토픽모델링을 활용한 재미한글학교에 대한 학교장의 인식 탐색

김한나,이재덕,이영신 한국홀리스틱융합교육학회 2024 홀리스틱융합교육연구 Vol.28 No.1

This research aims to extract key keywords perceived by school principals in the context of Korean Language Schools in the United States. Schools and analyze the topic modeling of their perceptions. After reviewing previous studies related to the perceptions of Korean language schools and their constituents, interviews were conducted with principals currently in service of Korean Language Schools in the United States. After data cleaning, keyword frequency analysis, word cloud visualization, centrality analysis, and topic modeling analysis were conducted. The research results showed that the key perception keywords of school principals regarding Korean Language Schools in the United States ranked highest as students, teachers, Korean language, school, and Korea. According to centrality analysis, keywords like students, teachers, Korean language, and school exhibited numerous connection relationships, short connection distances, many connections with important nodes, and acted as mediators. Finally, the topics were named as Topic1 to Topic4, including interpersonal relationships, mutual cooperation, school management, teaching and learning, and curriculum. Keywords for each group were extracted, and topic modeling was conducted. The analysis revealed that Topic1, Topic5, Topic2, and Topic3 groups were connected, centered around keywords such as foreign, textbooks, and teacher recruitment, while Topic4 group appeared separately without connections to other groups. Based on the results, it is expected that these findings can be used as a resource to understand the actual state of Korean Language Schools in the United States and contribute to their development in the future. 이 연구는 학교장이 인식하는 재미한글학교에 대한 핵심키워드를 도출하고, 학교장 인식의 토픽모델링이 어떠한지 분석하는 데 목적이 있다. 한글학교와 학교구성원의 인식과 관련된 선행연구 검토 후, 재미한글학교에 대한 학교장의 인식 분석을 위해 재직 중인 3명의 학교장을 대상으로 면담을 실시하였다. 데이터 클리닝을 거쳐 키워드 빈도분석, 워드클라우드 시각화, 중심성 분석, 토픽모델링 분석을 실시하였다. 연구 결과, 재미한글학교에 대한 학교장의 인식 키워드는 학생, 교사, 한국어, 학교, 한국의 순으로 높게 나타났고, 주말학교, 교회의 키워드도 도출되었다. 중심성 분석 결과, 학생, 교사, 한국어, 학교의 키워드가 많은 연결 관계, 짧은 연결 거리, 중요한 노드와의 많은 연결, 매개역할을 하는 것으로 나타났다. 토픽모델링 분석은 Topic을 다섯 개로 설정하여 각 그룹의 키워드를 도출하였으며, 각각 토픽명을 인적연대, 상호협력, 학교경영, 교수학습, 교육과정으로 명명하였다. 이와 같은 재미한글학교에 대한 학교장의 인식분석을 통해 도출된 결과를 바탕으로 향후 재미한글학교의 실질적인 모습을 파악하고, 재미한글학교의 발전을 위한 자료로 활용하기를 기대한다.

Synergistic effects of heat and diatomaceous earth treatment for the control of Plodia interpunctella (Lepidoptera: Pyralidae)

김한나,유연수,이경열 한국곤충학회 2014 Entomological Research Vol.44 No.3

Plodia interpunctella is a major economic pest that commonly infests most stored and processed agricultural products. Currently, heating at 50–60°C for at least 48 h is applied in facilities for disinfestation. However, this condition requires a great deal of time and expense. To improve the control efficiency of this system, we conducted combined treatments with heating and diatomaceous earth (DE), which is known to be toxic to pest insects. The DE effect was compared to heating at 25°C or 40°C to wandering fifth instar larvae, which is the stage most tolerant to heat. When larvae were brushed with DE powder, mortality was only 15.0–18.3% at 25°C for 10 days, but rapidly increased to 100% at 40°C within 4 h post‐treatment. In addition, when larvae were kept in a plastic cage with DE [4 mg/L (w/v)], their mortality was 100% in 24 h at 40°C post‐treatment; otherwise mortality was only 8.8% without DE. Thus, the control efficiency of heating significantly improved with the combination of DE. These effects increased further at higher temperatures and with longer exposure. Our results clearly showed that DE treatment showed synergistic effects with heating systems for the control of P. interpunctella.

