Autoimmune Hemolytic Anemia Combined with Sepsis After Abdominal Trauma Surgery

문길성,최영운,심홍진,장지영 대한외상중환자외과학회 2021 Journal of Acute Care Surgery Vol.11 No.2

Intra-abdominal infection is a common, serious complication in patients undergoing emergency abdominal surgery following blunt abdominal trauma. Infectious conditions increase the incidence of autoimmune hemolytic anemia (AIHA), but reports of AIHA occurring after abdominal trauma surgery are rare. Therefore, we report a case of sepsis due to fasciitis and AIHA after abdominal trauma surgery which was successfully managed following the appropriate treatment of both conditions.

Development of a Dynamic Geometry Environment to Collect Learning History Data

문길성,한범수,한경용,안정용 한국데이터정보과학회 2007 한국데이터정보과학회지 Vol.18 No.2

As teachings that use the ICT are more popular, many studies on the dynamic geometry environment(DGE) are under way. An important factor emphasized in the studies is to practical use learning activities of learners. In this study, we first define the learning history data in DGE. Second, we develop a prototype of the DGE that is able to collect and analyze the learning history data automatically. The environment enables not only to grasp leaning history but also to create and manage new learning objects.

질의응답 커뮤니티에서 문서 간 이독성 비교

문길성 한국콘텐츠학회 2020 한국콘텐츠학회논문지 Vol.20 No.10

커뮤니티 질의응답 서비스는 다양한 목적으로 활용되고 있다. 질의응답 문서에서 정보의 품질은 질문의 명확성과 답변 내용의 적절성으로 결정되며 문서의 읽기 쉬운 정도를 나타내는 이독성(readability)은 문서가 가지고 있는 정보의 품질을 평가하기 위한 주요 요소이다. 본 연구의 목적은 국내의 CQA 사이트에서 제공되는 문서의 품질을 측정하는 것이다. 이를 위하여 네이버 지식iN의 ‘국민 신문고’ 커뮤니티의 문서에서 사용된 어휘 수준별 사용 빈도를 비교하고, 작성 기관별 문서의 이독성 지수를 측정하였다. 이독성 지수의 측정은 어휘 수준과 문장 길이를 바탕으로 계산되는 Dale-Chall 공식을 사용하였다. 분석 결과, 답변에서 사용된 어휘는 질문에서 사용된 어휘보다 더 어려운 수준이고 문장 길이도 더 길어서 이독성이 더 낮은 것으로 나타났다. 또한, 질의응답간 이독성의 차이는 작성 기관별로도 차이가 있음을 파악할 수 있었다. 본 연구의 결과는 상담업무에 반영할 수 있는 유용한 정보를 도출하여 온라인상의 민원상담 개선에 활용할 수 있으며, 이독성 지수에 기반하여 문서 수준의 정량적 분석을 시도함으로써 텍스트 마이닝의 주제를 확장할 수 있을 것으로 기대한다. Community question and answering service is one of the main sources of information and knowledge in the Web. The quality of information in question and answer documents is determined by the clarity of the question and the relevance of the answers, and the readability of a document is a key factor for evaluating the quality. This study is to measure the quality of documents used in community question and answering service. For this purpose, we compare the frequency of occurrence by vocabulary level used in community documents and measure the readability index of documents by institution of author. To measure the readability index, we used the Dale-Chall formula which is calculated by vocabulary level and sentence length. The results show that the vocabulary used in the answers is more difficult than in the questions and the sentence length is longer. The gap in readability between questions and answers is also found by writing institution. The results of this study can be used as basic data for improving online counseling services.

단문의 주제 분석을 위한 LDA와 BTM 토픽모형 평가

문길성(Gil-Seong Mun) 한국자료분석학회 2021 Journal of the Korean Data Analysis Society Vol.23 No.3

토픽 모형은 대량의 문서 집합에서 잠재된 주제를 발견하기 위한 비지도학습의 하나이며, 가장 많이 이용되고 있는 모형은 LDA(Latent Dirichlet Allocation)인 것으로 알려져 있다. LDA는 문서 수준에서 단어의 동시 출현 패턴에 기반을 둔 모형이어서 길이가 긴 문서에서는 효과적으로 이용될 수 있으나, 트윗이나 인스턴트 메시지와 같은 길이가 짧은 문서에는 단어의 동시 출현이 희박하고 자주 사용되지 않는 단어의 출현으로 인하여 양질의 주제 추론이 어렵다는 한계가 있다. 이 문제를 개선하기 위한 하나의 대안으로 BTM(Bi-term Topic Model)이 있다. BTM은 bi-term을 사용하여 단어의 동시 발생을 모델링하고, 주제를 찾기 위하여 이러한 단어의 동시 발생 패턴을 bi-term의 말뭉치에서 집계한다. 본 연구의 목적은 LDA와 BTM의 성능을 비교하고 한국어 기반의 텍스트 데이터에서 BTM의 활용 가능성을 검토하는 데 있다. 이를 위하여 토픽의 질을 양적으로 측정할 수 있는 측도들을 검토하고 실제 자료에 적용하여 두 모형을 평가하였다. 평가결과, 주제 일관성과 문서 분류의 정확성 모두 BTM이 LDA 보다 우수한 것으로 나타났다. 이러한 결과는 단문에서 양질의 토픽을 추출하는 방법으로 BTM의 활용 가능성이 있음을 시사한다. Topic modeling is an unsupervised technique for discovering the underlying topics that occur in a collection of documents, and one popular model is known as LDA (Latent Dirichlet Allocation). It can be used effectively on a variety of long document types because the model implicitly captures the document-level word co-occurrence patterns to reveal topics. The model, however, may have difficulty extracting topics due to the severe data sparsity in short texts such as tweets and instant messages. An alternative to improve this problem is to BTM (Bi-term Topic Model). BTM models the word co-occurrence by using the explicit bi-term, and aggregate these word co-occurrence patterns in the corpus for topic discovering. This study is to compare the performance of LDA and BTM and explore the availability of BTM in Korean-based text data. We reviewed the measures to quantitatively represent the quality of the topics, and evaluated the two models based on real data. As a result, BTM outperformed LDA on short texts, using topic coherence and document classification accuracy as performance measures. The results suggest the availability of BTM to extract topics from short texts.

