http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배열충돌제트에서 횡방향유동성분에 따른 열/물질전달 특성 고찰
윤필현,이동호,조형희,Yoon, Pil-Hyun,Rhee, Dong-Ho,Cho, Hyung-Hee 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.2
The local heat/mass transfer coefficients for arrays of impinging circular air jets on a plane surface are determined by means of the naphthalene sublimation method. Fluid from the spent jets is constrained to flow out of the system in one direction. Therefore, the spent fluid makes a crossflow in the confined space. The present study investigates effects of jet-orifice-plate to impingement-surface spacing and jet Reynolds number. The spanwise- and overall-averaged heat/mass transfer coefficients are obtained by numerical integrating the local heat transfer coefficients. The local maximum heat/mass transfer coefficients move further in the downstream direction due to the increase of crossflow velocity. At the mid-way between adjacent jets, the heat/mass transfer coefficients have a small peak owing to the collision of the adjacent wall jets and are affected strongly by the crossflow. The effect of the crossflow occurs strongly at the small orifice-to-impingement surface distance.
팀원의 참여와 직무만족 간의 관계에서 팀 업무유연성과 집단잠재력의 영향
윤필현(Yoon, Pil Hyun),한주희(Hahn, Ju Hee) 한국인사관리학회 2012 조직과 인사관리연구 Vol.36 No.1
팀 특성과 조직성과 간의 관계를 다룬 연구는 팀 맥락에서 종업원의 자율성과 참여 등을 촉진하는 이른바 ‘자율경영팀(self-managed work team)’ 구축이 주된 관심이 되고 있다. 이와 함께 팀의 자율경영적 특성이 어떻게 팀 구성원들의 참여와 직무만족 수준을 높이는가에 대한 연구는 궁극적으로 조직효과성 증진을 위한 팀 연구를 수행함에 있어 매우 중요하다 할 수 있다. 본 연구는 팀의 자율경영적 특성의 도입으로 인한 효과를 팀원의 참여와 직무만족 간의 관계를 통해 살펴보고, 이러한 관계에서 집단잠재력의 효과를 위계적 선형모형(HLM)을 통해 실증하는데 그 목적이 있다. 본 연구는 다음과 같은 측면에서 기존 연구와 차별화 된다. 첫째, 본 연구의 주제와 관련하여 개인이나 집단과 같이 설명하고자 하는 대상의 수준을 이론적 배경을 통해 살펴보았으며, 실제로 이론을 통해 파악한 수준, 자료를 측정한 수준 그리고 분석의 수준을 일치시키도록 하였다. 둘째, 팀 연구에서 요구되는 분석의 수준을 고려함과 동시에, 그 동안 실증이 부족했던 팀 수준의 특성인 집단잠재력의 효과를 확인하고, 이러한 집단잠재력이 구성원들의 참여와 직무만족 간에 어떤 영향을 미치는지를 알아보았다. 셋째, 팀 수준에서 팀 업무 유연성이 구성원 개인의 참여적 행동에 어떤 영향을 미치는지를 알아보았다. 넷째, 팀의 자율경영적 특성의 맥락에서 팀 수준의 변인 간의 영향력을 검증하기 위해, 팀 업무 유연성이 집단잠재력에 미치는 영향을 살펴보았다. 분석 결과 개인수준에서 참여는 직무만족에 유의한 정(+)의 영향을 미치는 것으로 확인되었으며, 팀 업무유연성은 종업원의 참여적 활동에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 또한 위계적 선형 모형을 활용하여 팀 구성원들이 공유하는 집단잠재력의 인식 정도가 높을수록 개인의 직무만족 정도가 높아진다는 것을 확인하였다. 마지막으로 팀 업무유연성과 집단잠재력 간의 관계를 살펴본 결과, 두 변인은 서로 유의미한 정(+)의 관계를 보였다. 본 연구에서 사용된 변인들은 팀의 자율경영적 특성을 구성하는 핵심 개념이라 할 수 있는데, 지금까지 이와 관련된 영향 관계를 집단수준에서 확인하는 연구가 거의 없었다는 점에 본 연구의 의의가 있다. The research dealing with the relations between the characteristic & performance of a team has put its major concern in the so-called ‘establishment of self-managed work team’ to promote employees’ self-management and participation in the context of a team. Together with this, it might be right to say that the research on how a team’s self-managed characteristic enhances the level of the team workers’ participation and job satisfaction is very important in carrying out the research on a team for ultimately enhancing organizational effectiveness. This research is aimed at looking at the effect produced by introducing a team’s self-managed characteristic through the relations between a team worker’s participation and job satisfaction, and proving the effect of group potency having a moderated effect in such relations through Hierarchical Linear Model. This research is differentiated from the existing ones from the following aspects: First, in regard to this study topic, this research looked at the level of the subject this study in tends to explain as an individual or group through theoretical backgrounds, and actually tried to coincide with the level grasped through theory, the level of data measurement, and level of analysis. Second, together with the consideration of the level of analysis required in research on a team, this research confirmed the effect of group potency which is the characteristic of a team level whose substantiation has not been sufficient all this while, and looked at what influence the group potency has on the relations between team workers’ participation and job satisfaction. Third, this research looked at what influence a team’s task flexibility at a team level has on individual team workers’ participatory behavior. Fourth, in an effort to verify the influence between the variables at a team level from the context of a team’s self-managed