“지질공학”(1991-2024)의 연구동향 분석: 잠재 디리클레 할당 및 네트워크 분석 = Analysis of Research Trends in The Journal of Engineering Geology (1991-2024): Latent Dirichlet Allocation and Network Analysis

국문 초록 (Abstract)

국내 지질공학 분야를 대표하는 학술지인 “지질공학”은 1991년에 창간되어 현재까지 지속적으로 학술 활동 및 다양한 연구 논문을 발표하고있다. 지난 수십 년 동안 많은 연구자들이 특정 분야를 주제로 한 문헌 고찰 연구를 수행해 왔으나, 학술지 “지질공학”을 대상으로 수행한 문헌고찰 연구는 미비한 실정이다. 따라서, 본 연구에서는 텍스트 마이닝 기법 중 하나인 잠재 디리클레 할당(latent Dirichlet allocation, LDA) 모델을 적용하여 연구 주제 분류 및 연구동향을 분석하였으며, 네트워크 분석을 통해 시대별 주제 간의 연관성을 파악하였다. 분석 결과 총 7개의 연구 주제로 분류되었으며, 3가지 연구동향(Classic topic, Emerging topic, Stable topic)으로 나누어 해석하였다. Classic topic에는 “지구물리학”과 “구조지질학”으로 분석되었으며, 초기에는 주요 논의 주제였으나 시간이 지남에 따라 연구 비중이 감소하였다. Emerging topic은최근 연구가 활발한 “수리지질학”과 “지질재해”로 분석되었으며, ‘Stable topic’은 지속적으로 연구 비중이 유지된 “지반 구조물”, “지반 역학”, “환경지질학”으로 나타났다. 네트워크 분석 결과, 2008년 이전에는 “구조지질학”이 중심 주제였으나, 2008년 이후 “지반 구조물”분야로중심 주제가 이동하며 연구의 초점이 변화하였다. 본 연구는 학술지 “지질공학”의 연구 흐름과 발전 과정을 이해하고, 향후 연구 방향을 설정하는 데 중요한 자료를 제공하였음에 의의가 있다.

다국어 초록 (Multilingual Abstract)

The Journal of Engineering Geology (JEG), a leading academic journal in the field of engineering geology in South Korea, was first published in 1991 and has since been publishing academic papers and research findings. While several literature reviews have been undertaken on specific research areas in recent decades, comprehensive reviews focusing on JEG have been relatively limited. To address this gap, this study applied the latent Dirichlet allocation (LDA) model to analyze the main research topics and trends, and undertook network analysis to identify relationships between topics over different periods. Results for the LDA indicate seven key research topics categorized into three trends: Classic, Emerging and Stable topics. Classic topics include ‘Geophysics’ and ‘Structural geology’, which were major subjects in the early years, with their focus shifting to other areas over time. Emerging topics such as ‘Hydrogeology’ and ‘Geohazards’ have gained prominence in recent years. Stable topics including ‘Geotechnical structures’, ‘Geomechanics’, and ‘Environmental geo logy’ have maintained consistent research interest. Network analysis revealed that Structural geology was the central topic prior to 2008, while Geotechnical structures became the focal point of research after 2008, with a shift in research focus. The results of this study contribute to our understanding of research trends and the development of JEG, providing insights for the setting of future research directions.

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