• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.385-388
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• 2009

We have investigated the effect of the device structure on the performance of polycrystalline ZnO TFT and amorphous AZTO TFT with top gate and bottom gate structure. While the mobility of both TFTs showed relatively similar value in a top and bottom gate structure, bias stability was quite different depending on the device structure. Top gate TFT showed much less Vth shift under positive bias stress compared to that of bottom gate TFT. We attributed this different behavior to the defects formation on the gate insulator induced by energetic bombardment during the active layer deposition in a bottom gate TFT. We suggest the top gate oxide TFT would show more stable behavior under the Vgs bias.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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• pp.1033-1034
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• 2005

High resolution 2.1” QVGA LTPS LCD (190ppi) having high aperture ratio of 65% could be successfully developed using state-of-the-art SLS technology and active/gate storage structure. Cost effective P-MOS 6-Mask structure was used. Full gate and transmission gate circuits are integrated in the panel. The high aperture ratio was obtained by using active/gate capacitance structure, which can reduce storage capacitance area. The aperture ratio was increased to 65% from 49% of conventional gate/data capacitance structure. The brightness was increased from 180cd to 270cd without any degradation of optical properties such as contrast ratio, flicker or crosstalk.

• 간호행정학회지
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• 제20권4호
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• pp.414-425
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• 2014

Purpose: The purpose of this study was to identify hospital nurses' recognition of the team system and the effectiveness of the team system as an organizational structure. Methods: A self-report questionnaire was used to collect data from 247 general hospital nurses during 4 months in 2013. Analysis was done using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and factor analysis with SPSS 18.0. program Results: There was no significant difference in nurses' recognition of team structure (t=2.06, p=.153) or effect of team structure (t=0.36, p=.549) according to use of team system. In hospitals with a team system, there were positive correlations between recognition of the effect of the team system and age (r=.25, p=.033), and total clinical career (r=.26, p=.012). In hospitals not using a team system, nurses' recognition of team structure as an organizational system (r=.31, p<.001), nurses' recognition of team structure, total (r=.30 p<.001) correlated significantly with the effects of team system. Conclusion: Results of this study provide a retrospection view of the team system in nursing organizational systems. The nursing team system's ultimate goal needs to be confirmed for complementary nursing care. Also, more studies on nurses' perceptions of, and effectiveness of the team system are necessary.

• 한국콘텐츠학회논문지
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• 제19권3호
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• pp.539-547
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• 2019

본 연구의 목적은 팀 프로세스의 작은 세상 구조가 팀 성과에 미치는 영향을 탐색적으로 살펴보는 것이다. 관련 문헌을 고찰하여 팀 프로세스의 작은 세상 구조와 팀 성과 사이의 관계를 이론적으로 논의하였으며, 축구팀의 패스 데이터를 이용하여 실증적으로 분석하였다. 2014년 브라질 월드컵 경기의 패스 데이터를 수집하여 128개의 패스 네트워크를 구성하고 작은 세상을 나타내는 구조적 특성을 측정하였다. 이 과정에서 작은 세상의 정도를 측정하는 데 폭넓게 사용된 작은세상지수(small-world index)의 단점을 극복할 수 있는 새로운 지수를 개발하였다. 그리고 작은 세상 구조와 성과 사이의 관계를 밝히기 위하여 상관분석과 회귀분석을 실시하였다. 분석 결과에 의하면, 팀 프로세스의 군집성은 팀 성과와 지수함수의 관계가 있고 팀 프로세스의 연결성은 팀 성과와 로그함수의 관계가 있는 것으로 나타났다. 결과적으로 팀 프로세스의 작은 세상 구조는 팀 성과에 긍정적인 영향을 미치는 것으로 나타났다. 이론적 논의와 실증적 분석을 통해, 본 연구는 팀 프로세스의 작은 세상 구조가 팀원 사이의 업무 조정과 협업을 촉진하는데 효과적으로 작용하여 팀 성과에 긍정적인 영향을 미친다는 것을 밝혀내었다.

• 지식경영연구
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• 제6권2호
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• pp.67-90
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• 2005

Attention has been focused recently on the concept of shared cognition which encompasses the notion that effective team members hold knowledge that is overlapping and complementary with teammates. This shared cognition is expected to improve team effectiveness. In contrast to the continued efforts in developing theoretical approach of shared cognition, empirical studies are meager. Thus, we conducted an empirical study to investigate the role of shared cognition on team effectiveness. This study classifies shared cognition into two types, team mental model and transactive memory system, by shared meaning. A total of 121 new product development teams in the IT industry were surveyed for the data collection. The results of analysis can be summarized as follows: first, team mental model has a positive influence on team performance, team innovative behavior and team learning effect. And the relation with team mental model and team performance is moderated by the similarity of knowledge structure among the expert. Second, transactive memory system has a positive influence on team performance, team innovative behavior and team learning effect.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 추계학술대회 논문집 Vol.17
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• pp.136-139
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• 2004

The requirement of planarity, such as with-in-wafer nonuniformity, post thickness range, have become increasingly stringent as critical dimensions of devices are decreased and a better control of a planarity become important. The key factors influencing the planarity capability of the CMP process have been well understood through numerous related experiments. These usually include parameters such as process pressures, relative velocities, slurry temperature, polishing pad materials and polishing head structure. Many study have been done about polishing pad and its groove structure because it's considered as one of the key factors which can decide wafer uniformity directly. But, not many study have been done about polisher head structure, especially about polisher head plate design. The purpose of this paper is to know how the plate structure can affect wafer uniformity and how to deteriorate wafer yield. Furthermore, we studied several new designed plate to improve wafer uniformity and also improve wafer yield.

• ETRI Journal
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• 제25권3호
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• pp.149-155
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• 2003

A self-pulsating multisection distributed-feedback laser diode (DFB LD) can potentially realize all-optical clock extraction. This device generally consists of three sections, two DFB sections and one waveguide section. The most important variable in this device is detuning, which is the relative spectral position between the stop bands of two DFB sections. We fabricated a novel structure in which two gratings were located one over and one under the active layers. Each grating structure was independently defined in processing so that detuning, which is the prerequisite for self-pulsation, could be easily controlled. Observing various self-pulsating phenomena in these devices under several detuning conditions, we characterized the phenomena as dispersive Q-switching, mode beating, and self-mode-locking.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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• pp.1008-1011
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• 2005

In this study, the field emission display with carbon nanotube emitter is developed for the large size HDTV application. Two structures for electron beam focusing are developed on the typical top-gate cathode. The metal grid and focusing gate structure are proved to be effective for the focusing. The data switching voltage for the double gate structure is lower than 30V which is competitive value in respect of the cost for driver electronics. The brightness and color gamut are comparable to those of the commercial product such as CRT.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.347-350
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• 2003

Optimization of the luminance, luminous efficiency, and address voltage margin characteristics has been made on the delta color array PDP with various hexagonal shape subpixels. The optimal subpixel and electrode designs are obtained for the 42-inch high-definition PDP ($1,366{\times}768$) with the fine pixel pitch less than 0.7 mm. The hexagonal delta array structure shows more improved characteristics than that of the normal delta array structure with rectangular shape subpixels.

• 대한조선학회 특별논문집
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• 대한조선학회 2005년도 특별논문집
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• pp.206-210
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• 2005

As design trends has changed to have flexible aft hull structure, increased power output and stiffer shafting system, owners and classification societies have more concerned about shaft alignment. In the shaft alignment analysis, there are many uncertainties which are related in propeller generated force, bearing stiffness, crank shaft model and etc. in this study, it is focused on the effect of crankshaft model by comparing between equivalent model and actual crankshaft model.