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텍스트 마이닝을 활용한 4차 산업혁명 관련 보도분석: 부산 지역일간지와 중앙일간지 비교를 중심으로
정유미(Yumi Jung),김정환(Junghwan Kim),박종화(Jonghwa Park) 부산울산경남언론학회 2021 지역과 커뮤니케이션 Vol.25 No.4
본 연구는 미래 먹거리라고 하는 4차 산업혁명에 대하여 중앙일간지와 부산 지역일간지에서 다루고 있는 기사를 분석하여 주요 의제와 내용의 차이를 살펴보았다. 특히 지방정부에서 4차 산업혁명을 지역특화산업 발전과 인구증가방안 등 도시발전을 위한 주요의제로 삼고 있는 상황에서, 부산 지역일간지에서 4차 산업혁명과 관련해 지역에 특화된 논의가 충분히 이루어지고 있는지 중앙일간지와의 비교를 통해 검토하고자 하였다. 이를 위해 중앙일간지 <중앙일보>, <조선일보>기사 4,770개, 부산 지역일간지 <부산일보>, <국제신문> 기사 2,204개를 바탕으로 텍스트 마이닝의 한 기법인 토픽모델링과 언어 네트워크 분석을 활용하여 중앙지와 지역지에서 언급되는 주요 주제와 그 관계성을 살펴보았다. 중앙일간지의 토픽을 살펴본 결과 4차 산업혁명과 관련하여 정부의 정책 기조와 경제적 영향과 대응, 교육 등 전반적이고 거시적인 수준에서 논의하고 있음을 확인하였으며, 네트워크 분석에서도 중심성이 높은 단어들을 중심으로 각 분야별 주제어들이 광범위하게 연결되어 있었다. 반면, 부산 지역일간지에서는 ‘해양·수산 인공지능 활용’이나 ‘교육프로그램 운영’ 등 중앙일간지보다 좀 더 지역적이고 목적 지향적인 주제들이 나타나긴 했지만, 주제어들끼리의 관계성이 약해 정책소개나 기술소개 등 단편적인 기사가 많은 것으로 나타났다. This study analyzed online news article on the 4<SUP>th</SUP> Industry Revolution covered by the national and local daily newspapers, and looked at the differences in topics covered by the national and local newspapers. Since the 4<SUP>th</SUP> Industry Revolution is one of the main agendas of local government‘s development plan, we also examined whether the local newspapers discussed enough local agendas and issues. For the study, we collected 4,770 news articles from JoongAng Ilbo, Chosun Ilbo and 2,204 news articles from Busan Ilbo, Kookje Daily News. We used topic modeling and semantic network analysis of text mining to examine news topics mentioned in the central and local newspapers. The result showed that national newspapers reported the 4th Industrial Revolution with more macro level issues compared to local newspapers, including the government"s policy stance and the economic impact of the 4th Industrial Revolution. Local newspapers mentioned more localized topics such as marin industry and specialized education, but the key words from the topics were mostly about introduction or needs of the 4<SUP>th</SUP> Industry Revolution in the fields, not about issues or details in the topics.
Development of CAPS Marker Associated with Russet Formation in Asian Pear (Pyrus spp.)
Yumi Kim,Sewon Oh,Jung Kim,Haemi Cho,Daeil Kim 한국원예학회 2021 한국원예학회 학술발표요지 Vol.2021 No.10
The skin colors of Asian pear have been classified into three types: green, russet, and intermediated of green and russet. The spotted russet on pear fruit declines commercial quality value. The russet formation is one of the important considerations in pear breeding. Therefore, the development of molecular marker is required to distinguish russet formation in early stage. The present study was performed to develop cleaved amplified polymorphic sequence (CAPS) marker using ‘Whangkeumbae’ (Pyrus pyrifolia, non-russet), ‘Minibae’ (P. hybrid, russet), and their 88 F1 individuals. The russet formation was investigated using three fruits of each individual through photoshop software. More than 25% russet formation was regarded as abundant russet on pear skin. The CAPS marker was designed using identified single nucleotide polymorphism locus in the previous study. PCR was performed with designed CAPS marker (CBp08ca01). Polymorphism of PCR amplicon was observed using restriction enzyme RsaI and 2.5% agarose gel electrophoresis. As a result of CBp08ca01, DNA amplicon was generated with 398 bp in ‘Whangkeumbae’ (non-russet). On the other hand, DNA amplicon was separated by 134 and 264 bp in ‘Minibae’ (russet). Sixty-three individuals (71.6%) out of 88 F1 individuals corresponded with the expected DNA amplicon size. The developed CAPS marker related to russet formation could select abundant or scarce russet in the juvenile period. Thus, this marker will contribute to increasing the breeding efficiency in pear.
