현수교의 Flutter 저감을 위한 제어시스템

이후석(Lee Hu Seok),이진미(Lee Jinmi),황인호(Hwang Inho),이종세(Lee Jong Seh) 대한토목학회 2008 대한토목학회 학술대회 Vol.2008 No.10

현수교의 flutter 제어시스템 검증을 위한 시간이력해석

이후석(Lee Hu Seok),이진미(Lee Jinmi),하신용(Ha Sin yong),이종세(Lee Jong Seh) 대한토목학회 2009 대한토목학회 학술대회 Vol.2009 No.10

산사관광지의 매력속성, 지각된 가치 및 만족 간의 구조적 관계

이후석(Hoo-suk Lee),오민재(Min-jae Oh) 한국관광연구학회 2016 관광연구저널 Vol.30 No.1

This study found out structural relationships among the attractions of tourist region around a mountain temple, tourists’ perceived values and satisfactions. 402 samples which were acquired through questionnaire to ask tourists to Songnisan Beopjusa from June until July in 2015, were used as data. Analysis results were as follows; First, the results of factor analysis to verify dimension showed that attraction factors were 6 factors(education, authenticity, naturalness, interpretation, human service, convenience), that perceived value factors were 4 ones(price, quality, emotional, social), and satisfaction factor was single one. Second, the verification results of the hypothesis 1 were that such 4 factors as education, interpretation, human service and convenience of 6 attraction factors had on influence on the price of perceived values and that such 4 ones as education, authenticity, naturalness, and convenience had a meaningful influence on the quality of perceived values. In the influence relationship which the attractions of tourist region around a mountain temple had on emotional of perceived values, all the attraction factors(education, authenticity, naturalness, interpretation, human service, convenience) had a meaningful influence on emotional of the perceived values. Finally, tourist region around a mountain temple had on social of the perceived values, it was analyzed that all the factors of attraction had an influence on social of the perceived values. Third, the verification result of hypothesis 2 was that such 3 factors as quality, emotional and social except price of the perceived values had a significant influence on satisfactions.

저수지 생애주기 유지관리를 위한 성능저하예측 모델 연구

이후석(Huseok Lee),김란하(Ran-Ha Kim),조중연(Choong-Yuen Cho) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.1

2020년부터 시행된 「지속가능한 기반시설 관리기본법」에 의해 저수지는 체계적인 유지관리와 성능개선 등의 선제적인 관리로 노후화에 따른 생애주기 비용을 최소화하도록 관리해야 한다. 생애주기를 고려한 유지관리를 위해서는 공용기간이 증가함에 따라 지속적인 성능저하에 의해 수명이 종료되는 시점을 생애 주기적인 관점에서 도출하는 것이 필수적이며 이를 위해서 저수지의 성능저하예측 모델 개발이 요구된다. 본 논문에서는 저수지를 주요 복합시설인 제체, 여수로, 취수시설로 구분하고, 생애주기 유지관리를 위한 성능저하예측 모델을 개발하였다. 모델 개발을 위해 농어촌공사의 농업기반시설 시스템(RIMS; Rural Infrastructure Management System)이 관리 중인 유지관리 정보 데이터를 수집하였으며, 수집된 데이터를 통계적으로 분석하여 모델 개발에 활용 가능한 데이터를 선별하고 추세분석을 통해 모델을 개발하였다. 개발된 모델을 통해 저수지가 현행의 유지관리 체계에서 예상되는 기대수명과 미조치시 예상되는 기대수명을 예측하였으며, 현행 유지관리체계에서의 기대수명은 미조시치 기대수명보다 약 네 배가 증대되는 것으로 나타났다. 본 논문을 통해 제안된 모델을 활용하여 향후 저수지의 생애주기를 고려한 운영관리와 유지보수의 의사결정 지원이 가능할 것으로 판단된다. According to the Framework Act on Sustainable Infrastructure Management, which has been enforced since 2020, reservoirs should be managed to minimize life cycle costs caused by aging through preemptive management such as systematic maintenance and performance improvement. For maintenance in consideration of the life cycle, it is essential to derive the end of life due to continuous performance degradation as the common period increases. For this purpose, it is necessary to develop a performance-predicting model for reservoirs. In this study, a reservoir was divided into main complex facilities to develop a model for the maintenance of the life cycle. A model was developed for each facility. For model development, maintenance information data were collected under management by the Rural Community Corporation. The data available for model development were selected by analyzing the collected data. The developed model was used to predict the expected life expectancy of the reservoir in the current maintenance system and the expected life expectancy in the case of no action. By using the developed model, it is expected that it will be possible to support decision making in operation management and maintenance while considering the life cycle of the reservoir.

