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韓國産·中國産 운지(Coriolus versicolor(Fr.) Quel)의 抗腫瘍 成分에 관한 比較 연구
崔乘基,金泰均,林雄圭 서울대학교 농과대학 농업개발연구소 1993 서울대농학연구지 Vol.18 No.1
韓國産과 中國産 雲芝 Coriolus versicolor (Fr.) Quel의 抗腫瘍成分의 수율과 종양억제율을 비교하기 위해, 단백결합다당류를 유기용매침전과 ultrafiltration method에 의해 分離, 定量하였다. 한국산 Coriolus versicolor (Fr.) Quel의 항종양 성분의 수율은 13.8%였고, 중국산 Coriolus versicolor (Fr.) Quel의 항종양 성분의 수율은 12.7%였다. 한국산과 중국산 시료간에 종양억제율에는 유의성 있는 차이가 보이지 않았다. To Compare the yield and inhibition of ratio antitumor constituents of Coriolus versicolor (Fr.) Quel in Korea and China, protein-bound polysaccharides were isolated and quantitated by organic solvent precipitation method and ultrafiltration method. The yield of antitumor constituents of C. versicolor (Fr.) Quel in Korea was 13.8% and the yield of antitumor constituents of C. versicolor (Fr.) Quel in China was 12.7%. The inhibition ratio of both did not showed significant value..
여환호,변웅래,김영균 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.2
A wide variety of deformities can occur following repair of the cleft lip. Especially, cleft lip nasal deformities offer the severe psychologic, esthetic, and functional impairment. We must restore the deformities of alar cartilge, nasal tip, septum, columella, or pyriform aperture. The authors reconstructed the cleft lip nasal deformities using with the alar cartilage rearrangement, postauricular cartilage graft, and/or columellar lengthening. The 3 case reports are presented.
조동욱,김지영,박웅규,윤상균,이성석,김태우 西原大學校 1992 西原大學 論文集 Vol.29 No.-
In this paper, a new shape feature extraction method of the objects using surface curvatures is described. First, the values of the H & K are calculated from range data as given input. Then objects are assigned in the form of 8 primitives by the signs of the H & K values. But existing methods have the difficulties with the complex object. Therefore, We propose the method for the complex primitives such as cone ridge and cone valley. Finally, the effectiveness of this paper is demonstrated by several experiment.
Decision Support Tool for Excavation Operation using Genetic Algorithms
Ung-Kyun Lee,Kyung-In Kang,Hun-Hee Cho 대한건축학회 2006 Architectural research Vol.8 No.2
The appropriate fleet estimation of the excavation equipment is a major factor in the determination of the cost and time requirements of a project. But the decision of what kind of equipment selected is often based on heuristic methods or trial and error in Korea. Thus, this study proposes a prototype model that uses genetic algorithms to select fleet estimation of loaders (backhoe) and trucks used in excavation work. To verify the applicability of this model, the case study was performed. And the result of the genetic model was compared with that of the trial & error method. The use of the genetic model suggested this study required 44days, 2 units of backhoes, 7 units of trucks, and a total cost of 171,839,756 won. With the estimated fleet number of equipment, the minimum cost of excavation work can be calculated, taking account of the time-cost trade-off. By utilizing this prototype model, the efficiency of excavation work can be improved.
Assessment of Requirements for Successful Mobile Project Management Information Systems
Lee, Ung-Kyun,Jeong, Hyung Seok David,Woldesenbet, Asregedew The Korean Institute of Building Construction 2014 한국건축시공학회지 Vol.14 No.1
The objective of this study is to assess the requirements of tablet PC-based PMIS applications designed for use on construction sites to determine whether these new programs can play a significant role in increasing the efficiency of a project. In this research, the current market conditions of PMIS running on a tablet PC were analyzed. In addition, two industry surveys were conducted. A research team interviewed some industry experts and identified fourteen useful and desirable functions that can be incorporated into tablet PC-based applications and project management tools. Through a questionnaire survey, the most effective functions for the tablet PC-based PMIS were identified. The three top-rated functions among those suggested were Contact Information for Job-Related Personnel; Receive and Respond to Submittals, RFIs, and Notices; and Problem Solving for Design and Engineering Issues. The results of this research are expected to provide helpful information for mobile application developers and members of other interested groups in the construction industry.
