• 패션비즈니스
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• 제22권3호
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• pp.16-29
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• 2018

The present study examines whether consumers' perception of waiting time and their behavioral intentions are influenced by the presence of background music in an online shopping environment. In particular, this study aims to explain the underlying mechanism for the effects of background music on consumers' perceived wait and behavioral intentions toward the online retailer by proposing the mediating role of emotions drawing on the Stimulus-Organism-Response (S-O-R) framework. A lab experiment was employed to test the hypotheses. A total of 102 college students were used for data analyses. Results show that the presence of music has a significant impact on participants' emotions, perceived waiting time, and approach behavior. Moreover, the findings show that pleasure and the perceived waiting time serve as mediators in the relationship between the presence of music and approach behavior. Implications of the model for theory, practice, and further research are discussed.

• 한국지능시스템학회논문지
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• 제23권2호
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• pp.139-143
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• 2013

기존의 영상 이진화에 대한 알고리즘의 기본 아이디어는 영상이 회색 수준의 차이에 의하여 물체와 배경으로 구분된다는 가정에서 이루어지고 있다. 본 논문에서는 이러한 가정을 확장하여 영상은 물체와 배경뿐만 아니라 하나를 더 추가하여 그 테두리로 이루어진다고 가정하고 테두리 검출에 기반한 이진화 기법을 제안한다. 제안한 방법의 타당성을 보이기 위하여 6개의 잘 알려진 영상에 대하여 모의실험을 수행하고, 그 결과로부터 기존의 방법들과의 성능을 비교 검토한다.

• 소프트웨어공학소사이어티 논문지
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• 제29권1호
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• pp.13-21
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• 2020

CNN 모델이 이미지 분류와 객체 탐지 등 여러 분야에 활용됨에 따라, 자율주행자동차와 같이 안전필수시스템에 사용되는 CNN 모델의 성능은 신뢰할 수 있어야 한다. 이에 CNN 모델이 다양한 환경에서도 성능을 유지하는지 평가하기 위해 배경을 변경한 이미지를 생성하는 이미지 데이터 증강 도구를 개발한다. 이미지 데이터 증강 도구에 객체가 존재하는 이미지를 입력하면, 해당 이미지로부터 객체 이미지를 추출한 후 수집한 배경 이미지 내에 객체 이미지를 합성하여 새로운 이미지를 생성한다. CNN 모델 성능 평가 방법으로 개발한 도구를 사용하여 기존 테스트 이미지로부터 새로운 테스트 이미지를 생성하고, 생성한 새로운 테스트 이미지로 CNN 모델을 평가한다. 사례 연구로 Pascal VOC2007 테스트 데이터로부터 새로운 테스트 이미지를 생성하고, 새로운 테스트 이미지로 YOLOv3 모델을 평가하였다. 그 결과 기존 테스트 이미지의 mAP 보다 새로운 테스트 이미지의 mAP가 약 0.11 더 낮아지는 것을 확인하였다.

• 대한방사선기술학회지:방사선기술과학
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• 제4권1호
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• pp.55-62
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• 1981

This study was conducted, during the period of 20-30th, July in 1981, to survey measurement methods in thyroid uptake rate test in Seoul city. The results were summarized as follows: 1. For the great part of nuclear medcine department, a mount of radioiodine($^{131}I$) administrated to the patients was $50-100{\mu}Ci$ in thyroid uptake rate test. 2. Distribution of scintillation, counter with crystal size of $1\frac{1}{2}inch$ was 43%, 3inch(22%), 2.5inch(14%) and $2\frac{1}{2}inch$ was 7% in RAI uptake rate test. 3. When RAI uptake rate test was performed, distribution of collimator in use was flat field type collimator(78%) in general and cylindrical type collimator was 22%. 4. High voltage applied to the P-M tube was $900{\sim}1000V$(50%) and most units provided $3{\sim}15%$ of the window range for the $^{131}I$ peak $\gamma-ray$ energy. 5. Distribution on the use of neck phantom for measurements standard solution was 57% and distribution of b filter in use for room background counts and extrathyroidal tissue was 43% and 50%. 6. The distance between the counter and the source was 25cm(58%) in measuring radioactivity of standard solution, thyroid tissue and background radioactivity count. 7. The early uptake measurements(2, 4, 6 hours) are done after administration of the radioiodine dose and also 24-hour and 48-hour uptake measurements are done in routine test.

• Nuclear Engineering and Technology
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• 제38권7호
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• pp.639-656
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• 2006

In order to apply the leak before break (LBB) concept to nuclear piping systems, the dynamic strain aging effect of low carbon steel materials has to be taken into account, in compliance with the requirements of the Korean Standard Review Guide (KSRG) 3.6.3-1. For this goal, J-R tests are needed for a range of various temperatures and loading rates, including dynamic loading conditions. In the dynamic loading J-R test, the unloading compliance method can not be applied to measure the crack growth and direct current potential drop (DCPD) method; this method also has a problem defining the crack initiation point. The normalization method is known as a very useful method to determine the J-R curve under dynamic loading because it does not need additional equipment or complicated loading sequences such as electric current or unloading. This method was accepted by the American Society for Testing and Materials (ASTM) as a standard test method E1820 A15 in 2001. However, it has not yet been clearly verified yet if the normalization method is sufficiently reliable to be applied to LBB. In this study, the basic background of the J-integral, LBB and dynamic loading J-R test are explained, and the current status for dynamic loading J-R test methods are reviewed from the view point of LBB for nuclear piping. In particular, the theoretical and historical background of the normalization method which has received attention recently, is summarized. Recent studies for this method are introduced and future works are suggested that may improve the reliability of LBB for nuclear piping.