nature, this research also looked at the influence of a team’s task flexibility on group potency. As the result of analysis, it was found that participation at an individual level had a significant positive effect on job satisfaction while a team’s task flexibility had a significant positive effect on employees’ participatory behavior. In addition, through the hierarchical Linear Model, this research confirmed that the higher the awareness level of a team workers-shared group potency, the higher an individual worker’s job satisfaction. Lastly, as a result of looking at the relations between a team’s task flexibility and group potency, the two variables showed mutually significant positive relations. The variables used in this research can be an essential concept comprising a team’s self-managing characteristic, and this researcher thinks that this study has its significance in that it’s rare to find other research works confirming the influential relations involved in the establishment of self-managed characteristic at a group level.
태양광/풍력 복합발전의 보조 전력발생장치 개발에 대한 연구
박세준(Se-Jun Park),윤필현(Pil-Hyun Yoon),임증열(Jung-Yeol Lim),이정일(Jeong-Il Lee),차인수(In-Su Cha) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
The developments of the hybrid energy are necessary since the future alternative energies that have no pollution and no limitation are restricted Currently power generation system of MW scale has been developed.<br/> However, even photovoltaic system cannot always generate stable output with ever-changing weather condition In tills paper, sub power generator for hybrid system(photovoltaic 5OO[W], wind power generation 400[W]) was suggested.<br/> Sub power Generator that uses elastic energy of spiral spring to photovoltaic system was also added for the present system. In an experiment, when output of photovoltaic system gets lower than 24[V] (charging voltage), power was continuously supplied to load through the inverter by charging energy obtained from generating rotary energy of spiral spring operates m DC generator. Also, control algorithm of sub power generator is used genetic algorithm(GA).
R134a용 터보냉동기의 원심압축기 개발 Part 1 : 원심압축기 설계
이용덕,정진희,이현구,윤필현,김길영,Lee, Yongduck,Jeong, Jinhee,Lee, Hyeonkoo,Yoon, Pil-Hyun,Kim, Kilyoung 한국유체기계학회 2000 한국유체기계학회 논문집 Vol.3 No.4
The present study has been conducted to design the high efficiency centrifugal compressor for a R134a turbo-chiller. The centrifugal compressor consists of an impeller with splitters, two vaneless diffusers, a low-solidity vaned diffuser and a volute. A cycle analysis program for a turbo-chiller was developed to obtain compressor design parameters and requirements. We have designed the high efficiency centrifugal compressor by applying the repeated design procedure including a meanline design, a 3D geometry generation and fluid dynamic loading calculations.
강병복(Byung-Bog Kang),윤정필(Jeong-Phil Yoon),박세준(Se-Jun Park),윤필현(Pil-Hyun Yoon),임중열(Jung-Yeol Lim),차인수(In-Su Cha) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
Digital environment that is represented to internet is displacing business way of industry and business achievement way with the fast speed being giving great change on life whole, improve existence business process utilizing internet and Web connection technology, information superhighway to tradition industrialist manufacture and e-transformation's propulsion that wish to maximize productivity and administration efficiency is spread vigorously. In this paper, we wish to accomplish generation equipment's heighten stability and believability through remote monitoring and control of BIPV system. This paper describes the design of the monitoring system for sensing the monitoring data and indirect controlling of the BIPV system. Most of the conventional monitoring system depend on the special hardware and software.<br/> Basic design goal of monitoring system is to provide the convenience for the user and the portability for the system.<br/> In order for the system to fulfill its requirements, it was designed using Labview GUI facility based on the Windows 2000 environment of IBM PC compatible and Add-on card based on the TCP/IP protocol. Advantage of the monitoring system are a personnel expenses curtailment effect, free of the place restriction and unmanned system of the generation plants, etc.