的形式寫成的專著), 시현존최조적가결체의서(是現存最早的歌訣體醫書); "상한발미론"공유22론조성("傷寒發微論"共由22論組成), 시천발중오미적상한론참고서(是闡發仲奧微的傷寒論參考書); "상한구십론"유90론조성("傷寒九十論"由90論組成), 시허숙미치료상한병증적의안집(是許叔微治療傷寒病證的醫案集); "유증보제본사방"공유10권25문조성("類證普濟本事方"共由10卷25門組成), 재방373수(載方373首), 시집자기증시험과적처방화의학이론방면적신적영오이저성적(是集自己曾試驗過的處方和醫學理論方面的新的領悟而著成的).

• Korean Journal of Construction Engineering and Management
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• v.9 no.4
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• pp.57-65
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• 2008

As the society is being developed, the desire about life quality is also growing. Even though the process of waterproof work has very close relation with these life quality, we always focus on management after problem than the precaution of problem. So this process has the highest rate of mengel. We develop LCC analysis model considering the precaution and try to show the necessity of the precaution by comparing and analyzing every alternative proposal during LCC. By studying of the previous work and the result of questionnaire, we deduce the problem of waterproof work in construction area. By discussion with an expert in this process and research, we make solutions about precaution and set the cost items in every alternative proposal about these solutions. We understand the effect of each elements through sensitive analysis of the cost items, and find the economically best suited solution.

• Journal of Korean Philosophical Society
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• v.105
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• pp.291-320
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• 2008

이 글은 2004년 충남대학교 국사학과 한국학술진흥재단 기초학문지원 마을사연구의 공동연구 작업에 의한 연구 성과물이다. 연구 대상 마을인 충남 논산시 노성면 병사리는 17세기 호서지역의 3대거족의 하나인 파평윤씨노종오방파(坡平尹氏魯宗五房派)가 세거했던 마을이다. 이 마을의 대표적인 유학자로는 우암(尤庵) 송시열(宋時烈)과 40년 동문사이인 노서(魯西) 윤선거(尹宣擧)와 그의 아들인 명재(明齋) 윤증(尹拯)이 있고, 그 외 파평윤씨노종오방파의 유서와 전통을 이어갈 수 있도록 토대를 닦은 동토(童土) 윤순거(尹舜擧) 등이 있다. 그리고 이 글의 주제 인물인 둔옹(鈍翁) 윤지(尹指)는 동토(童土) 윤순거(尹舜擧)의 아들이다. 특히 윤지(尹指)는 동토(童土) 선생의 서자로 태어났지만 명재(明齋) 윤증(尹拯)의 뒤를 이어 노종오방파(魯宗五房派)의 종중서당(宗中書堂)인 종학당(宗學堂)의 사장(師長)을 지낸 인물이다. 적서의 차별이 엄연함에도 불구하고, 파평윤씨노종오방파(坡平尹氏魯宗五房派) 자제들의 교육을 총책임지는 막중한 소임을 맡았던 것이다. 그 결과 그가 사장(師長)으로 있는 동안 수많은 과거 급제자들을 배출하였을 뿐만 아니라 선대에 이루어 놓은 가학적 전통을 후세에 전할 수 있는 매개자 역할을 훌륭하게 수행했다. 그러나 그동안 윤지(尹指)의 사장(師長)으로서의 생애와 학문 활동에 대해서는 전연 알려지지 않은 채 베일에 가리어져 왔다. 그러던 중 그의 대표저서인 "둔옹집(鈍翁集)" 이 그의 사후 200 여년 이 지난 1916년에 8대 족손 윤구병(尹龜炳) 윤혜병(尹惠炳) 등에 의해 간행되었다. 이에 그의 학문이 세상에 알려질 수 있는 계기가 되었던 것이다. "둔옹집(鈍翁集)"은 "연소천지문답(演小天地問答")과 동몽문답(童蒙問答) 등 두 편으로 구성된 문집인데, "연소천지문답(演小天地問答)"은 4권 1책, 약 13만 여자 분량으로 그 주요 내용은 한의학과 관련된 내용이 주로 되어 있고, 동몽문답(童蒙問答)은 1권 1책 약 7,600여 자 분량으로 주역(周易)의 기본 구성원리인 음양오행설을 자문자답의 형식을 빌려 소개하고 있다. 이 글의 전반부는 둔옹(鈍翁) 윤지(尹指)의 생애를 소개한 후 중반부 이후부터 그의 음양오행에 대한 이해를 소개하였다. 그리고 파평윤씨노종파 3人(윤선거(尹宣擧) 윤증(尹拯) 윤지(尹指))의 주역 이해를 통해 그들의 가학의 일단을 엿보았다. 다만 이글은 둔옹(鈍翁) 윤지(尹指) 연구의 효시(嚆矢)로써 그의 철학의 구체적인 내용 보다는 그의 생애와 개략적인 학문 활동을 소개하는 것에 초점을 맞추었다. 차후 그의 철학의 핵심이 담겨져 있는 "연소천지문답(演小天地問答)"은 장차 한의학 분야 전공자와의 공동연구를 통해 소개해야 할 것이다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.23 no.5
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• pp.315-323
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• 2021

Tunnel is the most energy-consuming structure in road due to the characteristic of using artificial lighting during day and night. Therefore, tunnel lights are being replaced by LED lamp that have advantages with respect to low power consumption. The best use of social overhead capital can be expected by considering the life cycle cost, because to tunnel structures are accompanied by a series of medium-to-long-term and continuous processes of replacing auxiliary facilities. In this study, the saving effect by LCC analysis was quantitatively analyzed by replacing tunnel light sources from high-pressure sodium lamps to LED lamps. The effect of reducing the replacement cycle by increasing the life of the lamps and the resulting maintenance cost is very significant, on replacing tunnel lighting light sources with LED lamp.