• Journal of the Korean earth science society
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• v.21 no.5
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• pp.563-582
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• 2000

Two Cretaceous(80-90 Ma) non-marine sedimentary basins, Namyang and Tando Basins, are distributed in the Namyang area, Hwaseonggun and in the Tando area, Ansanshi, Kyungki Province, Korea. The Namyang and Tando Basins are composed of 10 facies, which are pooped into 5 facies associations(FA). FA I consists of massive conglomerate facies, normally graded conglomerate facies and reversely graded conglomerate facies, which is interpreted to have been formed by laminated sandstone facies, massive conglomerate facies(channelized), which is thought to have been formed by sheet flow, stream flow and suspension sedimentation in an alluvial/braided plain environment. FA III consists of massive mudstone(pebbly) facies, laminated mudstone facies, massive sandstone facies and is interbedded by channel-fill conglomerate. It is interpreted to have been deposited by suspension settling during flooding and channel-fill deposition in a floodplain environment. FA IV consists of massive conglomerate facies, normally graded conglomerate facies, massive sandstone facies, normally graded sandstone facies, and laminated sandstone facies and is interbedded with mudstone facies. It is thought to have been deposited by debris flow and turbidity current in a fan-delta environment. FA V consists of massive mudstone facies, laminated mudstone facies, laminated sandstone facies and is interbedded by massive conglomerate bed. It is thought to have been formed by suspension sedimentation and low-density turbidity current in a lake. In the Namyang Basin FA I is distributed in the eastern and southern margin of the basin, FA II in the middle part of the basin as north-south tending band. and FA III in the western part. In the Tando Basin FA II is distributed in the middle part of eastern margin and in the northwestern margin, FA IV in the southwestern part, and FA V in the central part. Correlation of the facies associations shows that FA I and II in the Namyang Basin are distributed in the lower to middle part of stratigraphic sequence and FA III in the upper part of the sequence whereas FA II and IV in the Tando Basin are in the lower to middle part and FA V in the upper part of the sequence. These patterns of facies associations distribution suggest that the Namyang Basin was developed as an alluvial fan and alluvial/braided plain at first and then evolved into a floodplain whereas the Tando Basin was developed as a fan-delta and alluvial/braided plain at first and then evolved into a lake environment.

• Proceedings of the Materials Research Society of Korea Conference
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• 1996.11a
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• pp.174-176
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• 1996

In the YBCO matrix, 10wt.% Y$_2$BaCuO$\_$5/ (211 phase) was added, the final 211 content of YBCO made by MTG process could reach about 20wt.% which was the optimum value for the critical current density. And also 10wt.% Ag was added in the matrix of YBCO, which was nearly about the saturate solubility of silver in textured YBCO. SmBaCuO crystal was grown by the melted-condensed process. A 5${\times}$5${\times}$2㎣ single crystal of SmBaCuO was used to be the seed in the preparation of YBCO. It was proved the orientation of YBCO was the same as the orientation of the SmBaCuO seed. The oxygen absorption of bulk oriented YBCO was studied and the heat treatment of oxygen absorption would be in flowing oxygen, at 400$^{\circ}C$ for about 24 hours. the magnetic hysteresis loops were measured by Vibrating Smaple Magnetometer and the J$\_$c/ was calcuated by means of Bean's model.

• Journal of the Korean Society of Costume
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• v.64 no.7
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• pp.68-81
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• 2014

This study was conducted to demonstrate the differences in people's beauty involvement, hair attitude and cognitive in accordance with their interest in celebrities and television. Also, the difference between cognitive age and real age was studied. Research subjects were females aged 20s to 50s living in Seoul and the surrounding metropolitan areas. The SPSS 19.0 was used for data analysis. The results were as follows: First, the involvement in TV entertainers' was categorized into "TV entertainer fashion fan group," "TV entertainer follower group," and "TV program interest group." Second, The involvement of beauty was divided into skin management and expression, body management, makeup and hair attitude. The factors for hair attitude come from the following four actors: "hair creator fan group", "hair homeostasis-oriented," "hair differentiation factor," and "hair personnel-oriented group." Third, the analysis for the differences in the involvement of beauty based on the people's interest in TV appearances of entertainers was that there was a significant difference in skin care and expression, body management, makeup and hair attitude. The interest groups for the entertainers' TV appearances showed the highest in all of the above categories. Fourth, The analysis for the cognitive age for the "TV entertainer interest group" showed little difference in cognitive age, age of sensibility, age of physical appearance, behavior age, and age of interest. Fifth, The result for the difference in the actual age and cognitive age for different age groups showed that there was a little difference in average cognitive age including the age of sensibility, age of physical appearance, behavior age, and age of interest.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.1
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• pp.69-80
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• 2009

