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곽기영,Gi Young Gwak 대한리더십학회 2013 리더십연구 Vol.4 No.4
리더십에 대한 다양한 이론들이 지난 세기동안 많은 학자들에 의해 정립․발전되어왔으나, 이러한 리더십 이론들은 유연성이 부족하고 고착되어 있어 한 리더의 리더십 스타일을 온전하게 설명하지 못하는 것이 사실이다. 이는 보이지 않는 곳에서 리더의 리더십 행동과 스타일을 조정하는 요인들이 있음을 나타내는 것이며, 가장 대표적인 것 중의 하나가 리더 개인의 성격이다. 현재까지 성격이 리더십 에 미치는 영향에 대한 연구는 많이 이루어지지 않았고, 특히 국내 연구는 해외 연 구에 비해 논문 수가 적었으며, 연구의 주제로 삼은 성격의 종류도 한정적이었다. 본고에서는 국내에서도 리더십 연구 시 성격을 주제로 한 연구가 활발하여질 수 있도록, 다양한 측면으로 분석할 수 있는 성격을 변수로 활용한 최근 연구동향을 검토해보고, 리더십에 있어서의 성격의 중요성을 제시하였다. 끝으로, 본고에서 정리한 성격의 내용을 토대로 향후의 리더의 성격에 대한 연구과제를 논의하였다. Over the past century, theories on leadership have been defined․ developed by many scholars. However, existing theories are often rigidly structured and inflexible, leaving less room for describing a leader’s style of leadership. This indicates that there are numerous other aspects which affect leadership behavior and style of leaders, most representative aspect being the personality of a leader. Up until this day, there has only been a limited number of studies researching the corelation between personality and leadership, and what is available are mostly authored by foreign scholars utilizing limited number of personality types. This thesis emphasizes the importance of personality on leadership. Also, reviews on the recent trends in researches utilizing personality as multi-faceted variable are presented, so that it may stimulate domestic research efforts in studying the corelation between leadership and personality. Lastly, future research directions and headings on personality of leaders are discussed based on the contents of this thesis
곽기영,여영구,김영곤,최경석 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1
본 연구에서는 제지 공장의 건조공정 내 실린더와 지필에서의 열 전달 공정에 대한 선형모델을 구하였다. 실제조업 및 측정 데이터에 근거하여 정상상태의 PDE모델을 구하고 실린더 및 지필두께의 profile에 따라 시간의 변화에 대하여 실린더와 지필의 온도변화 및 수분함량의 변화를 알아보았으며 PDE모델을 선형화하여 상태공간모델로 유도하여 전달함수를 도출하였다. 아울러 선정된 입력변수를 변화시켜 공정의 동특성을 파악하고 안정성을 규명하였다. 또한 정확도가 입증된 neural network를 이용한 모델과의 비교 분석을 통하여 PDE모델의 유효성을 검증하였다.
인터넷 경매사이트에서의 신뢰와 참여의도 결정요인에 관한 연구 : 모델생선전략 접근
곽기영,김효정 한국경영과학회 2005 韓國經營科學會誌 Vol.30 No.3
This research investigates the determinants of customer intention to participate in Internet auction. Based on technology acceptance and trust related studies, our research proposes a theoretical model consisting of factors such as perceived usefulness, perceived ease of use, institution based trust, beliefs on sellers, trusting beliefs, and participation intention. For examining the relationships implied by the research model, a field study using a survey methodology for data collection was conducted. The data were analyzed using AMOS based on the structural equation modeling, a second-generation multivariate technique, which has gained distinct advantages over other technique. After some model modification according to model generating strategy approach, this study shows that trusting beliefs have significant effects on the participating intention in Internet auction site. In conclusion, implications are discussed along with limitations and further research direction.
곽기영 한국지식경영학회 2019 지식경영연구 Vol.20 No.1
This tutorial introduces procedures and methods for performing structural equation modeling using R. For this, we present the whole process of analyzing the structural equations model from the confirmatory factor analysis to the path diagram generation using the lavaan package, which is relatively well evaluated among the R packages supporting the structural equation modeling, together with the R program codes. Considering that research applying structural equation modeling techniques is the mainstream in a variety of social sciences, including business administration, and that there is growing interest in open source R, this tutorial focuses on researchers who are looking for alternatives to traditional commercial statistical packages and is expected that it will be a useful guidebook for them.
소프트 골프 스윙 동작을 위한 인체 시뮬레이션의 운동역학 분석
곽기영,유미,소하주,김성현,김남균,김동욱,Kwak, K.Y.,Yu, M.,So, H.J.,Kim, S.H.,Kim, N.G.,Kim, D.W. 대한의용생체공학회 2010 의공학회지 Vol.31 No.2
The purpose of this study was to analyze the golf swing motion for a soft golf clubs and regular golf club. Soft golf is a newly developed recreational sports for all ages, including the elderly and the beginners of golf. To quantify the effect of using soft golf club, which much lighter club than regular clubs, a motion analysis has been performed using a 3D optoelectric motion tracking system that utilizes active infrared LEDs and near-infrared sensors. The subject performed swing motion using a regular golf club and a soft golf club in turn. The obtained motion capture data was used to build a 3D computer simulation model to obtain left wrist, elbow shoulder and lumbar joint force and torque using inverse and forward dynamics calculations. The joint force and torque during soft golf swing were lower than regular golf swing. The analysis gave better understanding of the effectiveness of the soft golf club.
R을 이용한 구조방정식모델링: 매개효과분석/조절효과분석 및 다중집단분석
곽기영,Kwahk, Kee-Young 한국지식경영학회 2019 지식경영연구 Vol.20 No.2
This tutorial introduces procedures and methods for performing structural equation modeling using R. To do this, we present advanced analysis methods based on structural equation model such as mediation effect analysis, moderation effect analysis, moderated mediation effect analysis, and multiple-group analysis with R program code using R lavaan package that supports structural equation modeling. R is flexible and scalable, unlike traditional commercial statistical packages. Therefore, new analytical techniques are likely to be implemented ahead of any other statistical package. From this point of view, R will be a very appropriate choice for applying new analytical techniques or advanced techniques that researchers need. Considering that various studies in the social sciences are applying structural equations modeling techniques and increasing interest in open source R, this tutorial is expected to be useful for researchers who are looking for alternatives to existing commercial statistical packages.