문화도시조성사업이 지역경제에 미치는 영향에 관한 연구

최지연,Choi, Ji-Yeon 한국전자통신학회 2012 한국전자통신학회 논문지 Vol.7 No.2

Culture is the essential requisite to improve the resource of city competitiveness and the quality of life. The modern society hope to make the city, more regional and able to be expressed creativity, combining with culture industries for the purpose continuous economic growth and regeneration city. This development industry of cultural city constructed employment and the production of income due to the operations by infra-construction. And It inspired civic awareness about Cultural History. In addition, It presented the effective direction of national aspects caused by improving the identity and the value of ethnicity, culture.

골유착성 치과 임플란트의 생존율에 관한 임상적 연구

최지연,고세욱,류현욱,Choi, Ji-Yeon,Koh, Se-Wook,Ryu, Hwun-Wook 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.4

Objectives: The aim of the present review was to evaluate survival rate and various factors associated with survival of osseointegrated implants. Patients and methods: The clinical comparisons were performed to evaluate survival rate of 794 endosseous implants that had been inserted between 2004 through 2008 in relation to sex and age of patients, position of implant, implant system and surface characteristics, length and diameter of implant, and bone graft technique. Results: The survival rate of implant was 94.3% in posterior area of maxilla and 98.6% in posterior area of mandible by position of implant, a statistically significant difference. As to diameter of implant, survival rate was 98.4% between the 4.0 and 4.5 mm and 75.0% in larger than 5.0 mm, that was statistically significant difference. There was a statistically significant difference regard to bone graft and surgical technique. The implant survival rate was 89.0% in a placement site which performed sinus lifting, and in case of implant placement with guided bone regeneration technique and without bone grafting was 97.6% and 100% each. Conclusion: According to these findings, this study establishes a relationship between survival rate of implant and position, surface characteristics, diameter of implant and bone graft technique.

토양내 오염된 2,4,6-trinitrotoluene (TNT)의 Eisenia fetida에 대한 독성 및 생물흡수

최지연,오상화,신원식,Choi, Jiyeon,Oh, Sanghwa,Shin, Won Sik 한국지하수토양환경학회 2015 지하수토양환경 Vol.20 No.6

Toxicity and uptake of 2,4,6-trinitrotoluene (TNT) in three different soils (OECD soil, natural soil and loess) to earthworm (Eisenia fetida) were investigated at several different spiked concentrations of TNT (0 to 200 mg/kg for OECD and natural soils, and 0 to 35 mg/kg for loess) and for different exposure periods (7, 14, 21, and 28 d). The LC<SUB>50</SUB> values for 7 d exposure were 160.1, 159.4, and 28.81 mg/kg for OECD soil, natural soil, and loess, respectively. The LC<SUB>50</SUB> values for 14, 21, and 28 d exposure were almost the same as those for 7 d exposure, showing that 7 d exposure time was enough to decide the toxicity (LC<SUB>50</SUB>) of TNT to Eisenia fetida, because the highest concentration of TNT in earthworm body was observed within around 5 d. The LC<SUB>50</SUB> and uptake of TNT in loess were higher than those in OECD and natural soil. The uptake of TNT to the earthworm were correlated well with the initial concentration of TNT in the soil and TNT porewater concentration (R<SUP>2</SUP>> 0.9 in OECD, natural, and loess). The concentration of TNT in earthworm body decreased after 5 d, possibly caused by natural degradation of TNT by soil bacteria as well as earthworm.

톱밥배지에서 재배된 표고버섯 품종별 이화학적 성분 비교

최지연,김민선,Choi, Ji Yeon,Kim, Min-Sun 한국버섯학회 2021 한국버섯학회지 Vol.19 No.3

With the development of sawdust medium cultivation technology, Lentinula edodes (shiitake mushroom) has become the most extensively produced and consumed mushroom globally. In this study, the approximate composition, nutritional components, and bioactive compounds of L. edodes were analyzed and compared for the five sawdust-cultivated shiitake mushrooms cultivars namely Sanjo701ho, Sanjo707ho, Sanjo715ho, Chamaram, and L808. The approximate range of the composition of freeze-dried shiitake mushrooms was 4.06-5.92 g/100 g of ash, 0.75-1.02 g/100 g of crude fat, and 21.24-29.15 g/100 g of crude protein. Sanjo701ho had the highest trehalose content (9.60±0.08 g/100 g), total polyphenol content (3.49±0.04 mg GAE/g), and total flavonoid content (1.33±0.03 mg QE/g) among the other shiitake mushroom cultivars. The total amino acid content was as follows: glutamic acid>aspartic acid>leucine. Glycine, alanine, valine, isoleucine, leucine, and phenylalanine contents were significantly decreased in the following sequence: Sanjo707ho, Sanjo715ho, Sanjo701ho, Chamaram, and L808. Crude protein, trehalose, and six types of amino acids were identified as classification indicators for the five cultivars of sawdust-cultivated shiitake mushrooms.