Lee, Ung-Kyun The Korean Institute of Building Construction 2015 한국건축시공학회지 Vol.15 No.3
A large-scale research project to develop a robot-based automated building construction system for steel structures was successfully conducted in South Korea. This paper discusses the results of the real-scale test and the key lessons gained from the testing process. The system was assessed in terms of system productivity, construction cost, quality control, and safety improvements. While the productivity of the automated system showed an improvement of about 9.5%, the construction cost was about six times higher than that of the conventional method. The field test also indicated that the automated system requires more on-site quality control measures. However, because the system can eliminate the causes of various safety accidents, safety levels might be expected to be improved significantly. It is expected that this paper will provide knowledge and insight for developing new systems, and the results of the real-scale test might be useful for other researchers and similar research projects in the future.
Decision Support Tool for Excavation Operation using Genetic Algorithms
Lee, Ung-Kyun,Kang, Kyung-In,Cho, Hun-Hee Architectural Institute of Korea 2006 Architectural research Vol.8 No.2
The appropriate fleet estimation of the excavation equipment is a major factor in the determination of the cost and time requirements of a project. But the decision of what kind of equipment selected is often based on heuristic methods or trial and error in Korea. Thus, this study proposes a prototype model that uses genetic algorithms to select fleet estimation of loaders (backhoe) and trucks used in excavation work. To verify the applicability of this model, the case study was performed. And the result of the genetic model was compared with that of the trial & error method. The use of the genetic model suggested this study required 44days, 2 units of backhoes, 7 units of trucks, and a total cost of 171,839,756 won. With the estimated fleet number of equipment, the minimum cost of excavation work can be calculated, taking account of the time-cost trade-off. By utilizing this prototype model, the efficiency of excavation work can be improved.
Performance assessment model for robot-based automated construction systems
Lee, Ung-Kyun,Yoo, Wi Sung,An, Sung-Hoon,Doh, Nakju,Cho, Hunhee,Jun, Changhyun,Kim, Taehoon,Lee, Young Hoon The Korean Institute of Building Construction 2013 한국건축시공학회지 Vol.13 No.4
An adjusted assessment model based on benefit-cost analysis (BCA) is proposed for evaluating the economic efficiency of automated construction technologies. In contrast to conventional BCA, the model does not compare monetary values, but the differences in benefits and costs between traditional and automated construction methods. To verify the usefulness of the model, it was applied to a real-scale building construction project that used a fully automated building construction system, and the face validity of the model was confirmed. The results indicate that the model can support decision makers in identifying valuable benefit factors and in assessing the cost effectiveness of the system.
초고층 주거용 주상복합 건축물의 공종별 하자발생 특성 분석 연구
이웅균(Lee Ung-Kyun),서장우(Seo Jang-Woo),강경인(Kang Kyung-In) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.9
In spite of the recent rapid increase in high-rise residential building, minimal research has been carried out that focuses on the consequences of such a rapid increase, such as the occurrence of defects. The aim of this paper is to provide basic information on the pattern and character of defects of high-rise residential buildings based on historical data. In order to determine the occurring frequency characteristics of work types of high-rise residential building defects, a logistic regression analysis is conducted. The order of frequency ranking is wood floor finishing material, tiling, marble finishing, built-in furniture, kitchen furniture, wallpapering, ceiling finish, wood door/window work, and aluminum window work. For analysis, the dependent variable is set for the case where a work-type defect occurs between two high ranked ones. The independent variables are set for an elapsed year from the time of building completion (usage year), including structure type, the floor area of each household, and the location of where the defect occurred. The results show that structure type affects the occurrence of built-in furniture defects and the locations of the area of the defect affects whole work-types, but floor level defects do not occur in all cases. Furthermore, the wood door/window work does not decrease with time, though other work-types decrease. This result showed that the wood door/window work needs to be managed by life-cycle management.