• 보건교육건강증진학회지
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• 제10권1호
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• pp.72-86
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• 1993

The purpose of this study is to find out the menopausal symptom of middle-aged women and their self-care on it. This study also intended to awaken the relationship of the menopausal symptom and self-care and to provide basic data on the health education of middle-aged women. For this purpose, the study (1) identified respondents background variables, (2) found menopausal symptom and the state of self-care, (3) analyzed relationship between general character, menopausal symptom, and self-care, (4) analyzed the relationship of menopausal symptom and self-care for 543 random sampled women in City of Incheon. The questionnaire consisted of 25 questions on the menopausal symptom interview by Neugarton translated by Jung Hae Ran(1985) and questions of the self-care inventory by Orem reconstructed by Sung Moon Hee(1988). The data were analyzed by using frequency, percentage, t-test, X²-test, pearson's correlation coefficient with SPSS statistical package. The results of this study could be summed up as follows ; 1. The Degree of menopausal symptom were graded from 25 to 75. (x 40.85, s. d. 8. 6.) 2. The test of relationship between the individual background and the menopausal symptom revealed that there seemed to be statistically significant correlation between the sexual life, life-content, the level of education, menstruation(p<0.000). 3. In the test of relationship between the individual background and the self-care process, (1) in case of insight of symptom, there seemed to be statistically significant correlation between the self-content(r=0.1463), sexual life(r= -0.1376), menstruation(r=0.1561), and artificial abortion(r=0.1577), (p<0.001), (2) In case of self-health control, there seemed to be statistical correlation between the states of menstruation and the number of induced abortion. (3) In case of self-health decision, there seemed to be statistically significant correlation between the number of visiting hospitals or clinics and the level of education(r=0.106), the self-content(r=0.1235), induced abortion(r=0.1343) (p<0.0000). And also individual background can show the 40.21 percent of self-health maintenance. 4. The relationship between menopausal symptom and self-care has a significant meaning to the insight of symptom, self-health decision according to the groups of menopausal symptom(p<0.000), but it doesn't have any meaning to self-health control. And self-health maintenance can manifest the 19.88 percent of menopausal symptom.

• 음성과학
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• 제3권
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• pp.26-37
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• 1998

The Connected Speech Test (CST) was developed to test hearing aid performance using realistic stimuli (Connected speech) presented in a background of noise with a visible speaker. The CST has not been investigated as a measure of speech reading ability using the visual portion of the CST only. Thirty subjects were administered the 48 test lists of the CST using visual presentation mode only. Statistically significant differences were found between the 48 test lists and between the 12 passages of the CST (48 passages divided into 12 groups of 4 lists which were averaged.). No significant differences were found between male and female subjects; however, in all but one case, females scored better than males. No significant differences were found between students in communication disorders and students in other departments. Intra- and inter-subject variability across test lists and passages was high. Suggestions for further research include changing the scoring of the CST to be more contextually based and changing the speaker for the CST.

• Journal of Biosystems Engineering
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• 제40권3호
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• pp.277-283
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• 2015

Background: Foodborne disease outbreaks from various food sources are a major health concern worldwide. Current methods for detection of foodborne pathogens are both expensive and time-consuming. Purpose: This review aims to present the current information available on the use of lateral flow test strips to detect pathogens in food products to enhance food safety. Results: Frequent foodborne disease outbreaks from various food sources have increased the need for rapid and easy methods for routine analysis of foodborne pathogens. Present detection methods for foodborne pathogens require expensive instruments, experts, and long time for sample analysis. Lateral flow test strips have drawn attention in recent years because of their ability to detect analytes quickly and easily. This review focuses on the principle of the lateral flow test, the various formats of lateral flow test strips, recognition elements, labeling tags, and reading instruments. In addition, this review also discusses the future prospects for the lateral flow test strips.

• 한국통신학회논문지
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• 제39C권10호
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• pp.909-919
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• 2014

License plate (LP) detection is the most imperative part of an automatic LP recognition (LPR) system. Typical LPR contains two steps, namely LP detection (LPD) and character recognition. In this paper, we propose an efficient Vehicle-to-LP detection framework which combines with an adaptive GMM (Gaussian Mixture Model) and a cascade of boosted classifiers to make a faster vehicle LP detector. To develop a background model by using a GMM is possible in the circumstance of a fixed camera and extracts the motions using background subtraction. Firstly, an adaptive GMM is used to find the region of interest (ROI) on which motion detectors are running to detect the vehicle area as blobs ROIs. Secondly, a cascade of boosted classifiers is executed on the blobs ROIs to detect a LP. The experimental results on our test video with the resolution of $720{\times}576$ show that the LPD rate of the proposed system is 99.14% and the average computational time is approximately 42ms.

• KIEAE Journal
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• 제12권4호
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• pp.83-88
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• 2012

As for the generally preferred sound sources used in the test, the sound of water and the birds chirping were highly valued. And they have found that preference of the subject is increased if background music which mixed well with the sound sources were provided together. On the other hand, the sound sources of low satisfaction were judged at be church bells, bell of Emile, and fulling cloth, which not mix well with interior landscaping. If the physical elements of interior landscaping were equally composed, it has found that the larger were a of water space is, the higher satisfaction more than other sound sources. Average satisfaction of background sound in interior landscaping classified according to the characteristics of space has found that satisfaction of the birds chirping and music in working space and satisfaction of water sound and music in commercial space were high. Women judged that satisfaction of the birds chirping and music in working space and satisfaction of water sound and music in commercial space whose values were the same with the average ones were high, while men judged that satisfaction of the song of birds and music in working and commercial space is high.