• 한국지리정보학회지
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• 제4권4호
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• pp.8-20
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• 2001

본 연구는 공공시설의 적지선정을 위해 기존의 방법과는 다른 방법론을 제시하였다. 본 연구의 적지선정모형은 다양한 입지인자를 고려하여 입지인자의 상대적인 중요도에 따라 다단계로 가중치를 부여하여 후보지를 평가하는 방법이다. 여기에 GIS의 도면중첩방법(지도대수)을 적용하여 여러 다양한 입지요인을 만족시키는 후보지를 찾아내는 방법을 제시하였다. GIS를 이용한 적지분석은 간단하면서도 효과적이고, 많은 자료를 시각화할 수 있는 장점이 있다. 이 방법을 사례지구인 대구시 달성군 군청사의 입지선정에 적용하여 후보지를 평가하였다.

• 한국지역사회생활과학회지
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• 제20권1호
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• pp.103-121
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• 2009

Increased consensus among gerontologists exist on the need to pay greater attention to the reciprocal relationship between the social and spatial in order to understand the construction of aged identity and everyday lives of old people. With urbanization, spaces are increasingly age-graded and as a consequence, urban elders are socially isolated from the community. In this study, we examine the social interaction patterns in various places specifically designated for the elderly, such as the Senior Center, Senior Welfare Center, and Hall for the Aged in Seoul. Main purpose of this study is to understand everyday life experiences of space the elderly people residing in the city go through. Data were gathered through qualitative, case study method. Results show that such spaces were important sites for social interaction for urban elderly who lacked social spaces after retirement and active parenting role. Also, it was shown that each place presents different contexts for social interactions and certain components of social class differences existed. Heterogeneity within the participants of each place was also observed. Quite strong stereotypes about certain places were also observed among the urban elders. Based on these results, importance of developing a 'community perspective' in the study of old age is discussed.

• 한국전기전자재료학회논문지
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• 제15권3호
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• pp.220-226
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• 2002

Amorphous $Sb_{2-x}Bi_xTe_3$ (x = 0.0, 0.5 and 1.0) thin films were prepared by vacuum evaporation. The resistivity of 7he films decreases from 1.4{\times}10^{-2}$ to $8.84{\times}10^{-5}\Omega cm$ and the type of conductivity changes from p to n with the increase of the x value of the films. D.C. conduction studies on these films ate performed at various electric fields in the temperature range of 303-403 K. At low electric fields, two types of conduction mechanisms, i.e. the variable range hopping and the phonon assisted hopping are found to be responsible for the conduction, depending upon the temperature. The activation energy decreases from 0.082 to 0.076 eV in the temperature range of 303-363 K and from 0.47-0.456 eV in the second range of 363-403 K, indicating the shift of the Fermi level towards the conduction band edge and hence the change of the conduction from P to n type with the increase of the Bi concentration. Poole-Frankel emission dominates at high fields. The shape of the potential well of the localized centre is deduced and the mean free path of the charge carriers is also calculated.

• 한국간호교육학회지
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• 제25권3호
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• pp.300-311
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• 2019

Purpose: The purpose of this study was to review and synthesize the existing literature on the experience of nursing students in simulation. Methods: A systematic review was undertaken using meta-ethnography. Eight databases were searched up to January 2014 for peer-reviewed studies, written in Korean and English, that reported primary data, used identifiable and interpretative qualitative methods, and offered a valuable contribution to the synthesis. Results: Nine studies were identified, with quality appraisal undertaken. Three key concepts were generated: ambivalence of simulation practice, learning by reflection, and building up of the competency as a future nurse. Six sub-concepts emerged: double sidedness of simulation setting; feeling ambivalence of simulation; learning from others; learning from self-reflection; improvement of confidence by role experience; and internalization of nursing knowledge. A line of argument has been developed based on the themes generated. Conclusion: The findings from this qualitative synthesis and other related literature indicated the importance of capability of educator and extension of the simulation system to facilitate effective simulation-based education.

