• Journal of the Korean Society of Radiology
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• v.9 no.5
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• pp.263-267
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• 2015

In this paper, a method was proposed for objective and scientific judgment on disease conditions that is currently relied on subjective judgment of ultrasound practitioners. In the proposed method, mean squared errors (MSE) in ultrasound images for follow-up of HCC patients were obtained and the Peak Signal to Noise Ratio(PSNR) of the ultrasound images was analyzed. According to the results of analysis, MSE and PSNR values changed over time. This is attributable to changes in ultrasound images resulting from increases in utrasonic echoes following the progression of HCC. The results of the present study can be used as a method for scientific and objective judgment in ultrasonic scan instead of current subjective judgment by practitioners.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.10
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• pp.509-519
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• 2016

This study intends to examine how the subjective health perception of drinkers influences the depression trajectory change by using longitudinal data for elderly drinkers. This study has set up a balanced panel by combining the results from "Aging study panel research" conducted in the year 2006 (1st), 2008 (2nd), 2010 (3rd), 2012 (4th). A total of 543 elderly drinkers, who have responded to each research have been selected as targets for the final analysis. In the analyses, descriptive statistics and Latent Growth Modeling were conducted to examine the causal relationship between the observed and latent variables. The results are as follows: First, it was found that there was a negative correlation-with statistical significance-between the initial value of subjective health perception and the initial status of depression symptom. Second, there was a positive correlation between the initial value of subjective health perception and the changes of depression symptom. This indicates that elderly drinkers with high health perception usually have high degree of depression change; however, this does not mean it was statistically significant. Third, there was a statistically significant correlation between subjective health perception change and depression symptom change. It was found that the depression change level would be low if the subjective health perception change level was high. Thus, we can assume that the depression symptoms of elderly drinker c would slow down if the subjective health perception level increases.

• 한국노년학
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• v.40 no.3
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• pp.459-475
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• 2020

This study examined the moderating effect self-rated health has on the association between grandparenting and depressive symptoms. The fourth wave (in 2012) of the Korean Longitudinal Study of Ageing (KLoSA) was used for the analyses (N=650). The Coarsened Exact Matching (CEM) method was applied in order to ensure randomness in the selection of grandparents who participated in grandparenting and those who did not. The dependent variable was depressive symptoms, the independent variable was grandparenting, and the moderating variable was self-rated health. Control variables were education level, age, household income, gender, marital status and life satisfaction. After matching data by CEM, weighted multiple regression was applied with STATA 13.0. Also, simple slope analysis and region of significance were performed to interpret the interaction terms. The results showed that self-rated health had a significant moderating effect. Specifically, for grandparents with high self-rated health, grandparenting was associated with a lower level of depressive symptoms. On the contrary, for grandparents with low self-rated health, there was no difference depending on whether they participated in raising grandchildren. Based on these results, we discussed the need for consideration of self-rated health for grandparents who participated in grandparenting.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1999.11a
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• pp.233-237
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• 1999