다환방향족 탄화수소(PAHs) 오염토양의 과황산 산화 시 철 활성화제의 영향

최지연,박정도,신원식,Choi, Jiyeon,Park, Jungdo,Shin, Won Sik 한국지하수토양환경학회 2020 지하수토양환경 Vol.25 No.1

PAHs commonly found in industrial sites such as manufactured gas plants (MGP) are potentially toxic, mutagenic and carcinogenic, and thus require immediate remediation. In-situ chemical oxidation (ISCO) is known as a highly efficient technology for soil and groundwater remediation. Among the several types of oxidants utilized in ISCO, persulfate has gained significant attention in recent years. Peroxydisulfate ion (S₂O₈^2-) is a strong oxidant with very high redox potential (E⁰ = 2.01 V). When mixed with Fe²⁺, it is capable of forming the sulfate radical (SO₄^-·) that has an even higher redox potential (E⁰ = 2.6 V). In this study, the influence of various iron activators on the persulfate oxidation of PAHs in contaminated soils was investigated. Several iron sources such as ferrous sulfate (FeSO₄), ferrous sulfide (FeS) and zero-valent iron (Fe(0)) were tested as a persulfate activator. Acenaphthene (ANE), dibenzofuran (DBF) and fluorene (FLE) were selected as model compounds because they were the dominant PAHs found in the field-contaminated soil collected from a MGP site. Oxidation kinetics of these PAHs in an artificially contaminated soil and the PAH-contaminated field soil were investigated. For all soils, Fe(0) was the most effective iron activator. The maximum PAHs removal rate in Fe(0)-mediated reactions was 92.7% for ANE, 83.0% for FLE, and 59.3% for DBF in the artificially contaminated soil, while the removal rate of total PAHs was 72.7% in the field-contaminated soil. To promote the iron activator effect, the effects of hydroxylamine as a reducing agent on reduction of Fe³⁺ to Fe²⁺, and EDTA and pyrophosphate as chelating agents on iron stabilization in persulfate oxidation were also investigated. As hydroxylamine and chelating agents (EDTA, pyrophosphate) dosage increased, the individual PAH removal rate in the artificially contaminated soil and the total PAHs removal rate in the field-contaminated soil increased.

시뮬레이션을 이용한 성형외과 예약패턴 분석

최지연,정예림,박선주,정승화,Choi, Jiyeon,Chung, Yerim,Park, Sunju,Chung, Seungwha 한국시뮬레이션학회 2018 한국시뮬레이션학회 논문지 Vol.27 No.1

Generally, solutions that can increase patients' satisfaction are in conflict with the solutions that can increase the satisfaction and profitability of the medical personnels. In this paper, we compare appointment patterns using multiple performance measures that take into account both hospital's position and customers' position, and propose the best appointment pattern especially for an efficient scheduling in a plastic surgery clinic. A simulation model using ARENA is designed based on real hospital data. Based on this model, we compare 5 appointment patterns. To check the robustness of the appointment patterns, we have experimented on various appointment situations by considering peak, extreme peak seasons, and peak, off-peak days. We found that Triangle-like pattern turned out to be most efficient regardless of appointment situations.

캐릭터 육성 게임을 통한 수면 건강관리

최지연(Choi Jiyeon),정찬영(Jung chanyeong),최영주(Choi youngju),최은진(Choi Eunjin),신혜원(Sin hyewon),광휘(TRUONG QUANGHUY),박세진(Park Sejin) 한국정보기술학회 2023 Proceedings of KIIT Conference Vol.2023 No.6

