• Journal of the Korea Society of Computer and Information
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• v.14 no.5
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• pp.11-17
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• 2009

It's a trend that the proportion of using an internet messenger among on-line communication methods is getting increased. However, there are not many applications which efficiently utilize these messenger communication data. Messenger communication data have specific characteristics that reflect the user's linguistic habits. The linguistic habits are revealed through frequently used words and emoticons, and user's emotions can be grasped by these. This paper proposes the method that efficiently classifies the emotions of a messenger user using frequently used words or symbols. The emotion classifier from repeated experiments achieves high accuracy of more than 95%.

• Journal of Nutrition and Health
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• v.46 no.3
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• pp.261-275
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• 2013

This study was designed to investigate the relationships of depressed mood with obesity, blood and urinary compositions, and dietary habits in Koreans at the age of 40, a critical transition to the middle adulthood stage. A total of 27,684 people who have taken the Life Transition Period Health Examination at the Korea Association of Health Promotion in 2011 were divided into two groups; the depressed mood group (DG) and the non-depressed group (NG) according to results of the primary questionnaire for mental health. The results were analyzed using the health examination criteria of the National Health Insurance Corporation. Women and medicaid recipients showed higher incidence of depressed mood than men and health insurance subscribers. People with underweight in BMI or abdominal obesity showed correlation with depressed mood, while there was no significant relationship with metabolic syndrome. Regarding blood and urinary compositions, DG was related to a higher level of hemoglobin and lower levels of HDL-cholesterol and triglyceride, although the relationships diminished after adjustment for other confounder effects. According to dietary habits, more people in DG were categorized as a group for "Needs Much Improvement", and the odds ratio of the depressed mood showed a significant increase. Significant difference regarding the frequency of food items such as milk products, animal proteins, Kimchi, and fruits was observed between DG and NG. In addition, a higher portion of subjects in DG did not consume regular meals and various kinds of food. In conclusion, the depressed mood of 40 year-old adults was significantly related to underweight, higher waist measurement, and undesirable dietary habits. Results of our study can be applicable as a basic resource for development of effective nutrition counseling and education programs for improvement of mental health promotion during the critical transition to the middle adulthood stage.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.5
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• pp.772-783
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• 2014

This study aimed to investigate the relationships between depressed mood and life style patterns, including smoking, alcohol drinking, and physical inactivity in Koreans aged 40 years, which is a critical life transition period. Based on the Life Transition Period Health Examination at the Korea Association of Health Promotion conducted in 2011 (n=27,684), participants were categorized into a depressed mood group and a non-depressed mood group based on the results of the Primary Mental Health Questionnaire. The depressed mood group showed higher tendency for smoking compared to the non-depressed mood group. Current and ex-smokers were about twice as likely to have a depressed mood as the non-smokers. The prevalence of nicotine dependency was significantly higher in the depressed mood group. The number of days and amount of alcohol consumption were significantly correlated with depressed mood. The prevalence of alcohol dependence and alcohol abuse was higher in the depressed mood group than in the non-depressed mood group. The frequency of high-intensity exercise per week was negatively correlated with the number of people with a depressed mood. This study showed the significant relationships between depressed mood and smoking, alcohol drinking, and physical activity in adults during an important life transition period. This implies that the development of proper lifestyle intervention or education may be needed to prevent depressed moods in this age group.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2001.12a
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• pp.341-344
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• 2001

20세기 후반 인터넷의 발전을 기반으로 전자메일은 현재의 대표적인 개인간 정보전달 수단으로 자리 잡게 되었다. 그러나 전자메일 사용자들은 인터넷상에 개인 전자메일 주소가 노출되므로 해서 많은 정크메일(junkmail)을 수신하게 되었는데, 정크메일이란 기업의 광고 선전물과 같이 수신을 원하지 않는 전자메일을 의미한다. 이러한 정크메일의 증가에 따라 정크메일을 분류하는 수단이 필요하게 되었는데, 현재까지는 사용자가 입력한 송신자의 전자메일 주소 또는 도메인 주소를 등록하여 차단하거나 제목에 특정 단어를 포함한 메일을 완전히 삭제하여 버리는 기술수준에 머무르고 있다. 본 논문에서는 퍼지 관계 곱을 기반으로 메일의 내용에 의미적으로 접근하여 정크메일을 분류하는 시스템을 제안한다. 이는 퍼지 관계곱 연산을 이용하여 미리 정의한 정크용어들과 사용자에게 수신되는 전자메일 내의 용어들간 의미적 포함관계를 분석하고 그를 통해 전자메일의 정크도(degree of junk)를 추출한다. 각 전자메일별로 추출된 정크도는 사용자가 부여하는 정크 기준치(SVJ, Standard Value of Junk)를 기분으로 정크메일과 비 정크메일로 분류한다. 제안된 기법은 사용자가 특정 개수의 동일한 전자메일에 대해 느끼는 정크도를 기준으로 분류한 정크메일 수를 비교하여 그 효용성을 증명하였다.

