e-스포츠에서 NFT 활성화 방안

이충근(Chung Gun Lee),이수현(Su-Hyun Lee) 한국컴퓨터정보학회 2023 韓國컴퓨터情報學會論文誌 Vol.28 No.2

Business Analytics를 이용한 기업 지식관리시스템 구축 사례 연구

이충근 ( Chung Keun Lee ),이수용 ( Soo Yong Lee ),이군희 ( Gun Hee Lee ) 한국지식경영학회 2013 지식경영연구 Vol.14 No.5

Business Analytics를 이용한 기업 지식관리시스템 구축 사례 연구

이충근 ( Chung Keun Lee ),이수용 ( Soo Yong Lee ),이군희 ( Gun Hee Lee ) 한국지식경영학회 2013 지식경영연구 Vol.14 No.4

Although business Intelligence system is introduced to many companies over the past decade, The result of business benefits from BI investment are not so significant than expected. But still successful BI system can provide the ability to analyse business information in order to support and improve management decision making across a broad range of business activities. In recently, Business Analytics System(BA) is emerging as advanced alternative of outdated and inefficient BI System. This study is focus on constructing procedure of BA system in KB card company, which is major credit card company in South Korea. In practice there were just few works that mentioned well-designed environment of KMS system, and other contribution of this study is to make a platform which invoke revelation of collective intelligence in data analytic professional users group.

L형 옹벽의 안전율 향상기법에 관한 연구

윤여원(Yoon Yeo Won),이충근(Lee Chung gun),이승훈(Lee Sung Hoon) 대한토목학회 2004 대한토목학회 학술대회 Vol.2004 No.10

드문모심기 적정 파종량 및 육묘일수 분석

황운하,정재혁,이현석,양서영,이충근,Hwang, Woon-Ha,Jeong, Jae-Hyeok,Lee, Hyen-Seok,Yang, Seo-Yeong,Lee, Chung-gun 한국작물학회 2021 Korean journal of crop science Vol.66 No.2

최근 벼 이앙 시 필요한 육묘상자 개수를 크게 절감할 수 있는 새로운 생력재배기술로 주목받고 있는 드문모심기의 안전 육묘기술을 개발하기 위해 육묘상자당 파종량 및 육묘일수에 등 육묘환경에 따른 모소질 변화를 분석한 결과는 다음과 같다. 1. 육묘일수 10일 시 파종량에 따라 엽수, 줄기두께가 변하였으며, 육묘일수 20일에는 초장, 엽수, 줄기두께가 유의적인 차이를 보였다. 2. 상자 당 파종량 증가에 따라 육묘일수에 따른 초장신장, 엽령증가정도 및 줄기두께 증가정도가 감소하는 경향이었다. 3. 상자 당 파종량 증가에 따라 줄기 건물중 및 뿌리 건물증이 감소하였으며 그 감소폭은 육묘일수 10일에 비해 20일에 크게 증가하였다. 4. 어린모의 줄기 건물중은 뿌리건물중, 초장 및 줄기두께와 높은 정의 상관관계를 보였으며, 상자 당 파종량 증가 시 모충실도는 낮아지며 육묘일수당 모충실도 감소량도 증가하는 경향이었다. 5. 드문모심기 시 육묘상자 절감의 효율증대를 위해 최소 묘취량을 설정하여 이앙 시 주당 3~5본을 이앙하기 위한 적정 파종개수는 11,000로 현미천리중이 22 g인 종자의 경우 약 280~300 g으로 판단되며 이 때 적정 육묘일수는 모충실도감소가 적은 13~16일로 판단된다. In order to develop a safe seeding technology for low-density transplantation, we analyzed the changes in seeding growth according to different seeding rates and seeding days. We detected changes in leaf number and shoot diameter on the 10th seeding day, and in plant height on the 20th seeding day according to seeding rate. The increase in shoot and leaf number, and shoot diameter per seeding day decreased with anincrease in seeding rate. On seeding day 20, the reductions in shoot and root dry weights according to seeding rate was lower compared with those recorded at seeding day 10. Shoot dry weight was significantly related to root dry weight, plant height, and shoot diameter. With an increase in seeding rate, seeding health decreased and there was an increase in the rate of seeding health per seeding day decreased. For low-density transplantation, the optimal number of seeds required for transplanting 3-5 plants per hill is 11,000, which is estimated to be approximately 280-300 g of seeds for 22 g brown rice. Furthermore, the appropriate number of seeding days is estimated to be 13 to 16 days, which corresponds to a small reduction in seeding health.