문화예술을 활용한 도시재생의 공간디자인에 관한 사례 비교연구

최지연 ( Choi Jeeyeon ) 한국공간디자인학회 2021 한국공간디자인학회논문집 Vol.16 No.4

(Background and Purpose) This study compares and researches existing cases of urban regeneration that achieved successful results by utilizing foreign culture and arts and design methods of each urban regeneration case by referring to urban regeneration cases that utilize culture and arts of similar purposes in Korea. (Method) As a research method, first, this study conducts a theoretical review of urban regeneration. The methods of space design utilizing culture and arts found from urban regeneration cases in Korea and overseas are analyzed and compared, respectively. The selected cases are The High Line of the US and Seoullo7017, Tate Modern of UK and Mapo Oil Tank Culture Park, and Zeche Zollverein of Germany and Samtan Art Mine. (Results) The High Line and Seoullo7017 have similar uses before and after regeneration. The spaces were regenerated from railroad and driveways to sidewalks that serve as parks. In the High Line, many facilities borrowed from and utilized the past places and roles as a design concept. Seoullo7017 did not sufficiently utilize the unique location where symbolism or temporality of the overpass of Seoul Station in the past could be experienced in terms of the spatial design. Tate Modern and Mapo Oil Tank Culture Park exhibit the commonality in that both utilized the distinctive spatial characteristics as a cultural space that triggers communication of the present, time, and memory. Tate Modern has been regenerated into a distinguished art museum by utilizing the vast space of a thermal power plant, while, similarly, the space design of Mapo Oil Tank Culture Park used the original characteristics of the oil tank. In both Zollverein and Samtan Art Mine cases, modern space works and artworks were arranged, while the dark and bleak image of a mine was utilized as diverse art spaces along with artworks. The difference is that Zollverein has a stronger aspect of programs that attempt to 'utilize' space continuously and to a greater extent. Samtan Art Mine showed a stronger aspect of aiming at cultural and artistic utilization of the place's characteristics within the existing space. (Conclusions) First, spatiality appears as a three-dimensional application that provides the horizontal and vertical composition and changes of sequence in the existing facility's space. Second, the space that leads symbolism is exhibited to a greater extent as a space that contains unique memories and historical stories through the distinctive harmony of the store of the place with modern elements. Third, temporality is shown as an exhibition method that induces movements to embody the continuity of perception, enabling temporal flow experience.

교육공간으로서 정원의 의미 탐색일상의 미적 참여를 중심으로

최지연(Choi, Jiyeon) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.24

이 연구의 목적은 학교에 부속된 교육공간인 정원이 갖는 교육적 의미를 탐색하고자 수행되었다. 연구 목적을 달성하기 위해 교육공간의 개념을 고찰하였고, 일상의 미학, 정원기반학습, 참여 미학에 근거하여 정원의 교육적 의미를 제안하였다. 연구 결과는 다음과 같다. 정원은 일상의 삶을 교과의 관점으로 이해하고 바라볼 수 있게 해주며, 교과를 살아있게 만든다. 둘째, 인간에게는 보고 듣는 감각인 원근 감각과 맛보고, 냄새 맡고, 촉감으로 느끼는 근접 감각이 공존한다. 원근 감각 활용이 빈번한 학교교육에서 정원을 기반으로 한 공부는 근접 감각과 원근 감각을 균형 있게 사용하도록 도와줌으로써 아름다움을 체험하는 공감각을 활용하게 해준다. 셋째, 정원은 자연스러운 학습 환경을 제공한다. 따라서 정원에서의 학습은 학습자의 상상력, 관심, 흥미를 토대로 자신만의 감상과 경험이 가능하다. 넷째, 정원은 학습자로 하여금 바라만 보도록 하는 관조를 넘어 직접 무엇인가 행동을 하도록 만들어준다. 다섯째, 정원에서의 참여는 신체적 참여와 연관하여 이해할 수 있었다. 근육의 움직임, 다양한 공감각을 활용한 참여는 다양한 지각을 통합할 수 있게 해주었다. 마지막으로 정원기반학습에의 참여는 일상의 삶과 학습을 연속성 있게 바라보도록 해줌으로써 일상의 다양한 측면이 학습의 국면으로 통합되면서 학습과 일상이 각각의 의미를 갖도록 돕는 역할을 수행하였다. The purpose of this study was to explore the educational implications of gardens, an educational space attached to schools. To achieve the purpose of this study, the concept of educational space was reviewed, and the educational meaning of the gardens was proposed based on everyday aesthetics, garden-based learning, and engagement aesthetics. The results of the study were: First, the gardens helped students understand their daily lives from subjects’ view and made the subjects in curriculum lively. Second, humans had distal and proximal senses. Under school education, which often uses a distal sense, the garden helped balance of both senses. Third, the garden provided a natural learning environment. Thus, learning in the garden was possible based on the learner s imagination, concern, and interest. Fourth, the gardens made it possible for learners to do something directly beyond contemplation to look at them. Fifth, participation in the garden was understood in relation to physical participation. Muscle motions and participation using various synesthesia enabled the integration of various perceptions. Finally, participation in the garden-based learning has helped to integrate various aspects of everyday life into the learning phase by allowing us to look at everyday life and learning continuously.

