테마파크 이벤트프로그램 屬性의 滿足度에 관한 硏究

朴玹祐(Park, Hyun-Woo),孫善美(Son, Seon-Mi) 청운대학교 관광산업연구소 2008 관광산업연구 Vol.2 No.2

In recent years, theme parks and events have become the most favorite modes of the mass tourism and leisure. This article analyses the difference from the satisfaction of event programs' attributes between visitors at two theme parks in Korea. The data were collected from 286 visitors visiting Korea's two representative theme parks regarded to lead the future industry in Korea. The empirical analysis showed that Everland theme park had four more satisfied attributes: 'uniqueness of event program', 'educational achievement', ' smooth progress', and 'safety on the event zone', and Lotteworld theme park had five ones: 'interesting', 'diversity', 'contents appropriate to the event purpose', 'the events everyone can enjoy', 'information'. The findings provide the information on the strength and the weakness of the two theme parks. Although this study has some limitations, future studies should be conducted in this field.

테마파크 웹사이트 비교 연구

박현우 ( Hyun Woo Park ) 한국이벤트컨벤션학회 2006 이벤트 컨벤션 연구 Vol.2 No.1

This study is intended to evaluate their convenience, interaction and substantiality on the web-site of top 3 theme parks in Korea. To achieve the purpose, this study presented theoretical ground for theme parks and made a use of the comparative method of web-site of the theme parks. The objective of this study is the website of three Amusement parks; Ever Land, Lotte World and Seoul Land in Korea which ranked world fiftieth in the Amusement Business Journal on 2003. As a result of this analysis, it was found that the establishment of convenience and accessibility of a web-site that potential users(visitors) of the theme parks are able to find information more easily. In addition, it is needed to strengthen of internet multi-media use.

부상기술 도출의 계량정보학적 분석모델 개발

박현우,이창환,여운동,Park, Hyun-Woo,Lee, Chang-Hoan,Yeo, Woon-Dong 한국과학기술정보연구원 과학기술정보센터 2007 Journal of Information Science Theory and Practice Vol.38 No.4

특허 데이터는 기술적 속성과 시장 측면을 모두 보유하고 있어서, 독창성, 기술적 타당성 및 상업적 가치의 명시적인 기준을 충족시키고 있고, 실제로 장기간에 걸쳐 혁신의 모든 분야를 포괄하고 있으며, 특허당 인용횟수는 양적인 빈도뿐만 아니라 특허의 질적 중요성을 나타내준다. 본고에서는 특허 정보의 분석을 통한 계량정보학적인 접근방법을 적용함으로써 미래에 산업적으로 새롭게 발전할 가능성이 있는 부상기술을 도출하기 위한 분석모델과 방법론을 설정하고, 세계특허를 대상으로 적용함으로써 미래에 등장할 부상기술을 도출하고자 한다. Patent data have both properties of technological and industrial information. They satisfy explicit requirements for originality, technological validity, and commercial value. They comprise all fields of innovation for a long period of time. They show their own qualitative importance by forward citation of them. In this paper, we attempt to establish and apply an analytical model and process based on informetric approach using patent information in order to predict emerging technologies which have the possibility of industrial development in the future.

지르코니아 광페룰 사출성형용 WC 코아 핀의 Diamond Like Carbon 코팅

박현우,정세훈,김현영,이광민,Park, Hyun-Woo,Jeong, Se-Hoon,Kim, Hyun-Young,Lee, Kwang-Min 한국재료학회 2010 한국재료학회지 Vol.20 No.11

A diamond-like carbon (DLC) film deposited on a WC disk was investigated to improve disk wear resistance for injection molding of zirconia optical ferrule. The deposition of DLC films was performed using the filtered vacuum arc ion plating (FV-AIP) system with a graphite target. The coating processing was controlled with different deposition times and the other conditions for coating, such as input power, working pressure, substrate temperature, gas flow, and bias voltage, were fixed. The coating layers of DLC were characterized using FE-SEM, AFM, and Raman spectrometry; the mechanical properties were investigated with a scratch tester and a nano-indenter. The friction coefficient of the DLC coated on the WC was obtained using a pin-on-disk, according to the ASTM G163-99. The thickness of DLC films coated for 20 min. and 60 min. was about 750 nm and 300 nm, respectively. The surface roughness of DLC films coated for 60 min. was 5.9 nm. The Raman spectrum revealed that the G peak of DLC film was composed of $sp^3$ amorphous carbon bonds. The critical load (Lc) of DLC film obtained with the scratch tester was 14.6 N. The hardness and elastic modulus of DLC measured with the nano-indenter were 36.9 GPa and 585.5 GPa, respectively. The friction coefficient of DLC coated on WC decreased from 0.2 to 0.01. The wear property of DLC coated on WC was enhanced by a factor of 20.

램파의 분산성과 파 반사가 시간반전과정에 미치는 영향의 이해

박현우,김승범,손훈,Park, Hyun-Woo,Kim, Sung-Bum,Sohn, Hoon 한국전산구조공학회 2009 한국전산구조공학회논문집 Vol.22 No.1

