• Asia pacific journal of information systems
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• 제29권4호
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• pp.731-751
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• 2019

This study examined the impact of various product photo features on the attention of potential consumers in online apparel retailers' environment. Recently, the method of apparel's product photo representation in online shopping stores has been changed a lot from the classic product photos in the early days. In order to investigate if this shift is effective in attracting consumers' attention, we examined the related theory and verified its effect through laboratory experiments. In particular, experiment data was collected and analyzed using eye tracking technology. According to the results of this study, it was shown that the product photos with asymmetry are more attractive than symmetrical photos, well emphasized object within a photo more attractive than partially emphasized, smiling faces are more attractive for customer than emotionless and sad, and photos with uncentered models focus more consumer's attention than photos with model in the center. These results are expected to help design internet shopping stores to gaze more customers' attention.

• 대한환경공학회지
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• 제27권8호
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• pp.829-836
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• 2005

본 연구에서는 광화학적 산화처리에 의한 아트라진의 분해특성을 분해산물의 분석을 통하여 살펴보았다. 본 실험에서 나타난 주요 분해산물로는 OIET, OIAT, OAAT가 있었고, 이를 통하여 광산화 반응에 의한 아트라진의 주분해반응은 dechlorination과 hydroxylation임을 확인할 수 있었다. TOC의 분석 결과 광산화에 의한 아트라진의 무기화는 기대하기 어려운 것으로 판명되었으며, 염소 이온의 물질수지 분석을 통해 본 광산화 반응에 의해 아트라진의 염소기의 완전한 탈염소가 진행되었음을 알 수 있었다.

• 한국측량학회지
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• 제20권1호
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• pp.13-19
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• 2002

자동화 공정에 의한 항공사진이나 위성영상의 획득과는 달리 지상사진측량에 의한 영상 획득은 대상물의 요구정확도와 해석 범위에 따라 각기 다른 번거로운 수행 과정을 거쳐야 한다. 이에, 본 연구에서는 단사진의 활용성을 증대시키기 위해 무반사경 토털스테이션을 이용하여 지상 구조물인 문화재에 대한 수치표면모형 및 정사영상을 생성하였으며 입체영상을 이용한 방법과 비교 분석하였다. 입체 영상의 획득과 도화의 어려움을 배제하고 생성한 정사영상을 이용하여 다양한 기하학적, 시각적 분석을 수행하므로써 고정밀도를 요하지 않는 문화재의 도면 작성이나 사면의 안정성 검토 등을 위한 측정방법으로 단사진의 활용방안을 제시 하고자 한다.

• 한국정밀공학회지
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• 제13권12호
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• pp.30-37
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• 1996

On-line process control equipment for CO$_{2}$ laser cutting is not available for industrial applications. The major part of the industrial laser cutting machines are adjusted off-line by highly educated engineers. The quality inspection of the sample is visual and referred to different quality scales. Due to the lack of automation the potential laser users hesitate to implement the cutting method. The first step toward an automation of the process is the development of a process monitoring system and the research is cincentrated on the area of on-line quality monitoring during CO$_{2}$ laser cutting. The method is based on the detection of the emitted light from the cutting front by photo diode. The developed monitoring system consists of the OP Amplifier, A/D convertor, power supply and PC. The signal from the photo diode has been undertaken from Fourier analysis and statistical analysis with real time. The photograph of striation pattern was taken by metallurgical microscope. As a result, it is possible to predict the striation pattern according to the beam traveling speed.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1994년도 추계학술대회 논문집
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• pp.354-359
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• 1994

On-line process control equipment for CO $_{2}$ laser cutting is unavailable for industrial application. The major part of the industrial cutting machines are regulated off-line by highly educated engineers. The quality inspection of the sample is visual and referred to different quality scales. Due to lack of automation potential laser users hesitate to implement the cutting method. The first step toward an automation of the process is development of a process monitoring system and the research is concentrated on the area of on-line quality detection during CO $_{2}$ laser cutting. The method bases on the detection of the emitted light from the cut front by photo diode. the signal from photo diode has been undertaken from Fourier analysis and statistical analysis. As a result, it is possible to estimate striation pattern according to beam travel speed.