Exploring the features of suicide mortality in Korea: a descriptive study

안정용,문길성 통계청 2020 통계연구 Vol.25 No.4

Suicide has become a serious and growing public health problem in Korea. This study is to explore the features of the Korean suicide mortality. For this purpose, we explore two types of data, micro data set and the summary data set for deaths and mortality rates. First, we look at the trends of the suicide rate and the factors of suicide from a variety of perspectives. We then explore the features of the suicide based on the examination, and suggest policy implications focusing on three viewpoints to reduce the suicide rate in Korea. Data exploration results show that the suicide rates have continually increased over the last 25 years since the late 1980s in Korea, and the rates for the age group over 60 were considerably higher than the rates for other age groups since the 2000s. Especially, the rates were overwhelmingly high in the age group of 70 and over 80 in both gender. There is also a seasonality in the suicides. The suicide deaths were high during the spring season, low during the winter season, and high in the days after two main holidays. In addition, the suicides is closely related to the problems of mental/psychiatric and economics.

A Note on the Use of Peer Assessment to Improve Pupil's Performance

이경구,문길성,안정용 한국데이터정보과학회 2008 한국데이터정보과학회지 Vol.19 No.2

Peer assessment is the process of assessment of students by other students and one form of innovative assessment. It actively involves students in the assessment process and is generally agreed that such involvement enhances the quality and effectiveness of the learning process, since assessing something and benchmarking process is a powerful aid to mastering it themselves. It is more effective on the hard courses for them to understand. In this article we present a peer assessment technique which was applied to students enrolled in a mathematical statistics course and a historical course. In order to measure the effectiveness of the technique, students had to evaluate their colleagues based on predefined criteria and a comparison is presented between the instructor assessments and the peer assessment.

Experiences of the Emergency Department at the Pyeongchang Polyclinic During the 2018 PyeongChang Winter Olympic Games

김광민,장지영,문길성,심홍진,정필영,김성엽,최영운,배금석 연세대학교의과대학 2019 Yonsei medical journal Vol.60 No.5

Purpose: The 2018 PyeongChang Winter Olympic Games involved 2925 elite athletes, and providing proper health care servicesfor these elite athletes was a critical priority. We established an emergency department (ED) in the Pyeongchang Mountain Polyclinicduring the Olympics, which served staff and athletes from many countries. This experience, as well as a description of illnessesand injuries encountered during the games, may provide useful information for planning medical care at similar events in the future. Materials and Methods: The polyclinic ED operated from January 25 to February 27, 2018. All cases were enrolled in this study,and their data were analyzed by date and category. In addition, the number of injuries by body part, number of illnesses by organsystem, and illness symptoms and causes were analyzed. Results: In total, 288 patients were encountered in the ED. These included 113 injuries and 175 illnesses. We consulted with 153staff members and 75 athletes, and reported that the fingers were the most commonly injured body part, followed by the knee. Therespiratory system was the most commonly involved organ system, and the most common cause of illness was infection. Thirtyeightinfluenza tests were performed, among which the results of seven were positive. We performed 17 norovirus tests, amongwhich the results of four were positive. Conclusion: Our analysis of our ED experience will aid arrangements for medical services in future Winter Games. Additionally,given our new experience, we will now be able to provide better medical services for future winter sports events.

영어영문학 관련 학회장 인사말 내용분석

최경호(Kyoungho Choi),문길성(Gil Seong Mun) 한국콘텐츠학회 2013 한국콘텐츠학회논문지 Vol.13 No.3

자신의 생각을 표현한 텍스트에 표현된 단어들은 메시지에서 강조하는 핵심 이미지, 주요 이슈, 상징적 아이콘으로 볼 수 있다. 학술단체의 대표인 학회장에게 적용시켜 보면, 학회장이 인사말에서 사용하는 단어의 빈도와 연결구조는 학회장 및 임원의 가치지향과 이념을 알 수 있다. 본 연구에서는 언어네트워크분석을 통하여 국내 영어영문 관련 학회 홈페이지에 소개된 학회장의 인사말을 내용분석해서 각 학회별 특징과 그 구조적 모습에 대해 살펴보았다. 그 결과 많은 빈도수를 보인 단어에서 유사점과 함께 차이점(특징)이 있음을 확인하였다. 나아가 본 연구의 결과는 영어영문 관련 학회의 비교연구를 위한 기초자료로 활용될 수 있을 것으로 사료된다. The words a speaker uses can be regarded as the core, the main issue and a symbolic icon of what he says. Applying this to presidents’ addresses of each English literary society in Korea shows that frequency in use and the linkage of words they use in their addresses are value and ideas executive officers pursue. The purpose of this study is to analyze the contents of presidents’ addresses introduced in home page of each English literary society in Korea and investigate features and constitution of them each, focusing on analysis of a language network. The results of this study show the features of resemblances and differences of commonly-used words. In addition, these results appear to suggest that they can be also applied to a comparative study between the English literary societies in Korea.

팀 간 점수교전 방식을 활용한 평가시스템 설계 및 구현

한범수(Beom-Soo Han),문길성(Gil-Sung Moon) 한국엔터테인먼트산업학회 2007 한국엔터테인먼트산업학회논문지 Vol.1 No.-