교육공간으로서 정원의 의미 탐색: 정원교육 강좌 ‘비밀의 정원’ 운영 사례

최지연(Choi, Jiyeon) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.23

이 연구의 목적은 교육 시설의 부속 공간으로 조성된 정원이 갖는 교육적 의미를 탐색하고자 수행되었다. 정원은 교육공간이라는 데에는 이견이 없었으나, 건물에 부속된 물리적 공간으로 한정되어나 잠재적 교육과정으로 학생과 교사의 성장에 간접적인 영향을 미친다고 여겨져 왔다. 이에 이 연구는 정원의 교육적 의미 탐색을 위해 ‘비밀의 정원’이라는 정원 교육 강좌를 개발하고 20명의 수강생과 연구자가 함께 정원을 관찰, 감상하고, 정원에 대한 시, 음악, 음식 등을 음미하며, 정원 수업에서의 경험을 표상하여 공유하는 과정으로 한 학기 15주 동안 강좌를 운영하였다. 수업이 이루어진 곳은 연구자가 근무하는 충북의 한 교원양성대학의 정원으로 조성된 지 30년 정도 된 곳이며, 한국에서 아름다운 길로 선정된 적도 있으며, 정원이 아름답고 잘 관리되어 조경학과 학생 실습처 중 하나다. 20명의 수강생 중 연구에는 6명이 참여 하였으며, 희망자에 한하여 자신의 수업 결과를 공유하고 인터뷰하였다. 이 강좌를 통해 연구참여자들은 익숙한 생활의 장이었던 정원을 낯설게 보게 되면서 정원 속 자연에 대해 질문을 제기하고 이에 대한 답을 찾아가는 진정한 공부에 눈뜨게 되었으며, 자연을 보호의 대상이 아니라 자신들과 동일한 생명체임을 공감하고 경탄하면서 자신을 비추는 거울로 함께 존중되어야 함을 인식하였고, 인류가 조성한 정원 속에는 수목, 석물, 환경의 배치에 따라 상징이 부여되고 그것이 문화를 이루어왔음을 알게 되었다고 보고하였다. 이러한 강좌 운영 사례를 통해 생활의 장인 정원은 살아있는 교과서이며, 정원기반교육 등에서 주장하는 바와 같이 다양한 교과의 공부가 정원을 통해 연계될 수 있다는 점을 확인할 수 있었다. 결론적으로 교육공간으로서 정원의 의미는 인간의 삶에 필수적인 자연의 변화를 체험할 수 있도록 인간과 자연을 연결하는 매개체 역할을 하며, 관조의 경험을 통해 교과의 본질, 학교의 본질을 되새기는 장소로서의 의미를 갖는다고 할 수 있다. The purpose of this study was to explore the educational meaning of gardens in educational facilities. The gardens have been recognized as educational spaces. However, They have been regarded as the space of a building or the place of realization of a potential curriculum, but they have not been recognized as direct educational contents. In this study, a garden education course called Secret Garden was developed for exploring the educational meaning of the garden. During the semester, 20 students and one researcher shared their views on gardening, enjoying poetry, music, fruits from gardens, and representing their experience in gardening classes. The place where the class was held was the garden of a teacher training university in Chungbuk. Six of the students were accepted as participants, and their results were shared and interviewed. Through these lessons, the participants became unfamiliar with the garden, which was a familiar living place. They recognized authentic learning as they questioned and answered nature in the garden. They learned that nature was not the object of protection, but that they were the same creatures as themselves, and that they should respect nature as a mirror of their own. They also knew that symbols and cultures were in the garden created by mankind. In conclusion, the meanings of the gardens as educational space were as follows. First, the garden served as a media between man and nature so that he could experience the natural changes necessary for human life. Second, the garden had an important meaning as a place to reflect on the nature of the school through the experience of contemplatio.