키워드 빈도와 중심성 분석을 활용한 블록체인 기반 사물인터넷 연구 동향 : 미국·영국·한국을 중심으로

이택균 (사)디지털산업정보학회 2024 디지털산업정보학회논문지 Vol.20 No.1

This study aims to analyze research trends in blockchain-based Internet of Things focusing on the US, UK, and Korea. In Elsevier's Scopus, we collected 2,174 papers about blockchain-based Internet of Things published in from 2018 to 2023. Keyword frequency and centrality analysis were conducted on the abstracts of the collected papers. Through the obtained keyword frequencies, we tried to identify keywords with high frequency of occurrence and through centrality analysis, we tried to identify central research keywords for each country. As a result of the centrality analysis, research on blockchain, smart contracts, Internet of Things, security and personal information protection was conducted as the most central research in each country. The implication for Korea is that cybersecurity, authentication research appears to have been conducted with a lower centrality compared to the United States and the United Kingdom. Thus, it seems that intensive research related to cybersecurity and authentication is needed.

키워드 빈도 및 중심성 분석 기반의 머신러닝 헬스케어 연구 동향 : 미국·영국·한국을 중심으로

이택균 (사)디지털산업정보학회 2023 디지털산업정보학회논문지 Vol.19 No.3

In this study we analyze research trends on machine learning healthcare based on papers from the United States, the United Kingdom, and Korea. In Elsevier's Scopus, we collected 3425 papers related to machine learning healthcare published from 2018 to 2022. Keyword frequency and centrality analysis were conducted using the abstracts of the collected papers. We identified keywords with high frequency of appearance by calculating keyword frequency and found central research keywords through the centrality analysis by country. Through the analysis results, research related to machine learning, deep learning, healthcare, and the covid virus was conducted as the most central and highly mediating research in each country. As the implication, studies related to electronic health information-based treatment, natural language processing, and privacy in Korea have lower degree centrality and betweenness centrality than those of the United States and the United Kingdom. Thus, various convergence research applied with machine learning is needed for these fields.

중국 유희(遊戲)의 기원과 발전 양상: 중국 고대사회 유희를 중심으로

이택균,김태영,원유미 한국융합과학회 2019 한국융합과학회지 Vol.8 No.2

Pupose : This study is to examine the origin and development aspects of the play in the China and find the value of physical activities through the play of the ancient China. Methods : In order to examine at the origin and development aspects of the play in China, data related to Chinese play from universities, libraries and museums at home and abroad are collected and analyzed to contemplate the development aspects for each period. Conclusion : The mankind of pre-historic era developed play, such as stone throwing, archery, based on actions that were essential for survival. In particular, the stone ball, a relic of the time, shows the origin of ball play. As for the representative plays during the Pre-Chin and Warring States Period, there were , archery, Chariot riding and others. In particular, those plays were one of the military training in preparation for wars but it had the play function at normal times. Plays popular during the Han Dynasty were Cuju, gakjeo, yeokgigeojung, and especially, gakjeo and yeokgigeojung led the facilitation of gamubaekhee. Plays popular during the Sui Dynasty and Tang Dynasty were hunting, fishing, Polo, Cuju, ryeoguk, gakjeo, Chinese Chess, Water game, kite flying, tug-of-war, swing, bota and women's play. The characteristic of this era is the expansion of the class range of people participated in the play activities. Play of the ancient Chinese society made diverse development depending on time, environment and the class. 구목적 : 본 연구는 중국 유희의 기원과 발전 양상을 알아보기 위하여 중국의 古(고)문헌과 선행연구를 분석하여 고대사회 유희를 중심으로 고찰하여 동아시아 유희의 교류사적 유사성 발견과 신체 활동의 가치를 찾는데 목적을 가지고 있다. 연구방법 : 본 연구는 역사 연구로서 문헌 고찰을 통해 수행되었다. 중국 유희의 기원과 발전 양상을 살피기 위해 국내․외 대학과 도서관, 박물관 등에 소장되어 있는 중국 유희관련자료를 수집 분석하여 각 시기별로 발전 양상을 고찰하였다. 결론 : 선사시대의 인류는 생존하기 위해서 필수적이었던 뛰고, 던지고, 잡는 행위를 통해 돌 던지기, 활쏘기, 힘겨루기 등의 유희와 오락을 발전시켰으며, 특히 당시 유물로 출토된 석구(石球)를 통해 공 유희의 원형을 짐작할 수 있다. 선진(先秦)시기와 춘추전국시대의 대표적인 유희로는 활쏘기, 사냥, 추천(鞦韆), 축국(蹴鞠), 투호(投壺) 등을 들 수 있다. 특히 활쏘기와 수레몰기는 무사(武士)를 양성하고, 전쟁을 대비하는 군사훈련 방법 중 하나로 행해졌고 평소에 유희적 기능을 하였다. 한(漢)대에 대표적으로 성행했던 유희로는 축국(蹴鞠)과 각저(角抵), 역기거중(力技擧重)이 있는데 특히 각저와 역기거중은 가무백희(歌舞百戱)의 활성화에 앞장섰다. 수(隋)․당(唐)시대에서 성행하였던 유희는 사냥, 낚시, 격구(Polo), 축국, 려국(驪鞠, 당나귀를 타고 즐기는 Polo), 각저, 圍棋(바둑), 장기, 수희(水戲), 연날리기, 줄다리기, 추천(그네뛰기), 보타구(현재의 필드하키와 유사함) 그리고 여성유희가 성행하였다. 이 시대의 특징은 유희활동에 참여한 사람들의 계층범위가 확대되었다는 점이다. 중국 고대사회의 유희는 시대와 환경, 그리고 향유계층에 따라 다양하게 발달해 왔다. 중국 유희의 기원에는 뚜렷한 목적성이 존재했다. 고대사회에서 정복과 전쟁활동을 담당하였던 지배계급과 생산을 담당하였던 피지배계급은 그에 걸맞는 신체단련의 필요성이 있었고, 이러한 목적에서 신체를 단련하기 위한 훈련활동이 유희가 된 것이 기원의 한 축으로 볼 수 있다. 또 다른 축은 신에게 부족의 안녕과 풍년을 기원하는 제의(祭儀)와 관람을 위한 예술 활동들이 시간이 흐르면서 모두가 즐기는 유희로 발전한 것으로, 바로 이것이 연구자가 본 중국 유희의 기원과 발전 양상이라 하겠다.

