호텔從事員의 變革的 리더십이 職務滿足 및 成果에 미치는 影響

具本鎬(Koo, Bon-Ho),崔誠氣(Choi, Seong-Gi),李相正(Lee, Sang-Jung) 청운대학교 관광산업연구소 2011 관광산업연구 Vol.5 No.2

The leadership and management skill to work effectively can guarantee the successful of the organization . Therefore, for the hotel business to survive in severe competition, hotel manager's leadership and hotel employee's capability to comply it is the key to the good performance of the organization. This study has limitations in some expects. First, we have just selected target hotels located in Seoul. Second, we surveyed the hotel employee working in high-class hotels. That may lead to the unsuccessful verification of the leadership performance. Third, we also took the employee's view point into consideration in studying the relationship between hotel manager and hotel employee, thus the hotel manager perspective was not counted in. To overcome the limitations in this study, more deep research and better methodology are hoped to be employed. The studies toward the leader, not toward the employee should also be considered in the future research.

태권도 앞굽이 서기 자세의 실전성과 기능성에 대한 운동역학적 비교

구본호(Bon Ho Koo),박성진(Sung Jin Park),홍건(Gun Hong),문황운(Hwang Woon Moon),박영진(Young Jin Park),G. S. Virdi 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.38

Poomsae is the core system of Taekwondo which is based on the practical techniques as a type of training Taekwondo. And the training of Taekwondo can be done through training of Poomsae. Now, The importance of Poomsae becomes greater and the competitions of Poomsae takes an more interest from people. However, the quantitative system of Poomsae techniques are not set. Especially, the stance of Taekwondo should be led among the all the Taekwondo researches because it is the most important factor of the base posture to perform all the Taekwondo movement. The purpose of this study is to compare the Apkubi stance for the actual fighting in the beginning of Taekwondo with the revised Apkubi stance for the competition after 2005 which is the most frequently performed in Poomsae for black belt holders. To achieve this goal, we observed kinematic and kinetic data as follows: Stance width and length, Center of Body Mass Height, Weight Distribution of both feet and Kicking Time for each Kick, Muscle Activities (RMS), Ground Reaction Force, the range of Center of Pressure. 10 male Poomsae Athletes participated in this study and data was collected 6 IR cameras of 60 frames/s with 2 AMTI Force Plates and MES 9000 EMG System. Kinetic data were analyzed by Kwon3D XP. The results showed that significant differences in Kicking Time in Apchagi and Dolryuchagi and Stance Width. Besides the Range of support foot`s CoP, the RMS of Support leg(Rectus femoris, Vastus lateralis, Vastus medialis and Biceps femoris) have differences between both type of apkubi stance but no significant difference.

웹서비스와 스마트폰앱을 이용한 연안해양모델 예측자료의 시각화시스템 구현

김형우,구본호,우승범,이호상,이양원,Kim, Hyung-Woo,Koo, Bon-Ho,Woo, Seung-Buhm,Lee, Ho-Sang,Lee, Yang-Won 한국공간정보학회 2014 한국공간정보학회지 Vol.22 No.2

최근 해양레포츠 산업이 블루오션으로 떠오르고 있는데, 해양레포츠는 조류, 수온, 염도 등과 같은 다양한 환경조건에 영향을 받기 때문에 관측자료 뿐만 아니라 모델 예측자료도 매우 필요한 정보이다. 본 연구에서는 연안해양모델인 FVCOM(Finite Volume Coastal Ocean Model)에서 산출된 예측자료를 웹 및 스마트폰을 통해 제공하는 시각화시스템을 구현하였다. 이를 위하여 FVCOM 자료에 내삽과 샘플링 등의 전처리를 하여, 조위, 수온, 염도의 래스터 이미지와 조류(유속, 유향)의 벡터 데이터베이스를 구축하였고, 스프링 프레임워크(Spring Framework)를 활용하여 REST(Representational State Transfer) 기반의 API(Application Programming Interface)를 제공하는 웹서비스를 구축하였다. 또한 데이터베이스 자료를 데스크톱 및 이기종의 스마트폰에 탑재시킴으로써 크로스플랫폼(cross-platform) 시각화 환경을 실현하였다. Ocean leisure sports have recently emerged as one of so-called blue ocean industries. They are sensitive to diverse environmental conditions such as current, temperature, and salinity, which can increase needs of forecasting data as well as in-situ observations for the ocean. In this context, a Web-based geovisualization system for coastal information produced by model forecasts was implemented for use in supporting various ocean activities. First, FVCOM(Finite Volume Coastal Ocean Model) was selected as a forecasting model, and its data was preprocessed by a spatial interpolation and sampling library. The interpolated raster data for water surface elevation, temperature, and salinity were stored in image files, and the vector data for currents including speed and direction were imported into a distributed DBMS(Database Management System). Web services in REST(Representational State Transfer) API(Application Programming Interface) were composed using Spring Framework and integrated with desktop and mobile applications developed on the basis of hybrid structure, which can realize a cross-platform environment for geovisualization.

