• 수면정신생리
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• 제25권1호
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• pp.21-26
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• 2018

목 적 : 본 연구의 목적은 한국인에게 적합한 사회적 정서를 유발하는 자극(한국형 사회적 정서 유발 시각 자극, Korean Social Affective Visual Stimuli, K-SAVS)을 개발하는 것이다. 방 법 : K-SAVS는 극동 아시아인이 등장하는 사회적 상황의 사진들로 구성되었다. 각 사진은 부정적 정서 자극, 긍정적 정서 자극, 혹은 중립 자극으로 구성하였다. 24명의 피험자에게 긍정적 자극과 부정적 자극을 보여주고 정서가 및 각성수준에 대한 자가 평가 마네킹 척도를 작성하게 한 후, 다른 24명의 피험자들에게 부정적 자극과 중립 자극을 보여주고 같은 척도를 작성하게 하였다. 결 과 : 1차 실험에서 95개의 자극 사진 중 긍정적 정서자극 사진 1개 세트, 부정적 정서 자극 사진 2개 세트를 선정하였다. 각 세트는 18개의 사진으로 이루어졌다. 긍정적 정서 자극은 부정적 정사 자극 사진에 비해 호감도는 높았으며 (p < 0.001) 흥분도는 낮았다(p < 0.001). 2차 실험에서는 1차 선정된 사진들과 중립 자극 사진을 포함하여 79개의 사진 중 중립 자극 사진 1개 세트를 선정하였다. 중립 자극은 호감도는 높았으며(p < 0.001) 흥분도는 낮았다(p < 0.001). 결 론 : K-SAVS는 한국인에게 특정한 사회적 정서를 유발하는데 유용하게 사용할 수 있는 시각 자극이라 할 수 있다.

• 대한수학회보
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• 제58권5호
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• pp.1301-1314
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• 2021

In this paper, firstly, we work on the presentation of the crossed product of groups of general types. After that we find the generating pictures (Second Homotopy Group) of this product by looking the relations from a geometric viewpoint. Finally, we give some applications.

• Journal of Positioning, Navigation, and Timing
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• 제9권2호
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• pp.131-138
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• 2020

In this paper, we analyze the delay phenomenon that can occur when controlling an unmanned aerial vehicle using a camera and describe a solution to solve the phenomenon. The group of pictures (GOP) value is changed in order to reduce the delay according to the frame data size that can occur in the moving image data transmission. The appropriate GOP values were determined through experimental data accumulation and validated through camera self-test, system integration laboratory (SIL) verification test and system integration test.

• 약학회지
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• 제32권2호
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• pp.117-124
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• 1988

The study was carried out to determine the effects of long term dietary administration of vitamin A and ethanol on the changes of liver lipids in rats. Sixty rats were devided into 4 groups; $200{\mu}g$ vitamin A (group 1), $200{\mu}g$ vitamin A with ethanol (group 2), $2,000{\mu}g$ vitamin A (group 3), $2,000{\mu}g$ vitamin A with ethanol (group 4). Generally the contents of vitamin A in the liver were decreased in the group 4 as compared with the group 3. The contents of the liver vitamin A in the group 3 were increased linearly in accordance with duration of the vitamin A administration, however, the degree of accumulation of vitamin A in the group 4 showed lower than those in the group 3. The contents of total cholesterol in the liver of the group 3 were rather higher than those in the group 4. The contents of triglyceride in the liver of the group 3 were lower than those of the group 4. Histological pictures in the group 1 and 2 showed nonspecific during 3 times (8 weeks, 16 weeks, 24 weeks) experiment. Pictures of fatty liver were found after 8 weeks in the group 3 and the degree of fatty accumulation showed increased with time.

• 한국과학교육학회지
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• 제26권1호
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• pp.9-15
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• 2006

학생들은 화학에서 입자 개념의 중요성에도 불구하고 이를 어려워한다. 이에 여러 연구자들이 이 개념에 대한 효과적인 교수 방법을 제안하였으나, 체계적인 연구는 거의 이루어지지 않았다. 따라서 이 연구에서는 학생들이 입자 개념을 학습할 때 그림 그리기와 그림 분석하기 방법을 도입한 수업의 효과를 조사하였다. 서울시 남녀 공학 중학교 1학년 세 학급을 통제 집단과 그림 그리기 집단, 그림 분석하기 집단으로 선정하여 물질의 세 가지 상태와 분자의 운동 단원에 대하여 총 8차시 동안 수업을 실시하였다. 학생들의 시각적 학습양식에 따라 개념 이해도, 학업 성취도, 과학 학습 동기에 대한 교수 방법의 효과를 조사하였다. 연구 결과, 그리기 집단과 그림 분석하기 집단의 개념 이해도, 과학 학습 동기 점수가 통제 집단에 비해 높았다. 또한 시각적 학습양식 선호 학생들의 과학학습 동기 점수가 비선호 학생들보다 높았다.