볍씨 최아 및 최아 손상정도에 따른 초기생육변화 분석

최명구,정재혁,이현석,양서영,이충근,황운하,Choi, Myoung-Goo,Jeong, Jae-Hyeok,Lee, Hyen-Seok,Yang, Seo-Yeong,Lee, Chung-gun,Hwang, Woon-Ha 한국작물학회 2021 Korean journal of crop science Vol.66 No.3

볍씨 종자의 최아정도 및 최아 손상정도에 따른 출현율 및 초기생육변화를 분석한 결과는 다음과 같다. 1. 볍씨 최아 길이가 길수록 출현율은 다소 감소하였으며 생육온도가 18℃ 이상으로 높을수록 차이가 큰 것으로 나타났다. 2. 최아 길이가 길수록 초장신장 속도가 감소하였으며 생육온도가 21℃ 이상으로 높을 시 최아길이 3 mm에서 초장이 크게 감소하였다. 3. 최아길이에 따른 엽수변화는 없었으나 줄기 두께 및 줄기 건물중, 뿌리 건물중은 최아길이가 길수록 유의하게 감소하였다. 4. 최아 손상정도가 증가할수록 출현율은 유의하게 감소하였으며 생육온도가 높을수록 감소폭은 증가하으며 엽수변화는 없었으나 줄기 두께 및 줄기 건물중, 뿌리 건물중은 최아 손상도가 길수록 유의하게 감소하였다. 최아 길이 및 종자 손상정도별 뿌리 건물중과 줄기 건물 중 변화는 유의한 정의 상관관계를 보였다. We checked the emergence rate and early growth characteristics of young rice plants according to the germination length and seed damage ratio in direct seeding. The emergence rate was reduced according to the longer germination length and higher seed damage ratio. The emergence rate was further reduced under high-temperature conditions. The leaf number did not show a significant difference according to germination length and seed damage ratio. However, shoot and root dry weights were reduced according to the germination length and seed damage ratio. The root dry weight was highly correlated with the shoot dry weight. Based on these results, we concluded that a longer germination length and seed damage could induce the loss of nutrients and affect poor root growth, consequently inducing poor emergence and growth in the early growth stage of rice seeds. Therefore, in rice direct seeding, seed conditions of less than 1 mm of germination length should be checked for a sufficiently high standing rate and adequate growth characteristics after seeding.

RNA-Sequencing을 이용한 벼 품종간 수발아 차이 분석

최명구,이현석,황운하,양서영,이윤호,이충근,윤성중,정재혁,Choi, Myoung-Goo,Lee, Hyen-Seok,Hwang, Woon-Ha,Yang, Seo-Yeong,Lee, Yun-Ho,Lee, Chung-gun,Yun, Song Joong,Jeong, Jae-Hyeok 한국작물학회 2020 한국작물학회지 Vol.65 No.4

Seed dormancy is an adaptive trait in which seeds do not germinate under unfavorable environmental conditions. Low dormancy seeds are easily germinated under optimal environmental conditions, and these characteristics greatly reduce the yield and quality of crops. In the present study, we compared the pre-harvest sprouting (PHS) rate of two cultivars, Joun and Jopyeong, using the Winkler scale after heading day and temperature of the test. The PHS rate increased as the Winkler scale after heading day increased from 700℃ to 1100℃ and the temperature of the test increased. In all conditions, the PHS rate of Jopyeong was higher than that of Joun. RNA-sequencing was used to analyze the cause of the high PHS rate. We analyzed the biological metabolic processes related to the abscisic acid (ABA) metabolite pathway using the KEGG mapper with selected differentially expressed genes in PHS seeds. We found that the expression of ABA biosynthesis genes (OsNCEDs) was down-regulated and that ABA catabolic genes (OsCYP707As) was up-regulated in PHS seeds. However, the quantitative real-time PCR results showed that Joun had a higher expression of OsNCEDs than that of Jopyeong, but OsCYP707As did not yield a significant result. Joun displayed higher ABA content than that of Jopyeong not only during ripeness time but also during PHS treatment. Taken together, we provided evidence that the ABA content remaining in the seed is important to the PHS rate, which is determined by the expression level of the ABA biosynthesis gene OsNCEDs.

건강증진 프로그램의 평가 프레임워크 사용: 체계적 문헌고찰 연구의 포괄적 고찰

권준혜(Junhye Kwon),김태응(TaeEung Kim),이충근(Chung Gun Lee) 서울대학교 보건환경연구소 2023 보건학논집 Vol.60 No.2

Objectives: The purpose of this study is to synthesize systematic reviews and meta analyses of the use and reporting of evaluation frameworks for health promotion programs. Methods: A systematic search was performed using three d atabases (PubMed, CINAHL, Scopus ). Three authors independently reviewed the titles and abstracts of the identified stud ies, and relevant data were extracted according to the inclusion criteria. The research findings were synthesized descriptively. Results: Ten studies were included. Seven of these studies reviewed the application of a specific framework for various health promotion programs, while the remaining three analyzed the use of different evaluation frameworks for specific health promotion programs. The RE AIM framework was most frequently applied in intervention studies, including those related to physical activity , and was predominantly used predominantly. Conclusion: Given the continued publication of studies on the issues and directions of applying the RE-AIM framework according to cumulative usage, future research should conduct a systematic evaluation based on such studies.