이 연구에서는 얇은 판형구조물의 손상탐지에 널리 사용되어오는 램파에 시간반전(time reversal)개념의 적용성을 이론적으로 규명한다. 고전적 시간반전 음향학에 의하면, 센서에서의 출력신호를 시간영역에서 반전 후 재입사시켜 원래의 가진점으로 돌려보내면, 그 가진점에서 원래 입력신호가 복원된다. 그러나 램파에 시간반전과정을 적용하게 되면 램파 고유의 분산성과 판 경계에서의 파 반사로 인해 시간반전성이 복잡한 양상을 띠게 된다. 이러한 램파의 시간반전성을 보다 잘 이해하기 위해 이 연구에서는 램파의 시간반전과정을 이론적으로 규명한다. 특히, 램파의 내부모드분산, 다중모드분산, 그리고 판 경계면에서의 램파의 반사가 시간반전성에 미치는 영향을 정식화하였다 간단한 수치예제를 통해 이 연구에서 제시된 이론적 발견들의 타당성을 검증한다. This study investigates the applicability of the time reversal concept in modem acoustics to the Lamb waves, which have been widely studied for defect detection in plate-like structures. According to conventional time reversal acoustics, an input signal can be reconstructed at an excitation point if an output signal recorded at another point is reversed in the time domain and emitted back to the original source point. However, the application of a time reversal process(TRP) to Lamb wave propagations is complicated due to velocity and amplitude dispersion characteristics of Lamb waves and reflections from the boundaries of a structure. In this study, theoretical investigations are presented to better understand the time reversibility of Lamb waves. In particular, the effects of within-mode dispersion, multimode dispersion, amplitude dispersion, and reflections from boundaries on the TRP are theoretically formulated. Simple numerical case studies are conducted to validate the theoretical findings of this study.

Various Technologies for Simultaneous Removal of NO_x and SO₂ from Flue Gas

박현우,엄성현,Park, Hyun-Woo,Uhm, Sunghyun The Korean Society of Industrial and Engineering C 2017 공업화학 Vol.28 No.6

석탄화력발전소를 포함한 다양한 산업설비에서 유해 대기오염물질이 배출되고 있으며, 이러한 오염물질은 인체 건강과 자연 생태계에 영향을 준다. 특히, 질소산화물($NO_x$)와 이산화황($SO_2$)은 인체 건강에 악영향을 주는 미세먼지($PM_{2.5}$) 형성에 원인물질로 알려져 있다. 이러한 $NO_x$와 $SO_2$ 배출을 저감하기 위해서 선택적 촉매 환원(SCR)과 습식 탈황 공정(WFGD)으로 결합된 혼합 시스템이 사용되고 있으나, 높은 설치비용 및 운전비용을 필요로 하며, 유지보수의 문제점, 기술적인 한계점을 가지고 있다. 최근에 이러한 혼합 시스템을 대체하기 위한 $NO_x$, $SO_2$ 동시 저감 기술이 연구되고 있으며, 제안된 기술들은 흡수, 고도 산화(AOPs), 저온 플라즈마(NTP), 전자 빔(EB) 등이 있다. 이러한 기술들은 강한 수용성 산화제 및 산화력을 가진 화학활성종에 의한 $NO_x$, $SO_2$를 $HNO_3$, $H2SO_4$ 형태로의 산화 반응, 기-액 계면에서 $HNO_3$와 $H2SO_4$ 흡수 반응, 화학 첨가제에 의한 중화 반응을 기본으로 하고 있다. 본 논문에서는 각각의 동시 저감공정에 대한 기술적인 특징과 대용량 처리 공정 응용을 위한 향후 전망을 정리하였다. Harmful air pollutants are exhausted from the various industrial facilities including the coal-fired thermal power plants and these substances affects on the human health as well as the nature environment. In particular, nitrogen oxides ($NO_x$) and sulfur dioxide ($SO_2$) are known to be causative substances to form fine particles ($PM_{2.5}$), which are also deleterious to human health. The integrated system composed of selective catalytic reduction (SCR) and wet flue gas desulfurization (WFGD) have been widely applied in order to control $NO_x$ and $SO_2$ emissions, resulting in high investment and operational costs, maintenance problems, and technical limitations. Recently, new technologies for the simultaneous removal of $NO_x$ and $SO_2$ from the flue gas, such as absorption, advanced oxidation processes (AOPs), non-thermal plasma (NTP), and electron beam (EB), are investigated in order to replace current integrated systems. The proposed technologies are based on the oxidation of $NO_x$ and $SO_2$ to $HNO_3$ and $H_2SO_4$ by using strong aqueous oxidants or oxidative radicals, the absorption of $HNO_3$ and $H_2SO_4$ into water at the gas-liquid interface, and the neutralization with additive reagents. In this paper, we summarize the technical improvements of each simultaneous abatement processes and the future prospect of technologies for demonstrating large-scaled applications.

도서관 주문을 암송하면 도서관의 블루오션을 찾을 수 있나니라!

박현우,Park, Hyeon-U 한국도서관협회 2006 圖協會報 Vol.47 No.5

사서들이 꿈꾸는 도서관- 내가 꿈꾸는 도서관

박현우,Park, Hyeon-U 한국도서관협회 2006 圖協會報 Vol.47 No.4

외측 인대 손상의 자기공명영상 소견들이 수술 소견 및 신체검사와 항상 일치할까?

박현우,Park, Hyun-woo 대한족부족관절학회 2021 대한족부족관절학회지 Vol.25 No.1

Physical examination and surgical findings and symptoms are often inconsistent with magnetic resonance imaging (MRI) findings when diagnosing chronic ankle lateral ligament instability, and confirmed surgical findings are used as the gold standard in most clinical studies. Anterior drawer testing is considered unreliable because normal findings are highly variable, and its accuracy ranges from 50% to 100%. Furthermore, radiographic stress imaging, such as in anterior drawer stress view, is performed under manual stress or using a stress device, and its findings also vary widely and confuse when interpreting stress views. The average accuracy of MRI findings is around 85% (range, 66%~91.7%), and thus, cannot be used as a primary indicator for surgery. For patients with suspected lateral ankle ligament instability, based on symptoms and physical examination findings, MRI may be useful for identifying lesions in ankle joints and for differentiating them from other conditions.

2010 예테보리세계도서관정보대회를 다녀와서

박현우,Park, Hyeon-U 한국도서관협회 2010 圖協會報 Vol.51 No.10