토오크 맥동량에 의한 전압원 PAWM 인버터의 평가

이치환,구본호,권우현,Lee, Chi-Hwan,Koo, Bon-Ho,Kwon, Wo-Hyen 대한전자공학회 1989 전자공학회논문지 Vol. No.

본 연구는 인버터로 구동되는 유도전동기에서 발생되는 토오크 맥동을 표현하는, 고조파 토오크 함수 HTF(harmonic torque function)를 제안하고, 컴퓨터 시뮬레이션과 실험을 통하여 HTF의 타당성을 입증하였다. 제안된 HTF는 고조파 전류의 크기 뿐만 아니라 위상까지 고려하므로서 부하변동에 무관한 고조파 토오크 함수가 되었으며, 이를 six-step. SPWM 및 TPWM의 펄스 폭 제어 인버터에 적용하여 비교하였다. 그 결과 PAWM 인버터에서의 우수한 제어방법이 선택되었다. 한 주기당 펄스수가 9이하에서는 six-step이, 출력전압 크기와 토오크 맥동의 측면에서, SPWM 및 TPWM보다 우수함을 알 수 있었다. In this paper, a new HTF(Harmonic torque function) which takes into account the phasor of harmonic current, and which represents torque ripple content of induction motor is proposed. Through experiments and computer simulations using direct-quadrature two axis model, the proposed HTF is proved to be valid. Applying this function, six-step, SPWM and TPWM pulse-amplitude-width-controlled inverters are evaluated and compared with each other. A good control strategy for PAWM inverters was chosen from the results. It turns out that TPWM is superior to SPWM in torqur ripple content and output voltage amplitude of fundamental wave and six-step is better than PWM when CR is 9.

칼라 영상처리에 의한 과일분류시스템

최연호(Youn-Ho Choi),부기동(Ki-Dong Bu),구본호(Bon-Ho Koo) 한국산업정보학회 2000 한국산업정보학회논문지 Vol.5 No.3

Kinematic Comparison of Dolgaechagi between Excellentand Non-excellent Male Taekwondo Athletes

박성진(Sung Jin Park),구본호(Bon Ho Koo),홍건(Gun Hong),문황운(Hwang Woon Moon),박영진(Young Jin Park),G. S. Virdi 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.38

2008년 베이징 올림픽 이후 성공적인 발차기에 대한 다득점 가능성이 태권도 경기 규칙의 변화로 반영되고 있다. 최근에는 회전하여 차는 몸통공격 발차기의 득점이 2점이 되면서 태권도 선수들 간에 회전하여 차는 방식의 발차기가 빈번히 행해지고 있다. 이 회전하여 차는 발차기는 일시적으로 선수의 시야가 상대선수에게서 벗어나며 행해지는 공격으로 뒤차기나 돌개차기가 이에 해당하는 발차기이다. 따라서 향후 태권도 겨루기 경기에서 돌개차기에 대한 비중이 높아질 것으로 예상되며 그 중요성이 더욱 강조되고 있다. 본 연구는 8명의 남자 태권도 선수를 대상으로 돌개차기의 발차기 시간을 기준으로 우수집단 4명과 비우수집단 4명으로 나누어 각 그룹 간 차이를 운동학적 변인을 통하여 비교하였다. 측정된 돌개차기 동작의 분석을 위해 사용된 시스템은 (주)비솔 사의 Kwon3D XP 동작 분석 소프트웨어와 6기의 IR camera(60 frames/s, Motion Master, Visol Inc)이며 모든 피험자는 헬렌헤이즈 마커셋(Helen Hayes marker set)에 따라 전신에 반사마커를 부착하였다. 연구결과 분석을 위해 나눈 국면별로 두 집단 간 전체 발차기 시간과 국면별 발차기 시간에 유의한 차이를 나타내었다. 특별히 두 집단 간 제 1국면(Initial Trunk Rotation)의 수행시간과 전체 발차기 시간이 유의한(p<0.01) 차이를 나타내었고 이는 우수집단과 비우수집단을 나누는 기준에 영향을 미친 것으로 사료된다.