Efficacy of Mastocheck for Screening of Early Breast Cancer: Comparison with Screening Mammography
Yumi Kim,Hyeong-Gon Moon,Han-Byoel Lee,Woo Kyung Moon,Nariya Cho,Jung-Min Chang,Wonshik Han,Dong-Young Noh 한국유방암학회 2019 Journal of Breast Disease Vol.7 No.2
Purpose: This study was designed to verify the effectiveness of Mastocheck, a new diagnostic tool developed with proteomics techniques using plasma proteins. In addition, checked the current state of mammography used for breast cancer screening. Methods: A total of 305 cases were analyzed (normal 122, breast cancer 183) and used for validation after Mastocheck development. First, screening mammograms of normal patients and pre-diagnosis mammography of cancer patients were reviewed retrospectively. The results were compared with Mastocheck, a newly developed blood test. Imaging tests were blinded and analyzed by dividing the readings of breast specialists and non-breast specialists among radiologists. We confirmed how much better the results would be if only the mammography was used and if both tests were used together. Results: The sensitivity, specificity, and accuracy of mammography alone, reviewed by non-breast specialists among radiologists, were 63.0%, 85.7%, and 71.3%, respectively. In dense breasts, the values were 59.2%, 84.8% and 69.0%, which were too low to be considered interpretable. The sensitivity, specificity and accuracy of the test was 93.9%, 75.2%, and 87.1% when using mammography and Mastocheck together. From these results, an improvement in sensitivity of about 30% and an improvement in accuracy of about 15% or more in concomitant use than mammography alone can be seen. Conclusion: Mastocheck can be widely used for screening breast cancer, especially in dense breasts, patients with low accuracy in mammography, and patients with mammography side effects. In addition, it has the advantage of increasing the diagnosis rate when used with mammography, the current screening method of choice.
Rates of COVID-19 Infection Among Healthcare Workers in Designated COVID-19 Wards and General Wards
Jung Jiwon,Kim Sun-Kyung,Lee Yumi,Park Soyeon,Lim Young-Ju,Kim Eun Ok,Kim Sung-Han 대한의학회 2022 Journal of Korean medical science Vol.37 No.43
Background: To evaluate the effects of isolating coronavirus disease 2019 (COVID-19) patients in general wards, we compared the rates of COVID-19 infection in nurses and nursing assistants working in COVID-19 designated wards and in general wards of our hospital from 1 October 2021 to 21 April 2022. Methods: This study was conducted in a 2,700-bed tertiary care hospital in Seoul, Korea. Designated wards comprised single, negative pressure rooms and a 100% outdoor air system. Results: During the study period, a total of 2,698 nurses and nursing assistants were employed at our hospital, of whom 310 (11%) were working in the designated wards, and the remaining 2,388 (89%) in the general wards, and among whom 1,158 (43%) were diagnosed with COVID-19. The healthcare workers (HCWs) in the designated wards were less frequently diagnosed with COVID-19 than those in the general wards (31% vs. 45%, P < 0.001). During the period before patients with COVID-19 were isolated in general wards, and during the period after these cases were isolated in general ward, HCWs in designated wards were less frequently infected with the virus than those in general wards (7% vs. 11%, P = 0.039; and 23% vs. 33%, P < 0.001, respectively). Conclusion: HCWs in designated wards have a lower rate of contracting COVID-19 than those in general wards. A lack of exposure to undiagnosed cases and their caregivers, greater care with social distancing outside the hospital, higher rates of 3-dose vaccinations, and the use of isolation rooms with negative pressure may be associated with this finding.