궤도유지보수를 위한 차량진동가속도 모니터링 시스템 구축

이후석(Hoo-Seok Lee),최일윤(Il-Yoon Choi),이준석(Jun S. Lee),전준창(Jun Chang Jeon),최승엽(Seung-Yeob Choi) 한국철도학회 2017 한국철도학회 학술발표대회논문집 Vol.2017 No.05

민속마을 관광객의 고유성 인식이 만족에 미치는 영향 -고유성과 무대화된 고유성 개념의 적용-

이후석 ( Hoo Suk Lee ),맹창호 ( Chang Ho Maeng ),오민재 ( Min Jae Oh ) 한국사진지리학회 2012 한국사진지리학회지 Vol.22 No.2

본 연구는 안동하회마을과 한국민속촌을 방문한 관광객을 대상으로 그들이 방문한 대상지별 특성에 따른 고유성 인식과 만족의 차이 그리고 고유성 인식과 만족 간에 영향관계가 존재하는지를 검증하고자 시도되었다. 연구결과는 다음과 같다: 첫째, 고유성 인식은 객관적 고유성, 구성적 고유성, 실존적 고유성의 차원으로 요약되었고 관광만족은 만족의 단일요인으로 요약되었다. 둘째, 하회마을과 한국민속촌 관광객의 고유성 인식과 만족에 대한 지역별 차이에서는 객관적 고유성, 구성적 고유성 차원에서 지역별 차이가 나타났다. 셋째, 고유성 인식이 만족에 미치는 영향에 대해서는 고유성 인식 모든 요인에서 만족에 유의미한 영향을 미치는 변수로 나타났으며, 구성적 고유성, 객관적 고유성, 실존적 고유성의 순으로 만족에 영향을 미치고 있었다. 그러나 하회마을과 한국민속촌 두 집단 간 차이가 있는지를 확인하기 위한 Z- Score에서는 모든 요인에서 통계적으로 유의한 차이가 나타나지 않았다. 그것은 안동하회마을과 한국민속촌 관광객의 고유성 인식이 만족에 미치는 영향에 대한지역 간 차이는 없다는 것을 의미한다. This study was attempted to verify that the difference and the relationship between tourists` (Andong Hahoe Folk Village and Yongin Korean Folk Village) perceived authenticity and satisfaction, according to the characteristics of their destination, existed. The results of this study were as follows; Firstly, perceived authenticity was summed up by objective authenticity, constructive authenticity, existential authenticity, Tourism satisfaction was summed up by the sole factor of satisfaction. Secondly, in perceived authenticity and satisfaction between Hahoe Folk Village tourists`` and Korean Folk Village tourists``, there were regional differences in the dimensions of objective and constructive authenticity. Thirdly, in the effect which perceived authenticity had on satisfaction, every factor of perceived authenticity had an meaningful effect on satisfaction, And constructive authenticity, objective authenticity, existential authenticity had an effect on satisfaction in order, Yet, there were no meaningful differences statistically in Z-Score to confirm that the differences between Hahoe Folk Village and Korean Folk Village existed, there were no regional differences in the effect which Hahoe Folk Village tourists`` and Korean Folk Village tourists`` perceived authenticity had on satisfaction.

