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텍스트마이닝을 활용한 SNS 내 미술 전시 감상 후기 분석
조우리(Woori CHO),김봉제(Bongje KIM),손지현(Jihyun SOHN) 한국조형교육학회 2021 造形敎育 Vol.- No.79
본 연구는 텍스트마이닝을 활용해 SNS에 게재된 미술 전시 감상 후기를 분석한다. 이는 미술 작품 제작과 전시 기획, 미술 교육에 시사점을 얻기 위함이다. 분석 대상은 네이버 블로그에 기록된 ‘로즈와일리展’과 ‘유에민쥔展’의 전시 감상 텍스트이 다. 전시 기간 내 게시된 글 중 직접 쓴 감상만을 추출하며 1차 정제 작업하여 ‘로즈와일리展’은 2821건 중 390건, ‘유에민 쥔展’은 916건 중 295건을 수집하였다. 이를 텍스트마이닝한 결과 첫째, 두 전시 후기의 공통된 핵심어를 통해 관람객은 전시 감상 시 ‘색’에 주목하여 언급하고, 감성이 형성되며, 후속적으로 탐구와 관련한 사고 활동을 함을 알 수 있었다. 둘째, CONCOR 분석을 통해 관람객의 감상 후기가 미술 비평 개념인 ‘기술’, ‘분석’, ‘해석’, ‘평가’의 내용으로 군집을 형성함을알 수 있었다. 셋째, N-gram 분석을 통해 관람객의 감상 후기는 각 전시별 홍보자료와 다른 형태의 전시 감상 텍스트를 생성하여, 독자적인 과정으로 진행됨을 추론할 수 있었다. This study analyzes reviews of art exhibitions posted on SNS using text mining. The purpose of the study is to suggest implications for art production, exhibition planning, and art education. The target of the analysis is the exhibition appreciation text of Rosewylie’s and Yueminjun’s, which were posted on NAVER blogs among SNS. Among the posts posted during the exhibition period, only the appreciation written by visitiors was extracted and the first refinement was carried out. So 390 of the 2821 cases were collected in Rosewylie’s and 295 of the 916 cases were collected in Yueminjun’s. As a result, first, through the common keywords of the late two exhibitions, visitors focused on ‘color’ when viewing the exhibition, formed emotions, and subsequently engaged in thinking activities related to exploration. And they also focused primarily on searching for internal cues of the work. Second, the CONCOR analysis showed that visitor’s reviews formed clusters with the contents of the concept of art criticism, ‘description’, ‘analysis’, ‘interpretation’, and ‘evaluation’. Third, through N-gram analysis, visitor’s reviews formed a different form of text from the curatorial materials for the exhibition.
지중 내 TPH, Phenol의 확산방지를 위한 선택적 차수재 제조에 관한 연구
임호진,조우리,오승진,김수희,이재영,HoJin Lim,WooRi Cho,SeungJin Oh,SuHee Kim,JaiYoung Lee 한국지반신소재학회 2024 한국지반신소재학회 논문집 Vol.23 No.1
In this study, a selecvively block barrier was developed to prevent the spread of contaminants (TPH, Phenol) in the ground only when contamination occurs. The materials were used Jumunjin sand, bentonite, polyolefin elastomer and spill hound marine. First, the properties and environmental hazards characteristics of materials were analyzed for evaluated their usability. Then, the possibility of use as a barrier material was confirmed by analyzing the water permeability characteristics that change after 24 hours of contact with contaminants. As a result of the analysis, the pH of each component was similar to the general groundwater pH range. In addition, the toxicity characteristics and the possibility of dissolution of hazardous substances, it was determined that there was no environmental hazard as the content was below the regulation value. Lastly, when comparing the permeability coefficient before and after contact with the contaminant, the permeability coefficient of approximately α × 10<sup>-3</sup>cm/sec before contact was reduced to α × 10<sup>-6</sup>cm/sec after contact with the contaminant.
