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崔廷煥(Choi, Jeong-Hwan),尹原錫(Yoon, Won-Seok),崔文容(Choi, Moon-Yong) 청운대학교 관광산업연구소 2009 관광산업연구 Vol.3 No.2
This research wishes to grasp not only the importance of hotel competitiveness reinforcement but also the value and awareness that hotel employees share consciously and unconsciously, and also is aimed at how hotel employees show their line of action and what types of organizational culture is considered to be important in the view of human resources management. Also, wish to examine what the difference is by hotel types and to analyze whether hotel employees' organizational culture types exerts its effect on organizational effectiveness. As the practical analysis result, can know that unfolding way of organizational culture types according to hotel organization member's' awareness becomes different and organizational effectiveness is different. Also, there is important item to hotel managerial and is grasped that customer can raise image about hotel organization member's raising organization members' organizational effectiveness if hotel organizational culture is formed well.
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국가핵심기술 관계망 구축을 통한 연관정보 분석연구: 디스플레이 기술을 중심으로
박세희(Se Hee Pak),윤원석(Won Seok Yoon),장항배(Hang Bae Chang) 한국전자거래학회 2021 한국전자거래학회지 Vol.26 No.2
경제 구조의 기술 의존성이 강해져 국가핵심기술의 중요성은 더욱 대두되고 있다. 하지만 기술 자체적 특성으로 인해 연관 범위가 추상적이고 국가핵심기술 고유의 특성상 정보공개가 제한적이기 때문에 보호대상이 될 기술의 범위를 정하는 것에 어려움이 있다. 이를 해결하기 위해 국가핵심기술과 연관성이 높은 중요 기술을 판별하는 데에 최적화 된 문헌 종류와 분석 기법을 제안하였다. 디스플레이 분야 국가핵심기술 키워드로 수집한 네 개 문헌종류(뉴스, 논문, 보고서, 특허) 데이터에 빅데이터 분석의 텍스트 마이닝 분석기법인 TF-IDF와 LDA 토픽 모델링을 적용하는 파일럿 테스트를 진행하였다. 그 결과로 특허 데이터에 LDA 토픽 모델링을 적용한 결과가 국가핵심기술과 연관성이 높은 중요기술을 추출하였다. OLED, 마이크로LED를 포함하여 디스플레이 전후방산업에 관련된 중요 기술을 판별 할 수 있었으며 이 결과를 관계망으로 시각화하여 국가핵심기술과 연관된 중요 기술의 범위를 명확히 하였다. 본 연구를 통해 기술이 가지는 연관범위의 모호성을 보다 명확히 하였으며, 국가핵심기술이 가지는 제한적인 정보공개 특성을 극복할 수 있다. As the dependence of technology on the economic structure increases, the importance of National Core Technology is increasing. However, due to the nature of the technology itself, it is difficult to determine the scope of the technology to be protected because the scope of the relation is abstract and information disclosure is limited due to the nature of the National Core Technology. To solve this problem, we propose the most appropriate literature type and method of analysis to distinguish important technologies related to National Core Technology. We conducted a pilot test to apply TF-IDF, and LDA topic modeling, two techniques of text mining analysis for big data analysis, to four types of literature (news, papers, reports, patents) collected with National Core Technology keywords in the field of Display industry. As a result, applying LDA theme modeling to patent data are highly relevant to National Core Technology. Important technologies related to the front and rear industries of displays, including OLEDs and microLEDs, were identified, and the results were visualized as networks to clarify the scope of important technologies associated with National Core Technology. Throughout this study, we have clarified the ambiguity of the scope of association of technologies and overcome the limited information disclosure characteristics of national core technologies.