키워드 빈도와 중심성 분석을 이용한 인공지능 보안 연구 동향 : 미국·영국·한국을 중심으로

이택균 (사)디지털산업정보학회 2023 디지털산업정보학회논문지 Vol.19 No.4

In this study, we tried to identify research trends on artificial intelligence security focusing on the United States, United Kingdom, and South Korea. In Elsevier's Scopus We collected 4,983 papers related to artificial intelligence security published from 2018 to 2022 and by using the abstracts of the collected papers, Keyword frequency and centrality analysis were conducted. By calculating keyword frequency, keywords with high frequency of appearance were identified and through the centrality analysis, central research keywords were identified by country. Through the analysis results, research related to artificial intelligence, machine learning, Internet of Things, and cybersecurity in each country was conducted as the most central and highly mediating research. The implication for Korea is that research related to cybersecurity, privacy, and anomaly detection has lower centralities compared to the United States and research related to big data has lower centralities compared to United Kingdom. Therefore, various researches that intensively apply artificial intelligence technology to these fields are needed.

두 개의 동심 원형 개재물을 가지는 삼종 재료에서의 특이성 ( A Singularity in a Trimaterial with Two Concentric Circular Inclusions )

이택균,최승태,이경우,엄윤용 대한기계학회 2000 대한기계학회 춘추학술대회 Vol.- No.-

중국 제기차기(踢毽子)에 관한 연구

이택균,박태근 한국체육과학회 2020 한국체육과학회지 Vol.29 No.3

The purpose of this study is to examine the characteristics and meaning of shuttlecock kicking in China that has reached success in both sports for all and professional sports unlike Korea. The results are as follows. First, Shuttlecock kicking in China originated from Chinese ancient society's traditional ball play(Chukkuk) and it had relied on the advancement in art of traditional ball play. In addition, Shuttlecock kicking was born when convenient equipment was made rather than how to make a ball. During the Han Dynasty, the technology and art of shuttlecock kicking of the people reached the threshold, and in the Song Dynasty, as shuttlecock kicking became a performance-oriented art from that emphasized individual craftsmanship, equipments had to be standardized and specialized shops started to appear. In the Yuan Dynasty, people performed shuttlecock kicking in the form of a stunt show with music in front of the viewers to make the living. Second, In the Ming and Qing Dynasty, combination of regulations on traditional ball kicking and introduction of the modern British football provided an opportunity for the shuttlecock kicking to thrive more and announced the golden era of shuttlecock kicking. Since the modern age, an interest towards it grew and led to an official shuttlecock kicking competition in 1928, and a national athletic game in 1933. Third, After the establishment of the People's Republic of China, the status of Chinese shuttlecock kicking was further enhanced by the active support of the government. During 1980’s to 90’s period, shuttlecock kicking was already been officially adopted in many competition in China, and it rapidly spread internationally.

