• 한국항만경제학회지
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• 제31권3호
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• pp.167-186
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• 2015

본 논문은 부산항 신항 배후단지에 위치한 항만물류창고 업체들에 대한 원가관리 실태를 점검하고, 향후 업체들을 지원할 수 있는 원가관리 모델을 제시하여 그 이론과 방법을 연구하였으며, 이를 동 지역의 사례업체인 K사에 직접 적용해 봄으로써 그 모델이 동 지역 업체들의 원가관리에 유용하다는 것을 규명하는데 그 목적을 두고 있다. 이에 따라 개별 원가계산 관리 모델로서 전통적 원가계산, 활동기준 원가계산(ABC), 시간동인 활동기준 원가계산(TDABC)의 3가지 모델을 제시하여 비교 연구하였으며, 최소이익 원가관리 모델로서는 공헌이익 분석 모델을 제시해서 연구하였다. 3가지 개별 원가계산 관리 모델 중에서는 TDABC가 가장 진일보되고 유용한 모델이라는 것을 규명할 수 있었으며, 공헌이익 분석 모델은 동 지역 업체들의 최소이익 관리 모델로서 적합하다는 것을 확인할 수 있었다.

• Design & Manufacturing
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• 제15권1호
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• pp.21-25
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• 2021

When the product is removed from the mold after molding during the sheet metal molding process, elastic recovery causes a springback phenomenon. Much research has been done to minimize this phenomenon. In this study, V-bending experiments were conducted using galvanized steel sheets, stainless steel, and aluminum sheet materials, using a total of nine types of thin sheet materials of 1.0t, 1.5t, and 2.0t, respectively. Molding analysis and experimental data were compared and analyzed. In the case of galvanized steel sheets, it was considered that the springback phenomenon occurs more frequently in molding analysis than in experiments. It was considered that the springback phenomenon occurs greatly in the experiment, not the interpretation of the molding of the stainless steel plate and the aluminum plate. It was considered that the springback occurrence tendency of the molding analysis and the experiment was the same, and the springback occurrence error rate of the molding analysis and the experimental result was about 4.0%.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2009년도 추계학술대회 논문집
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• pp.149-151
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• 2009

This paper gives a comparative analysis on the luminous efficiency of the bulb type LED lamps. we compare and analyze the measurement values bulb type LED lamps using both photogoniometer and integrating sphere. The volt and watt of one 1map are 220 V and 7 W, respectively. The volt and watt of other one are 100 V and 5.3 W, respectively. the values of those were 79.7 1m/W and 76.9 1m/W in the integrating sphere, respectively. Similarly, the values of those were 80.2 1m/W and 79.3 1m/W on the photogoniometer, respectively. As a result, the value of luminous efficiency can be measured using either integrating sphere or absolute goniometer regardless of the difference in case of bulb type LED lamps.

• 한국해양공학회지
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• 제34권4호
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• pp.253-262
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• 2020

This study provides a comparative analysis of experiments-based enhancements and sensitivity evaluations for the structural design of an automatic ocean salt collector under various load conditions. The sizing variables of the structural members were considered as design factors. The strength and weight performances were selected as output responses. The design of experiments used in the comparative study consisted of the orthogonal array design, Box-Behnken design, and central composite design. The response surface model, one of the metamodels, was applied to the approximate model generation. The design enhancement performance metrics, including numerical costs and weight minimization, according to the design of experiments, were compared from the best design case results. The central composite design method showed the most enhanced design results for the structural design of the automatic ocean salt collector.

• Earthquakes and Structures
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• 제7권5호
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• pp.667-689
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• 2014

Structural walls (also known as shear walls) are one of the common lateral load resisting elements in reinforced concrete (RC) buildings in seismic regions. The performance of RC structural walls in recent earthquakes has exposed some problems with the existing design of RC structural walls. The main issues lie around the buckling of bars, out-of plane deformation of the wall (especially the zone deteriorated in compression), reinforcement getting snapped beneath a solitary thin crack etc. This study compares performance of a typical wall designed by different standards. For this purpose, a case study RC shear wall is taken from the Hotel Grand Chancellor in Christchurch which was designed according to the 1982 version of the New Zealand concrete structures standard (NZS3101:1982). The wall is redesigned in this study to comply with the detailing requirements of three standards; ACI-318-11, NZS3101:2006 and Eurocode 8 in such a way that they provide the same flexural and shear capacity. Based on section analysis and pushover analysis, nonlinear responses of the walls are compared in terms of their lateral load capacity and curvature as well as displacement ductilities, and the effect of the code limitations on nonlinear responses of the different walls are evaluated. A parametric study is also carried out to further investigate the effect of confinement length and axial load ratio on the lateral response of shear walls.

• 대한전자공학회논문지SD
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• 제40권1호
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• pp.20-28
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• 2003

In this paper, we present results of the comparative analysis of the flicker phenomena in the poly-Si TFT-LCD and a-Si:H TFT-LCD arrays for the development and manufacturing of wide-area and high-quality TFT-LCD displays. We used four different types of TFTs; a-Si:H TFT, excimer laser annealed (ELA) poly-Si TFT, silicide mediated crystallization (SMC) poly-Si TFT, and counter-doped lateral body terminal (LBT), poly-Si TFT. We defined the electrical quantity of the flicker so that we could compare the flickers quantitatively for four different 40" UXGA TFT-LCDs. We identify three factors contributing to the flicker, such as charging time, kickback voltage and leakage current, and analyze how much each of three factors give rise to the flincker in the different TFT-LCD arrays. In addition, we suggest and show that, in the case of the poly-Si TFT-LCD arrays, the low-level (minimum) gate voltages should be carefully chosen to minimize the flicker because of their larger leakage currents compared with a-Si TFT-LCD arrays.

