강원지역 시험유역에 대한 RUSLE 인자특성 분석 (II) - RUSLE 모형의 시험유역 적용을 중심으로 -

이종설,정재학,Lee,Jong-Seol,Chung,Jae-Hak 한국방재학회 2009 한국방재학회논문집 Vol.9 No.6

본 연구에서는 토양침식성 인자, 사면경사길이 인자, 피복관리 인자 등 RUSLE 모형의 각종 인자들의 산정방법의 특성을 검토하고 산정방법간의 오차를 분석하고자 하였다. 또한, 42개의 강우사상에 대해 RUSLE모형을 강원 토사유출 시험유역에 적용하여 토사유출량을 산정하고 그 결과를 관측 토사유출량과 비교함으로써 모형의 적용성을 검토하였다. RUSLE모형의 각종 인자들에 대한 분석결과 피복관리 인자가 가장 민감한 것으로 나타났으며, 산지유역에 RUSLE를 적용하는 경우 식생의 영향을 반드시 고려할 필요가 있다. 또한 국립농업과학원 토양정보시스템의 토양통 자료를 이용하는 경우 현장토양 특성을 반영하지 못해 큰 오차가 발생하는 것으로 나타났다. 강우에너지 산정방법에 따라서는 최대 22.7%의 오차가 발생하는 것으로 나타났으며, 향후 보다 많은 자료를 이용하여 각 인자들을 검증할 필요가 있다. In this study, the characteristics of estimating methodology for RUSLE factors such as soil erodibility factor, slope length-steepness factor, and cover management factor were reviewed and then the relative error according to each methodology was analyzed. RUSLE was applied to experimental watershed for 42 storm events and their results were compared with measured sediment yield to examine the applicability of RUSLE. As a result, this paper found that it should be necessary to consider vegetation effect for forest application of RUSLE as cover management was the most sensitive factor. Also, soil erodbility factor was calculated from data of soil series by National Academy of Agricultural Science caused sediment yield to be overestimated because there were big differences between the soil series and on-site soil texture. The 22.7% of maximum relative error was shown according to selecting the rain energy equation. In addition, it will be necessary to verify the RUSLE factors with more data in order to improve their accuracy.

교량 및 암거의 수리영향 분석

이종설,정재학,김수전,이호열,Lee. Jong-Seol,Chung. Jae-Hak,Kim. Soo-Jun,Lee. Ho-Yul 한국방재학회 2007 한국방재학회 학술발표대회논문집 Vol.2007 No.1

The purpose of this research is to analyze sensitivities on hydraulic characteristic factors of bridge and culvert causing flood water level rising. With HEC-RAS and RMA2 models, analysis of backwater due to bridge and culvert in an ideal stream was carried out. The results of hydraulic modeling and sensitivity analysis indicated that the opening ratio and the Froude number were the most sensitive factors and other factors were not quite sensitive to flood water level rising.

RUSLE 모형의 산지유역 적용을 위한 지표관리 인자 산정식 제안

이종설,원진영,Lee. Jong Seol,Won. Jin Young 한국방재학회 2012 한국방재학회논문집 Vol.12 No.2

현재 국내에서는 토양침식 예측을 위하여 주로 RUSLE 모형을 사용하고 있으나, RUSLE 매개변수들은 미국 농경지역의 관측자료를 이용하여 제안된 것으로서, 국내 산지유역에 적용하기 위해서는 검정이 필요하다. 특히 지표관리 인자는 공간적, 시간적 변동성이 매우 큰 인자로서, 국외에서는 식생피복을 나타내는 지표인 NDVI와 지표관리 인자간의 상관관계에 대한 연구가 활발히 이루어지고 있으나, 국내에서는 이에 대한 연구가 미진하다. 따라서 본 연구에서는 식생피복율, 토양침식량 등의 관측자료를 활용하여 NDVI와 지표관리 인자의 관계식을 제안하고자 하였으며, 이를 실제 유역에 적용하여 적용성을 검증하였다. 본 연구에서 식생피복율과 NDVI의 관계식은 SPOT-5 영상으로부터 추출된 NDVI와 현지 식생조사 결과를 이용하여 유도하였으며, 이를 Drake 제안식(1997)과 비교한 결과, 본 연구에서 제안한 식이 Drake 식(1997)보다 더 우수한 결과를 나타내었다. 또한 NDVI와 지표관리 인자의 적정 상관관계식으로 Knijff(1999)가 제안한 관계식을 채택하였으며, 실측 토양침식량을 활용하여 적정 관계상수값을 제시하였다. RUSLE has been widely used for prediction of soil erosion in Korea. As the factors of RUSLE were suggested using observed data in agricultural land of middle-western of United State, verification is essential to apply to domestic mountain area. Cover management factor(C) is one of the most variable factors in time and space. The studies on correlation between NDVI and C factor are in progress abroad. In this study, the relationship equation between percent vegetation cover and C factor was formulated for domestic application, and was calibrated using measured data from experimental watershed. In this research, the relationship equation between percent vegetation cover and NDVI is derived using NDVI extracted from SPOT-5 image and field vegetation data. The equation proposed in this research was more suitable than Drake equation(1997). Also, for suggestion of appropriate relationship between NDVI and C factor, Knijff equation(1999) was selected, and the coefficients of this equation were suggested through the correlation analysis with measured soil erosion data.

