http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Impact of Culture on Virtual Teams’ Performance
박기우,Tushar Jain 한국경영정보학회 2009 Information systems review Vol.11 No.1
Since ‘virtual teams’ are not bounded by geographical dimensions, culture becomes an important determinant of their success. Though cultural diversity provides unique opportunities to build up new ideas, it can also create problems in the midst of individual interactions and eventually result in poor performance. With little research on this topic, this study examines the relationship between culture and virtual teams’ performance. An experiment was conducted followed by the survey based on subjects’ perceptions on the experiment. The results show that cultural diversity has significant impact on virtual teams’ performance through confusion and conflict in virtual teams. This study empirically proves the fact that conflict is one of the most critical antecedents of a virtual team’s performance with high R-square values in both experimental and control groups. In addition, this research introduces and empirically tests a new construct, ‘confusion’ which turns out to be also important in the virtual team’s performance research, and the relationships among confusion, conflict and the virtual team’s performance. Next, the findings confirm the importance of studying virtual teams’ performance research from the cultural perspective.
발표상황에 대한 가상현실노출과 웹기반 인지적 개입의 통합 프로그램 효과 검증
박기우,윤혜영 한국융합학회 2022 한국융합학회논문지 Vol.13 No.1
본 연구에서는 웹기반 인지재구조화 교육과 결합된 VR 노출 프로그램이 사회 불안 감소에 미치는 영향을 확인하였다. 실험 집단(n=12)은 웹기반 인지 재구조화 교육과 가상현실노출 프로그램(VRET)에 4회기 참석하였고, 비교집단(n=15)은 동일한 가상현실노출 프로그램(VRET) 이외에 연설기법에 대한 교육을 받았다. 두 집단 모두 프로그램 참여 전,후에 자기보고식 증상심각도 척도와 암묵적 해석 편향을 측정하였으며, 4주 후에 추후평가를 실시하였다. 프로그램 직후 실험집단과 비교집단 모두 사회적 불안 수준이 감소하였으나, 4주가 지난 후 실험집단 에서만 긍정적인 해석 편향이 증가하였고, 부정적인 해석 편향이 감소하였으며, 감소된 사회불안 수준이 유지되었다. 이러한 결과는 VRET 치료효과를 증진시키기 위해서 자신의 생각에 대한 객관적 점검을 시도해 볼 수 있는 인지적 개입이 결합될 필요가 있음을 시사한다. In this study, the effect of VR exposure programs integrated with web-based cognitive restructuring education on reducing social anxiety was confirmed. The experimental group (n=12) received a 10~15 minute session of web-based cognitive intervention and a 20-minute session of virtual reality exposure therapy. The comparison group (n=15) received a 10~15 minute session of web-based speech education and a 20-minute session of virtual reality exposure therapy. After 4 weeks, the experimental group had an increase in positive interpretation bias, a decrease in negative interpretation bias, and a decreased level of social anxiety. These results suggest that the combination of self-help form of web-based cognitive intervention in the treatment of social anxiety disorder can improve the therapeutic effect of VRET.
Robust Disturbance Compensation for Servo Drives Fed by a Matrix Converter
박기우,차동경,이교범 전력전자학회 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.5
This paper presents a time-varying sinusoidal disturbance compensation method (based on an adaptive estimation scheme) for induction motor drives fed by a matrix converter. In previous disturbance accommodation methods, sinusoidal disturbances with unknown time-invariant frequencies have been considered. However, in the new method proposed here, disturbances with unknown time-varying frequencies are considered. The disturbances can be estimated by using a disturbance accommodating observer, and an additional control input is added to the induction machine drive. The stability analysis is carried out considering the disturbance estimation error and simulation results are shown to illustrate the performance of the proposed solution.