• 한국표면공학회지
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• 제25권3호
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• pp.126-132
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• 1992

Recent VLSI requires materials with high dielectric constant in order to reduce their storage capacitor areas. Thin TaOx film was formed from Ta(OCH3)5 by photo-CVD method at a low temperature. The result shows that the film obtained by photo-CVD method is this study has good step coverage, high dielectric constant (20-25) and low leakage current. The high strong peaks from Ta(4f), Ta(4d), and O(ls) levels were observed by XPS analysis. From the diffraction pattern and TEM prcture analysis, the TaOx thin film was observed to be amorphous. This kind of the deposition method could be considered to be a very promising method applied to VLSI.

• 대한화학회지
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• 제56권5호
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• pp.577-582
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• 2012

Quinine quantitative analysis, photo-bleaching, fluorescence quenching, and urine analysis have been performed by means of a UV-LED fluorometer, which can be easily built and used in a high-school laboratory. The quinine detection range is estimated to be 0.05-80 ppm, enough for many classroom luminescence experiments. The quinine content in commercial tonic water is determined from the calibration curve, and UV photo-bleaching of this anti-malarial drug is demonstrated with clear wavelength dependence. Halide quenching of quinine fluorescence is also observed and the increase in quenching efficiency in the order of $Cl^-$, $Br^-$, and $I^-$ is evident. Urine analyses for the student volunteers have been carried out and the results clearly reveal excretion of the ingested quinine. The student participants are exuberant throughout the course of this study and sense the practices resourceful.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.438-440
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• 2009

사람의 심박동은 심장 상태와 구조, 나이 등의 여러 요소에 의하여 고유한 특성을 갖고, 이러한 특성을 이용하여 개인 인증에 심박동을 적용할 수 있다. 본 논문에서는 기존의 심전도(ECG, electrocardiogram) 방법을 대신하여 빛을 이용한 광전용적맥파(PPG, Photo Plethysmogram)를 측정, 신호를 분석하였다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.348-348
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• 2016

Low dark current (off-current) and high photo current are both essential for a solution processed organic photodetector (OPD) to achieve high photo-responsivity. Currently, most OPDs utilize a bulk heterojunction (BHJ) photo-active layer that is prepared by the one-step deposition of a polymer:fullerene blend solution. However, the BHJ structure is the main cause of the high dark current in solution processed OPDs. It is revealed that the detectivity and spectral responsivity of the OPD can be improved by utilizing a photo-active layer consisting of an interdiffused polymer/fullerene bilayer (ID-BL). This ID-BL is prepared by the sequential solution deposition (SqD) of poly(3-hexylthiophene) (P3HT) and [6,6] phenyl C61 butyric acid methyl ester (PCBM) solutions. The ID-BL OPD is found to prevent undesirable electron injection from the hole collecting electrode to the ID-BL photo-active layer resulting in a reduced dark current in the ID-BL OPD. Based on dark current and external quantum efficiency (EQE) analysis, the detectivity of the ID-BL OPD is determined to be $7.60{\times}1011$ Jones at 620 nm. This value is 3.4 times higher than that of BHJ OPDs. Furthermore, compared to BHJ OPDs, the ID-BL OPD exhibited a more consistent spectral response in the range of 400 - 660 nm.

• 한국측량학회지
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• 제13권1호
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• pp.95-106
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• 1995

본연구의 목적은 근거리사진측량기법을 이용하여 비측량용사진의 정확도 해석이다. 비측량용사진을 이용한 근거리사진측량은 경제성이 높고, 취급하기가 용이한 것으로 알려져 있으나 사진의 정확도에 대한 연구는 미흡한 실정이다. 이러한 사진의 정확도를 연구하기 위하여 우선 지형모델을 설정하고, 측량용카메라와 비측량용카메라를 이용하여 설정된 모델을 촬영하여 비교·연구였다 해석방법은 Bundle조정법과 직접선형변환법으로 해석하여 Bundle조정법이 비측량용 사진의 해석에도 양호하다는 결과를 얻었다. 그러므로 비측량용사진의 정확도 분석에는 Bundle조정법을 사용하여 해석하였으며, 비측량용사진도 정확도가 양호하여 실용성이 큰 것으로 나타났다.