Preparation of hybrids from colloidal nanosilicas poly(propylene glycol)

김한나,이대수 한국고분자학회 2011 한국고분자학회 학술대회 연구논문 초록집 Vol.2011 No.1

어머니의 영아에 대한 애착이 영아 발달 수준에 미치는 영향

김한나,서소정 한국보육학회 2011 한국보육학회 학술대회자료집 Vol.- No.-

갑상선암 수술 환자들이 원하는 교육은?

김한나,박윤희,오영자,박경아,김인숙,우금명,김법우,이용상,장항석,박정수 대한갑상선학회 2013 International Journal of Thyroidology Vol.6 No.2

Background and Objectives: To prevent getting wrong information and improve high quality of life, it is necessary to provide accurate information and patient education. This study aimed to collect basic data and develop educational program for thyroid cancer patient by understanding their educational needs. Materials and Methods: Between April 16 and June 15, 2012, 159 patients who underwent thyroid cancer surgery were enrolled. This survey consisted of 5 areas including management of the symptom and the complication after surgery, postoperative wound and dietary management, treatment plan after discharge, medication management, and daily life. Results: The most common way for the patients to acquire information about the disease was Internet and the patients who used INTERNET as their information source were 54.7%. Doctors (76.1%) and nurses (21.4%) were the preferred educators for the patients, and small group education was the preferred education method. Specifically the need for “management of the symptom and the complication after surgery” was the highest (3.33), followed by “treatment plan after discharge” (3.31), “medication management” (3.19), “postoperative wound and dietary management” (3.17). Conclusion: Medical team including doctors and nurses should be the center to activate small group education for patients. Professional and individualized education program should be developed to give the proper education to patients and their family.

글로벌 금융위기 이후 코스닥 시장의 현금배당에 대한 실증분석 : 제조업과 비제조업의 비교를 중심으로

김한나,최돈승 한국전문경영인학회 2017 專門經營人硏究 Vol.20 No.4

This study analyzed cash dividend in KOSDAQ market from 2009 to 2016 after global financial crisis. We implement the comparative analysis through t-test according to industries, which selected by the number of sample. We calculate dividend yield, payout ratio, stock price change rate on ex-dividend date, and stock price drop rate by industries for the comparative analysis(manufacturing vs. non-manufacturing). There are statistically significant differences between manufacturing and non-manufacturing industries in dividend yield and payout ratio. Furthermore, as results, this paper argues that market efficiency and ex-dividend effect are also possible to be different by industries, which have each individual payout ratio. Thus, in KOSDAQ market, the management team and investor should consider the inter-industry difference in market efficiency and ex-dividend day behavior of stock prices to establish right dividend policies and investment strategies.

