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서울市 詳細計劃 운영실태 분석을 통한 制度運營의 改善方向 연구
이희정(Lee Hee-Chung),구자훈(Koo Ja-Hoon) 대한국토·도시계획학회 1997 國土計劃 Vol.32 No.6
The Detailed District Planning(DDP) system, which was introduced in the revised Urban Planning Law in 1991, is a policy instrument for a specific planning activities in a special area in urban setting. The main purpose of this study is to investigate some application problems of the present DDP system in built-up area of Seoul. The study investigated the problems in implementation through analyzing the existing situation of DDP system in Seoul And in this study, 6 DDP cases were studied and performing direct expert surveys. Through analyzing the cases in Seoul, we had recognized that the DDP system has some problems in terms of effectives for the built-up area's environmental improvement. Based on the investigations, three issues of institutional improvement could be reached : 1) The expansion of target regions of the DDP System. 2) Introducing the pre-review process before designating DDP boundary. 3) The allowance for local government's authority establishing related ordinances or guidelines. Also three Improvement issues of administration could be identified : 1) The identification of re-zoning process through the DDP system 2) The increase of the number of public officers who majored urban planning and design. 3) The extensive uses of advisory groups in municipal ward.
서울시 일반주거지역 세분을 위한 주거지 밀도분포 특성 연구(1)
이희정(Lee Hee-Chung),김기호(Kim Ki-Ho) 대한국토·도시계획학회 2001 國土計劃 Vol.36 No.5
The study has started with the backgrounds such as followings. First, the urban problems arising from the residential areas under the current zoning system are (1) high density urban development which is disregard of district conditions (2) housing supply without considering the quality of living environment. Second, the Architecture and Construction Code allows the maximum of 400% in FAR(floor area ratio) in residential zones. However, the development pattern is in reality far short of the allowance. This suggests the necessity of lowering the statutory ratio. The purpose of this study is to investigate Classified Zoning Control(Down-Zoning) in residential zone appropriate to the level of current development density patterns in Seoul. So this research analyzed the factor of actually Realized FAR of the lot in residential zone in Seoul. In this study the FAR Factors are defined as following : the lot size, the width of fronting roads, the price of the land, the use and structure of building, the year of construction etc. But its impact status are different from that of factors in commercial and booming zone. And this study suggest some criteria of Bulk control in residential zone for classified zoning control in Seoul.
이희정 ( Hee Jung Lee ),정헌상 ( Heon Sang Jeong ),박춘근 ( Chun Geon Park ),이정훈 ( Jeong Hoon Lee ),박충범 ( Chung Berm Park ),김종태 ( Chong Tai Kim ),최애진 ( Ae Jin Choi ) 한국산업식품공학회 2014 산업 식품공학 Vol.18 No.4
This study conducted enzyme treatments to maximize the extraction of polysaccharide components in Angelica gigas Nakai (A. gigas). An extraction method of polysaccharides was established by using different enzyme treatments for the degradation of plant cell walls. Total carbohydrates and removed starch of A. gigas increased after enzyme treatments such as Viscozyme (V), Alcalase (A), Flavorzyme (F) and Termamyl 120L (T). The yield and total carbohydrates of VAFT were 12.20% and 76.80%, respectively; an increase of 1.4 times that of T and AFT and showed a significant difference (p<0.05). Removed starch content also increased by more than three times the control in water-extractable polysaccharides. Non-starch polysaccharide content of VAFT was 22.58%; it increased about 1.7 times that of the control (12.84%) and it was the highest compared to T and AFT. Arabinose and galactose, which were the main components of A. gigas polysaccharides, increased from 1.5 to 2.2 times the control in the enzyme treatment groups. The high molecular weight fraction I of the control, depending on enzyme treatment conditions, was about 491,282 Da. It degraded into a low molecular weight fraction ranged from 282,459 to 16,362 Da. The molecular weight of polysaccharides treated by the VAFT decreased to an average of 13,000 Da. So, VAFT was selected as the optimizing condition for extracting water extractable polysaccharides from A. gigas. As a result of this study, it is expected that A. gigas will be widely used for industrial materials and useful to develop and research materials of different medicinal plants which are not yet known.
역사문화환경 정비에서의 갈등해소를 위한 협력적 거버넌스 구축에 관한 연구
이희정(Lee, Hee-Chung),최성은(Choi, Sung-Eun) 대한국토·도시계획학회 2015 國土計劃 Vol.50 No.3
Recent policy shift for the city`s amenity and to improve the quality, who want to take advantage of existing historic and cultural environment, daily space awareness is growing. For amore sustainable management of these historical and cultural environment is essential to the building of governance. However the existing research on the historic and cultural environment lack of construction governance or top-down approach is mostly the situation. Therefore construction of collaborative governance is of paramount importance. The purpose of this study, after the conflict shown seo-chon areas identified in the historical and cultural environment are used to analyze the activity of the subject appears in the process to establish the correct collaborative governance. The findings of this study strongly suggest that sustainability is the most important factor, followed by participation, region, and responsibility. As a results from the investigation on the disparity of opinion, the group of resident-experts considered sustainability as the most important factor, and also identify factors that would be needed for a collaboration mechanism to establish an appropriate governance and which main factor should be aimed in preference with the example of Seo-chon area when planning to preserve a historical and cultural environments.
16 MDCT장비에서 Dose Modulation Program인 CareDose와 CareDose4D의 CTDIvol값 비교
이희정(Hee Jeong Lee),권성옥(Seong Ohk Kwon),김주(Joo Kim),서동수(Dong Soo Suh),정성민(Seong Min Chung),임청환(Cheong Hwan Lim) 대한전산화단층기술학회 2005 대한CT영상기술학회지 Vol.7 No.1
Purpose The aim of this study is to apply to clinic a proper technical factor by comparing the value of CTDIvol with dose modulation program of CareDose and CareDose4D in 16 MDCT. Material & Method The value of CTDIvol of constant and variable mA(140mA) was measured in Siemens somatom sensation 16 VB10B CT. The measurement of CTDIvol of CareDose and CareDose4D was performed with technical factor variation. With ART phantom of human shape, CareDose used the Siemens somatom sensation 16 VA70C, and CareDose4D done Siemens somatom sensation 16 VB10B. Result The value of CTDIvol of constant mA and variable mA of CareDose4D was 9.8mGy to 10.92mGy, and 4.13mGy to 5.58mGy, respectively. The value of CTDIvol by kVp variation was minimum 2.53mGy, 2.335mGy at 80kVp and maximum 11.34mGy to 10.18mGy at 140 kVp in the two mode. The value of CTDIvol by table pitch variation in CareDose didn’t vary with 8.14mGy, that by pitch variation of 1, 1.2, 1.5, 2 was 7.38, 7.36, 5.94, 4.60mGy, respectively. The value of CTDIvol by slice thickness variation in CareDose also didn’t vary with 8.14mGy, but CareDose4D increased from 7.26 to 7.35mGy according to increment of thickness. When the tube rotation time was 0.5, 0.75, 1, 1.5 second, the value of CTDivol was 8.14, 8.56, 8.14, 8.21mGy in CareDose and 7.27, 7.30, 7.29, 7.38mGy in CareDose4D, respectively. The value of CTDIvol by scan type was 17.16 and 17.97mGy in CareDose and CareDose4D with sequence mode, and 22.06 and 22.65mGy with spiral mode. Conlclusion The value of CTDivol was decreased by appling CT with dose modulation program for reduction of exposed dose. The value of CTDIvol excluding scan type of technical factor was decreased more in CareDose4D than in CareDose.