Aromatherapy는 향을 이용하여 생리적 및 심리적 효과를 나타내는 치료법이다. 향의 종류에 따라 여러 효과들이 나타나고 있는데 본 연구에서는 이완 유도향 제품을 개발하기 위해 자율신경계로부터의 신호인 Galvanic skin resistance(GSR), 피부온도, 심박수 등과 뇌파에서의 변화를 측정하여 이완의 정도를 측정하고자 하였다. 실험방법은 4 종류의 aromatherapy용으로 조제된 복합향(#2033, #2026, #11, #13)을 이용하고 피검자는 후각기능이 정상이며 물리적 및 심리적 stress가 없고, 음주, 담배를 3일전까지 경험이 없는 군을 택하였다. 향을 주는 시간은 1분으로 하였으며 순서에 의한 효과를 없애기 위해 4 종류를 random order에 의해 실시하였다. 대조군으로는 증류수를 이용하여 실험 전, 실험 중, 실험 후에서 각각 측정하였으며 또한 각성효과가 좋은 jasmine과 이완 효과를 보이는 lavender를 같은 protocol로 시행하여 이완의 효과를 비교하였다. 뇌파는 FFT분석에 따라 각 주파수 영역 즉 beta, alpha, theta, delta로 나누어 분석하였다. Jasmine과 lavender의 이완 효과에서는 GSR의 변화와 HRV의 변화를 보고한 바 있다(백,1998). 또한 심리불안 효과와 향 이미지 검사를 동시에 시행하여 주관적지표로 삼았다. 실험 결과에서는 이러한 4 종류의 향은 모두 GSR의 현저한 감소 효과를 보였으며, 심박수와 피부온도의 감소경향을 나타내었다. 자율신경계 반응에 따라 4 종류 향의 이완 효과의 순서를 결정할 수 있었다. 주관적 검사와의 상관관계도 잘 나타났으며 이미지는 이완 정도와 섬세하다 항목이 잘 반영되었다. 뇌파의 변화에서는 의미 있는 변화는 보이지 않았다. 결론적으로 relaxation 효과는 GSR를 비롯한 자율신경계지표에서 잘 반영되었다.^2$=.792가 되었다. 설명되는 누적분산값은 67.18%였다.주관적 평가의 결과와 객관적 평가 결과를 이용해 마직물의 태를 평가하는 산출식을 제시하였다. 태 평가치의 경우 16가지 특성치를 모두 넣는 방법과 stepwise 방법, 또 Kawabatark 사용한 순차적 군 회귀법의 세가지 방법의 회귀식 중 16가지 특성치를 모두 넣는 방법의 결정계수가 가장 높았다.tosterone농도는 107.7$\pm$12.0 pmol／l이었고, 남성의 타액내 농도는 274.2$\pm$22.1 pmol／l이었다. 이상의 결과로 보아 본 연구에서 정립된 EIA 방법은 RIA를 대신하여 소규모의 실험실에서도 활용할 수 있을 것으로 사려된다.또한 상실기 이후 배아에서 합성되며, 발생시기에 따라 그 영향이 다르고 팽창과 부화에 관여하는 것으로 사료된다. 더욱이, 조선의 ${\ulcorner}$구성교육${\lrcorner}$이 조선총독부의 관리하에서 실행되었다는 것을, 당시의 사범학교를 중심으로 한 교육조직을 기술한 문헌에 의해 규명시켰다.nd of letter design which represents -natural objects and was popular at the time of Yukjo Dynasty, and there are some documents of that period left both in Japan and Korea. "Hyojedo" in Korea is supposed to have been influenced by the letter design. Asite- is also considered to have been "Japanese Letter Jobcheso." Therefore, the purpose of this study is to look in

• Journal of Broadcast Engineering
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• v.14 no.2
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• pp.197-209
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• 2009

Stereoscopic video delivers depth perception to users contrary to 2D video. Therefore, we need to develop a new video quality assessment model for stereoscopic video. In this paper, we propose a new method for objective assessment of stereoscopic video. The proposed method detects blocking artifacts and degradation in edge regions such as in conventional video quality assessment model. And it detects video quality difference between views using depth information for efficient quality prediction. We performed subjective assessment of stereoscopic video to check the performance of the proposed method, and we confirmed that the proposed algorithm is superior to the existing method in PSNR in respect to correlation with results of the subjective assessment.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.346-349
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• 2015

Generally, in order to verify the degree of tire wear or abnormal wear, a driver or an auto mechanic checks the degree of tire wear and the existence of tire abnormality, directly with the naked eye or by way of using a gauge equipment. In case of such verification, individual subjective judgments may be involved or a driver may suffer heavy burdens to expend the time and cost for using the wheel alignment equipment. Therefore, this thesis will use a number of laser sensors to check the existence of abnormal wear and the degree of wear on each tire and develop a system checking the sides of tires to receive the tire information, so that subjective judgments may be overcome and objective and accurate judgments may be rendered.