• Annual Conference on Human and Language Technology
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• 2011.10a
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• pp.102-106
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• 2011

본 논문에서는 사전 원어정보를 이용한 기존 방법에 나이브 베이즈 분류기를 추가로 이용하는 의미제약 기술에 대하여 소개한다. 의미제약은 의미 분석의 전처리 단계로서 부분적으로 중의성을 해소하여 입력된 복합명사의 분석 정확도 뿐만 아니라 전체적인 분석시간의 단축에도 큰 도움을 준다. 나이브 베이즈 분류기를 이용하는 방법은 사전의 의존성으로 인해 제약할 수 없는 2-gram을 대상으로 제약을 시도한다. 분류기를 위한 학습데이터는 의미 태깅된 기분석 2-gram사전을 이용하여 U-WIN의 관계정보와 사전 그리고 패턴들에 의해 생성된다. 원어정보로 해결하지 못하는 34.63%의 2-gram중 2.83%에 대해 추가로 제약에 성공 하였다.

• Journal of the Korea Fashion and Costume Design Association
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• v.8 no.1
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• pp.145-154
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• 2006

본 연구는 미국 쇼핑몰 내에서의 소비자행동에 관한 것으로, 인구통계학적 변수와 소핑가치 및 쇼핑의도와의 관계를 모델검증을 통하여 밝혔다. 우선 쇼핑가치와 쇼핑의도 하위차원의 구조를 살펴보면, 소비자가 인지한 쇼핑가치를 쾌락적 쇼핑가치와 실용적 쇼핑 가치로 구분하였다. 또한 기존연구와는 달리 쇼핑의도 변수에 있어서는 다차원적인 구조의 접근을 시도하여 쇼핑의도의 차원을 경제적, 외식, 기분전환, 서비스 이용 의도로 분류한 모델을 제시하였다. 인구통계학적 변수는 소비자가 인지한 쇼핑가치에 영향을 미치고 쇼핑가치는 소비자의 쇼핑의도에 영향을 미치는 인과적인 모델을 검증해본 결과를 살펴보면, 다음과 같다. 제시된 쇼핑가치 및 쇼핑의도의 차원은 통계적으로 유의하였으며, 인종 및 성별의 인구통계학적 변수는 쇼핑가치에 영향을 미치고 쇼핑가치는 쇼핑의도에 영향을 미치는 모델의 구조 또한 유의한 것으로 나타났다. 실용적 쇼핑 가치의 인지에 있어서 백인과 흑인간의 차이는 없었으나, 쾌락적 쇼핑 가치에서는 차이를 보여 흑인이 백인보다 쾌락적 쇼핑가치를 더욱 느낀 것으로 나타났다. 성별의 차이에서는 쾌락적 쇼핑가치뿐 아니라 실용적 쇼핑가치에서도 여성이 남성보다 더 큰 반응을 보였다. 또한 쾌락적 및 실용적 쇼핑가치 모두 쇼핑의도의 전체 차원들과 정적인 관계가 있는 결과를 보여, 실용적 쾌락적 쇼핑가치를 더욱 인지하면 할수록 경제적, 외식, 기분전환, 서비스 이용의 쇼핑의도 모두 높은 것으로 나타났다.

• Journal of agricultural medicine and community health
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• v.36 no.3
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• pp.167-178
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• 2011

Purpose: This study was done to identify the effects of a health diary program on fall related outcomes the low-income elderly women. Methods: The study was carried out with a nonequivalent control group with pretest-posttest design. The study was composed of two groups, each made up of 24 subjects: experimental group and control group. The subjects were low-income women aged over 65 years with osteoarthritis and both the experimental and control groups were made up of subjects with the same age profiles. The independent variable was the health diary program, and the dependent variables were fall related outcomes (fear of falling, fall-efficacy, knowledge of fall) difficulty of performing activity, and mood state. The health diary program was performed for 50 minutes each session and twice a week for 8 weeks. Data were collected before the health diary program 10 weeks after the beginning of the program. Results: The experimental group showed significant differences in knowledge of fall, fear of falling, and mood state compared to the control group. However there was no significant differences in difficulty of performing activity and fall efficacy. Conclusion: The results of this study may be used as part of an education to prevent falls for low-income elderly women with osteoarthritis.