폐목재를 이용한 KOH, NaOH, ZnCl<sub>2</sub> 화학적 활성화로 생성된 바이오차의 흡착특성에 관한 연구
원민희,조우리,장진만,이재영,MinHee Won,WooRi Cho,Jin Man Chang,Jai-young Lee 한국청정기술학회 2023 청정기술 Vol.29 No.4
흡착을 이용한 오염물질 정화 방법에 많은 관심이 집중되고 있으며, 최근에는 바이오차를 이용하여 유기 및 무기오염물질 제거에도 이용할 수 있다는 연구가 진행되고 있다. 특히 폐자원 바이오매스로 폐목재는 바이오매스 재활용 방안이 필요한 상황으로 폐목재를 이용하여 생성된 바이오차를 흡착용량을 증가하기 위한 방법이 필요하다. 저온고압을 이용하여 에너지 소비가 낮고 수분 제거 전처리가 필요없는 열수가압탄화(Hydrothermal Carbonization, HTC)를 이용하여 탄화하여 바이오차를 생성하고, KOH, NaOH, ZnCl<sub>2</sub> 약품을 이용한 화학적 활성화법으로 생성된 바이오차를 약품별 활성화에 따른 요오드 흡착능, 비표면적, 세공크기, 세공부피, 세공분포 및 SEM을 분석하여 흡착특성을 파악하였다. HTC 300℃, 4 hr에서 생성된 바이오차를 KOH, NaOH, ZnCl<sub>2</sub> 약품별로 활성화로 생성된 바이오차 중 요오드흡착능이 높은 바이오차를 선정하여 비표면적, 세공부피, 세공크기 및 세공분포를 분석한 결과, 비표면적은 774~1.387 m<sup>2</sup>/g으로 활성탄과 같은 높은 비표면적을 나타냈으며, 평균세공크기 21~24 Å 범위의 미세공이 형성되었음을 확인하였다. 또한 SEM 관찰한 결과 활성화에 따라 표면이 일정한 형태의 균일한 세공이 발달되고 세공의 수가 증가하는 것을 확인할 수 있었다. There is a lot of interest in methods for pollutants using adsorption, and recent research is being conducted to show that biochar can be used to remove organic and inorganic pollutants. In particular, wood waste as waste biomass requires a biomass recycling method, and a method to increase the adsorption capacity of biochar produced using wood waste is needed. Biochar is created by Hydrothermal carbonization (HTC) using, which uses low temperature and high pressure, has low energy consumption and does not require moisture removal pretreatment, and biochar is created through chemical activation using KOH, NaOH, and ZnCl<sub>2</sub> chemicals. The adsorption characteristics of biochar were determined by analyzing iodine adsorptivity, specific surface area, pore diameter, pore volume, pore distribution, and SEM according to the activation. The results of analyzing the selecting biochar by activating the biochar produced at HTC 300℃, 4 hr by KOH, NaOH, and ZnCl<sub>2</sub> chemicals, the specific surface area was 774~1.387 m<sup>2</sup>/g, showing a high specific surface area similar to activated carbon, and it was confirmed that micropores with an average pore diameter in the range of 21~24 Å were formed. As a result of SEM observation, the surface was uniform with a certain shape depending on activation. It was confirmed that one pore was developed and the number of pores increased.
오염준설토의 중금속 안정화를 위한 Hydrothermal Reaction의 최적 조건 도출
이선주,안현규,조우리,김수희,이재영,Lee Sun-Ju,An Hyeon-Kyu,Cho Woori,Kim Su-Hee,Lee Jai-Young 한국지하수토양환경학회 2024 지하수토양환경 Vol.29 No.1
Hydrothermal Reaction (HTR) was applied for the stabilization of contaminated soil with heavy metals, and then the test determined the optimal conditions for HTR. After HTR, the concentration of heavy metals in the contaminated soil increased. However, it was observed that the leachability potential significantly decreased as determined by TCLP and SPLP tests. This decrease was attributed to a decline in fractions 1-2 and an increase in fractions 3-4 as revealed by sequential extraction procedure. Due to the mineralogical characteristics of the dredged soil, distinct changes were not evident in the five-stage fraction. Therefore, it is deemed necessary to understand the chemical and mineralogical characteristics of the target soil for HTR application in order to selectively address contaminants. Comparison among operating conditions determined the optimal condition to be at 240℃ for one hour.