충격계수 응답스펙트럼을 이용한 단경간 교량의 내하력 평가

이후석(Huseok Lee),노화성(Hwasung Roh),박경훈(Kyung-Hoon Park) 한국산학기술학회 2016 한국산학기술학회논문지 Vol.17 No.12

이전 연구에서 기존의 재하실험을 통한 교량의 공용 중 내하력 평가방법을 개선하기 위하여 충격계수 응답스펙트럼과 그에 따른 내하성능 변화 추정 방법이 제안되었다. 본 논문에서는 제안된 방법의 적용성을 검증하기 위하여 공용 중인 단순지지 단경간 교량에 대한 현장 동적특성 평가 실험을 수행하였다. 실험을 통해 상시 교통하중 상태에서 무선 가속도계를 이용하여 교량의 고유진동수 도출이 가능한 수준의 동특성 응답을 획득할 수 있었다. 대상 교량의 가속도 데이터로부터 동적거동은 1차 모드에 지배되며 준공 당시에 비해 공용 기간의 증가로 인해 고유진동수가 감소한 것으로 나타났다. 충격계수 응답스펙트럼으로부터 대상 교량의 발생 가능한 최대 충격계수를 추정하였다. 도출된 이전 및 현재의 고유진동수와 충격계수를 바탕으로 성능감소계수를 적용한 내하력 평가방법을 이용하여 성능변화를 추정하였다. 이전에 비해 공용내하력이 감소하였으나 설계 활하중을 상회하여 내하성능에는 문제가 없는 것으로 나타났다. 상시 교통하중 하에서의 가속도 계측 데이터와 충격계수 응답스펙트럼을 이용하는 제안된 내하성능 변화 추정 방법은 실제 교량에 적용 가능할 것으로 판단된다. In a previous study, the impact factor response spectrum and corresponding method for evaluating the load carrying capacity of bridges was suggested to improve the existing evaluation method. To verify the applicability of the suggested method, which is based on the frequency of bridges, the dynamic characteristic test for an actual single span simply-supported bridge was conducted. Through a field test under ambient traffic conditions, the dynamic response of the bridge was obtained using wireless accelometers and its fundamental frequency was identified. The peak impact factor was determined from the identified frequency and the impact factor response spectrum. The load carrying performance variation of the bridge was estimated considering the performance reduction factor, which was calculated using the current and previous natural frequency and impact factor. From the result, the load carrying capacity of the bridge was decreased, but the capacity was still enough because its value is greater than the design live load. Through the overall procedures and technical details presented in this paper, the suggested evaluation method can be applied to actual bridges with the acceleration data measured under ambient traffic conditions and the impact factor response spectrum.

관광객 시선이 관광동기와 만족도에 미치는 영향에 관한 탐색적 연구

이후석(Hoo Suk Lee),오민재(Min Jae Oh) 한국호텔외식관광경영학회 2004 호텔경영학연구 Vol.13 No.4

This study explored the effects that tourist`s gaze formed by watching `All-in` had on the tourism motivation and satisfaction, using the analysis method of multi-regression. the results are as follows: ①When tourist`s gaze formed by watching `All-in` was measured with five items, it appeared that tourists thought that SUBJIKOJI felt familiar and that its atmosphere would be special. but because there were many other tourism regions except SUBJIKOJI in Jejudo, SUBJIKOJI was not regarded as the main place for visiting. ②According to the results of factor analysis on tourism motivation, it was classified by `culture`, `novelty`, and `liminality` and the gaze of tourists who had familiar feelings was analyzed as the variable bringing about the motivation of `culture`. meanwhile, tourist`s gaze at its fitness of acting outdoors, familiar feeling, and such atmosphere as one`s being under illusion that he is a character worked on the factor of `신기성`, but didn`t have effects on the one of `liminality`. Therefore, it is thought that tourist`s gaze formed by watching `All-in` played the greatest role in drawing the motivation of ‘‘novelty’ ③It was analyzed that the tourism motivation had meaningful effects on the factor of `liminality` and the one of `liminality`. It appeared that the factor of `liminality` had greater effects on the satisfaction ④Both that `SUBJIKOJI` was fit for acting outdoors and that by watching `All-in` SUBJIKOJI felt familiar worked on tourist`s satisfaction.