키워드 빈도와 중심성 분석을 이용한 사물인터넷 및 스마트 시티 연구 동향: 미국·일본·한국을 중심으로

이택균 (사)디지털산업정보학회 2022 디지털산업정보학회논문지 Vol.18 No.3

This study aims to examine research trends on the Internet of Things and smart city based on papers from the United States, Japan, and Korea. We collected 7113 papers related to the Internet of Things and smart city published from 2016 to 2021 in Elsevier's Scopus. Keyword frequency and centrality analysis were performed based on the abstracts of the collected papers. We found keywords with high frequency of appearance by calculating keyword frequency and identified central research keywords through the centrality analysis by country. As a result of the analysis, research on security, machine learning, and edge computing related to the Internet of Things and smart city were the most central and highly mediating research conducted in each country. As an implication, studies related to deep learning, cybersecurity, and edge computing in Korea have lower degree centrality and betweenness centrality compared to the United States and Japan. To solve the problem it is necessary to combine these studies with various fields. The future research direction is to analyze research trends on the Internet of Things and smart city in various regions such as Europe and China.

키워드 빈도, 중심성 분석 및 사회 네트워크 분석을 이용한 엣지 컴퓨팅 연구 동향:미국영국한국을 중심으로

이택균 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.3

본 연구는 미국, 영국, 한국을 중심으로 엣지 컴퓨팅에 관한 연구 동향을 분석하고자 하였다. Elsevier의 Scopus에서 2018년부터 2022년까지 발표된 논문을 대상으로 하여 5,645편의 논문을 수집하였으며 수집된 논문의 초록을 대상으로 하여 키워드 빈도 및 중심성 분석을 진행하였다. 키워드 빈도를 구하여 출현 빈도가 높은 키워드를 파악하고자 하였으며 중심성 분석에 의해서 중심적인 연구 키워드를 파악하고자 하였다. 중심성 분석 결과를 통해서 각 국가에서 엣지 컴퓨팅과 사물인터넷 관련 연구가 가장 중심적 연구로 파악된다. 한국과 관련된 시사점은 인공지능, 보안, 자원 관리 및 빅데이터와 관련된 집중적인 연구 진행이 필요해 보인다. 향후에는 다양한 국가들이 진행한 엣지 컴퓨팅 기반 응용 분야의 연구에 대한 동향 분석을 하고자 한다.

무선 센서 네트워크에서 그리드 기반의 효과적인 모바일 싱크 라우팅 프로토콜

이택균(Taekkyeun Lee) 한국컴퓨터정보학회 2018 韓國컴퓨터情報學會論文誌 Vol.23 No.2

In this paper, we propose a grid-based efficient routing protocol for a mobile sink in wireless sensor networks. In the proposed protocol, the network is partitioned into grids and each grid has a grid head. For the efficient routing to a mobile sink, the proposed protocol uses a mobile sink representative node to send the data to a mobile sink and grid heads are used as a mobile sink representative node. Furthermore, the proposed protocol uses nodes in the boundary of the center grid as position storage nodes. The position storage nodes store the position of a mobile sink representative node and provide source nodes with it for data delivery. With these features, the proposed protocol can reduce a lot of overhead to update the position information and improve the delay of data delivery to a mobile sink. The proposed protocol performs better than other protocols in terms of the delay and the energy consumption per node in the performance evaluation.

키워드 빈도, 중심성 분석 및 사회 네트워크 분석을 이용한 엣지 컴퓨팅 연구 동향:미국·영국·한국을 중심으로

이택균(Taekkyeun Lee) 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.3

본 연구는 미국, 영국, 한국을 중심으로 엣지 컴퓨팅에 관한 연구 동향을 분석하고자 하였다. Elsevier의 Scopus에서 2018년부터 2022년까지 발표된 논문을 대상으로 하여 5,645편의 논문을 수집하였으며 수집된 논문의 초록을 대상으로 하여 키워드 빈도 및 중심성 분석을 진행하였다. 키워드 빈도를 구하여 출현 빈도가 높은 키워드를 파악하고자 하였으며 중심성 분석에 의해서 중심적인 연구 키워드를 파악하고자 하였다. 중심성 분석 결과를 통해서 각 국가에서 엣지 컴퓨팅과 사물인터넷 관련 연구가 가장 중심적 연구로 파악된다. 한국과 관련된 시사점은 인공지능, 보안, 자원 관리 및 빅데이터와 관련된 집중적인 연구 진행이 필요해 보인다. 향후에는 다양한 국가들이 진행한 엣지 컴퓨팅 기반 응용 분야의 연구에 대한 동향 분석을 하고자 한다. This study aimed to analyze research trends on edge computing, focusing on the United States, United Kingdom, and South Korea. A total of 5,645 papers were collected from papers published from 2018 to 2022 in Elseviers Scopus and keyword frequency and centrality analysis was conducted for abstract of the collected papers. The frequency of keywords was obtained to identify keywords with high frequency and centrality analysis was performed to identify the central research keywords. Through the centrality analysis, research related to edge computing research and IoT is identified as the most central research in each country. Implications related to Korea seem to require intensive research related to AI, security, resource management and big data. In the future, we plan to analyze trends in studies on edge computing-based application fields conducted in various countries.