열수가압탄화를 이용한 커피찌꺼기 Biochar의 최적 생성 및 Toluene 흡착 평가
김장영 ( Jang Yeong Kim ),조우리 ( Woori Cho ),이재영 ( Jai-young Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2021 한국폐기물자원순환학회지 Vol.38 No.2
In this study, biochar was created from coffee wastes with a high moisture content by applying a hydrothermal carbonization (HTC) method. Environmental problems during the treatment and optimal conditions were derived based on the adsorption performance of biochar. In addition, we compared biochar and activated biochar to evaluate their potential as adsorbents for VOCs by chemical activation using KOH to activate micro-secessions of biochar. The highest yield was obtained at 260 ℃ for 1 h and the iodine adsorption performance at approximately 687.11 mg/L. Therefore, the HTC optimal reaction conditions using coffee wastes increased its potential for use as an adsorbent. KOH was used as a chemical activator to activate the biochar under optimal generative conditions. A second batch test was conducted and analyzed for yield and iodine adsorption performance. The second batch test showed that the optimal activation temperature was about 700℃, the optimal mixing ratio of biochar and KOH was 1 : 0.5, and the optimal activation time was 1 h for 1,105.33 mg/g iodine adsorption performance. Toluene adsorption experiments were conducted to evaluate the VOC adsorption potential of coffee wastes, biochar, activated biochar, and GAC (Granular Activated Charcoal, Untreated). As a result, activated biochar, which was adsorbed at 240 minutes, was considered a more efficient adsorbent than coffee wastes, biochar, and GAC. Therefore, this study conducted an adsorbent evaluation of activated biochar produced from the HTC process. The resultant biochar showed higher efficiency in a shorter period and was sufficient to be used as an adsorbent.
석탄가스화용융슬래그 및 배연탈황석고를 이용한 중금속(Pb) 오염토양의 안정화 가능성 평가
이진주 ( Jin Ju Lee ),조우리 ( Woori Cho ),장진만 ( Jin-man Chang ),이재영 ( Jai-young Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2021 한국폐기물자원순환학회지 Vol.38 No.3
In this study, the feasibility of recycling coal gasification slag and flue gas desulfurization gypsum as a stabilizer for lead-contaminated soil is evaluated. The study is divided into three stages. First, the heavy metal content and leachability of the coal gasification slag and flue gas desulfurization gypsum were assessed to confirm their environmental safety as a recycling material. Second, the stabilization of lead-contaminated soil was evaluated via dissolution testing by mixing either slag or gypsum with artificially contaminated soil at levels of 1%, 4%, 7%, and 10%. Finally, XRD and SEMEDS analysis was conducted to identify the stabilization mechanisms using the soil and stabilizer mixture cured for 28 days. It was found that the slag and gypsum had no heavy metal content or elution, meaning they were suitable for recycling in accordance with Korean waste recycling criteria. When the slag and gypsum were mixed independently with the contaminated soil, it was found that an application ratio of 7% had the highest stabilization efficiency, thus this was selected as the optimal mixing ratio. XRD analysis of soil samples stabilized for 28 days with the addition of 7% slag and gypsum, peaks for ettringite (3CaO·Al<sub>2</sub>O<sub>3</sub>·3CaSO<sub>4</sub>·32H<sub>2</sub>O), calcite (CaCO<sub>3</sub>), and portlandite (Ca(OH)<sub>2</sub>) were observed. Through SEM-EDS analysis, acicular ettringite with a structure suitable for adsorbing or solid solution of heavy metals was identified. Therefore, in this study, the potential of coal gasification slag and flue gas desulfurization gypsum as stabilizers in lead-contaminated soil was confirmed, representing an economical and environmentally friendly means of recycling by-products from power plants.