• Progress in Superconductivity
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• 제6권1호
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• pp.32-36
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• 2004

To investigate the influence of strip width and inter-strip separation on the ac loss, arrays of parallel strips with different widths and separations were prepared. Studies on the hysteresis-loss characteristics of multifilamentary YBCO films were performed. The local magnetic field due to magnetization currents is measured by a scanning Hall probe microscope. Based on these results a conceptual design for a low loss YBCO coated conductor is suggested.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 추계학술대회 논문집 Vol.17
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• pp.260-263
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• 2004

During the last few years, there have been many efforts on the fabrication of electronic and optical devices based on semiconductor nanowires. Room-temperature ultraviolet lasing in GaN nanowire, ultraviolet light sensing in ZnO nanowire, and dramatically improved hall mobility in Si nanowire have been demonstrated in this article. The studies on semiconductor nanowire based electronic and optical device is reviewed.

• Progress in Superconductivity
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• 제13권3호
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• pp.151-157
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• 2012

In this paper, we used E-J constitutive law and H-formulation to calculate magnetic field profile, current density, and magnetization of high temperature superconductor (HTS) placed in time varying applied magnetic field. Finite element method (FEM)-based software, Comsol Multiphysics 3.5a, was employed to simulate 2-dimensional model of a superconducting thin strip. The numerical results based on Kim's critical state model were compared with the case of strip in a perpendicular field in the Brandt's paper as well as experimental data observed by Scanning Hall Probe and SQUID.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.874-875
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• 2015

속도의 가변이 많지 않은 모터 application에서는 벡터 제어보다 홀센서를 사용한 BLDC제어를 주로 사용하고 있다. 하지만 기본적으로 홀센서의 기구적인 취약점으로 인하여 BLDC 제어에 문제점이 발생하는 현상을 확인할 수 있다. 본 논문에서는 기존의 BLDC전동기 구동에 필요한 3개의 홀센서를 이용한 전동기 구동방식에서 하나의 홀센서를 이용하여 회전자의 위치를 추정하는 방법에 대해 제안하였다. 이러한 방식을 통해 홀센서의 취약 부분인 열에 의해 손상되는 경우나 기구적으로 위치오차를 가지고 있는 경우에도 정상적으로 위치정보를 습득할 수 있도록 하여 정상적인 BLDC제어를 할 수 있도록 하는 방안을 제안하였다.

• 정보관리학회지
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• 제20권1호
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• pp.93-119
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• 2003

정보추구행태를 연구한 문헌에서 제시된 모형들을 검토하고, 비교 ·분석하여, 정보추구행태에 관한 경험적 연구 설계에 활용할 수 있는 일반적 모형들을 제시하였다. 어떤 복합적 상황, 직업, 역할, 학문 영역에도 적용할 수 있는 모형에 초점을 맞추어 선택하였다. 논의된 모형은 Wilson(1981. 1996), Krikels(1983). Dervin(1983, 1996), Ellis(1989), Ellis, Cox와 Hall(1993), Kuhlthau(1991), Leckie, Pettigrew와 Sylvain(1996), Johnson(1997)에 의해 제시된 모형들이다. 모형이 구축된 시점을 중심으로 연대순으로 살펴보고, 비교 · 분석하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 추계학술대회 논문집 Vol.15
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• pp.370-374
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• 2002

Many compound semiconductors which have high carrier mobility and small band gap have attentive in application of various practical a field. Especially, InSb served for Hall device and magnetic resistor such as magnetic sensor because InSb thin film has high mobility. Many studies on InSb thin film deposistion because In and Sb has been very different feature of vapor pressure ($10^{-4}$ times) When In and Sb deposited. In this paper studied it In and Sb deposited simultaneously using by method of co-sputtering deposotion. This process, get to effects of manufacture process simplification. After that this paper observed micro structure and electronic behavior of InSb thin film using by co-sputtering and we study properties of magneto-resistance by annealing.