청소년의 내재화 및 외현화 문제행동과 삶의 만족도 간의 관계 : 그릿(Grit)의 조절효과를 중심으로

김현지(Kim, Hyun Ji),구본호(Koo, Bon Ho),이현우(Lee, Hyun Woo) 학습자중심교과교육학회 2021 학습자중심교과교육연구 Vol.21 No.9

목적 본 연구는 청소년들을 대상으로 내재화 및 외현화 문제행동이 그들의 삶의 만족도에 미치는 영향을 파악하고 그릿의 조절효과를 확인하고자 실시되었다. 방법 이를 위해 한국아동⋅청소년패널조사 2018의 제1차 조사 중1코호트 자료를 활용하였으며, 분석방법은 구조방정식모형(Structural Equation Model : SEM)을 적용하였다. 결과 본 연구에 대한 결과는 다음과 같다. 첫째, 청소년의 문제행동 중 주의집중을 상대적으로 가장 많이 경험하는 것으로 나타났으며 청소년의 내재화 및 외현화 문제행동, 그릿, 삶의 만족도는 성별에 따른 유의미한 차이가 있는 것으로 확인되었다. 둘째, 청소년의 내재화 및 외현화 문제행동은 삶의 만족도와 부적 상관을 보였으며 그릿과 삶의 만족도는 정적 상관으로 나타났다. 셋째, 청소년의 내재화 문제행동과 그릿은 삶의 만족도에 대해 상호작용효과가 나타났으나 외현화 문제행동에 대해서는 상호작용효과가 없는 것으로 나타났다. 결론 이상의 연구결과를 바탕으로 내재화 문제행동을 많이 보이는 청소년의 삶의 만족도를 향상시키기 위해 개인 변인인 그릿의 개입 방안을 제안하였으며, 이에 따른 청소년의 교육적⋅상담적⋅정책적 시사점을 제시하였다. Objectives This study aimed to understand the effects of internalizing/externalizing problem behaviors on the life satisfaction of adolescents, and also to verify the moderating effects of grit. Methods For this, this study utilized the Cohort Data 1 of the first survey of Korean Children and Youth Panel Survey 2018. In the analysis method, the Structural Equation Model(SEM) was applied. Results The results of this study are as follows. First, among problem behaviors of adolescents, the attention was relatively the most experienced, and the internalizing/externalizing problem behavior, grit, and life satisfaction of adolescents showed significant differences according to gender. Second, the internalizing/externalizing problem behaviors of adolescents showed negative correlations with life satisfaction while the grit and life satisfaction had a positive correlation. Third, the internalizing problem behavior and grit had interaction effects on the life satisfaction of adolescents while the externalizing problem behavior had no interaction effects. Conclusions Based on such results, this study suggested the intervention measures with grit as a personal variable to improve the life satisfaction of adolescents with lots of internalizing problem behaviors, and also presented the implications in the aspect of education, counseling, and policy for adolescents.

친환경절연재의 절연성 평가

최은혁(Eun-Hyeok Choi),구본호(Bon-Ho Koo),김이국(Lee-Kook Kim),이광식(Kwang-Sik Lee) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.5