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도종남 ( Do Jong-nam ),김낙영 ( Kim Nag-young ),심재원 ( Shim Jae-won ),이지영 ( Lee Ji-young ),이상래 ( Lee Sang-rae ),윤원석 ( Yoon Won-seok ),성봉석 ( Sung Bong-seok ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.2
토공부 시공 시 공간이 협소한 교대, 옹벽, 암거 등의 구조물 뒤채움부는 다짐시험 관리가 곤란하다. 또한, 노체부는 공기 단축 등에 의한 다짐관리 소홀에 우려가 있다. 이와 같은 문제는 현행 토공 다짐도 측정시험으로 주로 사용하는 평판재하시험 방법의 적용상 난이도가 높기 때문이다. 평판재하시험을 하기 위해서는 반력 역할을 하는 장비가 있어야 하고, 시험에 시간이 과다하게 소요되며 이 모든 과정이 인력에 의해서 이루어지므로 주관적 평가에 오류가 발생할 수 있다. 한편 이를 보완하기 위하여 소형충격재하시험을 활용한 다짐관리 기준이 제정되었으나 이 또한 인력운영에 한계가 발생할 수 있다. 따라서, 본 연구에서는 다짐관리를 간편하고 빠르게 토공부 다짐관리를 위한 자동화 시스템을 개발하고자 한다.
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소아 알레르기 환자에서 혈청 흉선과 활동화 조절 케모카인, 대식세포 유래 케모카인의 상승과 호산구 염증지표와의 연관성
정보현 ( Bo Hyun Chung ),이해성 ( Hae Sung Lee ),서현석 ( Hyeon Seok Seo ),박하늘 ( Ha Neul Park ),지그프리드바우어 ( Siegfried Bauer ),서성철 ( Sung Chul Seo ),윤원석 ( Won Suck Yoon ),정지태 ( Ji Tae Choung ),유영 ( Young Yoo ) 대한천식알레르기학회 2012 천식 및 알레르기 Vol.32 No.4
Background: Thymus and activation-regulated chemokine (CCL17) and macrophage-derived chemokine (CCL22) are known as important mediators in allergic inflammation. Recently many researchers have focused on these mediators, but the role of the serum CCL17 and CCL22 in allergic diseases in children are still controversial. The aims of this study were to compare serum levels of CCL17 and CCL22 between children with different manifestation of allergic diseases, such as bronchial asthma, allergic rhinitis and atopic dermatitis, to analyze relationship with blood eosinophil makers and to find clinical significance of these markers. Methods: A total of 49 children (14 bronchial asthma, 13 allergic rhinitis and 13 atopic dermatitis) and the 9 healthy control subjects were enrolled in this study. Clinical characteristics and serum chemokine (CCL17, CCL22) levels were analyzed. We examined whether serum levels of CCL17 and CCL22 would be related to serum immunoglobulin E levels, blood eosinophils and serum eosinophil cationic protein concentrations. Results: Serum levels of CCL17 and CCL22 were significantly higher in children with bronchial asthma and atopic dermatitis than that in controls. Serum levels of CCL17 and CCL22 were significantly related to serum immunoglobulin E levels, blood eosinophil counts and serum eosinophil cationic protein concentrations with different strength in children with allergic diseases. Conclusion: Serum CCL17 and CCL22 may play a crucial role in the chronic allergic inflammatory process and can be used as inflammatory markers. These suggest that serum CCL17 and CCL22 might be involved in the pathophysiology of allergic diseases in children.
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FFT 알고리즘을 이용한 거리센서의 노이즈 필터링에 관한 연구
장광수,윤원석 弘益大學校 科學技術硏究所 1999 科學技術硏究論文集 Vol.10 No.1
The objective of this study is to perform filtering on the noise which is generated in distance sensor for ACC. The purpose of ACC is to keep following vehicle velocity at lead vehicle velocity and to make the relative distance between lead vehicle and follow vehicle converge to the safety distance calculated by controller. By using advanced features of ACC, we can relieve driver's driving fatigue, reduce the traffic accidents and increase the road capacity. The relative distance is measured by distance sensor equipped at follow vehicle. But if the measured distance signal is contaminated by noise, for difference with real distance, overall ACC performance gets degraded, so we have to filter the distance signal. Therefore, digital filter is designed by using FIR or IIR filter and cut-off frequency is determined by FFT algorithm. In experiment, due to difficulties and risks of measuring relative distance between two vehicles in real driving situation, small test setup is used in the lab instead. In results, with using filtered distance values, we can obtain high performance for ACC. But FIR filter is required higher order equation than IIR filter to acquire sharp cut-off property.
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