• Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
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• 2001.06a
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• pp.1529-1529
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• 2001

The watercore in apple is very important factor in storage and sorting of fruit. Most consumers tend to prefer the apple included watercore in immediately after harvest, however the watercore causes fruit flesh to brown during storage and lose the worth after all. But it is practically impossible to judge to the naked eye whether an apple has watercore or not. Therefore, the rapid, accurate and non-destructive analysis method for discrimination of watercore should be settled without delay. In this study we attempted the discrimination and quantitative analysis of watercore in apple fruit using near-infrared transmittance spectroscopy ‘Fuji’ apple fruits produced in Kyungpook of Korea was used in this experiment. The watercore content in apple was evaluated by graphic treatment of culled slice sections(10 mm). NIR transmittance spectra were collected over the 500 to 1000 nm spectral region with a spectrometer (Sentronic Co., Germany). The calibration models were carried out by partial least squares (PLS) analysis between NIR spectra data of apples and chemical data of watercore content. The spectra were different in absorbance between apple included watercore and not included one. Apple included watercore had higher absorption band than sample not included one at 732 and 820 nm. The calibration model seems to be accurate to predict the watercore content in apple fruit, the correlation coefficient (R) and root mean square error of prediction (RMSEP) were 0.99 and 0.93%, respectively. This result indicates that the PLSR calibration model by using NIR transmittance spectroscopy could be used for discrimination of watercore in apple fruit.

• Proceedings of the KIEE Conference
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• 2004.11c
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• pp.614-616
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• 2004

It is waste of time in industrial plant that the PI controller gain tuning. The PI controller has many trial-and-error steps for gain design. This paper proposes the optimum gain design of PI controller using a speed estimation in sensorless vector-control. In this method, a degree of stability and Hurwitz theory are applied and the controller gain is expressed by system parameters.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06a
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• pp.221-224
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• 2011

관계에 대한 다양한 자연어 표현을 다루는 것은 구조 정보에 대한 자연어 질의 인터페이스 연구의 중요한 문제 중에 하나이다. 이러한 문제를 해결하기 위한 기존의 연구들은 자연어 질의 인터페이스를 대상 분야에 적합하게 구축하기 위한 수작업에 의존하였다. 이러한 접근은 소규모 구조 정보에 대한 자연어 질의 인터페이스 구축 시 효율적으로 적용될 수 있다. 하지만 최근에는 RDF와 OWL과 같은 그래프 구조 정보가 다양한 분야에서 대량으로 생성되고 있다. 수작업에 의존하는 접근을 통해 이러한 대량의 그래프 구조 정보에 대한 자연어 인터페이스를 구축하기에는 어려움이 있다. 본 논문은 자연어 인터페이스에 대한 자연어 표현의 다양성 문제를 해결하기 위해 자동으로 관계에 대한 자연어 표현을 수집하는 방법을 제안한다. 그래프 구조 정보에서 관계는 두 객체를 연결하는 유일한 에지(edge)로 표현된다. 제안한 방법은 주어진 에지로 연결되는 서로 다른 객체 쌍을 말뭉치(corpus)에서 검색하고 검색된 객체 쌍 주변에서 빈번하게 등장하는 자연어 표현을 수집한다. 자동으로 수집한 자연어 질의 표현을 자연어 인터페이스에 적용한 결과 수작업에 의존하는 기존 연구들과 비교할 만한 실험 결과를 보였다.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1779-1780
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• 2008

This paper presents a switching system of speed controller between PI (Proportional_Integrator) and P_LPF (Proportional_Low pass filter) to improve overshoot and slow settling time in DC motor. When the integrator is saturated in the PI controller, the error signal is integrated continuously. For preventing the state, the Anti-windup scheme is proposed. But the Anti-windup scheme dose not show stable characteristics in the whole speed command section after tuned a gain. By using P_LPF switching system these problems are improved and there is no need to tune of user hereafter, when the integrator is saturated. The proposed method is verified by the simulation results using MATLAB SIMULINK.

• Journal of Fashion Business
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• v.15 no.5
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• pp.28-42
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• 2011

The purpose of this study was to classify cosmetics shopping propensity and analyze the relationship between cosmetics shopping propensity typology, cosmetics behavior, and purchasing behavior of female cosmetics consumers. Questionnaires were administered to 455 famale consumers living in Deagu and Kyungbook province. Data were analyzed by using frequency, factor analysis, cluster analysis, correlation analysis, $X^2$-test, ANOVA, and Duncan-test. The findings are as follows. Cosmetics shopping propensity typologies of female consumers were classified into four groups such as economic, band loyalty, passive, and impulse display shopping. In the relationship of the cosmetics shopping propensity was related to the sub-variables of cosmetics behavior. Cosmetics shopping propensity groups showed different all the sub-variables of cosmetics behavior factors. Cosmetics shopping propensity groups showed connected with the sub-variables of cosmetics purchasing behavior factors.