Purpose: We investigated validity of a monitor-based computer eye test program, Test Chart 2000 Pro (developed by Thomson Software Solutions, UK). Methods: We chose ten common eye tests of the Test Chart 2000 Pro and Korean Standard Eye Test, applying them to same subject groups each by each, followed by comparison and analyses of agreement degree of the results. Results: Among the ten eye tests, Snellen Chart, Cross-cyl target, Duochrome test, Fan and Block test, and Random dot stereograms showed statistically significant agreement between both the Korean standard eye test method and Test Chart 2000 Pro. On the other hand, some disagreements were found between the two eye test methods in LogMAR Chart, Single Letter Chart, Phoria Test, Fixation Disparity Test, and Worth 4 Dot Test. Conclusions: Comparing to the Korean Standard Eye Test that consists of Han eye chart and Phoroptor, validity of the Test Chart 2000 Pro is not so high. Further improvements of the Test Chart 2000 Pro in accuracy are required.

• Bulletin of the Korean Chemical Society
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• v.35 no.6
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• pp.1841-1844
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• 2014

• The Transactions of The Korean Institute of Electrical Engineers
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• v.65 no.1
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• pp.219-226
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• 2016

In this paper, adaptive home power peak-cut control system is developed using PLC. The developed scheme provides monitoring of power usage, power peak-cut control and additional function. In test bed, zone is presented by bedroom, living room, kitchen and bathroom. And individual load is presented by lighting, heater and fan in zone. In developed scheme, zone control is implemented by single PLC modem. And individual load control is implemented by key-map table. In addition, power peak-cut control system S/W, which can perform setting of power peak, power peak-cut control and monitoring of power usage.

• Journal of ILASS-Korea
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• v.11 no.2
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• pp.105-112
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• 2006

A unique feature of fluidic atomizers is that the nozzle geometry produces a thin capillary Jet which is forced to oscillate on a 2-dimensional plane through the use of a passive feedback mechanism. The objective of the current work is to characterize the influence of the stagnation pressure at the nozzle exit, jet oscillation and stretching on the breakup properties of the capillary ligament. To achieve this, shadow graph technique is used to measure size, shape, velocity and the number density of the droplets as a function of the position within the spray fan. The breakup length, defined as the radial distance from the breakup point, is analyzed as a function of the non-dimensional parameters. Finally, a kinematic model is developed to simulate the breakup of the oscillating jets at low stagnation pressures. Using the existing jet breakup theories, the model is used to predict the size and diameter distribution of the droplets after primary atomization.

• Journal of Industrial Technology
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• v.34
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• pp.15-20
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• 2014

Recently, PMSMs(Permanent Magnet Synchronous Motors) have become increasingly popular in various high-performance motor drive applications. However, the high-performance drive of PMSMs needs a position sensor such as a resolver, which increases not only the price of the system but also reduces the system reliability. This paper is on the implementation of sensorless control of a SPMSM, which drives a fan for cooling in appliances. In this paper, the rotor position for high-performance drive of a SPMSM is derived from back electromotive force (EMF) information proportional to the rotor speed. Also, the initial rotor position information for start-up is estimated from a saturation phenomenon of inductance. The validity of the proposed sensorless drives was confirmed by the experiment on the SPMSM drive systems for cooling fans of refrigerators and laptop computers.

• International Journal of Contents
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• v.5 no.1
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• pp.9-14
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• 2009

The purpose of this study is to investigate the impacts of e-service quality factors on customer satisfaction and behavior intention by Web site types. Difference and moderating effect resulting from the type of web site users about an association with reaction of satisfaction and those component concepts are also one of the aims in the study. As a result, the study found that factors of web site service quality variables had positive impacts on customer satisfaction. And customer satisfaction also had a positive impact on relationship intention and word of mouth intention. Furthermore, through the comparative analysis, we found that the service quality differed on the effects of customer satisfaction by web site types. According to those results, marketing managers should develop different service strategies based on different web site types.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.820-823
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• 2017

본 연구의 목적은 얼굴 인식을 통해 사용자 위주로 작동하는 인공지능 선풍기를 개발하기 위한 것이다. 일반적인 선풍기는 사용자가 직접 풍향을 조절해야 하며, 조절한다 하더라도 사람이 위치하지 않은 곳까지 바람을 보내주거나, 사람이 없는 상황에서도 동작하는 비효율적인 방식이다. 따라서 본 논문에서는 OpenCV 오픈 소스 라이브러리를 중심으로 얼굴 인식 기능을 탑재한 선풍기로 PWM을 이용한 선풍기의 회전과 안드로이드 앱의 블루투스 모듈을 이용하여 원격조정이 가능하도록 하였다. 기존의 사용자가 직접 선풍기의 풍향을 설정해야 하는 것이 얼굴 인식이라는 시스템을 통해 자동으로 풍향이 조절되는 방식이다. 그 결과, 선풍기를 직접 설정할 수 없는 상황에 놓인 사람들에게 큰 도움이 됨과 동시에 불필요한 전력 낭비가 줄어드는 친환경 선풍기를 개발하였다.