미국의 재난관리체제

이종설,Lee, Jong-Seol 한국과학기술단체총연합회 2006 과학과 기술 Vol.39 No.10

Second TV를 위한 맞춤형 광고 서비스

이종설,신사임,임태범,이석필,Lee, Jong-Seol,Shin, Sa-Im,Lim, Tae-Beom,Lee, Seok-Pil 대한임베디드공학회 2008 대한임베디드공학회논문지 Vol.3 No.4

The 'Anytime, Anywhere' services have been the biggest topic in the recent digital broadcasting research area. The related applications for the Anytime and Anywhere Services are as follows: the personalized broadcasting based on the PVR (Personal Video Recorder) for the Anytime Services, and the DMB (Digital Multimedia Broadcasting), the mobile devices supporting the wireless network and the Second TV and so on for the anywhere services. The personalized broadcasting has been researched on the one of the killer applications in the various broadcasting environment - the ground wave broadcasting, the satellite broadcasting, IPTV and CATV broadcasting suchlike. The applied contents of the personalized broadcasting have advanced from the main contents for the broadcasting to the interstitial contents like advertisements and coupons, the personalized interstitial broadcasting needs to develop the technology about the generation, storing and management of the interstitial metadata. but, the personalized broadcasting has the limitation that the TV environment is somewhat difficult to support the personalized broadcasting individually, because all family usually share the main TV at home. The Second TV is possible to solve the environmental limitation. This paper designs and develops the static set top box at home, the Second TV and their multimedia streaming techniques for the personalized broadcasting of the contents including the interstitial contents.

TV-anytime 표준을 지원하는 멀티미디어 검색 및 지능화 서비스 시스템의 설계 및 구현

이종설(Jong-Sul Lee),이윤주(Yun-Ju lee),박우출(Woo-Chool Park),이석필(Seok-Pil Lee),조위덕(We-Duke Cho) 한국방송·미디어공학회 2002 한국방송공학회 학술발표대회 논문집 Vol.2002 No.-

트랜잭션 우선 순위 상승을 이용한 분산 실시간 병행수행제어 기법

이종설(Jong Sul Lee),신재룡(Jae Ryong Shin),조기형(Ki Hyung Cho),유재수(Jae Soo Yoo) 한국정보과학회 2001 정보과학회논문지 : 데이타베이스 Vol.28 No.3

실시간 데이타베이스 시스템이 분산환경으로 확장됨에 따라 기존의 실시간 병행수행 제어 기법을 분산환경으로 적용할 필요성이 대두되었다. 이에 본 논문에서는 중복 저장(replication)을 지원하는 분산 실시간 데이타베이스 시스템을 위한 효율적인 병행수행 제어 기법을 제안한다. 제안하는 기법은 중복 저장을 지원하는 분산 실시간 환경에서 완료준비 단계에 도달한 트랜잭션의 우선 순위를 상승시킴으로써 트랜잭션의 완료를 최대한 보장하며 완료 준비 단계에서 재시작 되는 트랜잭션을 줄이고 잠금 지연 시간을 최소화한다. 또한, 우선 순위가 상승된 트랜잭션이 점유한 데이타에 대한 대여(lending)를 허용함으로써 데이타를 차용(borrowing)한 트랜잭션의 대기시간이 감소되고 전체적인 시스템 성능이 향상되었다. 제안한 기법에 대한 성능 평가에서는 Firm 실시간 데이타베이스 환경에서 2 단계 완료 기법을 기반으로 DO2PL_ PA와 MIRROR 기법을 대상으로 트랜잭션의 도착율, 크기, 쓰기 가능성 및 데이타 중복율에 대한 마감시한 초과비율을 비교한다. As real-time database systems are extended to the distributed computing environment, the need to apply the existing real-time concurrency control schemes to the distributed computing environment has been made. In this paper we propose an efficient concurrency control scheme for distributed real-time database system. Our proposed scheme guarantees a transaction to commit at its maximum, reduces the restart of a transaction that is on the prepared commit phase, and minimizes the time of the lock holding. This is because it raises the priority of the transaction that is on the prepared commit phase in the distributed real-time computing environment. In addition, it reduces the waiting time of a transaction that owns borrowed data and improves the performance of the system, as a result of lending the data that the transaction with the raised priority holds. We compare the proposed scheme with DO2PL_PA(Distributed Optimistic Two-Phase Locking) and MIRROR(Managing Isolation in Replicated Real-time Object Repositories) protocol in terms of the arrival rate of transactions, the size of transactions, the write probability of transactions, and the replication degree of data in a firm-deadline real-time database system based on two-phase commit protocol. It is shown through the performance evaluation that our scheme outperforms the existing schemes.

여행자들의 지각된 가치가 여행상품 만족과 브랜드이미지 및 관계지속의도에 미치는 영향

이종설(Lee, Jong-Sul),양재영(Yang, Jae-Young),박영진(Park, Young-Jin) 한국관광레저학회 2017 관광레저연구 Vol.29 No.1

한류 콘텐츠를 위한 발음 기반 금기어 검색 시스템 개발

이종설(Lee, JongSeol),신사임(Shin, Saim),김다희(Kim, Dahee),장달원(Jang, Dalwon),장세진(Jang, Sei-jin),임태범(LIm, Tae-Beom) 한국방송·미디어공학회 2014 한국방송공학회 학술발표대회 논문집 Vol.2014 No.6

서비스지향성이 관계결속과 고객지향성에 미치는 영향

이종설(Lee, Jong-Sul) 한국서비스산업학회 2014 서비스산업연구 Vol.12 No.1

This study is the effect of the dependence on human resources compared to other companies the impact of cohesion in the relationship travel agents of highly pure hospitality, travel agency service orientation and customer orientation to be verified were carried out for the purpose. The results of the study, the management of service leadership and service system of relationship commitment was accepted. Therefore, Executive Officer of active service on-site visits, ongoing quality of service, measured environment provides the resources needed to improve the employee`s ability to constantly emphasized about the importance of service, management of service leadership, service system and provide the best service for a direct impact on relationship commitment. On the other hand, examining the impact of customer orientation and service orientation relationship has a positive effect on customer orientation and relationship bond.