• 한국광학회:학술대회논문집
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• 한국광학회 1997년도 Advance Program of 14th optics andquantum Electronics conference, 1997제14 회 광학 및 양자전자 학술 발표회 논문 요약집
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• pp.90-90
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• 1997

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.230.2-230
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• 1999

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• Agricultural and Biosystems Engineering
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• 제3권1호
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• pp.18-28
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• 2002

Neural network based models were developed and evaluated for predicting corn yield from aerial images based on 1998 and 1994 image data. The model used images in multi-spectral bands such as R, G, B, and IR (Red, Green, Blue and Infrared). The inputs to the neural network consisted of mean and standard deviation of multispectral bands of the aerial images. Performances of several neural network architectures using back-propagation with momentum were compared. The maximum yield prediction accuracy obtained was 97.81%. The BPNN model prediction accuracy could be enhanced by using more number of observations to the model, other data transformation techniques, or by performing optical calibration of the aerial image.

• 유통과학연구
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• 제12권7호
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• pp.37-44
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• 2014

Purpose - This study reviews changes in the automobile export-import structure between Japan and USA through a trade related index, and focuses on analyzing comparative advantage based on time-series analysis of statistical data (2000, 2005, and 2012) by using the trade intensity index (TII), revealed comparative advantage index (RCA), and trade specialization index (TSI). Research design, data, and methodology - Japan and USA have mutually complementary economic phase characteristics. Therefore, this study aimed to understand each country's trade structure, to strengthen Japan-USA economic cooperation and aimed to examine trade drawbacks to analyze causes affecting trade and ways to improve it to facilitate its expansion. Results - These two economies have immense complementary potential and, further, significantly greater profits are assured from trade between them, as compared to any other integrated regional economic community. Conclusion - Economic cooperation between these two powers can provide opportunities for industry technology cooperation through partnerships against the backdrop of accelerating competition among industries, by identifying opportunities to secure stable resource suppliers and enlarge the export market.

• 농촌지도와개발
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• 제16권4호
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• pp.743-773
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• 2009

The objectives of this study were to study multicultural society of rural areas in Korea. USA immigration law permits permanent settlement but Korea immigration law prohibits permanent settlement. USA adopted the territorial principle but Korea adopted the personal(nationality) principle. So a large number of people immigrated and settled in USA and mass(collective) immigrants is usual in USA. But foreign workers(temporary immigration) and international marriage women(individual immigrants) is usual in Korea. According to the positive law, foreign workers cannot settle down in Korea. So international marriage women immigrants are main cause of multicultural society in rural areas in Korea. This is the particularity of multicultural society in rural areas in Korea. So it is necessary to differentiate multicultural society policy according to areas and residents. Many peoples see multicultural society from a point of view of human rights and welfare. But it is also necessary to see multicultural society from a point of view of economic and policy.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제19권4호
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• pp.805-822
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• 2005

In Korea, many local university mathematics faculty knew that the institution faced serious student shortage problems and the restructuring and cut actions for such a mathematics major programs. In general, undergraduate mathematics education in korea is in the crisis. In general, lots of mathematics departments in korea was not prepared for such a severe risk. In this article, university mathematics education and research business are studied in the context of the size of korea-usa population, economy(such as GDP), SCI indices. Korea-usa university mathematics education profile data are presented to compare korea-usa university mathematics education business. Lots of precious data on mathematics education are being helped to prepare for the university mathematics education crisis.

• 대한치과보철학회지
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• 제31권4호
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• pp.515-522
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• 1993

The purpose of this study was to evaluate the bond strength of rebase resin to denture base resin. The denture base resins in this study were Premium Super-20(Lang Dental Mfg. Co. Inc., Wheeling, USA) and Lucitone 199(Dentsply International Inc., York, USA). And the rebase resins were Repair Acrylic(Lang Dental Mfg. Co. Inc., Wheeling USA). Toughron Rebase(Miki Chemical Product Co. Ltd., Japan) , Tokuso Rebase(Tokuyama Soda. Co. Ltd., Japan) and Triad VLC Reline Material(Dentsply International Inc., York, USA). The obtained results were as follows : 1. The bond strength of Repair Acrylic to Premium Super-20, and that of Toughron Rebase to Lucitone 199 were the highest. 2. In Premium Super-20 and Lucitone 199, bond strength of all rebase resins had significant differences. 3. The bond strength of Triad VLC Reline Material was inclined to the lowset.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1998년도 Proceedings ICPE 98 1998 International Conference on Power Electronics
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• pp.56-61
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• 1998

A soft-switching three-level chopper-inverter system was built for high-power applications like Power Conditioning System (PCS) for Superconductive Magnetic Energy Storage (SMES). The system can handle 1800-VDC, 200-A peak, and 250-kW output power. The system was designed to operate with 20-KHz PWM operation with the aid of state-of-the-art zero-current transition type soft-switching. The system is based on the Power Electronics Building Block (PEBB) concept.

• Agricultural and Biosystems Engineering
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• 제1권2호
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• pp.88-94
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• 2000

Nitrogen (N) management is critical for corn production. On the other hand, N leaching into the groundwater creates serious environmental problems. There is a demand for sensors that can assess the plant N deficiency throughout the growing season to allow producers to reach their production goals, while maintaining environmental quality. This paper reports on the performance of a vision-based reflectance sensor for real-time assessment of N stress level of corn crops. Data were collected representing the changes in crop reflectance in various spectral ranges over several stages of development in the growing season. The performance of this non-contact sensor was validated under various field conditions with reference measurement from a Minolta SPAD meter and stepped nitrogen treatments.

• 한국컴퓨터정보학회논문지
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• 제8권1호
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• pp.129-139
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• 2003

미국에서의 벤처기업의 확산과 성장은 1980년대 불경기의 미국을 지난 1990년대의 10년간 사상 최대의 호황경제로 만들었다. 미국 벤처기업의 성공은 대학과 벤처기업간의 산학협력은 물론 대학의 질높은 벤처창업 교육에 있었다. 미국의 벤처창업교육은 한국에 비하여 상당히 오래되었고 거의 모든 대학에서 장기적이면서도 적극적으로 실시하고 있다. 이에 반해 한국은 그 역사가 일천하고 아직도 피상적인 수준이다 이에 본 연구는 미국과 문화적 역사적 다른 한국에서 성공적인 벤처창업교육을 위한 5가지 기본적인 전략을 제시하였다.