• 디지털산업정보학회논문지
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• 제19권4호
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• pp.117-126
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• 2023

Traditional markets, formed naturally, often feature aged buildings and facilities that are susceptible to fire. However, the lack of adequate fire detection systems in these markets can easily lead to large-scale fires upon ignition. Therefore, this study was conducted with the aim of detecting fires in traditional markets, utilizing thermal imaging cameras for data collection and the YOLOv8 model for object detection experiments. Data were collected in the night markets within traditional markets of xx city and by simulating fire scenarios. A comparative analysis of the Nano and XL models of YOLOv8 revealed that the XL model is more effective in detecting fires. The XL model not only demonstrated higher accuracy in correctly identifying flames but also tended to miss fewer fires compared to the Nano model. In the case of objects other than flames, the XL model showed superior performance over the Nano model. Taking all these factors into account, it is anticipated that with further data collection and improvement in model performance, a suitable fire detection system for traditional markets can be developed.

• Asia pacific journal of information systems
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• 제32권2호
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• pp.249-274
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• 2022

This study is to focuses on users' attitudes toward augmented reality games. Based on the Technology Acceptance Model (TAM) and Flow theory, continuous usage intention was set as a dependent variable, and immersion was set as a mediating variable. As independent variables, spatial presence, perceived interactivity, perceived pleasure, and sickness were set. Besides, this study strived to compare and analyze Korean and Chinese Data. The results of this study were as follows. First of all, Korean users significantly affected spatial presence, perceived pleasure, and immersion. Spatial presence and perceived pleasure had also mediated effects on continuous usage intention through immersion. However, perceived interactivity and sickness did not affect immersion and even no mediating effect to continuous usage intention. In the case of Chinese users, spatial presence, perceived interactivity, and perceived pleasure were grouped into one variable. This variable influenced immersion and also had mediated effect on continuous usage intention. However, sickness, like Korean users, did not affect the set path. This study had implications for analyzing user perspective using immersion, a significant variable in previous research. In addition, this study found similarities and characteristics through a comparative analysis between Korean and Chinese users indirectly.

• 비교교육연구
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• 제24권3호
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• pp.227-244
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• 2014

본 연구의 목적은 국내 대학의 국제화를 위해 국내외 우수 대학들의 학문 분야별 중점분야를 비교하여 현재 각 대학들이 중점을 두고 있는 연구분야의 차이를 인지하고 향후 국내 대학들이 더 관심을 갖고 시도해 볼 수 있는 새로운 연구분야(Research area)에 대한 방향을 제안하는 것이다. 본 연구의 분석대상은 인문사회계열의 언론(Communication & Media) 분야의 국내외 10개 대학과 이공학계열은 전기전자(Electrical Engineering) 분야의 국내외 10개 대학을 선정하였다. 분석 자료는 각 대학이 3년간(2009~2011) 발표한 논문을 바탕으로 추출하여 네트워크 분석방법을 통해 분석되었다. 추출된 데이터는 3번의 데이터 처리과정을 거쳐 정리되었으며 Ucinet, Gephi, Netdraw 프로그램을 통해 구현되었다. 분석결과 언론학 분야는 국내 대학의 경우 매우 전통적인 연구분야에 집중되어 있으며 해외 대학에 비해 새로운 연구분야가 매우 한정되어 있어 학제성이 낮다는 것을 알 수 있었다. 전기전자 분야는 국내외 대학 모두 전통적인 연구분야 이외에 새로운 연구분야를 다양하게 가지고 있었다. 하지만 국내 대학에서 나타나는 연구분야와 해외대학에서 나타나는 연구분야의 성격이 다르게 나타나 전기전자 분야에 대한 인식의 차이와 추후 국내 대학이 시도해 볼 수 있는 새로운 연구분야의 방향을 설정할 수 있었다.

• 한국산학기술학회논문지
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• 제18권9호
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• pp.101-112
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• 2017

본 연구는 다양한 모바일결제 서비스들을 대상으로 모바일결제 서비스의 유형과 연령에 따라 모바일결제 사용의도에 영향을 미치는 요인들을 비교 분석하였다. 연구 결과, 스마트폰 전용 페이 유형에서는 소비자 혁신성이 모바일결제 사용의도에 정(+)의 영향을 미치며, 온라인 페이 유형에서는 호환성과 이미지가 모바일결제 사용의도에 정(+)의 영향을 미치는 것으로 나타났다. 모바일 앱 카드 유형의 경우에는 모바일결제 사용의도에 영향을 미치는 요인이 없는 것으로 나타났다. 그리고 30대와 40대의 경우에는 소비자 혁신성, '모바일결제 서비스 외의 이전 서비스에 대한 신뢰' 및 호환성이 모바일결제 사용의도에 정(+)의 영향을 미쳤다. 50대와 60대의 소비자 그룹에서는 이미지가 모바일결제 사용의도에 정(+)의 영향을 미치며, 지각된 위험이 모바일결제 사용의도에 부(-)의 영향을 미치는 것으로 나타났다. 10대와 20대의 경우에는 모바일결제 사용의도에 유의한 영향을 미치는 요인이 없는 것으로 나타났다. 본 연구에서는 모바일결제 서비스의 유형과 연령에 따라 모바일결제 사용의도에 영향을 미치는 요인들을 처음으로 비교 분석하였다는데 연구의 의의가 있다. 모바일결제 서비스를 제공하는 기업들은 목표로 하는 소비자 그룹에 모바일결제 서비스의 사용을 촉진하기 위해서 연구의 결과를 활용하여 해당 그룹에 잘 맞는 전략을 사용해야 한다.