Motivations of the Korean Christian Pilgrimage to Outbound

Lee Hoo-Suk(이후석) 대한관광경영학회 2009 觀光硏究 Vol.24 No.4

이 연구의 목적은 해외성지순례관광을 체험한 기독교(개신교)인의 신앙생활 정도에 따른 관광동기에 관한 차이를 분석하는 것이다. 해외성지순례 관광동기를 구성하는 요인은 ‘기원, 여가, 종교행사, 신앙, 성령, 연구’ 등 6개로 분석되었다. 성지순례 관광동기 요인 가운데 기원과 종교행사를 제외한 4개 요인이 성지순례 관광 만족에 영향을 미치는 것으로 파악되었다. ‘여가’동기가 가장 유의미한 영향을 미치는 변수로 나타났으며, 다음으로 ‘신앙’, ‘연구’, ‘성령’의 순으로 유의한 영향을 미치는 것으로 분석되었다. 신앙생활정도(직분, 신앙기간)에 따른 성지순례 관광동기요인에 관한 분석결과는 다음과 같다: 첫째, 직분에 따른 차이는 없고, 신앙기간에 따라 차이가 나는 동기요인은 기원, 성령으로 나타났다. 둘째, 직분에 따라 차이가 있지만, 신앙기간에 따른 차이는 없는 것은 신앙, 연구로 나타났다. 셋째, 종교행사는 신앙기간과 직분에 따라 모두 차이가 있는 것으로 분석되었다. 넷째, 여가는 직분, 신앙기간 모두 차이가 나지 않았다. 한편, ‘만족’ 차원에서는 직분에 따라 차이가 없고, 신앙기간에 따른 차이가 있는 것으로 분석되었다. 또한, 직분과 신앙기간의 상호작용효과를 보면 직분에 상관없이 5년 이상의 기간보다 5년 미만의 기간에서 기원, 종교행사, 성령 동기의 수준이 높았으며, 평신도는 5년 이상이 비평신도는 5년 미만의 기간에서 여가, 신앙, 연구 동기의 수준이 높게 나타났다. 그리고 직분과 신앙기간의 상호작용 효과가 ‘만족’ 차원에는 영향을 주지 않는 것으로 나타났으며, 직분에 상관없이 5년 이상의 기간이 5년 미만보다 만족 수준이 높은 것으로 분석되었다. The purpose of this paper is to analyze the tourism motivations and satisfactions according to the faith stages of the Christians who experienced the pilgrimage to outbound. Factors which consisted of the pilgrimage tourism motivations were 'petition, leisure, religious events, faith, the Holy Spirit, study'. Of the tourism motivations, four factors except petition and religious events had an influence on the satisfactions of pilgrimage. 'Leisure' motivation appeared to be a variable which had the most significant influence, followed by 'faith', 'study', 'the Holy Spirit' in order. The results of the analysis on pilgrimage tourism motivations were as follows : First, if there were no differences in the duties, the motivation factors which differed according to the faith period were petition and the Holy Spirit Second, if there were differences in the duties, the factors which didn't differ according to the faith period were faith and study. Third, it was analysed that religion events motivations had differences according to the faith period ad duties. Fourth, leisure motivations had no differences in duties and the faith period, and in the dimension of satisfactions motivations didn't differ according to duties but did according to the faith period. In addition, when the correlation effect between duties and the faith period was considered, both lay-believers and active lay-believers who had faith for less than 5 years than for more than 5 years showed a higher level of petition, religious events, and the Holy Spirit, and lay-believers in more than 5 years showed a higher level of leisure, faith and study motivations and so did active lay-believers in less than 5 years. The correlation effect between duties and the faith period had no influence on satisfactions. And regardless of duties, it was analyzed that those who had faith for more than 5 years had a higher level of satisfactions than those for less than 5 years.

설계하중 DB-18의 소규모 노후 교량 내하력 검토

이후석 ( Lee Huseok ),박경훈 ( Park Kyung Hoon ),선종완 ( Sun Jong Wan ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1

In this study, the results of the load carrying capacity evaluation were compared for old small bridges. From this study, it can be seen that there are bridges in the old bridges that exceed the design load and ensure the bridging performance higher than the rated load. The evaluation results will manage by data that confirms whether the safety of heavy weight vehicles is secured.