• Bulletin of the Korean Chemical Society
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• v.20 no.11
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• pp.1365-1367
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• 1999

• Bulletin of the Korean Chemical Society
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• v.20 no.11
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• pp.1368-1370
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• 1999

• Bulletin of the Korean Chemical Society
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• v.18 no.3
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• pp.344-347
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• 1997

• Proceedings of the PSK Conference
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• 2001.10a
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• pp.298.2-298.2
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• 2001

• The Transactions of the Korean Institute of Power Electronics
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• v.5 no.4
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• pp.318-326
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• 2000

This paper analyses with the dynamic performance of HVDC System connected to a weak AC system for varying exciter characteristics of synchronous machines connected at the converter bus. Conventionally capacitors are used to supply reactive power requirement at a strong converter bus. However the installation and synchronous machine is essential in a isolated weak network to re-start after a shutdown of HVDC and to increase strength. The dynamic performance of a synchronous machine depends on the characteristics depends on its exciter characteristics. In this paper, several excites types are used to investigate their effect on the dynamic performance of the HVDC system and modifications to standard exciter topogical are suggested to mitigate observed problems.

• The Korean Journal of Zoology
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• v.27 no.4
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• pp.213-220
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• 1984

The frequencies of finger print patterns and the pattern intensity index among 2, 925 Koreans (804 males, 2, 121 females) are analyzed. Total finger ridge counts was calculated for 776 Koreans (426 males and 350 females). Comparisons are made with results among other racial populations in a review of the literature. Certain differences exist between males and females in both qualitative (finger print pattern) and quantitative (total ridge count) dermatoglyphic traits. Males have higher frequences of whorls (53.6% for males, 45.7% for females), and radial loops (2.9% for males, 2.2% for females), while the frequencies of archs (1.9% for males, 2.9% for females) and ulnar loops (41.6% for males, 49.2% for females) are higher in females. The pattern intensity index for males (15.2) was higher than that for females (14.3). The mean of the total ridge count was higher (140.4$\\pm$41.2) in males than in females (129.8$\\pm$40.6). There was no correlation between total ridge count and IQ (r=-0.0027, N=343). Total ridge count among different racial groups was found to vary slightly.

• The Journal of the Convergence on Culture Technology
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• v.10 no.2
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• pp.453-458
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• 2024

Optical Character Recognition is the technology that recognizes text in images and converts them into digital format. Deep learning-based OCR is being used in many industries with large quantities of recorded data due to its high recognition performance. To improve medical services, deep learning-based OCR was actively introduced by the medical industry. In this paper, we discussed trends in OCR engines and medical OCR and provided a roadmap for development of medical OCR. By using natural language processing on detected text data, current medical OCR has improved its recognition performance. However, there are limits to the recognition performance, especially for non-standard handwriting and modified text. To develop advanced medical OCR, databaseization of medical data, image pre-processing, and natural language processing are necessary.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.515-518
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• 2020

영상 콘텐츠 생산 간편화와 방송 채널 운영의 편리화에 따른 '영상의 시대'가 도래함에 따라 여러 제품에 대한 리뷰 영상이 관심을 받고 있다. 본 연구에서는 리뷰 영상의 언어와 비언어적 감성 분석을 토대로 통합 신뢰도 분석 시스템을 제안한다. 이를 위해, 영상 속 음성의 언어 감성 분석과 리뷰어의 표정 분석을 통해 얻은 각 감성값을 추출하고 정량화한다. 이후 표준화된 언어, 비언어적 감성 값에 대한 통합 신뢰도 분석을 진행한다. 결과적으로, 리뷰 영상에 대한 신뢰도를 객관화된 지표로써 평가할 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.310-313
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• 2020

디지털 시대에서 스마트폰은 없어서는 안 될 존재가 되었다. 스마트폰이 단순한 통신 기능 뿐만 아니라 다양한 서비스업의 기능까지 수행하면서, 빠르게 발전하였다. 이러한 빠른 발전 속도를 따라가지 못한 노년층은 스마트폰의 사용에 어려움을 겪고 있다. 본 연구는 노년층이 디지털 시대에서 소외되지 않고, 스마트폰을 쉽게 사용할 수 있도록 돕는 애플리케이션을 제안한다. 애플리케이션은 전화 및 메시지 기능의 사용 방법을 안내하고, 위급 상황을 빠르게 알리며 보이스피싱의 위험으로부터 보호하는 기능을 가지고 있다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.8
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• pp.998-1008
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• 2008

This study aimed to assess the nutritional status and the nutritional risks based on the food intake frequency and health-related behaviors of middle-aged and elderly people living in Andong area. Interviews were conducted with 1,384 subjects (532 males, 852 females) aged 50 years and over. Nutrient intakes, food intake frequency, and health-related behaviors including smoking, drinking, and exercise were investigated. The average energy intakes were 1410.5 kcal for males and 1279.2 kcal for females, and the percentages of the subjects consuming below the estimated energy requirement (EER) were 92.5% and 88.4%, respectively. The least consumed nutrients compared to the estimated average requirement (EAR) were riboflavin (92.5% for males, 89.6% for females), folic acid (89.7%, 88.5%), and calcium (78.9%, 85.8%), in order. According to the food intake frequency survey, the intakes of meat, fish and vegetable (except kimchi) were very poor, and this low intakes of meat and fish showed as poor status of protein, niacin, vitamin $B_6$, and zinc intakes. Health-related behaviors data showed that the ratio of cigarette smokers, especially male, was higher, while the ratio of the person exercising regularly was lower than that of the nationwide statistics, respectively. Cigarette smoking and drinking were not significantly related to the poor nutrition intake, while regular exercise positively influenced nutrient intakes in female subjects. These results showed that the nutritional status of the subjects was likely to be severely deficient and the low intakes of meat and fish to be highly related to the increase of nutritional risk. Therefore, in order to prevent the occurrence of the secondary disease related to the food intake and health-related behaviors of the subjects, the proper educational program on balanced dietary intake and the correction of health-related behaviors should be developed and applied to this area.