• Journal of agricultural medicine and community health
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• v.33 no.2
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• pp.243-254
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• 2008

Abstract - Objective: The purpose of this study was to examine smoking status and the relates factors in the rural elderly. Methods: This study was conducted with 2,421 elderly people(male 1,273 and female 1,148) residing in the selected 25 villages, and face-to-face interviews with the subjects were made from January 1 through March 30, 2002. Results: The average age of the male subjects was 72.7 and that of the female subjects 72.8. The investigation of smoking states showed that for male subjects, smokers accounted for 49.4%, nonsmokers 26.9%, and abstainers from smoking 23.7% and that for female subjects, smokers accounted for 18.3%, nonsmokers 75.4%, and abstainers from smoking 6.3%. The level of ?low ADL? was significantly higher in abstainers. In men, smoking rate had higher in alone, non-job, queerstreet, 「high ADL」. In women, smoking rate had higher in younger age, queerstreet, unhealthy, 「high ADL」. Conclusions: The smoking rate of the elderly was relatively high, especially at abstainers. The smoking status of elderly was correlated with age, family type, job, economic status by self-assessment, Self-recognition of health status, ADL level.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.20 no.9
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• pp.1014-1020
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• 2009

In this paper, a novel UWB(Ultra Wide-band) antenna with suppressed band of IEEE 802.11a($5.15{\sim}5.825\;GHz$) WLAN was designed and fabricated by using SRR(Split Ring Resonator) with band rejection property. MWS(Micro-wave Studio) of CST company was utilized in the design stage. The antenna was fabricated on a substrate, Rogers 4003, with the thickness of 0.8 mm and relative permittivity of 3.38. The measured result shows that the proposed antenna has a good return loss below -10 dB and group delay below 1nsec over UWB communication band($3.1{\sim}10.6\;GHz$) except WLAN band. It also shows the omni-directional radiation pattern.

• The Research Journal of the Costume Culture
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• v.20 no.4
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• pp.515-528
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• 2012

The purpose of this study was to classify appearance management attitudes into groups and analyze the difference of self-efficacy and body satisfaction by the groups. Questionnaires were administered to 255 college students living in Deagu Metropolitan City and Kyungbook province. The data collected were analyzed by using frequency, factor analysis, cluster analysis, correlation analysis, ANOVA, Duncan-test, t-test, and ${\chi}^2$-test. The findings were as follows. Appearance management attitudes of college students were classified into three groups such as group health body, low body interest group, emphasizes collective body. The appearance management attitudes showed significant correlation with the sub-variables of self-efficacy and body satisfaction. Male students showed no significant difference in self-efficacy by the groups while female students showed a significant one in task performance which was a sub-variable of self-efficacy. Both of the male and female students showed a significance of difference in the gap between actual and ideal weight which was a sub-variable of body satisfaction by the groups. Gender of college students showed distinction between the sub-variables of self-efficacy factors such as task performance, and anxiety and body satisfaction such as BMI, the difference between current height and ideal height, the difference between current weight and ideal weight.

• Korean Journal of Human Ecology
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• v.17 no.4
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• pp.759-769
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• 2008

The purpose of this study was to classify consumption value and analyze the relationship between consumption value typology and fashion product purchasing behavior of college students as consumers. Data were gathered by surveying college students living in Daegu and Kyungbook area using convenient sampling, and 513 questionnaires were used in the statistical analysis. Data were analyzed by frequency, factor analysis, cluster analysis, ANOVA, Duncan-test, Chi-square, and t-test. The findings are as follows. According to the consumption value typologies of college students were classified into three groups such as Social Value oriented, Functional Value oriented, and Differentiated Individuality oriented group. The Social Value oriented group and the Differentiated Individuality oriented group were more conscious of clothing pursuit propensities behavior such as brand, shopping place, and price than Functional Value oriented group. The Functional Value oriented group showed the lowest interest in brand name. Purchasing behavior of casual wear and bags fashion product had the significant effects on the shopping place, and price.

• Journal of the Korean Chemical Society
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• v.31 no.5
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• pp.395-399
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• 1987

The two dissociation constants of leucine were measured in the temperature range from 15 to 40$^{\circ}$C and pressure up to 2,500 bar by conductometric method. Both constants were increased as the temperature increased but pressure effect was not same as temperature effect. The first constants were increased as pressure increase but the second constants were decreased as pressure increase in the law temperature range but increased in some higher temperature range. These phenomena were discussed from the thermodynamic properties of the dissociation reactions.