• Journal of IKEEE
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• v.13 no.2
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• pp.159-166
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• 2009

So far, many researches have been done to retrieve music information using static classification descriptors such as genre and mood. Since static classification descriptors are based on diverse content-based musical features, they are effective in retrieving similar music in terms of such features. However, human emotion or mood transition triggered by music enables more effective and sophisticated query in music retrieval. So far, few works have been done to evaluate the effect of human mood transition by music. Using formal representation of such mood transitions, we can provide personalized service more effectively in the new applications such as music recommendation. In this paper, we first propose our Emotion State Transition Model (ESTM) for describing human mood transition by music and then describe a music classification and recommendation scheme based on the ESTM. In the experiment, diverse content-based features were extracted from music clips, dimensionally reduced by NMF (Non-negative Matrix Factorization, and classified by SVM (Support Vector Machine). In the performance analysis, we achieved average accuracy 67.54% and maximum accuracy 87.78%.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.16 no.1
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• pp.106-116
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• 2005

Summary : This study was designed to identify the difference in temperament, parent-adolescent's goodness of fit and behavioral problems between early-adolescent high risk group which can be divided into subgroups (ADHD-I and ADHD-HI/C) and normal group. Method : Subjects of this study were students of a Boy's Middle School and their parents. ADHD high risk group was determined by using three rating scales of ADHD behavioral symptoms : 1. Korean-ADHD Rating Scale, 2. Abbreviated Conners Parents Rating Scale, 3. Conners-Wells' Adolescent Self-Report Scale. Final research was based on the subjects including 25 people in ADHD-I high risk group, 70 ADHD-HI/C high risk group, 70 in normal group. Revised Dimensions of Temperament (DOTS-R) was used for students to assess their temperament, while DOTS-R : Ethnology for parents to access environmental demands. Goodness of fit between parent and adolescent was figured out by results of the two scales. Korean Youth Self Report (K-YSR) was used to examine behavioral problems. Results : When it comes to temperament of adolescents, ADHD-HI/C high risk group was found to be associated with higher scores on general activity level. In contextual parent demand to adolescent, ADHD-HI/C parents showed higher level of demands in general activity than other groups, and lower expectation of positive mood than ADHD-I parents. In parent-adolescent's goodness/poorness of fit, the research found out that ADHD-I and ADHD-HI/C had lower level of fit on pesitive/negative mood than normal group and indicated that ADHD behavioral symptoms connected with poorness of fit in emotional relationship between adolescents and their parents. In behavioral problems, ADHD-HI/C high risk group had severe externalizing and internalizing problems distinctly. It had more severe in externalizing problems than ADHD-I, while there were no differences in internalizing problems between the two subgroups. Conclusion The two ADHD subgroups in high risk adolescents had differences on temperamental activity level and on goodness of fit about positive mood. In addition, they had different patterns in externalizing/internalizing problems.

• The Journal of Engineering Geology
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• v.17 no.1 s.50
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• pp.27-40
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• 2007

Stratigraphy has been renewedly set up and the evolution of tectonic events related to basin formation has been exam-ined on the basis of fault-slip data analysis in the Tertiary Eoil and Waeup basins of the southeastern part of Korea. First of all, field mapping was carried out in detail for Tertiary formations and then paleostress analysis were peformed with more than 400 fault slip data collected from 11 sites in the Tertiary formations and the Yucheon Group. It is judged that both the Eoil and Waeup basins filled up with Tertiary deposits might be simultaneously formed in separate locations. The Janggi Group in the Eoil basin is divided into following stratigraphic units in ascending order: Gampo Conglomerte, Hongdeok Basalt, Nodongri Conglomerate and Yeondang Basalt, and the Bomkori Group in the Waeup basin: Waeupri Tuff; Andongri Conglomerate, Yongdongri Tuff and Hoamri Volcanic Breccia. Paleostress analysis by using striated faults reveals five sequential tectonic events: (1) NW-SE transtension (event I), (2) NW-SE transpression (event IIl), (3) NE-SW pure extension (event III), (4) N-S transpression (event IV) and (5) E-W pure compression (event V). Therefore, five sequential tectonic movements are closely associated with the formation and evolution of the Tertiary basins in the study area: tectonic event I of NW-SE extension is related to formation of the Tertiary basins during the late Oligocene to the Early Miocene, tectonic events II, III and IV caused the termination of the Tertiary basin opening and the crustal uplift in the study area, and tectonic event V upheaved the east coast or Korean Peninsula with compressive stress due to intense subduction of the Pacific plate into Asian continent since the Early Pliocene.