Analysis of Exercise Intensity Based on Cardiorespiratory Response in a Virtual Reality-Based Exercise Program for Firefighter Physical Fitness Enhancement

제민건(Min-Geon Je),서동일(Dong-Il Seo),Jung-Jun Park,강현주(Hyun-Joo Kang),송욱(Wook Song),이충근(Chung-Gun Lee),안연순(Yeon-Soon Ahn),김지빈(Ji-Been Kim),이한준(Han-Joon Lee) 대한운동학회 2024 아시아 운동학 학술지 Vol.26 No.1

OBJECTIVES Current regulations for Korean firefighters primarily emphasize exercise during working hours without specifying particular exercise methods. This study aims to evaluate the exercise intensity of the stepwise Korean Firefighter Fitness Program (KFFP) using Kinect-based mixed reality device (Virtual mate, VM), considering the demanding 24-hour shift work and high physical strength requirements. The objective is to assess its potential as one of the exercise methods and provide valuable insights. METHODS CResearchers recruited 30 participants to evaluate the exercise intensity based on the cardiopulmonary responses induced by the Stepwise Korean Firefighter Fitness Program (KFFP) using Virtual Mate (VM). Initially, the participants' resting heart rate, maximum heart rate (HRmax), and maximum oxygen consumption (VO2max) were measured. Subsequently, researchers monitored the participants' cardiopulmonary responses by employing portable gas analyzers and wireless heart rate monitors while implementing the Stepwise KFFP with VM. Exercise intensity related to cardiopulmonary responses was recorded using both absolute parameters (VO2, HR) and relative parameters (%VO2max, %HRR, %HR). Researchers utilized repeated measures analysis of variance for statistical analysis. RESULTS The analysis of the stepwise KFFP using VM showed significant increases all parameters as the program advanced(p<.001). VO2 increased from around 19.4 ml/kg/min in Step 1 to approximately 22.8 ml/ kg/min in Step 3. Similarly, %HRR rose from roughly 40.6% in Step 1 to about 53.9% in Step 3. CONCLUSIONS Upon evaluating the stepwise KFFP based on the exercise intensity levels recommended by ACSM, it is confirmed that the stepwise KFFP using VM comprises both moderate-intensity and highintensity exercises. This approach is deemed effective and can serve as a fitness management method for firefighters working in 24-hour shift patterns that demand high fitness levels.

MODIS NDVI와 기상자료를 이용한 우리나라 벼 수량 추정

홍석영 ( Suk Young Hong ),허지나 ( Ji Na Hui ),안중배 ( Joong Bae Ahn ),이지민 ( Jee Min Lee ),민병걸 ( Byoung Keol Min ),이충근 ( Chung Kuen Lee ),김이현 ( Yi Hyun Kim ),이경도 ( Kyung Do Lee ),김선화 ( Sun Hwa Kim ),김건엽 ( Gun 대한원격탐사학회 2012 大韓遠隔探査學會誌 Vol.28 No.5

본 연구에서는 농경지의 면적 산정과 다양한 작물의 생산량 추정을 위해 많이 활용되고 있는 MODIS 영상과 기상자료를 이용하여 우리나라의 벼 수량을 추정해보고자 하였다. Terra와 Aqua 위성으로 부터 얻어진 시계열 MODIS NDVI 자료를 구축하고 수량과의 상관성이 높은 시기를 선택하여 기상자료와 함께 다중회귀 모형 기반으로 우리나라 벼 수량을 추정하였다. 2002년부터 2010년까지 MODIS 위성 식생지수 NDVI와 기상자료(일조시간 및 일사량)를 이용하여 우리나라 벼 수량 추정을 위한 다중 회귀모형을 작성하였다. MODIS NDVI와 관측소 기상자료 1을 이용한 모형으로 2011년 쌀 수량 추정한 결과 494.6 kg 10a-1로 통계청이 발표한 최종 수량과는 1.1 kg 10a-1 차이가 나는 것으로 나타났다. MODIS NDVI와 관측소 기상자료 2를 이용한 모형으로 2011년 쌀 수량 추정한 결과 509.7 kg 10a-1로 통계청이 발표한 최종 수량과 14.1 kg 10a-1 차이가 나는 것으로 나타났다. 2002년부터 2011년까지의 우리나라 쌀 수량 분포도를 작성하였다. The objective of this study was to estimate rice yield in Korea using satellite and meteorological data such as sunshine hours or solar radiation, and rainfall. Terra and Aqua MODIS (The MOderate Resolution Imaging Spectroradiometer) products; MOD13 and MYD13 for NDVI and EVI, MOD15 and MYD15 for LAI, respectively from a NASA web site were used. Relations of NDVI, EVI, and LAI obtained in July and August from 2000 to 2011 with rice yield were investigated to find informative days for rice yield estimation. Weather data of rainfall and sunshine hours (climate data 1) or solar radiation (climate data 2) were selected to correlate rice yield. Aqua NDVI at DOY 233 was chosen to represent maximum vegetative growth of rice canopy. Sunshine hours and solar radiation during rice ripening stage were selected to represent climate condition, Multiple regression based on MODIS NDVI and sunshine hours or solar radiation were conducted to estimate rice yields in Korea. The results showed rice yield of 494.6 kg 10a-1 and 509.7 kg 10a-1 in 2011, respectively and the difference from statistics were 1.1 kg 10a-1 and 14.1 kg 10a-1, respectively. Rice yield distributions from 2002 to 2011 were presented to show spatial variability in the country.