직업 안전 및 보건 관리: 혈액 매개 감염원

김한나,이아람,전현선,배성숙 한국치위생감염관리학회 2015 한국임상치위생학회지 Vol.3 No.1

국내 원전의 알파 선원 내부오염 가능성 분석

김한나,김정인,이병일,임영기 대한방사선방어학회 2011 대한방사선방어학회 학술발표회 논문요약집 Vol.2011 No.11

사용후 핵연료 저장조 지역의 우라늄 분석

김한나,김정인,이병일,윤석원,임영기 대한방사선방어학회 2012 대한방사선방어학회 학술발표회 논문요약집 Vol.2012 No.04

화랑(畫廊)에 대한 재고찰 –1970년대를 중심으로-

김한나 미술사연구회 2018 미술사연구 Vol.- No.35

Despite the intimate link between galleries and art history, the former have in many ways beenregarded merely as spaces for buying and selling artworks, with little research having been conductedinto their roles and activity. Galleries played a particularly important role in Korean contemporary arthistory in the 1970s. Exhibitions held in galleries at this time gave rise to crucial events in Koreancontemporary art, including the development of diverse experimental art by avant-garde groups, thefirst exhibitions of monochrome painting, proposed starting points for Korean contemporary art, thepublishing of critical and other art magazines, retrospectives of works by modern artists such as LeeJung-seob and Park Soo-keun and publication of books of their paintings, the transition to a newgeneration of Oriental-style painters, the development of contemporary real-scenery landscape painting,and the establishment of prints as a genre. This study is an examination of major exhibitions held by Myongdong Gallery, Gallery Hyundaiand Dong San Bang Gallery, three venues that opened in the 1970s and became intimatelyconnected to artistic trends in this period through their exhibitions and other activities. MyongdongGallery played a role in publicizing avant-garde artists in the 1970s. Dong San Bang Gallerysuccessfully achieved a change in generations by focusing on established artists in their 30s and 40s,and played a leading role in discovering new artists. Gallery Hyundai held exhibitions of works bymodern artists such as Park Soo-keun and Lee Jung-seob and published books of their paintings,forming art historical discourses and bringing renewed attention for these artists in the art world andamong the general public. Through their exhibitions, these galleries actively distributed contemporaryartworks in an art market previously dominated by antique works. They also helped spread artisticculture among the general public by publishing magazines such as Hyundai misul (“Contemporaryart”), Hwarang (“Gallery”) and Misul chunchu (“Art Year”). It is thus clear that galleries in SouthKorea in the 1970s functioned as multipurpose venues, playing roles of museums, critics andcommercial spaces at a time when the country lacked sufficient art museums. 화랑은 미술사와 매우 긴밀한 관계에 있음에도 불구하고 단순하게 미술품을 매매하는 공간으로만 평가되면서 그 역할과 활동이 연구되지 못한 측면이 있다. 특히 1970년대에는 한국 현대미술사에서 매우 중요한 역할을 담당하였다. 1970년대 화랑에서 열린 전시를 통해 전위미술 그룹의 다양한 실험 미술 전개, 단색조 회화의 첫 발표, 한국 현대미술 기점 제시, 미술비평지를 비롯한 미술 잡지 창간, 이중섭과 박수근을 비롯한 근대 미술 작가 회고전과 화집 발간, 동양화단의 세대교체와 현대 실경산수 전개, 판화의 장르화 등 한국 현대미술의 중요한 사건들이 나타나게 된다. 본고에서는 1970년대 개관한 화랑 가운데 전시 활동을 통하여 당시 미술계 흐름과 깊은 관련을 보이며 뚜렷한 족적을 남긴 명동화랑, 현대화랑, 동산방화랑의 주요 전시 활동들을 고찰하였다. 1970년대 명동화랑은 전위미술 작가들의 발표기관으로 작용하였고, 동산방화랑은 30·40대 동양화 중견작가들을 집중적으로 조명하여 동양화단 세대교체를 성공적으로 견인하여 미술계의 신진작가 발굴에 앞장섰으며, 현대화랑은 박수근, 이중섭 등 근대 미술 작가 전시 개최와 화집 발간을 통해서는 미술사적 담론을 형성하여 작가가 미술계와 대중에게 재조명될 수 있는 계기를 마련하였다. 그리고 고미술품 중심의 미술시장에서 전시를 통해 동시대 미술품을 적극적으로 유통시켰으며, 『현대미술』, 『화랑』, 『미술춘추』 등의 잡지를 창간하여 대중에게 미술문화를 전파하였다. 이를 통해 1970년대 화랑이 미술관이 부족한 미술계 상황 속에서 미술관, 미술평론, 상업 공간 등의 다 기능을 수행하는 복합공간이었음을 확인 할 수 있었다.