• Journal of Biomedical Engineering Research
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• v.19 no.5
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• pp.539-546
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• 1998

The purpose of this study is to estimate human emotion quantitatively under colors and music stimuli and to examine the for correlation between color and music sensibility. Physiological signals(electroencephalogram, electrocardiogram, Galvanic skin conductivity and respiration rate) were measured to compare color with music sensibilities. The personality of the subject were investigated using factor analysis and semantic differential method of 20 items(7 interval scaled). The results showed that red, yellow and violets color provoked active and exciting senses mainly as dance, rock and blues music. While blue, cyan and pink colors ware involved in tranquil and resting emotions deeply as classic and ballade music.

• Proceedings of the Korea Contents Association Conference
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• 2012.05a
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• pp.327-328
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• 2012

본 연구의 목적은 TV드라마 출연 여성 아이돌스타의 스타 마케팅 기법과 이에 따른 수용자의 선호유형을 분석해 보는 것이다. 아이돌 스타의 TV방송 드라마 출연은 최근 유행처럼 빠르게 번지고 있다. 철저한 스타마케팅 차원에서 고려된 것이기는 하지만 남성아이돌 스타와 다르게 여성 아이돌 스타가 방송 드라마에서 차지하는 비중은 상대적으로 아직까지 매우 미약한 수준에 그치고 있다. 이는 드라마 소비계층의 차별적 요인도 있겠지만 전반적 여성 아이돌 스타에 대한 수용자들의 인식이 남성 아이돌과는 다른 방식으로 작용한다는 것을 의미하기도 하다. 따라서 본 연구는 남성 아이돌 스타와 차별화된 여성 스타에 대한 수용자 인식유형과 이에 따른 팬덤현상을 주관성 연구방법인 Q방법론을 중심으로 분석해 볼 것이다.

• The Journal of the Korea Contents Association
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• v.20 no.7
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• pp.576-584
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• 2020

The effect of conducted using Q research method, which is one of qualitative analysis methods that can approach in-depth and essential meaning of Spanish restaurant's perception of dining out consumers. The purpose of this study is to classify Spanish restaurant's perceptions of catering consumers by type, to find out the characteristics among them, and to suggest future improvement directions. An exploratory study was conducted using Q-methodology to analyze the subjective perceptions of restaurant customers in Spanish restaurants. To this end, the Q-sort, which consists of a statement card, a P-sample, and a classification process, was analyzed through Q factor analysis using the PC QUANL program. The results were classified into two types. Type 1 (N=10): Spanish restaurant preference, Type 2 (N=7): The name of the factor was set as the type of professionalism in Spanish restaurants. Each type was found to have different characteristics. Each subjective perception detected through this analysis can be used as basic data for various studies.

• 한국노년학
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• v.32 no.4
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• pp.1101-1118
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• 2012

The purpose of this study is to examine which factors determine self-rated health(SRH) among Korean elderly focusing on gender differences. To achieve this purpose, it uses the Hallym Longitudinal Study of Aging, wave 4 in 2009. Participants aged 65 and over from wave 4 were selected(N=986, male 407, female 579). From wave 4, all variables were selected except for respondents' education which was from wave1. In analyses, $x^2$ or t-test were conducted to examine whether independent variables significantly differ by SRH. Then, since a dependent variable consisted of two categories-being healthy or not being healthy, logistic regressions were run. What makes gender differences in the link of independent variables to SRH were 75-84 age group, education, and IADLs. For females, 75-84 age group rated their health as worse compared to 65-74 age group, but this age group did not have significant effect on SRH for males. Females graduating from junior high school were more likely to higher rate their health compared to their counterparts. However, education was not significant for males. Instrumental activities of daily living(IADLs) is one of variables affecting SRH by making gender differences. Female having problems with IADLs were more likely to be significantly negatively rate their health compared to males. Through focusing on age, education, IADLs making gender difference in evaluating health, governments needs to support males and females differently.