• 대한간호학회지
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• 제49권3호
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• pp.254-262
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• 2019

Purpose: This study aimed to explore the environmental factors affecting childhood obesity using photovoice from the perspectives of students, parents, and teachers in the community. Methods: Six school students, seven parents, and seven school teachers completed an assignment requiring them to take 24 pictures and participate in group discussions. After training session, the participants were asked to take pictures associated with food and physical activity environments related to childhood obesity at home, school, and within their communities for two weeks and to submit the pictures with records. Each group had four sessions for discussion. Results: School cafeteria, convenience stores near schools, instant food and fast food joints, food delivery, and high-calorie snacks comprised the food environmental factors. Lack of physical activity classes at school, commuting by car, barriers to physical activity, and use of smart-phone were environmental factors that inhibited physical activity. Conclusion: To reduce childhood obesity, the creation of a supportive environment for encouraging the consumption of healthy foods and enhancing physical activity should be considered. Modifications of and improvement to the obesogenic environment might be a good strategy to prevent and reduce childhood obesity.

• 아동학회지
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• 제27권1호
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• pp.113-124
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• 2006

Korean children reading Hangul was studied in children between 2 and 5 years of age. Subjects were 400 young children in each age group from kindergartens or day care centers in 6 cities of Jeon-buk Province. Teachers used a checklist based on Lee, Cha-Suk(2003) to assess children's reading ability. Data were analyzed by frequency, percentage, and $x^2$ using SPSS 10.0 program. Results showed age differences in young children's reading of Hangul. Developmental levels consisted of looking at pictures because of absence of linguistic awareness about words, skipping pages of text without pictures, pronouncing phonemes, being aware of phonemes and of the difference between pictures and print, and knowing that the same phonemes can be applied to different words.

• 대한산업공학회지
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• 제23권1호
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• pp.235-247
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• 1997

In this study, the performance of ATM multiplexer with MPEG(Motion Pictures Experts Group) video is analyzed by considering the effect of the MPEG GOP(Group of Pictures) structure. By assuming that frame starting times are synchronized, aggregated traffics are considered to be transmitted at the beginning of each frame time units. The aggregated number of cells generated during a frame time unit is, therefore, derived from distributions of individual sources. The stationary probability of buffer occupancy can be easily obtained by using a property of the periodicity of aggregated traffics. Simulation approach is also used to determine the traffic load for a given probability of satisfying QoS(Quality of Service).

• 대한가정학회지
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• 제26권1호
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• pp.97-108
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• 1988

The purpose of this study is to classify the type of the Korean document chest, mungab through the literature and market survey and to investigate the preference on characteristics of the mungab. It also attempts to find out the aesthetic perception of the type of mungab by using semantic differential scales. A pilot study was conducted to select the types and pictures of the mungab. Three types and six pictures of mungab were selected. Six hundred homemakers of middle and upper class residing in seoul area were selected for the survey and 449 among them were used for data analysis. Data were analyzed using the SPSS program. The major findings are as follows: 1) The esult of pilot test, the presentative characteristics of mungab were classified into naive type, unique type, and elaborate type. 2) it was found that the modernized style of traditional mungab was wood grain and the next one was Najonchiligi. In the characteristics of decoration which was symbolic pattern, Shi-Jang-Saeng was predominant. In wanting style when they buy, the modernized style of traditional Korean chest was predominant, too. 3) Young and low income group preferred modern style using transparent paint and Sa-Goon-Ja, letters in the symbolic patterns of decoration. Old and high income group preferred traditional style using splendid and expensive materials and Ship Jang Saeng in the symbolic decoration. 4) compared with types of mungab in aesthetic perception, modern style of the traditional mungab was evaluated more positively than traditional style. The young and low income group perceived the naive type and unique type positively, but the old and high income group perceived the elaborate type the most positively.

• 한국생활과학회지
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• 제23권5호
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• pp.807-823
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• 2014

The purpose of this study is to verify the effects of storytelling-centered arts educational activities based on the famous painting appreciation on young children's appreciation ability of pictures and creativity. The study was conducted with a total of 50 5-year-old young children in two classes of B Day Care Center in the city of J, Jeollabukdo. The children were randomly divided into an experimental group(25) and a control group(25). The storytelling-centered arts educational activities based on the famous painting appreciation was conducted for the experimental group for 12 weeks from April 29, 2013 to July 19, 2013. The activities were composed of 3 steps of 'appreciation-expression-exhibition & assessment' on the basis of 2-week basic units. The appreciation activities were composed basing upon the types of the famous painting appreciation and storytelling, and expression and exhibition & assessment activities were composed of 4 areas of arts(music/movement/language/art). The results of the study are as follows. First, the storytelling-centered arts educational activities based on the famous painting appreciation generally improved young children's painting appreciation abilities in all sub-areas(observation and description/artist's intention of subject expression/mood of a work/material and technique/artistic factors/attitude to the work). Second, the storytelling-centered arts educational activities based on the famous painting appreciation generally improved young children's creativities in all sub-areas(originality/fluency/flexibility/imagination).