산업사회의 발달과 더불어 신뢰성 높은 양질의 전기에너지와 운전 및 보수의 간편화, 계통 운용의 신뢰성, 안전성 확보가 요구되고 있다. 따라서 본 논문은 각종 전력설비에서 SF6을 대체할 수 있는 친환경절연제로 연구되고 있는 N₂-O₂ 혼합가스(N₂:O₂=100 : 0, 79 : 21, 60 : 40, 40 : 60) 절연파괴특성을 究明하여 이를 SF?가스의 특성과 비교하였다. 이상의 연구 결과, 제조공기와 Dry-Air 절연특성을 구명함으로서 각종 전력응용 설비의 절연설계에 SF? 대신 친환경적인 모의공기를 사용 가능함을 본 연구에서 究明하였다. 제조공기를 이용한 친환경적인 절연재 사용으로 지구의 온난화현상 감소에 크게 기여할 것으로 기대된다. With the improvement of industrial society, the high quality electrical energy, simplification of operation and maintenance, ensuring reliability and safety are being required. This paper compares breakdown characteristics in SF? gas with N₂/O₂ Mixture gas(N₂:O₂=100 : 0, 79 : 21, 60 : 40, 40 : 60) as using widely in High Voltage insulation eqipment with the characteristics in different media which are focused on environmentally friendly gases. As an append result of research, the results are fundamental data for electric insulation design of Distribution Power Facilities which will be studied and developed in the future. And we could make an environment friendly gas insulation material with mataining dielectric strength by N₂/O₂ Mixture gas which generates a lower lever of the global warming effect.

관절경적 후방십자인대 재건술에 있어서 Transtibial Two Tunnel방법과 Modified Tibial Inlay방법의 비교

정영복,태석기,염재광,구본호,Jung, Young Bok,Tae, Suk Kee,Yum, Jae Kwang,Koo, Bon Ho 대한관절경학회 1998 대한관절경학회지 Vol.2 No.2

From 1989 to 1994, authors have reconstructed the posterior cruciate ligament(PCL) in 51 knees with an autogenous central one-third of the patellar tendon by transtibial two tunnel technique, but there were not a few cases of unfavorable results. So from January 1995, we have reconstructed the PCL deficient knees by "modified tibial inlay technique" to avoid the grafted tendon abrasion at the posterior opening of the tibial tunnel(killer turn). Purpose of this study was to compare the results of two surgical techniques and what its advantages and disadvantages are. We could follow up 39 cases of transtibial two tunnel techique group(group A) more than one year, average being 23.7 months and 21 cases of modified tibial inlay technique group(group B) more than 12 months, average being 14.7 months. The clinical results were evaluated by the OAK knee scoring system ($M{\ddot{u}}ller$'s criteria) and the posteror stress roentgenography (push view) with Telos stress device compared with the uninjured knees. The arthroscopic second-look findings were also evaluated. In group A : The $M{\ddot{u}}ller$'s knee score was average 80.1 points, the posteror displacement in push view was average 4.4mm at the last follow up. There were 17 cases(44%) of unfavorable results which showed unstable posterior displacement more than 4mm compared with the uninjured knee in push view. Among the 19 cases of arthroscopic second look examinations, nearly normal PCL appearances of the grafted tendons were noted only in 9 cases(47%). In group B : The $M{\ddot{u}}ller$'s knee score was average 86.7 points, the posterior displacemnet in push view was average 3.6mm at the last follow up. There were 5 cases(23.8%) of unfavorable results which showed unstable posterior displacement more than 4mm compared with the uninjured knee in push view but 4 out of 5 cases showed 6mm posterior displacement in push views. Among the 7 cases of arthroscopic second-look examinations, 6 cases(86%) showed nearly normal PCL appearances of the grafted tendons. In modified tibial inlay technique of PCL reconstruction, it was easier to pull out the BPTB and in cases of remained laxed meniscofemoral ligament it was easier to preserve the remained structures than transtibial two tunnel technique. We expect the "modified tibial inlay technique" may solve the problem of grafted patellar tendon abrasion at the posterior orifice of tibial tunnel and may contribute to the successful PCL reconstruction.

트레드밀 충격완화 개선에 따른 운동 과학적 분석

이재석(Lee, Jae-Suk),구본호(Koo, Bon-Ho),임태강(Lim, Tae-Kang),허승은(Hur, Seung-Eun),문황운(Moon, Hwang-Woon) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.3

The purpose of this study is to consider the difference between impacts on treadmills during cardiac exercise using treadmills. Subjects were focused on 13 20-year-old students who are currently enrolled in E University, Kyungki Province. Through this study, with the result of peak value, the measurement of the impact on each treadmill was; Treadmill A > Treadmill D = Treadmill C > Treadmill B. Among the stages used in this study, at 7th stage(running), Treadmill B showed the least impact. The frequency of the impact domain(9-20 Hz) showed the result of Treadmill A = Treadmill D = Treadmill C > Treadmill B on low speed, 1st stage(walking), activated treadmill. However, on high speed, like 7th stage(running), almost no statistical differences were shown.